JP2012212445A - On-vehicle device, traffic information system, on-vehicle information processing method of on-vehicle device and on-vehicle information processing program of on-vehicle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide traffic information to respective vehicles so that the respective vehicles perform desired operation to prevent a traffic accident.SOLUTION: A host device 700 generates traffic information associated with all lanes. An information provision determination device 400 transmits the traffic information by using an electric wave widely propagating from a DSRC road side machine for information provision 300. A vehicle 101 receives the traffic information. Also, a light sensor 200 transmits lane information by using a light wave only narrowly propagating, and the vehicle 101 receives the lane information. Then, the vehicle 101 extracts traffic information on the traffic lane shown by the lane information and performs output control of a warning message of a car navigation system on the vehicle so as to prompt a driver to perform speed reduction or lane change. Moreover, an evaluation device 800 collects and evaluates traffic log data of the vehicle 101 through a DSRC road side machine for log collection 500, and controls information provision from the information provision determination device 400.

Description

  The present invention relates to, for example, an in-vehicle device, a traffic information system, an in-vehicle information processing method for an in-vehicle device, and an in-vehicle information processing program for the in-vehicle device.

The following have been proposed for traffic monitoring and control systems.
In order to prevent accidents such as encounter collisions at intersections where line-of-sight communication is difficult, a road-to-vehicle communication device at an intersection has been proposed (Patent Document 1).
In addition, a traffic monitoring and control system that performs simulation using a vehicle traveling model and optimizes signal timing has been proposed (Patent Document 2).

JP 2000-339591 A JP-A-9-128677 JP 2006-134158 A JP 2001-184595 A JP 2001-28097 A JP 2005-135015 A JP 2001-307291 A JP 2005-141543 A JP 2002-42288 A Japanese Patent Laid-Open No. 2004-280320

  An object of the present invention is to enable traffic information to be provided to each vehicle so as to cause each vehicle to perform a desired operation for preventing a traffic accident, for example.

The in-vehicle device according to the present invention is
An in-vehicle device mounted on a vehicle,
A traffic information radio wave reception unit that receives traffic information of multiple lanes by radio waves,
A lane information light wave receiving unit for receiving a light wave including information indicating the position of the lane and the vehicle from an optical path side device installed in the lane in which the vehicle travels;
Based on traffic information of a plurality of lanes received by the traffic information radio wave reception unit, a vehicle control unit that performs output control of a warning message of a car navigation system of the vehicle,
A travel log that records the timing of providing a warning message of the car navigation system by the vehicle control unit and positioning information of the vehicle as a travel log data in a storage device with the reception of the light wave by the lane information light wave receiving unit as a trigger A recording section;
And a travel log radio wave transmission unit that transmits the travel log data recorded by the travel log recording unit by radio waves.

  The present invention controls the traffic information by causing the evaluation device to control the traffic information providing process based on the travel log data of each vehicle, for example, to cause each vehicle to perform a desired operation for preventing a traffic accident. It can be provided for each vehicle.

1 is a schematic diagram of an electronic intersection system 900 according to Embodiment 1. FIG. FIG. 3 is a diagram illustrating an example of hardware resources of the electronic intersection system 900 according to the first embodiment. 2 is a functional configuration diagram of an electronic intersection system 900 according to Embodiment 1. FIG. FIG. 3 is a functional configuration diagram of an evaluation apparatus 800 according to Embodiment 1. FIG. 2 is a functional configuration diagram of in-vehicle device 110 mounted on vehicle 100 in the first embodiment. 5 is a flowchart showing traffic information processing of the electronic intersection system 900 according to the first embodiment. The figure which shows the communication protocol structure in DSRC. 5 is a flowchart showing an evaluation determination process of the evaluation apparatus 800 in the first embodiment. 3 is a graph showing a vehicle operation amount based on travel log data in the first embodiment.

Embodiment 1 FIG.
The electronic intersection system 900 according to the first embodiment provides the vehicle with danger information at the intersection, signal color information of the traffic light, information on the vehicle ignoring the signal, information on the vehicle approaching from the secondary road, and the like. One of the purposes is to increase the safety of vehicles such as roads and pedestrians. The vehicle determines the exact position in the intersection of the vehicle by spot communication using light waves, and the vehicle is on the secondary road based on the position of the vehicle in the intersection and information provided by DSRC (Dedicated Short Range Communication) communication. Warn the driver that it exists.
And the electronic intersection system 900 confirms whether the information provided to the vehicle was really effective information.
In order to confirm the effectiveness of information provision, a method is conceivable in which the entire intersection is photographed with a video camera, the behavior of the vehicle at the time of information provision is recorded, and a person judges and confirms based on the recorded image. However, in this method, it is difficult to confirm whether the vehicle has performed the risk avoidance operation by receiving the provided information, or whether the vehicle has voluntarily avoided the risk, and it is necessary to perform the analysis work manually. However, there is a problem that it takes time and effort even though it is a typical observation. In addition, this method provides a quantitative measure of whether the warning content for the vehicle is appropriate or the timing for providing information on the danger warning is appropriate in response to dangers in intersections such as vehicle jumps off secondary roads and right-hand vehicles. There is also a problem that it cannot be judged.
Hereinafter, an electronic intersection system 900 that solves these problems will be described.

FIG. 1 is a schematic diagram of an electronic intersection system 900 according to the first embodiment.
The outline | summary of the electronic intersection system 900 (traffic information system) in Embodiment 1 is demonstrated below based on FIG.

  The electronic intersection system 900 according to the first embodiment includes traffic information such as traffic jam information, construction information, accident information, danger information at intersections, traffic light color information, information on vehicles neglecting signals, and information on vehicles approaching from secondary roads. One of the purposes is to guide each vehicle so as not to cause a traffic accident. Therefore, the electronic intersection system 900 according to the first embodiment evaluates whether or not each vehicle can perform a desired operation for preventing a traffic accident by providing traffic information, and reflects the evaluation result to provide a traffic information providing function. Improve traffic accident prevention effect by improving

  For example, as shown in FIG. 1, when the vehicle 102 and the vehicle 103 are waiting for a right turn at an intersection, the electronic intersection system 900 determines that the vehicle 101 is waiting for a right turn at a front intersection. By providing a warning message such as “Warning!” To the vehicle 101, the vehicle 101 is guided to another lane and the vehicle 101 is prevented from colliding with the vehicle 103.

The electronic intersection system 900 transmits the traffic information related to all lanes generated by the host device 700 and the information provision determination device 400 that generates traffic information to be provided and the host device 700 and the information provision determination device 400 by radio waves that propagate in a wide area. DSRC roadside machine 300 for providing information, and a light detector 200 that transmits information on the installed lane by a light wave that is installed in each lane of the road and propagates in a narrow area.
The in-vehicle device mounted on each vehicle receives lane information indicating the lane in which the light sensor 200 is installed from the light sensor 200 installed in the traveling lane of the own vehicle, and the light sensor 200 The installed lane is determined to be the lane in which the vehicle is traveling.
The in-vehicle device of each vehicle receives traffic information related to all lanes from the DSRC roadside machine 300 for providing information, and extracts traffic information of the lane in which the vehicle is traveling from the received traffic information related to all lanes. If the extracted traffic information includes a warning message such as “Careful to vehicles waiting for a right turn at the front intersection!”, The in-vehicle device outputs a warning message to the driver by using a car navigation system, for example. Raise the danger.

