JP2010208400A - Vehicle theft prevention cancellation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user carrying a mobile phone 1 smoothly to get on a driver's seat 7. <P>SOLUTION: This vehicle theft prevention cancellation system comprises a mobile phone 1, and a control device mounted on a vehicle and communicating with the mobile phone 1. The mobile phone 1 comprises a first LF receiving part receiving LF signals transmitted from a control device, and a first RF transmission part transmitting RF signals to a control device when the first LF receiving part receives the LF signals. The control device comprises a second LF transmission part 4 for transmitting the LF signals which the mobile phone 1 in an operation area RLF outside a vehicle can receive; a second RF receiving part 8 receiving the RF signals transmitted from the mobile phone 1; and an electric seat control part 9 for moving the driver's seat 7 between a predetermined theft prevention position, at which seating and driving of a vehicle 6 are difficult; and a normal position, at which they are possible. The electric seat control part 9 starts moving from the theft prevention position to the normal position when the second RF receiving part 8 receives the RF signals. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle theft prevention release system including a portable device carried by a user of a vehicle and a control device mounted on the vehicle and performing wireless communication with the portable device.

  2. Description of the Related Art Conventionally, there has been known a vehicle antitheft device that mechanically prevents theft of a vehicle using a driver's seat and steering of the vehicle (see, for example, Patent Document 1).

  In Patent Document 1, the steering wheel is tilted to the lowest position and slid to the longest position in the axial direction by a lock signal of the keyless entry system of the vehicle. At the same time, slide the driver's seat to the forefront and move the seat cushion and seat back so that they touch the steering wheel. Is impossible. Lock the steering wheel and driver's seat in this state. And the maintenance of the locked state is canceled by the unlock signal of the keyless entry system of the vehicle.

JP 2004-231000 A

  The return movement from the locked state to the normal position is started when the vehicle user unlocks the door. In smart key systems that are becoming mainstream in recent years, the door is unlocked when a person carrying the portable device comes near the door. Therefore, even if the driver's seat starts to return to the normal position from that point on, the current operation speed of the electric seat is slow, so even if the user opens the unlocked door, it gets into the driver's seat immediately I can't do anything.

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a vehicle antitheft release system that allows a user carrying a portable device to get into a driver's seat smoothly. It is.

  A feature of the present invention is a vehicle anti-theft release system comprising a portable device carried by a user of a vehicle and a control device that is mounted on the vehicle and performs wireless communication with the portable device. A first LF receiving unit that receives an LF signal transmitted from the control device, and an RF signal to the control device when the first LF receiving unit receives the LF signal. A first RF transmission unit, and the control device transmits the LF signal that can be received by the portable device in an operating area outside the vehicle, and is transmitted by the portable device. A second RF receiver for receiving an RF signal, a predetermined anti-theft position where it is difficult for the driver to sit and drive the vehicle, and a normal position where the driver can sit and drive the vehicle Between the driver and the electric driver And when the second RF receiver receives the RF signal, it becomes difficult for the driver to sit down and drive the vehicle. The movement of the driver's seat from the predetermined anti-theft position to the normal position is started.

According to the characteristics of the present invention, the movement of the driver's seat can be started when a user carrying the portable device enters an operating area outside the vehicle located outside the vicinity of the door. Therefore, compared with the case where the user carrying the portable device performs the unlocking operation near the door and starting the return movement of the driver's seat to the normal position, the start of the return movement can be accelerated. . Specifically, the time can be shortened by the time required to move from the outer periphery of the operating area outside the vehicle to the vicinity of the door and the time from when the door is unlocked until the door is unlocked. Therefore, even if the operating speed of the electric seat is slow, the user can get into the driver's seat smoothly.

  As described above, according to the present invention, it is possible to provide a vehicle theft prevention release system that allows a user carrying a portable device to get into a driver's seat smoothly.

