KR20060057680A - Emergency start device and method of vehicle anti-theft system - Google Patents

Abstract

The present invention relates to an emergency start device and method of a vehicle anti-theft system, when the driver blinks by the number corresponding to the corresponding digit of the password to see the number of flashes of the lamp in the cluster during emergency start, the TX button of the remote key 1 When it is pressed twice, Etax receives RF signal and transmits it to engine ECU.In this case, the number of lamp flashes until engine ECU receives signal is recognized as the number of the corresponding digit of the password so that the vehicle anti-theft system can perform password authentication. A start device and method.

According to the present invention, the problem of excessive input time due to the conventional start-up key on / off repetition, the risk of fire due to the continuous start-key on / off when the vehicle wiring is deteriorated, and the mechanical durability problem of the key set are all solved. Can be.

Vehicle, Anti-theft System, Emergency Start, Immobilizer System, Starter Key, Engine ECU, Remote Key, Etax, Lamp

Description

Emergency start system and method of vehicle anti-theft system {System and method for emergency start of vehicle}             

1 is a block diagram showing an emergency start device of a vehicle anti-theft system according to the present invention,

Figure 2 is a timing diagram showing the operation characteristics during the emergency start operation according to the present invention,

3 is a flowchart showing an emergency start process according to the present invention.

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

1: ignition key 2: transponder

7: Engine ECU 8: Immobilizer Lamp

11: remote key 11a: TX button

12: Etax

The present invention relates to an emergency start device and method of a vehicle anti-theft system, and more particularly, when the driver blinks by the number corresponding to the number of digits corresponding to the password that the driver wants to see and flash the number of lamps in the cluster during emergency start. When the TX button is pressed once, Etax receives the RF signal and delivers it to the engine ECU. At this time, the number of lamp flashes until the engine ECU receives the signal is recognized as the number of digits in the password. A device and method for emergency start of a prevention system.

Recently, mounting of an immobilizer system, which is a vehicle anti-theft system associated with a ignition key, has become common in preparation for vehicle theft.

As is known, the immobilizer system is a system that wirelessly generates an encryption code at the ignition key and permits start-up only when the engine ECU checks and matches the pre-stored ID.

That is, when the driver inserts the ignition key into the key hole for starting, the engine ECU reads the unique ID stored in the ignition key, and the engine ECU reads the unique ID read from the ignition key in advance. If the ID is matched and matched, that is, if it is confirmed that it is a normal registration start key, the start is allowed.If the engine is not a unique original start key, the fuel injection and ignition control are blocked to prevent the engine from starting. .

In the immobilizer system, a transponder for storing an anti-theft related security program and ID code is stored in the ignition system and generating an encryption code.                         

The transponder is driven by electromagnetic forces derived from the antenna coils installed around the key cylinder. The transponder generates an encryption code by the electromagnetic energy transmitted from the antenna coil when the ignition key is turned on after the key hole is inserted. This encryption code is wirelessly transmitted to the antenna coil.

Transponder data wirelessly transmitted from the antenna coil is converted into data usable by the engine ECU in the antenna coil assembly and transferred to the engine ECU, which reads the data and controls engine starting accordingly.

On the other hand, in such an immobilizer system, if the transponder installed in the ignition key fails or an abnormality occurs in the immobilizer system, a state in which the vehicle does not start may occur.

In this case, the immobilizer system has an emergency start function so that emergency measures can be taken. As a conventional technology related to the emergency start function, the system detects when the driver repeats the start key on / off according to the password number that has already been assigned. I can take it.

For example, if the password is 2345, for the input of the password, the start key is repeatedly turned on and off twice consecutively, and then repeatedly performed three times after a certain time, and again four times after a certain time, and then again 5 A total of 14 start-up key turns on / off, such as repeated times, may start the engine.

However, this technique has a problem of excessive input time due to repeated start-up key on / off, and may cause a fire in case of vehicle aging or wiring aging, and a mechanism of key set according to repeated start-up key on / off There is a problem of endurance.

In particular, when the personal password is leaked, there is a blind spot that can be stolen by using the emergency start function after copying the ignition key.

Therefore, the present invention has been invented to solve the above problems, the problem of excessive input time due to the start-up key on / off repetition, the risk of fire due to the continuous start key on / off when the vehicle wiring is aged, key set It is an object of the present invention to provide an emergency start device and method of a vehicle anti-theft system that can solve all mechanical durability problems.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Emergency start device of the vehicle anti-theft system according to the present invention,

A start key used as an operation means for switching to an emergency start mode by operating on / off in a vehicle equipped with an immobilizer system and a keyless entry system; Outputs a control signal for lamp operation to indicate that the system is switched to the emergency start mode according to the input of the start key operation signal, and a control signal for the repeated flashing of the lamp in the emergency start mode, and performs password authentication when password input is completed. An engine ECU which permits starting the engine at time; An immobilizer lamp operated according to a lamp control signal of the engine ECU; A remote key for outputting a signal according to a pressing operation of the TX button as a password input means; And an etax outputting a signal to the engine ECU when it is confirmed that the remote key of the vehicle is output from the output signal of the remote key.

