JP2012048645A - On-vehicle information communication device, roadside information communication device and communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle information communication device, a roadside information communication device and a communication system which allow a pursuer to easily keep pursuing a target vehicle, such as a suspect's car, even when facing difficulties to pursue it.SOLUTION: The on-vehicle information communication device has a pursuing state detection part for detecting whether it is difficult to pursue the target vehicle or not, and an inter-vehicle communication part for communicating with external on-vehicle information communication devices. When the pursuing state detection part detects that it is difficult to pursue the target, the inter-vehicle communication part transmits a request for information on the target vehicle, which is valid information for pursuing the vehicle, to the on-vehicle information communication devices around the pursuer's vehicle.

Description

  The present invention relates to an in-vehicle information communication apparatus used when tracking a suspected vehicle or the like.

  Conventionally, various techniques for facilitating the tracking of stolen vehicles and illegal vehicles have been proposed. For example, in the vehicle license plate recognition system disclosed in Patent Document 1, an in-vehicle device analyzes an image captured by a camera to recognize the number of a license plate currently attached to the vehicle, and the recognized plate number and When the number is different from the regular plate number, the current plate number is transmitted to the information collection center. Then, the information collection center collates the received plate number with the regular plate number, and notifies the police-related organization of the collation result by voice or the like. As a result, it can be used for tracking stolen vehicles and illegal vehicles.

JP 2003-58980 A

  Here, when a police vehicle such as a police car tracks a suspected vehicle, the policeman usually finds the suspicious vehicle and then starts tracking, but the suspected vehicle escapes at a speed, In some cases, other ordinary vehicles get in between the police vehicles to be tracked, making it difficult to track down the suspected vehicle. The technique disclosed in Patent Document 1 does not solve such a problem.

  Therefore, the present invention provides an in-vehicle information communication device, a roadside information communication device, and a communication system that can easily continue tracking even when a tracking target vehicle such as a suspected vehicle becomes difficult to track during tracking. The purpose is to provide.

In order to achieve the above object, the in-vehicle information communication device of the present invention includes a tracking state detection unit that detects whether it is difficult to track a tracking target vehicle, and an inter-vehicle communication unit that communicates with an external in-vehicle information communication device. And comprising
When the tracking state detection unit detects that tracking is difficult, the inter-vehicle communication unit is tracking information that is effective for tracking the tracking target vehicle with respect to the in-vehicle information communication device mounted on the vehicle around the host vehicle. It is set as the structure which transmits the request | requirement of object vehicle information.

  According to such a configuration, even when a tracking target vehicle such as a suspected vehicle becomes difficult to track while being tracked, the inter-vehicle communication unit is installed on a vehicle-mounted information communication device mounted on a vehicle around the own vehicle. Since a request for tracking target vehicle information, which is information effective for tracking the tracking target vehicle, is transmitted, it is possible to acquire information effective for tracking the tracking target vehicle, and the continuation of tracking can be facilitated.

  In the above configuration, the tracking state detection unit calculates a distance between the tracking target vehicle and the host vehicle, and whether the tracking target vehicle is difficult to track based on whether the calculated distance is a predetermined distance or more. It may be configured to detect whether or not.

  In any one of the configurations described above, the inter-vehicle communication unit may transmit a request for the tracking target vehicle information to a vehicle that is located in a predetermined range ahead of the host vehicle and travels toward the host vehicle. Thereby, possibility that tracking object vehicle information can be acquired increases.

  In any one of the configurations described above, the tracking target vehicle information request may include vehicle information that is information on the tracking target vehicle. As a result, the in-vehicle information communication device that has requested the tracking target vehicle information can detect the tracking target vehicle based on the vehicle information.

  Further, in this configuration, the vehicle information is analyzed by an analysis unit included in the in-vehicle information communication device based on information input by the user via the input unit or video information captured by the imaging unit provided in the own vehicle. Thus, the detected information may be used. Thus, accurate vehicle information can be input by the user and vehicle information can be automatically detected.

