JP5387847B2 - Recording system - Google Patents

Description

  The present invention relates to a recording system such as a drive recorder that is mounted on a vehicle and records the state of an accident by recording at least image information around the vehicle.

2. Description of the Related Art Conventionally, an in-vehicle video recording device that captures a video around a vehicle with an imaging device such as a camera mounted on the vehicle, and records the peripheral video and the vehicle speed when an impact is applied to the vehicle, such as a collision or sudden braking, a so-called drive A recorder has been proposed. By installing the drive recorder in the vehicle, it is possible to verify the cause of the accident by analyzing the recorded information when an accident occurs. In addition, the driver's awareness of safe driving can be improved, and a video recording the daily driving situation can be used for safety driving guidance and the like.
As an example of the drive recorder as described above, Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-205227) discloses a drive recorder mounted on a vehicle, and communication means for receiving an accident occurrence notification message of another vehicle. Photographing outside the vehicle and outputting as photographing data; memory; and when the communication means receives the accident occurrence notification message, within a predetermined period including the reception time of the accident occurrence notification message. There is disclosed a drive recorder characterized by comprising control means for performing control for storing photographing data output from the photographing means in the memory.
JP 2006-199110 A

  However, in the conventional drive recorder, after the accident occurrence notification message issued after another vehicle has caused an accident, the image output from the imaging means within a predetermined period including the reception time of the accident occurrence notification message Since control to save data in memory is performed, for example, if a vehicle equipped with a drive recorder is involved in an accident, and the communication unit for receiving messages is damaged due to an accident collision, There was a possibility that the accident occurrence notification message that is a trigger for storing data could not be received, and the captured data could not be stored in the memory.

  In order to solve the above problems, the invention according to claim 1 is a recording system that is mounted on a vehicle and includes a plurality of recorder devices that record at least image information around the vehicle, and acquires position information of the surrounding vehicle. Based on the position information of the surrounding vehicle determined from the image information and the ID information, ID information acquisition means for acquiring the ID information of the recorder device mounted on the other vehicle existing within the reference distance from the own vehicle A collision possibility calculation unit for calculating the collision possibility of the host vehicle, a determination unit for determining whether the collision possibility calculated by the collision possibility calculation unit is a predetermined value or more, and a determination by the determination unit Transmission means for transmitting a record storage request to the recorder apparatus having the ID acquired by the ID information acquisition means based on the result, That.

  According to a second aspect of the present invention, in the recording system according to the first aspect, the transmission unit directly transmits a record storage request to the recorder device having the ID acquired by the ID information acquisition unit by inter-vehicle communication. It is characterized by doing.

According to a third aspect of the present invention, in the recording system according to the first aspect, the transmission unit obtains a record storage request via the server device by the ID information acquisition unit.
It transmits to the recorder apparatus of D, It is characterized by the above-mentioned.

  According to the recording system of the present invention, it is determined whether or not the collision possibility calculated by the collision possibility calculation means is equal to or greater than a predetermined value, and a recording storage request is transmitted to the recorder device based on the determination result. Therefore, it is possible to receive a record storage request that is a trigger for data storage before hardware such as communication means is damaged due to an accident collision, and the accuracy of accident data collection is improved as compared with the prior art.

