JP2008189167A - Anti-theft method for saddle riding vehicle and anti-theft device for saddle riding vehicle used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft method for a saddle riding vehicle and an anti-theft device for a saddle riding vehicle used therefor capable of performing certification of ID by an immobilizer even without a power source from a battery, making traveling of the vehicle impossible until the authentication of ID is completed, and preventing an engine from being suddenly stopped during traveling. <P>SOLUTION: In the anti-theft method for the saddle riding vehicle, power source is fed to an ignition control device of an engine, engine-starting operation for starting the engine is performed, after ID inputting operation for continuing operation of the engine is performed during operation of the engine, ID inputted by the immobilizer is checked and certified, allowance or non-allowance of engine operation is determined based on the ID certification result, and continuation or stopping of operation of the engine is performed. Till the ID authentication is completed from starting operation of the engine, when a front wheel or a rear wheel of a vehicle body is not switched on, non-allowance of operation of the engine is determined to stop the operation of the engine. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for preventing the theft of a saddle vehicle when the power is not supplied from the battery to the immobilizer, such as when the battery is not mounted, and an antitheft device for the saddle vehicle used therefor. is there.

  When starting the engine of the saddle riding vehicle, ID authentication by an immobilizer is performed in order to prevent unauthorized engine start due to theft. Since this immobilizer requires power, it is performed by supplying power from a battery. However, when power for ID authentication cannot be obtained, such as when a batteryless saddle vehicle or when the battery voltage is low, the engine cannot be started and the vehicle cannot be driven.

  Under such a problem, the applicant of the present application starts the engine and drives the generator before ID verification, ensures the power supply voltage necessary for ID verification even without battery, and the verification result In response to this, an application was made for a device for preventing unauthorized operation of an engine based on ID collation in which the engine operation is continued or stopped (see Patent Document 1). In this apparatus, when authentication is not obtained, for example, when the ID is different or the ID is not input, the engine operation is disallowed after a predetermined time and the engine is stopped.

Japanese Patent Laid-Open No. 2001-18753

  However, when using the ID collation prevention device for preventing unauthorized operation of the engine described in Patent Document 1, the ID collation apparatus can be operated without a battery. The vehicle can travel before the ID authentication. Therefore, even if the engine is started by an illegal act, the vehicle can be driven for a predetermined time. That is, it is possible to form a time zone in which the vehicle can be driven by fraud. Therefore, by repeating this, the vehicle can be driven intermittently, but it is difficult to reliably prevent fraud such as theft. In addition, if the authorized user intends to input the correct ID but incorrectly inputs it, the engine is stopped because authentication by the immobilizer cannot be obtained. At this time, since it is assumed that the authorized user has input the correct ID, the vehicle is driven immediately after the ID is input. Therefore, the engine may suddenly stop during operation.

  The present invention is based on the above prior art, and can authenticate an ID by an immobilizer without a power source from a battery. The vehicle cannot travel until the ID authentication is completed. It is an object of the present invention to provide a method for preventing theft of a saddle vehicle that prevents the engine from suddenly stopping, and an antitheft device for a saddle vehicle used in the method.

  In order to achieve the above object, according to the first aspect of the present invention, power is supplied to an engine ignition control device, an engine start operation for starting the engine is performed, and the operation of the engine is continued during operation of the engine. After performing the ID input operation, the ID input by the immobilizer is collated and authenticated, and based on the ID authentication result, permission or non-permission of engine operation is determined, and the engine operation is continued or stopped. The anti-theft method of a saddle vehicle that performs the above-described operation, when there is no input of the brake switch on either the front wheel or the rear wheel of the vehicle body between the engine start operation and the completion of the ID authentication, Provided is a method for preventing theft of a saddle-ride vehicle, wherein non-permission of engine operation is determined and operation of the engine is stopped.

  According to a second aspect of the present invention, in the first aspect of the present invention, the ID is a pattern in which on / off operations of brake switches for the front wheels and the rear wheels are combined.

  According to a third aspect of the present invention, in the first aspect of the present invention, the ID is a radio signal transmitted from a transponder.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the ID is a pattern in which an on / off signal by a switch provided in the vehicle body is combined.

