JP2005263177A - Anti-theft device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft device capable of restrict a theft person to a vehicle and automatically send theft information. <P>SOLUTION: The anti-theft device 1 is provided with an occupant recognition device 3 for determining whether or not the occupant is a previously registered certified person; an actuator 7a for winding a seat belt 8a when the occupant is a person other than the certified person; a switch lock circuit 20 for locking a buckle switch 6a of the seat belt 8a when the occupant is the person other than the certified person; and an informing circuit 4 for informing a previously set receiving side 11 of the theft information when the occupant is the person other than the certified person. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an antitheft device that protects a vehicle from theft.

For example, Patent Document 1 introduces an anti-theft device that prevents the engine of a vehicle from starting when it is stolen and automatically notifies a preset report destination. Patent Document 2 introduces a theft prevention device that automatically reports image data of a theft to a preset report destination at the time of theft.
JP 2003-182525 A JP 2001-65212 A

  According to the antitheft device described in the above document, theft of the vehicle can be suppressed. However, the thief cannot be bound to the vehicle. For this reason, the thief who notices the report escapes from the vehicle before securing the personality. Therefore, the same thief may be re-offending. Thus, the re-offending deterrence of the conventional anti-theft device is not always satisfactory.

  The antitheft device of the present invention has been completed in view of the above problems. Therefore, an object of the present invention is to provide an anti-theft device capable of restraining a theft person to a vehicle and automatically reporting the theft information.

  (1) In order to solve the above-described problem, the anti-theft device of the present invention includes a passenger recognition device that determines whether or not a passenger is a pre-registered certifier, and a passenger other than the certifier. An actuator that winds up the seat belt, a switch lock circuit that locks a buckle switch of the seat belt when the occupant is a person other than the certifier, and theft information when the occupant is other than the certifier And a reporting circuit for reporting to a preset reporting destination.

  According to the anti-theft device of the present invention, the theft can be restrained to the seat by winding the seat belt. Moreover, the seat belt cannot be detached by locking the buckle switch. For this reason, it can suppress that a thief escapes from restraint by a seatbelt. Then, the theft information can be automatically reported to a preset report destination in a state where the thief is bound to the sheet.

  By the way, as an anti-theft device for restraining the theft, a device for locking the theft in the passenger compartment by locking the door of the vehicle is also conceivable. However, in the case of this anti-theft device, the theft can break the window glass and escape.

  In this regard, the anti-theft device of the present invention uses a seat belt, which is originally used for reducing the collision damage of the occupant at the time of a vehicle collision, as a restraint for the theft. Seat belts are designed to be relatively robust for the original purpose of reducing occupant collision damage. For this reason, it is difficult for the thief to break the seat belt. In addition, the restraining force of the seat belt can be set relatively strong for the original purpose of reducing the collision damage of the occupant. For this reason, it is difficult for the thief to pass through the seat belt and escape. As described above, the antitheft device of the present invention is highly restrained against the theft.

  (2) Preferably, it is preferable to further include a current position detecting device for detecting the current position of the vehicle, and the theft information further includes the current position. When the theft is moving the vehicle or when the report destination is not the owner of the vehicle (for example, when the report destination is the police), the current position of the stolen vehicle is unknown. In this regard, according to this configuration, the current position of the vehicle can be included in the theft information and reported to the reporting destination. For this reason, early detection of a vehicle is easy.

  (3) Preferably, it is more preferable to have a belt lock mechanism that locks the seat belt wound by the actuator with a predetermined restraining force. According to this configuration, even if the actuator is not continuously driven, the thief can be restrained to the seat with a predetermined restraining force.

  According to the present invention, it is possible to provide an anti-theft device capable of restraining a theft person to a vehicle and automatically reporting the theft information.

  Embodiments of the antitheft device of the present invention will be described below.

