JP2008239004A - On-board electronic device theft monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-board electronic device theft monitoring system disabling an on-board electronic device to be normally dismounted from a vehicle by modifying a sensor and notifying of the state of the theft. <P>SOLUTION: An inclination detection part 50 for detecting that a portable car navigation device 1 as an on-board electronic device is dismounted is incorporated in a device body 10. The dismounting of the portable car navigation device 1 is detected by the inclination detection part 50. The portable car navigation device 1 is locked by a lock control part 408 in an inoperative state. If incorrect passwords are input predetermined times or more continuously, it is detected by a non-conformance quantity detection part 411, and the fact that the car navigation device is incorrectly used and the information on the present location are transmitted from a transmission part 60 to a receiver 90 specified by a mail address. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle-mounted device that is detachably mounted on a vehicle, such as a vehicle-mounted navigation device, and in particular, detects that a vehicle-mounted electronic device has been removed from the vehicle by theft, and The present invention relates to an in-vehicle electronic device theft monitoring system in which an in-vehicle electronic device is made unusable and the theft can be suppressed by notifying a predetermined communication destination of position information of the in-vehicle electronic device.

  Recently, various electronic devices such as a navigation device, a music player, a DVD player, a television receiver compatible with analog broadcasting and digital broadcasting have been miniaturized, and are provided as portable devices or as in-vehicle devices. In particular, as a vehicle-mounted device, an electronic device having a combination of the various functions described above is also provided.

  Some of these in-vehicle electronic devices are used by being attached to a dashboard of a vehicle like a navigation device, for example. Recently, an in-vehicle / portable electronic device that is equipped with a built-in power source, an AC power source connection unit, etc., is removed from the vehicle and carried outside and can be used at home or at home is also provided. Such a vehicle-mounted device is likely to be stolen because it is relatively easy to remove from the dashboard.

  Various proposals have been made as countermeasures for the case where these in-vehicle electronic devices are stolen. For example, conventionally, the following Patent Document 1 (Japanese Patent Laid-Open No. 2004-355241) discloses an invention of a vehicle communication ECU and a theft monitoring method thereof.

  The technology disclosed in Patent Document 1 relates to an apparatus in which a vehicle-mounted device communicates with the outside through a radio, and includes a sensor that detects a mounting state of the vehicle-mounted device on a vehicle. Is used to monitor abnormal removal such as theft. Then, the detection output from the sensor informs the management center that the theft has been stolen through the wireless device, and simultaneously locks the wireless device to be unusable.

  As a specific configuration of the sensor, a concave portion is formed at the vehicle mounting end of the in-vehicle device, a convex portion that fits into the concave portion is formed on the vehicle side, and whether or not the convex portion is fitted into the concave portion. Is to detect. As another configuration, a sensor provided with a sensor corresponding to a vehicle connector for receiving power from a vehicle battery is also considered.

  Moreover, the vehicle-mounted electronic device disclosed by this patent document 1 uses the password registered when it attached to the vehicle for the first time as a countermeasure for returning a removal abnormal state to a normal state. When the vehicle-mounted electronic device is attached to the vehicle again, the password is entered and compared with the password that was originally registered. If the entered password is correct, the abnormal removal flag is reset. The normal state is restored.

  Generally, a technique disclosed in the following Patent Document 2 (Japanese Patent Laid-Open No. 2001-175600) has been proposed as a conventional technique for detecting and treating unauthorized use by a third party. This technology determines whether or not a password input by a user matches a password registered in advance in a business system. When it is determined that the input passwords do not match a predetermined number of times in succession, an e-mail notifying unauthorized access is sent to the e-mail address registered for the user. In this way, since the user can know the unauthorized use of a third party, the user can take immediate action.