  Furthermore, in the invention of claim 5, there is provided an antitheft device for a saddle vehicle used in the antitheft method for a saddle vehicle according to any one of claims 1 to 4, wherein the ID is collated with the immobilizer. A CPU is provided, and the CPU is provided with a program for recognizing whether or not the front and rear brake switches of the vehicle body are input during the engine start operation and the ID input operation. An anti-theft device is provided.

  According to the first aspect of the present invention, the engine is stopped when neither the front wheel nor the rear wheel brake switch is input after the engine start operation is performed until the ID authentication is completed. That is, from the start of the engine to the completion of ID authentication, since either the front wheel or the rear wheel brake of the vehicle is applied, the engine is rotating but the vehicle cannot be driven. . Therefore, the ID can be authenticated by the immobilizer without the power from the battery, and the vehicle cannot be driven until the ID authentication is completed, and the engine does not stop suddenly during the driving.

  According to the second aspect of the present invention, since the input ID is a pattern that combines the on / off operation of the brake switches for the front wheels and the rear wheels, the user's attention during pattern input is applied to the brake switches. Therefore, it is possible to prevent both brake switches from being turned off by mistake until the ID authentication is completed. In addition, the operation is simple when inputting, and the user can easily remember the ID pattern.

  According to the invention of claim 3, since the input ID is a radio signal transmitted from the transponder, it is not necessary to manually input the pattern of the ID by the user. Therefore, the user can concentrate on not turning off both brake switches until the ID authentication is completed, and can prevent the engine from being erroneously stopped.

  According to the fourth aspect of the present invention, since the input ID is a pattern that combines the on / off signals from the switches provided in the vehicle body, the ID pattern can be formed using a switch that is easy to use and easy to remember. For this reason, it can concentrate on not turning off both brake switches comparatively, and it can prevent that an engine stops accidentally.

  According to the invention of claim 5, the CPU for collating the ID is provided with a program for recognizing whether the front and rear wheel brake switches are input from the engine start operation to the completion of the ID authentication. For this reason, the engine is stopped when there is no input from both the front wheel and the rear wheel brake switches after the engine start operation and before the ID authentication is completed. That is, until the ID authentication is completed, since either the front wheel or the rear wheel of the vehicle is braked, the engine is rotating, but the vehicle cannot be driven. Therefore, it is possible to authenticate the ID by the immobilizer without the power from the battery, and make it impossible for the vehicle to travel until the ID authentication is completed, thereby preventing the engine from suddenly stopping during traveling. Can do.

  The present invention supplies power to an engine ignition control device, performs an engine start operation for starting the engine, and performs an ID input operation for continuing the operation of the engine during the operation of the engine. An antitheft method for a saddle vehicle that authenticates by collating the ID input by the immobilizer, determines whether to permit or disallow engine operation based on the ID authentication result, and continues or stops the engine operation. If there is no brake switch input on either the front wheel or the rear wheel of the vehicle body between the engine starting operation and the completion of the ID authentication, it is determined that the engine operation is not permitted, The operation of the engine is stopped, and the ID can be authenticated by the immobilizer without the power from the battery. Is impossible to travel of the vehicle, an anti-theft device for a saddle riding vehicle using antitheft method and to a straddle vehicle will not suddenly engine during running is stopped.

  FIG. 1 is a schematic view of a straddle vehicle antitheft device used in a straddle vehicle antitheft method according to the present invention.

  As shown in the figure, the immobilizer 1 provided in the antitheft device according to the present invention is disposed in a vehicle body (not shown) of a saddle-ride vehicle such as a motorcycle. The vehicle body is provided with a power supply device 2 composed of a generator provided in a battery or an engine, a main switch 3, a front wheel brake switch 4 and a rear wheel brake switch 5 of the vehicle body. Further, the vehicle main body is provided with a CDI unit 6 that is an ignition control device for an engine (not shown) and a meter unit 7 that is composed of various instruments. Reference numeral 8 denotes a brake lamp that is turned on when one of the brake switches 4 and 5 is input.

