TWI764761B - Driving safety system - Google Patents

Abstract

A driving safety system for controlling a vehicle includes a detector, a gateway unit and a battery management system. The detector is disposed on a steering wheel for detecting a hand of a driver, determining whether a dangerous situation has occurred accordingly, and sending detection data when the dangerous situation has occurred. The gateway unit is linked to the detector for receiving the detection data to generate a warning signal when the dangerous situation has occurred. The battery management system is linked to the gateway unit, and coupled to a battery for receiving the warning signal and generating a control signal accordingly to reduce output power of the battery to reduce the speed of the vehicle.

Description

driving safety system

The present invention relates to a driving safety system, especially a driving safety system that can sense the driver's hand and adjust the output power of the battery accordingly to adjust the vehicle speed.

The research and development of electric vehicles has become the current trend in the automotive field, and each electric vehicle has a processor inside to process and forward all the information inside and outside the vehicle. An ideal electric vehicle should have the function of autonomous driving, but the autonomous driving is not yet fully mature, so many car manufacturers provide the function of semi-autonomous driving for the driver to use. With semi-autonomous driving, the car can move automatically, but the driver must keep their hands on the steering wheel to manually intervene to operate the car if needed.

At present, many news reports can be seen that when semi-autonomous driving is used, the driver is sleeping, eating lunch, or doing other things, causing extremely high traffic risks, not only putting the driver himself in a dangerous state, but also endangering the lives of others Safety.

Embodiments provide a driving safety system for controlling a vehicle, including a sensor, a gateway unit, and a battery management system. The sensor is arranged on a steering wheel for sensing a hand of a driver, so as to judge whether a dangerous situation occurs, and send a sensing data when the dangerous situation occurs. The gateway unit is connected to the sensor for receiving the sensing data, so as to generate a warning signal when the dangerous situation occurs. The battery management system is connected to the gateway unit and coupled to a battery for receiving the warning signal and generating a control signal accordingly to reduce the output power of the battery to reduce the speed of the vehicle.

100: Driving Safety Systems

110: Sensor

115: Controller Area Network Bus

120: Gateway unit

130: Battery Management System

140: battery

150: Autonomous Driving System

155: Steering wheel

160: Communication unit

199: External Agencies

S1, S2, S3: Warning signal

Sc: control signal

Sd: Sensing data

Sw: message

FIG. 1 is a schematic diagram of the driving safety system in the embodiment.

FIG. 2 is a schematic diagram of a driving safety system in another embodiment.

FIG. 1 is a schematic diagram of a driving safety system 100 in an embodiment. The driving safety system 100 can be installed in a vehicle and used to control the vehicle. The driving safety system 100 may include a sensor 110 , a gateway unit 120 and a battery management system 130 .

The sensor 110 can be disposed on the steering wheel 155 for sensing the driver's hand, so as to determine whether a dangerous situation occurs, and when the dangerous situation occurs, send the sensing data Sd.

The gateway unit 120 can be connected to the sensor 110 through at least one of wired and wireless methods to receive the sensing data Sd. The gateway unit 120 can receive the sensing data Sd, so as to generate a first warning signal S1 according to the sensing data Sd when a dangerous situation occurs.

The battery management system 130 can be connected to the gateway unit 120 and coupled to the battery 140 through at least one of wired and wireless methods to receive the first warning signal S1 and generate the control signal Sc according to the first warning signal S1 to use the control signal Sc reduces the output power of the battery 140, thereby reducing the speed of the vehicle.

According to an embodiment, the sensor 110 may include at least one of a capacitive sensor, a resistive sensor, and a temperature sensor. According to an embodiment, the sensor 110 may include an electronic control unit (ECU) to determine whether a dangerous situation occurs according to the result of sensing the hand, and to perform wireless transmission, wired transmission, data storage, data calculation, Signal control and/or management of the transmission of signals.

According to an embodiment, the above-mentioned dangerous situation may include at least one of the following two situations: (1) The driver's hand is not placed on the steering wheel 155 , and (2) the hand is not placed in the correct area of the steering wheel 155 .

For example, if the driver relies too much on semi-autonomous driving and completely removes his hands from the steering wheel 155 , the sensor 110 may determine that this is a dangerous situation. For another example, if the driver's hand is placed on the steering wheel 155, but the placed area is an abnormal area, the sensor 110 can determine that this is a dangerous situation.

According to an embodiment, a threshold value of time may be set to determine a dangerous situation. For example, if the time for the driver's hand to leave the steering wheel 155 has reached a threshold value (eg, 5 seconds), or the time for the driver's hand to be placed in the abnormal area of the steering wheel 155 has reached the threshold value, the sensor 110 can determine Dangerous situation occurs.

According to an embodiment, the sensor 110 can determine whether a dangerous situation occurs according to the vehicle speed and the sensing data Sd. For example, the dangerous situation may include at least one of hands not placed on the steering wheel 155 , and hands not placed in the correct area of the steering wheel 155 , and the vehicle speed is higher than a preset value. For example, if the hand is not placed on at least one of the steering wheel 155 and the hand is not placed in the correct area of the steering wheel 155, and the vehicle speed is higher than 60 kilometers per hour, the sensor 110 can determine the dangerous situation occur.

According to the embodiment, when the vehicle speed is too high and the hand is not placed on the steering wheel 155 and at least one of the time when the hand is not placed on the correct area of the steering wheel 155 has reached the threshold value, the sensor 110 Determine that a dangerous situation has occurred.

