Vehicle theft detection system, vehicle theft detection method, and in-vehicle device

Abstract

To notify a user of vehicle theft and its location with a simple system configuration.SOLUTION: A vehicle theft detection system includes: an on-vehicle machine 1 to be mounted on a vehicle 50; a portable unit 2 of a user for communicating with the on-vehicle machine 1; and a server 4 for communicating with the portable unit 2 of the user and a portable unit 3b of a third person. When the vehicle 50 stops at a P-point, the on-vehicle machine 1 acquires first position information indicating a position of the portable unit of the user 2 from the portable unit, so as to periodically transmit the first position information. In a case where the vehicle 50 is thieved and transported from the P-point to a Q-point and when the portable unit 3b of the third person at the Q-point receives the first position information from the on-vehicle machine 1, the portable unit of the third person compares the position itself with the position of the portable unit 2, so as to transmit second position information indicating the position of the portable unit 3b to the server 4 when the positions are separated over a predetermined distance. When the second position information is received, the server 4 transmits the position indicated by the second position information to the portable unit 2 of the user together with warning.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a system for detecting theft of a vehicle such as a motorcycle, and more particularly to a technology for detecting theft using a portable device such as a smartphone. [Background technology]

[0002] Various systems for detecting theft or loss of items have been proposed. For example, in Patent Document 1, when a signal from a wireless tag attached to a baggage is lost while the baggage transport vehicle is stopped, it is determined that the baggage has been stolen. In Patent Document 2, the location of a lost item is displayed on the user's wireless terminal by tracking the location of a wireless tag attached to the item. In Patent Document 3, when the vehicle's position changes within a pre-registered parking time, the vehicle's position is displayed on the user's wireless terminal along with a map. In Patent Document 4, when the periodically detected stopping position of a vehicle differs from the previous position by more than a predetermined distance, information necessary for monitoring the stolen vehicle is transmitted to a server. In Patent Document 5, when the distance between the onboard device and the wireless terminal calculated from their respective positions is more than a predetermined value, it is determined that the vehicle has been stolen and the user is notified of the theft.

[0003] Generally, motorcycles are equipped with an onboard device that controls the engine, motor, and other driving power sources, as well as various controls for preventing theft and accidents. Some motorcycles are also in practical use, and perform key authentication based on wireless communication between the onboard device and the user's electronic key. If the authentication result is correct, the engine is allowed to start, but if the authentication result is incorrect, the engine is prohibited from starting. Motorcycles are also equipped with a handlebar lock function to prevent a third party from running off while the motorcycle is stopped.

[0004] However, because parked motorcycles are smaller and lighter than four-wheeled vehicles, they can be easily carried away on a dolly or truck without starting the engine or unlocking the handlebars, and this type of theft is actually quite common. While there are measures to prevent motorcycle theft, such as wire locks and chain locks, if the wires or chains are cut with a tool, theft by the above methods is inevitable.

[0005] When a vehicle is stolen, one of the means for detecting the location of the stolen vehicle is the well-known GPS (Global Positioning System). For example, the vehicle tracking system disclosed in Patent Document 3 utilizes GPS. However, this system requires a GPS receiver to be installed in the vehicle, and long-distance communication is required between the on-board device and the server, which results in problems of the system becoming complicated and increasing costs. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2019-28752 [Patent Document 2] Japanese Patent Publication No. 2020-141403 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-329295 [Patent Document 4] Japanese Patent Application Laid-Open No. 2012-66648 [Patent Document 5] Japanese Patent Application Laid-Open No. 2010-228691 Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention is to make it possible to notify a user of vehicle theft and location using a simple system configuration. [Means for solving the problem]

[0008] The vehicle theft detection system of the present invention includes an onboard device mounted on a vehicle, a user's portable device carried by the vehicle user and communicating with the onboard device, and a server that communicates with the user's portable device and a third party's portable device carried by a person other than the user. When the vehicle is stopped, the onboard device acquires first location information indicating the location of the user's portable device from the user's portable device, stores the acquired first location information, and then periodically transmits the first location information. When the vehicle is ready to travel, the onboard device stops transmitting the first location information. Furthermore, when the third party's portable device receives the first location information transmitted from the onboard device, it compares the first location information with second location information indicating the location of the third party's portable device, and if the locations indicated by the respective location information are apart by more than a predetermined distance, it transmits the second location information to the server. When the server receives the second location information, it transmits the location indicated by the second location information together with an alarm to the user's portable device.

