JP2009037468A - Vehicle detection system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect a stolen vehicle, using intervehicular narrow band radio communication, by an emergency vehicle approaching the vehicle to be investigated. <P>SOLUTION: The stolen vehicle to be investigated has a memory for storing vehicle information of the vehicle, an encrypting device for encrypting the vehicle information, and a DSRC communication device for transmitting the encrypted vehicle information to the emergency vehicle, using the narrow band radio communication, when the emergency vehicle approaches. The emergency vehicle has a memory for storing the vehicle information of the target vehicle; a DSRC communication device used for communication to the target vehicle using the narrow band radio communication, in close proximity to the vehicle; a decoder for decoding the encrypted vehicle information received from the target vehicle via the DSRC communication device; a processing means for collating the decoded vehicle information with the vehicle information stored in the memory; and a display means for displaying information about the prescribed vehicle, based on the collation result by the processing means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle detection system and method, and more particularly to a vehicle detection system and method for acquiring vehicle information from a target vehicle using narrow area wireless communication and detecting the predetermined vehicle such as a stolen vehicle. Related.

  When a police searches for a stolen vehicle, a police officer or the like confirms and verifies the license plate of the target vehicle with the naked eye based on the vehicle type and color described in the vehicle theft report.

  Conventionally, as a technique for tracking a predetermined vehicle such as a crime car or a stolen car, for example, in Patent Document 1, information such as a license plate, a vehicle type that can be easily identified by appearance when a new vehicle is registered, and a vehicle body color are used as an ID code. A technique is disclosed in which a pre-registered ID chip is mounted on a vehicle, and a vehicle with a corresponding ID code is detected by communicating with a vehicle passing in conjunction with a separately installed terminal device. Patent Document 2 discloses an information providing method for transmitting and receiving information between vehicles passing each other using narrow-area wireless communication for inter-vehicle communication.

JP 2000-91979 A JP 2004-221636 A

  However, when searching for a stolen vehicle according to the prior art, the police officer confirms the license plate of the target vehicle with the naked eye and collates the data. Moreover, when detecting the target vehicle by communicating with the ID chip of the vehicle passing in conjunction with the installed terminal device, Patent Document 1 clearly describes means for communicating with the ID chip of the traveling vehicle. Not listed.

  An object of the present invention is to provide a vehicle detection system and method that can easily search for and find a predetermined vehicle such as a stolen vehicle using narrow-area wireless communication.

A vehicle detection system according to the present invention uses a specific vehicle to detect that a target vehicle is a predetermined vehicle.
The target vehicle includes a storage means for storing vehicle information of the vehicle, an encryptor for encrypting the vehicle information, and a narrow area wireless communication with the specific vehicle when the specific vehicle approaches. A DSRC communicator for transmitting the encrypted vehicle information,
The specific vehicle includes a storage unit that stores vehicle information of a target vehicle, a DSRC communication device that communicates with the vehicle using narrow-area wireless communication when approaching the vehicle, and the DSRC communication device. A decryptor for decrypting the encrypted vehicle information received from the target vehicle, a processing means for collating the decrypted vehicle information with the vehicle information stored in the storage means, The vehicle detection system is characterized by comprising display means for displaying information relating to the predetermined vehicle as a result of collation by the processing means.
In a preferred example, the specific vehicle has communication means for communicating with a management server that manages information including vehicle information of a plurality of target vehicles, and receives the vehicle information. Vehicle information of a plurality of vehicles acquired through the storage means is stored in the storage means.

The vehicle detection system according to the present invention is a vehicle detection system that detects a predetermined vehicle to be detected using a management server that manages a plurality of vehicle information.
The target vehicle includes a storage means for storing vehicle information of the vehicle, an encryptor for encrypting the vehicle information, and a narrow area wireless communication with the specific vehicle when the specific vehicle approaches. A DSRC communicator for transmitting the encrypted vehicle information,
A plurality of terminal devices installed in a place where the vehicle passes, each of the terminal devices communicating between the storage means for storing vehicle information of the target vehicle and the vehicle passing therethrough A DSRC communication device that communicates using the DSRC communication device, a decoder that decrypts the encrypted vehicle information received from the vehicle via the DSRC communication device, the decrypted vehicle information of the vehicle, and the storage means The vehicle detection system includes a processing unit that compares the vehicle information stored in the information processing unit and a communication unit that transmits information including a result of the verification by the processing unit to the management server.