  The immobilizer 1 includes a CPU 9, a power supply circuit 10, a brake signal control circuit 11, a main switch input circuit 12, an output power supply control circuit 13 composed of an FET, and an LED drive circuit 14. The power supply circuit 10 supplies power from the power supply device 2 to the CPU 9 regardless of the input of the main switch 3. The brake signal control circuit 11 outputs the input result of the brake switches 4 and 5 to the CPU 9 and turns on or off the brake lamp 8. The main switch input circuit 12 outputs the input result of the main switch 3 to the CPU. The LED drive circuit 14 turns on a display lamp (not shown) provided in the meter unit 7 based on the output from the CPU 9.

  When the main switch 3 is turned on, if the output power control circuit 13 is on, the circuit from the power supply device 2 to the CDI unit 6 is communicated. When the power supply device 2 is a battery, the power is supplied to the CDI unit 6 as it is, and the engine is ignited for operation. In the case of a battery-less vehicle main body, the power supply device 2 is a generator provided in the engine, and the power is generated by rotating the engine with a kick starter or the like, and this electric power is supplied to the CDI unit 6.

  The CPU 9 collates and authenticates whether or not the input ID is a correct ID, and determines whether or not to permit engine operation. When the ID is a pattern in which the on / off operation of the brake switch is combined, the signal is input from the brake signal control circuit 11. For example, when the ID is a radio signal transmitted from a transponder provided on a key (not shown) of an ignition switch, the signal is received when the key is inserted into a key cylinder (not shown) or rotated after being inserted. Input by radio. Further, when the ID is a pattern in which an on / off signal by a switch provided in a vehicle body such as a high beam or a hazard lamp is combined, the signal is input. Furthermore, when the ID is an on / off signal of the main switch 3, the signal is input from the main switch input circuit 12.

  If the input ID does not match the correct ID, the CPU 9 determines that engine operation is not permitted. At this time, the CPU 9 reduces the voltage to the gate of the FET of the output power control circuit 13 and cuts off the current to the CDI unit 6. As a result, engine ignition control is disabled and the engine stops. When the correct ID is input, the CPU 9 permits the engine operation and the engine operation is continued. This is done by holding the output voltage from the CPU 9 at the threshold voltage of the FET gate of the output power control circuit 13. The authentication result of this ID is displayed on a display unit (not shown) such as an LED lamp provided in the meter unit 7 by the LED drive circuit 14.

  If neither the brake switch 4 nor the brake switch 5 is turned on between the start of the engine and the completion of ID authentication, the CPU 9 immediately cuts off the current to the CDI unit 6 in the output power control circuit 13. That is, the CPU 9 is provided with an input confirmation program for the brake switches 4 and 5, and the CPU 9 monitors the inputs of both the brake switches 4 and 5. Therefore, the user must always turn on one of the brake switches 4 and 5 from the start of the engine to the completion of ID authentication, and cannot drive the vehicle. Therefore, there is no problem that the engine suddenly stops during traveling.

  FIG. 2 is a flow chart of the anti-theft method for saddle riding vehicles according to the present invention.

Step S1:
When driving a saddle vehicle, the user first turns on the main switch. As a result, the generator and the CDI unit 6 provided in the engine can be energized. Therefore, in the output power control circuit composed of FETs, the CDI unit is connected to power supply devices such as a battery and a generator.

Step S2:
In the case of a battery-less straddle vehicle, or when a battery is installed but the power supply voltage is low, the engine is rotated by a kick starter or the like. As a result, power is supplied from the generator provided in the engine to the CDI unit, and power is also supplied to the CPU provided in the immobilizer. When the battery is mounted and the voltage is sufficient, power is supplied from the battery to the CDI unit and the CPU by turning on the main switch. As a result, a voltage higher than the threshold value is applied from the CPU 9 to the gate of the FET of the output power supply control circuit 13, and the output power supply control circuit 13 is turned on.

Step S3:
In step S2, since power is supplied to the CPU, the CPU starts monitoring whether either the front wheel or the rear wheel brake switch is on. That is, it is monitored whether both brakes are released.

Step S4:
In step S2, since power is supplied to the CDI unit, ignition is possible and the engine is started.

Step S5:
The user inputs the ID. As described above, this ID includes an on / off pattern of a brake switch and other switches, or a radio signal by a transponder.

