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WO2011071044A1 - Dispositif de présentation d'informations utilisant un stimulus tactile au moyen d'un vibrateur - Google Patents

Dispositif de présentation d'informations utilisant un stimulus tactile au moyen d'un vibrateur Download PDF

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Publication number
WO2011071044A1
WO2011071044A1 PCT/JP2010/071914 JP2010071914W WO2011071044A1 WO 2011071044 A1 WO2011071044 A1 WO 2011071044A1 JP 2010071914 W JP2010071914 W JP 2010071914W WO 2011071044 A1 WO2011071044 A1 WO 2011071044A1
Authority
WO
WIPO (PCT)
Prior art keywords
vibration
vibrators
driver
information presentation
vibrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/071914
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English (en)
Japanese (ja)
Inventor
一仁 村田
秀男 三橋
真 則枝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP2011545213A priority Critical patent/JP5678894B2/ja
Priority to US13/514,159 priority patent/US9278705B2/en
Publication of WO2011071044A1 publication Critical patent/WO2011071044A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/04—Hand wheels
    • B62D1/046—Adaptations on rotatable parts of the steering wheel for accommodation of switches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3664—Details of the user input interface, e.g. buttons, knobs or sliders, including those provided on a touch screen; remote controllers; input using gestures

Definitions

  • the present invention relates to an information presentation apparatus using tactile stimulation by a vibrator.
  • This application claims priority based on Japanese Patent Application No. 2009-278925 (application date: December 8, 2009) and Japanese Patent Application No. 2010-147629 (application date: June 29, 2010) filed in Japan And the contents thereof are incorporated herein.
  • Patent Document 1 discloses an information presentation apparatus including a plurality of vibrators provided on a vehicle seat and a detector that detects a moving direction of a moving body existing around the vehicle. This information presentation apparatus operates at least two vibrators corresponding to the moving direction of the moving body detected by the detector in a plurality of vibrators in an order corresponding to the moving direction to operate information on the moving body. Present to the person.
  • Patent Document 2 discloses an information presentation apparatus including a plurality of vibrators provided on a vehicle seat and a detector that detects a dangerous state of the vehicle.
  • This information presentation apparatus selects two or more vibrators from among a plurality of vibrators according to the dangerous state of the vehicle detected by the detector, and at least one of vibration frequency, time, amplitude, and vibration interval.
  • the danger detected by the detector is adjusted by adjusting the vibration frequency, time, amplitude, and vibration interval according to the tactile sensation characteristics of the human body so that the apparent movement phenomenon is perceived by the vehicle operator.
  • a pattern representing the state is presented to the operator as warning information.
  • the thighs and back of the human body are areas where the distribution of sensory receptor cells is relatively sparse, and tactile stimulation compared to palms and fingertips, where the distribution of sensory receptor cells responding to tactile stimulation is relatively dense
  • the sensitivity to is relatively low.
  • the present invention has been made in view of the above-described circumstances, and an object thereof is to provide an information presentation apparatus capable of accurately transmitting information to an operator even if the stimulus intensity transmitted to the operator of the vehicle is weak. That is.
  • An information presentation apparatus presents information provided from the outside to an operator as vibration, and includes a manual operation unit (for example, a steering wheel) having a shape gripped by an operator's hand, At least one vibrator attached to the operation unit, a control unit that generates a drive signal based on information provided from the outside to control the vibrator, and vibration of the vibrator applied to the manual operation unit And a vibration transmission unit that transmits the signal as a tactile stimulus to the operator's hand.
  • a manual operation unit for example, a steering wheel having a shape gripped by an operator's hand
  • At least one vibrator attached to the operation unit
  • a control unit that generates a drive signal based on information provided from the outside to control the vibrator, and vibration of the vibrator applied to the manual operation unit
  • a vibration transmission unit that transmits the signal as a tactile stimulus to the operator's hand.
  • a plurality of vibrators may be provided in the manual operation unit, and the control unit may sequentially drive the vibration start timings of the plurality of vibrators with a time difference.
  • the control unit controls the vibrator by generating a drive signal based on the vibration transfer function between the vibrator and the vibration transmission unit in the manual operation unit.
  • the control unit may generate, as a drive signal, a control waveform that has been frequency-modulated so as to sweep the frequency over time.
  • the control unit may generate, as a drive signal, a control waveform obtained by superimposing a plurality of frequency components and changing the mixing ratio according to time.
  • the control unit may control the plurality of vibrators with different vibration strengths.
  • the control unit may generate a control waveform having a time phase difference and amplitude-modulated as a drive signal.
  • the control unit may generate a control waveform having a time phase difference and an amplitude difference at discrete time intervals as a drive signal.
  • information provided from the outside can be converted into vibration by a vibrator and transmitted as a tactile stimulus to an operator's hand holding the vibration transmitting unit.
  • Information can be presented accurately even if the tactile stimulus transmitted to the operator is weak. For this reason, the energy amount which an information presentation apparatus consumes can be reduced.
  • FIG. 1 is a block diagram illustrating a configuration of an information presentation device according to a first embodiment, and corresponds to Usage Example 1 and Usage Example 2.
  • FIG. 1 is a block diagram illustrating a configuration of an information presentation device according to Embodiment 1, and corresponds to Usage Example 3.
  • FIG. 10 is a block diagram illustrating a configuration of an information presentation device according to a second embodiment and corresponds to a first usage example. It is a block diagram explaining operation
  • FIG. 10 is a block diagram illustrating a configuration of an information presentation apparatus according to a second embodiment and corresponds to a second usage example. It is a block diagram of the information presentation apparatus which concerns on Example 3 of this invention.
  • FIG. 10 is a block diagram illustrating a configuration of an information presentation apparatus according to a third embodiment, which corresponds to Usage Example 1 and Usage Example 2.
  • FIG. 10 is a block diagram illustrating a configuration of an information presentation device according to a third embodiment, which corresponds to a usage example 3 and a usage example 4; It is a graph which shows the control waveform which drives the vibrator
  • FIG. 1 is a structural diagram of an information presentation apparatus 10 according to Embodiment 1 of the present invention.
  • FIG. 2 is a block diagram illustrating a configuration of the information presentation device 10.
  • the information presentation apparatus 10 includes a steering wheel 11, seven vibrators 12 (that is, vibrators 12a to 12g), switches 13a and 13b, and a control unit 14. As shown in FIG. 2, the information presentation device 10 is connected to an information generator 15 built in the car navigation system N.
  • the steering wheel 11 is provided in a driver's seat of a vehicle such as an automobile and is operated by an operator to steer the vehicle.
  • the outer shape of the steering wheel 11 is annular (or elliptical), and the annular portion is fixed by a steering center portion 11a at the center.
  • the steering center portion 11a is fixed to a rotating shaft member O provided with a steering device for operating the vehicle.
  • a material of the steering wheel 11 for example, a resin material, metal, wood, or carbon material can be employed.
  • the steering wheel 11 may be formed by appropriately combining a plurality of materials. It is preferable that the steering wheel 11 has a specific vibration transfer function corresponding to the material of the steering wheel 11 determined by measurement or simulation, and the transmission characteristics of vibration propagating through the steering wheel 11 can be known in advance.
  • the steering wheel 11 is provided with gripping portions A1 and A2 that are gripped by an operator.
  • the gripping portions A1 and A2 are viewed from the operator facing the steering wheel 11 when the steering wheel 11 is in a neutral state (that is, the steering shaft 11 is not steered in any direction around the rotating shaft member O). It is preferable to be located at both ends in the left-right direction. Further, the shape of the gripping portions A1 and A2 is set along the circumferential direction of the steering wheel 11 by a predetermined length L (for example, an average value of the maximum width of an adult's hand) with reference to the maximum width of the operator's hand. It is preferable that it is extended.
  • L for example, an average value of the maximum width of an adult's hand
  • the gripping portions A1 and A2 of the steering wheel 11 are provided with vibration transmitting portions B1 and B2 that transmit vibrations from the vibrators 12a to 12g to the operator when the operator grips the gripping portions A1 and A2.
  • the vibration transmission parts B ⁇ b> 1 and B ⁇ b> 2 are integrally formed with the steering wheel 11 by the same material as that constituting the steering wheel 11.
