JP2005234791A - Stopping vehicle information transmission system - Google Patents

Stopping vehicle information transmission system Download PDF

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Publication number
JP2005234791A
JP2005234791A JP2004041619A JP2004041619A JP2005234791A JP 2005234791 A JP2005234791 A JP 2005234791A JP 2004041619 A JP2004041619 A JP 2004041619A JP 2004041619 A JP2004041619 A JP 2004041619A JP 2005234791 A JP2005234791 A JP 2005234791A
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Prior art keywords
accident
vehicle
information
accident information
relay
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JP2004041619A
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Japanese (ja)
Inventor
Keiyu Kin
圭勇 金
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Honda Motor Co Ltd
本田技研工業株式会社
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Priority to JP2004041619A priority Critical patent/JP2005234791A/en
Publication of JP2005234791A publication Critical patent/JP2005234791A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a means surely transmitting stopping vehicle information transmitted from a vehicle stopping ahead on a road to a vehicle traveling behind on the road in real time. <P>SOLUTION: A vehicle affected by an accident transmits accident data showing contents of the accident to the nearest accident information relay device 4a. The accident information relay device 4a transmits the received accident data to an accident information relay device 4b behind as accident information. The accident information relay device 4b transmits the received accident information to an accident information relay device 4c behind. A traveling vehicle traveling on a lane receives the accident information from the accident information relay device 4c and displays it on a display device arranged inside the vehicle. The accident information relay device 4c calculates a distance between the accident information relay device 4 and itself 4c from a device ID of the accident information relay device 4a as a transmission source of the accident information, a device ID of its own, and a distance between the devices and can transmit the calculated distance to the traveling vehicle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a stopped vehicle information transmission system that is installed on a road and transmits stopped vehicle information transmitted by a vehicle that has stopped due to an accident or a failure to a traffic vehicle behind.

Conventionally, it has been considered to communicate information between vehicles. In order for drivers to communicate with each other between vehicles, one-on-one communication of information, road conditions in the direction of the future, traffic conditions such as traffic jams, traffic conditions and weather conditions, Information is transmitted and received in a relay manner between the front and rear vehicles. As an example, Patent Document 1 discloses the presence or absence of a front vehicle, a distance between vehicles, etc. acquired by a millimeter wave radar of the host vehicle via an antenna unit provided at the front and rear of the vehicle, or acquired by wireless communication from a preceding vehicle. A vehicle-to-vehicle communication system and a vehicle-to-vehicle communication method for transmitting and receiving the above information between vehicles are disclosed. According to this Patent Document 1, it is possible to provide detailed information between vehicles to a driver during a traffic jam, and to alleviate irritation during driving.
JP 2003-132492 A (paragraphs 0018 to 0028, FIGS. 1 and 2)

  However, when a large number of vehicles simultaneously transmit and receive accident information and the like, there is a problem that interference or the like often occurs. As a result, it may take time until transmission / reception ends normally, and there is a possibility that vehicle-to-vehicle communication cannot be performed promptly and reliably. In addition, there is a problem in that a stopped vehicle cannot create accident information or transmit a message to a vehicle behind it due to an accident or failure that is the cause of the stop. According to the above, accident information relating to a stopped vehicle cannot be transmitted to a vehicle passing behind the road.

  In view of the above problems, the present invention reliably transmits, in real time, stopped vehicle information transmitted by a vehicle stopped in front of a road to a vehicle passing behind the road under low-cost conditions. It is an object to provide means.

Of the present invention that solves the above problems, the invention according to claim 1 is an accident or accident caused by a vehicle on a road and a plurality of stopped vehicle information relay devices installed at predetermined intervals along the traveling direction of the vehicle on the road. A stop vehicle information transmission system for transmitting stop vehicle information, which is information related to a vehicle stopped due to a failure, to a vehicle behind the stop position of the vehicle, and when the vehicle stops due to an accident or failure, the stop vehicle Stop vehicle information transmitting means for creating information and wirelessly transmitting the created stopped vehicle information to the surroundings; Stop vehicle information receiving means for receiving stopped vehicle information wirelessly transmitted to the surroundings by the stopped vehicle information relay device; and Stop vehicle information A stop vehicle information relay device for receiving stop vehicle information wirelessly transmitted from the stop vehicle information transmission means, and a received stop The vehicle stop information transmission system has information transmission means for relaying both pieces of information to the rear stop vehicle information relay device and information transmission means for wirelessly transmitting the transmitted stop vehicle information to surrounding vehicles. The vehicle information relay device relays the stopped vehicle information wirelessly transmitted by the vehicle stopped due to an accident or failure, and transmits the information to the surrounding vehicles to notify the occupant.
The “stopped vehicle”, “stopped vehicle information” and “stopped vehicle information relay device” in the claims are respectively “accident vehicle”, “accident data, accident” in the best mode for carrying out the invention described later. It corresponds to “information” and “accident information relay device”.

  In the invention according to claim 2, at least one of the stopped vehicle information transmitting unit and the stopped vehicle information receiving unit uses a transmission / reception function of a tire pressure monitoring system in which a wheel is provided with an air pressure sensor unit that measures tire pressure of the vehicle. It is characterized by.