  First, the structure of the antitheft device of this embodiment will be described. FIG. 1 shows a block diagram of the anti-theft device of this embodiment. As shown in the figure, the anti-theft device 1 of the present embodiment mainly includes a seat belt ECU (Electric Control Unit) 2, an occupant recognition device 3, a notification circuit 4, a current position detection device 5, and an operation. A seat buckle switch 6a, a passenger seat buckle switch 6b, motors 7a and 7b, a driver seat belt 8a, a passenger seat belt 8b, reels 80a and 80b, a collision prediction device 90, and a sudden braking detection device 91 And.

  Among these, the motor 7a is included in the actuator of the present invention. The collision prediction device 90, the sudden braking detection device 91, the seat belt ECU 2, the motors 7a and 7b, the driver seat belt 8a, the passenger seat belt 8b, and the reels 80a and 80b are pre-crash seats. It constitutes a belt device. In addition, the current position detection device 5 is a navigation device.

  The collision prediction device 90 includes a millimeter wave radar and a collision prediction ECU (not shown). The millimeter wave radar is embedded in the center of the front grill (not shown). The millimeter wave radar emits millimeter waves toward the front. The millimeter wave radar can detect a vehicle interval and a relative speed between the preceding vehicle and the host vehicle. The collision prediction ECU determines the possibility of collision from the vehicle interval and relative speed detected by the millimeter wave radar. When the collision prediction ECU determines that the collision is unavoidable, the collision prediction device 90 transmits a collision unavoidable signal to the seat belt ECU 2 described later.

  The sudden braking detection device 91 detects the brake master cylinder pressure. That is, the brake depression force of the driver is detected. When the brake master cylinder pressure exceeds a predetermined threshold value, the sudden braking detection device 91 transmits a sudden braking signal to the seat belt ECU 2 described later.

  The seat belt ECU 2 includes a CPU (Central Processing Unit) 20 and motor drive circuits 21a and 21b. The CPU 20 is included in the switch lock circuit of the present invention. The CPU 20 receives a collision inevitable signal transmitted from the collision prediction device 90 or a sudden braking signal transmitted from the sudden braking detection device 91, and transmits a drive signal to the motor drive circuits 21a and 21b. The motor drive circuit 21a receives a drive signal from the CPU 20 and drives the motor 7a. The motor drive circuit 21b receives the drive signal from the CPU 20 and drives the motor 7b.

  The driver's seat belt 8a is wound around a reel 80a fixed to a rotating shaft (not shown) of the motor 7a. For this reason, the driver is restrained in the driver's seat (not shown) when collision is unavoidable or when sudden braking is performed. In addition, the passenger seat belt 8b is wound around a reel 80b fixed to a rotating shaft (not shown) of the motor 7b. For this reason, the passenger in the passenger seat is restrained by the passenger seat (not shown) when collision is unavoidable or when sudden braking is performed.

  The driver seat buckle switch 6a is attached to the driver seat seat belt 8a. The driver can remove the seat belt 8a by the driver seat buckle switch 6a. The passenger seat buckle switch 6b is mounted on the passenger seat belt 8b. The passenger seat buckle switch 6b allows the passenger in the passenger seat to attach and detach the seat belt 8b.

  The current position detection device 5 includes a GPS (Global Positioning System) antenna 50. Information about the current position of the vehicle is transmitted from the artificial satellite 10 to the GPS antenna 50.

  The occupant recognition device 3 includes an occupant recognition ECU 30 and a CCD (charge coupled device) camera 31. The CCD camera 31 is built in the room mirror (not shown) on the vehicle compartment side. A driver can be imaged by the CCD camera 31. The occupant recognition ECU 30 stores the certifier's physique data (for example, the positions of the body shape, eyes, nose, mouth, eyebrows, etc.) in advance. The occupant recognition ECU 30 can compare this physique data with the actual physique of the driver. The notification circuit 4 can automatically communicate with a preset notification destination 11 via a PHS (Personal Handyphone System).

  The above-described seat belt ECU 2, occupant recognition device 3, notification circuit 4, current position detection device 5, driver seat buckle switch 6a, passenger seat buckle switch 6b, collision prediction device 90, and sudden braking detection device 91 is connected by a communication line of a CAN (Controller Area Network) protocol.