Further, as a technique for notifying the current position of a car that has been stolen, a technique disclosed in the following Patent Document 3 (Japanese Patent Laid-Open No. 2002-127873) has been proposed. This technology pays attention to the fact that a car is equipped with a car navigation system, detects that the car has been stolen, transmits information of this detection to the security center, and uses the navigation system to steal the car. The information on the current position of is also sent to the security center. In this way, the security center can grasp that the car has been stolen and the current position of the stolen car, and thus can take quick measures against the theft.
JP 2004-355241 A (paragraph [0018] to paragraph [0020], paragraph [0029] to paragraph [0037]) JP 2001-175600 A (paragraph [0005], paragraph [0011] to paragraph [0012]) JP 2002-127873 A (paragraph [0042] to paragraph [0048], paragraph [0054])

  However, in the in-vehicle electronic device disclosed in Patent Document 1, since the sensor for monitoring the removal of the in-vehicle device is exposed to the outside, the sensor can be crafted so as not to remove it abnormally. is there. Therefore, it cannot be detected that the in-vehicle device has been removed because the sensor does not operate normally. As a result, the conventional technique has a problem that it is impossible to accurately grasp abnormal removal of the in-vehicle device and prevent theft reliably.

  Further, the technique disclosed in Patent Document 2 is intended to prevent unauthorized use using a password, and cannot detect that the device has been removed due to an abnormality such as theft. In addition, in the technique disclosed in Patent Document 3, since a vehicle-mounted navigation system is used, it cannot be detected that the navigation system itself has been removed from the vehicle in an abnormal state such as theft. There was a problem.

  The inventor of the present application, as a result of repeated studies to solve the above problems, when removing the vehicle-mounted electronic device from the installation member, paying attention to the change in attitude from the installation state of the vehicle-mounted electronic device, If the detection means for detecting that the in-vehicle electronic device has been removed is configured so that it cannot be easily changed from the outside, the present invention is completed by conceiving that the above-mentioned problems can be solved. It is a thing.

  That is, the present invention aims to solve the above-mentioned problems, makes it impossible to make a normal removal state by crafting the sensor, and detects that the on-vehicle electronic device has been removed abnormally. In addition to providing a vehicle-mounted electronic device that enables the vehicle-mounted electronic device to be unusable, theft is prevented by notifying the predetermined communication destination of the current position of the vehicle-mounted electronic device. It is an object of the present invention to provide an in-vehicle electronic device theft monitoring system that enables quick measures against the above.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is
In an in-vehicle electronic device theft monitoring system that monitors an in-vehicle electronic device that is detachably mounted on a vehicle,
The in-vehicle electronic device includes a lock control unit, a removal detection unit provided in the main body of the in-vehicle electronic device, a password determination unit, a lock release unit, a current position detection unit, and a transmission unit. And comprising
The removal detection means is configured to detect that the attitude of the on-vehicle electronic device has changed when the on-vehicle electronic device is removed, and the lock control means is based on a detection output of the removal detection means. To lock the operation of the in-vehicle electronic device to an impossible state,
The password determination means determines a match between the input password and a pre-registered password, the lock release means releases the lock by a match determination output by the password determination means,
When the password determination unit detects a mismatch of passwords, the transmission unit transmits the current position detected by the current position detection unit to a predetermined transmission destination.

  The invention according to claim 2 of the present application is the in-vehicle electronic device according to claim 1, wherein the removal detecting means is formed by an inclination detecting unit that detects that the in-vehicle electronic device is inclined more than a predetermined angle. The vehicle-mounted electronic device according to claim 1, wherein the electronic device is mounted on the vehicle.

  According to a second aspect of the present invention, in the in-vehicle electronic device according to the first or second aspect, the in-vehicle electronic device further includes a mismatch number detection unit, and the mismatch number detection unit is the password. When it is detected that the number of password mismatches by the determination unit is continuously greater than or equal to a predetermined number, the transmission unit transmits the current position detected by the current position detection unit to a predetermined destination. To do.

  By providing the above configuration, the present invention has the following excellent effects.

  That is, firstly, according to the first aspect of the invention, the removal detecting means built in the in-vehicle electronic device detects that the in-vehicle electronic device has been removed, and the lock control means is based on this detection output. Locks the in-vehicle electronic device in a non-operating state, so that it cannot be used after the in-vehicle electronic device is removed from the vehicle. Further, since the removal detecting means is built in the apparatus, it is impossible to intentionally malfunction from the outside, and the in-vehicle electronic device can be effectively prevented from being stolen.

