JP4382298B2 - Vehicle theft detection system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle theft detection system, and more particularly to a system for determining vehicle theft by cooperation between a terminal mounted on a vehicle and a monitoring center.
[0002]
[Prior art]
In a conventional automobile theft detection system, a terminal device mounted on an automobile detects vibrations that may occur when the vehicle is stolen with a sensor, and then determines that it is a theft based on the detection result. And when it was determined that the terminal device was stolen, the terminal device reported to the monitoring center by wireless communication. On the other hand, when stealing a car, the car is moved, and the vibration associated therewith continues for some time. Therefore, normally, it is determined that there is an abnormality because the vibration has continued for a predetermined time.
[0003]
[Problems to be solved by the invention]
The conventional car theft detection system is a terminal device installed in the car makes an abnormality determination and reports to the monitoring center, so when the terminal device is thrown out of the vehicle before making the abnormality determination, Since the monitoring center is not notified of the abnormality determination, there is a problem that the monitoring center cannot detect the theft, that is, it is a misreport.
[0004]
In addition, if the vibration duration time until the abnormality determination is shortened, it is possible to avoid such misreporting due to work, etc., on the other hand, for example, when parking in a mechanical parking lot Each time an automobile enters or leaves the vehicle, an abnormality is determined, which increases the number of false alarms.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle theft detection system that suppresses misreporting and misreporting.
[0006]
[Means for Solving the Problems]
A vehicle theft detection system according to the present invention is a vehicle theft detection system that detects theft of the vehicle at a monitoring center based on a report from a sensor terminal mounted on the vehicle to the monitoring center. A sensor unit that detects the occurrence and disappearance of vehicle vibration that may occur during vehicle theft, a transfer detection unit that detects the transfer of the sensor terminal, and an abnormal signal to the monitoring center in response to the detection of the occurrence and transfer of the vibration And a reporting unit that reports a recovery signal to the monitoring center in response to detection of the disappearance of the vibration, and starts monitoring when the monitoring center receives the abnormal signal, and counts the time when receiving the recovery signal. A time measuring unit that ends and a determination unit that determines that a theft has occurred based on a time measured value of the time measuring unit exceeding a predetermined delay time.
[0007]
According to the present invention, the theft of a vehicle such as an automobile or motorcycle is determined at the monitoring center. When a vibration that occurs during theft of a vehicle detected by the sensor terminal is detected, an abnormal signal is sent from the reporting unit to the monitoring center to notify that there is a possibility of an abnormal condition. Sends a recovery signal to notify the possibility of returning to the normal state. Here, the sensor terminal does not determine whether it is abnormal / normal, that is, whether it has been stolen. The determination is made by the monitoring center based on the received abnormality signal / recovery signal. In order to avoid false alarms, the monitoring center does not immediately determine that there is an abnormality even if an abnormality signal is received, and looks at whether the occurrence of vibration continues for a predetermined time. That is, a predetermined grace time is set from the reception of the abnormal signal until the determination is made. Basically, an abnormal state at the time of theft requires a certain degree of sustainability such as vibration due to vehicle running, door opening work or contact with the vehicle for driving operation. It is possible to suppress false alarms caused by transient events such as vibrations caused by the operation of a mechanical parking lot and events such as the approach and contact of passers-by.
[0008]
It is also conceivable that a thief discovers a sensor terminal mounted on a vehicle and throws it out of the vehicle. In the present invention, a transfer detection unit is provided to detect such abandonment, and when the transfer detection unit detects transfer from a predetermined position of the sensor terminal, the sensor unit detects the disappearance of vibration. Even if the recovery signal is not transmitted to the monitoring center, it is determined to be abnormal after a predetermined grace period. Here, the grace period is set because the relocation detection unit detects the relocation detection signal and transmits the relocation detection signal to the monitoring center even when an authorized user of the vehicle gets into the vehicle and operates the sensor terminal. This is because there are cases. Therefore, in this case, the user can perform a release operation at the sensor terminal within the grace period and transmit a release signal to the monitoring center, thereby suppressing false alarms.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a configuration of a vehicle theft detection system according to an embodiment of the present invention. This system detects a theft, and a security officer performs measures such as searching for a vehicle. A sensor terminal 2 mounted on the vehicle, a handling terminal 4 carried by the security officer, and a monitoring center 6 are provided. Connected via the network 8. Furthermore, a mobile phone base station 10 and a satellite reference station 12 are connected to the network 8. In addition, a GPS (Global Positioning System) satellite 14 is used in order for the sensor terminal 2, the coping terminal 7 and the satellite reference station 12 to acquire their own position information.