  Next, the movement at the time of vehicle theft of the antitheft device of this embodiment will be described. FIG. 2 shows a flowchart of the antitheft device of this embodiment. When the passenger sits in the driver's seat and wears the seat belt 8a, the driver's seat buckle switch 6a is turned on (S1). When the driver's seat buckle switch 6a is turned on, the CCD camera 31 of the passenger recognition device 3 images the passenger. The imaging data is compared with the certifier's physique data in the passenger recognition ECU 30 (S2). As a result of the comparison, if the passenger is an authenticator, the process is terminated (END).

  As a result of the comparison, when the occupant is not the certifier, the occupant recognition ECU 30 transmits a occupant non-applicable signal to the CPU 20 of the seat belt ECU 2. Upon receiving the passenger inapplicable signal, the CPU 20 transmits a drive signal to the motor drive circuit 21a. Upon receiving the drive signal, the switching element (not shown) of the motor drive circuit 21a is turned on. Then, the motor 7a is driven. By driving the motor 7a, the driver's seat belt 8a is wound around the reel 80a (S3). When the driver's seat belt 8a is wound up by a predetermined amount, a stop signal is transmitted from the CPU 20 to the motor drive circuit 21a. In response to the stop signal, the switching element (not shown) of the motor drive circuit 21a is turned off. For this reason, the motor 7a stops. That is, the rotation of the reel 80a stops.

  When the rotation of the reel 80a stops, the CPU 20 transmits a plunger drive signal to the plunger drive circuit 81a. In response to the plunger drive signal, the switching element (not shown) of the plunger drive circuit 81a is turned on. Then, a current flows through the solenoid 82a. When a current flows through the solenoid 82a, the plunger 83a moves in a direction approaching the reel 80a. A claw 84a is interposed between the plunger 83a and the reel 80a. The claw 84a is urged toward the plunger 83 by a return spring (not shown). Pressed by the plunger 83a, the claw 84a swings in a direction approaching the reel 80a against the urging force of the return spring. On the other hand, a gear 85a is formed on the outer periphery of the reel 80a. For this reason, the swinging claw 84a engages with the gear 85a. By this engagement, the reel 80a is prevented from rotating in the reverse direction, that is, the “driver's seat belt 8a delivery direction”. That is, the driver seat belt 8a is locked (S4). For this reason, the passenger continues to be restrained in the driver's seat with a predetermined restraining force.

  The plunger driving circuit 81a, the solenoid 82a, the plunger 83a, the claw 84a, and the gear 85a constitute the belt lock mechanism of the present invention.

  Further, the CPU 20 locks the driver's seat buckle switch 6a in the on state (S5). That is, even if the passenger presses the driver's seat buckle switch 6a, the passenger's seat belt 8a is not turned off.

  Further, the CPU 20 creates theft information including the vehicle ID, the image data obtained by the passenger recognition device 3, and the current position of the vehicle by the current position detection device 5 (S6). The created theft information is reported from the reporting circuit 4 to a predetermined reporting destination 11 (S7).

  Next, the effect of the antitheft device of this embodiment will be described. According to the anti-theft device 1 of this embodiment, a theft person can be restrained to the driver's seat by winding the driver's seat belt 8a. Further, by locking the driver's seat buckle switch 6a, the driver's seat seat belt 8a cannot be detached. For this reason, it can suppress that a thief escapes from restraint by the driver's seat belt 8a. Then, the theft information can be reported to the report destination 11 while the thief is restrained in the driver's seat.

  In addition, the anti-theft device 1 of the present embodiment uses the driver's seat belt 8a that is originally used for reducing the collision damage of the occupant at the time of the vehicle collision as a restraint tool for the theft. The driver's seat belt 8a is designed to be relatively robust for the original purpose of reducing occupant collision damage. For this reason, it is difficult for a thief to break the driver's seat belt 8a. In addition, the restraining force of the driver seat belt 8a is set relatively strong by the CPU 20. For this reason, it is difficult for the thief to pass through the driver's seat belt 8a and escape. As described above, the antitheft device 1 of the present embodiment has high restraint on the theft.