It is a figure which shows the outline of the vehicle-mounted system in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows the outline of a block configuration of the vehicle-mounted system in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the packet data which the vehicle-to-vehicle communication unit 510 transmits / receives in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows the flowchart of the process in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows the flowchart of the subroutine of ID information acquisition process in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows the flowchart of the subroutine of a collision possibility calculation process in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows the flowchart of the subroutine of the preservation | save request packet check process in the recording system which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the traffic condition on a road. It is a figure which shows an example of data transmission / reception in a recording system which concerns on 2nd Embodiment of this invention, and an example of data processing. It is a figure which shows an example of the packet data used for transmission / reception between the vehicle and center server in the recording system which concerns on 2nd Embodiment of this invention. It is a figure which shows the flowchart of the vehicle side mounting system in the recording system which concerns on 2nd Embodiment of this invention. It is a figure which shows the flowchart by the side of the center server in the recording system which concerns on 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an outline of an in-vehicle system in the recording system according to the first embodiment of the present invention, and FIG. 2 is a diagram showing an outline of a block configuration of the in-vehicle system in the recording system according to the first embodiment of the present invention. It is. 1 and 2, 10 is a vehicle, 100 is an ECU, 120 is a timer, 200 is a travel information acquisition unit, 210 is a vehicle speed sensor, 220 is a steering sensor, 230 is an accelerator opening sensor, 240 is a brake pedal sensor, 400 is a vehicle periphery information acquisition unit, 420 is a stereo camera unit, 430 is a sound collection unit, 500 is a communication unit, 510 is a vehicle-to-vehicle communication unit, 511 is a vehicle ID storage unit, 512 is a communication management buffer, 700 is a recorder device, Reference numeral 710 denotes a storage unit, 720 denotes a recorder device ID storage unit, 800 denotes a navigation system unit, 810 denotes a navigation system, 811 denotes a high-accuracy GPS position information acquisition unit, and 820 denotes a database.

The in-vehicle system shown in FIGS. 1 and 2 shows what is mounted on one vehicle, but the in-vehicle system according to the present embodiment cooperates with individual devices mounted on a plurality of vehicles. By doing so, the function can be exhibited. Therefore, in the following description, a traffic environment is assumed in which the in-vehicle system mounted on the vehicle 10 shown in FIGS. 1 and 2 is mounted on each vehicle traveling on the road. The recording system of the present embodiment is equipped with an engine as a prime mover and travels with the driving force of the engine, or an electric vehicle with a motor as the prime mover and travels only with the driving force of the motor, or Both of the above can be mounted as a prime mover and can be mounted on a vehicle such as a hybrid vehicle that travels based on driving by a motor and / or an engine.

  In the in-vehicle system according to the present embodiment, the ECU 100 is an abbreviation for an electronic control unit, and is a general-purpose information processing mechanism including a CPU, a ROM that holds a program that operates on the CPU, and a RAM that is a work area of the CPU. The ECU 100 cooperates and operates with each component connected to the illustrated ECU 100. Further, the ECU 100 executes various control processes in the recording system of the present invention based on programs and data stored and held in storage means such as a ROM in the ECU 100. The “calculation means” and “determination means” described in the claims express the operation of the ECU 100 conceptually. In the present embodiment, each of the above means is realized by the ECU 100 and a program executed on the ECU 100. However, these means are not limited to this, and hardware such as a logic circuit is used. It may be realized only by wear.

  The ECU 100 further includes a time measuring unit 120. The time measuring unit 120 is a timer and is used for time measurement. The time data measured by the time measuring unit 120 is stored in the storage unit 710 of the recorder device 700 together with the image data and audio data acquired by the vehicle surrounding information acquisition unit 400.

  The travel information acquisition unit 200 is configured to acquire information related to actual travel of the vehicle 10 or driving investigation information, for example, a vehicle speed sensor 210, a steering sensor 220, an accelerator opening sensor 230, a brake pedal sensor 240, and the like. Is included.

  The vehicle speed sensor 210 in the travel information acquisition unit 200 performs sensing (measurement) of the speed of the vehicle 10 (vehicle speed). In addition, you may make it provide other sensors as what acquires the driving | running | working condition of a vehicle.

  In the travel information acquisition unit 200, the steering sensor 220 detects the steering angle of the steering of the vehicle 10, and the accelerator opening sensor 230 detects the amount of depression of the accelerator pedal (accelerator opening) by the driver. The brake pedal sensor 240 detects the amount of depression of the brake pedal by the driver.

  It is preferable that all data acquired by the travel information acquisition unit 200 is stored in the storage unit 710 of the recorder device 700, but this is difficult due to the storage capacity of the storage unit 710 and the like. In such a case, at least the vehicle speed data obtained from the vehicle speed sensor 210 is configured to be stored in the storage unit 710.

