JP3839708B2 - Vehicle theft detection system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle theft detection system.
[0002]
[Prior art]
Conventionally, as a vehicle antitheft device, for example, those disclosed in Japanese Patent Application Laid-Open Nos. 9-240431 and 8-268231 have been known. A conventional vehicle antitheft device is provided with means for determining an abnormal situation in the vehicle in order to inform the main station of the occurrence of an abnormal situation such as theft or destruction of the vehicle. The fact was transmitted to the main station together with necessary information such as vehicle position information.
[0003]
[Problems to be solved by the invention]
By the way, communication can be interrupted by simple methods such as transmitting jamming radio waves, covering with an electromagnetic wave protection sheet, or destroying the antenna on the vehicle side. However, with conventional devices, the driver tries to end the monitoring service. The device does not authenticate whether it is a valid driver on the main station side, and the device does not inspect the termination or invalid status of the monitoring service. There was a problem that the station did not understand, and it was useless.
[0004]
First, in Japanese Patent Application Laid-Open No. 8-268231, it is recommended that the driver perform an ending operation where it can be seen from the main station. However, since the device does not check the information input by the driver, the driver's face, etc. It is necessary to hire an operator who performs authentication.
[0005]
Next, in Japanese Patent Laid-Open No. 9-240431, whether or not the driver is a valid driver on the vehicle side and information indicating that the authentication is successful is transmitted to the main station, so that the main station is a valid driver. However, since the main station only believes in the authentication result of the vehicle side, if the criminal sends false information that the authentication was successful from the fake vehicle side device, the main station side cannot distinguish . In addition, even during monitoring services, if the criminal interferes with the transmission of information from the vehicle to the main station, the main station cannot know the occurrence of such an abnormal situation even though it can disable the vehicle. There was a problem. Further, in order for the main station to grasp the position of the vehicle, it is necessary to provide a device such as a GPS for detecting the position information of the own vehicle on the vehicle side and transmit the position information to the main station.
[0006]
The present invention has been made in view of the above-described points, and an object of the present invention is to provide a vehicle theft detection system that can prevent unauthorized release of a monitoring service.
[0007]
[Means for Solving the Problems]
A vehicle theft detection system according to the present invention is mounted on a vehicle, monitors an abnormality in the vehicle, and connects a vehicle-mounted communication device for communicating with an external main station, and a communication path. The main station communication device that communicates with the in-vehicle device and the main station communication device communicates with the in-vehicle device according to a predetermined communication procedure, monitors the abnormal situation of the vehicle, and alerts if an abnormal situation is found In a vehicle theft detection system including a main station that provides a monitoring service that issues or reports, a vehicle transmits user identification information to the main station at the time of preparation of the monitoring service, and at the end of the monitoring service, the vehicle Means for transmitting to the main station the user identification information or the release identification information uniquely corresponding to the user identification information; the user identification information received from the vehicle by the main station during the preparation of the monitoring service; Scan at the end of the from the user identification information or canceling identification information received from the vehicle, to authenticate the correct user, and means for transmitting the information to allow completion of the monitoring service to the vehicle And a means for trial communication for confirming that the vehicle has not been stolen or destroyed by frequently trying to communicate with the vehicle in accordance with a predetermined communication procedure. The communication procedure inquires about the first identification information from the in-vehicle side device, the step of determining the presence / absence and authenticity of the response of the first identification information by the in-vehicle side device, and the second from the in-vehicle side device Including a step of responding to an inquiry about identification information, wherein the communication procedure of the in-vehicle device makes an inquiry about the second identification information to the main station, and whether or not there is an answer to the second identification information from the main station, A step of determining authenticity and a step of replying to the inquiry of the first identification information from the master station, wherein the master station has successfully transmitted legitimate information including the first identification information. If you decide Equipped with an abnormal situation determination means that determines that the vehicle is in an abnormal situation when it is determined that both are not in an abnormal situation and that legitimate information has not been transmitted normally, taking out vehicles and monitoring services that interfere with communication Has a function to detect unauthorized attempts to cancel It is characterized by this.
[0009]
Ma Car The communication procedure of the loading device includes a step of transmitting the first identification information according to a predetermined communication procedure, and the communication procedure of the main station determines whether or not the vehicle-mounted device responds to the first identification information. And determining that the vehicle is not in an abnormal situation when the main station determines that the legitimate information including the first identification information is normally transmitted according to a predetermined communication procedure. It is characterized by comprising an abnormal situation judging means for judging that the vehicle is in an abnormal situation when it is judged that the vehicle has not been normally transmitted.
[0012]
Also, the in-vehicle side device is connected to or has a built-in function of an in-vehicle abnormality detection device that detects an abnormality in the vehicle. Do not send vehicle presence information To detect abnormal situations at the master station It is characterized by this.
[0013]
The in-vehicle side device includes an in-vehicle abnormality detecting means for detecting an abnormality in the vehicle, an in-vehicle camera for imaging the inside of the vehicle, and a memory for storing images of the in-vehicle camera, and the abnormality is detected in the vehicle by the in-vehicle abnormality detecting device. In this case, a means for acquiring a still image or a moving image with an in-vehicle camera and transmitting it to the main station, and after executing the transmission, if the abnormality release signal is not received within a predetermined time from the main station or an abnormality confirmation signal is received. In this case, it is determined that there is an abnormality, and means for operating the antitheft device in the vehicle is provided.
[0014]
The in-vehicle abnormality detection detecting means detects an incompatibility of the image processing apparatus that processes the image of the in-vehicle camera and detects movement, or the malfunction of the in-vehicle apparatus due to vibration, movement, or destruction of the vehicle or the in-vehicle apparatus itself. It is a sensor, a vibration sensor, a sound sensor, a tilt sensor, or a combination of these devices and sensors.
