JP6073033B2 - In-vehicle device - Google Patents

Description

  The present invention relates to an in-vehicle apparatus that receives safety / safety information using DSRC (Dedicated Short Range Communications).

  2. Description of the Related Art Conventionally, an in-vehicle device that receives various kinds of information such as safe driving assistance, caution warning, and emergency message by performing narrow area wireless communication using DSRC on a highway is known (see, for example, Patent Document 1). . In this in-vehicle device, the received sound is transmitted using an FM transmitter or the like, and the transmitted sound is received and reproduced by headphones or a mobile phone provided in the helmet.

JP 2012-164258 A

  By the way, various information transmitted using DSRC usually includes characters and images. In order to reproduce these together with sound, image display processing and TTS (Text to speech) corresponding to DSRC are used. A navigation device that can perform voice output processing such as the above is required. In addition, there is no metadata in various types of information to be transmitted, and the contents indicated by the contents of the data cannot be known even by the navigation device.

  The present invention was created in view of the above points, and an object of the present invention is to provide an in-vehicle device that can provide a user with the contents of safety / safety information received using DSRC with a simple configuration. Is to provide.

  In order to solve the above-described problem, the vehicle-mounted device of the present invention includes an information acquisition unit that acquires information on a safety and security system transmitted from a DSRC roadside device installed along a road via the DSRC vehicle-mounted device, Information content estimation means for estimating the content of information without using image information, text information, and voice information as distribution contents included in the information, and an estimated content notification for notifying the content of information estimated by the information content estimation means Means.

  By receiving information on safety and security and estimating the contents without using image information, text information, and voice information as the distribution contents, a complicated configuration for outputting image information and voice information is unnecessary. It is possible to provide users with general contents of safety / safety information with a simple configuration.

Moreover, different IDs are assigned to the above-described safety / security information for each information type . As a result, it is possible to estimate the content of the information assigned with the ID sent from the DSRC roadside unit and provide it to the user.

Moreover, the information content estimation means mentioned above estimates the content of information based on the information type corresponding to ID . In particular, the information acquired by the information acquisition means described above includes a code indicating the details of the restriction that specifies the road closure and other traffic restrictions, and the information content estimation means determines the content of the information based on the code. It is desirable to estimate This
Whether the road is closed or not can be known with certainty, and measures such as changing the route before reaching the closed place can be taken.

  The information described above is preferably caution / warning information to which ID 37 or ID 53 is assigned. With regard to the caution / warning information to which these ID numbers are assigned, it is possible to know at least whether or not the traffic is closed based on the code indicating the contents of the regulation, and a complicated configuration is not required to know the contents of the information.

  The information content estimation means further includes a current location / road identification means for identifying the current location of the vehicle and a road on the basis of the information acquired by the information acquisition means, and the information content estimation means includes an information type corresponding to the ID, a current location -It is desirable to estimate the content of information based on the current location and road identified by the road identification means. Since the current location of the vehicle and the road on which the vehicle is passing are known, it is possible to estimate the contents of the information in association with these.

  Moreover, it further comprises accident information storage means for storing accident information indicating whether or not there is an intersection as a frequent accident point in the vicinity of the above-mentioned DSRC roadside unit, and the information content estimation means includes an information type corresponding to the ID, It is desirable to estimate the content of information based on the current location and road identified by the current location / road identification means and the accident information stored in the accident information storage means. This makes it possible to estimate the cause when traffic congestion occurs.

  In addition, it is desirable that the above-mentioned information is sent from the DSRC roadside device at any timing when there is a traffic jam or a low-speed vehicle ahead, or when a merging vehicle is approaching at a merging point on the road. . Based on these causes, it becomes possible to distinguish at the timing when the traffic jam occurs and which one caused the traffic jam, and to notify the occurrence of the traffic jam and the cause thereof.

  The information described above is preferably safe driving support information to which ID 36 or ID 52 is assigned. For the safe driving support information to which these ID numbers are assigned, the cause of the traffic jam can be estimated based on the accident information, and a complicated configuration is not required to know the contents of the information.

  The information acquisition means further includes a restriction information confirmation means for confirming surrounding restriction information based on the information acquired by the information acquisition means described above, and the information content estimation means includes the information type corresponding to the ID and the current location / road identification means. It is desirable to estimate the contents of the information based on the identified current location and road and the surrounding restriction information confirmed by the restriction information confirmation means. By confirming the peripheral regulation information, it is possible to estimate the contents of the information in association with this confirmation item.