  • the vibration transmitting portions B1 and B2 may constitute a part of the steering wheel 11 or may be formed of a material different from the material of the steering wheel 11.
  • the vibrators 12a to 12g are provided in one arcuate portion sandwiched between the gripping portions A1 and A2 in the annular portion of the steering wheel 11, and in the order of the vibrators 12a, 12b, 12c, 12d, 12e, 12f, and 12g. Installed at intervals.
  • the vibrators 12a to 12g are located in the arcuate portion on the upper side of the steering wheel 11.
  • the vibrators 12a to 12g are embedded in the arcuate portion on the upper side of the steering wheel 11.
  • the shape of the vibrators 12a to 12g can be set to an appropriate shape as long as it can be embedded in the steering wheel 11 without protruding from the outer surface.
  • the vibrators 12a to 12g are connected to a signal line W1 embedded in the steering wheel 11.
  • the signal line W1 is connected to the control unit 14, and a drive signal is transmitted from the control unit 14 to the vibrators 12a to 12g via the signal line W1.
  • Each of the vibrators 12a to 12g vibrates upon receiving a drive signal transmitted from the control unit 14, and specifically employs a vibration motor that is rotationally driven by applying a DC voltage. be able to. Since the vibrators 12a to 12g are embedded in the steering wheel 11, when the vibrators 12a to 12g vibrate, the vibrations are transmitted to the steering wheel 11, and the vibrations propagate to the vibration transmission portions B1 and B2 of the steering wheel 11. It has become.
  • the switches 13a and 13b are input units for a vehicle operator (for example, a driver) to operate predetermined devices, and for example, momentary switches can be employed.
  • the switches 13a and 13b are located at the grip portions A1 and A2 of the steering wheel 11, and are disposed to face each other with the rotation shaft member O interposed therebetween.
  • the switches 13a and 13b may be provided within a range where the operator's finger can reach in a state where the driver grips the grip portions A1 and A2 of the steering wheel 11. For this reason, the switches 13a and 13b may be disposed close to the gripping portions A1 and A2.
  • the switches 13a and 13b protrude from the inner peripheral side of the outer surface of the steering wheel 11 and are fixed. As a result, the driver can easily grasp the positions of the switches 13a and 13b by groping.
  • the protruding direction of the switches 13a and 13b is the inner side direction of the annular portion of the steering wheel 11. For this reason, the operator can easily depress the switches 13a and 13b while gripping the grip portions A1 and A2 of the steering wheel 11.
  • the switches 13a and 13b cannot be easily removed from the steering wheel 11, such as screwing or integral formation. Further, as a method of fixing the switches 13a and 13b to the steering wheel 11, for example, the switches 13a and 13b may be detachably fixed with a hook-and-loop fastener or the like.
  • the switches 13a and 13b are connected to a signal line W2 embedded in the steering wheel 11.
  • the signal line W2 is connected to the control unit 14, and an input signal is transmitted from the switches 13a and 13b to the control unit 14 through the signal line W2.
  • the control unit 14 receives the information transmitted from the information generating unit 15, generates a drive signal for vibrating the transducers 12a to 12g, and transmits the drive signal to the transducers 12a to 12g.
  • the control unit 14 is connected to the information generating unit 15 and is also connected to the transducers 12a to 12g. Note that the information generation unit 15 may perform wireless communication with the control unit 14.
  • the control unit 14 applies a DC voltage (or a drive signal) for rotationally driving the vibration motors constituting the vibrators 12a to 12g to the vibrators 12a to 12g via the signal line W1.
  • the control unit 14 generates a drive signal so that the driver can recognize the vibration intensity and the vibration time through the hands and fingers swung to the vibration transmission units B1 and B2 of the steering wheel 11.
  • the drive signal generated by the control unit 14 is set to have a time width so that the vibrators 12a to 12g are individually vibrated for a certain period of time or are successively vibrated in order.
  • the information generating unit 15 monitors and detects the operating state of the devices mounted on the vehicle, and information that needs to be presented to the driver among the operating states of the devices detected by the detecting unit 15a. Is transmitted to the control unit 14.
  • Usage example 1 A usage example 1 of the information presentation apparatus 10 according to the first embodiment will be described with reference to FIGS. 1 and 2.
  • the information presentation device 10 is mounted on a vehicle in conjunction with a car navigation system N that guides the vehicle to a destination.
  • vibration transmitting portions B1 and B2 are provided at the positions of the gripping portions A1 and A2 of the steering wheel 11, when the driver grips the gripping portions A1 and A2, the operator's hand is placed on the vibration transmitting portions B1 and B2. Will also come into contact.
  • the control unit 14 selects a vibrator to be driven from the vibrators 12a to 12g according to information presented to the driver, and transmits a drive signal to the selected single vibrator 12. For example, when the left direction is presented to the operator as the traveling direction of the vehicle, the control unit 14 selects the left vibrator 12a close to the left gripping part A1, and depends on the applied voltage and vibration time for driving the vibration motor. A drive signal having a certain application time is transmitted to the vibrator 12a. That is, a relatively strong tactile stimulus is transmitted to the driver's left hand, while a relatively weak tactile stimulus is transmitted to the driver's right hand. Thereby, the driver is presented with information that the direction in which the vehicle should travel is the left direction.
  • visual information such as a map displayed on the display of the car navigation system N and auditory information such as a voice guide are not only presented to the driver, but also touched through the driver's hand holding the steering wheel 11.
  • Information indicating the traveling direction of the vehicle is presented as a stimulus.
  • the car navigation system N presents the traveling direction of the vehicle to the driver by sequentially driving the vibrators 12a to 12g with a difference in the vibration start times of the vibrators 12a to 12g.
  • the control unit 14 receives data indicating the traveling direction of the vehicle from the car navigation system N, and drives the vibrators 12a, 12b, 12c, 12d, 12e, 12f, and 12g in order so that the vibration start time is delayed in order. Is transmitted to the transducers 12a to 12g.
  • the vibration source in the driver's hand holding the gripping portions A1 and A2 of the steering wheel 11, the vibration source is moving in the right direction as viewed from the driver from the gripping portion A1 toward the gripping portion A2.
  • Such tactile stimuli are transmitted from the vibration transmitting units B1 and B2.
  • the information that the traveling direction of the vehicle is the right direction can be presented to the driver by tactile stimulation.
  • the control unit 14 transmits a drive signal so that the vibration start time is delayed in the order of the vibrators 12g, 12f, 12e, 12d, 12c, 12b, and 12a, thereby holding the gripping part A1 of the steering wheel 11.
  • the tactile stimulus that the vibration source is moving in the left direction when viewed from the driver from the gripping part A1 to the gripping part A2 is applied to the hand of the driver holding A2 by the vibration transmitting parts B1 and B2. Communicated. Thereby, the information that the traveling direction of the vehicle is the left direction can be presented to the driver by tactile stimulation.
  • FIG. 3 is a block diagram illustrating a configuration in usage example 3 of the information presentation apparatus 10.
  • usage example 3 presents information to the driver from a device other than car navigation system N.
  • the opening / closing position when the window W on the driver's seat side of the vehicle is opened / closed using the switches 13a and 13b is presented to the driver.
  • the switch 13a is assigned as a closing switch for closing the window W
  • the switch 13b is assigned as an opening switch for opening the window W. That is, the window W of the power window device PW is opened and closed by the switches 13a and 13b.
  • the window W When the driver depresses the switch 13a, the window W is closed. Conversely, when the driver depresses the switch 13b, the window W opens. When the driver removes his / her finger from the switches 13a and 13b, the window W stops when the finger is released.
  • the detection unit 15 a detects the opening / closing position of the window W, and the transmission unit 15 b transmits data indicating the opening / closing position of the window W to the control unit 14.
  • the opening / closing position of the window W is digitized, and the opening is set to increase in the order of “0” to “6”. That is, “0” is set for the fully closed state of the window W, and “6” is set for the fully open state of the window W.
  • the data indicating the opening / closing position of the window W one value is selected and set from seven values “0” to “6”.
  • the control unit 14 receives the data transmitted from the information generating unit 15, selects any one of the seven transducers 12a to 12g, and transmits a drive signal to the selected transducer 12.
  • the transducers 12a, 12b, 12c, 12d, 12e, 12f, and 12g are sequentially associated with the data values 0, 1, 2, 3, 4, 5, and 6 transmitted from the information generation unit 15. It has been.