[0009] In this way, if a vehicle parked at a location where the user is located (point P) is stolen and moved to another location (point Q), first location information indicating point P transmitted from the in-vehicle device is received by a portable device of a third party at point Q. If point P and point Q are separated by more than a predetermined distance, second location information indicating point Q is transmitted from the third party's portable device to the server, and the second location information is then transmitted from the server to the user's portable device together with an alarm. Therefore, the user can know that the stolen vehicle is at point Q based on the second location information.

[0010] In the above-described system, even if the in-vehicle device does not have a function for acquiring location information itself, it can acquire location information from the user's portable device and transmit first location information indicating point P while the vehicle is stopped. This eliminates the need to install a GPS receiver in the vehicle. Furthermore, the in-vehicle device does not need to perform long-distance communication with the server; it can simply communicate with the user's or a third party's portable device near the vehicle. This communication method can use a simple short-range wireless communication method such as Bluetooth (registered trademark) Low Energy (BLE), thereby simplifying the system. Furthermore, when the user drives the vehicle from point P to point Q, the in-vehicle device stops transmitting the first location information when the vehicle becomes drivable (such as when the engine is started). Therefore, at point Q, the third party's portable device will not receive the first location information and communicate with the server, thereby avoiding a false alarm of vehicle theft to the user.

[0011] In the present invention, when the vehicle is stopped, the in-vehicle device may transmit a request signal requesting first position information to the user's portable device together with first identification information, which is identification information of the in-vehicle device, and after storing the first position information received from the user's portable device, periodically transmit the first position information together with the first identification information. In this case, after receiving the first identification information from the in-vehicle device, the user's portable device transmits the first identification information and second identification information, which is identification information of the user's portable device, to the server. Furthermore, the third party's portable device transmits the received first identification information and second position information to the server. The server stores the first identification information and the second identification information received from the user's portable device in association with each other, and upon receiving the first identification information and the second position information from the third party's portable device, transmits the location indicated by the second position information together with an alert to the user's portable device based on the second identification information associated with the first identification information.

[0012] In the present invention, it is also conceivable that the first location information transmitted from the in-vehicle device is received by the user's portable device. In this case, the user's portable device compares the received first location information with third location information indicating the location of the user's portable device. If the locations indicated by the respective location information are separated by more than a predetermined distance, the user's portable device transmits the third location information to the server. Upon receiving this third location information, the server transmits the location indicated by the third location information together with an alert to the user's portable device.

[0013] In the present invention, the vehicle may be a motorcycle. In this case, the stopped state of the vehicle is, for example, a state in which the handlebars of the motorcycle are locked, the engine is stopped, or the power is turned off. Furthermore, the runnable state of the vehicle is, for example, a state in which the handlebars of the motorcycle are unlocked, the engine is started, or the power is turned on. [Effects of the Invention]

[0014] According to the present invention, it is possible to notify a user of the theft and location of a vehicle with a simple system configuration. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is an overall view of a vehicle theft detection system according to the present invention; [Figure 2] FIG. 2 is a block diagram showing the configurations of an in-vehicle device, a portable device, and a server. [Figure 3] FIG. 1 is a diagram illustrating the principle of detecting vehicle theft. [Figure 4] FIG. 1 is a diagram illustrating the principle of detecting vehicle theft. [Figure 5] 4 is a flowchart showing a communication procedure in the vehicle theft detection system. [Figure 6] 10A and 10B are diagrams illustrating another example of vehicle theft detection according to the present invention. [Figure 7] 7 is a flowchart showing the communication procedure in the case of FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the following, a motorcycle driven by an engine will be taken as an example of a vehicle.

