JP2004341653A - Burglary detecting device for vehicle and its system and its method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the burglary detecting device of a vehicle for detecting the burglary of a vehicle which is not able to detect or notify any abnormal circumstance. <P>SOLUTION: Vehicles A, B, C, D, E and F are configured to carry out the positioning of relative distances by each other, and to exchange vehicle information among those peripheral vehicles. Then, any of those vehicles A, B, C, D, F refer to information from an immobilizer in the vehicle information of the vehicle E, and determines that any abnormal circumstance is generated when the vehicle E moves without any sign of the start of the engine of the vehicle E. Afterwards, the peripheral vehicles B, D and F of the vehicle E start the notification of the vehicle information of the stolen vehicle (that is, the trace of the stolen vehicle) to a burglary monitoring device 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle theft detection device, a theft detection system thereof, and a theft detection method. More specifically, a plurality of vehicles monitor the positional relationship and vehicle information of each other, so that a single vehicle can detect an abnormal situation. The present invention relates to a vehicle theft detection device, a theft detection system, and a theft detection method that enable a surrounding vehicle to detect and notify an abnormal situation even if the detection and notification cannot be performed.
[0002]
[Prior art]
In recent years, the number of stolen vehicles has increased significantly. In particular, even when the vehicle is locked, it is a serious social problem that the vehicle is stolen. For this reason, many companies including automobile manufacturers develop and sell means for preventing theft and a tracking system in the event of theft.
[0003]
For example, as a conventionally known theft detection device, a vehicle is provided with a vibration sensor, and when the vehicle is intentionally touched during monitoring, the vibration sensor detects the vibration of the vehicle, and a security company (security company) uses a wireless device. ) May notify an abnormality detection. The security company can receive the notification and know that an abnormal situation has occurred.
[0004]
However, it is impossible to track a moving stolen vehicle only by notifying the fact that the vehicle has been stolen. As a solution to this problem, there is known a theft detection device that tracks a stolen vehicle using a positioning device such as GPS (Global Positioning Systems) or gpsOne mounted on the vehicle. GPS is a system used to determine the position of a vehicle in a car navigation system or the like. The distance between a mobile station and a plurality of satellites is measured from the time required for radio waves to arrive, and the position of the mobile station is determined. , It is possible to further determine the moving direction and speed. In addition, gpsOne uses both the GPS and the mobile phone system to measure the location of the mobile terminal, and can know the location of the mobile phone with higher accuracy.
[0005]
In such a theft detection device, an area to be monitored is set, and when a vehicle goes out of the area, an abnormality detection is notified to a theft monitoring device installed in a security company as occurrence of an abnormal situation of the vehicle. When the notification from the theft detection device is input, the theft monitoring device tracks the stolen vehicle based on the position information transmitted from the vehicle. Thereby, the current position of the stolen vehicle can be monitored in order to retrieve the stolen vehicle (for example, see Patent Document 1).
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 8-13639
[Non-patent document 1]
Kiyoshi Mizui, Masatoshi Uchida, Masao Nakagawa, "Integrated System for Vehicle-to-Vehicle Communication and Ranging Using Spread Spectrum System," IEICE Transactions on Electronics (B-II), J78-B-II, 5, pp 342-349 [ May 1995)
[0008]
[Non-patent document 2]
Kiyoshi Mizui, "Vehicle-to-Vehicle Communication and Positioning Integrated System Using Spread Spectrum System", IEICE Transactions D, Vol. No. 120-10, no. 10, pp. 1111-1117 [October 2000]
[0009]
[Non-Patent Document 3]
K. Mizui, M .; Uchida, and M.S. Nakagawa, "Vehicle-to-vehicle communication & ranging system using spread spectrum technology", ELECTRONICS and COMMUNICATIONS in JAPAN, Japan. 79, No. 12, SCRIPTA TECHNICA, INC. [December 1996]
[0010]
[Problems to be solved by the invention]
However, when the monitoring side of the vehicle acquires the position information measured by GPS or gpsOne by the theft detection device mounted on the vehicle, the positioning may not be possible due to interference waves or the like. The conventional technology for tracking a stolen vehicle has a problem that the stolen vehicle cannot be tracked in such a case.
[0011]
In addition, the above-described theft detection device has a problem that when positioning cannot be performed and position information cannot be obtained, the vehicle cannot detect that the vehicle has left the set area, and cannot detect an abnormal situation of the vehicle. there were.