When the driver operates the TX button when the immobilizer lamp blinks by the number of password digits in the emergency start mode, the engine ECU recognizes the number of lamp flashes until the input of the etax signal as the number of the corresponding digits of the password. The process is repeated for each digit, characterized in that the password is input.

On the other hand, in the emergency starting method of a vehicle equipped with an immobilizer system and a keyless entry system,

(a) turning off the ignition key and turning it on again in an error state of the ignition key on and the immobilizer system to switch to the emergency start mode; (b) informing the driver that the engine ECU flashes the immobilizer lamp for a predetermined time and switches to the emergency start mode according to the input of the start key operation signal; (c) after the driver inputs a password using the remote key of the keyless entry system as an input means, and when the password input is completed, the engine ECU performs a password authentication to allow the engine to start when the password is matched. It features.

In particular, the password input process in the step (c),

(d) the engine ECU is switched to the password input mode to repeatedly flash the immobilizer lamp at a predetermined cycle; (e) after the driver counts the number of flashes of the immobilizer lamp and presses the TX button of the remote key if the flashing is repeated by the first digit of the password; (f) receiving the signal transmitted from the remote key by the Etax according to the pressing operation of the TX button and outputting the signal to the engine ECU, and the engine ECU recognizing the number of lamp blinks until the signal is input as the first digit of the password; (g) repeating the steps (d) to (f) for each digit of the password to complete the password input.

In a preferred embodiment, in the step (f), Etax performs an authentication process for confirming that the signal received from the remote key is a remote key signal of the vehicle, and outputs the signal to the engine ECU when it is confirmed that the signal is the remote key of the vehicle. Characterized in that.

Further, in the step (d), the engine ECU is switched to the password input mode by a signal applied from the etax when the driver presses the TX button of the remote key, where the etax is received from the remote key. After performing an authentication process of confirming that the signal is a remote key signal of the vehicle, the signal is output to the engine ECU when it is confirmed that the remote key is the vehicle.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a block diagram showing an emergency start device of the vehicle anti-theft system according to the present invention, Figure 2 is a timing diagram showing the operation characteristics during the emergency start operation according to the present invention, Figure 3 is an emergency according to the present invention This is a flowchart showing the startup process.                     

In FIG. 1, reference numeral 3 denotes a key cylinder, 4 denotes a key hole, 5 denotes an antenna coil, and 6 denotes a decoder.

The present invention relates to an emergency start device and a method of a vehicle anti-theft system. In the related art, the start key is repeatedly turned on / off by a corresponding number to input a number of each digit of a password. By using the remote key of the existing keyless entry system, if the driver sees the number of flashes of the immobilizer lamp in the cluster during emergency start and flashes the number corresponding to the corresponding digit of the password to enter, press the TX button on the remote key. When it is pressed once, Etax receives the RF signal and delivers it to the engine ECU. At this time, the number of lamp flashes until the engine ECU receives the signal is recognized as the number of the corresponding digit of the password, and the main point is to perform the password authentication. .

The present invention is a vehicle anti-theft system in a vehicle equipped with an immobilizer system and a keyless entry system, when the driver blinks by the corresponding number while watching the blinking state of the immobilizer lamp, by pressing the TX button once, according to the conventional vehicle durability It improves system failures, mechanical durability problems of key sets due to repeated start-up keys or T / X button on / off operation, and emergency start function, especially if the remote key of keyless entry system is not lost even if personal password is leaked. It has the advantage of making vehicle theft through impossible.

Referring to the drawings, the emergency start device of the vehicle anti-theft system according to the present invention, the start is used as an operation means for switching to the emergency start mode by operating on / off in a vehicle equipped with an immobilizer system and a keyless entry system A key 1; Outputs a control signal for the operation of the lamp 8 informing that the vehicle is switched to the emergency start mode according to the input of the start key 1 operation signal and a control signal for the repeated flashing of the lamp 8 in the emergency start mode. An engine ECU 7 which, when completed, permits engine startup upon password matching by performing password authentication; An immobilizer lamp 8 that is operated according to the lamp control signal of the engine ECU 7; A remote key 11 which outputs a signal according to the pressing operation of the TX button 11a as a password input means; And an etax 12 for outputting a signal to the engine ECU 7 when it is confirmed that the remote key is the remote key of the vehicle.