  Further, it is desirable that the restriction information confirmation unit described above confirms the peripheral restriction information based on the information assigned with the ID 32 acquired by the information acquisition unit. By receiving the information to which the ID 32 is assigned, it is possible to reliably and easily check the surrounding regulation information.

  Further, the information content estimation means described above determines whether a wide-area event or a local event has occurred based on the surrounding restriction information confirmed by the restriction information confirmation means. It is desirable to estimate the content of information based on it. This makes it possible to distinguish whether the information content is wide-area or local.

  The information described above is preferably emergency message information to which ID 20 or ID 40 is assigned. About the emergency message information to which these ID numbers are allocated, the rough contents of the emergency can be estimated by combining with the surrounding regulatory information, and a complicated configuration for knowing the contents of the information becomes unnecessary. .

  In addition, it is preferable that the estimated content notification unit described above provides a message whose content prepared in advance corresponds to the content of the estimated information. Since it is only necessary to prepare and output a message whose content is fixed in advance, a complicated configuration for outputting image information and audio information becomes unnecessary.

It is a figure which shows the whole audio apparatus structure of one Embodiment. It is a flowchart which shows the operation | movement procedure which receives ITS spot information, estimates the content, and provides to a user. It is a flowchart which shows the operation | movement procedure which receives ITS spot information, estimates the content, and provides to a user.

  Hereinafter, an audio device according to an embodiment to which an in-vehicle device of the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating an overall configuration of an audio apparatus according to an embodiment. The in-vehicle device of the present embodiment includes an audio device 1 and a DSRC in-vehicle device 2.

  The audio device 1 has a function of providing a user with a rough content of ITS spot information received by the DSRC in-vehicle device 2 corresponding to an ITS (Intelligent Transport Systems) spot. Has been. The DSRC in-vehicle device 2 transmits / receives ITS spot information by performing narrow area communication using the 5.8 GHz band ISM (Industry-Science-Medical) band with the DSRC roadside device 3 installed on the road. . At least in this embodiment, the DSRC in-vehicle device 2 corresponds to an ITS spot, and is an ITS spot that is safety / security information to which at least ID numbers of ID20, ID36, ID37, ID40, ID52, and ID53 are assigned. Used to receive information.

  The audio device 1 includes a control unit 10, an interface unit (IF) 20, an accident information storage unit 30, an audio processing unit 40, an amplifier 42, a speaker 44, a display processing unit 50, a display device 52, and an operation unit 60.

  The control unit 10 controls the entire audio apparatus 1 by executing a predetermined operation program using a CPU, a ROM, a RAM, and the like. Details of the control unit 10 will be described later. The interface unit 20 is for inputting and outputting signals to and from the DSRC in-vehicle device 2.

  The accident information storage unit 30 stores accident information indicating whether or not intersections in various places including the meeting point correspond to frequent accident points. This accident information indicates whether or not there is an intersection as a frequent occurrence point in the vicinity of the DSRC roadside unit 3, and it is desirable to periodically update the contents (accident information).

  The audio processing unit 40 is for playing back music data read by the control unit 10 from a predetermined storage medium (USB memory, hard disk device, CD, DVD, etc., not shown in FIG. 1). It performs audio decoding processing for each data format and outputs an audio signal. This audio signal is amplified by the amplifier 42 and output from the speaker 44. In practice, audio signals having two or more channels are reproduced and output, but in the configuration shown in FIG. 1, one amplifier 42 and one speaker 44 are shown in a simplified manner. .

  The display processing unit 50 is for displaying various operation screens and the like created by the control unit 10 and outputs a video signal including the operation screens and the like. This video signal is input to the display device 52 and video display is performed.

  The operation unit 60 is for accepting various operations by the user, and includes various switches and operation knobs. Note that the operation unit 60 may be configured by using a touch panel arranged on the screen of the display device 52, or the operation unit 60 may be configured by using a remote control unit or the like.

  Next, the control unit 10 will be described. As shown in FIG. 1, the control unit 10 includes an information acquisition unit 11, an information content estimation unit 12, an estimation content notification unit 13, a current location / road identification unit 14, and a regulation information confirmation unit 15. In this configuration, only the configuration necessary for receiving the ITS spot information, estimating the content, and providing the information to the user is shown.