Further, the electronic intersection system 900 is a log collecting DSRC roadside device 500 that receives travel log data indicating the operation information of the vehicle such as the travel locus, travel speed, accelerator opening, and steering amount recorded by the in-vehicle device from each vehicle. And an evaluation device 800 that performs an evaluation determination on the provision of traffic information based on the travel log data received by the log collecting DSRC roadside device 500.
Based on the travel log data of each vehicle, for example, the evaluation device 800 performs evaluation determination on the timing of providing traffic information and the content of a warning message.
Then, the host device 700 and the information provision determination device 400 evaluate the traffic information generated based on the vehicle information sensed by the ultrasonic sensor 600 and the image sensor 610, the signal control information of the signal controller 620, and the like. Based on the 800 evaluation results, the provision of traffic information is improved by changing the provision timing of traffic information and the content of a warning message included in the traffic information.

FIG. 2 is a diagram illustrating an example of hardware resources of the electronic intersection system 900 according to the first embodiment.
In FIG. 2, the in-vehicle device 110, the optical sensor 200, the information providing DSRC roadside device 300, the information providing determination device 400, the log collecting DSRC roadside device 500, the ultrasonic sensor 600, the image sensor 610, and the signal controller 620. The host device 700 and the evaluation device 800 include a CPU 911 (also referred to as a central processing unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a processor) that executes a program. The CPU 911 is connected to the ROM 913, the RAM 914, the communication board 915, the magnetic disk device 920, and the like via the bus 912, and controls these hardware devices. Instead of the magnetic disk device 920, a storage device such as an optical disk device or a memory card read / write device may be used.
The RAM 914 is an example of a volatile memory. The storage medium of the ROM 913 and the magnetic disk device 920 is an example of a nonvolatile memory. These are examples of a storage device, a storage device, or a storage unit.
The communication board 915 and each storage device are examples of input / output devices, input / output devices, or input / output units.

The communication board 915 is connected to a DSRC communication network, a LAN (local area network), the Internet, a WAN (wide area network), or the like by wire or radio such as radio waves or light waves.
The magnetic disk device 920 stores an OS 921 (operating system), a program group 923, and a file group 924. The programs in the program group 923 are executed by the CPU 911 and the OS 921.

The program group 923 stores a program for executing a function described as “˜unit” in the embodiment. The program is read and executed by the CPU 911.
In the file group 924, in the embodiment, result data such as “determination result”, “calculation result of”, “processing result of” when executing the function of “to part”, “to part” The data to be passed between programs that execute the function “,” other information, data, signal values, variable values, and parameters are stored as items “˜file” and “˜database”. The “˜file” and “˜database” are stored in a recording medium such as a disk or a memory. Traffic information and travel log data are examples of data stored in the file group 924. Information, data, signal values, variable values, and parameters stored in a storage medium such as a disk or memory are read out to the main memory or cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. Used for CPU operations such as calculation, processing, output, printing, and display. Information, data, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during the CPU operations of extraction, search, reference, comparison, operation, calculation, processing, output, printing, and display. Is remembered.
In addition, arrows in the flowcharts described in the embodiments mainly indicate input / output of data and signals, and the data and signal values are the memory of the RAM 914, the flexible disk, the compact disk, the magnetic disk of the magnetic disk device 920, and other optical disks. , And recorded on a recording medium such as a mini-disc or DVD (Digital Versatile Disc). Data and signal values are transmitted online via a transmission medium such as a bus 912, a signal line, a cable, a radio wave, and a light wave.

  In addition, what is described as “˜unit” in the embodiment may be “˜circuit”, “˜device”, “˜device”, “˜means”, and “˜step”, “˜”. “Procedure” and “˜Process” may be used. That is, what is described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, it may be implemented only by software, or only by hardware such as elements, devices, substrates, and wirings, by a combination of software and hardware, or by a combination of firmware. Firmware and software are stored as programs in a recording medium such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD. The program is read by the CPU 911 and executed by the CPU 911. That is, the evaluation program of the evaluation device 800 and the in-vehicle information processing program of the in-vehicle device 110 cause the computer to function as “˜unit”. Alternatively, the procedure or method of “to part” is executed by a computer.

FIG. 3 is a functional configuration diagram of the electronic intersection system 900 according to the first embodiment.
The functional configuration of the electronic intersection system 900 according to Embodiment 1 will be described below with reference to FIG.

The light sensor 200 (light path side machine) includes a light sensor control unit 210, a light sensor head 220, and a light sensor storage device 290, and is installed for each lane of each road, and passes through the lane in which it is installed. It communicates with the in-vehicle device 110 (described later with reference to FIG. 5) of each vehicle by light waves to notify each vehicle of the lane. In addition, the optical sensor 200 notifies each vehicle of the narrow area traffic information generated by the information provision determination device 400 and the host device 700 using light waves.
The information providing DSRC roadside device 300 (traffic information transmission radio roadside device) includes an information providing DSRC control unit 310, an information providing DSRC radio 320, and an information providing DSRC storage device 390. Each vehicle is notified of wide-area traffic information related to all lanes generated by the information provision determination device 400 and the host device 700 by communicating with the in-vehicle device 110 by radio waves.
The information provision determination device 400 (traffic information provision device) includes an information provision control unit 410, an I / F unit A420, an I / F unit B430, and an information provision storage device 490, and provides traffic information (narrow area traffic) to each vehicle. Information, wide area traffic information) is generated together with the host device 700 using the CPU. And the information provision determination apparatus 400 provides traffic information via each optical sensor 200 and each DSRC roadside machine 300 for information provision located in a specific area.
The ultrasonic sensor 600 transmits ultrasonic waves toward the road, measures the arrival time of the reflected wave, and detects the presence of the vehicle passing through the sensor installation point based on the difference in the arrival time.
The image sensor 610 senses the presence of a vehicle passing through the surrounding road by imaging the surrounding road and performing image processing on the image data generated by the imaging.
The signal controller 620 is connected to each signal device, and controls the lighting color (signal display) and lighting time (signal seconds) of the signal device.
The host device 700 (traffic information providing device) is based on traffic information detected by the ultrasonic sensor 600 and the image sensor 610 and signal control information of the signal controller 620, traffic jam information, construction information, accident information, Traffic information (narrow area traffic information, wide area traffic information) such as danger information at intersections, light color information of traffic lights, information of vehicles ignoring signals and information of vehicles approaching from secondary roads using the CPU, information provision determination device 400 Generate with.

  The ultrasonic sensor 600 and the image sensor 610 are examples of detectors that detect a vehicle, a two-wheeled vehicle, a pedestrian, and the like using ultrasonic waves, light, radio waves, images, and the like. Or oncoming straight vehicles or people walking on a pedestrian crossing.

The log collecting DSRC roadside device 500 (running log receiving radio wave side device) includes a log collecting DSRC control unit 510, a log collecting DSRC radio 520, and a log collecting DSRC storage device 590, and the vehicle-mounted device 110 of each vehicle and radio waves The travel log data indicating the operation of the vehicle recorded by the in-vehicle device 110 is collected through communication.
The evaluation apparatus 800 performs evaluation determination using the CPU with respect to provision of traffic information by the information provision determination apparatus 400 and the host apparatus 700 based on the travel log data of each vehicle collected by the log collecting DSRC roadside machine 500. Details of the functional configuration of the evaluation apparatus 800 will be described later with reference to FIG.

