JP2007083761A - Vehicular antitheft system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular antitheft system allowing a normal user to easily carry out setting and releasing of a caution state in a vehicle with two antitheft devices of an immobilizer device by ID checking and an alarm device by attitude variation detection. <P>SOLUTION: The vehicular antitheft system is provided with a first antitheft device 20 for checking an ID code 49 written in a mobile device 39 and making an engine inoperative when the ID code differs from a normal ID code; a theft detection device 23 for detecting a theft state of the vehicle; a second antitheft device 21 for giving an alarm when the theft state is detected by the theft detection device 23; and a power-ON/OFF means 24 for turning on and off power to the system. The first antitheft device 20 and the second antitheft device 21 are interconnected by a communication line 38. When checking results of the mobile device 39 are illegal, the first antitheft device 20 gives an alarm signal to the second antitheft device 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle antitheft system using a portable device in which an ID code is written.

  As an anti-theft device for vehicles, an immobilizer type anti-theft device that writes an ID code to a card-type portable device and controls the engine start prohibition and prohibition release by checking the ID code of the portable device with an immobilizer on the vehicle side, An alarm-type antitheft device comprising a sensor for detecting a theft state such as a tilt sensor and an alarm means such as a siren is known.

FIG. 6 is a configuration diagram of an alarm-type antitheft device that detects a theft state and issues an alarm.
The alarm device 15 includes a main switch input detection circuit 14 connected to the battery 10 via the main switch 9 (or relay), a tilt sensor that detects a change in the posture of the vehicle body due to vibrations and inclination with respect to the vehicle body, and detects a theft state. A theft detection means 16 comprising an acceleration sensor, and a control circuit 18 for setting the theft detection means 16 in a warning state at a predetermined timing and driving an alarm device 17 comprising, for example, a siren when a theft state is detected; Have

  This alarm device 15 is set by an operation of a remote controller, for example, after the operation is finished and the main switch 9 (or relay) is turned off. When an authorized user starts driving, a release signal must be sent by remote control operation, for example, to release the alarm state of the alarm device 15 before turning the main switch 9 (or relay) from OFF to ON. Don't be.

FIG. 7 is a configuration diagram of an antitheft device using an immobilizer.
This antitheft device uses, for example, a card-shaped portable device 39. The portable device 39 has a memory 49 in which the ID code of the authorized user is written. The portable device 39 has a transmission / reception circuit 48 and communicates with the immobilizer device 4 on the vehicle side. The portable device 39 further includes a switch 50 for releasing the seat lock and lighting the warning lamp. The immobilizer device 4 collates the ID code at a predetermined timing with the transmission / reception circuit 5, the ID verification circuit 11 for verifying the ID code sent from the portable device 39, and sends a start prohibition signal or prohibition to the ignition unit 12 based on the verification result. The control circuit 6 transmits a release signal, and includes a timer 13 and a memory 7 connected to the control circuit 6. A check start switch 41 is connected to the immobilizer device 4. The collation start switch 41 is used to collate the ID code and turn on the power to make the engine operable when the vehicle starts to be used, as will be described later.

  An ID code of a regular user is written in the memory 7 in advance. When using the vehicle, the collation start switch 41 is first turned on. Thereby, communication is performed between the transmission / reception circuit 5 of the immobilizer device 4 and the transmission / reception circuit 48 of the portable device 39 owned by the user, and the ID code of the portable device 39 is the ID code registered in the immobilizer device 4. Matched.

  If the ID codes match, the main switch 9 (or relay) is turned on, the power is turned on, and the engine can be started.

  On the other hand, if the ID codes do not match or the portable device 39 is not held, the main switch 9 (or relay) is not turned on and the engine cannot be started.

  Such an immobilizer device is automatically in a warning state when the use of the vehicle is finished and the main switch 9 (or relay) is turned off and the power is turned off. The warning is automatically released and the engine can be started.

  A vehicle antitheft device using such an immobilizer is described in Patent Document 1, for example.

JP 2001-71867 A

  However, when the immobilizer device and the alarm device are separately installed in the vehicle (for example, in the case of additional equipment), since the two anti-theft devices operate separately, A warning state release operation is performed on the prevention device. That is, a warning release function is required for each antitheft device. In particular, when an alarm device is additionally provided, the immobilizer device automatically releases the alert state and can start the engine when used by a regular user. A warning state cancellation operation must be performed, which is troublesome. In such a case, it is required to improve usability so that the alarm device can be released without remote control operation.