[0017] 1 shows an example of a vehicle theft detection system according to the present invention. Vehicle theft detection system 100 comprises an onboard device 1 mounted on a vehicle 50, a specific portable device 2 carried by user A (the user himself / herself) of vehicle 50, unspecified portable devices 3a, 3b, and 3c carried by third parties X1, X2, and X3 other than user A, and a server 4 that communicates with portable device 2 and portable devices 3a, 3b, and 3c. Hereinafter, the specific portable device 2 carried by user A will be referred to as "user A's portable device 2," and the unspecified portable devices 3a, 3b, and 3c carried by third parties X1, X2, and X3 will be collectively referred to as "third party X's portable device 3."

[0018] In this embodiment, the vehicle 50 is a motorcycle. The in-vehicle device 1 is mounted in a predetermined location on the vehicle 50 and communicates with the portable device 2 of the user A and the portable device 3 of the third party X. The communication between the in-vehicle device 1 and the portable device 2 of the user A is two-way communication, while the communication between the in-vehicle device 1 and the portable device 3 of the third party X is one-way communication from the in-vehicle device 1 to the portable device 3. Furthermore, the portable device 2 of the user A and the portable device 3 of the third party X communicate with a server 4. The communication between the portable device 2 of the user A and the server 4 is two-way communication, while the communication between the portable device 3 of the third party X and the server 4 is one-way communication from the portable device 3 to the server 4. Details of each communication will be described later, but the overview is as follows.

[0019] A "location information request signal" and "first identification information" are transmitted from the vehicle-mounted device 1 to the portable device 2 of user A, and "first location information" is transmitted from the portable device 2 to the vehicle-mounted device 1. The "location information request signal" is a signal that requests the portable device 2 of user A to transmit location information of the portable device 2. The "first identification information" is the ID of the vehicle-mounted device 1, and the "first location information" is information that indicates the location of the portable device 2 of user A. In addition, the "first location information" and "first identification information" are periodically transmitted from the vehicle-mounted device 1.

[0020] "First identification information" and "second identification information" are transmitted from the portable device 2 of user A to the server 4. The "second identification information" is the ID of the portable device 2 of user A. "Second location information" and "first identification information" are transmitted from the portable device 3 of third party X to the server 4. The "second location information" is information indicating the location of the portable device 3 of third party X.

[0021] As will be described later, the portable device 3 of the third party X transmits the "second location information" and the "first identification information" to the server 4 only when the vehicle 50 is stolen and moved to another location, and the portable device 3 receives the "first location information" and the "first identification information" transmitted from the in-vehicle device 1 at that location. Then, the server 4 transmits an "alarm" and the "second location information" to the portable device 2 of the user A only when the server 4 receives the "second location information" and the "first identification information."

[0022] FIG. 2 shows an example of the configuration of the in-vehicle device 1, the portable device 2 of user A, the portable device 3 of third party X, and the server 4. The in-vehicle device 1 is configured with an ECU (electronic control unit) and includes a communication unit 11, a storage unit 12, and a control unit 13. The communication unit 11 has an antenna and a communication circuit for performing short-range wireless communication (for example, the aforementioned BLE) with the portable device 2 of user A and the portable device 3 of third party X. The storage unit 12 is configured with semiconductor memory and is provided with an area for storing programs, data, etc. necessary for control by the control unit 13, and an area for temporarily storing data received by the communication unit 11, etc. The control unit 13 is configured with a CPU and controls the operation of the in-vehicle device 1.