[0015]
In addition, it has an out-of-vehicle monitoring camera that can capture the vehicle stop position and transmit the image to the main station when the main station determines that the vehicle is abnormal. In addition, it has a function to acquire an abnormal video when the function of the vehicle-side equipment is invalidated It is characterized by this.
[0016]
The in-vehicle device also has means for measuring and holding the behavioral state such as the presence or absence of movement of the vehicle and transmitting it to the main station. The main station measures the vehicle position and behavioral state from the video from the outside surveillance camera. The vehicle-mounted side device provides a monitoring service based on a plurality of vehicle measurement values including a history of behavioral states and existing positions measured by the main station by imaging the wireless communicable range with an out-of-vehicle monitoring camera. Monitoring vehicle search means for searching for a vehicle measurement value that most closely matches the history of the behavioral state measured before receiving the monitoring service and transmitted to the main station when receiving the monitoring service, and stopping the vehicle to be serviced based on the searched vehicle position Vehicle position setting means for setting the position is provided.
[0017]
Furthermore, the in-vehicle device is provided with means for measuring the behavioral state such as the presence / absence of movement of the own vehicle and transmitting it to the main station, and the main station measures and holds the position and behavioral state of the vehicle from the video of the outside surveillance camera. The in-vehicle device communicates with the main station from a plurality of vehicle measurement values including a history of the behavioral state and the existing position, which are provided with vehicle measurement means and the main station measures and measures the wireless communicable range with the outside monitoring camera. Monitoring vehicle search means for searching for a vehicle measurement value that most closely matches the history of the behavioral state of the vehicle that has been transmitted to the main station sequentially, and the vehicle position to be serviced is stopped. Vehicle position setting means for setting the position is provided.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
In this example, a parking lot where various monitoring devices can be easily installed will be described as an example. However, the place where the monitoring service is provided may be on a road or a garage, and the vehicle is not only a car but also a motorcycle or a bicycle. There may be. 1 is a block diagram showing a configuration of a vehicle theft detection system according to Embodiment 1 of the present invention. As shown in FIG. 1, the vehicle 1 includes an in-vehicle device 2, an in-vehicle communication device 3, an in-vehicle camera 23 that images the inside of the vehicle, a driver (meaning a legitimate user who receives a service. There is an engine 9 having an immobilizer 90 capable of controlling operation permission from the outside, a means 8 for inputting information by a keyboard 80, an IC card 81, etc., and an in-vehicle device 2 includes a CPU 20, a memory 21, vibration And a sensor 24 for detecting sound and sound, and an image processing unit 22 that controls the in-vehicle camera 23 and functions as a sensor that detects an abnormality in the vehicle by processing an image of the camera 23.
[0019]
The main station providing the service is virtually secured on a communication network such as the Internet, which transmits the main station communication device 4, communication contents, camera video (digitalized) and camera control signals. Communication channel 5, main station side device 6, monitoring camera 7, monitor 63 for the operator on the main station side, and image memory 65 for storing images when an abnormal situation occurs inside and outside the vehicle. The CPU 20, the memory 21, and the camera 7 are controlled to include an image processing unit 22 that processes an image. Further, the main station side device 6 is also connected to a gate 11 which can control opening and closing.
[0020]
FIG. 2 is an explanatory view showing the arrangement and various areas of the main device. In FIG. 2, 10 is a stop slot of the vehicle 1, and 11 is a gate for preventing unauthorized entry of the vehicle. Reference numeral 40 denotes a communicable area of the main station communication device 4, which is further disassembled into one or more antennas 4a and a main body 4b. Reference numeral 70 denotes an area that can be imaged by the monitoring camera 7, and the area 70 can sufficiently cover the area 40 by increasing the number of monitoring cameras as needed or using a type of monitoring camera that can remotely control the camera platform. Is arranged.
[0021]
Further, in order to determine the occurrence of an abnormal situation due to the interruption of communication, if the cost permits, it is desirable to reduce the area 40 and increase the number of communication devices 4 because communication is likely to be interrupted during illegal movement of the vehicle. Note that the definition of “interruption of communication” means communication with a specific single antenna 4a that the vehicle 1 has been communicating with, or a specific antenna group that is grouped for a special reason such as adjacent communication areas. In an environment where roaming that allows communication to be continued while switching the communication partner's antenna 4a is permitted with movement, illegal movement after the vehicle stops and the monitoring service is started When a communication partner moves to another antenna or antenna group due to roaming associated with, it is considered that "communication interruption" has occurred once.
[0022]
In the figure, the configuration in which the camera 7 outputs a digital image or is converted into a digital image is shown in which the communication path 5 is shared. However, the output may be an analog image. Therefore, it is necessary to divide the communication path 5 into two or more systems of analog and digital. Needless to say, the communication path 5 may actually be a dedicated communication line instead of being virtual.
[0023]
First, the outline of the operation sequence of this example will be described in a greatly simplified manner. When the vehicle 1 enters the imaging area of the camera 7, the image processing unit 62 of the main station 6 measures the position and movement of the vehicle 1 from the image, and stores a history of measurement values. The vehicle 1 measures the movement of the vehicle with the acceleration sensor 24 and the like, and sends the history of movement to the main station 6 using the communication device 3. The main station 1 determines the position of the vehicle 1 by comparing the received history with the history measured by itself.
[0024]
In addition, the vehicle 1 transmits application information including, for example, a contract ID to the main station 6. Subsequently, the vehicle 1 and the main station 6 exchange each other's recognition codes, and thereafter try communication for requesting each other's recognition codes at a timing according to a predetermined communication procedure. If communication is impossible or the recognition code is invalid, the camera 7 is controlled to capture the position of the vehicle 1, the image is stored in the memory 65, and the operator confirms the situation on the monitor 63. . Finally, to terminate the monitoring service, send a termination request to the main station 6 with the information sent by the vehicle 1 at the time of application (or information with the same effect) and if the main station recognizes that the vehicle is not a fake vehicle The station allows the vehicle to finish.