The vehicle periphery information acquisition unit 400 is configured to acquire information on the outside of the vehicle 10 and the like around the vehicle 10, and in this embodiment, the stereo camera unit 420 that can image the front side of the vehicle 10 and the sound around the vehicle 10 A sound collection unit 430 that can be picked up is provided. In the present embodiment, the stereo camera unit 420 is provided so as to photograph only the front of the vehicle 10. However, the stereo camera unit 420 is configured so that more camera units are mounted and the rear of the vehicle 10 is photographed in addition to the front. Alternatively, it may be provided on all four sides of the vehicle 10 so as to capture the entire field of view of the vehicle 10 in the horizontal direction. The stereo camera unit 420 is capable of shooting a stereo moving image, and further, the stereo camera unit 42.
Based on the shooting data acquired at 0, the ECU 100 performs image analysis so that the distance between the shot object and the stereo camera unit 420 can be calculated. Further, the stereo moving image data acquired by the stereo camera unit 420 and the audio data collected by the sound collecting unit 430 are stored in the storage unit 710 of the recorder device 700 together with the time data measured by the time measuring unit 120. Remembered.

  The vehicle-to-vehicle communication unit 510 in the communication unit 500 is a unit for performing communication between vehicles that are relatively close to each other by wireless packet communication. The inter-vehicle communication unit 510 is transmitted from a vehicle ID storage unit 511 that stores a vehicle ID used for specifying a transmission source when performing communication, and a vehicle that exists in the vicinity and has established a communication connection. And a communication management buffer 512 for temporarily pooling the packet data. The vehicle ID stored in the vehicle ID storage unit 511 is unique to each vehicle.

  FIG. 3 is a diagram showing an example of packet data transmitted and received by the vehicle-to-vehicle communication unit 510 in the recording system according to the first embodiment of the present invention. FIG. 3A shows a packet used for periodic communication, and FIG. 3B shows a packet used when the recording system transmits a record storage request.

  The regular communication packet includes, for example, data of items such as “packet number”, “transmission source vehicle ID information”, “position information”, “speed information”, “vector information”, “recorder device ID information”. It is.

  The “packet number” in the regular communication packet is data for specifying a packet used for specifying the continuity of the packet, and the “transmission source vehicle ID information” is the vehicle ID in the inter-vehicle communication unit 510 of the transmission source. ID data stored in the storage unit 511, “position information” is coordinate data related to the vehicle position acquired by the high-accuracy GPS position information acquisition unit 811, and “speed information” is acquired by the vehicle speed sensor 210. The “vector information” is data related to the traveling direction of the vehicle determined by the steering sensor 220 and the navigation system unit 800, and the “recorder device ID information” is the recorder device mounted on the vehicle. The ID data stored in the 700 recorder device ID storage unit 720 Is another.

  In addition, the record storage request packet includes data of items such as “packet number”, “transmission source vehicle ID information”, “transmission destination vehicle ID”, and “storage request recorder device ID information”. The “packet number” in the record storage request packet is data for specifying a packet used for specifying the continuity of the packet, and the “transmission source vehicle ID information” is the vehicle in the vehicle-to-vehicle communication unit 510 of the transmission source. ID data stored in the ID storage unit 511. “Destination vehicle ID information” is ID data stored in the vehicle ID storage unit 511 in the vehicle-to-vehicle communication unit 510 of the transmission destination. The “device ID information” is ID data stored in the recorder device ID storage unit 720 of the recorder device 700 that is the storage request destination.

  The recorder device 700 includes time data acquired by the time measuring unit 120 in the ECU 100, data related to the vehicle driving situation and driving situation obtained from the driving information acquisition unit 200, and the stereo camera unit 420 of the vehicle surrounding information acquisition unit 400. Is a device for recording in a time series the stereo image data acquired by the sound recording unit 430 and the audio data acquired by the sound collection unit 430.

The storage unit 710 in the recorder device 700 is composed of, for example, a rewritable nonvolatile memory such as EEPROM or FlashMemory, and stores each data as described above. However, since the capacity of the storage unit 710 is finite, when the latest data is acquired, the oldest data is used so as to be discarded. Therefore, when an accident occurs or when an accident is expected, a record storage request command is issued to the recorder device 700 and control is performed so that data for a predetermined period is stored without being discarded. Let The recorder device ID storage unit 720 of the recorder device 700 is an identification ID for each recorder device 700. The information stored in the recorder device 700 can identify the situation of the accident, the cause of the accident, and the like by performing a simulation analysis with a personal computer, for example, and can be a powerful information source for accident verification. is there.