Next, the functional configuration of the light detector 200 will be described.
The optical sensor head 220 has a function of transmitting a light wave (for example, a near infrared light beacon) as a carrier wave.
The light sensor control unit 210 controls the light sensor head 220 to emit a modulated light wave, thereby generating the narrow area traffic information generated by the information providing determination device 400 and the host device 700 and the self light light sensor 200. Lane information indicating the lane where the vehicle is installed, distance information to the next intersection, and the like are notified to the in-vehicle device 110 of the vehicle traveling in the lane. The light sensor control unit 210 notifies the in-vehicle device 110 of the lane being traveled by notifying the lane information.
The optical sensor storage device 290 stores narrow area traffic information, lane information, and the like.

Next, the functional configuration of the DSRC roadside machine 300 for providing information will be described.
The DSRC radio 320 for providing information has a function of transmitting radio waves (for example, DSRC beacons) as a carrier wave.
The information providing DSRC control unit 310 controls the information providing DSRC radio 320 to transmit the modulated radio wave, thereby obtaining the wide area traffic information generated by the information providing determination device 400 and the host device 700 for each vehicle. The in-vehicle device 110 is notified. The DSRC control unit 310 for providing information causes the in-vehicle device 110 to acquire traffic information about the traveling lane by notifying wide-area traffic information indicating traffic information of all lanes.
The DSRC storage device 390 for providing information stores wide area traffic information.

Next, the functional configuration of the information provision determination apparatus 400 will be described.
The information provision control unit 410 acquires vehicle detection information from the ultrasonic sensor 600 and the image sensor 610, acquires signal control information from the signal controller 620, and transmits the vehicle detection information and signal control information to the I / F unit B430. To the host device 700 via In addition, the information provision control unit 410 receives the narrow area traffic information and the wide area traffic information from the host device 700 via the I / F part B 430, and receives the narrow area traffic information via the I / F part A 420. The wide area traffic information is transmitted to the DSRC roadside machine 300 for information provision via the I / F part A420.
The I / F unit A 420 transmits the narrow area traffic information output by the information provision control unit 410 to the optical sensor 200 and transmits the wide area traffic information output by the information provision control unit 410 to the information providing DSRC roadside unit 300.
The I / F unit B 430 transmits the vehicle sensing information and the signal control information output from the information provision control unit 410 to the host device 700. In addition, the I / F unit B 430 receives the narrow area traffic information and the wide area traffic information from the host device 700 and outputs them to the information provision control unit 410.
The information providing storage device 490 stores traffic information, vehicle sensing information, signal control information, and the like.

Next, the functional configuration of the DSRC roadside device 500 for log collection will be described.
The log collecting DSRC radio 520 has a function of receiving radio waves (for example, DSRC beacons) as a carrier wave.
The log collecting DSRC control unit 510 controls the log collecting DSRC radio device 520 to communicate with the vehicle-mounted device 110 of each vehicle, thereby collecting vehicle travel log data recorded by the vehicle-mounted device 110 of each vehicle. In addition, the log collecting DSRC control unit 510 notifies the evaluation device 800 of the acquired travel log data of each vehicle.
The log collection DSRC storage device 590 stores travel log data collected from each vehicle.

FIG. 4 is a functional configuration diagram of the evaluation apparatus 800 in the first embodiment.
The functional configuration of the evaluation apparatus 800 in the first embodiment will be described below with reference to FIG.

The log collection control unit 820 (travel log collection unit) collects the travel log data of each vehicle from the log collecting DSRC roadside device 500 via the I / F unit C 830, and the ultrasonic sensor 600 and the information provision determination device 400. The vehicle sensor information of the image sensor 610 and the signal control information of the signal controller 620 are acquired.
Based on the travel log data, vehicle sensing information, and signal control information, the evaluation unit 810 (control unit) determines the traffic information provided by the information provision determination device 400, such as the provision timing of traffic information and the content of a warning message included in the traffic information. Make an assessment of the offer.
The I / F unit C 830 receives the travel log data of each vehicle from each log collecting DSRC roadside device 500 and outputs it to the log collection control unit 820.
The I / F unit D840 transmits the result of the evaluation determination regarding the provision of the traffic information by the evaluation unit 810 to the higher-level device 700.
The display unit 850 displays the evaluation content by the evaluation unit 810 on the display device.
The evaluation storage device 890 stores travel log data, vehicle sensing information, signal control information, evaluation determination results, predetermined evaluation determination reference values, and the like.

FIG. 5 is a functional configuration diagram of in-vehicle device 110 mounted on vehicle 100 in the first embodiment.
A functional configuration of in-vehicle device 110 and vehicle 100 in which in-vehicle device 110 is mounted in the first embodiment will be described below with reference to FIG.
The vehicle 100 includes an in-vehicle device 110, an operation control device 120, and a car navigation system 130.
The vehicle-mounted device 110 includes an optical vehicle-mounted device 112, a DSRC vehicle-mounted device 113, a vehicle-mounted determination unit 111, and a vehicle-mounted storage device 119. The vehicle-mounted device 110 receives traffic information provided from the information provision determination device 400 and the host device 700, and performs voice warning and driving control The operation of the vehicle 100 after receiving the traffic information is recorded as travel log data.

The driving control device 120 controls the speed and traveling direction of the vehicle 100 based on the accelerator opening by the driver's operation, the steering wheel steering amount, and the vehicle control command from the in-vehicle determination unit 111. Further, the operation control device 120 outputs operation information of the vehicle 100 such as the accelerator opening, the steering amount, the speed, and the traveling direction to the in-vehicle device 110.
The car navigation system 130 stores map data, superimposes the position of the vehicle 100 measured using a GPS (Global Positioning System) or a gyro on the map data, displays it on a display device, and outputs voice information such as right / left turn information. This provides traffic guidance to the driver. In addition, the car navigation system 130 outputs position information indicating the position of the measured vehicle 100 to the in-vehicle device 110.

Next, the functional configuration of the in-vehicle device 110 will be described.
The on-vehicle optical device 112 (lane information light wave receiving unit) receives the narrow area traffic information and the lane information indicating the installation lane of the light detector 200 by light waves from the light detector 200.
The DSRC vehicle-mounted device 113 (traffic information radio wave reception unit, travel log radio wave transmission unit) receives wide area traffic information indicating traffic information of all lanes from the information providing DSRC roadside device 300 by radio waves. The DSRC on-board unit 113 transmits traveling log data to the log collecting DSRC roadside device 500 by radio waves.
The in-vehicle determination unit 111 (traffic information extraction unit, vehicle control unit, travel log recording unit) determines that the lane indicated by the lane information received by the optical in-vehicle device 112 is the lane in which the host vehicle 100 is traveling, and is mounted on the DSRC. The traffic information of the driving lane is extracted from the wide area traffic information received by the device 113. And the vehicle-mounted determination part 111 performs vehicle control based on the extracted traffic information. For example, the in-vehicle determination unit 111 outputs a warning message included in the traffic information and causes the car navigation system 130 to output the warning message by voice. Further, for example, the in-vehicle determination unit 111 controls the driving control device 120 based on the traffic information to change the speed and traveling direction of the vehicle 100. Further, the in-vehicle determination unit 111 acquires the operation information of the vehicle 100 from the operation control device 120 for a specific time after the vehicle control based on the extracted traffic information, and records it in the in-vehicle storage device 119 as travel log data. The in-vehicle determination unit 111 also records the position information of the vehicle 100 measured by the car navigation system 130 as travel log data. The in-vehicle determination unit 111 may record the travel log data in the storage device of the DSRC in-vehicle device 113.
The in-vehicle storage device 119 stores travel log data, narrow area traffic information, lane information, and wide area traffic information in a memory. Further, the in-vehicle storage device 119 includes a vehicle ID indicating a vehicle type and the in-vehicle device 110 such as an in-vehicle device ID indicating whether or not the in-vehicle device 110 corresponds to this system that performs vehicle control based on traffic information. Store identification information.