[0025]
Next, the detailed operation of this example will be described with reference to the flowcharts shown in FIGS. Hereinafter, as an abbreviation, the main station apparatus 6 is simply referred to as the main station, and the vehicle apparatus 2 is referred to as the vehicle. First, the preparation procedure of the monitoring service will be described with reference to FIG. First, while broadcasting the presence of the monitoring service from the main station communication device 4 to the area 40 (step S301), the camera 7 and the image processing unit 62 always detect the vehicle (including the noise area) on the screen. The movement is measured, and the movement and position of each vehicle are held in the memory 61 for a predetermined time, for example, for one minute (step S302).
[0026]
Next, the vehicle measures its own movement, for example, whether or not it has stopped, or a sensor 24 such as a built-in acceleration sensor, and always holds it in the memory 21 for a predetermined time (for example, 10 seconds). When the vehicle enters the area 40 and receives and discovers the presence of the service (step S303), the application information a for receiving the service from the vehicle to the main station is stored in the movement history (travel history) in the memory 21. Together with (via the communication path 5 or the communication device 4) (step S304).
[0027]
The application information a includes a driver (user) identification code (hereinafter referred to as a user identification code), an emergency contact information, and the like that are required by the master station when canceling the monitoring service. For example, the ID or contract number stored in the keyboard 80 or IC card 81 is directly passed through the input device 8 by the driver, or is scrambled with a random number or the like instead of being directly passed, or a predetermined encryption code is used. It is input to the in-vehicle device 20 in advance or every time a monitoring service is received after encryption using a key. The encryption key is generated by a vehicle, obtained from the IC card 81 or the like, or obtained by requesting transmission from the main station.
[0028]
As the input information, instead of the keyboard 80 and the IC card 81, a device that inputs measurement values of all feature quantities that can specify an individual such as a fingerprint, a retina pattern, a face, a voice, a handwriting, or the like can be used. Further, in a contract parking lot or the like, there is a case where the contact information is known from the user identification code on the main station side, so the contact information is not necessarily required. The main station holds the application information a at least until the monitoring service is finished. In addition, in order to prevent the application information a from being intercepted, decrypted and misused, it is necessary to encrypt the application information a and transmit it, but the monitoring service uses at least the same user identification code as the decryption time. It is desirable to use a cipher having a strength longer than the time (for example, overnight, several days during travel, several years until the contract ID is changed or destroyed).
[0029]
Subsequently, the main station searches the measurement history in the memory 61 for an object that moves closest to the travel history transmitted in step S304, and sets the position of the object as a position to be monitored by the outside camera 7 (step S305). As a measuring method of the image processing unit 62, for example, a method of “vehicle counting in an outdoor parking lot” described in RTA91-21 (1991) of the Institute of Electrical Engineers of Japan report can be used.
[0030]
An example of the object search method is shown in FIG. It is assumed that the horizontal axis is a time axis, and when the travel history 193 is received, the measurement history of the three objects a to c (190, 191 and 192) is held in the memory 61. The thick line indicates the movement of each object, indicating that the time in contact with the upper broken line side is moving and the time in contact with the lower solid line is stopped. For example, 190 indicates that it appears at time t2, turns twice, and then disappears at t3. 193 has a length of 1 minute in the above example, and if the time is compared with the measurement history, the object b (191) is the closest to the travel history in this example, so the vehicle where the position of the object b should be monitored (Or a very close position).
[0031]
Note that the behavior state of the vehicle described above may be used by incorporating the speedometer output of the vehicle from the outside. In the above description, the behavior state before the vehicle enters the area 40 is transmitted to the main station when the application information is transmitted. As another method, the vehicle enters the area 40 and the application information is displayed. After transmitting, the measurement of the behavior state of the own vehicle is started, and the measurement result is continuously transmitted to the main station until it stops without being held in the memory 21 and is changed to be held in the memory 61 as a travel history in the main station. Therefore, the memory 21 on the vehicle side is not used.
[0032]
Next, returning to FIG. 3 again, since the vehicle and the main station mutually authenticate each other, the vehicle and the main station exchange each other's recognition code in advance (step S306). The recognition code is generated at random, for example, and exchanged using public key encryption communication as follows. First, in order for the vehicle to obtain a recognition code (referred to as a main station recognition code) from the main station, the vehicle generates a pair of the encryption key a and the decryption key a, and transmits the encryption key a to the main station. A recognition code is randomly generated, encrypted with the encryption key a, and transmitted to the vehicle. Upon receiving this, the vehicle decrypts it with the decryption key a to obtain a master station recognition code.
[0033]
Next, the main station obtains a recognition code (referred to as a vehicle recognition code) from the vehicle. In the same manner as described above, the main station first generates a pair of the encryption key b and the decryption key b in the vehicle, and obtains the encryption key b. When transmitted to the vehicle, the vehicle randomly generates a vehicle recognition code, encrypts it with the encryption key b, and transmits it to the main station. When the main station receives this, it decrypts it with the decryption key b to obtain a vehicle recognition code. As a result, the monitoring service is ready, and the immobilizer 90 is instructed to lock the engine 9 so that it cannot be started (step S307).
[0034]
Subsequently, the monitoring service processing loop shown in FIGS. 4 and 5 is entered. Hereinafter, description will be made by alternately using FIG. 4 showing the procedure on the main station side and FIG. 5 showing the procedure on the vehicle side. Note that the communication in the following description is also encryption communication, but the complicated description regarding the exchange of the encryption key and the decryption key is the same as described above, so that only the information to be exchanged is described.