[0010]
Each of the sensor terminal 2 and the handling terminal 7 has a GPS reception function and a mobile phone communication function, acquires its own position information based on a signal from the GPS satellite 14, and wirelessly communicates with the base station 10. Communication over a line can be performed.
[0011]
The satellite reference station 12 is fixed at a predetermined position and knows its exact position. The satellite reference station 12 compares the predetermined position with its own position information obtained from the signal of the GPS satellite 14, generates correction information for the position information obtained from the signal of the GPS satellite 14, and provides it to the monitoring center 6.
[0012]
FIG. 2 is a schematic block diagram of the monitoring center 6. The monitoring center 6 is connected to the network 8 for communication, a control unit 22 for controlling each block of the monitoring center 6, and a position management unit 24 for determining the positions of the sensor terminal 2 and the countermeasure terminal 7. And a theft monitoring unit 26 that detects occurrence of theft and instructs a predetermined countermeasure, and these are connected to each other via a LAN (Local Area Network).
[0013]
The position management unit 24 is a communication unit that receives position information by GPS of the sensor terminal 2 and the handling terminal 7, position information of the base station 10 that can communicate with the sensor terminal 2 and the handling terminal 7, and correction information from the satellite reference station 12. 20 to calculate the accurate positions of the sensor terminal 2 and the countermeasure terminal 7. The calculated position information of the sensor terminal 2 and the countermeasure terminal 4 is sent to the theft monitoring unit 26.
[0014]
The theft monitoring unit 26 acquires a signal notified by the sensor terminal 2 in response to a predetermined event such as vibration via the communication unit 20, and the sensor terminal 2 is placed together with the position information from the position management unit 24. Determine the theft of a damaged vehicle. If it is determined that the theft has occurred, the theft monitoring unit 26 selects a security officer near the stolen vehicle based on the location information regarding the handling terminal 7 obtained from the location management unit 24. The selected security officer is instructed to deal with the search for the stolen vehicle. This instruction is given from the operator of the monitoring center 6. In addition, when the theft monitoring part 26 determines with theft, it can also be configured to automatically notify a security officer of a pre-set countermeasure instruction.
[0015]
The sensor terminal 2 is configured to be separable into three parts in this system. 3, 4, and 5 are schematic block diagrams showing three parts of the sensor terminal 2, respectively. FIG. 3 shows the abnormality detection unit 3, FIG. 4 shows the portable terminal unit 4, and FIG. 5 shows the set operation unit 5. Is shown.
[0016]
The abnormality detection unit 3 includes a vibration sensor 30 that detects vibration that may occur due to movement of the vehicle, an infrared sensor 32 that detects a change in the heat source around the abnormality detection unit, and a predetermined event that may occur during theft based on the output of these sensors The determination unit 34 for determining the presence or absence of occurrence, the mobile terminal interface 36 connected to the mobile terminal unit 4, the connection determination unit 38 for determining whether or not the mobile terminal unit 4 is connected, and the determination unit 34 The signal output unit 40 is configured to generate an abnormal signal when the occurrence of an event is detected and generate a recovery signal when the disappearance of the predetermined event is detected. Further, the determination unit 34 determines whether or not the vibration detection unit 42 determines whether the vibration is generated / stopped based on the output of the vibration sensor 30 and whether or not the mounting position of the abnormality detection unit 3 is transferred based on the output of the infrared sensor 32. A transfer determination unit 44 for determination is included.
[0017]
The portable terminal unit 4 is used by the wireless communication unit 50 that receives a radio signal from the GPS satellite 14 and performs wireless communication with the base station 10, the control unit 52 that controls each unit of the portable terminal unit 4, and the control unit 52. A storage unit 54 that stores data to be transmitted, and an external device connection interface 56 that is connected to the abnormality detection unit 3 or the set operation unit 5. The portable terminal unit 4 further includes a battery pack 60 that supplies power to the circuit, a power switch 62 that switches power on / off, and a monitoring LED (Light Emission Diode) 64 that displays whether or not the theft monitoring state is set.