  • the window W When the vibrator 12a vibrates, the window W is completely closed, and when the vibrator 12g vibrates, the window W is completely opened.
  • the window W When the vibrator 12d vibrates, the window W is half closed (or half open). Further, when the vibrator 12b or the vibrator 12c vibrates, the window W is closed more than half, but a state where the window W is not completely closed is shown. Further, when the vibrator 12e or the vibrator 12f vibrates, the window W is opened more than half, but a state where the window W is not completely opened is shown.
  • the control unit 14 when the window W is half open (or half closed), “3” is selected from the data values 0 to 6 and transmitted from the information generating unit 15 to the control unit 14. .
  • the control unit 14 generates a drive signal for vibrating the vibrator 12d according to the received data value “3” and transmits the drive signal to the vibrator 12d.
  • the vibrator 12d vibrates, and the vibration propagates through the steering wheel 11 and is transmitted to the vibration transmission parts B1 and B2, and is transmitted from the vibration transmission parts B1 and B2 to the driver's hand.
  • the driver can perceive that the vicinity of the center of the arc portion on the upper side of the steering wheel 11 is vibrating due to the vibrations transmitted from the vibration transmitting portions B1 and B2. As a result, the driver can detect by touching that the window W is half open.
  • the vibrators 12a to 12g and the switches 13a and 13b are both provided on the steering wheel 11, the driver does not need to release his / her hand from the steering wheel 11 during the driving operation of the vehicle. Note that vibrations when the vehicle travels and vibrations of the engine are also transmitted to the steering wheel 11 at the same time.
  • the information generating unit 15 transmits the data values to the control unit 14 in the order of 4, 5, and 6, and the control unit 14 Transmits a drive signal to vibrate in the order of the vibrators 12e, 12f, and 12g according to the received data value.
  • time widths are set so as to vibrate the vibrators 12e, 12f, and 12g, so that the vibration position depends on the opening / closing position of the window W. It changes in the order.
  • the driver perceives the apparent motion phenomenon that the vibration source is moving from the center of the upper circular arc portion of the steering wheel 11 toward the grip portion A2.
  • information indicating that the window W is operating in the opening direction is transmitted to the driver's hand by tactile stimulation via the vibration transmission units B1 and B2 of the information presentation device 10.
  • the vibrators sequentially vibrate in the order of the vibrators 12c, 12b, and 12a.
  • the driver perceives the apparent motion phenomenon in which the vibration source is moving from the center of the upper circular arc portion of the steering wheel 11 toward the grip portion A1. That is, the information that the window W is moving in the closing direction is transmitted to the driver's hand by tactile stimulation via the vibration transmission units B1 and B2 of the information presentation device 10.
  • the information generating unit 15 is configured to select and vibrate one vibrator from the plurality of vibrators 12a to 12g installed along the annular portion of the steering wheel 11.
  • the information emitted from the vehicle can be transmitted to the driver's hand as a tactile stimulus.
  • the information presentation device 10 of the first embodiment can present information to the driver with high accuracy with weak stimulation intensity. Thereby, the energy amount which the information presentation apparatus 10 consumes can be reduced.
  • the vibration transmitting parts B1 and B2 are positioned at the gripping parts A1 and A2 of the steering wheel 11, the vibrations of the vibrators 12a to 12g are presented to the driver while the driver grips the gripping parts A1 and A2. can do. Therefore, information can be perceived without the driver taking his hand off the steering wheel 11 or without the driver taking his gaze off the front of the vehicle.
  • the gripping portions A1 and A2 are provided at two places on the steering wheel 11 and the seven vibrators 12a to 12g are embedded in the steering wheel 11, a time difference is provided in the vibration start timing for the plurality of vibrators 12. By sequentially driving, it is possible to make the driver perceive the apparent movement phenomenon that the vibration source is moving.
  • the driver can operate the window W without releasing the hand from the steering wheel 11.
  • the opening / closing position of the window W is presented to the driver by tactile stimulation via the vibration transmitting portions B1 and B2 provided on the steering wheel 11, the driver does not release his hand from the steering wheel 11, and The opening / closing position and operating state of the window W can be perceived without directing the line of sight toward the window W.
  • the vibrators 12a to 12g are embedded in the steering wheel 11, if the vibrators 12a to 12g do not vibrate even if the driver's hand touches the steering wheel 11, the driver does not vibrate the vibrators 12a to 12g. There is no perception of the existence of. That is, even if the driver grips a position other than the gripping portions A1 and A2 on the steering wheel 11 in which the vibrators 12a to 12g are embedded, there is no sense of discomfort in the hand feeling.
  • FIG. 4 is a configuration diagram of the information presentation device 20.
  • FIG. 5 is a block diagram illustrating a configuration of the information presentation device 20. As shown in FIGS. 4 and 5, the information presentation apparatus 20 according to the second embodiment is different from the information presentation apparatus 10 according to the first embodiment in the position and quantity of transducers and the position of the switch.
  • the steering wheel 11 includes vibrators 12a to 12g and switches 13a and 13b.
  • the steering wheel 21 includes vibrators 22a and 22b and switches 13a and 13b.
  • the steering wheel 21 of the second embodiment has an annular outer shape, and steers the vehicle by the driver's operation.
  • gripping portions A21 and A22 are provided at the left and right positions above the center of the steering wheel 21 as viewed from the driver facing the steering wheel 21.
  • the positions of the gripping portions A21 and A22 on the steering wheel 21 are positions corresponding to 10:10 of a 12 hour clock which is an ideal position when the driver grips the steering wheel 21.
  • vibration transmitting portions B21 and B22 that transmit the vibration propagated from the vibrators 22a and 22b to the driver's hand are installed at the positions of the gripping portions A21 and A22.
  • the vibrators 22a and 22b are respectively provided at left and right positions above the center as viewed from the driver facing the steering wheel 21, and these positions are preferably positions corresponding to 10:10 of a 12-hour clock. .
  • the vibrators 22a and 22b are embedded in the steering wheel 21 of the second embodiment and are connected to the control unit 24 by the signal line W1. Yes.
  • vibration motors can be used as the vibrators 22a and 22b.
  • the entire switch 23a, 23b is not embedded in the steering wheel 21, but, like the switch 13a, 13b of the first embodiment, the steering wheel protrudes inward from the inner peripheral portion of the annular portion of the steering wheel 21. 21 is fixed.
  • switches 23a and 23b are installed in close proximity to the vibrators 22a and 22b at the left and right positions above the center as viewed from the driver facing the steering wheel 21, and this position is at 10:10 on the 12 hour clock. It is preferable that the position corresponds to. Similar to the switches 13a and 13b of the first embodiment, momentary switches can be employed as the switches 23a and 23b.
  • FIG. 6 is a configuration diagram showing the operation of the information presentation device 20.
  • the virtual vibration source 24 (that is, the virtual vibration sources 24a, 24b, 24c, 24d, and 24e) is generated by changing the vibration intensity of the vibrators 22a and 22b, and the steering wheel.
  • the vibration is transmitted to the driver's hand that holds 21.
  • the driver's hands can be perceived as if the virtual vibration source 24c corresponding to the intermediate position between both is vibrated.
  • the vibration intensity of either one of the vibrators 22a and 22b is changed to cause a difference in the vibration intensity between the two, the driver perceives that the vibration source is moving to the vibrator side having a large vibration intensity. Can be made.
  • the vibration intensity of the vibrator 22a When the vibration intensity of the vibrator 22a is gradually increased from the vibration intensity of the vibrator 22b from the state in which the vibrators 22a and 22b vibrate at the same vibration intensity, the position of the vibration source perceived by the driver. Moves from the gripping part A22 toward the gripping part A21 in the order of the virtual vibration source 24c, the virtual vibration source 24b, and the virtual vibration source 24a. On the contrary, if the vibration intensity of the vibrator 22b is gradually increased compared with the vibration intensity of the vibrator 22a from the state where the vibrators 22a and 22b vibrate at the same vibration intensity, the vibration perceived by the driver. The position of the source moves from the gripping part A21 toward the gripping part A22 in the order of the virtual vibration source 24c, the virtual vibration source 24d, and the virtual vibration source 24e.