FIG. 6 is a flowchart showing traffic information processing of the electronic intersection system 900 according to the first embodiment.
The traffic information processing of the electronic intersection system 900 according to the first embodiment will be described below with reference to FIG.

First, S101 (traffic information provision processing) in which the host device 700 generates wide area traffic information and narrow area traffic information and transmits the information to the information provision determination apparatus 400 will be described below.
In S101, first, the information provision control unit 410 of each information provision determination device 400 that controls provision of traffic information in a specific area receives vehicle sensing information from the ultrasonic sensor 600 and the image sensor 610, and the signal controller 620. The signal control information is received from the vehicle, and the received vehicle sensing information and signal control information are stored in the information providing storage device 490 (S101a).
Next, the I / F unit B 430 converts the vehicle sensing information and the signal control information received by the information provision control unit 410 into a communication format with the host device 700 and transmits it to the host device 700 (S101b).
Next, the host device 700 receives vehicle sensing information and signal control information for each area from the I / F unit B430 of each information provision determination device 400, and stores the received vehicle sensing information and signal control information in a storage device. (S101c).
Next, the host device 700 uses the vehicle detection information, signal control information, traffic control information, accident information, road construction information, and the like registered in advance in the storage device in each area stored in S101c. Wide area traffic that shows information, road construction information, signal information, right / left turn prohibition information, regulation speed information, parking prohibition information, approach prohibition information, danger information at intersections, vehicle information in the vicinity of intersections ignoring signals and approaching secondary roads, etc. Generate information and narrow area traffic information. The narrow area traffic information generated by the host device 700 indicates traffic information in the light wave communication area of each optical sensor 200, and particularly indicates traffic information of the lane in which each optical sensor 200 is installed. The wide area traffic information generated by the host device 700 indicates traffic information in the radio wave communication area of each information providing DSRC roadside device 300 and a large amount of traffic information. In particular, each information providing DSRC roadside device 300 is installed. Show traffic information for all lanes on the road. Further, the wide area traffic information and the narrow area traffic information generated by the host device 700 include a provision timing and a warning message (S101d).
Next, the host device 700 transmits the generated wide area traffic information and narrow area traffic information to the I / F unit B430 (S101e).
And I / F part B430 receives wide area traffic information and narrow area traffic information from the high-order apparatus 700, and memorize | stores the received wide area traffic information and narrow area traffic information in the information provision memory | storage device 490 (S101f).

Next, the information provision determination device 400 selects traffic information based on the vehicle sensing information and the signal control information, transmits the selected narrow area traffic information to the optical sensor 200, and uses the selected wide area traffic information for information provision. S102 (traffic information provision processing) transmitted to the DSRC roadside device 300 will be described below.
In S102, first, the information provision control unit 410 acquires wide area traffic information, narrow area traffic information, vehicle sensing information, and signal control information from the information provision storage device 490 (S102a).
Next, the information provision control unit 410 selects wide area traffic information and narrow area traffic information to be provided based on the vehicle sensing information and the signal control information. The traffic information to be provided is, for example, information related to the driving state, and as an example, the information provision determination device 400, when the signal control information indicates a red signal, the wide area traffic information and the narrow area traffic excluding the traffic congestion information of the area. Select as wide area traffic information and narrow area traffic information to provide information. As another example, when the information provision determination device 400 indicates information on a vehicle approaching from a slave road, the wide area traffic information of the area including a warning message such as “Vehicle approaching from slave road”. And narrow area traffic information is selected (S102b).
Next, the I / F unit A 420 converts the narrow area traffic information selected by the information providing control unit 410 into a communication format with the light sensor control unit 210, and detects each narrow area traffic information in the corresponding area. To the light sensor control unit 210 of the device 200. Also, the I / F unit A 420 converts the wide area traffic information selected by the information provision control unit 410 into a communication format with the information provision DSRC control unit 310, and provides each wide area traffic information in the corresponding area DSRC. It transmits to the DSRC control part 310 for information provision of the roadside machine 300 (S102c).
The light sensor control unit 210 of each light sensor 200 receives the narrow area traffic information from the I / F part A 420 of the information provision determination device 400 and stores the received narrow area traffic information in the light sensor storage device 290. To do. Further, the information providing DSRC control unit 310 of each information providing DSRC roadside device 300 receives the wide area traffic information from the I / F unit A420 of the information providing determination apparatus 400, and the received wide area traffic information is used as the information providing DSRC storage device. It memorize | stores in 390 (S102d).

Next, S103 (optical path side processing, traffic information transmission radio path side processing) in which the optical sensor 200 transmits narrow area traffic information by light waves and the information providing DSRC roadside machine 300 transmits wide area traffic information by radio waves will be described below. explain.
In S103, first, the light sensor control unit 210 acquires lane information indicating the lane in which the self light sensor 200 is installed and narrow area traffic information from the light sensor storage device 290 (S103a).
Next, the light sensor control unit 210 modulates the narrow area traffic information and the lane information to emit light waves from the light sensor head 220. The reason why the light sensor control unit 210 transmits the lane information as a light wave is that the light wave is strong in straight traveling, and therefore, a spot communication can be performed by forming a communication area of about 3.5 m square. That is, in the lightwave communication area, information indicating the position of each vehicle 100 such as a lane can be transmitted with an accurate accuracy of a positional accuracy of 3.5 m or less. If the light sensor 200 transmits the distance from the installation position of the self-light sensor 200 to the next intersection as light information as information indicating the position, the in-vehicle device 110 that has received the information is based on the traveling speed of the own vehicle. The approach time to the intersection can be calculated. For example, when the distance to the intersection is 250 m and the own vehicle is traveling at a speed of 60 km (km), the in-vehicle device 110 sets the time until the own vehicle enters the intersection to 15 seconds (= 0.25 minutes = 250 [ m] ÷ 1000 [m / min]), and the speed of the vehicle can be controlled based on the calculation result. That is, it is preferable that the light sensor control unit 210 uses a high-frequency light wave having a strong straightness (directivity) in the propagation direction, that is, a light wave having a short wavelength in consideration of performing spot communication. For example, the light sensor control unit 210 may use a light wave having a wavelength of 850 nm (nanometer). In addition, the light sensor control unit 210 may use a light wave having a wavelength corresponding to the spot communication range (for example, lane width) and the installation height of the light sensor 200 (S103b).
Further, the information providing DSRC control unit 310 acquires wide area traffic information from the information providing DSRC storage device 390 (S103c).
Next, the information providing DSRC control unit 310 modulates the information to indicate the wide area traffic information and transmits a radio wave from the information providing DSRC radio 320 (S103d).