  According to the invention according to claim 1, the stop vehicle information relay device on the road side promptly transmits the stop vehicle information from the stopped vehicle to the stop vehicle information relay device at the rear, and the stop vehicle information relay device at the rear thereof. However, since the transmitted stop vehicle information is transmitted to the rear vehicle, the front stop vehicle information can be surely known in real time in the rear vehicle.

  According to the second aspect of the present invention, since the vehicle transmission / reception function of the tire pressure monitoring system is used in the vehicle to transmit / receive the stopped vehicle information to / from the road side, the vehicle transmission / reception device is realized at low cost. be able to. In addition, since there are multiple antennas on the tire pressure monitoring system on the vehicle body side, it is highly possible that at least one antenna can transmit stop vehicle information even when an accident occurs, and the attitude when the vehicle stops Signals can be transmitted almost in all directions regardless of the.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. This invention implement | achieves the system which transmits the stop vehicle information which the stopped vehicle transmits to a back vehicle. At this time, a transmission / reception function of a tire pressure sensor unit (hereinafter simply referred to as “air pressure sensor unit”) of TPMS (Tire Pressure Monitoring System) can be used. In the embodiment of the present invention, the “stopped vehicle”, “stopped vehicle information”, and “stopped vehicle information relay device” in the claims are referred to as “accident vehicle”, “accident data, accident information” and “ It will be described as “accident information relay device”.

<< Summary of Embodiment >>
First, an outline of an accident vehicle, an accident information relay device, and a passing vehicle according to an embodiment of the present invention will be described with reference to the image diagram of FIG. A plurality of accident information relay apparatuses 4 are installed at predetermined distance intervals in the center of each lane of the road. For example, if the distance interval is 20 m, in FIG. 1, the distance between the accident information relay apparatuses 4a and 4b and the distance between the accident information relay apparatuses 4b and 4c are 20 m. . Further, each accident information relay device 4 has a device ID which is a unique number sequentially assigned to each device. In FIG. 1, the device ID of the accident information relay device 4a is 200, the device ID of the accident information relay device 4b is 201, and the device ID of the accident information relay device 4c is 202. Here, the device ID is assigned to each accident information relay device 4 so as to be in ascending order in the direction (backward) opposite to the traveling direction of the vehicle in the road lane. Hereinafter, the traveling direction of the vehicle in the road lane is referred to as “front”, and the direction opposite to the traveling direction is referred to as “rear”. Note that the device IDs do not necessarily have to be assigned in ascending order backward, and may be in descending order.

Accident vehicles that have encountered an accident, for example, when the G sensor detects gravitational acceleration above a specified value or when an SRS (Supplemental Restraint System) is activated and within a few seconds to a few dozen seconds When the wheel speed sensor detects a vehicle speed = 0 or a value close to 0, it creates accident data indicating the details of the accident, such as “a collision has occurred”, and uses that accident data as the nearest accident information. Transmit to the relay device 4a. In general, when the G sensor detects a gravitational acceleration of a predetermined value or more, the driver is protected by deploying an airbag or the like. The accident information relay device 4a transmits the received accident data as accident information to the rear accident information relay device 4b. The accident information relay device 4b transmits the received accident information to the rear accident information relay device 4c. In addition, each accident information relay apparatus 4 shall be provided with the memory | storage means to memorize | store accident information. The passing vehicle passing through the lane receives the accident information from each accident information relay device 4, for example, 4c, and displays the received accident information on a display device provided in the vehicle. At this time, the accident information relay device 4c calculates the distance between the accident information relay device 4a and the own device 4c from the device ID of the accident information relay device 4a that is the source of the accident information and the device ID of the own device. The calculated distance can be stored in the storage means, and the distance can be transmitted to the traveling vehicle.
In FIG. 1, the accident data and the accident information are shown to be transmitted to each accident information relay device 4 installed in the front lane when viewed from the side of the page. It is assumed that accident data and accident information are also transmitted to the accident information relay device 4 installed in the far lane. The accident data and the accident information are transmitted wirelessly. However, transmission between the accident information relay apparatuses 4 may be performed by wire. Reliability can be improved by performing wired communication.

≪Vehicle configuration and overview≫
Next, with reference to FIG. 2, the structure and outline | summary of the vehicle which concerns on embodiment of this invention are demonstrated. FIG. 2 shows the vehicle 1 as viewed from above. Hereinafter, the four tires and the members arranged corresponding to them, that is, the air pressure sensor unit and the vehicle body side antenna are collectively referred to by numerals, and the individual members depend on their arrangement positions. , FR (front right), FL (front left), RR (back right), and RL (back left) are identified by adding alphabetical signs. Therefore, hereinafter, when collectively referring to, for example, “tire 2”, when indicating individual members, for example, “tire 2FR”. The same applies to the other members.
Four tires 2 are mounted on the vehicle 1. Each tire 2 is provided with an air pressure sensor unit 3 for measuring the air pressure in the tire 2. The air pressure sensor unit 3 wirelessly communicates with the vehicle body side antenna 14 disposed on the vehicle 1 from the side, and transmits accident data with the accident information relay device 4 (see FIG. 1) installed on the road. Or receive accident information.