  • FIG. 5 A usage example 1 of the information presentation apparatus 20 according to the second embodiment will be described. As shown in FIG. 5, the information presentation device 20 according to the second embodiment presents a direction when the vehicle is guided to the destination in conjunction with the car navigation system N.
  • the control unit 24 selects a vibration intensity of each of the vibrators 22a and 22b and generates a drive signal.
  • the control unit 24 transmits drive signals to the vibrators 22a and 22b, thereby causing the vibrators 22a and 22b to vibrate simultaneously.
  • one of the virtual vibration sources 24a to 24e between the vibrators 22a and 22b vibrates, and the vibration is propagated to the vibration transmitting units B21 and B22.
  • FIG. 7 is a block diagram illustrating a configuration according to usage example 2 of the information presentation apparatus 20.
  • the information presentation device 20 using the switches 23a and 23b can be used to present the opening / closing position of the window W of the driver's seat of the vehicle.
  • the switch 23a is a closing switch for the window W
  • the switch 23b is an opening switch for the window W
  • the switch 23a is in a state where the driver holds the steering wheel 21 while gazing forward while driving the vehicle. Or press 23b to stop at an appropriate position.
  • the vibration intensity of the left and right vibrators 22a and 22b changes according to the opening / closing position of the window W.
  • the virtual vibration sources 24a to 24e correspond to the opening / closing positions of the window W.
  • the window W is fully closed. ing.
  • the window W is fully opened.
  • the window W is closed more than half but is not completely closed.
  • the window W is opened more than half, but not fully opened.
  • the control unit 24 drives the vibrators 22a and 22b with the same vibration intensity by the drive signal.
  • the vibration intensity of the vibrator 22a When the vibration intensity of the vibrator 22a is larger than that of the vibrator 22b, the position of the vibration source perceived by the driver is closer to the virtual vibration source 24a than the virtual vibration source 24c, and the window W is closed more than half. Is presented. Further, when the vibration intensity of the vibrator 22b is made larger than that of the vibrator 22a, the vibration reduction position perceived by the driver is closer to the virtual vibration source 24e than the virtual vibration source 24c, and the window W is opened more than half. Presented state.
  • the information presentation apparatus 20 holds the steering wheel 21 in addition to the visual information presentation method for displaying the map and the traveling direction on the display and the audio information presentation method using the voice guide. By presenting tactile information through the driver's hand, the driver can perceive the information as appropriate without removing the line of sight from the front of the vehicle.
  • the vibration intensity of the vibrators 22a and 22b it is possible to make the driver perceive that the vibration sources actually exist at the positions of the five virtual vibration sources 24a to 24e. That is, two or more vibration sources can be realized using two vibrators, and thus detailed information can be presented to the driver.
  • Modification 1 a modification of the information presentation device 20 according to the second embodiment will be described.
  • the vibration transmission characteristic of the steering wheel 21 is measured in advance, and the vibration is transmitted from the control unit 24 according to the transfer function of the vibration propagating through the steering wheel 21 instead of the difference in vibration intensity between the vibrators 22a and 22b.
  • the driver is made to perceive as if the vibration source is actually present at any one of the virtual vibration sources 24a to 24e.
  • the vibrators 22a and 22b may be driven by drive signals having different phases.
  • a plurality of vibration sources 22a and 22b of the information presentation device 20 are used to localize a plurality of vibration sources to be perceived by the driver, and thus provide information to the driver by tactile stimulation. Can do.
  • Modification 2 In the second modification, the vibrators 22a and 22b are not driven according to the transfer function specific to the material of the steering wheel 21, but as if any of the virtual vibration sources 24a to 24e according to the transfer function of an arbitrary virtual object.
  • the vibrators 22a and 22b may be driven by drive signals having different phases. That is, in the modified example 2, although the driver's hand is in contact with the vibration transmission parts B21 and B22 of the steering wheel 21, a material different from that of the steering wheel 21 and the vibration transmission parts B21 and B22 is propagated.
  • a tactile stimulus such as that can be transmitted to the driver's hand.
  • FIG. 8 is a configuration diagram of the information presentation device 30.
  • FIG. 9 is a block diagram illustrating a configuration of the information presentation device 30.
  • the steering wheel 11 includes seven vibrators 12a to 12g.
  • the information presentation apparatus 30 according to the third embodiment includes a steering wheel 31 and eight vibrators 32 (that is, vibrators 32a, 32b, 32c, 32d, and 32e). 32f, 32g, 32h), a switch 33a, and a pointing device 33b.
  • the steering wheel 31 has an annular outer shape, and a steering center portion 31a is provided at the center of the annular portion.
  • grips A31 and A32 are provided at the ends in the left-right direction when the driver of the vehicle faces the steering wheel 31.
  • the lengths of the gripping portions A31 and A32 of the third embodiment are L as in the gripping portions A1 and A2 of the first embodiment.
  • vibration transmission parts B31 and B32 are provided at the positions of the gripping parts A31 and A32 of the third embodiment.
  • the vibrators 32a to 32h are embedded in the steering center portion 31a.
  • the vibrators 32 a to 32 h are arranged along a rectangular shape surrounding the center of the steering wheel 31.
  • vibration motors can be employed as the vibrators 32a to 32h.
  • a momentary switch can be adopted as the switch 33a of the third embodiment.
  • the switch 33a is positioned in the grip portion A31 on the left side of the steering wheel 31 when the driver faces the steering wheel 31. Similar to the first and second embodiments, the switch 33a of the third embodiment is not embedded entirely in the steering wheel 31, but is fixed so as to protrude inward from the inner peripheral portion of the annular portion of the steering wheel 31. Yes.
  • the pointing device 33b is a joystick that can be operated in four directions. A desired direction can be input by operating the pointing device 33b so as to be tilted from a neutral position.
  • the pointing device 33b is located in the grip portion A32 on the right side of the steering wheel 31 when the driver faces the steering wheel 31.
  • the control unit 34 selects a transducer to be driven from the transducers 32a to 32h, and transmits a drive signal to the selected transducer. For example, when the control unit 34 selects the transducer 32a from the transducers 32a to 32h and transmits a drive signal, the transducer 32a vibrates, and the vibration propagates through the steering wheel 31 to reach the vibration transmitting units B31 and B32. To do. Thereby, the vibration is transmitted to the driver's hand touching the vibration transmitting portions B31 and B32.
  • the vibration transmission units B31 and B32 have different vibration strengths.
  • the driver perceives the vibration of the vibration transmission unit B31 with the left hand and the vibration of the vibration transmission unit B32 with the right hand.
  • the switch 33a is assigned as a trigger for presenting information indicating the traveling direction of the vehicle toward the coordinates of the destination set in the car navigation system N, and the map is scrolled on the display of the car navigation system N.
  • a pointing device 33b is assigned as an input device for inputting a direction to perform.
  • the control unit 34 outputs a driving signal based on the information generated by the information generating unit 15 to vibrate the vibrators 32a to 32h.
  • the center position of the transducers 32a to 32h arranged along the rectangular shape is the vehicle position
  • the transducer 32b indicates the forward direction
  • the transducer 32d indicates the left direction
  • the transducer 32e is in the right direction.
  • the vibrator 32g indicates the backward direction.
  • the information generating unit 15 causes the current vehicle to Two-dimensional information indicating the direction of the destination with respect to the position is transmitted to the control unit 34.
  • the control unit 34 transmits a drive signal for selecting and vibrating one transducer from the transducers 32a to 32h based on the two-dimensional information transmitted from the information generating unit 15 of the car navigation system N.
  • a drive signal for selecting and vibrating one transducer from the transducers 32a to 32h based on the two-dimensional information transmitted from the information generating unit 15 of the car navigation system N.
  • one vibrator selected from the vibrators 32a to 32h vibrates, and the vibration propagates through the steering wheel 31 to reach the vibration transmitting portions B31 and B32. Vibration is transmitted to the hand of the person.
  • the driver operates the pointing device 33b with the right hand to scroll the map, and then displays the current position for the point indicated on the map on the display. It is also possible to confirm the direction of the vehicle. Specifically, when the central position of the transducers 32a to 32h is made to coincide with the point shown on the map of the display, the control unit 34 outputs a drive signal based on information from the information generating unit 15. By vibrating the vibrators 32a to 32h, the vibrator 32b indicates the front direction of the vehicle, the vibrator 32d indicates the left direction of the vehicle, the vibrator 32e indicates the right direction of the vehicle, and the vibrator 32g is the rear side of the vehicle. Show directions.