1 is a schematic diagram illustrating an overall configuration of a vehicle antitheft release system according to an embodiment of the present invention. FIGS. 2A and 2B are diagrams for explaining the operation of the vehicle anti-theft release system of FIG. In the vehicle antitheft release system according to the embodiment of the present invention, a flowchart showing a flow from when the user carrying the portable device 1 approaches the operation area RLF until the user opens the door 2 and sits down on the driver's seat 7. It is. FIG. 10 is a flowchart showing a flow from when the user carrying the portable device 1 approaches the operation area RLF until the user opens the door 2 and sits on the driver's seat 7 in the system according to the modified example.

  Embodiments of the present invention will be described below with reference to the drawings. In the description of the drawings, the same parts are denoted by the same reference numerals.

  With reference to FIG. 1, the whole structure of the vehicle antitheft release system concerning embodiment of this invention is demonstrated. The vehicle theft prevention release system includes a portable device 1 that is carried by a user of the vehicle 6 and a control device that is mounted on the vehicle 6 and performs wireless communication with the portable device 1.

  The portable device 1 includes a first LF receiving unit that receives an LF signal transmitted from the control device, and a first LF receiving unit that transmits an RF signal to the control device when the first LF receiving unit receives the LF signal. 1 RF transmitter. The portable device 1 is provided with a lock button and an unlock button. The first RF transmission unit generates an ID code signal and has an antenna (not shown) for transmitting the generated ID code signal. The first LF receiver has an antenna (not shown) similar to the first RF transmitter for receiving a reply request signal. The first LF receiver detects a received radio wave based on the frequency, and outputs a trigger signal to the first RF transmitter when a reply request signal is received from the control device.

The first RF transmitter to which the trigger signal is input generates an ID code signal. The first RF transmission unit also transmits an ID code signal when the lock button or unlock button is operated. This ID code signal is generated by AM-modulating a carrier wave generated by oscillating at a predetermined frequency with an ID code. Further, this ID code adds different bits to the case where a response request signal is further received for the unique ID code unique to the portable device 1, the case where the lock button is pressed, and the case where the unlock button is pressed. Is generated by For this reason, the control device demodulates the ID code signal and extracts the ID code from the ID code signal, thereby determining whether the portable device 1 is a regular portable device 1 and whether the portable device 1 is operated outside the vehicle compartment. It can be determined whether or not it exists in the area and whether the lock button or the unlock button has been operated. In addition,
The propagation distance of the ID code signal is about 5 to 20 m from the portable device 1.

  The control device includes a second LF transmitter 4 that transmits an LF signal that can be received by the portable device 1 in the operation area RLF outside the vehicle, and a second RF that receives an RF signal transmitted by the portable device 1. A mobile unit that controls the receiving unit 8, the electric seat control unit 9 that moves the electric driver's seat 7 provided in the vehicle, the second LF transmission unit 4, the second RF reception unit 8, and the electric seat control unit 9. A machine control unit 10.

  The electric seat control unit 9 is a driver's driver between a predetermined anti-theft position where it is difficult for the driver to sit and drive the vehicle, and a normal position where the driver can sit and drive the vehicle. The sheet 7 is moved.

  The second RF receiver 8 receives the ID code signal with an antenna (not shown), demodulates the received ID code signal, and extracts the ID code from the ID code signal. The second RF receiving unit 8 that has extracted the ID code outputs the extracted ID code to the portable device control unit 10.

  The second LF transmission unit 4 is built in the door handle 3 of the vehicle, generates a reply request signal having a predetermined frequency, and transmits the generated reply request signal via a vehicle exterior antenna (not shown). The transmitted reply request signal is received by the portable device 1 located in the operation area RLF outside the vehicle, but is not received by the portable device 1 located outside the operation area RLF outside the vehicle. The second LF transmission unit 4 will be described as a vehicle-side antenna connected to a driver-seat vehicle-side antenna. In addition to this, the second LF transmission unit 4 further includes a passenger seat. The antenna outside the vehicle interior and the antenna outside the back door vehicle interior may be connected to each other, and a reply request signal may be transmitted from these antennas outside the vehicle interior. A reply request signal is intermittently transmitted from each antenna outside the vehicle compartment. The propagation distance of this reply request signal is about 5 m from each of the antennas outside the vehicle compartment, and the reply request signal forms the operating area RLF of the portable device 1 outside the vehicle compartment near the vehicle. The operation area RLF shown in FIG. 1 shows a case where the second LF transmitter 4 is connected to the driver's seat outside antenna.