  The information acquisition unit 11 acquires ITS spot information, which is safety / safety information sent from the DSRC roadside device 3, via the DSRC receiver 2. The information content estimation unit 12 estimates the content of the ITS spot information without using image information, character information, and audio information as distribution contents included in the ITS spot information acquired by the information acquisition unit 11. The estimated content notification unit 13 notifies (provides) the content of the ITS spot information estimated by the information content estimation unit 12 to the user. There are two types of contents to be provided to the user, voice and image, and messages with fixed contents are prepared in advance for both. Specific examples thereof will be described later.

  A different ID is assigned to each information type in the ITS spot information of the security / safety system. Specifically, in such ITS spot information, safe driving support information to which ID36 or ID52 is assigned, warning and warning information to which ID37 or ID53 is assigned, emergency message information to which ID20 or ID40 is assigned, and It is included. Further, in this embodiment, in order to estimate the contents of each piece of information, information to which ID3 is assigned and information to which ID32 is assigned are targeted for reception.

  The current location / road identification unit 14 identifies the current location of the vehicle and the road on the basis of the information assigned with ID3. The restriction information confirmation unit 15 confirms the restriction information (cause event, restriction contents) in the vicinity (the nearest link) based on the information to which the ID 32 is assigned.

  The information acquisition unit 11 is the information acquisition unit, the information content estimation unit 12 is the information content estimation unit, the estimation content notification unit 13 is the estimation content notification unit, the current location / road identification unit 14 is the current location / road identification unit, The restriction information confirmation unit 15 corresponds to the restriction information confirmation unit, and the accident information storage unit 30 corresponds to the accident information storage unit.

  The audio apparatus 1 of the present embodiment has such a configuration, and the operation thereof will be described next. 2 and 3 are flowcharts showing an operation procedure for receiving ITS spot information, estimating the contents thereof, and providing the information to the user.

  The information acquisition unit 11 determines whether the DSRC in-vehicle device 2 has received the ITS spot information (Step 100). If it has not been received, a negative determination is made and this determination is repeated. When the ITS spot information is received, an affirmative determination is made in the determination in step 100.

  Next, the information content estimation unit 12 determines whether ID 36 or ID 52 is assigned to the received ITS spot information (step 102). If these ID numbers are assigned, an affirmative determination is made. The fact that the ITS spot information assigned with these ID numbers has been received means that there is actually a traffic jam for some reason in the forward direction of the vehicle. In this case, the current location / road identification unit 14 identifies the current location of the vehicle and the road that is passing based on the ITS spot information to which ID3 is assigned (step 104). In addition, the information content estimation unit 12 confirms the accident occurrence point around the current location of the identified vehicle based on the accident information stored in the accident information storage unit 30 (step 106), and the nearest accident occurrence point is It is determined whether it is an intersection (merging) (step 108). An affirmative judgment is made when the nearest accident occurrence point is an intersection. In this case, the information content estimation unit 12 estimates that the actual traffic jam is caused by the nearest intersection (join) (step 110), and the estimated content notification unit 13 A fixed voice message of “Caution” is output from the speaker 44 and a fixed character message of “Caution (intersection)” is displayed on the screen of the display device 52 (step 112).

  If the nearest accident frequent occurrence point is not an intersection, a negative determination is made in the determination of step 108. In this case, the information content estimation unit 12 estimates that the actual traffic jam is due to the presence of a traffic jam tail or low speed vehicle ahead (step 114), and the estimated content notification unit 13 The fixed voice message “Caution for forward collision” is output from the speaker 44, and the fixed character message “Caution for forward collision” is displayed on the screen of the display device 52 (step 116).

  Further, if ID 36 or ID 52 is not assigned to the received ITS spot information, a negative determination is made in the determination of step 102. Next, the information content estimation unit 12 determines whether ID 37 or ID 53 is assigned to the received ITS spot information (step 118). If these ID numbers are assigned, an affirmative determination is made. Receiving the ITS spot information (attention / warning information) to which these ID numbers are assigned means that traffic closure or other traffic restrictions have occurred. In this case, the information content estimation unit 12 Then, the code indicating the regulation content included in the ITS spot information is confirmed (step 120), and it is determined whether or not a road closure has occurred (step 122). Specifically, when the code indicating the regulation content is “1”, it indicates “no traffic”, and when it is “8”, it indicates “large-scale traffic”, and the code matches any of these. In step 122, an affirmative determination is made. In this case, the estimated content notifying unit 13 outputs a fixed voice message of “no further traffic” from the speaker 44 and displays a fixed character message of “no traffic” on the screen of the display device 52 (step 124). ).