  • the driver operates the car navigation system N and operates the pointing device 33b with the right hand to scroll the map, and then presses the switch 33a with the left hand.
  • the information generation unit 15 of the car navigation system N generates two-dimensional information indicating the direction from the point indicated on the map on the display toward the position of the vehicle and transmits the two-dimensional information to the control unit 34.
  • the control unit 34 outputs a drive signal based on the two-dimensional information, and selects and vibrates one vibrator from the vibrators 32a to 32h.
  • the driver can perceive the position where the vibrators 32a to 32h vibrate. That is, information indicating the direction from the point on the map on the display toward the position of the vehicle can be presented to the driver as a tactile stimulus through the vibration transmission units B31 and B32 of the steering wheel 31.
  • the information presentation device 30 is connected to sensors provided in the car navigation system N and presents external information on the vehicle to the driver.
  • the sensors provided in the car navigation system N there is a distance sensor having a detection region in the external space from the outer surface of the vehicle.
  • sensors that detect other vehicles and obstacles that exist on the side and rear of the vehicle, and sensors that detect preceding vehicles that exist in front of the vehicle. .
  • the control unit 34 When the central position of the vibrators 32a to 32h is the position of the vehicle, the control unit 34 outputs a drive signal based on the information from the information generating unit 15 to drive the vibrators 32a to 32h, thereby vibrating.
  • the child 32b indicates the front direction of the vehicle
  • the vibrator 32d indicates the left direction of the vehicle
  • the vibrator 32e indicates the right direction of the vehicle
  • the vibrator 32g indicates the rear direction of the vehicle.
  • a detection signal is transmitted from the above-described sensors to the information generation unit 15.
  • the detection signals of the sensors are received by the detection unit 15a of the information generation unit 15, and it is determined which direction is a detection signal from a sensor having a detection region with respect to the vehicle.
  • the information generation unit 15 indicates the direction from the vehicle to the obstacle or the surrounding vehicle, generates two-dimensional information, and transmits the two-dimensional information from the transmission unit 15b to the control unit 34.
  • the control unit 34 outputs a drive signal based on the two-dimensional information of the information generating unit 15, and selects any one of the transducers 32a to 32h to vibrate.
  • information indicating the position of the obstacle or the surrounding vehicle with respect to the current position of the vehicle can be presented to the driver as a tactile stimulus.
  • the use example 2 has an effect of assisting a driver who is unfamiliar with driving the vehicle at the time of parking and stopping such as garage storage or parallel parking.
  • a sensor for detecting the relative movement direction between the vehicle and the surrounding vehicle can be mounted on the vehicle.
  • information indicating the relative movement direction of the vehicle and the surrounding vehicle can be presented to the driver by tactile stimulation.
  • the driver can be alerted by presenting to the driver that the surrounding vehicle is moving in the direction approaching the vehicle.
  • FIG. 10 is a block diagram illustrating a configuration of the information presentation device 30.
  • external information of the vehicle is presented to the driver by the information presentation device 30 in conjunction with the sensors S1 provided in the vehicle.
  • a traffic system is known that includes an image sensor having a visual field in front of a running vehicle, and identifies lane markings (lane boundary lines, etc.) provided on both sides of the lane.
  • image information is transmitted from the sensor S1 such as an image sensor to the information generation unit 15, and the information generation unit 15 receives two-dimensional information indicating the departure direction when the vehicle deviates from the lane to the control unit 34.
  • the control unit 34 drives the vibrators 32a to 32h based on the two-dimensional information transmitted from the information generating unit 15.
  • the center position of the vibrators 32a to 32h is the current position of the vehicle, and the control unit 34 selects and vibrates at least one of the vibrators 32a to 32h, thereby presenting the departure direction of the vehicle.
  • the information presentation device 30 can alert the driver of the vehicle.
  • usage example 4 of the information presentation device 30 will be described with reference to FIGS. 8 and 10.
  • external information of the vehicle is presented to the driver by the information presentation device 30.
  • weather conditions such as wind speed that affect driving are presented by methods other than vision and hearing.
  • a wind direction and wind speed sensor for detecting the wind direction and wind speed outside the vehicle is provided in the vehicle as sensors S 2, and the detection signal is transmitted to the information generation unit 15.
  • Information is generated when the detection signal of the wind direction wind speed sensor S2 indicates that the wind is higher than the wind speed preset by the driver or wind speed higher than the wind speed preset at the time of designing the vehicle as the wind speed affecting the steering of the vehicle.
  • the unit 15 generates the wind direction as two-dimensional information and transmits it to the control unit 34.
  • the control unit 34 selects and vibrates any one of the vibrators 32a to 32h based on the two-dimensional information of the information generating unit 15.
  • the vibration of the selected vibrator is transmitted as a tactile stimulus to the driver's hand.
  • the information presentation device 30 can present information indicating the wind direction outside the vehicle to the driver.
  • the information presentation device 30 of the third embodiment has the same effects as the information presentation device 10 of the first embodiment.
  • the pointing device 33b connected to the control unit 34 is attached to the steering wheel 31, the operation when the driver inputs a direction is easy to understand.
  • the vibrators 32a to 32h are two-dimensionally arranged so as to surround the central portion of the annular portion of the steering wheel 31, the direction of the vehicle and the surrounding vehicles, obstacles, etc. can be indicated to the driver at the central portion of the steering wheel 31. It can be presented as a tactile stimulus.
  • the steering wheel having an annular outer shape is adopted, but the shape of the steering wheel is not limited to this, and a rectangular steering wheel may be used. Further, the information presentation devices 10, 20, and 30 according to the first to third embodiments may be provided on a lever instead of the steering wheel. Even in this case, the same effect as described above can be obtained.
  • the vibration transmission portion may protrude from the outer surface of the steering wheel in order to bring the vibration transmission portion into close contact with the driver's hand.
  • the vibration transmitting unit may have an appropriate shape to the extent that the driver who operates the steering wheel does not feel discomfort or inconvenience.
  • the vibration motor is used as the vibrator, but the present invention is not limited to this.
  • a piezoelectric vibrator may be employed as the vibrator, and other materials may be used for the vibrator.
  • the momentary switch is used as the switch, but the present invention is not limited to this.
  • a micro switch, a slide switch, or a pressure switch may be used as the switch, and other materials may be used for the switch.
  • the five virtual vibration sources 24a to 24e are realized by the two vibrators 22a and 22b.
  • the vibration intensity ratio of the drive signal input to each vibrator 22a and 22b is set to human.
  • the number of virtual vibration sources may be increased or decreased as appropriate.
  • the information presentation apparatus 30 includes the pointing device 33b that performs input in four directions. However, the number of input directions may be increased or decreased as appropriate. For example, a pointing device capable of inputting in eight directions may be employed.
  • the switch 33a is disposed on the driver's left hand side and the pointing device 33b is disposed on the driver's right hand side. However, the positional relationship may be reversed. That is, the pointing device 33b may be disposed on the driver's left hand side, and the switch 33a may be disposed on the driver's right hand side.
  • the number of vibrators is not particularly limited, and can be appropriately increased or decreased. Moreover, you may comprise combining the component shown in Example 1 thru
  • the third embodiment is reconfigured in the same manner as the first embodiment, and a plurality of vibrators are selected from the vibrators 32a to 32h, and the vibrators are sequentially driven with a time difference provided at the time of starting the vibration. It may be. In this case, the vehicle direction information can be intuitively presented to the driver.
  • FIG. 11 is a graph illustrating a control waveform generated by the information presentation device 40 according to the fourth embodiment.
  • the horizontal axis indicates time, and the vertical axis indicates amplitude.
  • the vibrator 42a is disposed on the left side as viewed from the driver facing the steering wheel 21, and the vibrator 42b is disposed on the right side.
  • 11A shows the control waveform 102 of the vibrator 42a located on the left side of the steering wheel 21
  • FIG. 11B shows the control waveform 112 of the vibrator 42b located on the right side of the steering wheel 21.