[0018]
The set operation unit 5 is operated according to signals from the operation unit 70 and the operation unit 70 which are human power means for performing an operation of setting the mobile terminal unit 4 to be in a theft monitoring state and a release operation of releasing the operation. A control unit 72 for sending a control signal for instructing start / stop of monitoring to the mobile terminal unit 4, a mobile terminal interface 74 connected to the mobile terminal unit 4, and a display unit 76 for displaying the contents of input in the operation unit 70. It is comprised including.
[0019]
Next, an outline of the operation of this system will be described. The user operates the sensor terminal 2 to set the start and stop of the theft monitoring operation by the sensor terminal 2 in the vehicle theft detection service by this system. Hereinafter, the state of the sensor terminal 2 where the theft monitoring is performed is referred to as a set state, and the state of the sensor terminal 2 where the theft monitoring is stopped is referred to as a released state.
[0020]
The user parks the vehicle and sets the sensor terminal 2 before leaving the vehicle. Specifically, the sensor terminal 2 is configured by connecting the set operation unit 5 to the portable terminal unit 4 and turning on the power switch 62 and then performing a predetermined monitoring set input from the operation unit 70 by the user. The portable terminal unit 4 is set. In this system, the set operation unit 5 is removed from the portable terminal unit 4 that has shifted to the set state, and the abnormality detection unit 3 is connected to the portable terminal unit 4 instead.
[0021]
When the mobile terminal unit 4 enters the set state, the mobile terminal unit 4 transmits a monitoring set signal to the monitoring center 6. When the monitoring center 6 receives the monitoring set signal, the mobile terminal unit 4 starts monitoring whether the vehicle on which the sensor terminal 2 is mounted is stolen. In addition, when the abnormality detection unit 3 is connected, the portable terminal unit 4 generates an abnormality signal and a recovery signal based on the outputs of the vibration sensor 30 and the infrared sensor 32 and transmits them to the monitoring center 6. The monitoring center 6 that has started monitoring determines whether or not the vehicle has been stolen based on the abnormality signal, the recovery signal, and the release signal reported from the mobile terminal unit 4. As described above, the countermeasure terminal 7 is instructed to cope.
[0022]
On the other hand, when the user returns to the vehicle, the sensor terminal 2 is released. Specifically, the user removes the abnormality detection unit 3 from the mobile terminal unit 4, connects the set operation unit 5 instead, and performs a predetermined monitoring release input from the operation unit 70, thereby releasing the mobile terminal unit 4. It becomes a state.
[0023]
When the mobile terminal unit 4 enters the release state, the mobile terminal unit 4 transmits a monitoring release signal to the monitoring center 6. When receiving the monitoring release signal, the monitoring center 6 stops monitoring whether the vehicle on which the sensor terminal 2 is mounted is stolen.
[0024]
Subsequently, a more detailed operation at the sensor terminal 2 will be described with reference to FIGS. 6 to 10, and then a more detailed operation at the monitoring center 6 will be described with reference to FIG.
[0025]
FIG. 6 is a process flow diagram in the mobile terminal unit 4 when shifting from the release state to the set state. The mobile terminal unit 4 monitors the input from the external device connection interface 56 in the release state, and when detecting the monitor set input (S100), starts the transition process to the set state. In this transition processing, if it can be authenticated that the operation is performed by a legitimate user based on the operation signal input from the set operation unit 5, the wireless communication unit 50 receives the signal from the GPS satellite 14, and the portable terminal unit 4. Current position information is acquired (S105), and the control unit 52 sends data including the position information and the monitoring start signal to the monitoring center 6 (S110). Data from the portable terminal unit 4 to the monitoring center 6 is first wirelessly transmitted from the wireless communication unit 50 to the base station 10 through a cellular phone communication line, and then transmitted from the base station 10 to the monitoring center 6 via the network 8. The Further, the control unit 52 stores information indicating that it is in the monitoring mode in the storage unit 54 (S115), and the portable terminal unit shifts to the set state (S120). As described above, thereafter, the set operation unit is removed from the mobile terminal unit 4, and the abnormality detection unit 3 is connected to the mobile terminal unit 4 instead.
[0026]
The operation of the mobile terminal unit 4 in the set state will be described later with reference to FIG.
7 to 9 show the operation of the abnormality detection unit 3 constituting the sensor terminal 2, and FIG. 7 is a flowchart of the vibration determination process. When the connection determination unit 38 detects that the mobile terminal unit 4 in the set state is connected to the abnormality detection unit 3 by transmitting and receiving a predetermined signal between them (S200), the vibration determination unit 42 starts processing. When the vibration sensor 30 detects vibration, the vibration determination unit 42 basically outputs a vibration detection signal for a predetermined connection time.