  Second, the password determination means determines whether the input password matches the pre-registered password, and the lock release means releases the lock by the match determination output from the password determination means. When the person removes the device and puts it on the other vehicle, the lock can be released and the device can be used again.

  Third, whether or not the input password is valid is determined by the password determination means, and when the valid password is not input, it is determined that the password is illegally used. Since the current position information of the electronic device is transmitted to the receiving device 90, the receiving device located at a position away from the in-vehicle electronic device can accurately monitor the theft situation.

  Further, according to the invention of claim 2, since the removal detection means is constituted by the inclination detection unit that detects the inclination of the device that occurs when the vehicle-mounted electronic device is removed, there is a direct relationship with the vehicle in the structure. There is no need to be exposed on the surface of the in-vehicle electronic device. Therefore, there is no special configuration in the vehicle in order to provide the removal detection means.

  According to the invention of claim 3, when the judgment of the password judging means does not match, the number of mismatch detecting means detects the number of mismatches, and when it becomes continuously more than a predetermined number, this is detected and illegal. Since it is determined to be used, and information on the unauthorized use is transmitted to the receiving device 90 together with information on the current position of the in-vehicle electronic device, the situation of theft is accurately determined in the receiving device located away from the in-vehicle electronic device. It will be possible to monitor. In addition, even if a legitimate user inputs a password several times for some reason, it is not determined that the user is illegally used.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiment described below exemplifies an in-vehicle electronic device theft monitoring system for embodying the technical idea of the present invention, and the present invention is specified as this in-vehicle electronic device theft monitoring system. However, the present invention is equally applicable to the in-vehicle electronic device theft monitoring system of other embodiments included in the scope of claims.

  FIG. 1 is a side view showing a state in which an in-vehicle electronic device according to an embodiment of the present invention is attached to a vehicle, and FIG. 2 is a state in which the in-vehicle electronic device in FIG. FIG. 3 is a side view showing a state where the in-vehicle electronic device in the embodiment of the present invention is removed from the vehicle, and FIG. 4 is a rear view showing the state in which the in-vehicle electronic device in FIG. 3 is removed from the vehicle. FIG. 5 is a block diagram showing a configuration of an in-vehicle electronic device monitoring system according to an embodiment of the present invention.

  As shown in FIG. 1 and FIG. 2, reference numeral 1 is a portable car navigation device that is a type of in-vehicle electronic device, and includes a housing 10 and a display surface 20 including a liquid crystal monitor disposed in the housing 10. The mounting bracket 30, the navigation circuit unit 40 built in the housing 10, the tilt detection unit 50 built in the housing 10, and the transmission unit 60.

  Reference numeral 70 is a stand for attaching the portable car navigation apparatus 1 to a dashboard (not shown) of the vehicle. The stand unit 70 includes a stand column 701, a coupling unit 702 provided at one end of the stand column 701 for coupling to the mounting bracket 30, and a stand fixing unit 703 provided at the other end of the stand column 701. ing. The stand fixing portion 703 fixes the stand column 701 to the dashboard.

  As apparent from FIG. 3 and FIG. 4, the mounting bracket 30 includes a mounting plate 301 (see FIG. 3) formed on the entire L shape along the back and bottom surfaces of the housing 10, and a housing. The coupling plate 302 is provided at a position corresponding to the back surface of the body 10, and a screw hole 303 (see FIG. 4) formed at a position corresponding to the bottom surface of the housing 10. Bolts 80 are screwed into the screw holes 303. The bolt 80 is screwed into a screw hole (not shown) formed on the bottom surface of the housing 10 so that the mounting bracket 30 is fixed to the housing 10.

  The coupling portion 702 includes a coupling frame 704 to which the coupling plate 302 is coupled, and a lever 705 that releases the coupling plate 302 coupled to the coupling frame 704. The coupling plate 302 is slidably coupled to the coupling frame 704. By this connection, the housing 10 is attached to the stand 70. In order to release this mounting state, the lever 705 is pulled, the housing 10 is lifted upward, and the coupling plate 302 is slid upward with respect to the coupling frame 704. By this upward sliding, the coupling plate 302 is separated from the coupling frame 704 and released from the mounted state.