  Further, the antitheft device 1 of the present embodiment includes a current position detection device 5. For this reason, the current position of the vehicle can be included in the theft information and reported to the reporting destination 11. Therefore, early detection of the vehicle is easy.

  The antitheft device 1 of the present embodiment is configured by combining an existing pre-crash seat belt device and a navigation device. For this reason, the installation cost is low.

  Moreover, the anti-theft device 1 of this embodiment is provided with a belt lock mechanism. For this reason, at the time of restraining the theft, even if the motor 7a is not driven for a long time, the theft can be secured for a long time with a large restraining force.

  The embodiment of the antitheft device of the present invention has been described above. However, the embodiment is not particularly limited to the above embodiment. Various modifications and improvements that can be made by those skilled in the art are also possible.

  For example, in the above embodiment, the CCD camera 31 is used to recognize the passenger, but a fingerprint detection device may be used, for example. Further, for example, an ID chip is built in the driver's license, and the ID code of the ID chip is collated with the ID code stored therein, thereby adopting the passenger recognition device 3 that authenticates the passenger. Also good.

  In the above embodiment, CAN is used as the communication protocol of the communication line. For example, LIN (Local Interconnect Network) may be used as the communication protocol.

  In the above embodiment, as shown in FIG. 2, first, the driver's seat belt 8a is wound up (S3), then the driver's seat buckle switch 6a is locked (S5), and finally the theft information is reported ( S7), this order is irrelevant. For example, theft information may be reported first, then the driver's seat buckle switch 6a may be locked, and finally the driver's seat belt 8a may be wound up.

  Moreover, in the said embodiment, although the driver's seat buckle switch 6a was locked by CPU20, you may lock the driver's seat buckle switch 6a by passenger recognition ECU30, for example. That is, the passenger recognition ECU 30 may be the switch lock circuit of the present invention.

  In the above embodiment, the notification circuit 4 and the notification destination 11 are connected by PHS. For example, the notification circuit 4 is connected to the notification circuit 4 by a mobile communication system such as CDMA (Code Division Multiple Access) or PDC (Personal Digital Communications). The report destination 11 may be connected. Further, the report destination 11 is not particularly limited. It may be the mobile phone of the vehicle owner, the police, or the like. Moreover, the report destination 11 may be plural. The reported theft information may be voice, text, warning sound, or the like. Alternatively, a combination of these may be used. Further, the number of authenticators in the passenger recognition device 3 is not particularly limited. In the above embodiment, the thief is bound to the driver's seat by the driver's seat belt 8a. However, the thief may be restrained to the passenger's seat by the passenger's seat belt 8b.

1 is a block diagram of an anti-theft device as an embodiment of the anti-theft device of the present invention. It is a flowchart of the same antitheft device.

Explanation of symbols

  1: anti-theft device, 2: seat belt ECU, 20: CPU (switch lock circuit), 21a: motor drive circuit, 21b: motor drive circuit, 3: occupant recognition device, 30: occupant recognition ECU, 31: CCD Camera 4: Report circuit 5: Current position detection device 50: GPS antenna 6a: Driver's seat buckle switch 6b: Passenger seat buckle switch 7a: Motor (actuator) 7b: Motor 8a: Driver's seat belt 8b: passenger seat belt, 80a: reel, 80b: reel, 81a: plunger drive circuit, 82a: solenoid, 83a: plunger, 84a: claw, 85a: gear, 90: collision prediction device, 91: sudden braking detection device 10: Artificial satellite, 11: Report destination.

Claims (3)

  An occupant recognition device that determines whether the occupant is a pre-registered certifier, an actuator that winds up a seat belt when the occupant is a person other than the certifier, and the occupant is other than the certifier A switch lock circuit that locks the buckle switch of the seat belt in the case of a person who is a passenger, and a notification circuit that reports theft information to a preset report destination when the passenger is other than the authenticator Anti-theft device. Furthermore, a current position detecting device for detecting the current position of the vehicle is provided,
The antitheft device according to claim 1, wherein the theft information further includes the current position.   The antitheft device according to claim 1, further comprising a belt lock mechanism that locks the seat belt wound by the actuator with a predetermined restraining force.

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