Next, S104 (lane information light wave reception process, travel log recording process) in which the in-vehicle device 110 receives the lane information and starts recording the travel log data will be described below.
In S104, first, the optical vehicle-mounted device 112 receives a light wave indicating narrow area traffic information and lane information from the light sensor 200 installed in the travel lane while the host vehicle 100 is traveling (S104a: lane information light wave reception). processing).
Next, the in-vehicle determination unit 111 acquires the narrow area traffic information and the lane information by demodulating the light wave received by the optical in-vehicle device 112, and stores the acquired narrow area traffic information and the lane information in the in-vehicle storage device 119. . The in-vehicle determination unit 111 can detect the traveling lane of the own vehicle 100 by acquiring the narrow area traffic information and the lane information, and can detect that the own vehicle 100 has entered the electronic intersection service area ( S104b).
The in-vehicle determination unit 111 that has detected the entry into the electronic intersection service area acquires the operation information of the vehicle 100 from the operation control device 120 and also acquires the position information (for example, (latitude, longitude, altitude)) of the vehicle 100 in the car navigation system 130. And stored in the in-vehicle storage device 119 as travel log data. That is, the in-vehicle determination unit 111 starts to store the vehicle state in the memory as the travel log data together with the time stamp using the reception of the narrow area traffic information and the lane information from the optical sensor 200 as a trigger. However, the in-vehicle determination unit 111 may start to store the travel log data triggered by reception of wide area traffic information from the DSRC roadside machine 300 for providing information. Moreover, the vehicle-mounted determination part 111 may memorize | store driving log data in the memory of DSRC onboard equipment 113 (S104c: driving log recording process).
The vehicle-mounted determination unit 111 waits for the provision timing indicated by the acquired narrow area traffic information, and controls the driving control device 120 and the car navigation system 130 based on the narrow area traffic information when the provision timing comes. Do. For example, the in-vehicle determination unit 111 performs a warning control that outputs a warning message included in the narrow area traffic information, causes the car navigation system 130 to make a voice warning, and causes the driver to adjust an accelerator or a steering wheel. Further, for example, the in-vehicle determination unit 111 performs an automatic driving control such as outputting a deceleration command to cause the driving control device 120 to decelerate the vehicle 100 (S104d: vehicle control process).

Next, S105 (traffic information radio wave reception processing, traffic information extraction processing, vehicle control processing) in which the in-vehicle device 110 receives the wide-area traffic information and performs vehicle control will be described below.
In S105, first, the DSRC in-vehicle device 113 receives a radio wave indicating wide area traffic information from the DSRC roadside device 300 for providing information (S105a: traffic information radio wave reception process).
Next, the in-vehicle determination unit 111 acquires wide-area traffic information by demodulating the radio wave received by the DSRC in-vehicle device 113, and stores the acquired wide-area traffic information in the in-vehicle storage device 119 (S105b).
Next, the vehicle-mounted determination unit 111 extracts traffic information about the travel lane indicated by the lane information received in S104 from the wide area traffic information (S105c: traffic information extraction processing).
Next, the vehicle-mounted determination unit 111 waits for the provision timing indicated by the wide area traffic information. Here, the provision timing is, for example, from the distance information to the next intersection of the installation position of the own light sensor 200 received by the in-vehicle device 110 from the light sensor 200 and the next intersection of the own vehicle calculated from the speed of the own vehicle. Judgment based on distance information. The vehicle control is performed by controlling the driving control device 120 and the car navigation system 130 based on the wide-area traffic information of the traveling lane when the provision timing of the wide-area traffic information is reached. For example, the in-vehicle determination unit 111 performs a warning control that outputs a warning message included in the wide area traffic information, causes the car navigation system 130 to make a voice warning, and causes the driver to adjust an accelerator or a steering wheel. Further, for example, the in-vehicle determination unit 111 performs an automatic driving control such as outputting a deceleration command to cause the driving control device 120 to decelerate the vehicle 100 (S105d: vehicle control process).

Next, S106 in which the in-vehicle device 110 ends the recording of the travel log data after a predetermined time has elapsed will be described below.
In S <b> 106, when the in-vehicle determination unit 111 determines that a predetermined time has elapsed since the start of the recording of the travel log data, the in-vehicle storage device 119 that stores the travel log data detects that the free storage capacity has disappeared. In this case, when the travel log data is transmitted to the log collecting DSRC roadside device 500, or when the next wide area traffic information is received from the information providing DSRC roadside device 300, the recording of the travel log data is terminated.

Next, S107 (travel log reception radio wave side processing, travel log radio wave transmission processing) in which the log collecting DSRC roadside device 500 collects travel log data from the in-vehicle device 110 of each vehicle 100 and transmits it to the evaluation device 800 will be described below. explain.
FIG. 7 is a diagram showing a communication protocol configuration in DSRC.
DSRC is dedicated narrow area communication, for example, communication using a frequency band of 5.8 GHz (gigahertz) as a carrier wave. DSRC is used in, for example, ETC (Electronic Toll Collection System).
In S107, the DSRC roadside device 500 for log collection collects travel log data from the in-vehicle device 110 of each vehicle using the in-vehicle device memory access AP (application protocol) in FIG. The on-vehicle device memory access AP directly accesses memory data stored in the memory chip (or memory area) mounted on the in-vehicle device 110 through road-to-vehicle communication, collects memory data, deletes memory data, and newly It has a function of overwriting (writing) data in the memory. In road-to-vehicle communication using the current DSRC, an action is given to the in-vehicle device 110 from a roadside machine to exchange information related to communication. In other words, since the current road-to-vehicle communication exchanges information related to communication, the roadside unit cannot collect vehicle-specific information such as travel log data, but can only collect information unique to the vehicle-mounted device. is there. The information unique to the vehicle-mounted device refers to setup information stored in the fixed memory area of the vehicle-mounted device. In contrast, the DSRC roadside device 500 for log collection according to the present embodiment communicates meaningful data such as travel log data by communicating with the vehicle-mounted device 110 of each vehicle 100 using the vehicle-mounted device memory access AP. It can be collected from a memory area different from the fixed memory area for setup information. This area stores past and present data such as travel log data. In the DSRC in-vehicle device memory access AP, the communication channel in the DSRC communication band is time-divided into a plurality of communication slots, and each communication slot is assigned to the in-vehicle device 110 of each vehicle 100, and the assigned communication slot. Is transmitted from the in-vehicle device 110 of each vehicle 100 to the log collecting DSRC roadside device 500. Each vehicle 100 is identified using a vehicle ID or the like stored in the in-vehicle storage device 119 of the in-vehicle device 110. Further, in the push type information distribution AP in FIG. 7, information is transmitted from the information providing DSRC roadside device 300 to the in-vehicle device 110 of each vehicle 100 using the communication slot assigned in the same manner as the in-vehicle device memory access AP. By using the DSRC communication protocol, the log collecting DSRC roadside device 500 can perform time-efficient communication with the in-vehicle device 110 of each of the plurality of moving vehicles 100 using one communication channel. In addition, the information providing DSRC roadside device 300 can collect data while the log collecting DSRC roadside device 500 provides information to the in-vehicle device 110 of each vehicle 100. Further, the in-vehicle device 110 of each vehicle 100 can receive information and collect data by the same control unit (in-vehicle determination unit 111) that performs DSRC communication processing.
In S107, the in-vehicle determination unit 111 acquires the travel log data, the vehicle ID, and the in-vehicle device ID from the in-vehicle storage device 119, and modulates the radio wave to indicate the acquired travel log data (including the vehicle ID and the in-vehicle device ID). Then, a radio wave indicating the travel log data is transmitted at the timing of the communication slot assigned by the on-board unit memory access AP of the DSRC (S107a: travel log radio wave transmission process).
Then, the log collection DSRC radio 520 receives radio waves indicating the travel log data transmitted using each communication slot, and the log collection DSRC control unit 510 demodulates the radio waves received by the log collection DSRC radio 520. The travel log data is acquired, and the acquired travel log data is stored in the log collecting DSRC storage device 590. In this way, the log collecting DSRC roadside device 500 collects the travel log data of each vehicle 100 (S107b: travel log reception radio path side processing).