  If the input ID is a pattern that combines the on / off operation of the brake switches for the front wheels and the rear wheels, the attention of the user during pattern input is applied to the brake switches. Therefore, it is possible to prevent both brake switches from being turned off by mistake until the ID authentication is completed. In addition, the operation is simple when inputting, and the user can easily remember the ID pattern.

  When the input ID is a radio signal transmitted from the transponder, manual ID pattern input by the user is not required. Therefore, the user can concentrate on not turning off both brake switches until the ID authentication is completed, and can prevent the engine from being erroneously stopped.

  When the ID to be input is a pattern combining an on / off signal by a switch provided in a vehicle body such as a high beam, a hazard lamp, or a main switch, the ID pattern can be formed by using a switch that is easy to use and remember. For this reason, it can concentrate on not turning off both brake switches comparatively, and it can prevent that an engine stops accidentally.

Step S6:
In the CPU, the input ID is collated and ID authentication is performed.

Step S7:
After the ID authentication in step S6, the CPU ends the monitoring of whether either the front wheel or the rear wheel brake switch is on.

Step S8:
When the ID input in step S6 is correct, the CPU determines that the continuation of engine operation is permitted.

Step S9:
If the ID input in step S6 is incorrect, the CPU determines that continuation of engine operation is not permitted. Further, if a state occurs in which neither the front wheel nor the rear wheel brake switch is on during step S4 to step S6, the CPU determines that the continuation of the engine operation is not permitted. That is, in the case of a saddle-ride vehicle, engine operation is not permitted when both brakes are released. After judging the non-permission, the CPU immediately lowers the gate voltage of the FET of the output power control circuit, disconnects the power supply device and the CDI unit in the output power control circuit, and cuts off the current to the CDI unit.

  In this way, if the brake switch of either the front wheel or the rear wheel is not input from the start of the engine to the completion of ID authentication, the engine operation is not permitted and the engine stops. The user cannot drive the vehicle. Therefore, it is impossible for the vehicle to travel for a predetermined period of time due to fraud, and there is no occurrence of problems such as sudden stoppage of the engine during traveling.

Step S10:
Since permission of engine operation is determined in step S8, engine operation is continued.

Step S11:
Since it is determined in step S9 that engine operation is not permitted, the CDI unit cannot perform ignition control and the engine is stopped.

It is the schematic of the anti-theft device of the saddle vehicle used for the anti-theft method of the saddle vehicle according to the present invention. It is a flowchart figure of the antitheft method of the saddle-riding vehicle concerning this invention.

Explanation of symbols

1: immobilizer, 2: power supply device, 3: main switch, 4: front wheel brake switch, 5: rear wheel brake switch, 6: CDI unit, 7: meter unit, 8: brake lamp, 9: CPU, 10: power circuit 11: Brake signal control circuit, 12: Main switch input circuit, 13: Output power supply control circuit, 14: LED drive circuit

Claims (5)

Supply power to the engine ignition control device, perform an engine start operation to start the engine,
After performing the ID input operation for continuing the operation of the engine during the operation of the engine,
An antitheft method for a saddle vehicle that authenticates by collating the ID input by the immobilizer, determines whether to permit or disallow engine operation based on the ID authentication result, and continues or stops the engine operation. There,
If there is no brake switch input on either the front wheel or the rear wheel of the vehicle body between the engine starting operation and the completion of the ID authentication, it is determined that the operation of the engine is not permitted, A method of preventing theft of a saddle-riding vehicle, characterized by stopping driving.   2. The method of preventing theft of a straddle vehicle according to claim 1, wherein the ID is a pattern obtained by combining on / off operations of brake switches for the front wheels and the rear wheels.   The method according to claim 1, wherein the ID is a radio signal transmitted from a transponder.   2. The method of preventing theft of a saddle-ride vehicle according to claim 1, wherein the ID is a pattern in which an on / off signal by a switch provided in the vehicle body is combined. A theft prevention device for a saddle vehicle used in the method for preventing theft of a saddle vehicle according to any one of claims 1 to 4,
The immobilizer is equipped with a CPU for checking the ID,
The CPU is equipped with a program for recognizing the presence or absence of input of brake switches on the front and rear wheels of the vehicle body during the engine start operation and the ID input operation. .

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