  Further, in any one of the above configurations, when the inter-vehicle communication unit cannot receive the tracking target vehicle information within a predetermined time after the request for the tracking target vehicle information is performed, the transmission range is expanded and the inter-vehicle distance is increased. A communication part is good also as a structure which transmits the request | requirement of the said tracking object vehicle information again. Thereby, possibility that tracking object vehicle information can be acquired by expanding a transmission range increases.

  In any one of the configurations described above, the tracking target vehicle information may be at least one of vehicle position information and video information captured by an imaging unit provided in the vehicle. Thereby, tracking can be continued based on at least one of the vehicle position information and the captured video information.

  In any of the above-described configurations, when the tracking state detection unit detects that tracking is difficult, the inter-vehicle communication unit is mounted on a vehicle that is located in a predetermined range in front of the host vehicle and travels away from the host vehicle. Alternatively, the vehicle evacuation request may be transmitted to the in-vehicle information communication device. As a result, the driver of the vehicle equipped with the in-vehicle information communication device that has received the vehicle evacuation request can evacuate the vehicle, thereby facilitating continuation of tracking.

  Further, in any one of the above configurations, a road-to-vehicle communication unit that communicates with an external roadside information communication device is provided, and when the tracking state detection unit detects that tracking is difficult, the road-to-vehicle communication unit It is good also as a structure which transmits the request | requirement of the said tracking object vehicle information with respect to this roadside information communication apparatus. Thereby, for example, it becomes possible to acquire tracking target vehicle information also from a roadside information communication device installed at an intersection or a store.

In order to achieve the above object, the in-vehicle information communication device of the present invention includes an inter-vehicle communication unit that communicates with an external in-vehicle information communication device,
The inter-vehicle communication unit is configured to transmit the tracking target vehicle information when receiving a request for tracking target vehicle information, which is information effective for tracking the tracking target vehicle.

  According to such a configuration, the tracking target vehicle information can be transmitted to the vehicle tracking the tracking target vehicle, and the continuation of the tracking can be facilitated.

  In the above configuration, the tracking target vehicle information may be at least one of own vehicle position information and video information captured by an imaging unit provided in the vehicle.

Further, in any one of the configurations described above, when the inter-vehicle communication unit receives the request for the tracking target vehicle information, the image analysis unit analyzes the video information captured by the imaging unit provided in the vehicle,
When the video analysis unit detects information on the tracking target vehicle included in the request for the tracking target vehicle information, the inter-vehicle communication unit may transmit the tracking target vehicle information.

In order to achieve the above object, the roadside information communication device of the present invention includes a road-vehicle communication unit that communicates with an external vehicle information communication device,
The road-to-vehicle communication unit is configured to transmit the tracking target vehicle information upon receiving a request for tracking target vehicle information that is information effective for tracking the tracking target vehicle.

  According to such a configuration, the tracking target vehicle information can be transmitted to the vehicle tracking the tracking target vehicle, and the continuation of the tracking can be facilitated.

  In the above configuration, the tracking target vehicle information may be at least one of apparatus position information and video information captured by an imaging unit included in the apparatus.

Further, in any one of the configurations described above, the imaging unit, and a video analysis unit that analyzes the video information captured by the imaging unit when the road-to-vehicle communication unit receives the tracking target vehicle information request,
When the video analysis unit detects the tracking target vehicle information included in the request for the tracking target vehicle information, the road-to-vehicle communication unit may transmit the tracking target vehicle information.

In order to achieve the above object, the communication system of the present invention includes a tracking state detection unit that detects whether it is difficult to track a tracking target vehicle, and a first vehicle-to-vehicle communication that communicates with an external in-vehicle information communication device. A first in-vehicle information communication device comprising a communication unit;
A second in-vehicle information communication device including a second inter-vehicle communication unit that communicates with an external in-vehicle information communication device,
When the tracking state detection unit detects that tracking is difficult, the first inter-vehicle communication unit is configured to track the tracking target vehicle with respect to the second in-vehicle information communication device via the second inter-vehicle communication unit. A request for tracking target vehicle information, which is valid information, is transmitted, and when the second inter-vehicle communication unit receives the request for tracking target vehicle information, the tracking target vehicle information is transmitted to the first in-vehicle information communication device. The configuration is as follows.