Next, S108 (travel log collection processing, evaluation processing) in which the evaluation apparatus 800 receives travel log data from the log collecting DSRC roadside device 500 and performs evaluation determination regarding provision of traffic information will be described below.
In S108, the evaluation apparatus 800 compares the travel log data of each vehicle 100 with a predetermined reference value for evaluation, and makes an evaluation determination regarding provision of traffic information. For example, the evaluation device 800 provides whether or not the timing for providing danger warning information is optimal, whether or not the timing for providing information according to the vehicle type is optimal, and whether or not the timing for providing information according to traffic conditions at an intersection is optimal The voice data content to be analyzed is analyzed based on the trajectory after the vehicle receives the traffic information, the degree of deceleration, the steering status of the steering wheel, and the like.
Details of S108 will be described later with reference to FIG.

Next, S109 (control processing) in which the evaluation apparatus 800 transmits the evaluation result to the upper apparatus 700 and the information provision determination apparatus 400 and the upper apparatus 700 reflect the evaluation result in provision of traffic information will be described below.
In S <b> 109, the I / F unit D 840 converts the evaluation result generated by the evaluation unit 810 into a communication format with the higher-level device 700 and transmits it to the higher-level device 700. The evaluation result indicates, for example, an information provision timing or an instruction to change the content of provision information.
In step S101, the host device 700 changes the information provision timing and the content of the provision information according to the evaluation result, and generates wide area traffic information and narrow area traffic information.

FIG. 8 is a flowchart showing the evaluation determination process of the evaluation apparatus 800 in the first embodiment.
The evaluation determination process of the evaluation apparatus 800 in Embodiment 1 is demonstrated below based on FIG.

First, S201 (travel log collection processing) in which the evaluation unit 810 inputs travel log data, vehicle sensing information, and signal control information will be described below.
In step S201, the log collection control unit 820 first collects travel log data from the log collection DSRC control unit 510 of each log collection DSRC roadside device 500 via the I / F unit C830, and evaluates the collected travel log data. Store in the storage device 890. At this time, the log collection DSRC control unit 510 of each log collection DSRC roadside device 500 acquires the travel log data of each vehicle 100 from the log collection DSRC storage device 590 and transmits it to the I / F unit C830 (S201a). .
Further, the log collection control unit 820 acquires past vehicle detection information and signal control information stored in the information provision storage device 490 from the information provision determination device 400, and acquires the acquired vehicle detection information and signal control information. Is stored in the evaluation storage device 890. At this time, the information provision control unit 410 of the information provision determination device 400 transmits the vehicle sensing information and the signal control information stored in the information provision storage device to the log collection control unit 820 (S201b).
Next, the evaluation unit 810 acquires travel log data from the evaluation storage device 890. Further, the evaluation unit 810 acquires the vehicle sensing information and the signal control information in the time zone indicated by the time stamp of the acquired travel log data from the evaluation storage device 890 (S202c).

Next, S202 in which the evaluation unit 810 specifies the traffic volume at the time of traveling log data recording and the vehicle type of the vehicle 100 on which the traveling log data is recorded will be described below.
In S202, first, the evaluation unit 810 calculates the traffic volume based on the number of vehicles 100 indicated by the vehicle sensing information and the speed of the vehicle 100 indicated by the travel log data (S202a).
Next, the evaluation unit 810 determines whether the road is congested or normal based on the lighting color of the signal indicated by the signal control information and the calculated traffic volume (S202b).
Further, the evaluation unit 810 identifies the vehicle type of the vehicle 100, for example, a small vehicle, a medium vehicle, a large vehicle, or a two-wheeled vehicle, based on the vehicle ID indicated by the travel log data (S202c).

Next, S203 in which the evaluation unit 810 acquires the determination reference value corresponding to the traffic volume and the vehicle type from the evaluation storage device 890 will be described below.
The evaluation storage device 890 stores predetermined determination reference values in advance in association with the traffic volume, the vehicle type, and the operation type. The operation type includes accelerator opening, steering wheel steering amount, speed, travel locus (movement amount of the vehicle 100), and the like, and the determination reference value includes corresponding time, variation rate, change amount, and the like.
The evaluation unit 810 acquires from the evaluation storage device 890 determination criteria values such as corresponding time, variation rate, and change amount corresponding to the traffic volume and vehicle type specified in S202.

Next, S204 (evaluation process) in which the evaluation unit 810 compares the operation amount of the vehicle 100 with the determination reference value to generate an evaluation result will be described below.
FIG. 9 is a graph showing the vehicle operation amount based on the travel log data in the first embodiment.
The evaluation unit 810 generates graph data based on the travel log data, and the display unit 850 displays a graph indicating the vehicle operation amount as shown in FIG. 9 on the display device based on the graph data. In the graph of the vehicle operation amount shown in FIG. 9, the horizontal axis indicates “time”, and the vertical axis indicates each operation amount. For example, in FIG. 9, the travel locus is a vehicle operation amount, the longitude at which the vehicle 100 is located at each time is expressed as “coordinate X”, and the latitude is expressed as “coordinate Y”. FIG. 9 shows the speed [km / h], the steering amount of the steering wheel (rotation angle of the steering wheel) [degree], and the accelerator opening (force related to the accelerator) [kg] at each time. Further, FIG. 9 shows “warning information reception time” when the in-vehicle device 110 of the vehicle 100 receives the wide area traffic information (or narrow area traffic information), and the in-vehicle apparatus 110 based on the wide area traffic information (or narrow area traffic information). "Corresponding time" when the operation of the vehicle 100 has changed in response to vehicle control such as voice output of the warning message performed in the above, and "corresponding time" that is the time from "warning information reception time" to "corresponding time" Is shown. FIG. 9 shows a “corresponding time” in which the variation rate of the steering wheel steering amount is equal to or greater than a predetermined ratio and a “corresponding time” from the “warning information reception time”.
In S204, first, the evaluation unit 810 calculates a “variation rate” at each time for each vehicle operation amount such as the accelerator opening, the steering amount, the speed, and the travel locus based on the travel log data. Is calculated as the “corresponding time”, the “corresponding time” from the “warning information reception time” to the “corresponding time” is calculated, and the “change” of the specific time before and after the “corresponding time” is calculated. Amount "is calculated (S204a).
Next, the evaluation unit 810 compares the calculated value in S204a and the determination reference value acquired in S203 for at least one of “corresponding time”, “variation rate”, and “change amount” (S204b).
Next, the evaluation unit 810 generates an evaluation result based on the comparison result and stores it in the evaluation storage device 890 for the purpose of improving the traffic accident suppression effect by providing the traffic information. For example, the evaluation unit 810 determines whether the calculated value of “corresponding time” is shorter than the determination reference value, the calculated value of “variation rate” is larger than the determination reference value, or the calculated value of “change amount”. An evaluation indicating that “the information provision timing is advanced” or “the content of the warning message is suppressed” when the provision of traffic information indicates that the vehicle 100 has fluctuated rapidly, such as when it is larger than the reference value. Generate results. Further, for example, the evaluation unit 810 may calculate the “corresponding time” when the calculated value of the “corresponding time” is longer than the determination reference value, the calculated value of the “variation rate” is smaller than the determination reference value, or the calculated value of the “change amount”. Indicates that “the information provision timing is delayed” or “the content of the warning message is strengthened” when the guidance effect of the vehicle 100 by the provision of traffic information is small, such as when it is smaller than the determination reference value Generate an evaluation result. Further, the evaluation unit 810 sets the degree of advancement or delay of the information provision timing or the degree of suppression or enhancement of the content of the warning message according to the difference between each calculated value and the determination reference value in the evaluation result (S204b).
Then, the evaluation unit 810 transmits the generated evaluation result to the host device 700 via the I / F unit D840 (S204c).
Further, the evaluation unit 810 generates graph data representing a graph indicating the vehicle operation amount as shown in FIG. 9 based on the travel log data, and stores the generated graph data in the evaluation storage device 890 (S204d).
The display unit 850 displays a graph as shown in FIG. 9 on the display device based on the graph data generated by the evaluation unit 810. Further, the display unit 850 displays the evaluation result generated by the evaluation unit 810 on the display device (S204e).