In a preferred example, the communication means receives the vehicle information related to a plurality of vehicles managed by the management server periodically or appropriately, and stores the storage means provided in the specific vehicle or the storage means provided in the terminal device. Remember.
The present invention is also grasped as a vehicle detection method realized in the vehicle detection system.

  According to the present invention, a specific vehicle such as an emergency vehicle or a fixed terminal device acquires vehicle information of a vehicle to be investigated such as a stolen vehicle using narrow area wireless communication, and stores the storage means of the specific vehicle or the fixed terminal device. By comparing with the vehicle information stored in advance, the detection of the target vehicle and the detection result can be displayed. Further, the information on the detection result can be managed by transmitting the vehicle information to the management server. As a result, it is possible to easily find a predetermined vehicle in a search such as theft by narrow-area wireless communication.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the drawings.
FIG. 1 shows a configuration of a vehicle-to-vehicle communication system using narrow area wireless communication.
This system includes DSRC communication devices 5 and 16 in which an investigation target vehicle 1 such as a stolen vehicle and an emergency vehicle 6 such as a police car are capable of narrow-range wireless communication (DSRC). 6 is a system that performs narrow-area wireless communication between the two.

The investigation target vehicle 1 includes an in-vehicle device 2 having a memory 3 and a processor (not shown), a password encryption device 4, and a DSRC communication device 5. In the memory 3, vehicle information 40 including a vehicle number, a vehicle type, an owner license number, and the like related to the vehicle as shown in FIG. 4 is stored.
The investigation target vehicle 1 encrypts the vehicle information stored in the memory 3 using the public key by the encryption device 4, and transmits the DSRC communication device to the DSRC communication device 16 of the emergency vehicle 6 located in the communication area. Data is transmitted via 5.

On the other hand, the emergency vehicle 6 includes a GPS device 7, an in-vehicle device 8 having a memory 9 and a processor 10 including buffers 91 and 92, a display unit 13, a communication device 14, a decoding device 15, and a DSRC communication device 16. Prepare.
In the buffer 92 of the memory 9, as shown in FIG. 5, the stolen vehicle information 50 including the vehicle number, the vehicle type to the owner's license number, etc., as shown in FIG. A plurality of vehicles are stored in the form of a vehicle information list 60. As will be described later, the stolen vehicle information 50 is acquired from the stolen vehicle information management server 19 (FIG. 2) via the public network 18.

The emergency vehicle 6 receives data including other vehicle information at a short distance via the DSRC communication device 16, decrypts the data using the secret key paired with the public key by the decryption device 15, 8 is stored in the buffer 91 of the memory 9. The processor 10 collates the received vehicle information with a stolen vehicle information list 60 as shown in FIG. 6 stored in the buffer 92 in advance, and detects a predetermined vehicle such as a stolen vehicle from the result.
The result detected by the processor 10 is displayed on the display unit 13. Moreover, it is transmitted to the stolen vehicle information management server 19 (FIG. 2) via the communication apparatus 14, and is accumulate | stored there. In this case, in a preferred example, information in the form of stolen vehicle detection information 70 as shown in FIG. 7, which is generated by adding current location position coordinates and current time information acquired from the GPS device 7, is transmitted.

FIG. 2 shows a communication system for an emergency vehicle using a public network.
When the stolen vehicle information (owner's name, license number, address, vehicle type, color, body number, etc.) is input from the personal computer 17 based on the theft report from the vehicle owner, the information is transmitted via the public network 18. To the stolen vehicle information management server 19. And the stolen vehicle information 50 is memorize | stored in the memory 20 in a format as shown in FIG. The stolen vehicle information 50 is transmitted from the stolen vehicle information management server 19 to the emergency vehicle 6 via the public network 18. The emergency vehicle 6 receives the information 50 via the communication device 14 and stores it in the buffer 92 in the memory 9 in the form of the stolen vehicle information list 60 shown in FIG.