[0035]
The main station confirms that the vehicle has not been stolen or destroyed by frequently trying to communicate with the vehicle at an appropriate timing. First, the main station waits for the above communication timing (step S401, step S402, step S403). This communication timing is usually the timing that occurs in a specified pattern in the program stored in the memory 61 (step S401), or the operator detects an abnormality through the monitor 63 from the image of the camera 7 outside the vehicle and It is when an event such as an operation (step S402) or an abnormality in the vehicle is notified by communication from the vehicle side described later (step S403).
[0036]
The communication pattern of the program may be, for example, every predetermined time (for example, at an interval of 1 minute) or random within a range of several seconds to several minutes. If random, the criminal who tries to commit a crime in the middle of communication using the long communication interval prevents the prediction of the next communication timing due to the interception of the communication, while reducing the number of communication and power This has the effect of reducing consumption and communication costs.
[0037]
Next, when the communication timing arrives, the main station requests the main station recognition code from the vehicle (step S404). The vehicle waits for a request from the main station (step S501), and does not respond as soon as the request is received, but conversely requests a vehicle identification code from the vehicle to the main station in order to authenticate the main station ( Step S502).
[0038]
The master station waits for a request from the vehicle (step S405). When the master station receives the request, it responds with a vehicle recognition code to inform that it is a legitimate master station and a new master station recognition code used for the next communication. Is generated and transmitted (step S407). The vehicle receives the vehicle identification code response from the main station (step S503), confirms that it is consistent with the code transmitted in the previous communication, authenticates the main station (step S505). The main station recognition code transmitted in the previous communication is answered to notify that the vehicle is a valid vehicle, and a new vehicle recognition code used for the next communication is generated and transmitted (step S506).
[0039]
If there is no response from the vehicle within a predetermined time in step S405 or step S408, for example, the communication state is checked based on whether or not the communication carrier signal is interrupted. If it is classified into an abnormal situation 1 indicating a communication error and communication is not possible, it is classified as a communication abnormality 1 indicating communication interruption or communication failure (step S406). If the authentication fails in step S409, the vehicle is classified as an abnormal situation 2 as an incorrect answer of the vehicle (step S409).
[0040]
In the case of an abnormal situation 1, if the procedure from step S404 to step S409 is performed again, misclassification due to a communication error can be suppressed to some extent. Further, similarly, if there is no response from the main station within a predetermined time in step S501 or step S503 on the vehicle side, the communication state is checked in the same manner as described above, and if the communication itself is possible, abnormal situation 3 is impossible. If there is, it is classified as communication abnormality 2 (step S504).
[0041]
If authentication fails in step S505, it is classified as an abnormal situation 3 as an incorrect answer from the main station. It should be noted that conventional anti-theft measures such as ringing an alarm device in the car, locking the engine start with the immobilizer 90, trying to report to the driver or the police with a mobile phone, etc. when an abnormal situation 3 or communication abnormality 2 occurs In addition, in the case of an abnormal situation 3, it is further expected that a legitimate main station will receive an abnormality report in step S403, and an abnormality report to the main station is attempted.
[0042]
Even if the criminal intercepts the communication and decodes the recognition code and tries to impersonate the main station or vehicle by preparing a fake communication device, the recognition code used for communication is updated as described above. In addition, if the next communication is already finished and the recognition code is updated again when it is decrypted, the recognition code obtained by the criminal is already invalid. Can be prevented. Since there is often a trade-off between encryption strength and the amount of information required for communication (in other words, communication cost), the encryption strength is selected so that the decryption time is longer than the average or maximum communication time interval, for example. It is desirable to do. The monitoring service is executed as described above.
[0043]
Next, referring to FIG. 6, an example of a procedure for in-vehicle monitoring in which an abnormal situation is notified to step S403 of the monitoring service and an image for checking the in-vehicle situation is transmitted will be described. First, the inside of the vehicle is always monitored for changes by the sensor 24 (step S601). The sensor is composed of a vibration sensor or a sound sensor that detects that a person has entered, the vehicle is tilted, or the in-vehicle device 2 is moved, or an in-vehicle camera 23 and an image processing unit 22. Use an image sensor to detect movement. In the figure, only the sensor built in the in-vehicle side device 2 is shown. However, an externally connected sensor installed in the vehicle and an authentication means 8 for notifying when it is illegally operated are also one of the sensors referred to in this procedure. I think.
[0044]
When an abnormal situation (abnormal situation 4) is detected by the above sensor, the in-vehicle camera 23 takes an image of the inside of the vehicle (step S602), and the image is sent to the main station together with a signal notifying the occurrence of the abnormal situation 4. Transmit (step S603). Then, it waits for a release signal from the main station until a predetermined time-out (step S604), and if it receives a release signal determined to be a false alarm at the main station, it returns to step S601 and is determined to be abnormal at the main station. If a confirmation signal is received, or if a time-out occurs, anti-theft measures such as alarm sound, notification, and engine start lock are taken.
[0045]
Next, a procedure for recording an image of the outside surveillance camera 7 using the image memory 65 will be described with reference to FIG. First, recording of the video of the camera 7 supplied through the communication path 5 is started in the image memory 65 for repeatedly overwriting and recording an image for a predetermined time (for example, 5 minutes) (step S701). Next, it waits for occurrence of abnormal situations 1 to 4 and communication abnormality 1 (step S902), and other than abnormal situation 4 occurs, or occurrence of abnormal situation 4 and the driver is not in the process of terminating the monitoring service (step S703). ), Recording to the image memory 65 is stopped and the previous image is stored so as not to be overwritten (step S704), and the vehicle monitoring camera 7 is controlled so that the position of the vehicle can be captured in more detail, and the video is again displayed. It records and saves (step S705), and cautions are urged while displaying these images to the operator on the monitor 63 (step S706).