  The navigation system unit 800 includes a navigation system 810 and a navigation system database 820 such as map information referred to by the navigation system 810. The navigation system 810 can acquire the current position information of the vehicle by using a high-accuracy GPS position information acquisition unit 811 that receives a GPS signal from a GPS satellite and calculates its own position coordinate data. In the recording system of the present invention, it is preferable to use highly accurate GPS positioning in order to acquire position information. In the recording system of the present invention, road information, facility information, and the like are stored in the navigation system database 820. Road type information (general roads, expressways, etc.) is provided in the road information. It is preferable. Further, it is preferable that the map data of the navigation system database 820 includes area division data indicating whether it is a suburb where speed can be obtained or whether it is a city center where speed is limited. By appropriately changing the “reference distance” described later based on such road type information and area classification data, the range including the other vehicle that is the destination to which the record storage request is transmitted can be changed as appropriate. Is possible.

  Next, processing and operations of the recording system according to the present embodiment configured as described above will be described with reference to flowcharts. FIG. 4 is a diagram showing a flowchart of processing by the recording system according to the first embodiment of the present invention. The flowchart shown in FIG. 4 is an individual process of the recording system mounted on each vehicle, and the process according to this flowchart is performed in each vehicle.

  In FIG. 4, when an engine and a motor (both not shown) of the vehicle 10 are activated, the process is started in step S100, and then the process proceeds to step S101. The packet data for periodic packet communication shown in FIG. 4 is generated, and processing for transmitting the generated periodic packet from the communication unit 500 is executed.

  In the next step S102, a subroutine of ID information acquisition processing is executed. This subroutine will be described with reference to another drawing. FIG. 5 is a flowchart of an ID information acquisition process subroutine in the recording system according to the first embodiment of the present invention.

  In FIG. 5, when a subroutine of ID information acquisition processing is started in step S200, the process proceeds to step S201, where the position information of the host vehicle is acquired from the high-accuracy GPS position information acquisition unit 811 in the navigation system unit 800. In a succeeding step S202, it is determined whether or not there is packet data of a vehicle for which a communication connection is currently established in the communication management buffer 512 of the inter-vehicle communication unit 510. If the communication management buffer 512 is in the null state and the determination in step S202 is NO, the process proceeds to step S208, the acquired ID information is not present, the process proceeds to step S209, and the process returns to the original routine.

On the other hand, if there is packet data of a vehicle for which a communication connection has been established in the communication management buffer 512, the determination is YES and the process proceeds to step S203, where the latest packet data for one vehicle is acquired from the communication management buffer 512. To do. In step S204, the separation distance between the vehicles is calculated from the position information of the host vehicle and the position information of other vehicles obtained from the packet data acquired in step S203.

  In step S205, it is determined whether (reference distance) ≧ (separation distance) is satisfied. Here, the reference distance is a predetermined distance. If the vehicle A and the vehicle B are within the reference distance, and the vehicle A has an accident, the reference distance is set so that the recorder device 700 of the vehicle B is likely to record this accident to some extent. Yes. This reference distance is the road type information (general road, highway, etc.) on which the vehicle travels, or the area division data indicating whether it is a suburb where speed can be output or whether it is a city center where speed is limited. Can be set as appropriate. By changing the reference distance according to the traveling road and the traveling environment, it is possible to transmit a record storage request to a more appropriate other vehicle. In addition, since the surrounding vehicles can be selected based on the ID information and the position information acquired from the transmitted packets, the collision possibility calculation process described later is performed on the surrounding vehicles considered to be necessary with these information. It will be possible.

  When the determination in step S205 is YES, the process proceeds to step S206, and ID information of the recorder device 700 of the vehicle is acquired. On the other hand, if the determination in step S205 is no, step S206 is skipped.

