KR20050024020A - Anti-theft system by turn signal for automobile and method for control thereof - Google Patents

Abstract

PURPOSE: A burglarproof system using a turn signal of a vehicle and a control method thereof are provided to execute driving and acceleration/deceleration motions of a staring part only when a certification step of a code set in a password certification circuit is approved after receiving the input of the code through the turn signal of a multi function switch. CONSTITUTION: An input control circuit(30) comprises an ETACS(Electronic Time Alarm Control System,10) and an interface(20) composed of a transistor(23) having a base unit receiving a signal output from the ETACS and a collector unit coupled with a direct current power unit(21) through resistances(R,22) and a capacitor(24) of which one terminal is connected to the base unit of the transistor and the other terminal is coupled with an emitter unit of the transistor. A password certification circuit(40) is composed of an input unit(41) receiving a turn signal of a multi function switch; an input buffer(42) for memorizing a code formed by operating the turn signal inserted through the input unit; a memory element(44) memorizing a pre-set code; and an X-OR gate(45) for comparing and calculating the code of the input buffer and a pre-set code.

Description

Anti-theft system using turn signal of automobile and its control method {Anti-theft system by turn signal for automobile and method for control etc}

The present invention relates to an anti-theft system using a turn signal of a vehicle and a control method thereof, and more particularly, to prevent an entry into an unreasonable unlock state from an arm of a vehicle for preventing theft. Instead of implementing the encrypted start key, theft using the turn signal of the car, which can implement the prevention of theft by judging whether the starter is operated through the authentication process of the password through the input of the encryption code consisting of the turn signal operation of the multi-function switch. A prevention system and a control method thereof.

In general, many methods for preventing theft of automobiles have been developed, and the anti-theft system using ETACS has been applied to actual vehicles.

Existing anti-theft device using the ETACS (Electronic Time Alarm Control System) to maintain the lock state and generates an alarm sound using an alarm horn when not going through the normal unlocking process, through the immobilizer system There is a method to prevent the start-up when violating the authentication process of the encrypted key.

The anti-theft system by the ETACS can be unlocked through the input of the wireless remote controller, and it is common to prevent the start-up by generating a warning sound for abnormal intrusion intention or interrupting the operation of the starter motor.

An abnormal intrusion method has a method of opening a door using a key in a locked state using a wireless remote controller, but in general, when the inserted state of the key continues for a predetermined time, the door is switched to the unlocked state.

This is because the owner of the wireless remote control loses the wireless remote control, but the entry using the inoperable key due to the failure of the remote control is considered to be a normal process, and is intended to block the alarm sound.

By the way, the conventional anti-theft system can not detect the change of the lock condition for the situation such as the forced entry of the physical method such as the break of the window by the intruder, and if the key does not have an encrypted key code, the random operation of the key Intrusion in the unlocked state through the inevitable problem.

Therefore, the present invention has been invented to solve the above problems, instead of the implementation of the encrypted start key as a measure to prevent the entry into an unreasonable unlock (disarm) state from the arm (arm) state of the vehicle for theft prevention In order to prevent theft of the car, it is impossible to operate the starter by invalidating the pass through the authentication process of the password through the input of the encryption code made of the turn signal operation of the multi-function switch. An object of the present invention is to provide an anti-theft system using a turn signal of a vehicle and a control method thereof.

Hereinafter, the features of the present invention for achieving the above object are as follows.

Anti-theft system using the turn signal of the vehicle according to the present invention ETACS (10),

A signal output from the ETACS 10 is input to a base end, and a collector end is connected to a transistor 23 connected through a DC power supply 21 and a resistor R 22, and a base end of the transistor 23. An input control circuit 30 composed of an interface 20 composed of a capacitor 24 having one terminal connected thereto and an emitter portion of the transistor 23 connected to the other terminal;

An input unit 41 into which the turn signal of the multifunction switch 100 is input, an input buffer 42 in which an encryption code consisting of a turn signal manipulation input through the input unit 41 is stored, and a preset encryption code is stored And a password authentication circuit 40 including an memory element 44 and an X-OR gate 45 for comparing and calculating the encryption code of the input buffer 42 with a predetermined encryption code.

The control method of the anti-theft system using the turn signal of the vehicle according to the present invention comprises the steps of determining whether the keyhole is inserted into the ignition key;

When the ignition key is inserted into the keyhole, inputting the turn signal to the input unit 41 of the password authentication circuit 40 and storing it as an encryption code in the input buffer 42;

Comparing and comparing the encryption code of the turn signal operation stored in the input buffer 42 with the encryption code previously stored in the memory device 44 through the code input terminal 43 at the X-OR gate 45; ;

When the output value calculated by the X-OR gate 45 is 0, it characterized in that it comprises a step to enable the driving and deceleration / acceleration operation of the starter 46.

In addition, when the output value calculated by the X-OR gate 45 is 1, the locked state is maintained as it is, and the input buffer 42 is reset to prepare to enable re-entry of the encryption code. It characterized in that it further comprises.

Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.

1 is a circuit diagram showing the configuration of an anti-theft system using a turn signal of a vehicle according to the present invention, Figure 2 is a block diagram showing the operation principle of the anti-theft system using a turn signal of a vehicle according to the present invention.