[0046]
The operator checks the monitor to determine whether it is a false alarm or an abnormal situation (step S707). In the case of a false alarm, a release signal (step S709) is transmitted to the vehicle. When an abnormal situation occurs, an abnormality confirmation signal (step S708) is sent to the vehicle. And take measures such as alarming, reporting, and remotely closing the gate 11.
[0047]
Finally, a procedure for the driver to end the monitoring service will be described with reference to FIG. First, when the driver starts an end operation and inputs from, for example, the keyboard 80, the IC card 81, etc., as in the preparation of the monitoring service, the input device 8 outputs a release code for the master station to authenticate. To the in-vehicle device 20 (step S801). The release code is the user recognition code itself at the time of preparation or a pair code uniquely determined by pairing with the user recognition code.
[0048]
As an example of the set of user identification code sent at the time of preparation and the pair code sent at the end, the contractor ID and the password set at the time of the contract, the encrypted user input information and the decryption key for decrypting it, etc. The main station knows the pair code, or the main station can correctly restore the original information using the pair code.
[0049]
Subsequently, when the vehicle sends a release information including a release code and a master station recognition code to the main station to make an end request (step S802), the main station enters an end operation and authenticates the driver from the release code (step S803). (The vehicle is also certified). Driver authentication can be performed by confirming whether or not the release code is the same as the user recognition code itself at the time of preparation, for example. The user recognition code at the time of preparation is encrypted information, and the release code is a decryption key. In this case, it is possible to confirm whether the original information extracted by decoding the user recognition code is valid.
[0050]
If the authentication is successful, the main station transmits an end permission (together with the vehicle recognition code) to the vehicle (step S804), and the main station ends the service (step S805). When the vehicle recognizes that the end permission is sent from the main station (step S806), the vehicle unlocks the engine and ends the service (step S807). In addition, if authentication cannot be performed in step S803 or step S805, the abnormal situation 2 (master station side finds fraud) and the abnormal situation 3 (vehicle side finds fraud) occur, and the monitoring service is not terminated. Take action.
[0051]
As described above, the monitoring service is realized, and the communication for that purpose is a method of performing encryption for each communication, as in this example described using the public key method or the common key method, or It is desirable to encrypt using various encryption communication methods such as a method of encrypting the entire communication like SSL (Secure Socket Layer) used on the Internet. Since the communication range on the main station side may be narrow, a narrow range communication device called PRC (Dedicated Short Range Communication), rather than a wide range communication device such as a mobile phone base station, PHS Small-scale communication devices such as base stations, wireless LAN devices, and blue tooth devices are more suitable.
[0052]
Embodiment 2. FIG.
Next, a second embodiment is shown in FIG. The configuration is omitted because only the image processing unit 62 is omitted from FIG. The arrangement of main devices is the same as that shown in FIG. This example assumes a use environment in which the stop position of the vehicle is determined and the position information can be held on the main station side as in the contract parking lot. In addition, in this example, since the program for defining the communication procedure is uploaded from the vehicle using the “pending method for vehicle theft detection system” which is pending at the same time, the driver wants the desired communication procedure that he / she thinks is safe Can be used.
[0053]
In FIG. 9, first, the main station communication device 4 broadcasts the existence of a service toward the area 40 as in the first embodiment (step S901). When the vehicle enters the area 40 and receives and discovers the presence of the service (step S902), the vehicle transmits application information b including the driver's contract ID as a user identification code to the main station (step S903). The contract ID is input to the memory 21 in advance, or is obtained through the authentication device 8 from the keyboard 80 or the key 81.
[0054]
The master station authenticates whether it is a contractor from the application information (step S904) and ignores it unless it is a contractor. If it is a contractor, the master station obtains a contract ID from information stored in the memory 61 in advance. Use it to search and determine the parking position and emergency contact information (for example, a mobile phone number) (step S905), and resource information on the main station side for the vehicle (for example, the allocated memory amount, presence / absence and function of the outside surveillance camera, gate Or not) (step S906). When the vehicle uploads a program suitable for the resource (step S907), the program starts on both the vehicle and the main station (step S908). Thus, the subsequent operations are defined by the program. First, when the vehicle and the main station exchange their respective recognition codes as an initial setting, the preparation of the monitoring service ends.
[0055]
Next, monitoring service processing is started. In this process, a monitoring service procedure for performing bidirectional authentication may be executed as in the first embodiment. Here, a simple monitoring service in one direction will be described with reference to FIGS. In this example, the vehicle and main station programs have in advance common information regarding the timing of communication.
[0056]
First, the vehicle waits for the transmission timing specified by the program (step S521), and transmits the master station recognition code to the master station when the transmission timing is reached. On the other hand, the main station waits for communication of the vehicle (step S421), and if the main station recognition code is not obtained at the vehicle-side transmission timing specified in the program, for example, depending on whether the communication carrier signal is not interrupted If the communication state is checked and the communication itself is possible, it is classified as an abnormal situation 1 indicating an incorrect answer or communication error of the vehicle, and if it is not possible to communicate, it is classified as a communication abnormality 1 indicating communication interruption or communication failure. (Step S424).
[0057]
If the master station recognition code is received, it is authenticated whether it is a valid code (step S425). Further, as in the first embodiment, the operator discovers an abnormality from the image of the camera 7 outside the vehicle through the monitor 63 and operates the main station side device 6 (step S422), or the inside of the vehicle by communication from the vehicle side described later. Step S424 is also executed when an event such as the notification of the abnormality (step S423) occurs. In addition, the in-vehicle monitoring procedure, the out-of-vehicle monitoring procedure, and the monitoring service end procedure are the same as those in the first embodiment.
