KR100440128B1 - Robbery prevention controlling device of vehicle - Google Patents

Abstract

The present invention provides a vehicle antitheft control device that can maintain the vehicle state more safely by suppressing the starting and starting of the vehicle even when using an ignition key that does not have its own key code to compensate for theft of the vehicle. It is about. The present invention provides a vehicle anti-theft control device, comprising: a keypad for generating an electrical signal corresponding to an input key code; The memory unit stores a set key code value of the vehicle, and compares a set key code of the memory unit with a key code of the keypad, and compares a signal of 1 (HIGH) if the key code value to be compared is matched. A comparator for outputting a signal of 0 (LOW) if not; Analyzes the signal input from the transmitter and outputs an arming / disarming signal, and when the arming state is released by inserting the ignition key of the vehicle, the fuel pump of the vehicle according to the signal output from the comparator It comprises an ETACS (ETACS) for controlling the flow of the drive current supplied to the relay.

Description

Anti-theft control of vehicle {ROBBERY PREVENTION CONTROLLING DEVICE OF VEHICLE}

The present invention relates to a vehicle, and more particularly, to an anti-theft control device for a vehicle.

In general, the interest in preventing theft of a vehicle is increasing day by day due to the tendency of the vehicle to be advanced.

In particular, in the case of medium and large vehicles, a device for preventing theft of a vehicle is mostly selected as essential.

The anti-theft device according to the prior art operates the arming state in the Electronic Timing and Alarm Control System (ETACS), and when a symptom of theft occurs, a warning is made by operating a siren or a horn.

Alternatively, as an immobilizer system, the ignition key's encryption code and the engine control unit (ECU) communicate with each other to prevent vehicle theft.

Etax of the vehicle controls the operation of various electronic equipment (e.g., door locking device, wiper drive device, equalizer device, trunk opening device, power window drive device, defogger drive device, start inhibit device, etc.) mounted on the vehicle. Control unit.

The anti-theft system by Etax, which has been presented to date, works only when there is armed signal transmission by keyless entry without the ignition key.

In addition, when signs of vehicle theft (doors / hoods / trunks open) occur, warnings of theft are indicated by means such as siren or horn.

It also prevents the starting motor from operating.

However, in the case of using the above method, in the prior art, when the battery is exhausted or when the door is opened by the ignition key, more than 30 seconds have elapsed after the ignition key has been ignited. Is released and becomes unarmed.

Therefore, starting and starting are also possible by the ignition key (copy of the ignition key) which does not have a unique key code.

In addition, siren or horns will not work if you break into a window that is not open, such as a door, hood, or trunk, which is a sign of vehicle theft.

Even in this case, there is a problem that starting and starting are possible by the operation of the copied ignition key or the wiring, so that preparation for theft is poor.

An object of the present invention is to compensate for theft of the vehicle to prevent theft control of the vehicle that can maintain the vehicle more safely by suppressing the starting and starting of the vehicle even when using an ignition key that does not have its own key code To provide a device.

In order to achieve the above object, the present invention provides a vehicle anti-theft control device, comprising: a keypad for generating an electrical signal corresponding to an input key code; The memory unit stores a set key code value of the vehicle, and compares a set key code of the memory unit with a key code of the keypad, and compares a signal of 1 (HIGH) if the key code value to be compared is matched. A comparator for outputting a signal of 0 (LOW) if not; Analyzes the signal input from the transmitter and outputs an arming / disarming signal, and when the arming state is released by inserting the ignition key of the vehicle, the fuel pump of the vehicle according to the signal output from the comparator Characterized in that it comprises an ETAX (ETACS) for controlling the flow of the drive current supplied to the relay.

1 is a system diagram showing the configuration of a vehicle anti-theft control device according to an embodiment of the present invention.

FIG. 2 is a block diagram inside the decoder shown in FIG. 1; FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

The configuration of the anti-theft control device for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

First, the conventional vehicle etax has many functions from various input signals, but is limited to a function of notifying an alarm situation with a burglar alarm, that is, a siren or a horn.