  The door handle 3 of the vehicle incorporates a request switch 5 together with the second LF transmission unit 4, and a user carrying the portable device 1 in the operation area RLF outside the vehicle uses the request switch 5. The door lock can be unlocked and locked by pushing down. Therefore, even if a user who does not carry the portable device 1 depresses the request switch 5, the door lock cannot be locked and unlocked.

  Next, with reference to FIG. 2A and FIG. 2B, the operation of the vehicle antitheft release system of FIG. 1 will be described. For example, when the portable device 1 enters the working area RLF from the outside of the operating area RLF outside the passenger compartment, the portable device 1 receives a reply request signal at the first LF receiver. The portable device 1 that has received the reply request signal generates an ID code signal at the first RF transmission unit and transmits the generated ID code signal. The control device receives this ID code signal by the second RF receiver 8. The second RF receiving unit 8 that has received the ID code signal extracts the ID code from this signal and outputs the extracted ID code to the portable device control unit 10. The portable device control unit 10 to which the ID code has been input checks the validity of the portable device 1 by comparing this ID code with a pre-stored unique ID code, and if it is valid, it is added to the ID code. It is confirmed that the portable device 1 has entered the operating area RLF outside the passenger compartment. Then, the return movement of the driver's seat 7 from the anti-theft position to the normal position is started via the electric seat control unit 9. Specifically, the driver's seat 7b is slid forward and the movement to the predetermined normal position (7b) is started from the anti-theft position where the seat back is moved so as to contact the steering wheel 11.

  Referring to FIG. 3, in the vehicle anti-theft release system according to the embodiment of the present invention, the user carrying portable device 1 opens door 2 and sits on driver's seat 7 after approaching operation area RLF. The flow until is explained.

  (A) First, when a user carrying the portable device 1 approaches the operation area RLF (S01), for example, when the portable device 1 enters the operation area RLF from outside the operation area RLF outside the vehicle compartment, the operation proceeds to S03. Proceeding to the stage, the portable device control unit 10 detects that the valid portable device 1 has entered the operation area RLF outside the vehicle compartment. Simultaneously with detection of entry of the portable device 1 into the operation area RLF, the electric seat control unit 9 starts the return movement of the driver's seat 7 from the anti-theft position (7a) to the normal position (7b).

  (B) Thereafter, the user carrying the portable device 1 moves from the outer edge of the operation area RLF to the vicinity of the request switch 5 built in the door handle 3, and performs a push-down operation of the request switch 5 in step S05. If the push-down operation of the request switch 5 is accepted, the process proceeds to step S07, and the door 2 is unlocked. Thereby, the user who carries the portable device 1 can open the door 2.

  (C) On the other hand, the return movement of the driver's seat 7 started in S03 ends in step S09. Thereby, the user carrying the portable device 1 can get on the driver's seat 7.

  Next, with reference to FIG. 4, in the system according to the comparative example, the flow from when the user carrying the portable device 1 approaches the operation area RLF until the door 2 is opened and the driver's seat 7 is seated will be described. To do.

  (I) First, when the user carrying the portable device 1 approaches the operating area RLF (S51), for example, when the portable device 1 enters the operating area RLF from outside the operating area RLF outside the vehicle compartment, the processing proceeds to S53. Proceeding to the stage, the portable device control unit 10 detects that the valid portable device 1 has entered the operation area RLF outside the vehicle compartment.