[0023] The portable device 2 of user A is configured as a smartphone and includes a communication unit 21, an operation unit 22, a display unit 23, a storage unit 24, and a control unit 25. The communication unit 21 includes an antenna and a communication circuit for short-range wireless communication with the in-vehicle device 1, as well as an antenna and a communication circuit for long-range wireless communication with the server 4. The communication unit 21 also includes an antenna and a receiving circuit for receiving radio waves from GPS satellites to acquire location information. For example, UHF (Ultra High Frequency) signals are used for long-range wireless communication with the server 4. The operation unit 22 includes various switches, and the display unit 23 includes a touch panel, LED lamps, and the like. The storage unit 24 includes a semiconductor memory, and the control unit 25 includes a CPU.

[0024] Third party X's portable device 3 is also configured as a smartphone, and includes a communication unit 31, an operation unit 32, a display unit 33, a storage unit 34, and a control unit 35. These units 31 to 35 are the same as the units 21 to 25 of user A's portable device 2, and therefore their description will be omitted. In addition to the above-mentioned units, each portable device 2, 3 is also equipped with a speaker, a microphone, etc., but these are not shown in FIG. 2.

[0025] The server 4 is composed of a host computer and includes a communication unit 41, a memory unit 42, and a control unit 43. The communication unit 41 has an antenna and a communication circuit for performing long-distance wireless communication with the portable device 2 of user A and the portable device 3 of third party X via a network. The memory unit 42 has a large-capacity storage for storing transmitted and received data and other data. The control unit 43 is composed of a CPU and other components, and controls the operation of the server 4.

[0026] Next, the principle of vehicle theft detection by the above-described vehicle theft detection system 100 will be described with reference to FIGS.

[0027] 3 is a diagram showing communication between the various parts when vehicle 50 has not been stolen. Here, it is assumed that user A drives vehicle 50 and stops vehicle 50 at point P. Note that point P is not limited to the pinpoint location of vehicle 50, but also includes a certain range of area (for example, a parking lot of a convenience store) where short-range wireless communication with vehicle 50 is possible.

[0028] When the vehicle 50 comes to a stop, the in-vehicle device 1 transmits, via short-range wireless communication, to the portable device 2 of user A, a location information request signal requesting location information (first location information) indicating the location of the portable device 2, and the in-vehicle device ID (first identification information) generated by the in-vehicle device 1. When the portable device 2 of user A, which is in the vicinity of the vehicle 50, receives the location information request signal and the in-vehicle device ID from the in-vehicle device 1, it transmits its own location acquired by GPS to the in-vehicle device 1. At this time, the portable device 2 is at point P, so the location of the portable device 2 is set to point P.

[0029] Next, the portable device 2 of the user A transmits the in-vehicle device ID received from the in-vehicle device 1 together with its own portable device ID (second identification information) to the server 4 via long-distance wireless communication. The server 4 stores the two pieces of identification information received from the portable device 2 of the user A, i.e., the in-vehicle device ID and the portable device ID, in association with each other.

[0030] Meanwhile, when the vehicle-mounted device 1 receives location information (point P) from the portable device 2 of user A, it periodically transmits this location information together with the vehicle-mounted device ID via short-range wireless communication. Then, when this location information and vehicle-mounted device ID are received by the portable device 3a of a third party X1 at point P, the portable device 3a compares its own location acquired from the GPS with the location of the portable device 2 of user A.

[0031] As a result of the comparison, the two portable devices are both located at point P, so their locations are not far apart. In this case, the portable device 3a of the third party X1 determines that the vehicle 50 with which it communicated is located at point P and is not stolen, and does not communicate with the server 4. This will be explained in more detail later.

[0032] 4 is a diagram showing communication between various parts in a situation where vehicle 50 has been stolen. Here, it is assumed that vehicle 50, which is parked at point P, is stolen by someone and transported by truck or the like to point Q, which is far away from point P. Here again, point Q is not limited to the pinpoint location of vehicle 50, but also includes a certain range of area where short-range wireless communication with vehicle 50 is possible.