  On the other hand, if the code indicating the restriction content is other than “1” and “8”, a negative determination is made in the determination in step 122. In this case, the estimated content notification unit 13 outputs a fixed voice message of “this traffic restriction” from the speaker 44 and displays a fixed character message of “traffic restriction” on the screen of the display device 52 (step 126). ). Note that the warning / warning information to which ID 37 or ID 53 is assigned includes a code indicating the cause event in addition to the code indicating the restriction contents (for example, 1 = accident, 2 = fire, 3 = failed car, etc.). These causal events may be included in the audio output and display in step 126.

  If ID 37 or ID 53 is not assigned to the received ITS spot information, a negative determination is made in the determination of step 118. Next, the information content estimation unit 12 determines whether ID 20 or ID 40 is assigned to the received ITS spot information (step 128). If these ID numbers are assigned, an affirmative determination is made. Receiving ITS spot information (emergency message information) to which these ID numbers are assigned means "events that occurred in local locations such as accidents ahead" or "wide areas such as large-scale disasters and earthquakes" That one of the “events” has occurred. Although this ITS spot information alone cannot determine which event has occurred, the ITS spot information (event regulation link) of ID32 that is distributed at the same time restricts the regulation information (cause event, regulation content) of the nearest link. If it is confirmed, it can be determined whether the event is a wide area event or a local event (in the case of a wide area event, information such as disasters and closures due to earthquakes occurs at multiple points). Therefore, by checking whether or not the range is a wide area, it is determined whether a stop is promoted or a wide-area disaster has occurred.

  Next, the current location / road identification unit 14 identifies the current location of the vehicle and the road that is passing based on the ITS spot information to which ID3 is assigned (step 130). Based on the ITS spot information to which the ID 32 is assigned, the restriction information confirmation unit 15 confirms the restriction information (cause event, restriction contents) in the vicinity (the nearest link) (step 132). Further, the information content estimation unit 12 determines whether or not the same regulation information is output over a wide area around the current position of the vehicle (step 134). If the same regulation information is output, an affirmative determination is made. In this case, the information content estimation unit 12 estimates that a wide-area event has occurred (step 136), and acquires wide-area restriction information from the restriction information confirmed in step 132 (step 138). . The estimated content notification unit 13 outputs, for example, a fixed voice message “Wide area emergency message, earthquake occurrence” from the speaker 44 and a fixed character message “Emergency message (wide area, earthquake)” on the screen of the display device 52. Display (step 140).

  On the other hand, if the same restriction is not issued, a negative determination is made in the determination of step 134. In this case, the information content estimation unit 12 estimates that a local event has occurred (step 142), and acquires the nearest restriction information from the restriction information confirmed in step 132 (step 144). ). The estimated content notification unit 13, for example, outputs a fixed voice message “Emergency message ahead, closed” from the speaker 44, and displays a fixed character message “Emergency message (forward, closed)” on the screen of the display device 52. (Step 146).

  As described above, the audio apparatus 1 according to the present embodiment receives ITS spot information as information on safety and security, and estimates the contents without using image information, text information, and voice information as distribution contents. In addition, a complicated configuration for outputting image information and audio information is not necessary, and it is possible to provide the user with a rough content of safety / security information with a simple configuration.

  In addition, since different IDs are assigned to the ITS spot information for each information type, it is possible to estimate the contents of the ITS spot information sent from the DSRC roadside device 3 based on the ID and provide it to the user. It becomes.

  In addition, the ITS spot information serving as warning / warning information to which ID 37 or ID 53 is assigned includes a code indicating a restriction content for specifying road closure and other traffic restrictions, and the ITS spot information is based on this code. Estimate the content of the information. As a result, it is possible to surely know whether or not the road is closed, and it is possible to take measures such as changing the route before reaching the closed place.

  Further, based on the ITS spot information to which ID3 is assigned, the current location of the vehicle and the road on which the vehicle is passing are specified, and in association with these, the ITS spot information as the safe driving support information to which ID36 or ID52 is assigned. The contents can be estimated.

  In addition, accident information indicating whether or not there is an intersection as a frequent accident point in the vicinity of the DSRC roadside device 3 is stored. The information type corresponding to the ID, the current location, the road on which the vehicle is traveling, and the accident information Based on the above, it becomes possible to estimate the cause when a traffic jam occurs.

  Further, the surrounding restriction information is confirmed based on the ITS spot information to which ID 32 is assigned, and based on the information type corresponding to the ID, the current location and the road that is running, and the confirmed surrounding restriction information. Thus, it is possible to estimate the contents of the ITS spot information as emergency message information to which ID20 or ID40 is assigned. In particular, it is possible to distinguish whether the content of the ITS spot information is wide-area or local.