  The present invention takes the above-described conventional technology into consideration, and in a vehicle equipped with two anti-theft devices, an immobilizer device based on ID verification and an alarm device based on posture change detection, a normal user can set and release a warning state. An object of the present invention is to provide an antitheft device for a vehicle that can be easily performed.

  According to the first aspect of the present invention, there is provided a first antitheft device for collating an ID code written in a portable device and deactivating an engine when it is different from a regular ID code, and a theft detection for detecting a theft state of a vehicle. Anti-theft for a vehicle comprising: a device, a second anti-theft device that issues an alarm when a theft state is detected by the anti-theft device, and a power on / off means for turning on / off power supply to the system In the system, when the first anti-theft device and the second anti-theft device are connected by a communication line and the collation result of the portable device is invalid, the first anti-theft device is the second anti-theft device. An anti-theft system for vehicles is provided, which transmits an alarm signal to the anti-theft device.

  A second aspect of the present invention is the vehicle antitheft system according to the first aspect of the present invention, wherein the system is automatically set to a warning state when the power is turned off by the power on / off means. When the power is turned off by a predetermined operation such as simultaneous operation of a switch, the first anti-theft device transmits a non-set signal in the warning state to the second anti-theft device. To do.

  According to a third aspect of the invention, in the first aspect of the invention, when the collation result of the portable device is a regular ID code, the first antitheft device turns on the power and the second theft A warning state release signal is transmitted to the prevention device.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the first antitheft device is a vehicle antitheft system that communicates with the portable device at predetermined time intervals at all times during travel of the vehicle. The first anti-theft device transmits an alarm signal to the second anti-theft device when it is disconnected.
According to a fifth aspect of the present invention, in the first aspect of the invention, when the first antitheft device detects an operation of opening the fuel lid to refuel, and the collation result of the portable device is a normal ID code, The anti-theft device is characterized by issuing a non-set signal to the second anti-theft device.
According to a sixth aspect of the invention, in the first aspect of the invention, the first anti-theft device issues a non-set signal to the second anti-theft device in conjunction with the operation of opening the seat or the like using the portable device. The second anti-theft device is characterized in that the alarm system is canceled only for a predetermined time.

  According to the first aspect of the present invention, when unauthorized use is determined by the first antitheft device, the engine is deactivated and the second antitheft is detected before the theft state is detected by the antitheft device. Since the alarm is issued by the prevention device, theft can be prevented beforehand.

  According to the invention of claim 2, when the power on / off means (for example, the main switch) is turned off, the antitheft system is set to be automatically set in a warning state. Not set and not set to vigilance. For example, when the power is turned off by a predetermined operation such as pressing another switch together with a power-off operation (for example, long pressing of the collation start switch), the warning state is not set. Thus, for example, when the engine is stopped by turning off the power supply for refueling, no alarm is issued even if the vehicle is moved or the refueling lid is opened.

  According to the invention of claim 3, when the collation result by the first anti-theft device is a regular ID code, the first anti-theft device turns on the power and makes the engine startable. A warning state release command is transmitted to the second anti-theft device. Therefore, when an authorized user uses a vehicle, the troublesomeness of releasing the alert state of the second antitheft device is eliminated.

  According to the invention of claim 4, since the first anti-theft device is always in communication with the driver's portable device while the vehicle is running, for example, when the portable device is dropped while running in a motorcycle, the communication is interrupted. . Therefore, by issuing an alarm from the second alarm device when communication is interrupted, the driver can immediately recognize that the portable device has been dropped.

Also, the motorcycle has an engine stop switch, and the engine can be stopped while the main switch is on. The user may leave the place after confirming that the engine has stopped. In such a case, since the main switch is in the on state, the antitheft device does not enter the alert state. In this case, communication between the user's portable device and the first antitheft device is interrupted. As a result, an alarm is issued from the second anti-theft device, so that the user recognizes that the anti-theft device is not in a warning state and turns off the main switch to set the anti-theft device in a warning state. can do.
According to the invention of claim 5, when a legitimate user stops for refueling during driving, stops the engine, and opens the fuel lid, the alarm device automatically receives a non-set signal of theft warning state. Therefore, it is not necessary for the authorized user to send a non-set signal or a warning release signal, and the refueling operation is performed smoothly.
According to the sixth aspect of the present invention, when the authorized user stops while driving and opens the seat, the alarm device is released for a predetermined time, so that the authorized user does not bother with the second anti-theft device. There is no need to send a set signal or a warning release signal, and when the vehicle stops and opens the seat, the seat opening operation is performed smoothly.