FIG. 2 is a schematic diagram of a driving safety system 100 in another embodiment. As shown in FIG. 2 , the driving safety system 100 may further include an automatic driving unit 150 and a communication unit 160 . FIG. 2 is an example. According to an embodiment, the driving safety system 100 may include one or both of the automatic driving unit 150 and the communication unit 160 .

According to an embodiment, the gateway unit 120 is further configured to generate the second warning signal S2 when a dangerous situation occurs. As shown in FIG. 2 , the automatic driving unit 150 can be connected to the gateway unit 120 through at least one of wired and wireless methods to receive the second warning signal S2 and execute the automatic driving operation according to the second warning signal S2.

According to an embodiment, the automated driving operations described above may include re-routing the vehicle to a safe lane (eg such as outside lanes, road shoulders, etc.), and at least one of parking the vehicle on the side of the road. When the automatic driving operation is performed, the automatic driving unit 150 may take over the operation of the steering wheel 155 . According to embodiments, autonomous driving operations may include honking a horn and controlling vehicle lights, among others.

According to an embodiment, the gateway unit 120 may be further used to generate a third warning signal S3 when a dangerous situation occurs. As shown in FIG. 2 , the communication unit 160 can be connected to the gateway unit 120 through at least one of a wired method and a wireless method, and is used for receiving the third warning signal S3, so as to send a message Sw according to the third warning signal S3 to notify the outside Institution 199.

For example, the communication unit 160 can perform communication of Global Positioning System (GPS), fifth generation technology standard (5G) or Long Term Evolution (LTE) . For example, external agencies 199 may include police stations, fire stations, and roadside assistance units.

According to an embodiment, the gateway unit 120 may include a controller unit and a router. The controller unit may include, for example, a Micro Control Unit (MCU for short) for generating each of the warning signals S1 to S3 according to the sensing data Sd. A router can be used to plan and determine the path of data transmission in the network.

According to an embodiment, in FIGS. 1 and 2 , the gateway unit 120 may be connected to the sensor 110 through a controller area network bus (Controller Area Network Bus, CAN Bus for short) 115 . According to an embodiment, the gateway unit 120 may be a central gateway unit or a distributed gateway unit. According to an embodiment, the gateway unit 120 may be an automotive gateway unit.

The application of the driving safety system 100 is exemplified below in a contextual manner. For example, the steering wheel 155 may have a built-in sensor 110 capable of sensing hand temperature, and the sensor 110 may include an electronic control unit (ECU). The electronic control unit (ECU) of the sensor 110 can determine whether the driver's hands (both hands or at least one hand) are placed on the steering wheel 155 , or whether they are placed in the correct area of the steering wheel 155 . If the vehicle When the speed exceeds 60 kilometers per hour, and the driver's hands are placed in the correct area of the steering wheel 155 for less than the predetermined time, the electronic control unit (ECU) of the sensor 110 can determine that there is a dangerous situation, and can use the controller The local area network bus 115 transmits the sensing data Sd to the gateway unit 120 to control the vehicle to perform the following operations: (1) Control the battery management system 130 to limit the battery power output of the electric vehicle so that the battery will not have high power output ; (2) As the power output of the battery decreases, the vehicle can gradually reduce the speed to below 60 kilometers per hour, and divert the vehicle to the side of the road or on the shoulder of the road; (3) Control the vehicle and flash the emergency lights to make other passers-by improve. and (4) send a report to the relevant unit through the communication unit 160 to confirm the driving status of the vehicle with the owner. If the owner does not respond, the vehicle can be parked on the side of the road. The scenarios and numerical values described herein are only examples, and the embodiments are not limited thereto.

To sum up, the driving safety system 100 can sense the driver's hand, so as to control the vehicle and notify relevant units in real time according to the driver's condition and road conditions, so as to effectively ensure the road safety of the driver and other drivers. In one embodiment of the present invention, the driving safety system of the present invention can be applied to in-vehicle devices, such as self-driving cars, electric cars, or semi-self-driving cars.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

100: Driving Safety Systems

110: Sensor

115: Controller Area Network Bus

120: Gateway unit

130: Battery Management System

140: battery

155: Steering wheel

S1: Warning signal

Sd: Sensing data

Sc: control signal

Claims (6)

A driving safety system for controlling a vehicle, comprising: a sensor arranged on a steering wheel for sensing a hand of a driver to determine whether a dangerous situation occurs, and when the dangerous situation occurs sending a sensing data; a gateway unit connected to the sensor for receiving the sensing data, wherein the gateway unit includes a controller unit, the controller unit is used for generating a first data according to the sensing data a warning signal, a second warning signal and a third warning signal; a battery management system connected to the gateway unit and coupled to a battery for receiving the first warning signal and generating a control signal accordingly to reduce The output power of the battery is used to reduce a speed of the vehicle; an automatic driving unit is connected to the gateway unit for receiving the second warning signal and performing an automatic driving operation accordingly; and a communication unit connected to the The gateway unit is used for receiving the third warning signal and sending a message to notify an external organization accordingly; wherein, the sensor includes an electronic control unit, when the speed of the vehicle exceeds 60 kilometers per hour, and the driver If the hand is not placed in a correct area of the steering wheel for a predetermined time, the electronic control unit determines the dangerous situation. The driving safety system of claim 1, wherein the sensor comprises at least one of a capacitive sensor, a resistive sensor and a temperature sensor. The driving safety system of claim 1, wherein the automatic driving operation includes at least one of diverting the vehicle to a safe lane and parking the vehicle to the side of the road. The driving safety system of claim 1, wherein the gateway unit includes a router. The driving safety system of claim 1, wherein the gateway unit is connected to the sensor through a controller area network bus. The driving safety system according to claim 1, wherein the gateway unit is a central gateway unit or a distributed gateway unit.

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