  • the outer shape of the information presentation device 40 of the fourth embodiment is the same as that of the information presentation device 20 of the second embodiment (see FIG. 4). As shown in FIG. 5, the information presentation device 40 includes vibrators 42 a and 42 b instead of the vibrators 22 a and 22 b, and includes a control unit 44 instead of the control unit 24.
  • the vibrators 42a and 42b of the information presentation device 40 are configured by piezoelectric vibrators.
  • the information presentation apparatus 40 can control the vibration frequency in addition to the vibration intensity of the vibrators 42a and 42b.
  • the range of vibration frequencies that humans can easily perceive is 150 Hz to 200 Hz.
  • the vibration intensity of the vibrators 42a and 42b depends on the rotational speed of the eccentric motor if the amount of eccentricity is constant. For this reason, if it is going to control vibration intensity to desired intensity, there is a possibility that the vibration frequency of vibrators 42a and 42b cannot be set to the above-mentioned perceptual vibration frequency.
  • the vibration intensity and the vibration frequency can be easily controlled independently, so that the vibration frequencies of the vibrators 42a and 42b are within the range of the perceptual vibration frequency.
  • the control unit 44 is connected to the vibrators 42a and 42b. Unlike the control unit 24 of the second embodiment, the control unit 44 of the fourth embodiment controls the vibrators 42a and 42b so that the driver holding the grips A21 and A22 of the steering wheel 21 perceives the apparent motion phenomenon. That is, the control unit 44 generates a control waveform so that the vibration source can be perceived as moving in the left-right direction when viewed from the driver facing the steering wheel 21.
  • the control unit 44 starts the vibration of the vibrator 42a at time TL (see FIG. 11 see (a)), and starts the vibration of the vibrator 42b at time T R which is delayed from the time only T L constant time interval ⁇ T reference (FIG. 11 (B)). That is, the control unit 44 generates a control waveform 102 for vibrating the vibrator 42a and a control waveform 11 for vibrating the vibrator 42b, and generates vibrations whose phases are shifted by a certain time interval ⁇ T.
  • the control waveform 102 generated by the control unit 44 increases the amplitude gradually after starting the vibration of the vibrator 42a at time TL , and then gradually decreases the amplitude to reduce the vibration of the vibrator 42a. Stop.
  • the control waveform 112 generated by the control unit 44 gradually increases its amplitude after starting the vibration of the vibrator 42b at the time TR, and then gradually decreases the amplitude of the vibrator 42b. Stop vibration.
  • the control unit 44 When the control unit 44 vibrates the vibrator 42a with the control waveform 102, the vibration intensity of the vibrator 42a gradually increases while the amplitude of the control waveform 102 is increasing. At this time, the control unit 44 causes the driver who perceives the vibration of the vibrator 42a to feel that the vibration source is approaching the position of the vibrator 42a. While the amplitude of the control waveform 102 is decreasing, the vibration intensity of the vibrator 42a gradually decreases. At this time, the control unit 44 causes the driver who perceives the vibration of the vibrator 42a to feel that the vibration source moves away from the vibrator 42a.
  • the control unit 44 vibrates the vibrator 42b with the control waveform 112
  • the vibration intensity of the vibrator 42b gradually increases while the amplitude of the control waveform 112 is increasing.
  • the control unit 44 causes the driver who perceives the vibration of the vibrator 42b to feel that the vibration source is approaching the position of the vibrator 42b.
  • the amplitude of the control waveform 112 is decreasing
  • the vibration intensity of the vibrator 42b gradually decreases.
  • the control unit 44 causes the driver who perceives the vibration of the vibrator 42b to feel that the vibration source moves away from the vibrator 42b.
  • the vibration source approaches the vibrator 42a due to a phase difference corresponding to the time interval ⁇ T between the control waveforms 102 and 112, and the time T L
  • the driver feels that the vibration source moves toward the vibrator 42b.
  • the control unit 44 first vibrates the vibrator 42b, and then the constant time interval ⁇ T.
  • the vibrator 42a is vibrated with a delay.
  • Control waveforms 102 and 112 generated by the control unit 44 to vibrate the vibrators 42a and 42b can be expressed by Equations 1 and 2.
  • Equation 1 shows the control waveform 102 (see FIG. 11A) of the left vibrator 42a as seen from the driver, and Equation 2 shows the control waveform 112 (see FIG. 11B of the right vibrator 42b as seen from the driver). ))).
  • the control waveforms 102 and 112 are expressed as functions A L (t) and A R (t) that change with time.
  • a control waveform 102 expressed by Equation 1 is a waveform obtained by amplitude-modulating a carrier wave, which is a sine wave having a frequency f and an amplitude A, with a modulation wave 101 expressed by sin (2 ⁇ fm (T ⁇ T L )).
  • a control waveform 112 expressed by Equation 2 is a waveform obtained by amplitude-modulating a carrier wave, which is a sine wave of frequency f and amplitude A, with a modulation wave 111 expressed by sin (2 ⁇ fm (T ⁇ T R )).
  • Fm included in Equation 1 and Equation 2 indicates the number of times the modulated waves 101 and 111 repeat per unit time, and in Example 4, the number of repetitions per second.
  • the frequency f of the control waveforms 102 and 112 is set to 150 Hz.
  • Modulated wave 101 and 111 control unit 44 generates the time T L, T R has a chevron waveform amplitude starts at the time to the vibration source has finished moving from vibration source starts moving Is expressed by the time from when the amplitude of the modulated waves 101 and 111 starts to increase until the amplitude of the modulated waves 101 and 111 converges.
  • the modulated waves 101 and 111 have a waveform corresponding to a half cycle of a sine wave having a low frequency of about 0.5 Hz. This is to make the driver perceive that the time from when the vibration source starts moving to when the vibration source finishes moving is 1 second.
  • the sine wave of 0.5 Hz is a frequency lower than the human perceived vibration frequency
  • the vibration is used as a tactile stimulus only by the modulation waves 101 and 111 having a waveform corresponding to a half cycle of the sine wave of 0.5 Hz. It is difficult for the driver to perceive. For this reason, as shown in Equations 1 and 2, amplitude modulation is performed by multiplying the modulated waves 101 and 111 and a sine wave of frequency f.
  • T L ⁇ T R , ⁇ T 0.2 seconds.
  • the vibrators 42a and 42b vibrate by inputting control waveforms 102 and 112 whose amplitudes change according to time t from the control unit 44 as shown in Equations 1 and 2.
  • the control unit 44 generates the control waveforms 102 and 112 by amplitude-modulating the modulated waves 101 and 111 for causing the driver to perceive the apparent motion phenomenon using the carrier wave of the perceptual vibration frequency. 102 and 112 are output to the vibrators 42a and 42b to vibrate the vibrators 42a and 42b.
  • the control unit 44 separately vibrates the vibrators 42 a and 42 b and transmits the modulated wave vibration to the driver, so that the vibration source moves in the left-right direction of the steering wheel 21. Can give the driver a unique feeling.
  • the frequency fm of the modulated waves 101 and 111 is set to 0.5 Hz
  • the frequency f of the control waveforms 102 and 112 is set to 150 Hz
  • the vibration of the vibrator 42a is started until the vibration of the vibrator 42b is started.
  • the time interval is not limited to these values. That is, the frequency and time interval related to the control waveform for driving the vibrator may be appropriately changed so that the driver can easily perceive vibration as a tactile stimulus.
  • control waveforms 102 and 112 are defined by Equation 1 and Equation 2, but the control waveforms 102 and 112 are not limited to Equation 1 and Equation 2.
  • the value of the carrier wave amplitude A in Equations 1 and 2 may not be set to the same value in the control waveforms 102 and 112.
  • the control unit 44 may repeat the control waveforms 102 and 112 a plurality of times with the above-described phase difference. That is, from the time T L and the time T L + 1 / 2fm repeating the control waveform 102 as one cycle, the time T R + 1 / 2fm from time T R may be repeated a control waveform 112 as one cycle. Alternatively, the control waveforms 102 and 112 may be repeated from time T L to time T R + 1 / 2fm as one cycle. In addition, the control waveforms 102 and 112 may be repeated a plurality of times with a fixed time interval or an arbitrary time interval.
  • piezoelectric vibrators are used for the vibrators 42a and 42b, but a voice coil motor (VCM) can be adopted as a vibrator capable of independently controlling the frequency and the vibration strength.