  (B) Thereafter, the user carrying the portable device 1 moves from the outer edge of the operation area RLF to the vicinity of the request switch 5 built in the door handle 3, and performs a push-down operation of the request switch 5 in step S55. If the push-down operation of the request switch 5 is accepted, the process proceeds to step S57 and the door 2 is unlocked. Thereby, the user who carries the portable device 1 can open the door 2. Simultaneously with the unlocking of the door 2, the electric seat controller 9 starts the return movement of the driver's seat 7 from the anti-theft position (7a) to the normal position (7b).

  (Ha) The return movement of the driver's seat 7 started in S57 ends in step S59. Thereby, the user carrying the portable device 1 can get on the driver's seat 7.

  Here, the time from entry detection (S03, S53) into the operation area RLF of the portable device 1 to the push-down operation (S05, S55) of the request switch 5 is set to “t1”, and the push-down operation (S05, S55, S55). The time from S55) to unlocking and opening the door 2 (S07, S57) is “t2”, and the time from the start of the return movement of the driver's seat 7 to the end is “t3”.

In the flowchart according to the embodiment of the present invention shown in FIG. 3, the movement of the driver's seat 7 from when the user carrying the portable device 1 enters the operation area RLF located outside the vicinity of the door (S03). Can be started. Therefore, compared with the flowchart of FIG. 4 in which the return movement to the normal position of the driver's seat 7 is started from when the user carrying the portable device 1 performs the unlocking operation near the door (S57). The start of movement can be accelerated. Specifically, the time is shortened by the time t1 from the outer periphery of the operation area RLF outside the vehicle to the vicinity of the door and the time t2 from the door unlocking operation to the door unlocking and opening. be able to. Therefore, even if the operating speed of the electric seat is slow, the user can get into the driver's seat 7 smoothly.

  When the walking speed of a person is 1 m / second, 5 seconds (= t1) is required for a 5m walk, and 1 second (= t2) is required from when the request switch 5 is pressed until unlocking, When it takes 10 seconds (t3) to return the seat back to the normal position where the user can get on, as shown in the equation (1), when the user carrying the portable device 1 enters the working area RLF (S03, The time from S53) to completion of the return movement of the driver's seat 7 (S09, S59) can be reduced by 37.5%.

t3 / (t1 + t2 + t3) = 0.625 (1)
Therefore, if the seat position is started to return in advance, the efficiency can be improved by 37.5% and the dissatisfaction given to the user is reduced. As a result, when the owner opens the door 2 and gets into the vehicle 6, the driver's seat 7 has already returned to the normal position and can get in smoothly.

  As mentioned above, although this invention was described by one embodiment and its modification, it should not be understood that the statement and drawing which form a part of this indication limit this invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art. That is, it should be understood that the present invention includes various embodiments and the like not described herein. Therefore, the present invention is limited only by the invention specifying matters according to the scope of claims reasonable from this disclosure.

DESCRIPTION OF SYMBOLS 1 Portable machine 2 Door 3 Door handle 4 2nd LF transmission part 5 Request switch 6 Vehicle 7, 7a, 7b Driver's seat 8 Second RF receiving part 9 Electric sheet control part 10 Portable machine control part 11 Steering wheel 21 RF Transmitter circuit RLF operating area

Claims (1)

A vehicle antitheft release system comprising a portable device carried by a user of a vehicle and a control device mounted on the vehicle and performing wireless communication with the portable device,
The portable device is
A first LF receiver that receives an LF signal transmitted from the control device;
A first RF transmitter that transmits an RF signal to the control device when the first LF receiver receives an LF signal;
The control device includes:
A second LF transmission unit that transmits an LF signal that can be received by the portable device in an operation area outside the vehicle;
A second RF receiver for receiving an RF signal transmitted by the portable device;
Electric drivers equipped in the vehicle between a predetermined anti-theft position where it is difficult for the driver to sit and drive the vehicle and a normal position where the driver can sit and drive the vehicle An electric seat controller that moves the seat,
The electric seat control unit starts the movement of the driver's seat from the anti-theft position to the normal position when the second RF receiving unit receives an RF signal. system.

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