An in-vehicle ECU (Electronic Control Unit) 11, an accident information display device 12, an accident data creation device 13, and four vehicle body side antennas 14 are disposed inside the vehicle 1. The accident information display device 12, the accident data creation device 13 and the four vehicle body side antennas 14 are connected to the in-vehicle ECU 11 by a predetermined wiring cable.
The vehicle-mounted ECU 11 relays various information between devices and antennas connected to itself. The accident information display device 12 is disposed on the instrument panel in front of the driver's seat, has a function of displaying accident information input via the vehicle body side antenna 14 and the in-vehicle ECU 11, and allows the driver to check the contents. Yes. The accident information display device 12 can be realized at a low cost by using a monitor of a navigation system or the like. In addition, you may make it notify the content of accident information to a driver with an audio | voice. The accident data creation device 13 is arranged at a predetermined location in the vehicle 1, and when the in-vehicle ECU 11 recognizes that the own vehicle has encountered an accident from the detection values of the G sensor and the wheel speed sensor, an accident indicating the content of the accident It has a function of creating data and transmitting the created accident data to the in-vehicle ECU 11. For example, when the G sensor detects a gravitational acceleration of a predetermined value or more and the wheel speed sensor detects a vehicle speed = 0, the accident data indicating the content of the accident such as “a collision accident has occurred” is created. . Moreover, it is not necessary to have accident data, and failure data of the vehicle 1 may be created based on an operation of a dedicated switch (not shown) by a driver. The vehicle body side antenna 14 wirelessly communicates with the air pressure sensor unit 3 disposed on the tire 2, transmits accident data to and receives accident information from the accident information relay device 4 installed on the road. Or
The air pressure sensor unit 3 or the vehicle body side antenna 14 transmits / receives information to / from the accident information relay device 4 installed on the road. However, since the distance between the air sensor unit 3 and the vehicle body side antenna 14 is short, it is possible to suppress radio waves to be weak and to save power. become. Moreover, since each vehicle 1 communicates with another accident information relay device 4 at a predetermined time, there is no interference and good information transmission / reception can be performed.
The “tire pressure monitoring system” in the claims corresponds to the air pressure sensor unit 3, the vehicle body side antenna 14, and the in-vehicle ECU 11. Further, the “stop vehicle information creation means”, “stop vehicle information transmission means, stop vehicle information reception means” and “stop vehicle information display means” in the claims are respectively “accident data creation device 13” and “vehicle mounted ECU 11”. And “accident information display device 12”.

≪Configuration and overview of pneumatic sensor unit≫
Next, the configuration and outline of the air pressure sensor unit will be described with reference to FIG. The air pressure sensor unit 3 includes a CPU (Central Processing Unit) 31 that performs predetermined processing while inputting / outputting data in a memory (not shown), a pressure sensor 32 that generates an output indicating tire air pressure, and an output indicating the temperature of the part. And a temperature sensor 33 for generating Outputs of the pressure sensor 32 and the temperature sensor 33 are converted into digital values via an A / D (Analog / Digital) conversion circuit (not shown) and input to the CPU 31.
The air pressure sensor unit 3 is provided with a power source (lithium battery, battery power source, etc.) 34 and functions as an operating power source for the CPU 31. In addition, a sensor-side antenna 35 is provided, and outputs of the pressure sensor 32 and the temperature sensor 33 are transmitted to the in-vehicle ECU 11 (see FIG. 2), and information transmitted from the in-vehicle ECU 11 is received. The CPU 31 performs, for example, 315 MHz PCM (Pulse Code Modulation) digital transmission via the sensor-side antenna 35.
Although illustration is omitted, a voltage sensor is provided at an appropriate position of the power supply circuit between the power supply 34 and the CPU 31 and outputs a signal corresponding to the output voltage of the power supply 34. The output of the voltage sensor is also A / D converted and input to the CPU 31.
The shape of the air pressure sensor unit 3 is shown in the upper right of FIG. Since the air pressure sensor unit 3 is attached to the wheel surface of a rim (not shown), the lower surface has an arcuate shape so as to be in close contact with the wheel surface. In addition, an air hole 37 directly connected to the tire valve 39 and a sensor hole 38 communicating with the sensor portions of the pressure sensor 32 and the temperature sensor 33 are formed in the upper part. On the other hand, the tire valve 39 is attached to the side surface of the air pressure sensor unit 3 so as to be inclined. When the air pressure sensor unit 3 is attached to the wheel surface of the rim, the tire valve 39 is passed through the valve hole of the rim, and then the lower surface of the air pressure sensor unit 3 is bonded to the wheel surface. Thereafter, the tire is mounted on the wheel.

Conventionally, the transmission data from the air pressure sensor unit 3 is, for example, a 56-bit signal (sensor ID is 32 bits, pressure sensor output, pressure sensor output, combined with sensor ID, pressure sensor output, temperature sensor output, and voltage sensor output in this order). The temperature sensor output and the voltage sensor output are each 8 bits). The sensor ID is individually attached to each one set (four) of tires 2 corresponding to the four pneumatic sensor units 3. That is, the sensor ID is separately assigned to each of the four tires 2 when the vehicle 1 is shipped from the factory, and further separately when the vehicle 1 is different. Therefore, one sensor ID specifies one tire in the target vehicle group.
In the embodiment of the present invention, the header portion of the transmission data from the air pressure sensor unit 3 is used for distinguishing conventional measurement data such as tire air pressure from accident information and a request message (details will be described later). Assume that an attribute ID is provided. As a result, the transmission / reception function of the air pressure sensor unit 3 can be used for accident information transmission / reception, and the cost of the accident information reception facility in the vehicle can be reduced. Details of the attribute ID for accident information transmission / reception will be described later.

