JP2004338659A - Anti-theft device for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft device for a motorcycle capable of being simply constituted at low cost and enhancing reliability for anti-theft. <P>SOLUTION: The anti-theft device for the motorcycle is constituted such that a personal identification number is input to CPU 110 of ECU 100 from a personal identification number input device 140 through a cable communication, the personal identification number inputted to the CPU 110 is checked with the personal identification number for checking previously registered on EEPROM 111 and it is determined whether or not both numbers are coincident with each other and when they are coincident with each other, an engine is starting-controlled. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motorcycle anti-theft device that prevents the theft of a motorcycle based on a password input using wired communication.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a technology for preventing theft of a vehicle, for example, a technology described in the following document is known (see Patent Document 1 or Patent Document 2).
[0003]
In the anti-theft device described in Patent Document 1, only when power is supplied to each circuit via the main contact of the key switch for the vehicle, the anti-theft contact of the key switch for the vehicle and the resistor are connected in parallel. It is configured such that the voltage at the connection point between the circuit and the resistor satisfies the reference range, and normal engine control is performed only when the voltage at this connection point satisfies the reference range. That is, it is determined whether or not the main switch has been normally operated based on a predetermined voltage input in conjunction with a vehicular key switch serving as a main switch for supplying and cutting off power. As a result, when the key switch for the vehicle is not operated normally, the voltage at the connection point does not satisfy the reference value, the anti-theft function is activated, and the engine cannot be started.
[0004]
On the other hand, the anti-theft device described in Patent Document 2 performs wireless communication with a transponder built in a key of a vehicle such as a motorcycle or a motorbike, and the key is determined based on information sent from the transponder. An immobilizer is used to identify whether the vehicle is unique or not and to prevent the vehicle from being stolen.
[0005]
The immobilizer includes, for example, a CPU, a power supply unit, an EEPROM, a communication interface, a wireless unit, and the like. Further, the transponder operates based on a radio signal transmitted from the immobilizer, and transmits a signal that is a response to the radio signal to the immobilizer as a radio signal.For example, the transponder receives a radio signal transmitted from the immobilizer. Or an antenna for transmitting information generated on the transponder side, a radio unit for modulating and demodulating a radio signal, an authentication key generation IC for controlling the transponder, and an EEPROM serving as a non-volatile storage means for storing key-specific information And a capacitor or the like corresponding to a secondary battery.
[0006]
[Patent Document 1]
Japanese Utility Model Application Laid-Open No. 6-53771
[Patent Document 2]
JP 2001-12123 A
[Problems to be solved by the invention]
In the conventional technique described in Patent Document 1 described above for preventing theft of a vehicle, even if a vehicle key switch is not normally operated, a predetermined value that satisfies a reference value common to vehicles is used. By incorrectly inputting the voltage from the outside, it is determined that the vehicle key switch has been normally operated, the engine is controlled to start, and the vehicle may be easily stolen. In addition, illegal input of a predetermined voltage that satisfies the reference value from the outside can be easily conceived by anyone having knowledge in the technical field.
[0009]
On the other hand, in the conventional technology described in Patent Document 2 for preventing theft of a vehicle, since an immobilizer and a transponder are used, the configuration becomes complicated, many components are required, and the cost increases. There were drawbacks.
[0010]
Therefore, the present invention has been made in view of the above, and an object of the present invention is to provide a motorcycle anti-theft device which can be configured simply and inexpensively and which has an improved anti-theft reliability.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a password input means for inputting a password for starting and controlling the engine of a motorcycle through wired communication, and a password input means via the wired communication. Receiving the input password, the input password is checked against a previously registered password for collation, and it is determined whether or not the entered password matches the password for verification, If the entered password matches the password for verification, the engine is controlled to start.If the entered password does not match the password for verification, the engine is controlled to start. Control means that does not perform the control.
[0012]
According to the above feature, when the input password matches the pre-registered verification password and the input password is determined to be a legitimate password, the engine is controlled to start. As a result, it is extremely difficult to illegally control the start of the engine, and the antitheft effect can be easily and inexpensively improved.
[0013]
According to a second aspect of the present invention, there is provided the motorcycle anti-theft device according to the first aspect, further comprising a storage unit for storing the password for verification, wherein the control unit is configured to provide a new password provided from outside after the start control of the engine. A new password is set by rewriting the password for verification stored in the storage means to the new password input based on the new password.
[0014]
According to the above feature, when there is a possibility that the security code is leaked, the security code can be rewritten to prevent the illegal control of the engine by the leaked security code and the release of the lock mechanism, thereby preventing theft. .