[0033] At point Q, vehicle 50 continues to be stopped, so similar to point P, in-vehicle device 1 periodically transmits the location information (original location, point P) and in-vehicle device ID of user A's portable device 2 via short-range wireless communication. When this location information and in-vehicle device ID are received by portable device 3b of third party X2 at point Q, portable device 3b compares its own location acquired from GPS with the location of portable device 2. At this time, portable device 3b is at point Q, so the location of portable device 3b is set to point Q.

[0034] As a result of the comparison, it is determined that the portable device 2 of user A is at point P, and the portable device 3b of third party X2 is at point Q, which means that the two locations are far apart. In this case, the portable device 3b of third party X2 determines that the vehicle 50 with which it communicated is located far from point P and has been stolen, and transmits its own location information (point Q) together with the vehicle-mounted device ID to the server 4. This will also be explained in detail later.

[0035] When the server 4 receives this location information and the in-vehicle device ID, it extracts the portable device ID of the portable device 2 of the user A, which is stored in association with the in-vehicle device ID, and transmits the location information (point Q) of the portable device 3b along with an alarm to the portable device 2 of the user A based on this portable device ID. As a result, a message informing the user A of the vehicle theft and the location of the stolen vehicle (point Q) are displayed on the portable device 2 of the user A. This allows the user A to know that the vehicle 50 has been stolen and that the vehicle 50 is at point Q.

[0036] FIG. 5 is a flowchart showing a communication procedure among the vehicle-mounted device 1, the portable device 2 of the user A, the portable device 3 of the third party X, and the server 4.

[0037] In the vehicle-mounted device 1, when the ignition switch is turned OFF and the vehicle 50 is stopped (step S1), the control unit 13 generates an vehicle-mounted device ID (step S2), and transmits this vehicle-mounted device ID together with a location information request signal from the communication unit 11 to the mobile device 2 of user A via BLE communication (step S3).

[0038] In user A's portable device 2, when the communication unit 21 receives the in-vehicle device ID and the location information request signal from the in-vehicle device 1 (step S11: YES), the communication unit 21 transmits its own portable device location, acquired by GPS, as location information to the in-vehicle device 1 (step S12). In addition, user A's portable device 2 transmits the in-vehicle device ID received from the in-vehicle device 1 and its own portable device ID stored in the storage unit 24 from the communication unit 21 to the server 4 via long-distance communication (step S13). In the server 4, the communication unit 41 receives the in-vehicle device ID and the portable device ID from user A's portable device 2 (step S41), and the control unit 43 associates them and stores them in the storage unit 42 (step S42).

[0039] In the in-vehicle device 1, when the communication unit 11 receives the location information from the portable device 2 of user A (step S4), the control unit 13 stores the acquired location information in the storage unit 12 (step S5). Thereafter, the communication unit 11 periodically transmits the in-vehicle device ID and the location information of the portable device 2 of user A by BLE communication (step S6). This transmission continues while the vehicle 50 is stopped, and when the ignition switch is turned ON and the vehicle 50 is ready to travel (step S7: YES), the transmission is stopped (step S8).

[0040] In the portable device 3 of the third party X, when the communication unit 31 receives the vehicle-mounted device ID and the location information of the portable device 2 transmitted from the vehicle-mounted device 1 (step S21: YES), the control unit 35 compares the location information of the portable device 2 with the current location of the portable device 3 itself obtained by GPS (step S22), and determines whether the difference in the locations of the two portable devices 2 and 3 exceeds a predetermined distance (step S23).

[0041] As shown in FIG. 3, if the portable device 3a of the third party X1 is at the same point P as the portable device 2 of the user A, the difference in the positions of the two portable devices does not exceed the predetermined distance (step S23: NO), so the process returns to step S21 and waits for the vehicle-mounted device ID and the position information of the portable device 2 to be received.

[0042] On the other hand, as shown in Figure 4, if the portable device 3b of the third party X2 is located at point Q, which is far away from the portable device 2 of the user A, the difference in the positions of the two portable devices exceeds a predetermined distance (step S23: YES), so in step S24, the portable device 3b of the third party X2 transmits the vehicle device ID and its current location (point Q) to the server 4 via long-distance communication from the communication unit 31.