  According to such a configuration, even when it becomes difficult to track the tracking target vehicle, the first in-vehicle information communication device mounted on the tracked vehicle is tracked by the second in-vehicle information communication device. Therefore, it is possible to facilitate tracking.

  According to the present invention, it is possible to easily continue tracking even when a tracking target vehicle such as a suspected vehicle becomes difficult to track during tracking.

It is a schematic block diagram of the vehicle-mounted information communication apparatus for police vehicles which concerns on this invention. 1 is a schematic configuration diagram of an in-vehicle information communication device for a general vehicle according to the present invention. It is a flowchart regarding the process which the vehicle-mounted information communication apparatus for police vehicles which concerns on this invention performs. It is a figure which shows an example of the road condition at the time of suspect vehicle tracking. It is a figure which shows another example of the road condition at the time of suspect vehicle tracking. It is a flowchart regarding the process which the vehicle-mounted information communication apparatus for general vehicles which concerns on this invention performs. It is a figure which shows an example of the state which extended the transmission range. It is a figure which shows the example of installation of the roadside video camera apparatus which concerns on this invention. It is a schematic block diagram of the roadside video camera apparatus which concerns on this invention. It is a flowchart regarding the modification of the process which the vehicle-mounted information communication apparatus for police vehicles which concerns on this invention performs.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an in-vehicle information communication device for a police vehicle according to an embodiment of the present invention. This in-vehicle information communication device also has a map display function and a route search function according to the vehicle position.

  An in-vehicle information communication device 100 shown in FIG. 1 is mounted on a police car, and includes a current position detection unit 1, a map storage unit 2, a memory device 3, a vehicle-to-vehicle communication unit 4, a road-to-vehicle communication unit 5, and an input. A unit 6, a display unit 7, a voice notification unit 8, and a control unit 9 are provided. In addition, the video camera device 10 mounted in front of the police vehicle is connected to the control unit 9, and the antenna 11 and the antenna 12 mounted on the police vehicle are connected to the inter-vehicle communication unit 4 and the road-to-vehicle communication unit 5, respectively. .

  The current position detection unit 1 includes a GPS receiver that receives radio waves including time information from a plurality of GPS (Global Positioning System) satellites orbiting the earth, a gyro sensor that detects angular velocity, an acceleration sensor that detects acceleration, and the like. In addition to the current position of the vehicle, the traveling direction of the vehicle and the traveling speed of the vehicle are detected.

  The map storage unit 2 includes road node data including road node data whose nodes are nodes such as road junctions, road link data including road links connecting links between the nodes, and map images. Stores map information.

  The road node data includes road node numbers, position coordinates, number of connection links, branch point names, etc., and route guidance that provides route guidance such as turning left and right and straight ahead at a guide point that is a predetermined distance away from the branch point. Data and position coordinates of the guide point are stored.

Further, the road link data includes a road node number as a start point and an end point, a road type, a link length (link cost) as distance information between nodes, a required time, the number of lanes, a road width, and the like. Further, data such as bridges, tunnels, railroad crossings, tollgates, etc. are given as link attributes to the road link data. The road type is information including distinction between elevated roads and underpass roads, distinction between expressways and toll roads, distinction between national roads and prefectural roads.
The memory device 3 stores video information taken by the video camera device 10 and the like. The inter-vehicle communication unit 4 performs wireless communication with an in-vehicle information communication device for a general vehicle, which will be described later, via the antenna 11. The road-to-vehicle communication unit 5 performs wireless communication with a roadside video camera device to be described later via an antenna 12.

  The input unit 6 includes a keyboard for performing various operation inputs, various hard keys, and a touch panel.

  The display unit 7 is for displaying various images such as a map image and an optimum route image so that the user can visually recognize the image, and includes a liquid crystal display.

  The voice notification unit 8 performs various types of voice notification such as guidance notification in route guidance, and includes a speaker or the like.