[0058]
【The invention's effect】
As described above, according to the vehicle theft detection system according to the present invention, an in-vehicle device connected to an in-vehicle communication device that is mounted on the host vehicle, monitors abnormalities in the vehicle, and communicates with an external main station. And the main station communication device that communicates with the in-vehicle side device via the communication path, and the main station communication device communicates with the in-vehicle side device according to a predetermined communication procedure, monitors the abnormal situation of the vehicle, In a vehicle theft detection system including a main station that provides a monitoring service that issues an alarm or reports when a situation is detected, a means for the vehicle to transmit user identification information to the main station at the time of preparation of the monitoring service, and monitoring At the end of the service, the vehicle transmits to the main station the user identification information or the release identification information uniquely corresponding to the user identification information, and the user received from the vehicle by the main station during the preparation of the monitoring service By providing another information and means for authenticating a correct user from the user identification information or the release identification information received from the vehicle at the end of the monitoring service, and transmitting information for permitting the vehicle to end the monitoring service, By allowing the main station to authenticate the user who operates the in-vehicle side device and permitting the release, the criminal prevents the monitoring service from being illegally released, and if the criminal tries to release the monitoring service illegally, Can be found at.
[0059]
In addition, according to the vehicle theft detection system according to another invention, the in-vehicle device connected to the in-vehicle communication device for monitoring an abnormality in the vehicle mounted on the own vehicle and communicating with the external main station, The main station communication device that communicates with the in-vehicle side device via the communication path, and the main station communication device communicates with the in-vehicle side device according to a predetermined communication procedure, monitors the abnormal situation of the vehicle, and In a vehicle theft detection system including a main station that provides a monitoring service that issues a warning or reports when it is found, a communication procedure on the main station side inquires of the in-vehicle apparatus for first identification information; A communication procedure of the in-vehicle side device, including the step of determining the presence / absence and authenticity of the response of the first identification information by the in-vehicle side device and the step of responding to the inquiry of the second identification information from the in-vehicle side device But for the main station A step of inquiring about the identification information of 2, a step of determining whether or not there is a reply of the second identification information from the main station, and a step of performing a reply to the inquiry of the first identification information from the main station When the main station determines that the legitimate information including the first identification information is normally transmitted, it determines that the vehicle is not in an abnormal situation, and the legitimate information is not transmitted normally. By providing an abnormal situation determination means that determines that the vehicle is in an abnormal situation, the in-vehicle device sends a signal as an answer to the inquiry of the main station, and the main station continues to monitor it. Even if communication is interrupted by actions such as sending jamming radio waves, covering with an electromagnetic wave protection sheet, or destroying the transmitting antenna, the main station can detect it. Further, by always confirming the identification information at the time of inquiry, it is possible to prevent the main station from impersonating the on-vehicle side device and not being aware of the abnormal situation of the vehicle at the main station. In addition, the fact that communication interruptions are immediately detected provides a deterrent effect against communication interruptions, and also prevents transmission of crime-related information that a conventional antitheft device sent from the vehicle to the main station. It becomes difficult to be done.
[0060]
In addition, according to the vehicle theft detection system according to still another invention, an in-vehicle device connected to an in-vehicle communication device that is mounted in the host vehicle and monitors an abnormality in the vehicle and communicates with an external main station; The main station communication device that communicates with the in-vehicle device via the communication path, and the main station communication device communicates with the in-vehicle device according to a predetermined communication procedure, monitors the abnormal situation of the vehicle, In a vehicle theft detection system that includes a main station that provides a monitoring service that issues an alarm or reports when an alarm is detected, the communication procedure of the in-vehicle device transmits first identification information according to a predetermined communication procedure And the communication procedure of the main station includes the step of determining the presence / absence and authenticity of the response of the first identification information by the in-vehicle device, and the main station includes the first identification information according to a predetermined communication procedure Legitimate information is normal By determining that the vehicle is not in an abnormal state when it is determined that it is transmitted, and having an abnormal state determination means that determines that the vehicle is in an abnormal state when it is determined that the legitimate information has not been transmitted normally, The in-vehicle device voluntarily transmits identification information according to a common communication procedure agreed with the main station in advance, and the main station continues to monitor it, so the criminal transmits jamming radio waves during theft. Even if communication is interrupted by actions such as covering with an electromagnetic wave protection sheet or destroying the transmitting antenna, the main station can detect it. Furthermore, by constantly checking the qualified information, it is possible to prevent the main station from impersonating the vehicle-mounted device by sending out false information so that the main station is not aware of the abnormal situation of the vehicle. In addition, the fact that communication interruptions are detected immediately demonstrates a deterrent effect against communication interruptions, and also prevents transmission of crime-related information that a conventional anti-theft device sent from the vehicle to the main station. It becomes difficult.
[0061]
Further, the communication procedure on the main station side inquires the first identification information to the in-vehicle side device, the presence / absence of the answer of the first identification information by the in-vehicle side device, and the step of judging the authenticity, A step of responding to the inquiry of the second identification information from the apparatus, wherein the communication procedure of the in-vehicle side apparatus inquires the second identification information to the main station, and the second identification from the main station Including a step of determining the presence / absence and authenticity of an information response, and a step of responding to an inquiry about the first identification information from the main station, wherein the main station has normal information including the first identification information normal By determining that the vehicle is not in an abnormal state when it is determined that the vehicle is being transmitted to the vehicle, and having an abnormal state determination unit that determines that the vehicle is in an abnormal state when it is determined that the legitimate information has not been transmitted normally. , Disruption of communication It can be stopped.