In the present invention, the input control circuit 30 analyzes a signal input from the ignition key of the vehicle to analyze whether the original ignition key is correct, and when the ignition key is inserted into the keyhole, the password authentication circuit 40 Since it is determined that the license is obtained, the encryption code is input by manipulating a turn signal of the multi function switch 100, and is preset through the code input terminal 43. It is an effective anti-theft system that allows driving and brake operation by allowing the lock state to be released when the encryption code is matched by comparing the encryption code with a comparison circuit (X-OR).

At this time, the input control circuit 30, as shown in Figure 1, ETACS (10); The signal output from the ETACS 10 is input to the base terminal, and the collector terminal is connected to the transistor 23 through the DC power supply 21 and the resistor R 21, and to the base end of the transistor 23. It consists of an interface 20 consisting of a capacitor 24 having one terminal connected to the emitter of the transistor 23 connected to the other terminal, the voltage flag (V-flag) of the ETACS (10) is a start key Is removed from the keyhole, it maintains the output to the ground (GND) potential of which the potential difference from the reference potential is zero. As a result, when the transistor 23 of the interface 20 is turned on, the transistor 23 ), The collector stage outputs a low value so that the input value to the input unit 41 of the password authentication circuit 40 is maintained at 0, thereby enabling the password authentication circuit 40 to release the locked state of the vehicle. Car is not allowed to enter signal of encryption code The lock is maintained.

On the other hand, when the ignition key is inserted into the keyhole, the input value to the input unit 41 of the password authentication circuit 40 becomes 1, thereby allowing the signal input of the encryption code to the password authentication circuit 40 to be locked. Can be released.

Here, the signal input of the encryption code to the password authentication circuit 40 is made as a turn signal that sends a signal in a direction to rotate left and right of the multi-function switch 100, the input of the turn signal is a password authentication circuit ( Through the input unit 41 of the 40 can be stored in the input buffer (42).

The code input terminal 43 determines whether the memory device 44 matches the encryption code set in advance, and the comparison circuit performs a comparison operation through the X-OR gate 45.

When the output value calculated by the X-OR gate 45 is 0, that is, when the preset encryption code and the input encryption code coincides with the lock state is released and thereby the throttle valve which is the starter 46 and Signal transmission to the brake booster is enabled, and driving and brake operation are possible.

On the other hand, when the output value calculated by the X-OR gate 45 is 1, that is, when the preset encryption code and the input encryption code is inconsistent, the locked state is maintained as it is, and the input buffer 42 It is reset and ready to reenter the encryption code.

Therefore, in the present invention, when the signal of the encryption code is input to the password authentication circuit as a left and right operation signal of the turn signal of the multi-function switch 100 and is approved through an authentication process with a preset encryption code, the vehicle is locked. By releasing the state, even if the ignition key is inserted into the keyhole, it is impossible to operate the vehicle and brake without permission of the password authentication process, thereby enabling effective theft prevention.

As described above, according to the anti-theft system using the turn signal of the vehicle and the control method thereof according to the present invention, after receiving the input of the encryption code through the turn signal of the multi-function switch (multi function switch), the password authentication circuit When approved through the authentication process with the stored encryption code, it is possible to implement to enable the driving and deceleration / acceleration operation of the starter, there is an effect that can completely prevent theft of the car.

1 is a circuit diagram showing the configuration of an anti-theft system using a turn signal of a vehicle according to the present invention;

Figure 2 is a block diagram showing the operating principle of the anti-theft system using a turn signal of a vehicle according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: ETACS 20: Interface

21: DC power supply 22: resistance

23: transistor 24: capacitor

30: input control circuit 40: password authentication circuit

41: input section 42: input buffer

43: code input terminal 44: memory element

45: X-OR gate 46: starting section

100: multi function switch

Claims (3)

ETACS 10, A signal output from the ETACS 10 is input to a base end, and a collector end is connected to a transistor 23 connected through a DC power supply 21 and a resistor R 22, and a base end of the transistor 23. An input control circuit 30 composed of an interface 20 composed of a capacitor 24 having one terminal connected thereto and an emitter portion of the transistor 23 connected to the other terminal; An input unit 41 into which the turn signal of the multifunction switch 100 is input, an input buffer 42 in which an encryption code consisting of a turn signal manipulation input through the input unit 41 is stored, and a preset encryption code is stored The turntable of the automobile, characterized by comprising a memory device 44 and a password authentication circuit 40 including an X-OR gate 45 for comparing and calculating the encryption code of the input buffer 42 and a predetermined encryption code. Anti-theft system using signal. Determining whether the ignition key is inserted into the keyhole; When the ignition key is inserted into the keyhole, inputting the turn signal to the input unit 41 of the password authentication circuit 40 and storing it as an encryption code in the input buffer 42; Comparing and comparing the encryption code of the turn signal operation stored in the input buffer 42 with the encryption code previously stored in the memory device 44 through the code input terminal 43 at the X-OR gate 45; ; When the output value calculated by the X-OR gate 45 is 0, using the turn signal of the vehicle, characterized in that it comprises the step of enabling the driving and deceleration / acceleration operation of the starter 46 How to control your anti-theft system. The method of claim 2, wherein when the output value calculated by the X-OR gate 45 is 1, the locked state is maintained and the input buffer 42 is reset so that the encryption code can be input again. The control method of the anti-theft system using the turn signal of the vehicle, characterized in that it further comprises the step of preparing.