≪Configuration and overview of accident information relay device≫
Then, with reference to FIG. 4, the structure and outline | summary of the accident information relay apparatus which concern on embodiment of this invention are demonstrated. The accident information relay device 4 includes an ECU 41, a road side antenna 42, and an accident information storage means 43. ECU41 is further comprised from the receiver 41a, the transmitter 41b, and the control means 41c. The receiver 41a is connected to the road side antenna 42 and the control means 41c, and has a function of passing information received via the road side antenna 42 to the control means 41c. The transmitter 41b is connected to the road side antenna 42 and the control means 41c, and has a function of transmitting information input from the control means 41c via the road side antenna 42. The control means 41c is connected to the receiver 41a, the transmitter 41b, and the accident information storage means 43, and fulfills the central function of the accident information relay device 4. That is, the information input from the receiver 41a is processed and the processed information is stored in the accident information storage means 43, or the information input from the accident information storage means 43 is processed and the processed information is transmitted to the transmitter. Or output to 41b. The control unit 41c is realized by the CPU executing a program stored in a predetermined memory.

The road side antenna 42 is an antenna that communicates with the accident vehicle, the other accident information relay device 4 and the passing vehicle. In FIG. 4, the road side antenna 42 is connected to the receiver 41a and the transmitter 41b and is shown as an integrated transmission / reception antenna, but may be divided into a transmission antenna and a reception antenna. The accident information storage means 43 is connected to the control means 41 c and has a function of storing accident data received from an accident vehicle and accident information obtained by processing accident information received from another accident information relay device 4. The accident information storage means 43 is realized by a nonvolatile storage device such as a flash memory or a hard disk device.
In the following, the accident information relay device is sometimes referred to as “device” for simplicity. That is, when “device” is written alone, it means an accident information relay device.

≪Attributes and overview of send / receive information≫
With reference to FIG. 5, the attribute of the information which the accident information relay apparatus based on embodiment of this invention transmits / receives is demonstrated. As shown in FIG. 5, the attributes of information to be transmitted and received include accident data (attribute ID = 1), accident information for the accident information relay device (attribute ID = 2), and a deletion message (attribute ID) from the accident information relay device. = 3), reception response message (attribute ID = 4), accident information for traffic vehicles (attribute ID = 5), request message (attribute ID = 6) and deletion message (attribute ID = 7) originated by the accident handler There are seven. Hereinafter, an outline of information on each attribute will be described (see FIGS. 1 and 2 as appropriate).

  The accident data is created by the accident data creation device 13 of the accident vehicle, transmitted by the in-vehicle ECU 11 via the vehicle body side antenna 14 or the air pressure sensor unit 3, and received by the accident information relay device 4, and the accident vehicle is encountered. It shows the contents of the accident. The contents of the accident data include the time, the position and lane of the accident vehicle, the situation of the accident or failure, and the like. Accident information for the accident information relay device, an erasure message from the accident information relay device, and a reception response message are transmitted and received between adjacent accident information relay devices 4 in the road lane (including other lanes and oncoming lanes in the same direction). As a common format, it has a transmission source device ID and a reception destination device ID. Of these pieces of information, the accident information for the accident information relay device relays accident data from the accident vehicle and the device ID (information transmission source device ID) of the device that has received the accident data. The erasure message issued from the accident information relay device relays the erasure message from the accident handler and the device ID (information source device ID) of the device that has received the erasure message. The reception response message indicates that the accident information relay device 4 that has received the accident information for the accident information relay device or the deletion message from the accident information relay device has received the information. This is a reply to 4.

Accident information for a passing vehicle is information transmitted by the accident information relay device 4 and received by the air pressure sensor unit 3 or the vehicle body side antenna 14 of the passing vehicle, and includes the accident data and the distance to the point where the accident occurred. It is a waste. The request message is information transmitted by the air pressure sensor unit 3 or the vehicle body side antenna 14 of the passing vehicle and received by the accident information relay device 4 and indicates that the passing vehicle requests transmission of the accident information. The deletion message originated by the accident handler is information that the accident handler sends and is received by the accident information relay device 4, and the accident data that the accident vehicle previously sent after the accident processing was completed became invalid. It is an instruction to delete accident information corresponding to the accident data. Here, the accident handlers are the police, fire department officials, road managers, etc. who perform post-processing of the vehicles that have encountered the accident and the surrounding area, and the accident has been processed and the road can pass normally. At this point, a deletion message is transmitted to the nearest accident information relay device 4 using a predetermined terminal.
Details of the format of each attribute information will be described later.

≪Accident information relay device and other operations≫
The accident information relay device and other operations according to the embodiment of the present invention will be described with reference to FIGS. 6 to 11 (refer to FIGS. 1, 2, and 4 as appropriate). 6 to 11 are flowcharts showing the operation of the accident information relay apparatus 4, and particularly show the operation of the control means 41c. The format of information handled in each step is shown on the right side of each figure.