  In step S207, it is determined whether or not processing has been performed for all vehicle IDs for which communication connections are currently established. When this determination is NO, the process returns to step S203 to process the next different vehicle ID, and when the determination is YES, the process proceeds to step S209 and returns to the original routine.

  Now, returning to the main routine of FIG. 4, in step S103, a subroutine for collision possibility calculation processing is executed. This subroutine will be described with reference to another drawing. FIG. 6 is a flowchart of a subroutine for collision possibility calculation processing in the recording system according to the first embodiment of the present invention.

  In FIG. 6, when the subroutine of the collision possibility calculation process starts in step S300, subsequently, in step S301, the vehicle speed sensor 210, the steering sensor 220, the accelerator opening sensor 230, and the brake in the travel information acquisition unit 200. The position of the host vehicle after X seconds, which is a predetermined time, is calculated from each data acquired from the pedal sensor 240.

  In subsequent step S302, the position of the other vehicle after X seconds is calculated from the information related to the other vehicle obtained from the stereo camera unit 420 and the inter-vehicle communication unit 510. Here, the calculation load can be reduced by limiting the other vehicles to be calculated to the closest vehicles among the vehicles recognized by the stereo camera unit 420.

  In the next step S303, an index of “possibility of collision” is calculated by (possibility of collision) = (inverse number of distance between own vehicle calculation position and other vehicle calculation position). The higher the value of the index indicating the possibility of collision, the greater the possibility of collision. In step S304, the process returns to the main routine.

Now, returning to the main routine of FIG. 4, in step S104, a subroutine of the save request packet check process is executed. This subroutine will be described with reference to another drawing. FIG. 7 is a flowchart of a storage request packet check processing subroutine in the recording system according to the first embodiment of the present invention.

  In FIG. 7, when the storage request packet check process is started in step S400, in the next step S401, a packet (as shown in FIG. 3B) in which the own vehicle (ID) is designated as the transmission destination ID. ) Is received. If the determination in step S401 is yes, the process proceeds to step S402. If the determination is no, the process proceeds to step S404 and returns.

  In step S402, it is determined whether or not there is a record storage request for the ID of the recorder device 700 mounted on the host vehicle in the packet (shown in FIG. 3B) destined for the host vehicle. When the determination is YES, the process proceeds to step S403, and the recording / storing process is performed by the recorder device 700. When the determination is NO, the process proceeds to step S404, and the process returns.

  Now, returning to the main routine of FIG. 4, in step S105, it is determined whether or not the possibility of collision is a predetermined value or more. If the determination in step S105 is no, the process proceeds to step S107.

  On the other hand, when the determination in step S105 is YES, there is a high possibility that the host vehicle will collide with another vehicle, so the process proceeds to step S106, and a record storage request is sent to the recorder device 700 of the vehicle of ID acquired in step S102. Send the packet. The packet generated by the ECU 100 at this time is shown in FIG. 3B, and a record storage request is sent to the recorder device 700 of another vehicle existing within the reference distance by transmitting this packet from the communication unit 500. I do.

  In step S107, it is determined whether or not an unillustrated engine or motor has been stopped. When this determination is NO, the process returns to step S101. On the other hand, when the determination is YES, the process proceeds to step S108 and the process is terminated.

  A specific example of how the recording system according to the present embodiment as described above operates will be described. In the traffic situation as shown in FIG. 8, the recording system according to the present embodiment is mounted on the vehicles 1 to 5, and the communication connection for inter-vehicle communication is established by each inter-vehicle communication unit 510. Suppose you are.

  Here, a case where an accident between the vehicle 1 and the vehicle 2 is expected will be described. In such a case, since the possibility of collision in the recording system mounted on the vehicle 1 is equal to or greater than a predetermined value, the vehicle 1 is compared with the recorder devices 700 of the vehicles 2, 3 and 4 existing within the reference distance. A record storage request is transmitted, and the recorder device 700 of these vehicles is processed so that data from a predetermined time before is stored.

  Further, since the possibility of collision also exceeds a predetermined value in the recording system mounted on the vehicle 2, the vehicle 2 records and stores it in the recorder devices 700 of the vehicles 1, 3 and 5 existing within the reference distance. A request is transmitted and the recorder device 700 of these vehicles is processed so that data from a predetermined time before is stored.