  The control unit 9 is composed of a processor including a CPU and a RAM / ROM, and controls the operation of each unit of the in-vehicle information communication apparatus 100 according to a control program recorded in the ROM.

  FIG. 2 shows a schematic configuration diagram of an in-vehicle information communication device for a general vehicle according to an embodiment of the present invention. This in-vehicle information communication device also has a map display function and a route search function according to the vehicle position.

  An in-vehicle information communication device 200 shown in FIG. 2 is mounted on a general vehicle, and a current position detection unit 13, a map storage unit 14, a memory device 15, an inter-vehicle communication unit 16, an input unit 17, and a display unit 18. And a voice notification unit 19 and a control unit 20. In addition, a video camera device 21 mounted in front of a general vehicle is connected to the control unit 20, and an antenna 22 mounted on the general vehicle is connected to the inter-vehicle communication unit 16.

  Each configuration of the in-vehicle information communication device 200 is the same as that of the in-vehicle information communication device 100 described above, and thus will not be described in detail, but the inter-vehicle communication unit 16 is connected to the inter-vehicle information communication device 100 via the antenna 22. Wireless communication with the communication unit 4 is performed.

  Next, the suspect vehicle tracking assist function in the present invention will be described with reference to the flowchart shown in FIG. It is assumed that the in-vehicle information communication device 200 is mounted on the suspect vehicle as a general vehicle.

  The police officer finds the suspicious vehicle, starts tracking the suspected vehicle by the police vehicle, and the police officer inputs the suspected vehicle number information, vehicle type information, and color information at the input unit 6 of the in-vehicle information communication apparatus 100 and performs the tracking start operation. Then, the flowchart of FIG. 3 is started.

  First, in step S <b> 31, the control unit 9 transmits a position information request to a general vehicle around the police vehicle using the inter-vehicle communication unit 4. When the control unit 20 of the in-vehicle information communication device 200 mounted on a general vehicle receives the position information request via the inter-vehicle communication unit 16, the in-vehicle information indicates the position information detected by the current position detection unit 13 with respect to the police vehicle. It transmits using the vehicle-to-vehicle communication part 16 with ID which identifies the communication apparatus 200. FIG. Thereby, the position information and ID of the surrounding general vehicle are collected in the control unit 9 of the in-vehicle information communication device 100. And the control part 9 specifies ID corresponding to the positional information which belongs to the predetermined range ahead of the own vehicle among the collected positional information, and the distance with the own vehicle position becomes the minimum. Since the identified ID is the ID of the in-vehicle information communication device 200 mounted on the suspect vehicle, the suspect vehicle can be identified.

  Next, in step S32, the control unit 9 transmits a position information request using the inter-vehicle communication unit 4 with the identified ID as a transmission destination. Then, the control unit 20 included in the in-vehicle information communication device 200 with the ID receives the position information request via the inter-vehicle communication unit 16 and uses the inter-vehicle communication unit 16 for the position information detected by the current position detection unit 13. To the in-vehicle information communication apparatus 100. And the control part 9 of the vehicle-mounted information communication apparatus 100 calculates the distance between these positions based on the received positional information and the positional information detected by the present position detection part 1. FIG. That is, the distance between the suspect vehicle and the police vehicle is calculated.

  In step S33, the control unit 9 determines whether or not the calculated distance is greater than or equal to the predetermined distance. If the calculated distance is shorter than the predetermined distance (N in step S33), the process returns to step S32, and the suspect vehicle and police vehicle again. And the distance is calculated. If the calculated distance is equal to or greater than the predetermined distance (Y in step S33), the suspect vehicle is far from the police vehicle and it becomes difficult to track the suspect vehicle, and the process proceeds to step S34.