  • VCM voice coil motor
  • a device that can be used as the vibrators 42a and 42b a device that can independently control the frequency and the vibration intensity can be appropriately employed in addition to the piezoelectric vibrator and the VCM.
  • FIG. 12 is a graph showing control waveforms generated by the control unit 54 of the information presentation device 50 to vibrate the vibrators 42a and 42b.
  • the horizontal axis shows time, and the vertical axis shows amplitude.
  • 12A shows a control waveform for driving the vibrator 42a
  • FIG. 12B shows a control waveform for driving the vibrator 42b.
  • the outer shape of the information presentation device 50 of the fifth embodiment is the same as that of the information presentation device 20 of the second embodiment, and includes vibrators 42a and 42b instead of the vibrators 22a and 22b, and a control unit 54 instead of the control unit 24. Is provided. Unlike the control unit 24 of the second embodiment and the control unit 44 of the fourth embodiment, the control unit 54 of the fifth embodiment gives the driver a feeling that the vibration source moves discretely.
  • vibration sources move discretely means that the virtual vibration sources 24a, 24b, 24c, 24d, and 24e that are spaced apart from each other as shown in FIG. 6 actually exist as vibration sources. This means that such a tactile stimulus is given to the driver by the vibrators 42a and 42b. For example, after making the driver perceive as if the virtual vibration source 24a is an actual vibration source, the vibration of the virtual vibration source 24a is stopped, and then the virtual vibration source 24b is an actual vibration source. By making the driver perceive in this way, the driver feels as if the vibration source is sequentially moving away from the predetermined distance.
  • the control unit 54 sequentially drives the virtual vibration sources 24a, 24b, 24c, 24d, and 24e in the interval between the vibrators 42a and 42b, and makes the driver perceive a sense that the vibration sources are discretely moved in this order. A control waveform is generated for.
  • the control unit 24 of the second embodiment changes the vibration intensity ratio of the vibrators 22a and 22b
  • the control unit 54 of the fourth embodiment provides a time difference in the vibration start timing of the vibrators 42a and 42b, and The time difference is changed.
  • the control unit 54 outputs a rectangular wave with an amplitude A 1L (see FIG. 12A) to the vibrator 42a in order for the driver to perceive the virtual vibration source 24a to sense the localization of the vibration source. Also it outputs a rectangular wave of amplitude A 1L small amplitude A 1R than with a delay time interval [Delta] T 1 from the square wave with an amplitude A 1L (see FIG. 12 (B)) to the oscillator 42b.
  • the control unit 54 uses a rectangular wave having an amplitude A 2L smaller than the amplitude A 1L (see FIG. )) Is output to the vibrator 42a. Further, it outputs a rectangular wave of amplitude A the amplitude of a rectangular wave with a delay time interval [Delta] T 2 of 2L A 2L large amplitude A 2R than smaller amplitude A 1R than the vibrator 42b.
  • the time interval ⁇ T 2 is shorter than the time interval ⁇ T 1 .
  • the vibration intensity of the vibration source 42a becomes weaker and the vibration intensity of the vibration source 42b becomes stronger than when the vibration sources 42a and 42b are vibrated so that the vibration source is localized at the virtual vibration source 42a. Since the time interval from when the driver perceives the vibration of the source 42a until the driver perceives the vibration of the vibration source 42b is shortened, it is as if the vibration source has moved from the virtual vibration source 24a to the virtual vibration source 24b. Such a feeling can be perceived by the driver.
  • the control unit 54 adjusts the amplitude of the vibrator 42a.
  • the step size is reduced stepwise, and the vibration start timing of the vibrator 42a is delayed stepwise.
  • the control unit 54 increases the amplitude of the vibrator 42b stepwise and advances the vibration start timing of the vibrator 42b stepwise.
  • the control unit 54 of the fifth embodiment divides time T 1 to time T 5 at intervals of 0.25 seconds corresponding to the virtual vibration sources 24a to 24e. As shown in FIG. 12A, the control unit 54 outputs a rectangular wave so that the vibration start timing of the vibrator 42a is before and after each time. As shown in FIG. 12B, time intervals ⁇ T 1 to ⁇ T 5 between the vibration start timing of the vibrator 42a and the vibration start timing of the vibrator 42b are set as follows.
  • the control unit 54 controls the vibrators 42a and 42b to vibrate a plurality of times by providing a time difference between the vibration start timing of the vibrator 42a and the vibration start timing of the vibrator 42b. ing.
  • the control unit 54 gradually decreases the time difference between the vibration start timing of the vibrator 42a and the vibration start timing of the vibrator 42b.
  • the time difference between the vibration start timings of the vibrators 42a and 42b is 0 second.
  • the controller 54 increases the time difference of the vibration start timing as the vibration source approaches the vibrator 42a or the vibrator 42b.
  • the control unit 54 controls the vibration start timing of the vibrators 42a and 42b in addition to the vibration intensity of the vibrators 42a and 42b, the driver perceives the sense that the vibration source moves discretely. Can be made. That is, in each of the plurality of virtual vibration sources 24a to 24e, it is possible to cause the driver to perceive the sensation as if the vibration source is localized and actually vibrates.
  • the control unit 54 vibrates the vibrators 42a and 42b five times in conjunction with each other, but the vibrators 42a and 42b may vibrate five times at different time intervals.
  • the number of vibrations of the vibrators 42a and 42b is not limited to five, but the number of vibrations is limited because the driver can perceive the sense that the vibration source moves as long as it is two or more times. It is not a thing.
  • only the time difference of the vibration start timing may be changed without changing the vibration intensity of the vibrators 42a and 42b. As a result, the driver can perceive the sense that the vibration source is moving in the left-right direction.
  • the vibration start timing and amplitude due to the rectangular wave are not limited to the above values.
  • FIG. 13 is a graph showing a control waveform generated by the control unit 64 for driving the vibrators 42a and 42b, where the horizontal axis shows time and the vertical axis shows amplitude.
  • the control unit 64 is a direction in which the line segment between the two vibrators 42a and 42b is orthogonal, and the vibration source moves in the vertical direction as viewed from the driver facing the steering wheel 21.
  • the vibrators 42a and 42b are controlled so as to make the driver perceive.
  • the control unit 64 generates a control waveform 103 obtained by multiplying the modulated wave 101 by a carrier wave that is a sine wave having a human perceptual vibration frequency.
  • the control waveform 103 of the sixth embodiment is different from the control waveform 102 of the fourth embodiment in that the frequency itself changes.
  • the carrier wave generated by the control unit 64 has a waveform whose frequency monotonously decreases. As shown in FIG. 13, the control unit 64 is swept frequency so that the relatively low frequency f t2 is at a relatively high frequency f t1 next vibration cycle stage at vibration start step (sweep).
  • the control waveform 103 generated by the control unit 64 can be expressed by Equation 3.
  • f (t) is a function indicating the frequency of the sine wave multiplied by the modulation wave 101.
  • a control waveform 103 in which the frequency is swept from 500 Hz to 50 Hz by the function A (t) is generated by the control unit 64.
  • sweeping from a low frequency to a high frequency may be performed.
  • the vibrators 42a and 42b are vibrated by the control waveform 103 in which the control unit 64 sweeps the frequency with time, so that the vibration source moves from a high position to a low position, or the vibration source The driver can perceive the sensation of moving from a low position to a high position as a tactile stimulus.
  • the single control waveform shown in FIG. 13 is used to make the driver perceive the sense that the vibration source moves in the vertical direction.
  • the vibration source is moved in the left-right direction. It is also possible to combine control waveforms that cause the driver to perceive the feeling of moving. That is, the control waveform shown in FIG. 13 is overlapped with the control waveform having a fixed time interval shown in the fourth embodiment, thereby driving the sense that the vibration source moves in an oblique direction combining the vertical direction and the horizontal direction. Can be perceived by a person.
  • the information presentation device 60 of the sixth embodiment can make the driver perceive the sense that the vibration source moves two-dimensionally on a two-dimensional plane that combines the vertical and horizontal directions. For example, it is possible to make the driver perceive a feeling that the vibration source moves on a virtual circumference on the two-dimensional plane or a feeling that the vibration source moves back and forth on the two-dimensional plane.
  • the two vibrators 42a and 42b may be operated independently. By operating the vibrators 42a and 42b independently, it is possible to realize a vibration source that moves in the vertical direction on the right side and the vertical direction on the left side, so that different information can be presented to the driver on the left and right sides. it can.