  FIG. 6 is a flowchart showing the overall operation of the accident information relay apparatus. First, the control means 41c (see FIG. 4) checks whether information has been received from the outside (step S601). Specifically, it is confirmed whether or not the receiver 41a has received information from the accident vehicle, another accident information relay device 4, a passing vehicle, or the terminal of the accident processor via the road side antenna 42. If no information has been received (No in step S601), the check is repeated. If the information has been received (Yes in step S601), the receiving process is sorted according to the attribute of the received information (step S602). Specifically, the control unit 41c refers to the attribute ID in the header portion of the received information and executes a reception process corresponding to the attribute ID. That is, as shown in FIG. 6, corresponding to the attribute ID being 1, 2, 6, 7 or 3, respectively, the accident data reception process (step S603), the accident information reception process (step S604), the request A message reception process (step S605), a deletion message (from the accident handler) reception process (step S606) or a deletion message (from the accident information relay device) reception process (step S607) is executed. Hereinafter, each reception process will be described.

  First, the accident data reception process will be described with reference to FIG. The accident data transmitted from the accident vehicle includes an attribute ID (= 1) and accident data. First, the control means 41c (see FIG. 4) checks whether there is accident information whose information source device ID is its own device ID (step S701). Specifically, it is confirmed whether or not there is any accident information stored in the accident information storage means 43 whose information transmission source device ID is its own device ID. Here, it is assumed that the own apparatus ID is stored in advance in a predetermined memory (not shown) or the accident information storage means 43 in the control means 41c. If there is the accident information of the own apparatus ID (Yes in step S701), it indicates that the accident information related to the accident that has occurred first is still valid, so that the new accident information is not stored and the process is terminated. By adding the sequence number of the accident data received to the device ID, a plurality of accident data can be received simultaneously by the same device, and accident information corresponding to each can be stored and transmitted. If there is no accident information of the own apparatus ID (No in step S701), accident information obtained by processing the received accident data is stored in the accident information storage means 43 (step S702). As shown in FIG. 7, the stored accident information includes an information transmission source device ID, a distance, and accident data. The information transmission source device ID indicates the device ID of the accident information relay device that transmitted the accident information, in other words, the accident data relay device that received the original accident data from the accident vehicle. Accordingly, the own apparatus ID is set here. The distance indicates the distance from the information transmission source device to the device. Therefore, 0 m is set here. The accident data is accident data received from the accident vehicle (excluding the attribute ID).

  Next, accident information for the accident information relay device is created (step S703). The accident information includes an attribute ID (= 2), a transmission source device ID, a reception destination device ID, an information transmission source device ID, and accident data. The own device ID is set in the transmission source device ID. The device ID of the partner device that transmits the accident information is set in the receiving device ID. Specifically, a value obtained by adding 1 to the own apparatus ID is set. The information source ID of the previously stored accident information is set as the information source device ID. In the accident data, the accident data of the previously stored accident information is set. Subsequently, the created accident information is transmitted to the rear accident information relay device 4 (step S704). Specifically, the control means 41 c instructs the transmitter 41 b to transmit the created accident information, and the transmitter 41 b that has received the instruction transmits the accident information via the road side antenna 42. In the following, it is assumed that the same operation is performed when the control unit 41c transmits information. And the control means 41c checks whether the reception response message was received (step S705). Specifically, it is confirmed whether or not the receiver 41a has received a reception response message via the road-side antenna 42. If the reception response message has not been received (No in step S705), the check is repeated. If the reception response message has been received (Yes in step S705), it is confirmed that the counterpart device has received the accident information, and thus the process ends. Note that confirmation of reception of the reception response message can be omitted.

  Next, the accident information reception process will be described with reference to FIG. When accident information is received from the accident information relay device 4 ahead, the control means 41c (see FIG. 4) first creates a reception response message (step S801). As shown in FIG. 8, the reception response message includes an attribute ID (= 4), a transmission source device ID, and a reception source device ID. The own device ID is set in the transmission source device ID. The transmission destination apparatus ID of the received accident information is set as the reception destination apparatus ID. Then, the created reception response message is transmitted to the accident information relay device 4 ahead (step S802). The operation in step S802 corresponds to step S705 in FIG. Note that the creation and transmission of the reception response message can be omitted. Next, the control means 41c calculates the distance L between the own device and the information transmission source device (step S803). The distance L is calculated by the following formula 1.

  Distance L = (Own device ID−Information source device ID) × Distance between adjacent devices

Formula 1 will be described assuming that the distance L is calculated in the accident information relay device 4c of FIG. As the own device ID, 202 which is the device ID of the accident information relay device 4c is used. The information source device ID is the information source ID of the received accident information, and here, 200, which is the device ID of the accident information relay device 4a that has received the accident data from the accident vehicle, is used. Assuming that the distance between adjacent devices is 20 m, according to Equation 1, the distance L can be calculated as (202−200) × 20 = 40 [m]. This distance of “40 m” is merely an example shown for the convenience of the drawing, and the presence of an accident vehicle is confirmed even in a traffic vehicle several hundred meters to several kilometers behind the accident site by information transmission between the accident information relay devices 4. I can know.
It is assumed that the distance between adjacent devices is stored in advance in a predetermined memory (not shown) or the accident information storage unit 43 in the control unit 41c. The distance can be calculated by transmitting the information transmission source device ID from the device to the vehicle and based on the position information of the information transmission source device ID in the vehicle, thereby reducing the burden on the device side. .