[0015]
According to a third aspect of the present invention, there is provided the motorcycle anti-theft device according to the first or second aspect, further comprising a lock mechanism for locking the wheels and the steering wheel, wherein the control means includes an input personal identification number and a personal identification number for verification. When the values match, the engine is controlled to start and the wheels and the handle locked by the lock mechanism are unlocked.
[0016]
With the above features, the release / non-release of the lock mechanism is controlled together with the engine control, so that the theft caused by pushing can be prevented.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a diagram showing a configuration of a motorcycle anti-theft device according to one embodiment of the present invention.
[0019]
In FIG. 1, the motorcycle anti-theft device of this embodiment includes an ECU (control unit) 100 that controls a motorcycle engine and controls a locking mechanism of wheels and a steering wheel, and a password that controls the ECU 100 to perform engine control. A password input device 140 is provided for inputting. The ECU 100 and the password input device 140 are supplied with power from the battery 120 via a main switch (key switch) 130.
[0020]
The ECU 100 functions as a control center for driving and controlling the engine of the vehicle, and also functions as a control center for controlling the collation operation of the password input from the password input device 140 and the release / non-release of the lock mechanism. ECU 100 receives a signal output from starter switch 150, a crank angle signal 160, and a signal of TH / S 170, and receives an injector (F / INJ) 180, a fuel pump (F / PUMP) 190, an ignition (IGN) 200, and a lock. The mechanism (solenoid) 210 is controlled.
[0021]
The ECU 100 is configured by a macro computer that performs operation processing based on a program, includes a CPU 110 serving as a control center, an EEPROM 111, and an input / output interface (I / O I / F) 112, and implements the functions described above.
[0022]
The CPU 110 includes a ROM 113 in which programs for performing various processes and the like are stored, and a RAM 114 in which data and the like for performing various processes are stored. When the main switch 130 is operated, the battery 120 is transmitted through the main switch 130. After receiving power supply from the personal computer, the personal identification number is input from the personal identification number input device 140 by wired communication such as CAN communication.
[0023]
When a password is input from the password input device 140 through, for example, wired communication such as CAN communication, the CPU 110 checks the input password against the pre-stored password, and starts the engine according to the verification result. Control. That is, if the input password matches the pre-stored password for verification in the verification result, CPU 110 determines that the input password is a regular password, and A control signal is output to the INJ 180, the F / PUMP 190, the IGN 200, and the lock mechanism (solenoid) 210 to control the drive of the engine, release the lock mechanism of the wheels and the steering wheel, and make the vehicle run. On the other hand, if the input password does not match the pre-stored password for verification in the above verification result, the CPU 110 determines that the input password is not a legitimate password. , F / INJ180, F / PUMP190, IGN200, and does not output control signals to the lock mechanism (solenoid) 210, does not perform drive control of the engine, and does not release the lock mechanisms of the wheels and the steering wheel, thereby disabling the vehicle. And
[0024]
The password for collation to be collated with the inputted password is stored in the EEPROM 111 in advance. The password for collation stored in the EEPROM 111 is arbitrarily rewritable from the outside under the control of the CPU 110. That is, when a password is input to the CPU 110 during the operation of the engine and the input password matches the password for verification stored in the EEPROM 111 in advance, the password can be rewritten. Is rewritten to a new password input after the first password, and the newly input password is stored and registered in the EEPROM 111 as a password for verification.
[0025]
The password input device 140 is a device for inputting a password to the CPU 110 of the ECU 100 from outside through serial communication or parallel communication via wired communication such as CAN communication, for example, and as shown in FIG. The display unit 20 includes an operation unit 21 and a display unit 22.
[0026]
In FIG. 2, the input password is composed of, for example, four digits, and the numerical value of each digit of the password is set by operating the UP key of the operation unit 21 and displayed on the display unit 22. The numerical value set by the SET key 21 is determined, and the password set when the last digit is determined is input to the CPU 110. To clear the set numerical value, the CLE key of the operation unit 21 is operated to invalidate it.
[0027]
Returning to FIG. 1, the lock mechanism 210 is a mechanism that locks the wheels and the handle to prevent the vehicle from being pushed, and is released / non-released by a solenoid that is operated and controlled based on a control signal given from the ECU 100. Done.
[0028]
Next, the processing operation of the above embodiment will be described with reference to the processing flowchart of FIG.
[0029]
In FIG. 3, a main switch (key switch) 130 is operated, power is supplied from the battery 120 to the ECU 100 and the password input device 140 via the main switch 130, and the ECU 100 and the password input device 140 are operable. When the personal identification number is input from the personal identification number input device 140 to the CPU 110 (step S300), it is determined whether or not the input personal identification number matches the personal identification number stored in the EEPROM 111 in advance. This is performed by the CPU 110 (step S301).