  • Example 6 the period of the modulated wave 101 is 1 second and the frequency of the control waveform 103 is swept from 500 Hz to 50 Hz, but is not limited to these values. Further, the mathematical formula for calculating the control waveform 103 by the control unit 64 is not limited to the mathematical formula 3.
  • the information presentation device 70 according to Example 7 of the present invention is configured so that the vibrators 42 a and 42 b are attached to the steering wheel 21 and controlled by the control unit 74.
  • 14A, 14B, and 14C show control waveforms generated by the control unit 74.
  • the upper graphs in FIGS. 14A, 14B, and 14C show the frequency components included in the control waveform
  • the horizontal axis shows the frequency
  • the vertical axis shows the amplitude.
  • 14A, 14B, and 14C are obtained by superimposing waveforms having different frequencies
  • the horizontal axis indicates time
  • the vertical axis indicates amplitude.
  • the control unit 74 of the seventh embodiment operates differently from the control unit 64 of the sixth embodiment, it causes the driver to perceive the feeling that the vibration source moves in the vertical direction as in the sixth embodiment.
  • control waveform 103 which sweeps a frequency with time was produced
  • the control unit 74 according to the seventh embodiment generates a control waveform by superimposing a plurality of sine waves having different frequencies.
  • the control unit 74 synthesizes sine waves of five frequencies f 1 to f 5 from low frequency to high frequency according to Equation 4, and further generates a control waveform that is amplitude-modulated by the modulated wave 101.
  • a control waveform containing a large amount of high-frequency components is generated from the sine waves of frequencies f 1 to f 5 .
  • the amplitude Af 100 is larger than the amplitude Af 200 of the sine wave f2.
  • the control part 74 changes the ratio which mixes each frequency component with time.
  • the mixing ratio of the low-frequency components is gradually reduced with time as shown in FIGS. 14 (B) and 14 (C).
  • a control waveform is formed by the sine wave f 4 and sine wave f 5 having relatively high frequencies, and the amplitude of the sine wave f 4
  • the amplitude Af 500 of the sine wave f 5 is larger than the Af 400 .
  • the control unit 74 changes the mixing ratio of each frequency component with time, shifts the control waveform from the low frequency component to the high frequency component, and drives the vibrators 42a and 42b.
  • the driver can perceive a feeling that the vibration source moves from the downward direction to the upward direction as viewed from the driver facing the steering wheel 21.
  • the control unit 74 can drive the vibrators 42a and 42b by changing the mixing ratio of each frequency component with the passage of time and shifting the control waveform from the high frequency component to the low frequency component. In this case, the driver can perceive a feeling that the vibration source moves from the upper direction to the lower direction as viewed from the driver facing the steering wheel 21.
  • control waveform that causes the driver to perceive the feeling that the vibration source moves in the vertical direction according to the seventh embodiment and the control waveform that causes the driver to perceive the feeling that the vibration source moves in the left and right direction according to the fourth embodiment are combined. You can also. Accordingly, it is possible to make the driver perceive a sense that the vibration source moves in an oblique direction, a circumferential direction, and a turning direction on a two-dimensional plane as viewed from the driver facing the steering wheel 21.
  • the frequency of the sine wave constituting the control waveform is not limited to five.
  • the mixing ratio of sine waves of a plurality of types of frequencies is not limited to the above numerical values.
  • control waveform generated by the control unit 74 is not limited to the mathematical formula 4, and the frequency components constituting the control waveform are not limited to five types. It is also possible to generate a control waveform having a plurality of vibration frequencies by inverse frequency conversion, in which the sine wave constituting the control waveform has an analog mixing ratio. For example, it is possible to set a continuously changing frequency spectrum and generate a control waveform by inverse Fourier transforming the frequency spectrum.
  • FIG. 15 shows the control waveform 105 generated by the control unit 84, the horizontal axis shows time, and the vertical axis shows amplitude.
  • the control unit 84 drives the vibrators 42 a and 42 b with the control waveform 105, and the driver feels that the vibration source moves in the front-and-rear direction as viewed from the driver facing the steering wheel 21. Make them perceive.
  • the control unit 84 In order to make the driver perceive the sense that the vibration source moves in the perspective direction, the control unit 84 generates a control waveform 105 simulating the Doppler effect, and vibrates the vibrators 42 a and 42 b with this control waveform 105. That is, the control unit 84 generates a control waveform 105 that is an amplitude-modulated wave obtained by multiplying the modulated wave 101 by a sine wave having a human perceptual vibration frequency. Further, the boundary time tc when the vibration source is localized to an intermediate point previously set in the direction of access of the front apprenticeship of the driver, and different frequencies in the first half and the second half portion T A of the control waveform 105 parts T B.
  • the latter part T B the frequency of the first half T A the time tc as a boundary showing how the vibration source in the first half of the control unit 84 controls the waveform 105 approaches the driver carrier wave, or generates a control waveform 105 the carrier wave is made lower than the frequency of the first half T a frequency of the second half T B by multiplying the modulated wave 101.
  • the control waveform 105 is expressed by Equation 5 that the frequency of the carrier wave is switched at time tc.
  • the driver can perceive the sense that the vibration source moves in the perspective direction. Therefore, as described in the second usage example of the third embodiment, the vehicle and the surrounding vehicles Relative movement information can be presented to the driver.
  • the driver perceive the sense that the vibration source moves in the vertical direction by the control waveform 105 generated by the control unit 84 of the eighth embodiment. It is also possible to combine the control waveform of the eighth embodiment with the control waveform of another embodiment. As a result, in addition to the sensation of the vibration source moving in an oblique direction, a circumferential direction, and a folding direction on a two-dimensional plane as viewed from the driver, the sensation of the vibration source moving in the perspective direction with respect to the driver Can be perceived.
  • tc 0.5 seconds
  • the modulated waves 101 and 111 are sine wave half-cycle waveforms, but the waveform of the modulated wave is not limited to this.
  • the modulated waves 101 and 111 may be triangular waves that increase in amplitude at a certain rate and then decrease in amplitude at a certain rate. At this time, the ratio of increasing the amplitude and the ratio of decreasing the amplitude can be appropriately determined.
  • the modulation wave may be a sawtooth wave.
  • the information presentation device of the present invention is mounted on a vehicle such as an automobile and presents various information by vibration through a driver's hand, and the driver provides information indicating the running state of the vehicle and external environment information of the vehicle. It can be presented without removing the line of sight from the front in the traveling direction.
  • the information presentation apparatus of the present invention can be mounted in addition to the vehicle. For example, in the display of an information terminal, a game machine, a virtual reality, etc., the operator's hand is vibrated to present various information. Also good.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Human Computer Interaction (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Controls (AREA)
  • Navigation (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

L'invention concerne un dispositif de présentation d'informations qui transmet des informations depuis, par exemple, un système de navigation d'une automobile installé dans un véhicule à un conducteur sous forme de stimulus tactile en commandant une pluralité de vibrateurs montés sur un volant de direction en utilisant une unité de commande. Les vibrateurs sont disposés à côté d'une partie de transmission des vibrations qui correspond à une partie de préhension du volant, et sont entraînés par des signaux d'entraînement de l'unité de commande avec des intensités de vibration souhaitées et avec des temporisations de commencement de vibrations souhaitées. Par exemple, deux vibrateurs sont disposés dans la partie de préhension du volant avec lesquels les deux mains du conducteur sont amenées en contact, et sont commandés indépendamment. De ce fait, une source de vibration virtuelle peut être produite, et le conducteur a la sensation que la source de vibration se déplace verticalement, horizontalement, ou d'avant en arrière devant le conducteur. De plus, le dispositif de présentation d'informations consomme moins d'énergie et est performant dans la mesure où les informations peuvent être présentées avec exactitude au conducteur même lorsque l'intensité de vibration des vibrateurs est faible.
PCT/JP2010/071914 2009-12-08 2010-12-07 Dispositif de présentation d'informations utilisant un stimulus tactile au moyen d'un vibrateur Ceased WO2011071044A1 (fr)

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US13/514,159 US9278705B2 (en) 2009-12-08 2010-12-07 Information presentation device using tactile stimulus with vibrator

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