  Subsequently, the control unit 41c stores the accident information in the accident information storage unit 43 (step S804). The format of the accident information to be stored is the same as that stored in step S702 in FIG. The information source device ID of the received accident information is set in the information source device ID. For the distance, the distance L calculated by Equation 1 in step S803 is set. The accident data of the received accident information is set in the accident data. Next, the distance L between the own apparatus and the information transmission source apparatus and a predetermined value are compared (step S805). This predetermined value is a reference value for deciding whether or not to transmit accident information to the rear accident information relay device 4. For example, in the case of an expressway, it is set to 2 to 4 km to notify the occurrence of an accident early. If it is a general road, it is set to 0.5 to 1 km in consideration of detouring avoiding traffic jams due to accidents. This predetermined value is stored in advance in a predetermined memory (not shown) in the control means 41c or the accident information storage means 43. If the distance L is greater than the predetermined value as a result of the comparison in step S805 (No in step S805), it is not necessary to relay the accident information any more, and the process is terminated. If the distance L is equal to or smaller than the predetermined value (Yes in step S805), accident information to be transmitted to the rear accident information relay device 4 is created (step S806). The format and setting contents of the accident information to be created are the same as those created in step S703 in FIG. Then, the created accident information is transmitted to the rear accident information relay device 4 (step S807). Further, it is checked whether or not a reception response message has been received (step S808). This process is the same as step S705 of FIG. The operation in step S808 corresponds to step S802 in the rear accident information relay device 4. Note that the reception check of the reception response message can be omitted.

  Next, the request message reception process will be described with reference to FIG. The request message transmitted from the passing vehicle includes an attribute ID (= 6). When this request message is received, the control means 41c (see FIG. 4) creates accident information for a passing vehicle (step S901). Accident information for a passing vehicle includes an attribute ID (= 5), a distance, and accident data. In the distance and accident data, the distance and accident data of the accident information stored in the accident information storage means 43 are set. When a plurality of pieces of accident information are stored, the accident information having the shortest distance is set. As a result, among the stored accident information, the accident information at a point closest to the accident information relay device 4 can be transmitted to the traveling vehicle. Then, the created accident information is transmitted to the passing vehicle (step S902). The accident information relay device 4 may continue to transmit the accident information to the passing vehicle without receiving a request message from the passing vehicle. At this time, the passing vehicle can receive the accident information without transmitting a request message.

  Furthermore, with reference to FIG. 10, the deletion message (from the accident handler) reception process will be described. The deletion message from the accident handler is composed of attribute ID (= 7). When this deletion message is received, first, the control means 41c (see FIG. 4) deletes the accident information whose information transmission source apparatus ID is its own apparatus ID from among the accident information stored in the accident information storage means 43. (Step S1001). This is to delete accident information corresponding to the accident data because the accident data previously received from the accident vehicle has become invalid due to the completion of the accident processing. Next, an erasure message originated from the accident information relay device is created (step S1002). This erasure message includes an attribute ID (= 3), a transmission source device ID, a reception destination device ID, and an information transmission source device ID. The own device ID is set in the transmission source device ID and the information transmission source device ID. A value obtained by adding 1 to the own device ID is set in the receiving device ID. Then, the created erasure message is transmitted to the rear accident information relay device 4 (step S1003). Further, it is checked whether or not a reception response message has been received (step S1004). This process is the same as step S705 of FIG. Note that the reception check of the reception response message can be omitted.

Next, the erasure message (accident information relay device originating) reception process will be described with reference to FIG. When the erasure message is received from the forward accident information relay device 4, first, the control means 41c (see FIG. 4) creates a reception response message (step S1101), and uses the created reception response message as the forward accident information. It transmits to the relay apparatus 4 (step S1102). The operation in step S1102 corresponds to step S1004 in FIG. Note that the processing in steps S1101 and S1102 is the same as that in steps S801 and S802 in FIG. Note that the creation and transmission of the reception response message can be omitted. Next, of the accident information stored in the accident information storage means 43, the accident information having the information source device ID of the received deletion message is deleted (step S1103). As a result, invalid accident information is not transmitted to the traveling vehicle.
Then, the control means 41c (see FIG. 4) compares the distance L and a predetermined value between the own device and the information transmission source device (step S1104). The processing in step S1104 is the same as that in step S805 in FIG. It is assumed that the distance L is calculated by the above equation 1, and the predetermined value is stored in advance in a predetermined memory (not shown) in the control unit 41c or the accident information storage unit 43. If the distance L is equal to or smaller than the predetermined value as a result of the comparison in step S1104 (Yes in step S1104), an erasure message originating from the accident information relay apparatus is created (step S1105). The format of this erasure message is the same as that created in step S1002 of FIG. The own device ID is set in the transmission source device ID. A value obtained by adding 1 to the own device ID is set in the receiving device ID. The information source device ID of the received deletion message is set in the information source device ID. Subsequently, the created deletion message is transmitted to the rear accident information relay device 4 (step S1106). Then, it is checked whether or not a reception response message has been received (step S1107). This process is the same as step S705 of FIG. The operation in step S1107 corresponds to step S1102 in the rear accident information relay apparatus 4. Also, the reception check of the reception response message can be omitted.