[0043] The server 4 receives the in-vehicle device ID and the current location of the portable device 3b transmitted from the portable device 3b of the third party X2 via the communication unit 41 (step S51). The control unit 43 of the server 4 then refers to the storage unit 42 to search for and extract the portable device ID linked to the in-vehicle device ID. The communication unit 41 of the server 4 then transmits an alarm notifying the user A of the theft of the vehicle 50 and the current location (point Q) of the portable device 3b to the portable device 2 of the user A corresponding to the extracted portable device ID (step S52).

[0044] In user A's portable device 2, when the communication unit 21 receives the alert from the server 4 (step S31: YES), the message included in the alert and the current location of portable device 3b received together with the alert, i.e., the location of the stolen vehicle (point Q), are displayed on the display unit 23 (step S32). By looking at this display, user A can know that the vehicle 50 has been stolen and is at point Q.

[0045] In this way, according to the vehicle theft detection system 100 of the present invention, when vehicle 50 is stolen and moves from its original location, point P, to another location, point Q, the location information (point P) of user A's portable device 2 transmitted from the in-vehicle device 1 is received by portable device 3b of third party X2 at point Q. If the distance between point P and point Q exceeds a predetermined distance, the location information (point Q) of portable device 3b is transmitted from portable device 3b of third party X2 to server 4, and the server 4 then transmits an alarm and the location information of portable device 3b to user A's portable device 2. As a result, user A knows that vehicle 50 has been stolen and is now at point Q.

[0046] Furthermore, in the vehicle theft detection system 100 of the present invention, even if the in-vehicle device 1 does not itself have a function for acquiring location information, it can acquire location information from the portable device 2 of the user A and transmit the first location information indicating point P while the vehicle 50 is stopped. This eliminates the need to install a GPS receiver in the vehicle 50.

[0047] Furthermore, the in-vehicle device 1 does not need to perform long-distance communication with the server 4, but only needs to communicate with the portable devices 2 and 3 of user A and third party X who are near the vehicle 50. This allows for a simple short-range wireless communication method such as BLE to be used as the communication method, simplifying the system. Furthermore, when user A drives the vehicle 50 from point P to point Q, the in-vehicle device 1 stops transmitting the location information (point P) of the portable device 2 when the vehicle 50 becomes drivable (such as when the engine is started), and therefore the portable device 3b of third party X2 does not receive the location information at point Q. Therefore, the portable device 3b does not communicate with the server 4, which prevents the server 4 from transmitting a false alarm of vehicle theft to the portable device 2 of user A.

[0048] In the above explanation, an example has been given in which the portable device 3a of the third party X1 receives the location information (the location of the portable device 2) and the vehicle-mounted device ID periodically transmitted from the vehicle-mounted device 1 of the stopped vehicle 50 in Fig. 3, but in addition to this, the portable device 2 of the user A can also receive this location information and the vehicle-mounted device ID. In this case, the state of communication between the various parts when the vehicle 50 is stolen is as shown in Fig. 6.

[0049] 6, assume that vehicle 50 parked at point P is stolen and transported to point Q, and user A arrives at point Q in search of vehicle 50. Since vehicle 50 is stopped at point Q, in-vehicle device 1 periodically transmits location information (original location at point P) and in-vehicle device ID of user A's portable device 2 via short-range wireless communication. When user A's portable device 2 receives this location information and in-vehicle device ID, portable device 2 compares its current location (point Q) acquired from GPS with the original location of portable device 2 (point P) received from in-vehicle device 1.