  In the block diagram shown in FIG. 5, reference numeral 2 is a monitoring system. The monitoring system 2 includes a navigation circuit unit 40 built in the housing 10, a tilt detection unit 50 built in the housing 2, a transmission unit 60 built in the housing 10, and a portable car navigation system. It is formed from the device 1 and a receiving device 90 at a remote position.

  The receiving device 90 is, for example, a mobile phone, and is specified by an e-mail address uniquely registered in the mobile phone, and the e-mail address of the mobile phone is registered in advance on the transmission unit 60 side. The transmission information transmitted from the transmission unit 60 is received by the receiving device 90 (mobile phone) corresponding to the electronic mail address.

  The navigation circuit unit 40 includes a current position detection unit 401, a main control unit 402, a display unit 403 for driving image data for displaying image information such as map data on the display surface 20, a voice output unit 404, a data A storage unit 405, a ROM 406 as a main storage memory, a RAM 407 for storing a program, a lock control unit 408 for locking the navigation circuit unit 40 to an inoperable state, an input password, and a pre-registered password A password determination unit 409 that determines whether the password matches the password, a lock release unit 410 that releases the lock state by the lock control unit 408 based on the determination result of the password match by the password determination unit 409, and the number of password mismatches by the password determination 409 Failure to detect that the number of times has been continuously exceeded And a 致回 number detection unit 411 Prefecture.

  The data storage unit 405 includes a map data storage area 411 for storing map data for route search, and a facility data storage area for storing data relating to various facilities such as hotels, parking lots, public facilities, and shopping centers. 412.

  The map data includes roads (routes) as nodes and node positions as inflection points, links as paths connecting the nodes, and cost information (distance and required time) of all links as data. The route search refers to this map data and sequentially searches for a link from the departure node to the destination node, and traces the node and link with the smallest cost information of the link as a guide route. As a result, the shortest route can be guided to the user. As such a route search method, a method called label determination method or Dijkstra method is used.

  When the optimum route from the starting point to the destination obtained by route search using the map data as described above is searched, guide route data is created. The guide route data includes road data and guidance data on the map in addition to the data of the optimum route, and is displayed on the display screen. Then, a guide route and a mark indicating the current position of the navigation device are superimposed on a map of a fixed scale and a fixed range including the current position measured by the current position detection unit 401, and the current position mark is placed at the center of the display screen. Display as follows. When the apparatus has a voice guidance function, guidance (guidance) to the user is performed by voice output.

  The inclination detection unit 50 detects that the portable car navigation apparatus 1 is inclined more than a predetermined angle from the state where it is attached to the vehicle. The detection output of the tilt detection unit 50 is supplied to the main control unit 402 to operate the lock control unit 408, lock the navigation circuit unit 40 in an inoperable state, and set the portable car navigation device 1 in an inoperable state. It is supposed to be.

  Next, the operation of the portable car navigation apparatus 1 configured according to the above-described embodiment of the present invention will be described.

  As shown in FIGS. 1 and 2, the portable car navigation device 1 is attached in a state of being suspended from a dashboard. This attachment is achieved by attaching the housing 10 to a stand 70 fixed to the dashboard. More specifically, the mounting bracket 30 is fixed to the housing 10 by bolts 80, and the coupling plate 302 of the mounting bracket 30 is coupled to the coupling frame 704 of the coupling portion 702 of the stand 70.

  The case where the portable car navigation apparatus 1 is detached from the dashboard will be described with reference to FIGS. The removal of the portable car navigation apparatus 1 is performed by lifting the housing 10 upward with the lever 705 pulled down and sliding the coupling plate 302 away from the coupling frame 704.

  At the time of this removal, the portable car navigation device 1 is greatly inclined more than a predetermined angle. The inclination detection unit 50 detects an inclination greater than the predetermined angle. The detection output of the tilt detection unit 50 is sent to the main control unit 402, and the main control unit 402 operates the lock control unit 408 by this detection output to lock the operation of the navigation circuit unit 40. As a result, the navigation circuit unit 40 becomes inoperable. This locked state can be released by inputting a password preset by a proper owner.