  As described above, in the recording system according to the embodiment of the present invention, the possibility of collision is calculated, it is determined whether the possibility of collision is a predetermined value or more, and the recorder of another vehicle is determined based on the determination result. Since the record storage request is transmitted to the apparatus 700, it is possible to receive a record storage request that is a trigger for data storage before hardware such as the communication unit 500 is damaged due to an accidental collision. Accident data collection accuracy is improved compared to the past.

  Next, another embodiment of the present invention will be described. In the previous second embodiment, an inter-vehicle communication system is used as the communication unit 500, and the recording and storage request is made to the recorder device 700 through communication between vehicles. In the second embodiment, as the communication unit 500, one that communicates with the center server is used, and each vehicle transmits the respective vehicle data to the center server in a regular communication packet. This is received, the possibility of collision is calculated based on this, and a record storage request is transmitted to each vehicle (the recorder device 700) as necessary. The following description will be made with reference to the drawings with a focus on differences from the previous embodiment.

  FIG. 9 shows an example of data transmission / reception and processing in the recording system according to the second embodiment for the vehicle and the center server. Here, the vehicles 1 to 5 shown in FIG. 9 are the same as those shown in FIG. 8, and a communication example is shown in the same situation as FIG. The center server is configured to receive periodic communication packet data from each vehicle to grasp the status of each vehicle, and to transmit packet communication data such as a record storage request to each vehicle as necessary. It is what is done.

  As shown in FIG. 9, during normal times, (0) vehicles 1 to 5 transmit periodic communication packets to the center server. Here, for example, when it is found from the packet data that the center server raises from each vehicle that (1) the possibility of a collision between the vehicle 1 and the vehicle 2 exceeds a predetermined value, (2) the vehicle 1 A vehicle within a reference distance from the vehicle 2 is specified, and (3) a record storage request packet is transmitted to the specified vehicle.

  FIG. 10 is a diagram showing an example of packet data used for transmission / reception between the vehicle and the center server in the recording system according to the second embodiment of the present invention. FIG. 10A shows a packet used for periodic communication, and FIG. 10B shows a packet used when the recording system transmits a record storage request.

  The periodic communication packet includes, for example, “packet number”, “source vehicle ID information”, “position information”, “speed information”, “vector information”, “imaging information”, “recorder device ID information”, and the like. Contains item data.

  The “packet number” in the regular communication packet is data for specifying a packet used for specifying the continuity of the packet, and the “transmission source vehicle ID information” is the vehicle ID in the inter-vehicle communication unit 510 of the transmission source. ID data stored in the storage unit 511, “position information” is coordinate data related to the vehicle position acquired by the high-accuracy GPS position information acquisition unit 811, and “speed information” is acquired by the vehicle speed sensor 210. “Vector information” is data relating to the traveling direction of the vehicle obtained by the steering sensor 220 and the navigation system unit 800, and “shooting information” is a stereo camera acquired by the stereo camera unit 420. Image data, “Recorder ID information” is a car The ID data stored in the recorder device ID storage unit 720 of the recorder apparatus 700 mounted on.

  Further, the record / storage request packet includes data of items such as “packet number”, “destination vehicle ID”, and “storage request recorder device ID information”, for example. The “packet number” in the record storage request packet is data for specifying a packet used for specifying the continuity of the packet, and the “destination vehicle ID information” is the vehicle in the vehicle-to-vehicle communication unit 510 of the transmission destination. ID data stored in the ID storage unit 511, and “storage request recorder device ID information” is ID data stored in the recorder device ID storage unit 720 of the recorder device 700 that is the storage request destination.

  Next, operations and processing on the vehicle side and operations and processing on the center server side in the recording system in the second embodiment will be described. FIG. 11 is a diagram showing a flowchart of the vehicle-side mounting system in the recording system according to the second embodiment of the present invention.

  In FIG. 11, when an engine and a motor (both not shown) of the vehicle 10 are activated, the process is started in step S500, and then the process proceeds to step S501. The packet data for periodic packet communication shown in FIG. 4 is generated, and processing for transmitting the generated periodic packet from the communication unit 500 is executed.