[0027]
When vibration is sensed (S205) and the output of the vibration detection signal is not already held (S210), the vibration determination unit 42 starts outputting the vibration detection signal (S215), and the duration of the vibration detection signal The holding timer for measuring the time is started (S220). On the other hand, if the output of the vibration detection signal is held in step S210, the vibration determination unit 42 restarts the holding timer while holding the output of the vibration detection signal (S225). That is, the holding timer counts the duration from the beginning when a new vibration is sensed.
[0028]
If no vibration is detected in step S205, it is determined that the holding timer has expired (S230). When the holding timer expires, the output of the vibration detection signal is released (S235). On the other hand, when the time has not expired, the output of the vibration detection signal is continued (S225). The duration is, for example, the average duration of one movement of a gondola in a mechanical parking lot, the average time interval of two subsequent gondola movements, the time from one start to stop of a vehicle. It is determined based on time, an average stop time due to waiting for a signal, and the like. Specifically, when parking in a mechanical parking lot, the duration of the vibration detection signal is basically prevented from exceeding a grace time at the monitoring center 6 to be described later by restarting the holding timer. When a person tries to take away the vehicle, even if the vibration at the time of traveling of the vehicle is interrupted due to waiting for a signal or the like, the duration of the vibration detection signal is basically the grace time of the monitoring center 6 by restarting the holding timer. The duration of the vibration detection signal is set so as to exceed. For example, the duration can be set to about 1 minute.
[0029]
The processes in steps S205 to S235 described above are repeated until the connection determination unit 38 detects that the mobile terminal unit 4 is not connected to the abnormality detection unit 3 (S240). On the other hand, when unconnected with the mobile terminal unit 4 is detected, the vibration determination unit 42 ends the process (S245).
[0030]
FIG. 8 is a process flow diagram of the transfer determination process. When the connection determination unit 38 detects that the mobile terminal unit 4 in the set state is connected to the abnormality detection unit 3 (S300), the transfer determination unit 44 starts processing. If the infrared sensor 32 senses a change in the amount of ambient infrared rays and vibration is detected within a predetermined time before and after that, for example, within 5 seconds (S310), someone detects the abnormality detection unit 3 in the vehicle. There is a high possibility that it was moved from the place where it was placed. Therefore, in this case, the relocation determination unit 44 starts outputting a relocation detection signal indicating the possibility of relocation of the abnormality detection unit 3 (S315), and holds this relocation detection signal (S320).
[0031]
On the other hand, when no infrared change is detected in step S305 and no vibration is detected within a predetermined time in step S310, no special processing is performed.
[0032]
The above processing in the transfer determination unit 44 is repeated until the connection determination unit 38 detects that the mobile terminal unit 4 is not connected to the abnormality detection unit 3 (S325). On the other hand, when unconnection with the mobile terminal unit 4 is detected, the transfer determination unit 44 ends the process (S330). Incidentally, the transfer detection signal once started to be output is held until the processing in the transfer determination unit 44 ends.
[0033]
FIG. 9 is a flowchart of processing performed by the signal output unit 40. The signal output unit 40 determines whether or not the transfer determination unit 44 has output a transfer detection signal (S400). If the transfer detection signal is output, the signal output unit 40 indicates a signal indicating an abnormal status to the mobile terminal unit 4. Starts to be output (S405). If it is determined in step S400 that the transfer detection signal has not been output, it is determined whether the vibration determination unit 42 has output the vibration detection signal (S410). When the vibration detection signal is output, output of a signal indicating an abnormal status to the mobile terminal unit 4 is started (S405).
[0034]
On the other hand, when neither the transfer detection signal nor the vibration detection signal is output (S410), the signal output unit 40 starts outputting a signal indicating a normal status to the mobile terminal unit 4 (S415).
[0035]
The processes S400 to S415 in the signal output unit 40 based on the presence / absence of the transfer detection signal and the vibration detection signal are also repeated while the mobile terminal unit 4 is connected to the abnormality detection unit 3 (S420).
[0036]
FIG. 10 is a processing flowchart of the mobile terminal unit 4 in the set state. As described above, when the abnormality detection unit 3 determines that there is a possibility of theft based on the outputs of the vibration sensor 30 and the infrared sensor 32, the output to the mobile terminal unit 4 means a normal state. Change from normal status to abnormal status, which means that an abnormality has been detected.