[0012]
Further, the above-described theft detection device has a problem in that when the position information is transmitted to the theft monitoring device, if the transmission becomes impossible due to the interference wave, the stolen vehicle cannot be tracked.
[0013]
The present invention has been made in view of such a problem, and an object of the present invention is to allow a plurality of vehicles to detect and notify an abnormal situation by monitoring the positional relationship of each other and vehicle information. It is an object of the present invention to provide a vehicle theft detection device, a theft detection system, and a theft detection method capable of detecting theft of a vehicle.
[0014]
[Means for Solving the Problems]
In order to achieve such an object, the invention according to claim 1 is a theft detection device for a peripheral vehicle mounted on a vehicle, and a communication unit that receives information about the peripheral vehicle from the peripheral vehicle; A peripheral vehicle information storage unit that stores information about the peripheral vehicle received by the communication unit; and a detection that detects an abnormal situation in the peripheral vehicle based on the information about the peripheral vehicle stored in the peripheral vehicle information storage unit. Means.
[0015]
According to a second aspect of the present invention, in the vehicle theft detecting device according to the first aspect, the vehicle further includes positioning means for obtaining position information of the surrounding vehicle, and the surrounding vehicle information storage means obtains the position information by the positioning means. The obtained position information is further stored.
[0016]
According to a third aspect of the present invention, in the vehicle theft detection device according to the second aspect, information on the surrounding vehicle and the position information on which an abnormal situation is detected by the detection unit are stored in the surrounding vehicle information storage unit. It is characterized by further comprising a notifying means for selecting and transmitting.
[0017]
According to a fourth aspect of the present invention, in the vehicle theft detecting device according to any one of the first to third aspects, the vehicle further comprises a host vehicle information storage unit for storing information about the host vehicle, and the communication unit includes The information on the own vehicle stored in the own vehicle information storage means is transmitted.
[0018]
According to a fifth aspect of the present invention, there is provided a vehicle theft detection system, wherein the vehicle theft detection device according to the fourth aspect is mounted on each of a plurality of vehicles.
[0019]
According to a sixth aspect of the present invention, in the vehicle theft detection system according to the fifth aspect, at least one of the plurality of vehicles is monitored by receiving information about the surrounding vehicle transmitted from the notifying unit. It is further characterized by further comprising a monitoring device.
[0020]
The invention according to claim 7 is a vehicle theft detection method performed by using a stolen vehicle detection device mounted on a vehicle, wherein the step of receiving information about the peripheral vehicle from a peripheral vehicle, and receiving the information. Storing information on the peripheral vehicle received in step in a storage device, and detecting an abnormal situation in the peripheral vehicle based on the information on the peripheral vehicle stored in the storage device. And
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration example of a system for detecting vehicle theft according to the present embodiment (hereinafter, referred to as “vehicle-to-vehicle theft detection and tracking system”). In FIG. 1, the vehicle-to-vehicle theft detection and tracking system is roughly composed of a vehicle-side theft detection device 1 and a theft monitoring device 9 such as a security company. The theft detection device 1 is mounted on each of the vehicles A and B, and includes a control unit 2, a positioning communication unit 3, a sensor unit 4, an own vehicle information storage unit 5, a nearby vehicle information storage unit 6, a position information acquisition unit 7, The communication unit 8 is provided.
[0022]
The position information acquisition unit 7 acquires the position information (latitude, longitude, and positioning time) of the vehicle using GPS, gpsOne, or the like.
[0023]
The sensor unit 4 acquires sensor information from a vehicle speed sensor (not shown) of the own vehicle, an immobilizer (not shown) for theft prevention, and the like, and stores these in the own vehicle information storage unit 5 as own vehicle information.
[0024]
The immobilizer is a device that prevents the engine from being started when the vehicle enters the vehicle using an illegally created duplicate key by collation using an electronic key of a computer. Common examples of the immobilizer include a key having a built-in wireless tag and a key that inhibits rotation of a cell motor by cutting a starter line or the like in conjunction with turning on / off a security system mounted on a vehicle ( A starter cut relay is also known.
[0025]
As an example, the immobilizer shown in FIG. 2 includes a transponder 202, an antenna 204, an amplifier 212, and an engine control unit (ECU) 214.