In the embodiment of the present invention, the main function of controlling the power supplied to the fuel pump relay 140 shown in FIG. It can be supplemented.

That is, in the exemplary embodiment of the present invention, the program related to various signals in the Etax 130 may be modified to implement an anti-theft function of the vehicle.

Referring to FIG. 1, an embodiment of the present invention includes a key pad 110, a comparator 120, and an etax 130 in a vehicle anti-theft control device.

The keypad 110 functions to generate an electrical signal corresponding to the input key code.

The comparator 120 includes a decoder having a memory unit 122 (EEPROM), a shift register 124, and a comparator 126 for storing a vehicle-specific set key code value as shown in FIGS. 1 and 2. And a key code value input to the key pad 110 and the key code set in the memory unit 122 to compare with each other.

The comparator 120 outputs a signal of 1 (HIGH) if the key code values to be compared coincide with each other, and a signal of 0 (LOW) if the key code values match each other.

The Etax 130 (ETACS) analyzes a signal input from the transmitter TX and outputs an arming / disarming signal, and when the arming state is released by inserting the ignition key of the vehicle, the comparator ( According to the signal output from the 120 to control the flow of the drive current supplied to the fuel pump relay 140 of the vehicle.

For example, the etax 130 supplies a drive current to the fuel pump relay 140 of the vehicle when transitioning from the armed state made by the transmitter signal to the normal unarmed state by the transmitter signal.

On the contrary, the etax 130 outputs a vehicle burglar alarm control signal when the transition from the armed state made by the transmitter signal to the abnormal state.

That is, when the transition from the armed state performed by the transmitter signal to the normal (transmitter signal based) unarmed state, all operations are performed in the same manner as in the prior art without a separate unique key code input procedure.

Otherwise, the siren or horn is activated.

As described above, the embodiment of the present invention compensates for the disadvantages of the anti-theft system by the armed / unarmed method by the Etax 130 in the prior art and does not have its own key code. It takes a cryptographic transfer scheme that requires you to enter the same unique key code that can be done together.

On the other hand, when the armed state is released by the insertion of the ignition key is configured to receive a separate unique key code input in the vehicle is configured to prevent unauthorized entry into the vehicle without the ignition key.

In the prior art, starting and starting was always possible because the user could break the windshield of the vehicle in the armed state and forcibly enter the vehicle and could not detect signs of theft.

However, in the embodiment of the present invention, when the armed signal as shown in FIG. 1, the operation of the fuel pump 142 (Fuel Pump) is impossible, even if armed by the insertion of the ignition key is not armed by the normal transmitter signal Receive input of a unique key code to limit starting and starting of the vehicle.

An anti-theft control process of a vehicle according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 and 2.

First, the operation (normal state) in the unarmed state will be described.

When the unarmed signal is received by the transmitter signal, the door is normally unlocked by the Etax 130, and the fuel pump relay 140 can be driven by the unarmed signal, thereby operating the fuel pump 142 to be ready to start. .

Since this state is determined to be a state in which the vehicle owner operates the vehicle, the armed state is canceled and then changed to a state in which driving is easy (startable state).

When the unarmed signal is received by the transmitter signal, the key code values are sequentially input one by one through the shift register 124 in the comparator 120, as shown in FIG. The key code value stored in the memory unit 122 is compared.

If all key code values match, the signal 1 (HIGH) is output. Otherwise, the signal 0 (LOW) is output to finally control the current flow to the fuel pump relay 140.

That is, when the unarmed signal is received by the transmitter signal, the output to the fuel pump relay 140 becomes the high voltage (logical value: 1), and the logic value is calculated by the AND operation of the unarmed signal and the stolen signal signal. This 1 (HIGH) becomes the input of the selector.

When the input of the selector is 1, the output of the multiplex 160 outputs a key code previously stored in the memory 122.

Therefore, the output value is transmitted to the decoder relay 150 without a separate input of the keypad 110.

In the event of an abnormal disarmament (30 seconds after the insertion of the ignition key), the selector's input is zero since it does not receive a normal transmitter signal.