  In step S <b> 34, the control unit 9 transmits a position / direction information request to a general vehicle around the police vehicle using the inter-vehicle communication unit 4. When the control unit 20 of the in-vehicle information communication device 200 mounted on the general vehicle receives the position / direction information request via the inter-vehicle communication unit 16, the position information and direction detected by the current position detection unit 13 with respect to the police vehicle. Information is transmitted using the vehicle-to-vehicle communication unit 16 together with an ID for identifying the in-vehicle information communication device 200. Thereby, the position information, the direction information, and the ID of the surrounding general vehicle are collected in the control unit 9 of the in-vehicle information communication device 100. Then, based on the collected position information and direction information, the control unit 9 is located in a predetermined range in front of the host vehicle and corresponds to a vehicle traveling toward the host vehicle and in the predetermined range in front of the host vehicle and from the host vehicle. The ID corresponding to the vehicle traveling in the direction away is specified.

  For example, as shown in FIG. 4, when the suspected vehicle Y and the general vehicles A, B, and C travel on a road where there is no branch ahead of the police vehicle X, the vehicle travels toward the own vehicle in a predetermined range in front of the own vehicle. The vehicle that travels toward the police vehicle X from the front is the general vehicle A, and the vehicles that travel in the direction away from the host vehicle in the predetermined range ahead of the host vehicle are the general vehicles B and C and the suspected vehicle Y. It becomes.

  Further, for example, when the suspected vehicle Y and the general vehicles D to G travel on a road having a branch ahead of the police vehicle X as shown in FIG. 5, the vehicle is located in the predetermined range in front of the host vehicle and travels toward the host vehicle. In addition to the general vehicle D traveling from the front toward the police vehicle X, the vehicle to be operated is a general vehicle E traveling from the branch destination toward the police vehicle X, and is located in the predetermined range in front of the own vehicle. Vehicles traveling in a direction away from the vehicle are the general vehicles F and G and the suspect vehicle Y.

  Next, in step S35, the control unit 9 transmits the specified ID (excluding the ID specified as the suspected vehicle) corresponding to the vehicle located in the predetermined range ahead of the own vehicle and traveling toward the own vehicle. The suspected vehicle information request, which is effective information for tracking the suspected vehicle, is transmitted using the inter-vehicle communication unit 4. The suspected vehicle information request includes suspected vehicle number information, vehicle type information, and color information input by the input unit 6.

  When the control unit 20 of the in-vehicle information communication device 200 receives the suspected vehicle information request via the inter-vehicle communication unit 16, the process shown in the flowchart of FIG. 6 is started. In step S <b> 61, the control unit 20 causes the video camera device 21 to start photographing, and the photographed video information is stored in the memory device 15.

  In step S62, the control unit 20 analyzes the video information stored in the memory device 15, and has the number information of the number information, the vehicle type of the vehicle type information, and the body color of the color information included in the received suspected vehicle information request. If it can be detected (Y in step S62), the process proceeds to step S63, and the control unit 20 uses the inter-vehicle communication unit 16 using the position information detected by the current position detection unit 13 and the video information stored in the memory device 15 as suspected vehicle information. To the in-vehicle information communication apparatus 100. On the other hand, if the suspected vehicle cannot be detected (N in step S62), the process is terminated without performing information transmission (end).

  In step S35, the control unit 9 transmits the specified ID (excluding the ID specified as the suspected vehicle) corresponding to the vehicle that is located in the predetermined range ahead of the host vehicle and travels away from the host vehicle. The evacuation request is transmitted using the inter-vehicle communication unit 4. The evacuation request includes suspected vehicle number information, vehicle type information, and color information input by the input unit 6.

  When the control unit 20 of the in-vehicle information communication apparatus 200 receives the evacuation request via the inter-vehicle communication unit 16, the control unit 20 displays a evacuation instruction together with the number information, the vehicle type information, and the color information included in the received evacuation request. 18 is displayed. As a result, the driver of the general vehicle traveling in the direction away from the front of the police vehicle can confirm the retreat instruction and the number information, and the vehicle can be retreated, so that the police vehicle can easily keep track of the suspected vehicle.

  If the control unit 9 receives position information and video information via the inter-vehicle communication unit 4 within a predetermined time after making the suspected vehicle information request in step S35 (Y in step S36), the process proceeds to step S37 and the control is performed. The unit 9 causes the display unit 7 to display the position indicated by the position information superimposed on the map image. When a plurality of position information is received within a predetermined time, a plurality of positions are displayed. When the displayed position is selected by the input unit 6, the control unit 9 causes the display unit 7 to display video information corresponding to the selected position. By confirming such position display by the driver of the police vehicle, the police vehicle can be driven toward the position, and the continuation of the suspected vehicle can be facilitated.