  Thereafter, the host device 700 that has received the evaluation result from the evaluation device 800 generates traffic information by reflecting the evaluation result in S101, and the information provision determination device 400 is connected to each of the optical sensors 200 and each in S102 to S103. The traffic information reflecting the evaluation result is provided to each vehicle 100 via the DSRC roadside machine 300 for providing information. For example, the host device 700 stores a warning message and information indicating information provision timing in a storage device for each level, and generates traffic information including a warning message of a level corresponding to the evaluation result and the information provision timing.

The electronic intersection system 900 according to the first embodiment has the following characteristics.
(1) Evaluate and determine the degree of deceleration at each intersection, the time until lane change, etc. for each vehicle type.
(2) The evaluation is determined according to the difference in the vehicle behavior depending on the traffic volume and the traffic condition.
(3) Evaluate and determine how the vehicle behaves with respect to the audio data content.
(4) The difference in behavior for each vehicle type at each intersection is reflected in the traffic information providing function, and the recommended warning timing to the driver is notified to the vehicle according to the vehicle type.
(5) If there are many sudden brakes or sudden handles, advance the information provision timing or relax the warning.

In addition, the electronic intersection system 900 receives the traffic information provided from the electronic intersection and stores the log data such as the traveling behavior / trajectory of the vehicle and the in-vehicle apparatus 110 by wireless communication on the outflow side of the intersection. A log collection DSRC roadside device 500 that collects accumulated log data, and an evaluation device 800 that analyzes the collected data to evaluate the effectiveness of the information provided from the electronic intersection and correct the information provision Is one of the features.
With this configuration, the electronic intersection system 900 automatically logs the log data indicating the operation contents of the driver's accelerator, brake, turn signal, etc. before and after receiving the traffic information provided from the electronic intersection without stopping the vehicle. It is possible to check the validity of the information collected and provided and to correct the provided information.

Further, the electronic intersection system 900 according to the first embodiment has the following characteristics.
A DSRC beacon, which is an example of a radio wave transmitted by the DSRC roadside machine 300 for information provision, has a modulation signal speed of 4 Mbps and can be used for large-capacity communication. However, the travel position of the vehicle 100 is determined from the reception position of the DSRC beacon. This is difficult considering the directivity of radio waves. Further, even in the GPS-equipped vehicle 100, an error of several tens of meters occurs in the own vehicle position due to the influence of multipath. Therefore, as shown in the first embodiment, a method using an optical beacon is effective for accurately identifying the vehicle position. The following points can be cited as merits of knowing the vehicle position accurately. In order to determine whether the vehicle is information that must be avoided based on the received traffic information, the in-vehicle device 110 needs to know the position of the vehicle accurately. For example, when the host vehicle is in a right turn lane, it is recognized by spot communication from an optical beacon with very few multipaths that the host vehicle is in a right turn lane. Then, when a warning message such as “approaching at xxkm / h” is received as the approach information of the vehicle on the oncoming lane, only the vehicle 100 in the right turn lane outputs the warning message by voice. Further, guidance is not necessary for the vehicle 100 that is not on the right turn lane. In addition, by accurately knowing the position of the vehicle, it is possible to accurately grasp the time until the vehicle enters the intersection based on the position of the intersection and the speed of the vehicle, and the in-vehicle device 110 predicts a dangerous situation approaching urgently, It is also possible to avoid danger by automatically controlling the vehicle 100. In addition, by notifying the vehicle 100 of information on the intersection, it is possible to prevent the vehicle 100 from erroneously entering or recklessly entering the intersection. Moreover, in the electronic intersection system 900 in the said Embodiment 1, it can implement | achieve conveying a present signal lamp color to a driver. Further, in the electronic intersection system 900, the in-vehicle device 110 performs automatic operation control by transmitting the remaining signal display time to the in-vehicle device 110 without transmitting the current signal light color to the driver, and erroneously enters the intersection of the own vehicle. The risk of reckless entry can be further reduced.

As described above, the in-vehicle device of the above-described embodiment is
A traffic information radio wave reception unit that receives road traffic information including traffic information of multiple lanes by radio waves,
A lane information light wave receiving unit that receives light lane information of a lane in which the light path side machine is installed from a light path side machine installed in the lane in which the vehicle travels;
Traffic that uses a CPU (Central Processing Unit) to extract traffic information of a lane in which the vehicle travels based on lane information received by the lane information light wave receiving unit from road traffic information received by the traffic information radio wave receiving unit An information extractor;
A vehicle control unit that performs vehicle control using a CPU based on traffic information of a lane in which the vehicle travels extracted by the traffic information extraction unit;
A travel log recording unit that records operation information of the vehicle after vehicle control by the vehicle control unit in a storage device as travel log data;
And a travel log radio wave transmission unit that transmits the travel log data recorded by the travel log recording unit by radio waves.

In-vehicle devices
A traffic information radio wave receiving unit that receives traffic information of each lane of the road provided by the radio roadside device;
A lane information light wave receiving unit that receives light waves from an optical path side device installed in a lane in which the vehicle travels;
A travel log recording unit that records the operation information of the vehicle in a storage device as a travel log data together with a time stamp, triggered by reception of light waves by the lane information light wave receiving unit,
And a travel log radio wave transmission unit that transmits the travel log data recorded by the travel log recording unit to the radio roadside device by radio waves based on the travel log data of each vehicle.

The in-vehicle device further includes
Based on the reception information of the light wave received by the lane information light wave receiving unit, the traffic information of the lane in which the vehicle travels is obtained from the traffic information of each lane received by the traffic information radio wave receiving unit by a CPU (Central Processing Unit). A traffic information extraction unit to extract using,
A vehicle control unit that performs vehicle control using a CPU based on traffic information of a lane in which the vehicle travels extracted by the traffic information extraction unit;
The travel log recording unit records operation information of the vehicle after vehicle control by the vehicle control unit.

  The lane information light wave receiving unit receives a light wave having a communication range within a lane width of a lane in which the vehicle travels by spot communication.

The travel log collection unit collects data indicating an operation amount of the vehicle among at least one of an accelerator opening, a steering amount, a speed, and a travel locus as operation information.

The lane information light wave receiving unit receives a light wave including narrow area traffic information of a lane in which the vehicle travels and provision timing for providing the narrow area traffic information,
The traffic information radio wave reception unit receives radio waves including wide area traffic information indicating traffic information of all lanes and provision timing for providing wide area traffic information,
The vehicle control unit
Based on the narrow area traffic information at the provision timing to provide the narrow area traffic information, either vehicle driving control or car navigation system control,
It is characterized in that either vehicle driving control or car navigation system control is performed based on the wide area traffic information at the provision timing for providing wide area traffic information.

  The travel log radio wave transmission unit transmits the travel log data by radio waves in each communication slot in which a communication channel is time-divided.

In addition, the traffic information system of the embodiment described above is
The in-vehicle device;
A radio roadside device that receives the traveling log data of each vehicle from the in-vehicle device of each vehicle by radio waves,
And an evaluation device that collects travel log data received by the radio side device and stores it in a storage device.

The evaluation device is
Update the traffic information by evaluating the operation information of each vehicle indicated by the travel log data stored in the storage device,
The traffic information system further includes:
And a traffic information providing device that generates traffic information of each lane transmitted to the in-vehicle device of each vehicle based on the traffic information updated by the evaluation device.