[0062]
In addition, the communication procedure of the in-vehicle device includes a step of transmitting the first identification information in accordance with a predetermined communication procedure, and the communication procedure of the main station determines whether the response of the first identification information by the in-vehicle device is true or not. Including a step of determining false, the main station determines that the vehicle is not abnormal when it determines that the legitimate information including the first identification information is normally transmitted according to a predetermined communication procedure, By providing an abnormal situation determination means that determines that the vehicle is in an abnormal situation when it is judged that the information has not been transmitted normally, interference of communication can be suppressed.
[0063]
Also, the in-vehicle side device is connected to or has a built-in function of an in-vehicle abnormality detection device that detects an abnormality in the vehicle. By not transmitting the vehicle presence information, when an abnormal situation occurs in the vehicle, the abnormal situation can be detected at the main station by preventing the vehicle information from being sent to the main station.
[0064]
The in-vehicle side device includes an in-vehicle abnormality detecting means for detecting an abnormality in the vehicle, an in-vehicle camera for imaging the inside of the vehicle, and a memory for storing images of the in-vehicle camera, and the abnormality is detected in the vehicle by the in-vehicle abnormality detecting device. In this case, a means for acquiring a still image or a moving image with an in-vehicle camera and transmitting it to the main station, and after executing the transmission, if the abnormality release signal is not received within a predetermined time from the main station or an abnormality confirmation signal is received. If a failure occurs in the vehicle, the master station side transmits an image close to the time of the failure to the main station. Can detect malfunctions and prevent malfunctions, and when communication is not possible, use only the abnormal detection result in the car by judging the abnormality using the fact of communication interference The malfunction can be prevented in comparison with the case.
[0065]
The in-vehicle abnormality detection detecting means detects an incompatibility of the image processing apparatus that processes the image of the in-vehicle camera and detects movement, or the malfunction of the in-vehicle apparatus due to vibration, movement, or destruction of the vehicle or the in-vehicle apparatus itself. By being a sensor, a vibration sensor, a sound sensor, a tilt sensor, or a combination of these devices and sensors, an abnormal situation can be detected in the vehicle.
[0066]
In addition, by providing an out-of-vehicle monitoring camera that can capture the vehicle's stop position and transmit the image to the main station when the main station determines that the vehicle is in an abnormal situation, Even when various functions of the vehicle-side equipment are invalidated, it is possible to obtain a video at the time of abnormality.
[0067]
The in-vehicle device also has means for measuring and holding the behavioral state such as the presence or absence of movement of the vehicle and transmitting it to the main station. The main station measures the vehicle position and behavioral state from the video from the outside surveillance camera. The vehicle-mounted side device provides a monitoring service based on a plurality of vehicle measurement values including a history of behavioral states and existing positions measured by the main station by imaging the wireless communicable range with an out-of-vehicle monitoring camera. Monitoring vehicle search means for searching for a vehicle measurement value that most closely matches the history of the behavioral state measured before receiving the monitoring service and transmitted to the main station when receiving the monitoring service, and stopping the vehicle to be serviced based on the searched vehicle position By providing the vehicle position setting means for setting the position, the position of the vehicle to be monitored can be grasped on the main station side without the vehicle notifying its own position.
[0068]
Furthermore, the in-vehicle device is provided with means for measuring the behavioral state such as the presence / absence of movement of the own vehicle and transmitting it to the main station, and the main station measures and holds the position and behavioral state of the vehicle from the video of the outside surveillance camera. The in-vehicle device communicates with the main station from a plurality of vehicle measurement values including a history of the behavioral state and the existing position, which are provided with vehicle measurement means and the main station measures and measures the wireless communicable range with the outside monitoring camera. Monitoring vehicle search means for searching for a vehicle measurement value that most closely matches the history of the behavioral state of the vehicle that has been transmitted to the main station sequentially, and the vehicle position to be serviced is stopped. By providing the vehicle position setting means for setting the position, the position of the vehicle to be monitored can be grasped on the main station side without the vehicle notifying its own position.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a vehicle antitheft device according to Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram showing the arrangement and various areas of the main device in FIG. 1;
FIG. 3 is a flowchart showing a monitoring service preparation procedure according to the first embodiment of the present invention.
FIG. 4 is a flowchart showing a monitoring service procedure on the main station side according to Embodiment 1 of the present invention;
FIG. 5 is a flowchart showing a monitoring service procedure on the vehicle side according to the first embodiment of the present invention.
FIG. 6 is a flowchart showing an in-vehicle monitoring procedure on the vehicle side according to Embodiment 1 of the present invention.
FIG. 7 is a flowchart showing an out-of-vehicle monitoring procedure on the main station side according to Embodiment 1 of the present invention.
FIG. 8 is a flowchart showing a monitoring service ending procedure according to the first embodiment of the present invention.
FIG. 9 is a flowchart showing a monitoring service preparation procedure according to the second embodiment of the present invention.
FIG. 10 is an explanatory diagram illustrating an example of an object search method.
FIG. 11 is a flowchart showing a monitoring service procedure on the main station side according to Embodiment 2 of the present invention;
FIG. 12 is a flowchart showing a monitoring service procedure on the vehicle side according to Embodiment 2 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle, 2 vehicle-mounted side apparatus, 3 vehicle-mounted side communication apparatus, 4 main station communication apparatus, 4a antenna, 4b main body, 5 communication channel, 6 main station side apparatus, 7 monitoring camera, 8 authentication means, 10 stop slot, 11 gate , 90 Immobilizer, 9 Engine, 20 CPU, 21 Memory, 22 Image processing unit, 23 Vehicle camera, 24 Sensor, 40 Communication area, 60 CPU, 61 Memory, 62 Image processing unit, 63 Monitor, 65 Image memory, 70 Imaging Possible area, 80 ID input keyboard, 81 keys, 90 immobilizer.