FIG. 3 shows an investigation vs. vehicle detection system using a fixed terminal device using a narrow area radio.
The public network 18 to which the stolen vehicle information management server 19 is connected is connected with a plurality of fixed terminal devices 22 installed at a toll gate on a toll road and the like, and the plurality of fixed terminal devices 22 and the investigation target vehicle 1 are connected to each other. Communication is possible by narrow-range wireless communication.

Each fixed terminal device 22 includes a memory 23 having buffers 231 and 232, a processor 29, a communication device 28, a decryption device 26, and a DSRC communication device 27.
Similar to the example shown in FIG. 2, the stolen vehicle information 50 stored in the memory 20 of the stolen vehicle information management server 19 by the theft notification from the owner of the vehicle is sent to the fixed terminal device 22 via the public network 18. It is transmitted and stored in the buffer 232 of the memory 23 in the form of the stolen vehicle information list 60 shown in FIG. The new stolen vehicle information and the updated stolen vehicle information are acquired sequentially or periodically and stored in the buffer 232.

  In the investigation target vehicle 1, the vehicle information of the vehicle is stored in advance in the memory 23 as in FIG. 1. The vehicle 1 to be investigated is vehicle information of the vehicle stored in advance in the memory 3 of the in-vehicle device 2 with respect to the DSRC communication device 27 of the fixed terminal device 22 that is located in the communication area of the vehicle 1 to be investigated while traveling. Encryption is performed using the public key by the encryption device 4 and transmitted to the DSRC communication device 27 of the fixed terminal device 22 via the DSRC communication device 5.

The fixed terminal device 22 decrypts the vehicle information received by the DSRC communication device 27 by using the secret key paired with the public key by the decryption device 26 and stores it in the buffer 231 of the memory 23. The processor 29 compares the decrypted vehicle information with the stolen vehicle information stored in the buffer 232. As a result of the comparison, the stolen vehicle detection information shown in FIG. 7, which is generated from the stolen vehicle information and the information transmission source management number assigned in advance to the fixed terminal device 22 via the public network 18 when they match. 70 is transmitted to the stolen vehicle information management server 19 (FIG. 3).
The stolen vehicle information management server 19 displays the received stolen vehicle detection information from the fixed terminal device 22 on the stolen vehicle information display unit 21 to notify the discovery of the stolen vehicle.

Next, a fixed terminal device and an emergency vehicle theft vehicle information update process are demonstrated using the flowchart of FIG.
Here, A indicates stolen vehicle information input processing by the PC 17, B indicates processing of the stolen vehicle information management server 19, and C indicates processing in the fixed terminal device 22 (FIG. 3) or the emergency vehicle 6 (FIG. 2).
In the event of vehicle theft, the owner will report damage to the nearest dispatching station or police station. In the police station, the stolen vehicle information 50 is input from the personal computer 17 (S10). The input stolen vehicle information is transmitted to the stolen vehicle information management server 19 (S20).

  The stolen vehicle information management server 19 that has received the stolen vehicle information writes it in the memory 20 (S30). It is determined whether the stolen vehicle information 50 written in the memory 20 is a predetermined number M or more. As a result, if it is M or more, it is stolen to the fixed terminal device 22 or the emergency vehicle 6 once a day. The vehicle information 50 is transmitted (S40 to S50). The fixed terminal device 22 or the emergency vehicle 6 that has received the stolen vehicle information is stored in the buffer 23 in the memory 23 (in the case of the fixed terminal device 22) or the buffer 92 in the memory 9 (in the case of the emergency vehicle 6). Is written in the area of the array element number 1 by FIFO (store in the order of arrival of data, and the latest stored data is retrieved last) (S60). As a result, the latest stolen vehicle information is accumulated in the emergency vehicle 6 and the fixed terminal device 22.

Next, the stolen vehicle detection process by the fixed terminal device and the emergency vehicle will be described using the flowchart of FIG.
The fixed terminal device 22 and the emergency vehicle 6 always monitor the investigation target vehicle 1 within a range where DSRC communication is possible (S70). When the investigation target vehicle 1 is within the range where DSRC communication is possible, connection of DSRC communication is started (S80). When DSRC communication is established, a vehicle information transmission request is made to the investigation target vehicle 1 (S90 to S100). As a result, the vehicle information 40 is received from the investigation target vehicle 1 as data encrypted with the public key. When the reception of data is confirmed, a DSRC communication disconnection request is transmitted to the investigation object vehicle 1 (S110 to S120). Thereafter, the received data is decrypted with the secret key paired with the public key, and written into the buffer 231 (in the case of the fixed terminal device 22) of the memory 23 and the buffer 91 (in the case of the emergency vehicle 6) of the memory 8 (S130). ~ S140).