[0026]
The transponder 202 is a wireless tag that stores the ID of the ECU 214, and is embedded in a key of the vehicle. The antenna 204 is attached to a steering lock 206 into which a key 208 is inserted, and receives a signal from a wireless tag. An amplifier 212 connected to the antenna 204 transmits and receives information to and from the ECU 214. The ECU 214 is mounted on the vehicle body, monitors the engine, and manages its operating state, fuel injection amount, injection time, and the like. Specifically, the ECU 214 controls the ignition timing of the plug 216 and the valve opening time of the fuel injection valve 218.
[0027]
In the immobilizer thus configured, the ID transmitted by the transponder 202 is sent to the ECU 214 via the antenna 204 and the amplifier 212. The ECU 214 starts the engine when the received ID matches its own ID, and prohibits the operation of the engine when an illegally manufactured duplicate key is inserted.
[0028]
In addition, in the example shown in FIG. 2, the sensor unit 4 can grasp the misconduct by an ECU signal (including a signal that outputs an ignition state) output from the ECU 214.
[0029]
The positioning communication unit 3 can simultaneously perform positioning and communication by applying spread spectrum (SS) communication and the like. The positioning communication unit 3 acquires the vehicle information of the surrounding vehicle whose relative position is obtained, and determines the relative position of the surrounding vehicle with respect to the own vehicle. It is possible to obtain the position and the position information of the surrounding vehicles.
[0030]
The vehicle information includes the vehicle ID, the relative position, the sensor information, and the position information when the surrounding vehicles can perform positioning by themselves. When the vehicle cannot be located in the stolen vehicle, and when the surrounding vehicles cannot acquire the position information from the stolen vehicle, the positioning communication unit 3 of the surrounding vehicle obtains the relative distance of the stolen vehicle and obtains the position information of the stolen vehicle. Which will be described later in detail.
[0031]
The peripheral vehicle information storage unit 6 stores the vehicle information of the peripheral vehicle acquired by the positioning communication unit 3.
[0032]
The own vehicle information storage unit 5 stores sensor information from a speed sensor or an immobilizer obtained from the sensor unit 4, position information obtained by the position information obtaining unit 7, a vehicle ID, and the like. These stored own vehicle information is used for transmitting to the surrounding vehicles.
[0033]
The communication unit 8 has a function of communicating with the theft monitoring device 9, and the control unit 2 detects an abnormal situation of a nearby vehicle, and when the tracking of the stolen vehicle is necessary, the vehicle information of the stolen vehicle is monitored. 9
[0034]
The control unit 2 monitors the theft of the surrounding vehicles using the vehicle information stored in the surrounding vehicle information storage unit 6. For example, the control unit 2 refers to the information from the immobilizer, and determines that an abnormal situation has occurred if the relative distance between the host vehicle and the surrounding vehicle has changed while the engine of the surrounding vehicle is not running. Thereafter, the vehicle information of the corresponding stolen vehicle is selected from the vehicle information managed in the peripheral vehicle information storage unit 6, and the selected vehicle information is periodically notified to the theft monitoring device 9.
[0035]
The theft monitoring device 9 is an information processing device that receives the vehicle information of the stolen vehicle notified from the theft detection device 1 and tracks the stolen vehicle. In addition to the CPU, a storage device such as a ROM, a RAM, a hard disk, An input / output interface, a communication interface, and the like are connected to a system bus. Tracking of the stolen vehicle is performed by receiving peripheral vehicle information transmitted from the communication unit 8 and monitoring at least one of the plurality of vehicles. This processing is performed by the CPU reading and executing the program code of the program stored in the ROM, the hard disk, or the like.
[0036]
The positioning of the surrounding vehicles in the positioning communication unit 3 will be described. Various methods such as spread spectrum communication, ultrasonic waves, radar, and measurement of the distance between vehicles using a plurality of cameras can be used for positioning by the positioning communication unit 3.
[0037]
Non-patent literature 1, non-patent literature 2, and non-patent literature 3 have proposed distance measurement using spread spectrum communication. The outline is described below with reference to FIG.
[0038]
In the vehicles A and B running close to each other, first, the vehicle A transmits a PN signal (pseudo noise signal), which can be regarded as a key signal with a scale of the SS system, to the vehicle B. The vehicle B receives the PN signal, performs SS modulation for multiplying the PN signal by the information of the vehicle B, and sends back to the vehicle A. The vehicle A receives the information and performs SS demodulation using the PN signal of the own vehicle to obtain information on the vehicle B.