[0037]
On the other hand, when the possibility of theft is reduced, the abnormal status is changed to the normal status.
[0038]
When the mobile terminal unit 4 monitors the input from the external device connection interface 56 and detects that the status output from the abnormality detection unit 3 has changed from normal to abnormal (S500), it receives a signal from the GPS satellite 14 Current position information of the mobile terminal unit 4 is acquired (S505). Then, data including an abnormal signal indicating the transition to the abnormal status and the current position information is sent to the monitoring center 6 (S510).
[0039]
On the other hand, when the portable terminal unit 4 detects that the status output from the abnormality detection unit 3 has transitioned from abnormality to normal (S520), the portable terminal unit 4 receives a signal from the GPS satellite 14 and receives the current signal from the portable terminal unit 4 The position information is acquired (S525), and data including a recovery signal indicating the transition to the normal status and the current position information is sent to the monitoring center 6 (S530). If there is no status change, data transmission to the monitoring center 6 is not performed.
[0040]
That is, after the vibration detection signal is output and the abnormal status is set and the abnormal signal is transmitted to the monitoring center 6, the recovery signal is transmitted to the monitoring center 6 when the vibration detection output is stopped and the normal status is set. .
[0041]
On the other hand, when the transfer detection signal is output once and the abnormal signal set to the abnormal status is transmitted to the monitoring center 6, the normal status is not set even if the vibration stops, and the recovery signal is sent to the monitoring center. 6 is not sent.
[0042]
As described above, the process of monitoring the status of the abnormality detection unit 3 by the mobile terminal unit 4 in steps S500 to S530 is repeated until the monitoring release input from the set operation unit 5 described above is detected (S550). When the mobile terminal unit 4 detects a monitoring release input, the mobile terminal unit 4 stores information indicating that the control unit 52 is in the release mode in the storage unit 54 (S555), and the mobile terminal unit 4 shifts to the release state and performs monitoring. A release signal is sent to the center 6 (S560).
[0043]
Incidentally, neither the normal status signal nor the abnormal status signal is input to the mobile terminal unit 4 when the abnormality detection unit 3 is not connected to the mobile terminal unit 4. Therefore, even if the thief pulls out the abnormality detection unit 3 from the portable terminal unit 4, the normal status signal is not input to the portable terminal unit 4, and the portable terminal unit 4 detects the transition to the normal status in step S520. The recovery signal is not sent to the monitoring center 6.
[0044]
Next, a more detailed operation at the monitoring center 6 will be described. FIG. 11 is a flowchart of processing performed in the monitoring center 6. When the monitoring center 6 receives the monitoring start signal sent from the sensor terminal 2 in step S600 (S600), the monitoring center 6 starts monitoring the vehicle on which the sensor terminal 2 is mounted, and the position at the monitoring start time of the vehicle. Is registered (S605). The position of the vehicle (exactly the sensor terminal 2) is determined by the position management unit 24 based on the position information transmitted together with the monitoring start signal. The position management unit 24 corrects the position information obtained from the sensor terminal 2 using information from the satellite reference station 12 and calculates the position of the vehicle.
[0045]
The position information of the sensor terminal 2 is added not only to the monitoring start signal but also to various other signals transmitted from the sensor terminal 2 to the monitoring center 6. When the position management unit 24 receives a signal from the sensor terminal 2 of the monitoring target vehicle (S610), the position management unit 24 performs correction similar to that at the start of monitoring, obtains the position of the vehicle from the position information added to the signal, and monitors theft. The unit 26 calculates the moving distance of the vehicle from the start of monitoring from the position at the start of monitoring registered in the position management unit 24 and the latest position (S615). The theft monitoring unit 26 determines that an abnormality has occurred when the moving distance exceeds a predetermined allowable distance at which it can be determined that the vehicle has been stolen (S620), and causes an abnormality in the display device or the like. A display indicating the occurrence is performed and the monitoring staff in the monitoring center 6 is notified (S625).
[0046]
When the moving distance is equal to or smaller than the allowable distance (S620), whether the received signal in step S610 is an abnormal signal transmitted from the sensor terminal 2 in step S510 (S630), or the recovery signal transmitted in step S530. It is determined whether it is a signal (S635) or a release signal transmitted in step S550 (S640).