FIG. 1 is a block diagram of an embodiment of the present invention.
The anti-theft system according to this embodiment includes the first anti-theft device 20 made of the immobilizer device shown in FIG. 6 and the second anti-theft device 21 made of the alarm device shown in FIG. ing. The second anti-theft device 21 includes an alarm device 22 such as a siren and a theft detection device 23 composed of sensors for detecting posture changes such as shaking and tilting of the vehicle body. The first and second antitheft devices 20 and 21 are supplied with power from the battery 25 via the main switch 24 (or relay). Reference numeral 26 denotes a fuse. The first antitheft device 20 is provided with an indicator lamp 27 composed of LEDs for displaying a warning that this is in a warning state.

  The second antitheft device 21 is provided with an antenna 28, and is operated by a first button 29a (for alert state setting) and a second button 29b (for alert state release) of the remote controller 29. The second antitheft device 21 is further provided with a contact switch 30 for detecting opening and closing of the sheet. The contact switch 30 issues an alarm when an unauthorized user opens the sheet. The second antitheft device 21 may include a communication device 31 and a GPS device 32. The communication device 31 and the GPS device 32 notify the owner who is away when the vehicle is stolen by the GPS system, for example.

  The second antitheft device 21 is further provided with an LED 33 for displaying a warning that the antitheft device 21 is in a warning state. A flasher lamp 34 is further connected to the second antitheft device 21. The flasher lamp 34 functions as a flasher during normal operation via the flasher relay 35 and lights up or flashes according to the operation state of the second antitheft device 21 to display the operation state. 36 is a flasher switch, and 37 is a backflow prevention diode.

The first antitheft device 20 includes a collation start switch 41, a lock release switch 42 such as a seat or a fuel lid, and a solenoid 43 that locks the seat or the fuel lid. In order to unlock each of the seats and fuel lids with one common unlocking switch 42, the operating method of the switch is changed. For example, when the seat is unlocked, one short press is performed to unlock the fuel lid. In this case, it is done by changing the switch operation method such as two short presses.
The collation start switch 41 turns on the main switch 24 to turn on the power when the vehicle is started to be used, and when this switch is pressed to collate the ID code of the portable device 39 and confirm with the authorized user. It is for supply. Further, the collation start switch 41 is used to turn off the main switch 24 and shut off the power source by, for example, long pressing the switch when the engine is stopped after the use of the vehicle is stopped. That is, the collation start switch 41 performs ID code collation and power supply by operating the collation start switch 41 at the start of use of the vehicle to release the alarm state of the antitheft system, and the same collation start switch at the end of use of the vehicle. The power is turned off by another operation 41 and the antitheft system is set in a warning state. In addition, when it is set as the structure which confirms whether the portable device 39 is near by always transmitting a radio wave from the 1st antitheft device 20 for such an ID check at the time of a vehicle use start. The collation start switch can be omitted.

  An ignition coil 46 is further connected to the first antitheft device 20 via a control device (ECU) 44. A spark plug 47 is connected to the ignition coil 46. An engine stop switch 45 is provided between the ignition coil 46 and the battery 25. By turning off the engine stop switch 45, the power to the ignition coil 46 is cut off and the engine is stopped even when the main switch 24 is in the on state.

  In the antitheft system configured as described above, in the present invention, the first antitheft device 20 and the second antitheft device 21 are connected by a communication line 38. When the use of the vehicle is started, that is, when the anti-theft system is set in a warning state, when the first anti-theft device 20 starts checking the ID code of the portable device 39 and is a legitimate ID code, The main switch 24 is turned on so that the engine can be started, and a warning release command signal is transmitted to the second antitheft device 21 via the communication line 38 (A → B). Upon receiving this warning release command signal, the second anti-theft device 21 immediately releases the warning state without performing a remote control operation by the user.

  FIG. 2 is a flowchart when the alarm device (second antitheft device) is set. (A) shows the flow of automatic setting, and (B) shows the flow of setting by the remote controller. In the embodiment of the present invention, it can be set by either method (A) or (B).

  In the case of (A), when the vehicle is turned off (step S1) and 60 seconds have passed (step S2), this alarm device is automatically set (step S3). At this time, the flasher lights for 3 seconds and the LED blinks continuously. With this operation, the alarm device enters a warning state (step S4). The power-off operation in step S1 is an operation for turning off the main switch 24 by, for example, pressing and holding the collation start switch 41 (FIG. 1).