In the device configuration of the present invention, when the driver operates the TX button 11a when the immobilizer lamp 8 flashes by the number corresponding to the number of digits in the emergency start mode, the engine ECU 7 is connected to the Etax ( 12) The number of flashing lamps until the signal input is recognized as the number of the corresponding digit of the password, and the above process is repeated for each digit so that the password can be input.

More specifically, the immobilizer system communicates with the transponder 2 in the ignition key 1 when the ignition key 1 is operated, and when the key authentication is completed, the engine ECU 7 stops starting the vehicle. If an immobilizer system error occurs, starting will be impossible.

In this way, when the engine is not started, the engine ECU 7 continuously lights the immobilizer self-diagnosis indicator in the cluster, that is, the immobilizer lamp 8 for a predetermined time.                     

At this time, if the driver wants to start by the emergency start function, if the ignition key 1 is turned off and then on again, the driver is switched to the emergency start mode, and the engine ECU 7 is switched to the emergency start mode. The immobilizer lamp 8 flashes for a predetermined time, for example 5 seconds, to inform.

Then, after a predetermined time, for example, 3 seconds, the engine ECU 7 is switched to the password input mode.

Here, instead of allowing the engine ECU 7 to automatically switch to the password input mode after a predetermined time elapses, the password is input only when the driver presses the TX button 11a in the remote key 11 of the keyless entry system. You can also switch to mode.

In this case, when the TX unit of the remote key 11 reproduces a constant period pulse signal, converts it into an RF signal, and transmits the radio signal, the radio signal is received by the Etax 12 of the vehicle through the antenna. Is transmitted from the remote key 11 of the vehicle, and if it is confirmed that it is the remote key signal of the vehicle, an authentication confirmation signal is output to the engine ECU 7 so that the engine ECU 7 switches to the password input mode. Be sure to

When the system enters the password input mode as described above, the engine ECU 7 flashes the immobilizer lamp 8 in the cluster at regular intervals. At this time, the driver counts the number of flashes of the immobilizer lamp 8 and repeats the flashing by the first digit of the password. Press the TX button 11a of the remote key 11 once.

At this time, the TX unit of the remote key 11 reproduces a constant period pulse signal, converts it into an RF signal, and transmits it wirelessly.

The radio signal is input to the vehicle's Etax 12 through the antenna, and the Etax 12 checks whether the received radio signal is transmitted from the remote key 11 of the vehicle.

This signal authentication function can be used as an authentication function of the existing keyless entry system.

At this time, when the Etax 12 confirms that it is a remote key signal of its vehicle, it transmits an authentication confirmation signal, that is, a pulse signal of a predetermined period, to the engine ECU 7, and if it is not its own vehicle, the Etax 12 goes high to the engine ECU 7. The signal is transmitted to light the immobilizer lamp 8 and at the same time, the authentication failure is switched.

When the engine ECU 7 receives the authentication confirmation signal from the etax 12, the lamp stops blinking, and when the number of lamp blinks before the TX signal is input, that is, when the authentication confirmation signal is input from the etax 12, The number of flashing lamps until is recognized as the first password and stored.

Then, the engine ECU 7 flashes the lamp 8 again after a certain time, and repeats the password input process for inputting the number of remaining digits of the password.

When the password input is completed in this way (when the engine ECU receives the input of the digits for each digit of the password), the engine ECU 7 performs the password authentication by comparing with the stored number, and turns off the lamp 8 when the password authentication is completed. Stay intact.

Thereafter, when the driver starts the engine with the starter key 1, the engine ECU 7 permits the start and performs normal engine control in the state of starting.

As described above, in the present invention, when the driver inputs the password by counting the number of flashing lamps and flashing the number corresponding to each digit of the password, the driver presses the TX button 11a of the remote key once. The problem of excessive input time due to repetition of off, fire hazard by continuous on / off of the starter key when the vehicle wiring is deteriorated, and mechanical durability of the key set can all be solved.

In addition, since the Etax internal authentication process is performed every time the signal generated every time the TX button 11a is pressed, vehicle theft through the emergency start function is impossible unless the remote key 11 is lost even when a personal password is leaked.

The emergency start process of the present invention will be described as an example when the password is '2345' with reference to FIGS. 2 and 3 as follows.

When the immobilizer lamp 8 of the cluster flashes five times while the immobilizer system enters the emergency start mode, the password is input by using the TX button 11a of the remote key 11.

The password input in the password input mode is a method of counting and inputting the number of times the lamp 8 flashes, and when the driver first counts that the lamp 8 flashes twice, and then turns on / off the TX button 11a. This signal is input to the engine ECU 7 via signal authentication via the etax 12, and the engine ECU 7 recognizes the number of lamp flashes until the lamp stops flashing and the TX signal is input as the first password.