[0039]
3A shows a PN signal transmitted from the vehicle A, and FIG. 3B shows a PN signal received by the vehicle A with respect to time. The positioning communication unit 3 of the vehicle A obtains the information of the vehicle B and simultaneously measures the inter-vehicle distance between the two vehicles based on the round trip time T of the PN signal according to the same principle as that of the SS radar. Next, the round trip time T is calculated based on the difference between the transmission signal and the reception signal. Next, the round trip time T is divided by 2 to calculate a one-way time. Then, the relative distance can be calculated by multiplying the one-way time by the propagation speed of the radio wave (frequency × wavelength).
[0040]
The positioning communication unit 3 obtains the position information of the surrounding vehicle from the relative distance obtained as described above and the position information of the own vehicle obtained by GPS or the like. In the case of distance measurement using spread spectrum communication, position information can be obtained according to triangulation by GPS. In the example shown in FIG. 4, the vehicle A obtains the relative distance R1 of the vehicle B. On the other hand, similarly to the vehicles A and B, the vehicle C equipped with the theft detection device obtains the relative distance R2 of the vehicle B. Then, the vehicle A transmits the position information of the own vehicle and the relative distance R1 of the vehicle B to the vehicle C. The vehicle C determines from the information received from the vehicle A, that is, the position information of the vehicle A and the relative distance R1 of the vehicle B, and the position information of the vehicle C itself and the relative distance R2 that the vehicle B exists at the position P1 or P2. can do. Further, if the position information and the vehicle information on the vehicle B can be acquired from a plurality of peripheral vehicles, the positioning can be performed with higher accuracy by using them.
[0041]
When the relative distance of the surrounding vehicle is obtained by using the ultrasonic wave, the position information of the surrounding vehicle can be obtained by using the relative distance, the transmitting direction of the ultrasonic wave, and the position information of the own vehicle. Also, in the case of measuring the inter-vehicle distance using a radar or a plurality of cameras, the position information of the surrounding vehicles is obtained according to this.
[0042]
The position information of the peripheral vehicle determined in this way is stored in the peripheral vehicle information storage unit 6 as vehicle information.
[0043]
Next, an operation example of the inter-vehicle theft detection and tracking system according to the present embodiment will be described with reference to FIGS. 1, 5, 6, and 7. FIG. 5 shows an example of an operation performed by the inter-vehicle theft detection and tracking system when a vehicle parked in a general parking lot detects an abnormal situation. As shown in FIG. 5 (a), the vehicles A, B, C, D, E, and F equipped with the theft detection device each measure the distance by the positioning communication unit 3, and the vehicle information between neighboring vehicles. Exchange each other.
[0044]
Then, when the vehicles A, B, C, D, E, and F each refer to the information from the immobilizer in the vehicle information of the peripheral vehicle, and the vehicle moves without the engine of the peripheral vehicle being operated, an abnormal situation occurs. Judge. In the example shown in FIG. 5B, vehicles B, D, and F have detected an abnormal situation of vehicle E. Thereafter, the vehicles B, D, and F around the vehicle E start to notify the theft monitoring device 9 of the vehicle information of the stolen vehicle (track the stolen vehicle).
[0045]
FIG. 6 shows an example of an operation performed by the inter-vehicle theft detection and tracking system when a vehicle parked in parallel on the road detects an abnormal situation. As shown in FIG. 6A, vehicles A, B, and C exchange vehicle information between neighboring vehicles by distance measurement and communication in the positioning communication unit 3. Then, as shown in FIG. 6B, the vehicles A and C refer to the information from the immobilizer in the vehicle information of the vehicle B, and determine that an abnormal situation occurs when the vehicle moves without the engine of the vehicle B starting. . Thereafter, the vehicles around the vehicle B start to notify the theft monitoring device 9 of the vehicle information of the stolen vehicle (track the stolen vehicle).
[0046]
FIG. 7 shows an example of the operation of the inter-vehicle theft detection and tracking system during tracking. The vehicles A, B, C, D, E, and F located around the vehicle E respectively detect abnormal situations by referring to the vehicle information of the surrounding vehicles. In the example shown in the figure, the vehicles B, D, and F make a judgment on the vehicle E in an abnormal situation. The vehicles B, D, and F periodically communicate with each other using the positioning communication unit 3. Therefore, even if the vehicle E changes lanes or routes, another vehicle equipped with the theft detection device detects an abnormal situation and notifies the theft monitoring device 9 of the vehicle information of the stolen vehicle from the surrounding vehicles. can do.