  With reference to the “number of stored information” in the area of the array element number “0” in the stolen vehicle information list 60, if there is stolen vehicle information, it is determined whether the vehicle number of the stolen vehicle information matches the vehicle number of the vehicle information. (S150 to S170). If they do not match, a process of monitoring the investigation object vehicle 1 in a range where DSRC communication is possible (S70) is performed. If they match, the theft vehicle detection information 70 is generated based on the matched theft vehicle information 50, the current position position coordinates acquired from the GPS 7 and the current time, and the detection result is displayed on the display unit 13 (S180) ( The data is transmitted to the emergency vehicle 6) and the stolen vehicle information management server 19 (S190). The stolen vehicle information management server 19 that has received the stolen vehicle detection information 70 displays the result on the stolen vehicle information display unit 21. The police officer tracks the stolen vehicle based on the result displayed on the display unit 13.

Next, the vehicle information transmission process of the investigation object vehicle will be described using the flowchart of FIG.
The investigation object vehicle 1 is always monitored by the fixed terminal device 22 or the emergency vehicle 6 in a range where DSRC communication is possible (S200). When the fixed terminal device 22 or the emergency vehicle 6 is within a range where DSRC communication is possible, connection of DSRC communication is started (S210). When the DSRC communication is established, it is monitored whether a vehicle information transmission request is transmitted from the fixed terminal device 22 or the emergency vehicle 6 (S220 to S230). When the vehicle information transmission request is received, the vehicle information data is read from the memory 3, and the vehicle information data is encrypted by the encryption device 4 using the public key (S240 to S250).

  Thereafter, the vehicle information 40 is transmitted (S260), and it is monitored whether a DSRC communication disconnection request is transmitted from the fixed terminal device 22 or the emergency vehicle 6 (S270). When the DSRC communication disconnection request is received, the DSRC communication is disconnected (S280). As a result, the vehicle information 40 is transmitted to the fixed terminal device 22 or the emergency vehicle 6 and the stolen vehicle can be detected.

The figure which shows the structure of the communication system between vehicles in one Embodiment. The figure which shows the structure of the communication system to the emergency vehicle using the public network in one Embodiment. The figure which shows the investigation vs. vehicle detection system by the fixed terminal device using the narrow region radio | wireless in one Embodiment. The figure which shows the structural example of the vehicle information in one Embodiment. The figure which shows the structural example of the stolen vehicle information in one Embodiment. The figure which shows the structural example of the stolen vehicle information list in one Embodiment. The figure which shows the structural example of the stolen vehicle detection information in one Embodiment. The flowchart which shows the fixed terminal device and emergency vehicle theft vehicle information update process in one Embodiment. The flowchart which shows the stolen vehicle detection process of the fixed terminal device and emergency vehicle in one Embodiment. The flowchart which shows the vehicle information transmission process of the investigation object vehicle in one Embodiment.

Explanation of symbols

1: Investigation target vehicle 2: In-vehicle device 3: Memory 4: Information encryption device 5: DSRC communication device 6: Emergency vehicle 7: GPS device 8: In-vehicle device 9: Memory 91, 92: Buffer 10: Processor 13: Display unit 14: Communication device 15: Decoding device 16: DSRC communication device 17: Personal computer (PC) 18: Public network 19: Stolen vehicle information management server 20: Memory 21: Stolen vehicle information display unit 22: Fixed terminal device 23: Memory 231 232: Buffer 26: Decoding device 27: DSRC communication device 28: Communication device 29: Processor.