  On the other hand, when the control unit 9 cannot receive the position information and the video information via the inter-vehicle communication unit 4 within a predetermined time after making the suspected vehicle information request in step S35 (N in step S36), step S38 is performed. The control unit 9 determines whether or not the transmission range of the inter-vehicle transmission has already been expanded. If the transmission range has not been widened yet (N in step S38), the processing of steps S34 and S35 is performed again after widening the transmission range of inter-vehicle transmission. FIG. 7 shows an example of a state where the transmission range is expanded. Here, the transmission range is expanded from S1 to S2.

  If the information can be received within the predetermined time (Y in step S36), the process proceeds to step S37, and the position display is performed. If the information cannot be received (N in step S36), the process proceeds to step S38. In step S38, since it is determined that the transmission range has already been expanded (Y in step S38), the processing ends as it is (end).

  Even if location information cannot be acquired from a general vehicle in the initial transmission range, it may be possible to acquire location information from a general vehicle by requesting suspected vehicle information by expanding the transmission range as described above. The tracking of the suspected vehicle can be facilitated.

  Next, an embodiment of the present invention using a roadside video camera device will be described below. In the present embodiment, for example, as shown in FIG. 8, it is assumed that the roadside video camera apparatus 300 is installed at an intersection or a store.

  A schematic configuration of the roadside video camera apparatus 300 is shown in FIG. As shown in FIG. 9, the roadside video camera apparatus 300 includes a photographing unit 23, a memory device 24, a road-to-vehicle communication unit 25, and a control unit 26, and the road-to-vehicle communication unit 25 has an antenna 27. Is connected. The image capturing unit 23 always captures the road condition, and the captured video information is stored in the memory device 24 while old video information is sequentially deleted from the memory device 24. The road-vehicle communication unit 25 performs wireless communication with the road-vehicle communication unit 5 of the in-vehicle information communication device 100 via the antenna 27.

  FIG. 10 shows a flowchart regarding processing of the in-vehicle information communication apparatus 100 in the embodiment using the roadside video camera apparatus. This flowchart is a modification of the flowchart of FIG. 3 described above.

  When the flowchart of FIG. 10 starts and the distance between the suspected vehicle and the host vehicle is greater than or equal to the predetermined distance in step S103 (Y in step S103), the process proceeds to step S104, and the roadside video camera device is specified together with the vehicle. Done. Specifically, the control unit 9 transmits a position information request to the roadside video camera device around the police vehicle using the road-to-vehicle communication unit 5. When the control unit 26 of the roadside video camera device 300 receives the position information request via the roadside-to-vehicle communication unit 25, the position information registered in advance with respect to the police vehicle together with the ID for identifying the roadside video camera device 300 is displayed. Transmission is performed using the communication unit 25. Thereby, the position information and ID of the surrounding roadside video camera device are collected in the control unit 9 of the in-vehicle information communication device 100. And the control part 9 specifies ID corresponding to the positional information which belongs to the vehicle front predetermined range based on the collected positional information. That is, a roadside video camera device located in a predetermined range in front of the host vehicle is specified.

  Next, in step S <b> 105, the control unit 9 transmits a suspected vehicle information request using the road-to-vehicle communication unit 5 with the ID of the identified roadside video camera device as a transmission destination. The suspected vehicle information request includes suspected vehicle number information, vehicle type information, and color information input by the input unit 6.

  Then, when the control unit 26 of the roadside video camera device 300 with the ID receives the suspected vehicle information request via the road-to-vehicle communication unit 25, the control unit 26 analyzes the video information stored in the memory device 24 and receives the suspected vehicle. If the number of the number information included in the information request, the vehicle type of the vehicle type information, and the body color of the color information can be detected, the control unit 26 uses the pre-registered position information and the video information stored in the memory device 24 as the road-to-vehicle communication unit. 25 to the in-vehicle information communication apparatus 100. On the other hand, if the suspected vehicle cannot be detected even if the video information stored in the memory device 24 is analyzed for a predetermined time, the process is terminated without transmitting the information.

