KR100198092B1 - Antitheft vehicle security sytem - Google Patents

Abstract

The present invention relates to a vehicle anti-theft system, comprising: anti-theft warning means for determining whether the vehicle is infringed and performing a control operation according thereto: sharing data with the anti-theft warning means and controlling the engine by the anti-theft warning means Engine control means for controlling the ignition timing according to the starting and running of the engine according to the control of the engine control means; recognizing when the engine control means is removed and the engine control means upon returning to the normal state A control unit for generating a control signal for shutting off the power supplied to the ignition device when the specification is not matched with a reference specification stored in advance; and the power supplied to the ignition device according to the control signal of the control unit. Providing a vehicle anti-theft system comprising a power off means for turning off, When the engine control part of the vehicle is replaced by a conventional engine control part after the battery is removed by a thief having expert knowledge, there is an effect of eliminating the problem that the vehicle is started without the unique ignition key of the vehicle.

Description

Vehicle security system

The present invention relates to a vehicle anti-theft system, and more particularly, to a vehicle anti-theft system for preventing the vehicle from being started or the vehicle anti-theft system is disabled due to the replacement of the engine control unit.

In general, when a vehicle is parked at a location far from the user's living area, the parking lot is frequently frequented due to a sudden increase in the number of vehicles.

In addition, as theft thieves aimed at increasing the number of theft accidents, a vehicle burglar alarm system has been developed and used to automatically generate a siren when an impact is applied to the vehicle after the parking of the vehicle.

In particular, in recent years, due to the impact of environmental noise and the appearance of stealers who have more sophisticated and specialized knowledge, the anti-theft system has also become more sophisticated. Recently, if theft is determined to be stolen, the engine control unit controls the engine of the vehicle. A type of protection system has become popular to prevent the vehicle from starting.

In this type of prevention system, a specially designed engine control unit is used.

However, such a vehicle anti-theft system also has a professional knowledge of thieves, so if the engine control parts of the vehicle are replaced by a conventional engine control means after the battery is removed, the vehicle can be started without the ignition key of the vehicle. The problem arises.

Features of the present invention for achieving the above object, theft warning means for determining whether the vehicle is infringed unauthorizedly and performs a control operation accordingly, and sharing the data with the theft warning means and the engine by the theft warning means Engine control means for controlling, an ignition device for controlling the ignition timing according to the starting and running of the engine according to the control of the engine control means, the engine control means recognizes when removing the engine control when the return to the normal state A control unit for generating a control signal for shutting off the power supplied to the ignition device when the specification of the means is not matched with a reference specification stored in advance, and the power supplied to the ignition device according to the control signal of the control unit. It includes a power off means for turning off.

1 is a circuit diagram of a vehicle anti-theft system according to the present invention.

* Explanation of symbols for main parts of the drawings

10: system control unit 20: anti-theft device

30: engine control unit 40: ignition device

+ B: battery Q: transistor

RY: Relay

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a circuit configuration diagram of a vehicle anti-theft system according to the present invention, which determines whether a battery (+ B) generating a predetermined positive voltage and an arbitrary third party intrudes into a vehicle and performs a control operation accordingly. The anti-theft device 20 to perform, the engine control unit 30 for sharing the data with the anti-theft device 20 and controlling the engine by the anti-theft device 20 and the control of the engine control unit 30 In accordance with the ignition device 40 for controlling the ignition timing according to the start and running of the engine, and recognizes when the battery (+ B) or the engine control unit 30 is removed and the engine control unit 30 when returning to the normal state System control unit 10 for generating a control signal for shutting off the power supplied to the ignition device 40 when the specifications of the engine control unit 30 is mismatched by checking the specifications of the pre-stored specifications. , And the system control Consists of the battery (+ B), the transistor (Q) and the relay (RY) to the on the power to the ignition device 40 on / off from the response to the control signal (10).

Looking at the connection between the transistor Q and the relay RY and the peripheral configuration, the collector terminal receives the power generated from the battery (+ B) and receives the control signal generated from the system controller 10 as the base terminal. A coil that generates a magnetic field by a transistor (Q) that is input to the transistor and is operated on when the control signal is in a high state, and a battery (+ B) power input through an emitter terminal when the transistor (Q) is on. (L) and the switch (SW) for transmitting the battery (+ B) power input by the on-operation when the magnetic field is generated in the coil (L) to the ignition device 40, the coil (L) and the switch ( SW) is a relay RY.

Referring to the preferred operation of the vehicle anti-theft system according to the invention configured as described above are as follows.

When the intruder removes the battery (+ B) or the engine control unit 30 of the vehicle, the system control unit 10 detects this and is initialized. Subsequently, when the battery (+ B) or the engine control unit 30 is remounted, the system control unit 10 reads the enable signal and initializes the specification of the engine control unit 30 that is currently mounted. Read it.

Thereafter, the read projection is compared with a reference specification stored in advance. At this time, it is possible to confirm whether the reference specification is the same part as the original engine control unit and, if necessary, to a program stored in the engine control unit. Reading process may be included. When the specifications are matched through this process, the system controller 10 recognizes the intruder as an inspector or a driver, outputs a control signal to a high state, and maintains it.

However, if there is a mismatch in comparing the specifications through the above-described process, the system controller 10 converts the control signal to a low signal.

When the control signal output from the system controller 10 is in a low state, the transistor Q is turned off and thus no current flows in the coil L in the relay RY.

Since no current flows in the coil, the magnetic field disappears, and the switch SW is turned off.

Due to the off operation of the switch SW, the ignition device 40 is cut off the driving power input from the battery (+ B), so that the combustion chamber ignition operation for further starting or running of the engine cannot be performed.

Providing a vehicle anti-theft system according to the present invention operating as described above, in the case of replacing the engine control parts of the vehicle with the conventional engine control parts after removing the battery by a thief with a professional knowledge of the specific ignition of the vehicle This solves the problem of starting the vehicle without the key.

Claims (3)

Theft warning means for determining whether the vehicle is infringed and performing a control operation accordingly; engine control means for sharing data with the theft warning means and controlling the engine by the theft warning means; An ignition device for controlling the ignition timing according to the starting and running of the engine according to the control: Recognizing this when the engine control means is removed and comparing the specifications of the engine control means with a pre-stored standard specification when returning to the normal state. And a control unit for generating a control signal for cutting off the power supplied to the ignition device when mismatched; and a power cut-off means for turning off the power supplied to the ignition device according to the control signal of the control unit. Vehicle security system. The vehicle anti-theft system according to claim 1, wherein the control unit recognizes even when the power supply is cut off and compares the specification of the engine control means with a previously stored reference specification upon returning to a normal state. The apparatus of claim 1, wherein the power cut-off means comprises a transistor which is turned on / off according to a control signal generated by the controller and a relay element which cuts off the driving power supplied to the telephone apparatus when the transistor is turned off. Vehicle anti-theft system, characterized in that.