[0047]
If the received signal is an abnormal signal, the theft monitoring unit 26 starts measuring the grace time (S645). On the other hand, if the received signal is a restoration signal, the time measurement is terminated (S650). In these cases, a grace time determination process S665 is subsequently performed. If there is no new received signal in step S610 and if the received signal is neither an abnormal signal, a restoration signal, nor a release signal, the process proceeds to step S665. When the received signal is a release signal, the time measurement is finished (S655) and monitoring of the vehicle is finished (S660).
[0048]
In the grace time determination process S665, it is determined whether or not the time measured in step S645 has exceeded a predetermined grace time. The theft monitoring unit 26 proceeds to the determination processing S610 whether or not a new signal has been received if the measured time does not exceed the grace time, but if the grace time is exceeded (S665), an abnormality is detected. It is determined that the error has occurred, a display indicating the occurrence of an abnormality is displayed on the display device or the like, and a monitor in the monitoring center 6 is notified (S625). The grace time is determined together with the duration based on the consideration in determining the duration of the holding timer of the sensor terminal 2 described above. For example, the grace time can be set to about 10 minutes.
[0049]
As described above, the monitoring center 6 repeats the stolen vehicle to move and stop at an appropriate timing by determining the theft based on whether the moving distance of the vehicle is within the allowable distance range other than the grace period. Theft can be detected even if a recovery signal is issued by avoiding restart of the holding timer.
[0050]
When the theft is detected at the monitoring center 6, the notified monitor notifies the system user's registered contact information of the abnormality, or the security officer who carries the nearest handling terminal 7 to the stolen vehicle, A countermeasure is taken such that the identification is performed based on the position information transmitted by the coping terminal 7, the characteristics of the stolen vehicle are notified, and the search is performed.
[0051]
【The invention's effect】
According to the vehicle theft detection system of the present invention, the sensor terminal installed in the automobile transmits a signal to the monitoring center according to various states, and the monitoring center determines whether or not it is theft. When the monitoring center grasps the state of the sensor terminal and makes a determination, false or misreporting is suppressed.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration of a vehicle theft detection system according to an embodiment of the present invention.
FIG. 2 is a schematic block diagram of a monitoring center 6;
FIG. 3 is a schematic block diagram of an abnormality detection unit 3;
4 is a schematic block diagram of a mobile terminal unit 4. FIG.
FIG. 5 is a schematic block diagram of a set operation unit 5;
FIG. 6 is a process flow diagram in the mobile terminal unit when shifting from the release state to the set state.
FIG. 7 is a processing flowchart of vibration determination processing.
FIG. 8 is a process flow diagram of a transfer determination process.
FIG. 9 is a flowchart of processing performed in a signal output unit.
FIG. 10 is a process flow diagram of the mobile terminal unit in the set state.
FIG. 11 is a flowchart of processing performed in the monitoring center 6;
[Explanation of symbols]
2 ... Sensor terminal
3 ... Abnormality detection unit
4 ... Mobile terminal
5 ... Set operation section
6 ... Monitoring center
7 ... Handling terminal
8 ... Network
10 ... PHS base station
12 ... Satellite reference station
14 ... GPS satellites
20 ... Communication Department
22, 52, 72... Control unit
24 ... Location management department
26 ... Theft monitoring unit
30 ... Vibration sensor
32 ... Infrared sensor
34: Determination unit
36, 74 ... mobile terminal interface

Claims (2)

A vehicle theft detection system that detects theft of the vehicle at a monitoring center based on a report from a sensor terminal mounted on the vehicle to the monitoring center,
The sensor terminal is
A sensor unit for detecting the occurrence and disappearance of vehicle vibration that may occur during vehicle theft;
A transfer detection unit for detecting the transfer of the sensor terminal;
An alarm signal is sent to the monitoring center in response to the occurrence detection and transfer detection of the vibration, and a recovery signal is sent to the monitoring center in response to detection of the disappearance of the vibration , wherein the transfer detection unit is a sensor After detecting the transfer of the terminal, the sensor unit has a notification unit that does not transmit the restoration signal even when the disappearance of vibration is detected ,
The monitoring center is
When the abnormal signal is received, timing starts, and when the restoration signal is received, the timing unit ends timing ,
A vehicle theft detection system, comprising: a determination unit that determines that a theft has occurred based on a time measured by the time measuring unit exceeding a predetermined grace period. The vehicle theft detection system according to claim 1,
The sensor terminal has a release detection unit that detects a release operation,
The notification unit may Problem release signal to the monitoring center in response to the detection of the release detection section,
When the monitoring center receives the release signal, the time counting unit ends the time counting.

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