  When the control unit 9 receives position information and video information via the inter-vehicle communication unit 4 or the road-to-vehicle communication unit 5 within a predetermined time after making the suspected vehicle information request in step S105 (Y in step S106), In step S107, the control unit 9 causes the display unit 7 to display the position indicated by the position information by superimposing it on the map image. When a plurality of position information is received within a predetermined time, a plurality of positions are displayed (when received from both a general vehicle and a roadside video camera device, all received positions are displayed). When the displayed position is selected by the input unit 6, the control unit 9 causes the display unit 7 to display video information corresponding to the selected position. When the driver of the police vehicle confirms the position display of such a roadside video camera device, the police vehicle can travel toward that position, and the tracking of the suspected vehicle can be facilitated.

  On the other hand, when the control unit 9 cannot receive the position information and the video information via the inter-vehicle communication unit 4 and the road-to-vehicle communication unit 5 within a predetermined time after making the suspected vehicle information request in step S105 (step S106). N), the process proceeds to step S108, and the control unit 9 determines whether or not the transmission range of the inter-vehicle transmission and the road-to-vehicle transmission has already been expanded. If the transmission range has not yet been expanded (N in step S108), the processing of steps S104 and S105 is performed again after expanding the transmission ranges of the inter-vehicle transmission and the road-to-vehicle transmission.

  If the information can be received within a predetermined time (Y in step S106), the process proceeds to step S107, and the position display is performed. If the information cannot be received (N in step S106), the process proceeds to step S108. In step S108, since it is determined that the transmission range has already been expanded (Y in step S108), the processing ends as it is (end).

  Even if the position information etc. could not be acquired from the roadside video camera device in the initial transmission range, the position information from the roadside video camera device can be obtained by expanding the transmission range of road-to-vehicle transmission as described above and making a suspected vehicle information request. Etc. can be obtained, and the tracking of the suspected vehicle can be facilitated.

  Although the embodiment of the present invention has been described above, the embodiment can be variously modified within the scope of the gist of the present invention.

  For example, in the above embodiment, the number information of the suspected vehicle is input by the user, but when the tracking start operation is performed, the control unit 9 causes the video camera device 10 to photograph the suspected vehicle and the memory device 3 captures the suspected vehicle. The video information may be stored, and the control unit 9 may analyze the stored video information to detect number information or the like. Furthermore, the number information detected in this way may be transmitted to a center such as the police headquarters.

DESCRIPTION OF SYMBOLS 1 Current position detection part 2 Map memory | storage part 3 Memory apparatus 4 Inter-vehicle communication part 5 Road-to-vehicle communication part 6 Input part 7 Display part 8 Audio | voice alerting part 9 Control part 10 Video camera apparatus 11 Antenna 12 Antenna 13 Current position detection part 14 Map Storage unit 15 Memory device 16 Inter-vehicle communication unit 17 Input unit 18 Display unit 19 Audio notification unit 20 Control unit 21 Video camera device 22 Antenna 23 Imaging unit 24 Memory device 25 Road-to-vehicle communication unit 26 Control unit 27 Antenna 100, 200 In-vehicle information Communication device 300 Roadside video camera device X Police vehicle Y Suspect vehicle AG General vehicle

Claims (16)