[0050] As a result of the comparison, it is determined that point Q and point P are far apart, so user A's portable device 2 transmits its own current location (point Q) together with the vehicle-mounted device ID to server 4. Upon receiving this location information and vehicle-mounted device ID, server 4 transmits the location information of portable device 2 (point Q) along with an alarm to user A's portable device 2 in the same manner as in the case of FIG. 4. As a result, a message informing user A of the vehicle theft and the location of the stolen vehicle (point Q) are displayed on user A's portable device 2, thereby enabling user A to know that vehicle 50 has been stolen and is at point Q.

[0051] FIG. 7 shows the communication procedures of the vehicle-mounted device 1, user A's portable device 2, and server 4 in the case of FIG. 6. The communication procedures between the vehicle-mounted device 1 and server 4 are the same as those shown in FIG. 5. The communication procedures of user A's portable device 2 are a combination of the communication procedures of the portable device 2 shown in FIG. 5 (steps S11 to S13, S31 to S32) and the communication procedures of third party X's portable device 3 (steps S21 to S24). Steps S14 to S17 in FIG. 7 are basically the same as steps S21 to S24 in FIG. 5. Therefore, a description of each step in FIG. 7 will be omitted.

[0052] In addition to the above-described embodiment, the present invention can employ various other embodiments as follows.

[0053] In the above-described embodiment, the vehicle 50 is considered to be in a stopped state when the ignition switch of the vehicle 50 is turned OFF (the engine is stopped), but the vehicle 50 may be considered to be in a stopped state when the steering wheel of the vehicle 50 is locked. Similarly, in the above-described embodiment, the vehicle 50 is considered to be in a runnable state when the ignition switch of the vehicle 50 is turned ON (the engine is started), but the vehicle 50 may be considered to be in a runnable state when the steering wheel of the vehicle 50 is unlocked.

[0054] In the above-described embodiment, the vehicle 50 is exemplified as one that uses an engine as a power source for running, but the vehicle 50 may be an electrically powered vehicle that uses a motor as a power source for running. In this case, the vehicle 50 may be in a stopped state when the power switch of the vehicle 50 is turned off, and the vehicle 50 may be in a runnable state when the power switch is turned on.

[0055] In the embodiment described above, in FIG. 5, the vehicle-mounted device 1 transmits the vehicle-mounted device ID and location information in step S6, and then determines whether the ignition switch is ON in step S7. However, an authentication step may be added between steps S6 and S7. This authentication is performed by verifying whether the ID of the electronic key held by user A is legitimate through short-range wireless communication between the vehicle-mounted device 1 and the electronic key. If the authentication result is normal, the ignition switch is permitted to be turned ON in step S7. It is also possible for user A's portable device 2 to double as an electronic key.

[0056] In the above-described embodiment, an example was given in which BLE was used as the short-range wireless communication between the vehicle-mounted device 1 and the portable devices 2 and 3, but instead, other short-range wireless communication technologies such as Wi-Fi (registered trademark) or ZigBee (registered trademark) may be used.

[0057] In the above-described embodiment, smartphones are used as examples of the portable device 2 of user A and the portable device 3 of third party X, but the portable devices used in the present invention are not limited to smartphones and may also be tablet terminals or the like.

[0058] In the above-described embodiment, a motorcycle is used as an example of the vehicle 50, but the present invention can also be applied to vehicles such as three-wheeled and four-wheeled vehicles. [Explanation of symbols]

[0059] 1 Onboard device 2. Specific mobile device (user's mobile device) 3, 3a-3c Unspecified mobile device (third party mobile device) 4 Server 11 Communications Department 50 Vehicles (Motorcycles) 100 Vehicle Theft Detection System A User X, X1~X3 Third party

Claims

1. an on-board device mounted in a vehicle; a specific portable device carried by a user of the vehicle and configured to communicate with the in-vehicle device; a server that communicates with the specific portable device and an unspecified portable device possessed by a third party other than the user; The vehicle-mounted device is When the vehicle is stopped, first location information indicating a location of the specific portable device is acquired from the specific portable device; After storing the acquired first location information, periodically transmit the first location information; When the vehicle is in a state where it can travel, the transmission of the first location information is stopped. The unspecified portable device is When receiving the first location information transmitted from the in-vehicle device, the first location information is compared with second location information indicating the location of the unspecified portable device; If the positions indicated by the first location information and the second location information are apart by more than a predetermined distance, transmitting the second location information to the server; The vehicle theft detection system is characterized in that, upon receiving the second location information, the server transmits the location indicated by the second location information together with an alarm to the specific portable device.