  In the next step S502, a storage request packet check processing subroutine is executed. Since the subroutine described in FIG. 7 can be used, detailed description thereof is omitted.

  In step S503, it is determined whether an unillustrated engine or motor has been stopped. When this determination is NO, the process returns to step S501. On the other hand, if the determination is YES, the process proceeds to step S504 and the process is terminated.

  Next, operations and processes on the center server side in the recording system according to the second embodiment will be described. FIG. 12 is a view showing a flowchart on the center server side in the recording system according to the second embodiment of the present invention.

  In FIG. 12, when the process on the center server side is started in step S600, the process proceeds to step S601, and a process for receiving packet data transmitted from the communication unit 500 of each vehicle is executed. Subsequently, in step S602, a subroutine for collision possibility calculation processing is executed. About the subroutine of this collision possibility calculation process, the thing similar to what was demonstrated in FIG. 6 can be used, and the calculation of the collision possibility about each vehicle can be performed.

  In step S603, it is determined whether or not the possibility of collision is a predetermined value or more. If the determination in step S603 is no, the process proceeds to step S606.

  On the other hand, when the determination in step S603 is YES, since there is a high possibility that a certain vehicle A (for example, vehicle 1) will collide with another vehicle B (for example, vehicle 2), the process proceeds to step S604, and the reference distance of each vehicle A process for extracting the vehicle ID (and recorder device ID) existing in the storage ID is executed, and in step S605, a storage request packet (shown in FIG. 10B) is transmitted to the vehicle with the extracted ID. Execute.

  In step S606, it is determined whether or not all vehicle IDs have been processed. If this determination is NO, the process returns to step S601 to perform a loop. If YES, the process returns to step S600 and the series of processes is reexecuted. .

  Also in the invention according to the second embodiment of the present invention as described above, it is possible to enjoy the same effect as the previous embodiment.

  As described above, according to the recording system of the present invention, it is determined whether or not the collision possibility calculated by the collision possibility calculation unit is equal to or greater than a predetermined value, and based on the determination result, a record storage request is issued to the recorder device. Since it is transmitted, it is possible to receive a record storage request that is a trigger for data storage before hardware such as communication means is damaged due to an accident collision, which improves the accuracy of accident data collection than before. .

DESCRIPTION OF SYMBOLS 10 ... Vehicle, 100 ... ECU, 120 ... Timekeeping part, 200 ... Driving information acquisition part, 210 ... Vehicle speed sensor, 220 ... Steering sensor, 230 ... Accelerator opening sensor , 240 ... brake pedal sensor, 400 ... vehicle surrounding information acquisition unit, 420 ... stereo camera unit, 430 ... sound collection unit, 500 ... communication unit, 510 ... inter-vehicle communication unit 511 ... Vehicle ID storage unit, 512 ... Communication management buffer, 700 ... Recorder device, 710 ... Storage unit, 720 ... Recorder device ID storage unit, 800 ... Navigation system unit, 810 ... Navigation system, 811 ... High-accuracy GPS position information acquisition unit, 820 ... Database

Claims (3)

A recording system that is mounted on a vehicle and includes a plurality of recorder devices that record at least image information around the vehicle, and acquires position information of the surrounding vehicle,
ID information acquisition means for acquiring ID information of a recorder device mounted on another vehicle existing within a reference distance from the own vehicle;
A collision possibility calculating means for calculating a collision possibility of the own vehicle based on the position information of the surrounding vehicle determined from the image information and the ID information;
Determination means for determining whether or not the collision possibility calculated by the collision possibility calculation means is a predetermined value or more;
A recording system comprising: a transmission unit configured to transmit a record storage request to the recorder device having the ID acquired by the ID information acquisition unit based on a determination result by the determination unit. The recording system according to claim 1, wherein the transmission unit directly transmits a record storage request to the recorder device having the ID acquired by the ID information acquisition unit by inter-vehicle communication. The recording system according to claim 1, wherein the transmission unit transmits a record storage request to the recorder device having the ID acquired by the ID information acquisition unit via the server device.

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