  In the case of (B), first, the power-off operation of the vehicle is performed as in step S1 of (A) (step T1). Next, the first button (see FIG. 1) of the remote controller is turned on (step T2). As a result, a set signal is transmitted to the alarm device. When the set signal is received, the flasher lights for 3 seconds and the LED lights continuously. When 30 seconds have elapsed after receiving the set signal (step T3), the alarm device is set (step T4). The LED blinks continuously when the system is set. With this operation, the alarm device enters a warning state (step T5).

  FIG. 3 is a flowchart when the alarm device is released from the system to the alert release state. (A) is a flow for automatic release, and (B) shows a flow for release by remote control operation.

  In the case of (A), when the vehicle is used, when the collation start switch 41 (FIG. 1) is turned on (step U1), between the immobilizer device (first antitheft device 20) and the portable device 39, The ID code is collated (step U2). The first anti-theft device 20 determines the verification result (step U3). If the user is a regular ID code user, the main switch 24 (or relay) is turned on to supply power to the system (step U4). Subsequently, a warning release signal is transmitted from the immobilizer (first antitheft device 20) to the second antitheft device 21 via the communication line 38 (FIG. 1) (step U5). When this release signal is received, the flasher lights for 1 second to notify the system release. With this operation, the alarm device is released together with the immobilizer, and the alert state is released (step U6).

  On the other hand, if the ID codes do not match in step U3, an alarm signal is transmitted from the first antitheft device 20 to the second antitheft device 21 via the communication line 38 (step U7). In response to this alarm signal, the flasher blinks for a predetermined time and a siren or buzzer sounds to inform the surroundings of unauthorized use of the vehicle (step U8). When the alarm disappears after a predetermined time has elapsed, the second anti-theft device again enters a warning state (step U9). Thereafter, the second anti-theft device operates to issue an alarm when the theft is detected in the same manner as in the normal alert state.

  In the case of (B), by operating the second button on the remote controller (step V1), the flasher is turned on for 1 second, the system is released, and the alarm state of the alarm device is released (step V2).

  FIG. 4 is a flowchart showing the operation of another function of the anti-theft system of the present invention. This function prevents the alarm device from being activated when the engine is temporarily stopped for refueling or the like.

  In order to stop the engine, a power-off operation (long pressing of the verification start switch) is performed by the verification start switch. At the same time, for example, the unlock switch 42, which is arbitrarily set in advance, is turned on (for example, one short press) (step W1).

  As a result, the main switch 24 is turned off, the vehicle is turned off, and a non-set signal of the anti-theft system is transmitted from the first anti-theft device 20 (step W2). At this time, the LED blinks several times to make the user recognize that the system is not set.

  In this way, in normal system operation, the anti-theft system is set by turning off the power and enters a warning state. However, in the present invention, the anti-theft can be prevented even if the power is turned off by simultaneously pressing two switches. The system is not set to the alert state (step W3).

Thereby, for example, when the engine is stopped by turning off the power supply for refueling, no alarm is issued even if the vehicle is moved or the refueling lid is opened.
The switch operating method for transmitting a warning non-set signal when the power is turned off is the simultaneous operation of pressing the switch 41 and pressing the switch 42 simultaneously in the above embodiment. A method of repeating a short press after a long press, a method of pressing another switch several times in a specific way, or a method that can be turned off by a specific operation method set by an authorized user. Any method may be used.
Further, another method for issuing a warning non-set signal at the time of power-off operation will be described below.
When the fuel lid is opened by the switch 42 when fuel is supplied, the first antitheft device 20 detects this. The first anti-theft device 20 confirms the ID code by always communicating with the portable device at a predetermined interval such as 50 ms. When the operation for opening the fuel lid is performed and the ID code is valid, the first antitheft device 20 operates the solenoid valve 43 (FIG. 1) to unlock the fuel lid, and 2 A non-set signal is output to the anti-theft device 21. As a result, the alarm system of the second anti-theft device 21 is released (not set to the alert state).
Still another method for issuing a warning non-set signal when the power is turned off will be described below.
When the sheet is opened by an operation (for example, long press) of the switch 50 (FIG. 1) of the portable device, the first antitheft device 20 detects this. The first anti-theft device 20 confirms the ID code by always communicating with the portable device at a predetermined interval such as 50 ms. When the operation for opening the seat is performed and the ID code is valid, the first antitheft device 20 operates the solenoid valve 43 (FIG. 1) to unlock the seat, 2 A non-set signal is output to the anti-theft device 21. As a result, the alarm system of the second anti-theft device 21 is released (not set to the alert state).