2. 2. The vehicle theft detection system according to claim 1, The vehicle-mounted device is When the vehicle is stopped, a request signal for requesting the first location information is transmitted to the specific portable device together with first identification information that is identification information of the vehicle-mounted device; storing the first location information received from the specific portable device, and then periodically transmitting the first location information together with the first identification information; the specific portable device receives the first identification information from the in-vehicle device, and then transmits the first identification information and second identification information, which is identification information of the specific portable device, to the server; the unspecified portable device transmits the received first identification information and the received second location information to the server; The server storing the first identification information and the second identification information received from the specific portable device in association with each other; A vehicle theft detection system characterized in that, when the first identification information and the second location information are received from the unspecified portable device, the location indicated by the second location information is transmitted to the specified portable device along with an alarm based on the second identification information linked to the first identification information.

3. 2. The vehicle theft detection system according to claim 1, The specific portable device is When the first location information transmitted from the vehicle-mounted device is received, the first location information is compared with third location information indicating the location of the specific portable device; If the positions indicated by the first location information and the third location information are apart by more than a predetermined distance, transmitting the third location information to the server; The vehicle theft detection system is characterized in that, upon receiving the third location information, the server transmits the location indicated by the third location information together with an alarm to the specific portable device.

4. A vehicle theft detection method in a vehicle theft detection system including an on-board device mounted in a vehicle, a specific portable device carried by a user of the vehicle and communicating with the on-board device, and a server that communicates with the specific portable device and unspecified portable devices carried by third parties other than the user, comprising: when the vehicle is stopped, the in-vehicle device acquires, from the specific portable device, first location information indicating a location of the specific portable device; a step in which the on-board device stores the acquired first location information and then periodically transmits the first location information; when the vehicle is in a drivable state, the on-board device stops transmitting the first position information; a step of, when the unspecified portable device receives the first location information transmitted from the vehicle-mounted device, comparing the first location information with second location information indicating the location of the unspecified portable device; a step of transmitting the second location information to the server by the unspecified portable device when the positions indicated by the first location information and the second location information are apart by more than a predetermined distance; the server receiving the second location information transmitting the location indicated by the second location information to the specific portable device together with an alarm.

5. An in-vehicle device that is mounted in a vehicle and communicates with a specific portable device carried by a user of the vehicle, When the vehicle is stopped, first location information indicating a location of the specific portable device is acquired from the specific portable device; After storing the acquired first location information, periodically transmit the first location information so that it can be received by an unspecified portable device possessed by a third party other than the user or the specified portable device; The vehicle-mounted device stops transmitting the first position information when the vehicle becomes ready to travel.

6. 6. The vehicle-mounted device according to claim 5, When the vehicle is stopped, a request signal for requesting the first location information is transmitted to the specific portable device together with first identification information that is identification information of the vehicle-mounted device; an in-vehicle device that stores the first location information received from the specific portable device, and then periodically transmits the first location information together with the first identification information;

7. 7. The vehicle-mounted device according to claim 5 or 6, a communication unit that communicates with the specific portable device and the unspecified portable device, The in-vehicle device is characterized in that the communication unit communicates with each of the portable devices by short-range wireless communication.

8. 8. The vehicle-mounted device according to claim 5, the vehicle is a motorcycle, The vehicle stop state is a state in which the handle of the motorcycle is locked, the engine is stopped, or the power is turned off, The vehicle-mounted device is characterized in that the vehicle is in a state where the motorcycle is ready to run when the handlebars are unlocked, the engine is started, or the power is on.

Images