Further, the in-vehicle information processing method of the in-vehicle device according to the embodiment described above is
The traffic information radio wave reception unit performs traffic information radio wave reception processing to receive road traffic information including traffic information of multiple lanes by radio wave,
The lane information light wave receiving unit performs lane information light wave reception processing for receiving lane information of the lane in which the optical path side machine is installed from the optical path side machine installed in the lane in which the vehicle is traveling,
A traffic information extracting unit obtains traffic information of a lane in which the vehicle travels based on lane information received by the lane information light wave receiving unit from a traffic information of a road received by the traffic information radio wave receiving unit, and a CPU (Central Processing Unit). To extract the traffic information extracted using
A vehicle control unit performs a vehicle control process for performing vehicle control using a CPU based on traffic information of a lane in which the vehicle travels extracted by the traffic information extraction unit,
A travel log recording unit performs a travel log recording process of recording operation information of the vehicle after vehicle control by the vehicle control unit as a travel log data in a storage device,
The travel log radio wave transmission unit performs a travel log radio wave transmission process of transmitting the travel log data recorded by the travel log recording unit by radio waves.

In addition, the in-vehicle information processing method of the embodiment described above is
The traffic information radio wave reception unit performs traffic information radio wave reception processing to receive traffic information of each lane of the road provided by the radio roadside device,
A lane information light wave receiving unit performs a lane information light wave reception process for receiving a light wave from an optical path side device installed in a lane in which the vehicle travels,
A travel log recording unit performs a travel log recording process that records the operation information of the vehicle as a travel log data together with a time stamp in a storage device, triggered by reception of light waves by the lane information light wave reception unit,
The travel log radio wave transmission unit performs a travel log radio wave transmission process in which the travel log data recorded by the travel log recording unit is transmitted by radio waves to the radio side device based on the travel log data of each vehicle.

  Furthermore, the in-vehicle information processing program of the above-described embodiment causes a computer to execute the in-vehicle information processing method.

  100, 101, 102, 103 Vehicle, 110 Vehicle-mounted device, 111 Vehicle-mounted determination unit, 112 Optical vehicle-mounted device, 113 DSRC vehicle-mounted device, 119 Vehicle-mounted storage device, 120 Operation control device, 130 Car navigation system, 200 Light detector, 210 Light Sensor control unit, 220 optical sensor head, 290 optical sensor storage device, 300 DSRC roadside device for providing information, 310 DSRC control unit for providing information, 320 DSRC radio for providing information, 390 DSRC storage device for providing information, 400 Information Provision Determination Device, 410 Information Provision Control Unit, 420 I / F Part A, 430 I / F Part B, 490 Information Provision Storage Device, 500 Log Collection DSRC Roadside Unit, 510 Log Collection DSRC Control Unit, 520 Log DSRC radio for collection, 590 DSRC storage device for log collection, 00 Ultrasonic sensor, 610 Image sensor, 620 Signal controller, 700 Host device, 800 Evaluation device, 810 Evaluation unit, 820 Log collection control unit, 830 I / F unit C, 840 I / F unit D, 850 Display Part, 890 evaluation storage device, 900 electronic intersection system, 911 CPU, 912 bus, 913 ROM, 914 RAM, 915 communication board, 920 magnetic disk device, 921 OS, 923 program group, 924 file group.

Claims (11)

An in-vehicle device mounted on a vehicle,
A traffic information radio wave reception unit that receives traffic information of multiple lanes by radio waves,
A lane information light wave receiving unit for receiving a light wave including information indicating the position of the lane and the vehicle from an optical path side device installed in the lane in which the vehicle travels;
Based on traffic information of a plurality of lanes received by the traffic information radio wave reception unit, a vehicle control unit that performs output control of a warning message of a car navigation system of the vehicle,
A travel log that records the timing of providing a warning message of the car navigation system by the vehicle control unit and positioning information of the vehicle as a travel log data in a storage device with the reception of the light wave by the lane information light wave receiving unit as a trigger A recording section;
An in-vehicle apparatus comprising: a travel log radio wave transmission unit that transmits the travel log data recorded by the travel log recording unit by radio waves. The lane information light wave receiving unit receives a light wave including narrow area traffic information of a lane in which the vehicle travels and provision timing for providing the narrow area traffic information,
The vehicle control unit
After receiving the narrow area traffic information, wait for the provision timing to provide the narrow area traffic information, and when the provision timing to provide the narrow area traffic information comes, the vehicle car navigation system warning based on the narrow area traffic information The in-vehicle apparatus according to claim 1, wherein output control of a message is performed.   The in-vehicle device according to claim 1 or 2, wherein the travel log recording unit records the operation information of the vehicle after the output control of the warning message by the vehicle control unit is included in the travel log data. 4. The travel log collection unit collects data indicating an operation amount of at least one of an accelerator opening, a steering amount, a speed, and a travel locus as operation information of the vehicle. The in-vehicle device described.   The in-vehicle device according to any one of claims 1 to 4, wherein the lane information light wave receiving unit receives a light wave having a communication range within a lane width of a lane in which the vehicle travels by spot communication.   The in-vehicle device according to claim 1, wherein the travel log radio wave transmission unit transmits the travel log data by radio waves in each communication slot in which a communication channel is time-divided. The in-vehicle device according to any one of claims 1 to 6,
A radio roadside device that receives the traveling log data of each vehicle from the in-vehicle device of each vehicle by radio waves,
A traffic information system comprising: an evaluation device that collects travel log data received by the radio roadside device and stores the travel log data in a storage device. The evaluation device is
Update the traffic information by evaluating the operation information of each vehicle indicated by the travel log data stored in the storage device,
The traffic information system further includes:
The traffic information system according to claim 7, further comprising: a traffic information providing device that generates traffic information of each lane transmitted to the in-vehicle device of each vehicle based on the traffic information updated by the evaluation device. . An in-vehicle information processing method for an in-vehicle device mounted on a vehicle,
The traffic information radio wave reception unit performs traffic information radio wave reception processing to receive traffic information of multiple lanes with radio waves,
The lane information light wave receiving unit performs a lane information light wave receiving process for receiving a light wave including information indicating the lane and the position of the vehicle from an optical path side device installed in the lane in which the vehicle travels. However, based on the traffic information of the plurality of lanes received by the traffic information radio wave receiver, vehicle control processing for performing output control of the warning message of the car navigation system of the vehicle,
A travel log recording unit stores, as a travel log data, a timing of providing a warning message of the car navigation system and vehicle positioning information by the vehicle control unit together with a time stamp, triggered by reception of a light wave by the lane information light wave receiving unit. Perform a running log recording process to be recorded on the device,
An in-vehicle information processing method for an in-vehicle device, wherein the travel log radio wave transmission unit performs a travel log radio wave transmission process of transmitting the travel log data recorded by the travel log recording unit by radio waves. The lane information light wave receiving unit receives a light wave including narrow area traffic information of a lane in which the vehicle travels and provision timing for providing the narrow area traffic information,
The vehicle control unit
After receiving the narrow area traffic information, wait for the provision timing to provide the narrow area traffic information, and when the provision timing to provide the narrow area traffic information comes, the vehicle car navigation system warning based on the narrow area traffic information 11. The in-vehicle information processing method for an in-vehicle device according to claim 10, wherein message output control is performed.   An in-vehicle information processing program for an in-vehicle device, which causes a computer to execute the in-vehicle information processing method for the in-vehicle device according to claim 9 or 10.

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