Claims (7)

In a vehicle detection system for detecting that a target vehicle is a predetermined vehicle using a specific vehicle,
The target vehicle includes a storage means for storing vehicle information of the vehicle, an encryptor for encrypting the vehicle information, and a narrow area wireless communication with the specific vehicle when the specific vehicle approaches. A DSRC communicator for transmitting the encrypted vehicle information,
The specific vehicle includes a storage unit that stores vehicle information of a target vehicle, a DSRC communication device that communicates with the vehicle using narrow-area wireless communication when approaching the vehicle, and the DSRC communication device. A decryptor for decrypting the encrypted vehicle information received from the target vehicle, a processing means for collating the decrypted vehicle information with the vehicle information stored in the storage means, And a display means for displaying information relating to the predetermined vehicle as a result of collation by the processing means. The specific vehicle has communication means for communicating with a management server that manages information including vehicle information of a plurality of target vehicles and receives the vehicle information, and is acquired via the communication means. 2. The vehicle detection system according to claim 1, wherein vehicle information of a plurality of vehicles is stored in the storage means. In a vehicle detection system that detects a predetermined vehicle to be detected using a management server that manages a plurality of vehicle information,
The target vehicle includes a storage means for storing vehicle information of the vehicle, an encryptor for encrypting the vehicle information, and a narrow area wireless communication with the specific vehicle when the specific vehicle approaches. A DSRC communicator for transmitting the encrypted vehicle information,
A plurality of terminal devices installed in places where the vehicle passes, each of the terminal devices,
Storage means for storing vehicle information of a target vehicle, a DSRC communication device that communicates with the passing vehicle using narrow area wireless communication, and the cipher received from the vehicle via the DSRC communication device A decoder for decoding the converted vehicle information, a processing means for comparing the decoded vehicle information of the vehicle with the vehicle information stored in the storage means, and information including a result of the verification by the processing means And a communication means for transmitting the information to the management server. The communication unit receives the vehicle information related to a plurality of vehicles managed by the management server periodically or appropriately and stores the vehicle information in the storage unit provided in the specific vehicle or the storage unit provided in the terminal device. The vehicle detection system according to claim 2 or 3. The vehicle detection system according to any one of claims 1 to 4, wherein the predetermined vehicle is a stolen vehicle, and the specific vehicle is an emergency vehicle under the jurisdiction of the police. In a vehicle detection method for detecting that a target vehicle is a predetermined vehicle using a specific vehicle,
The target vehicle is a storage means for storing vehicle information of the vehicle, an encryption device for encrypting the vehicle information, and the encrypted vehicle using narrow area wireless communication with the specific vehicle. A DSRC communicator for communicating information, and the specific vehicle uses a narrow area wireless communication between the storage means for storing the vehicle information of the target vehicle and the vehicle approaching the vehicle A DSRC communicator that communicates; a decoder that decrypts the encrypted vehicle information received from the target vehicle via the DSRC communicator; a processing means that performs processing related to the vehicle information; and the vehicle information Display means for displaying,
When the specific vehicle approaches a target vehicle, the vehicle transmits the encrypted vehicle information to the specific vehicle using a narrow area wireless communication via a DSRC communication device;
Checking the vehicle information of the decoded vehicle acquired by the processing means with the vehicle information stored in advance in the storage means;
If the vehicle information is information related to a predetermined vehicle as a result of the verification by the processing means, the vehicle detection method includes displaying information related to the vehicle on the display means. In a vehicle detection method for detecting a predetermined vehicle to be detected using a management server that manages a plurality of vehicle information,
The target vehicle is a storage means for storing vehicle information of the vehicle, an encryption device for encrypting the vehicle information, and the encrypted vehicle using narrow area wireless communication with the specific vehicle. A plurality of terminal devices installed in places where the vehicle passes, storage means for storing vehicle information of the target vehicle, and the vehicle A DSRC communication device that communicates with the vehicle by using narrow area wireless communication and a decoder that decrypts the encrypted vehicle information received from the target vehicle via the DSRC communication device And a processing unit that performs processing related to the vehicle information, and a communication unit that performs communication with the management server,
When the specific vehicle approaches a target vehicle, the vehicle transmits the encrypted vehicle information to the specific vehicle using a narrow area wireless communication via a DSRC communication device;
Checking the vehicle information of the decoded vehicle acquired by the processing means with the vehicle information stored in advance in the storage means;
When the vehicle information is information related to a predetermined vehicle as a result of collation by the processing means, the vehicle detection method includes a step of transmitting information related to the vehicle to the management server via the communication means. Method.

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