  Therefore, even if the portable car navigation device 1 once removed due to the theft is to be attached to the dashboard of another vehicle and used again, it cannot be operated because it is locked in an inoperable state by the lock control unit 408. When a legitimate user reattaches to another vehicle due to replacement of the vehicle or the like, the password is input, the lock control unit 408 is controlled by the main control unit 402, and the locked state is released.

  In the present embodiment, the number of times that the passwords are continuously mismatched is further detected by the mismatch count detection unit 411 so that the lock cannot be easily released by inputting an appropriate password. That is, it is determined by the determination unit 409 that the input password is not valid, and when this determination is greater than or equal to a predetermined number of times, an unauthorized use detection output is obtained from the mismatch number detection unit 411. With this detection output, the transmission unit 60 transmits information to that effect together with the current position information of the portable car navigation device 1 to the reception device 90, so that the reception device 90 can accurately grasp the theft situation. Appropriate measures can then be taken immediately.

  It should be noted that, as soon as it is determined by the determination unit 409 that the input password is not valid, regardless of the number of mismatches of the input password as in the above embodiment, the transmission unit 60 sends the information to that effect to the portable car navigation device. It can also be configured to transmit to the receiving device 90 together with the current position information of one.

  In the above embodiments, the present invention has been described by taking a portable car navigation device as an example of a vehicle-mounted electronic device. However, the present invention is not limited to this and can be applied to other vehicle-mounted electronic devices.

FIG. 1 is a side view showing a state where an in-vehicle electronic device according to an embodiment of the present invention is attached to a vehicle. FIG. 2 is a perspective view showing a state in which the in-vehicle electronic device in FIG. 1 is attached to the vehicle as viewed from the back side. FIG. 3 is a side view showing a state where the in-vehicle electronic device in the embodiment of the present invention is removed from the vehicle. 4 is a perspective view showing a state in which the vehicle-mounted electronic device in FIG. 3 is removed from the vehicle as viewed from the back side. FIG. 5 is a block diagram showing the configuration of the in-vehicle electronic device theft monitoring system in the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Portable car navigation apparatus 2 ... Surveillance system 10 ... Case 20 ... Display surface 30 ... Mounting bracket 40 ... Neuralization circuit unit 50- ... Inclination detector 60 ... Transmitter 70 ... Stand 80 ... Bolt 90 ... Receiver 301 ... Mounting plate 302 ... Connecting plate 401 ... Current position Detection unit 402 ... main control unit 403 ... display unit 404 ... audio output unit 405 ... data storage unit 408 ... lock control unit 409 ... determination unit 410 ... lock release unit 411 ... Mismatch count detection part 701 ... Stand column 702 ... Joining part 703 ... Stand fixing part 704 ... Joining frame 705 ... Lever

Claims (3)

In an in-vehicle electronic device theft monitoring system that monitors an in-vehicle electronic device that is detachably mounted on a vehicle,
The in-vehicle electronic device includes a lock control unit, a removal detection unit provided in the main body of the in-vehicle electronic device, a password determination unit, a lock release unit, a current position detection unit, and a transmission unit. And comprising
The removal detection means is configured to detect that the attitude of the on-vehicle electronic device has changed when the on-vehicle electronic device is removed, and the lock control means is based on a detection output of the removal detection means. To lock the operation of the in-vehicle electronic device to an impossible state,
The password determination means determines a match between the input password and a pre-registered password, the lock release means releases the lock by a match determination output by the password determination means,
When the password determination unit detects a mismatch of passwords, the transmission unit transmits the current position detected by the current position detection unit to a predetermined transmission destination.   The in-vehicle electronic device according to claim 1, wherein the removal detection unit is formed by an inclination detection unit that detects that the in-vehicle electronic device is inclined by a predetermined angle or more.   The in-vehicle electronic device further includes a mismatch number detection unit, and when the mismatch number detection unit detects that the number of password mismatches by the password determination unit is continuously equal to or greater than a predetermined number, the transmission unit is The in-vehicle electronic device theft monitoring system according to claim 1 or 2, wherein the current position detected by the current position detecting means is transmitted to a predetermined transmission destination.

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