Then, the engine ECU 7 again flashes the lamp 8 after a certain time, and when the driver turns on / off the TX button 11a when the lamp 8 flashes three times, the etax 12 The signal authentication process of and the number recognition process in the engine ECU 7 are performed.

Subsequently, when the lamp 8 flashes repeatedly and the driver turns on / off the TX button 11a when the lamp 8 flashes four times, the signal authentication process and the engine ECU 7 in the etax 12 are again performed. When the number recognition process at) is performed, and the lamp 8 flashes again and the driver turns on / off the TX button 11a when the lamp 8 flashes five times, the signal from the etax 12 is again. The authentication process and the number recognition process in the engine ECU 7 are performed.

When the input of the four passwords is completed as described above, the engine ECU 7 performs the password authentication mode. When the password is confirmed to match in the password authentication process, the immobilizer lamp 8 is turned off.

In this way, when the driver starts the engine by operating the start key 1 in the password authentication state (START), the engine ECU 7 permits the start, and the start is performed.

As described above, according to the emergency start apparatus and method of the vehicle anti-theft system according to the present invention, by improving the conventional start key repeat operation method, the password input by the driver counts the number of flashing lamps to the number of each digit of the password If the corresponding flashing is made, the TX button on the remote key is pressed once.The problem of excessive input time due to the conventional start-up key on / off repetition and the risk of fire due to the continuous start-up key on / off when the vehicle wiring is deteriorated. The problem, the mechanical durability problem of the key set, can all be solved.

In addition, every time the TX button of the remote key is pressed, the signal authentication process in Etax is performed. Therefore, there is an additional security increase effect, and even if the password is leaked, the vehicle cannot be stolen through the emergency start function without losing the remote key.

In addition, since the emergency start authentication, that is, the password input is made by pressing the TX button, it is simpler than the conventional start key operation, and the operator's convenience is increased because only one on / off operation is required per digit password.

Claims (5)

A start key used as an operation means for switching to an emergency start mode by operating on / off in a vehicle equipped with an immobilizer system and a keyless entry system; Outputs a control signal for lamp operation to indicate that the system is switched to the emergency start mode according to the input of the start key operation signal, and a control signal for the repeated flashing of the lamp in the emergency start mode, and performs password authentication when password input is completed. An engine ECU which permits starting the engine at time; An immobilizer lamp operated according to a lamp control signal of the engine ECU; A remote key for outputting a signal according to a pressing operation of the TX button as a password input means; Etax for outputting a signal to the engine ECU when it is confirmed that the remote key of the vehicle from the output signal of the remote key; When the driver operates the TX button when the immobilizer lamp flashes by the number corresponding to the password digit in the emergency start mode, the engine ECU flashes the number of lamp flashes until the ETAX signal is input. Recognizing as a number, the emergency start device of the vehicle anti-theft system, characterized in that the input of the password is performed repeatedly for each digit. In the emergency start method of a vehicle equipped with an immobilizer system and a keyless entry system, (a) turning off the ignition key and turning it on again in an error state of the ignition key on and the immobilizer system to switch to the emergency start mode; (b) informing the driver that the engine ECU flashes the immobilizer lamp for a predetermined time and switches to the emergency start mode according to the input of the start key operation signal; (c) the driver then inputs a password using the remote key of the keyless entry system as an input means, and when the password input is completed, the engine ECU performs password authentication to permit engine start when the password matches; Emergency start method of the vehicle anti-theft system comprising a. The method according to claim 3, In the step (c) the password input process, (d) the engine ECU is switched to the password input mode to repeatedly flash the immobilizer lamp at a predetermined cycle; (e) after the driver counts the number of flashes of the immobilizer lamp and presses the TX button of the remote key if the flashing is repeated by the first digit of the password; (f) receiving the signal transmitted from the remote key by the Etax according to the pressing operation of the TX button and outputting the signal to the engine ECU, the engine ECU recognizing the number of lamp blinks until the signal is input as the first digit of the password; (g) repeating steps (d) to (f) for each digit of the password to complete the password input; Emergency start method of the vehicle anti-theft system, characterized in that consisting of. The method according to claim 3, In step (f), Etax performs an authentication process for confirming that the signal received from the remote key is a remote key signal of the vehicle, and outputs a signal to the engine ECU when it is confirmed that the signal is the remote key of the vehicle. Emergency start of vehicle anti-theft system. The method according to claim 3, In the step (d), the engine ECU is switched to the password input mode by a signal applied from the etax when the driver presses the TX button of the remote key, where the etax receives the signal received from the remote key. The vehicle anti-theft system, characterized in that for outputting the signal to the engine ECU when it is confirmed that the remote key signal of the vehicle after performing the authentication process to confirm that the remote key signal.

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