  In addition, since the prepared contents provide a fixed message corresponding to the estimated contents of the ITS spot information, it is only necessary to prepare and output a fixed message in advance. A complicated configuration for outputting image information and audio information becomes unnecessary.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the content of the ITS spot information is estimated and a voice message and a text message that are fixed in advance are output, but the display device 52 can display graphics. May include a message including a symbol informing the estimation result instead of the text message or together with the text message.

  In the above-described embodiment, the voice message and the text message prepared in advance are created in “Japanese”. However, other languages such as English are created, and the message in any language is used for the user. You may make it select. Even in this case, the number of voice messages and text messages prepared in advance only increases, and there is no change in that it can be realized with a simple configuration.

  In the above-described embodiment, the present invention is applied to the audio apparatus 1. However, the present invention may be applied to other in-vehicle devices. For example, the present invention may be applied to a radio receiver or a television receiver.

  As described above, according to the present invention, image information and audio information are obtained by receiving information on safety and security and estimating the contents without using image information, character information, and audio information as distribution contents. A complicated configuration for output is not required, and it is possible to provide the user with a rough content of the safety / security information with a simple configuration.

DESCRIPTION OF SYMBOLS 1 Audio apparatus 2 DSRC onboard equipment 3 DSRC roadside device 10 Control part 11 Information acquisition part 12 Information content estimation part 13 Estimate content notification part 14 Present location / road identification part 15 Regulation information confirmation part 20 Interface part (IF)
30 Accident Information Storage Unit 40 Audio Processing Unit 50 Display Processing Unit 52 Display Device

Claims (12)

Information acquisition means for acquiring safety / safety information sent from a DSRC roadside device installed along a road via a DSRC onboard device;
Information content estimation means for estimating the content of the information without using image information, character information, and audio information as distribution content included in the information;
Estimated content notification means for notifying the content of the information estimated by the information content estimation means;
The safety and security information is assigned a different ID for each information type,
The information content estimating means, vehicle and wherein that you estimate the contents of the information based on the information type corresponding to the ID. In claim 1,
The information acquired by the information acquisition means includes a code indicating the details of the restriction that specifies the road closure and other traffic restrictions,
The in-vehicle apparatus characterized in that the information content estimation means estimates the content of the information based on the code. In claim 1 or 2,
The in-vehicle device, wherein the information is caution / warning information to which ID 37 or ID 53 is assigned. In claim 1,
Based on the information acquired by the information acquisition means, further comprising a current location / road identification means for identifying the current location of the vehicle and the road in traffic,
The in-vehicle apparatus characterized in that the information content estimation means estimates the content of the information based on the information type corresponding to the ID and the current location and road identified by the current location / road identification means. In claim 4,
Accident information storage means for storing accident information indicating whether or not there is an intersection as a frequent accident point in the vicinity of the DSRC roadside unit,
The information content estimation means is based on the information type corresponding to the ID, the current location and road identified by the current location / road identification means, and the accident information stored in the accident information storage means. An in-vehicle device characterized by estimating contents. In claim 5,
The information is sent from the DSRC roadside device at any timing when there is a traffic jam tail or low speed vehicle ahead, or when a merging vehicle is approaching at a merging point on the road. In-vehicle device. In claim 5 or 6,
The in-vehicle device, wherein the information is safe driving support information to which ID 36 or ID 52 is assigned. In claim 4,
Based on the information acquired by the information acquisition means, further comprising a regulation information confirmation means for confirming the surrounding regulation information,
The information content estimation means includes the information based on the information type corresponding to the ID, the current location and road identified by the current location / road identification means, and the surrounding restriction information confirmed by the restriction information confirmation means. An in-vehicle device characterized by estimating the contents of the vehicle. In claim 8,
The in-vehicle device, wherein the restriction information confirmation unit confirms surrounding restriction information based on information assigned with the ID 32 acquired by the information acquisition unit. In claim 8 or 10,
The information content estimation means determines whether a wide-area event or a local event has occurred based on the surrounding restriction information confirmed by the restriction information confirmation means, and based on the determination result A vehicle-mounted device characterized by estimating the content of the information. In any one of Claims 8-10,
The in-vehicle device, wherein the information is emergency message information to which ID20 or ID40 is assigned. In any one of Claims 1-11,
The in-vehicle apparatus, wherein the estimated content notification means provides a message whose content prepared in advance corresponds to the estimated content of the information.

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