Claims (8)

An in-vehicle device connected to an in-vehicle communication device for monitoring an abnormality in the vehicle mounted on the own vehicle and communicating with an external main station;
The main station communication device that communicates with the in-vehicle side device via the communication path, and the main station communication device communicates with the in-vehicle side device according to a predetermined communication procedure, monitors the abnormal situation of the vehicle, and In a vehicle theft detection system including a main station that provides a monitoring service that issues an alarm or reports when it is discovered,
Means for transmitting user identification information to the main station when the vehicle is prepared for the monitoring service, and identification information for release uniquely corresponding to the user identification information or the user identification information to the main station when the vehicle is terminated And the main station authenticates with the correct user from the user identification information received from the vehicle at the time of preparation of the monitoring service and the user identification information or release identification information received from the vehicle at the end of the monitoring service, Means for transmitting information permitting the vehicle to terminate the monitoring service ,
Furthermore, it has means for trial communication to confirm that the vehicle has not been stolen or destroyed by frequently trying to communicate with the vehicle according to a predetermined communication procedure,
As the above communication procedure,
The communication procedure on the main station side inquires about the first identification information from the in-vehicle side device, the step of determining the presence / absence of authenticity of the first identification information by the in-vehicle side device, and the authenticity from the in-vehicle side device In response to the second identification information inquiry, wherein the communication procedure of the in-vehicle device makes an inquiry about the second identification information to the main station, and the second identification information from the main station Determining the presence / absence and authenticity of a response, and performing a response to the inquiry of the first identification information from the master station,
When the main station determines that the legitimate information including the first identification information is normally transmitted, the vehicle determines that the vehicle is not in an abnormal situation, and the legitimate information is not normally transmitted. Vehicle theft detection characterized by having an abnormal situation judging means for judging that the vehicle is in an abnormal situation and having the function of detecting on the main station side the taking out of the vehicle accompanied by communication interruption and the unauthorized release of the monitoring service system. The vehicle theft detection system according to claim 1,
The communication procedure of the in-vehicle device includes a step of transmitting the first identification information according to a predetermined communication procedure, and the communication procedure of the main station determines whether or not the response of the first identification information by the in-vehicle device is true or false. Including the step of determining,
When the main station determines that the legitimate information including the first identification information is normally transmitted according to a predetermined communication procedure, the main station determines that the vehicle is not in an abnormal state, and the legitimate information is not transmitted normally. A vehicle theft detection system comprising: an abnormal situation determination unit that determines that the vehicle is in an abnormal situation when it is determined. The vehicle theft detection system according to claim 1 or 2 ,
The in-vehicle side device is connected to or has a built-in function of an in-vehicle abnormality detection device that detects an abnormality in the vehicle. If an abnormality is detected in the vehicle, the vehicle is present at the main station thereafter. A vehicle theft detection system characterized by detecting an abnormal situation at a main station by not transmitting information. In the vehicle theft detection system according to claim 3 ,
The in-vehicle side device includes an in-vehicle abnormality detecting means for detecting an abnormality in the vehicle, an in-vehicle camera for imaging the inside of the vehicle, and a memory for storing images of the in-vehicle camera, and when the abnormality is detected in the vehicle by the in-vehicle abnormality detecting device. , Means for acquiring still images or moving images with the in-vehicle camera and transmitting them to the main station, and after executing the transmission, when the abnormality cancel signal is not received within a predetermined time from the main station or when the abnormality confirmation signal is received A vehicle theft detection system comprising means for operating the anti-theft device in the vehicle to determine that there is an abnormality. The vehicle theft detection system according to claim 4 ,
Vehicle abnormality detection Shitte stage detects a malfunction of the vehicle-side apparatus by the image processing apparatus, or the vehicle or vehicle-side device itself vibration or movement or breaking detecting movement by processing the image of the vehicle camera, an acceleration sensor Or a vehicle theft detection system characterized by being a vibration sensor, a sound sensor, a tilt sensor, or a combination of these devices and sensors. In the vehicle theft detection system according to any one of claims 1 to 5 ,
Imaging the stop position of the vehicle when it is determined that the vehicle of abnormal state in the main station, provided with a vehicle surroundings monitoring cameras capable of transmitting an image to the main station, abnormalities of the functions of the vehicle equipment is disabled A vehicle theft detection system further comprising a function of acquiring a time image . The vehicle theft detection system according to claim 5 ,
The in-vehicle side device measures and holds the behavioral state such as the presence or absence of movement of the own vehicle, and has means for transmitting to the main station. The main station measures the position and behavioral state of the vehicle from the image of the surveillance camera outside the vehicle. The vehicle-mounted device receives monitoring service from a plurality of vehicle measurement values including a history of behavior states and presence positions measured by the main station by imaging the wireless communicable range with an out-of-vehicle monitoring camera. Surveillance vehicle search means for searching for a vehicle measurement value that most closely matches the history of the behavior state that was measured and transmitted to the main station when receiving the monitoring service, and the searched vehicle position as the stop position of the service target vehicle A vehicle theft detection system comprising vehicle position setting means for setting. The vehicle theft detection system according to claim 5 ,
The in-vehicle device is equipped with a means to measure the behavioral state such as the presence or absence of movement of the own vehicle and transmit it to the main station. The main station measures and holds the position and behavioral state of the vehicle from the video of the outside surveillance camera. The in-vehicle device establishes communication with the main station from a plurality of vehicle measurement values including the history of the behavioral state and the presence position measured by the main station imaging and measuring the wireless communicable range with the outside surveillance camera. The monitoring vehicle search means for searching for the vehicle measurement value that most closely matches the history of the behavioral state of the vehicle that has been transmitted to the main station, and the searched vehicle position as the stop position of the vehicle to be serviced A vehicle theft detection system comprising vehicle position setting means for setting.

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