[0047]
As described above, the preferred embodiments of the present invention have been described. However, it is needless to say that the present invention is not limited to the above-described embodiments, but can be implemented in other various forms. For example, a positioning method using only radio waves received from a plurality of base stations may be adopted instead of gps or gpsOne as a positioning method of the vehicle in the theft detection device.
[0048]
In addition, various modifications other than the above-described embodiments are possible. However, modifications are within the technical scope of the present invention as long as they are based on the technical idea described in the claims.
[0049]
【The invention's effect】
As described above, according to the present invention, even if it is not possible to detect and track an abnormal situation in a stolen vehicle, the surrounding vehicles detect an abnormal situation by exchanging vehicle information with each other. It has the effect that it is possible.
[0050]
Further, even if the stolen vehicle cannot acquire the position information, the vehicles exchange the vehicle information with each other, thereby obtaining the position information of the stolen vehicle.
[0051]
Further, even if the stolen vehicle cannot transmit the notification of the abnormal situation to the theft monitoring device, it is possible for the surrounding vehicles to transmit the notification of the abnormal situation to the theft monitoring device instead.
[0052]
In addition, even if the stolen vehicle cannot transmit the position information to the theft monitoring device, there is an effect that the surrounding vehicle can transmit the position information to the theft monitoring device instead.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an inter-vehicle theft detection and tracking system according to an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of an immobilizer according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a ranging method using spread spectrum according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a positioning method of surrounding vehicles according to an embodiment of the present invention.
FIG. 5 is a diagram showing the operation of the inter-vehicle theft detection and tracking system when a vehicle parked in a general parking lot detects an abnormal situation in one embodiment of the present invention.
FIG. 6 is a diagram illustrating an operation of the vehicle-to-vehicle theft detection and tracking system when a vehicle parked in parallel on the road detects an abnormal situation in one embodiment of the present invention.
FIG. 7 is a diagram illustrating an example of the operation of the inter-vehicle theft detection and tracking system during the tracking of a stolen vehicle according to an embodiment of the present invention.
[Explanation of symbols]
Reference Signs List 1 Theft detection device 2 Control unit 3 Positioning communication unit 4 Sensor unit 5 Own vehicle information storage unit 6 Peripheral vehicle information storage unit 7 Position information acquisition unit 8 Communication unit 9 Theft monitoring device 202 Transponder 204 Antenna 206 Steering lock 208 Key 212 Amplifier 216 Spark plug 218 Engine A, B, C, D, E, F Vehicle T Round trip time

Claims (7)

A theft detection device for a surrounding vehicle mounted on the vehicle,
Communication means for receiving information about the peripheral vehicle from the peripheral vehicle,
Peripheral vehicle information storage means for storing information about the peripheral vehicle received by the communication means;
Detecting means for detecting an abnormal situation in the surrounding vehicle based on information on the surrounding vehicle stored in the surrounding vehicle information storage means. 2. The vehicle theft detection according to claim 1, further comprising positioning means for obtaining position information of the peripheral vehicle, wherein the peripheral vehicle information storage means further stores the position information obtained by the positioning means. apparatus. 3. The vehicle theft according to claim 2, further comprising a notification unit that selects and transmits information on the peripheral vehicle and the position information from the peripheral vehicle information storage unit that have detected an abnormal situation by the detection unit. Detection device. 4. The vehicle according to claim 1, further comprising a host vehicle information storage unit configured to store information regarding the host vehicle, wherein the communication unit transmits the host vehicle information stored in the host vehicle information storage unit. A vehicle theft detection device according to any one of claims 1 to 3. A vehicle theft detection system, wherein the vehicle theft detection device according to claim 4 is mounted on each of a plurality of vehicles. 6. The vehicle theft detection system according to claim 5, further comprising a monitoring device that receives information about the peripheral vehicle transmitted from the notification unit and monitors at least one of the plurality of vehicles. A vehicle theft detection method performed using a stolen vehicle detection device mounted on a vehicle,
Receiving information about the surrounding vehicle from the surrounding vehicle;
Storing the information on the surrounding vehicle received in the receiving step in a storage device;
Detecting a stolen vehicle of the vehicle based on information about the surrounding vehicle stored in the storage device.

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