FIG. 5 is an explanatory diagram of still another function of the anti-theft system of the present invention.
In the vehicle running state (step X1), communication is always performed between the first antitheft device 20 and the portable device 39 at regular time intervals, and the ID code is confirmed (step X2). For example, when a portable device is dropped while traveling on a motorcycle, communication is interrupted. When communication is interrupted, an alarm is issued from the second alarm device (step X3). As a result, the driver can immediately recognize that the portable device has been dropped.

  Further, the motorcycle is provided with an engine stop switch 45 (FIG. 1), and the engine can be stopped while the main switch is on. The user may leave the place after confirming that the engine has stopped. In such a case, since the main switch is in the on state, the antitheft device does not enter the alert state. In this case, communication between the user's portable device and the first antitheft device is interrupted. As a result, an alarm is issued from the second anti-theft device, so the user recognizes that the anti-theft device is not in a warning state and turns off the main switch to set the anti-theft device in a warning state. can do.

  The present invention is applied to a vehicle equipped with an immobilizer (first antitheft device) for checking an ID code written in a portable device possessed by a vehicle user and an alarm device (second antitheft device) such as a siren. it can.

The whole block diagram of the antitheft system of this invention. The flowchart when setting an alarm device (2nd antitheft device). The flowchart at the time of canceling | releasing an alarm apparatus and making it into a warning cancellation | release state. The flowchart which shows operation | movement of another function of the antitheft system of this invention. Explanatory drawing of another function of the antitheft system of this invention. The block diagram of the alarm type anti-theft device which detects a theft state and issues a warning. The block diagram of the antitheft device by an immobilizer.

Explanation of symbols

4: immobilizer device, 5: transmission / reception circuit, 6 control circuit, 7: memory, 9: main switch (or relay), 10: battery, 11: ID verification circuit, 12: ignition unit, 13: timer, 14: main switch Input detection circuit, 15: alarm device, 16: anti-theft device, 17: control circuit, 18: alarm device, 20: first anti-theft device, 21: second anti-theft device, 22: alarm device, 23: Theft detection device, 24: main switch (or relay), 25: battery, 26: fuse, 27: indicator lamp, 28: antenna, 29: remote control, 29a: first button, 29b: second button, 30: contact switch 31: Communication device 32: GPS device 33: LED 34: Flasher lamp 35: Flasher relay 36: Flasher switch 37 Backflow prevention diode, 38: communication line, 39: portable device, 41: verification start switch, 42: lock release switch, 43: solenoid, 44: control device, 45: engine stop switch, 46: ignition coil, 47: ignition plug 48: transmission / reception circuit, 49: memory, 50: switch.

Claims (6)

A first anti-theft device that verifies the ID code written in the portable device and deactivates the engine when different from the regular ID code;
A theft detection device for detecting a vehicle theft state;
A second anti-theft device that issues an alarm when a theft state is detected by the anti-theft device;
In a vehicle anti-theft system comprising power on / off means for turning on / off power supply to the system,
Connecting the first anti-theft device and the second anti-theft device with a communication line;
The vehicle anti-theft system, wherein the first anti-theft device sends an alarm signal to the second anti-theft device when the collation result of the portable device is illegal. A vehicle anti-theft system in which the system is automatically set to a warning state when the power is turned off by the power on / off means,
When the power is turned off by a predetermined operation such as a predetermined switch being operated simultaneously with the power-off operation, the first anti-theft device sends a warning non-set signal to the second anti-theft device. 2. The vehicle antitheft system according to claim 1, wherein the antitheft system is transmitted.   When the collation result of the portable device is a regular ID code, the first antitheft device turns on the power and sends a warning state release signal to the second antitheft device. The antitheft system for a vehicle according to claim 1, wherein The first antitheft device is a vehicle antitheft system that communicates with the portable device at predetermined time intervals at all times during travel of the vehicle,
2. The vehicle antitheft system according to claim 1, wherein when the communication is interrupted, the first antitheft device transmits an alarm signal to the second antitheft device. 3.   When the first antitheft device detects an operation of opening the fuel lid to supply fuel, and the collation result of the portable device is a regular ID code, the first antitheft device 2. The anti-theft system according to claim 1, wherein a set signal is issued. The first anti-theft device issues a non-set signal to the second anti-theft device in conjunction with the operation of opening the seat or the like using the portable device, and the second anti-theft device has an alarm system only for a predetermined time. The antitheft system according to claim 1, wherein the antitheft system is released.

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