A tracking state detection unit that detects whether or not the tracking target vehicle is difficult to track, and an inter-vehicle communication unit that communicates with an external in-vehicle information communication device,
When the tracking state detection unit detects that tracking is difficult, the inter-vehicle communication unit is tracking information that is effective for tracking the tracking target vehicle with respect to the in-vehicle information communication device mounted on the vehicle around the host vehicle. A vehicle-mounted information communication device characterized by transmitting a request for target vehicle information.   The tracking state detection unit calculates a distance between the tracking target vehicle and the host vehicle, and detects whether it is difficult to track the tracking target vehicle based on whether the calculated distance is a predetermined distance or more. The in-vehicle information communication device according to claim 1.   The vehicle-to-vehicle communication unit transmits a request for the tracking target vehicle information to a vehicle that is located in a predetermined range in front of the host vehicle and travels toward the host vehicle. In-vehicle information communication device.   The in-vehicle information communication apparatus according to claim 1, wherein the request for tracking target vehicle information includes vehicle information that is information on the tracking target vehicle.   The vehicle information is information detected by the information input by the user via the input unit or the video information captured by the imaging unit provided in the vehicle by an analysis unit included in the in-vehicle information communication device. The in-vehicle information communication apparatus according to claim 4, wherein   When the inter-vehicle communication unit cannot receive the tracking target vehicle information within a predetermined time after the request for the tracking target vehicle information is made, the inter-vehicle communication unit re-expands the transmission target range and then the tracking target vehicle information The in-vehicle information communication apparatus according to claim 1, wherein the request is transmitted.   The tracking target vehicle information is at least one of vehicle position information and video information photographed by a photographing unit provided in the vehicle. In-vehicle information communication device.   When the tracking state detection unit detects that tracking is difficult, the vehicle-to-vehicle communication unit is positioned in a predetermined range in front of the host vehicle and the vehicle is mounted on the vehicle-mounted information communication device mounted on the vehicle traveling in the direction away from the host vehicle. The in-vehicle information communication apparatus according to any one of claims 1 to 7, wherein a save request is transmitted. A road-vehicle communication unit that communicates with an external roadside information communication device,
The road-to-vehicle communication unit transmits a request for the tracking target vehicle information to a roadside information communication device around the vehicle when the tracking state detection unit detects that tracking is difficult. The in-vehicle information communication device according to any one of claims 8 to 9. A vehicle-to-vehicle communication unit that communicates with an external in-vehicle information communication device,
The vehicle-to-vehicle communication unit transmits the tracking target vehicle information when receiving a request for tracking target vehicle information which is information effective for tracking the tracking target vehicle.   The in-vehicle information communication apparatus according to claim 10, wherein the tracking target vehicle information is at least one of own vehicle position information and video information captured by an imaging unit provided in the vehicle. When the inter-vehicle communication unit receives the request for the tracking target vehicle information, the image analysis unit analyzes the video information captured by the imaging unit provided in the vehicle,
12. The vehicle-to-vehicle communication unit transmits the tracking target vehicle information when the video analysis unit detects information on the tracking target vehicle included in the request for the tracking target vehicle information. 12. The in-vehicle information communication device according to 12. A road-vehicle communication unit that communicates with an external in-vehicle information communication device,
The road-to-vehicle communication unit is configured to transmit the tracking target vehicle information when receiving a request for tracking target vehicle information which is information effective for tracking the tracking target vehicle.   The roadside information communication apparatus according to claim 13, wherein the tracking target vehicle information is at least one of apparatus position information and video information captured by an imaging unit included in the apparatus. An imaging unit; and a video analysis unit that analyzes video information captured by the imaging unit when the road-to-vehicle communication unit receives the request for the tracking target vehicle information,
14. The road-to-vehicle communication unit transmits the tracking target vehicle information when the video analysis unit detects the tracking target vehicle information included in the tracking target vehicle information request. 14. The roadside information communication device according to 14. A first in-vehicle information communication device comprising: a tracking state detection unit that detects whether it is difficult to track a tracking target vehicle; and a first inter-vehicle communication unit that communicates with an external in-vehicle information communication device;
A second in-vehicle information communication device including a second inter-vehicle communication unit that communicates with an external in-vehicle information communication device,
When the tracking state detection unit detects that tracking is difficult, the first inter-vehicle communication unit is configured to track the tracking target vehicle with respect to the second in-vehicle information communication device via the second inter-vehicle communication unit. A request for tracking target vehicle information, which is valid information, is transmitted, and when the second inter-vehicle communication unit receives the request for tracking target vehicle information, the tracking target vehicle information is transmitted to the first in-vehicle information communication device. A communication system.

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