[0030]
If the collation result shows that the password input via the password input device 140 does not match the collation password stored in advance in the EEPROM 111, the engine start control and the release of the lock mechanism are not performed. . On the other hand, if the collation result shows that the password input via the password input device 140 matches the collation password stored in advance in the EEPROM 111, it is determined whether the engine is subsequently driven. It is determined (step S302). If the result of the determination is that the engine is not driven, a control signal is provided from the ECU 100 to the lock mechanism 210, and the lock mechanism for the wheels and the handle is released (step S303). Further, a control signal is provided from ECU 100 to F / INJ 180, F / PUMP 190, and IGN 200, and drive control of the engine is started (step S304). Thereby, the two-wheeled vehicle is in a runnable state.
[0031]
On the other hand, if it is determined in step S302 whether the engine is driven or not, if the engine is not driven, a new collation password stored in the EEPROM 111 is replaced with a new collation password. When a password can be input and a password for collation is to be rewritten, a new password is input to the CPU 110 via the password input device 140 (step S305). When the new password is input to the CPU 110, the verification password previously stored in the EEPROM 111 is replaced with the new password input, and the new password input is replaced with the verification password. Is stored in the EEPROM 111 and registered (step S306).
[0032]
As described above, in the above-described embodiment, the lock mechanism is released and the engine is controlled by matching and collating the personal identification numbers, so that the conventional anti-theft device that inputs a predetermined input voltage is used. Therefore, it is extremely difficult to release the lock mechanism and control the engine by an unauthorized means, and it is possible to improve the anti-theft effect.
[0033]
Also, compared to conventional anti-theft devices that use transponders, they have the same anti-theft reliability, and do not require a transponder IC, radio wave amplification circuit, transmitting / receiving antenna, etc., and can be configured simply and inexpensively. Very suitable for motorcycles. Further, since the release / non-release of the lock mechanism is controlled together with the engine control, it is possible to prevent theft caused by pushing.
[0034]
In addition, since the personal identification number is input to the CPU 110 of the ECU 100 via wired communication, the configuration can be simplified as compared with the method of inputting the personal identification number by wireless communication, and the personal identification number can be securely input. Can be. Furthermore, since the password for collation stored in the EEPROM 111 can be arbitrarily rewritten, if there is a possibility that the password is leaked, the password is rewritten and an unauthorized engine based on the leaked password is used. Drive control and the release of the lock mechanism can be avoided to prevent theft.
[0035]
Further, technical ideas other than the claims that can be grasped from the above embodiment will be described below together with the effects.
[0036]
The motorcycle antitheft device according to any one of claims 1, 2 and 3, wherein the personal identification number input device is installed on an instrument panel of the vehicle.
[0037]
With the above features, the user can easily input the personal identification number.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a motorcycle anti-theft device according to an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration example of a password input device provided on an instrument panel.
FIG. 3 is a flowchart showing an operation process according to an embodiment of the present invention.
[Explanation of symbols]
20 instrument panel 21 operation unit 22 display unit 100 ECU
110 ... CPU
111 ... EEPROM
112 ... I / O I / F
113 ... ROM
114 ... RAM
Reference numeral 120: battery 130, main switch 140, password input device 150, starter switch 160, crank angle signal 170, TH / S
180 ... Injector (F / INJ)
190 ... Fuel pump (F / PUMP)
200 ... Ignition (IGN)
210: Lock mechanism (solenoid)

Claims (3)

Via a wired communication, a password input means for inputting a password for starting and controlling the engine of the motorcycle,
The personal identification number received from the personal identification number input means via the wired communication is received, the input personal identification number is compared with a previously registered personal identification number, and the input personal identification number is used as a personal identification number for verification. It is determined whether or not the password matches the password.If the entered password matches the password for verification, the engine is controlled to start, while the entered password and the password for verification are determined. Control means for not performing engine start control in the case of a mismatch, the anti-theft device for a motorcycle. Storage means for storing the password for collation,
The control unit rewrites the collation password stored in the storage unit up to the new password input based on the new password provided from the outside after the start control of the engine. The anti-theft device for a motorcycle according to claim 1, wherein a personal identification number is set. Equipped with a lock mechanism to lock the wheel and handle,
The control means controls the start of the engine and unlocks the wheels and the handle locked by the lock mechanism when the input password matches the password for verification. The anti-theft device for a motorcycle according to claim 1 or 2.

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