≪Traffic vehicle movement≫
With reference to FIG. 1, FIG. 2, and FIG. 3, the accident information display in the passing vehicle according to the embodiment of the present invention will be described. As described with reference to FIG. 9, the accident information relay device 4 receives a request message from the passing vehicle, and transmits the accident information to the passing vehicle as a response to the received message. Correspondingly, in the passing vehicle, the in-vehicle ECU 11 transmits a request message at every predetermined time (always in macro) and receives accident information as a response. The request message is transmitted to the road accident information relay device 4 via the front air pressure sensor units 3FR and 3FL or the front body side antennas 14FR and 14FL. On the other hand, accident information is received from the road accident information relay device 4 via the rear air pressure sensor units 3RR and 3RL or the rear body side antennas 14RR and 14RL. When a passing vehicle passes over the accident information relay device 4, it is appropriate as a transmission / reception timing to transmit a request message via the front antenna and receive the accident information via the rear antenna. It depends.
Then, the in-vehicle ECU 11 outputs the distance and the accident data excluding the attribute ID among the received accident information to the accident information display device 12. The accident information display device 12 displays the distance and accident data input from the in-vehicle ECU 11 so that the driver can refer to them. For example, “500 m ahead: there is a collision vehicle” is displayed. This display disappears before the passing vehicle passes the next accident information relay device 4 at the latest. Since the passing vehicle is moving, for example, it is approaching momentarily at a point in front of where the vehicle accident occurred, and the distance of “500 m” immediately becomes meaningless information. In order to compensate for this, accident information is received from the next accident information relay device 4 and displayed, for example, “480m ahead: there is a collision vehicle”. In other words, as long as the passing vehicle is moving, the accident information received from the accident information relay device 4 is immediately obsolete, and the passing vehicle passes from the accident information relay device 4 that passes along with the movement. Receive and display new accident information.

  The accident information transmission operation described above can be realized mainly by a program developed in the in-vehicle ECU 11 of the vehicle 1 and the internal memory (not shown) of the control means 41c of the accident information relay device 4, and the program Can be recorded on a recording medium such as a CD-ROM.

<< Other embodiments >>
An example of the preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. For example, the following embodiments can be considered.
(1) Although the accident information relay device 4 is described as being installed on the road surface in the embodiment, it may be installed beside the road as shown in FIG. At this time, the transmitter 41b of the accident information relay device 4 transmits the accident information via the road side antenna 42 that emits radio waves from the side to the air pressure sensor unit 3 or the vehicle body side antenna 14 of the passing vehicle. To do. According to this, it is possible to reliably transmit and receive accident information. At this time, the vehicle body side antenna 14 may be incorporated in a door mirror or door handle of the vehicle. According to this, since the accident information relay device 4 installed on the side of the road and the vehicle body side antenna 14 incorporated in the door mirror or door handle of the vehicle communicate, it is possible to more reliably transmit and receive accident information. it can.
(2) In the accident information relay device 4, the time when the accident occurred may be included in the accident information. According to this, since the driver of the passing vehicle can refer to the time when the accident occurred in addition to the distance and the accident data, it is possible to more appropriately take action against the accident.
Further, when an accident occurs at an intermediate point between adjacent accident information relay devices 4 in the same lane, the two accident information relay devices 4 receive the same accident data from the accident vehicle. Of the two adjacent accident information relay devices 4, for example, when the rear accident information relay device 4b receives accident information from the front accident information relay device 4a, the information source device ID and the own device ID When the difference is 1 (that is, the accident information relay device 4a ahead is the information source) and the accident information with the same time and accident data is stored, the received accident information and the stored accident Recognize that the information was transmitted from the same accident vehicle, and discard the received accident information. According to this, it is possible to prevent the transmission of overlapping accident information between the accident information relay devices 4.
(3) The accident information relay device 4 may transmit the accident information stored in the accident information storage means 43 to a VICS (Vehicle Information and Communication System). According to this, the accident information relay device 4 can be one of the information sources of VICS.
(4) In the above-described embodiment, the accident vehicle is described as the information transmission source, but a passing vehicle may be the information transmission source. At this time, the information transmission source vehicle transmits predetermined information to the accident information relay device 4. And the accident information relay apparatus 4 receives predetermined information, and transmits the received predetermined information to the following vehicle. According to this, information transmission from a front vehicle to a back vehicle can be performed.
(5) You may make it transmit accident information not only to the apparatus of the back of the lane but to all the apparatuses of the lane of the same direction, and also to all the apparatuses of an opposite lane. Moreover, you may make it include lane ID which is a number peculiar to a lane in accident information. According to this, it is possible to distinguish between a faulty vehicle stopped on the road shoulder and an accident vehicle stopped on the traveling lane.

It is an image figure which shows the outline of the accident vehicle, accident information relay apparatus, and passing vehicle which concern on embodiment of this invention. It is a figure which shows the structure of the vehicle which concerns on embodiment of this invention. It is a figure which shows the structure of the air pressure sensor unit which concerns on embodiment of this invention. It is a figure which shows the structure of the accident information relay apparatus which concerns on embodiment of this invention. It is a figure which shows the attribute of the information which the accident information relay apparatus which concerns on embodiment of this invention transmits / receives. It is a flowchart which shows the whole operation | movement of the accident information relay apparatus which concerns on embodiment of this invention. It is a flowchart which shows the accident data reception process of the accident information relay apparatus which concerns on embodiment of this invention. It is a flowchart which shows the accident information reception process of the accident information relay apparatus which concerns on embodiment of this invention. It is a flowchart which shows the request message reception process of the accident information relay apparatus which concerns on embodiment of this invention. It is a flowchart which shows the deletion message (from accident handler) reception processing of the accident information relay apparatus which concerns on embodiment of this invention. It is a flowchart which shows the deletion message (accident information relay apparatus origin) reception process of the accident information relay apparatus which concerns on embodiment of this invention. It is an image figure which shows the outline of the accident vehicle which concerns on other embodiment, an accident information relay apparatus, and a traffic vehicle.