In this case, when the input of the multiplex 160 is replaced with the input value of the keypad 110 and the correct key code is input, the comparator 120 outputs a signal of 1 (HIGH) and the fuel pump relay ( 140 allows for current flow.

In this case, if the input of the key code is abnormal (not the normal user of the vehicle), even if the disarmament is made, the key code value is different so that the current flow to the fuel pump relay 140 is suppressed, so that starting is impossible.

For example, when the ignition key is copied by another person, theft is possible by inserting the ignition key after intrusion. However, in the embodiment of the present invention, the copy is meaningless by an encryption method called a key code.

In addition, the embodiment of the present invention can be prepared in the case that the battery is discharged, as in the anti-theft control method of the vehicle according to the prior art by applying an encryption method called a key code.

Just be careful not to leak your own key code.

Next, operation in the armed state (when entering the anti-theft state) will be described.

Upon entering the armed state by the transmitter signal, the fuel pump relay 140 is turned off in addition to the normal operation of the Etax 130 to prevent the operation of the fuel pump 142.

That is, when the armed signal is transmitted by the transmitter signal, the output to the fuel pump relay 140 becomes 0 (LOW) regardless of the value of the decoder relay 150.

Accordingly, no current flows through the coil of the fuel pump relay 140 even when the ignition key is turned on and started, and the fuel pump 142 does not operate.

Since power is not supplied to the fuel pump 142, starting and operation of the vehicle are impossible.

As a result, even in the armed state, the vehicle cannot be started as in the unarmed state.

On the other hand, if you open the hood, trunk, door in the armed state, the siren or horn will sound.

For reference, the armed state is possible by the transmitter signal.

Armed / Unarmed Logic Status: 0/1

The AND gate can be implemented as a transistor logic (TTL) using a transistor.

As described above, the embodiment of the present invention becomes armed and simultaneously turns off the fuel pump relay 140.

The fuel pump relay 140 does not supply power to the fuel pump 142 when not in an unarmed state.

In addition, the fuel pump relay 140 requires a separate key code input even when the fuel pump relay 140 is not armed by the transmitter signal even when the fuel pump relay 140 is unarmed.

That is, when dismantling the burglar alarm (siren, horn wire cutting, battery removal, window breakage, etc.) or when the car door is to be started to start the embodiment of the present invention requires a separate key code .

The armed state can be released if the transmitter has received an unlock signal or if it has been in the ignition on state for more than 30 seconds after the ignition key is inserted.

As described above, the vehicle anti-theft control apparatus according to the present invention can be set only as a transmitter signal when setting the armed / unarmed state of the vehicle, and can prevent the vehicle from being started by shutting off the power of the fuel pump when armed.

In addition, when not armed by the transmitter signal, it is possible to cope with the case of theft by illegal copying of the ignition key by receiving a password of a separate key code.

In addition, by directly controlling a relay connected to the fuel pump through encryption, an effective anti-theft function can be performed as compared to the conventional anti-theft device that controls the battery power cutoff device or controls the vehicle driving devices.

Claims (3)

In the vehicle anti-theft control device, A keypad for generating an electrical signal corresponding to the input key code; The memory unit stores a set key code value of the vehicle, and compares a set key code of the memory unit with a key code of the keypad, and compares a signal of 1 (HIGH) if the key code value to be compared is matched. A comparator for outputting a signal of 0 (LOW) if not; Analyzes the signal input from the transmitter and outputs an arming / disarming signal, and when the arming state is released by inserting the ignition key of the vehicle, the fuel pump of the vehicle according to the signal output from the comparator The anti-theft control device for a vehicle, characterized in that it comprises an ETAX (ETACS) for controlling the flow of the drive current supplied to the relay. The anti-theft control device of a vehicle according to claim 1, wherein the etax supplies a driving current to the fuel pump relay of the vehicle when the etax is switched from the armed state performed by the transmitter signal to the normal unarmed state by the transmitter signal. . 2. The anti-theft control apparatus for a vehicle according to claim 1, wherein the etax outputs a vehicle burglar alarm control signal when it is changed from an armed state performed by a transmitter signal to an abnormal state.