Explanation of symbols

1 Vehicle 2 Tire 3 Air Pressure Sensor Unit 4 Accident Information Relay Device (Stopped Vehicle Information Relay Device)
11 On-vehicle ECU (stop vehicle information transmission means, stop vehicle information reception means)
12 Accident information display device (notification means)
13 Accident data creation device 14 Car body side antenna 41 ECU
41a Receiver (information receiving means)
41b Transmitter (information transmitting means, information transmitting means)
41c Control means 42 Road side antenna 43 Accident information storage means

Claims (2)

  1. Stopped vehicle information, which is information related to a vehicle that has stopped due to an accident or failure, is stopped by a vehicle on the road and a plurality of stopped vehicle information relay devices installed at predetermined intervals along the traveling direction of the vehicle on the road. A stop vehicle information transmission system for transmitting to a vehicle behind the position,
    The vehicle is
    When stopped due to an accident or failure, the stopped vehicle information is created, and the stopped vehicle information transmitting means for wirelessly transmitting the generated stopped vehicle information to the surroundings, and the stopped vehicle information wirelessly transmitted to the surroundings by the stopped vehicle information relay device Stop vehicle information receiving means, and notification means for notifying the occupant of the stopped vehicle information,
    The stop vehicle information relay device is
    Information receiving means for receiving the stopped vehicle information wirelessly transmitted from the stopped vehicle information transmitting means, information transmitting means for relaying the received stopped vehicle information to a stopped vehicle information relay device behind, and the transmitted stop Information transmission means for transmitting vehicle information to surrounding vehicles by wireless transmission,
    The vehicle stop information transmission system relays the stop vehicle information wirelessly transmitted by the vehicle stopped due to an accident or failure via the stop vehicle information relay device, and transmits it to surrounding vehicles to notify the occupant. Configured
    Stop vehicle information transmission system characterized by.
  2. At least one of the stopped vehicle information transmitting means and the stopped vehicle information receiving means is:
    Using a transmission / reception function of a tire pressure monitoring system provided on a wheel with a pressure sensor unit for measuring tire pressure of the vehicle;
    The stopped vehicle information transmission system according to claim 1.
JP2004041619A 2004-02-18 2004-02-18 Stopping vehicle information transmission system Pending JP2005234791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004041619A JP2005234791A (en) 2004-02-18 2004-02-18 Stopping vehicle information transmission system

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Publication Number Publication Date
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Country Link
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008294740A (en) * 2007-05-24 2008-12-04 Denso Corp Roadside machine for vehicle communication system
JP2009020661A (en) * 2007-07-11 2009-01-29 Mitsubishi Electric Corp Information provision decision device and in-vehicle device
KR100895711B1 (en) 2007-09-22 2009-04-30 전자부품연구원 Apparatus, system and method for propagating the traffic emergency using sensor network
KR100895710B1 (en) * 2007-09-22 2009-04-30 전자부품연구원 Apparatus, system and methdod for showing the traffic emergency using sensor network
KR101048650B1 (en) 2009-04-21 2011-07-12 (주)에스디시스템 Traffic Information System with Traffic Accident Information Display
JP2012185668A (en) * 2011-03-04 2012-09-27 Sumitomo Electric Ind Ltd Information providing device, method and system
JP2013037579A (en) * 2011-08-09 2013-02-21 Sumitomo Electric Ind Ltd Information provision system, information provision device, and information provision method
JP2016181309A (en) * 2016-07-22 2016-10-13 セフテック株式会社 Congestion alarm device and congestion alarm system
JP2016197415A (en) * 2011-08-31 2016-11-24 ケーエムダブリュ・インコーポレーテッド Street lamp for providing safe driving information, and system for providing safe driving information using street lamp

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008294740A (en) * 2007-05-24 2008-12-04 Denso Corp Roadside machine for vehicle communication system
JP2009020661A (en) * 2007-07-11 2009-01-29 Mitsubishi Electric Corp Information provision decision device and in-vehicle device
KR100895711B1 (en) 2007-09-22 2009-04-30 전자부품연구원 Apparatus, system and method for propagating the traffic emergency using sensor network
KR100895710B1 (en) * 2007-09-22 2009-04-30 전자부품연구원 Apparatus, system and methdod for showing the traffic emergency using sensor network
KR101048650B1 (en) 2009-04-21 2011-07-12 (주)에스디시스템 Traffic Information System with Traffic Accident Information Display
JP2012185668A (en) * 2011-03-04 2012-09-27 Sumitomo Electric Ind Ltd Information providing device, method and system
JP2013037579A (en) * 2011-08-09 2013-02-21 Sumitomo Electric Ind Ltd Information provision system, information provision device, and information provision method
JP2016197415A (en) * 2011-08-31 2016-11-24 ケーエムダブリュ・インコーポレーテッド Street lamp for providing safe driving information, and system for providing safe driving information using street lamp
JP2016181309A (en) * 2016-07-22 2016-10-13 セフテック株式会社 Congestion alarm device and congestion alarm system

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