JPH0967962A - Vehicle lock mechanism control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly prevent theft or the like by putting the second control means in a burglar operation having received a control signal from the first control means when any other person uses the password code. SOLUTION: A judgement is made to know whether the input from a password code input means 1 is identical to the password code for locking, password code for unlocking, or a burglar operation code, and the result from judgement is emitted to a lock mechanism control means 2, etc. A burglar sensing means 4 emits a control signal when any undue unlocking motion is conducted. The control signal from the first control means 3 is emitted to the second control means 5 via an OR logic circuit 34, and a burglar control signal is emitted from the second control means 5, and after horns 35, 35 are actuated for blowing intermittently along with twinkling of headlights 36, 36, the processing step by the control device is returned to the specified step. That is, when a burglar operation code is fed to the input means 1, alarms by horns and headlights are issued so as to certainly prevent a theft due to undue unlocking motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lock mechanism control device, and more particularly to a keypad entry system for controlling lock / unlock operation of a lock mechanism by inputting a code and an alarm by an unauthorized unlock operation. The present invention relates to a lock mechanism control device for a vehicle that is used together with a Burglar alarm system to generate the lock mechanism.

[0002]

2. Description of the Related Art A keypad entry system configured to unlock a vehicle lock mechanism only when a preset code code is input to a code code input means (for example, a keypad) is known. Kaihei 5-17
It is known as disclosed in Japanese Patent No. 9846.

On the other hand, when an unauthorized unlocking operation (for example, an unauthorized unlocking operation on a door switch, a lock link switch, a door key cylinder switch, a trunk switch, etc.) is performed on a vehicle lock mechanism, There is also known a Burglar alarm system that detects an alarm and generates an alarm (for example, an intermittent horn sound or headlight blinking).

[0004]

When the above keypad entry system is used, when a reciting code is told by another person or the reciting code is known to another person, the recitation code is input to the keypad. Will unlock the vehicle's lock mechanism by others,
May suffer damage such as theft.

On the other hand, in the case of the conventionally known Burglar alarm system, since an unauthorized unlocking operation to the lock mechanism is detected, the recitation code to the keypad when another person knows the recitation code. It is not possible to prevent unauthorized unlocking by input.

The present invention has been made in view of the above points, and an object of the present invention is to make it possible to surely prevent theft even when another person knows the recitation code.

[0007]

In the basic configuration of the present invention, as means for solving the above problems, a recitation code input means for inputting a recitation code for unlocking a lock mechanism of a vehicle, and the lock. Locking mechanism control means for controlling lock operation or unlocking operation of the mechanism, and first control for outputting an unlock command signal to the locking mechanism control means in response to the regular recitation code input to the recitation code input means. In a lock mechanism control device for a vehicle including means, an output signal from the first control means when a preset bargura operation code other than the recitation code is input to the recitation code input means. A second control means for receiving and outputting an alarm command signal is additionally provided so that the theft can be reliably prevented by the alarm generation when the bargra operation code is input. That.

In the basic configuration of the present invention, when the recitation code is changed, the previously stored recitation code is used as the subsequent bargragging operation code. The bargragging operation code is set each time the recitation code is changed. It is preferable that it does not need to be corrected, and in that case, when the recitation code is changed a plurality of times, it is more preferable that the immediately preceding recitation code is the subsequent bargra operation code because the bargra operation code can be easily stored. .

Further, the second control means is also used as a means for outputting a command for issuing an alarm when an illegal unlock operation is performed on the lock mechanism, thereby simplifying the control circuit. It is preferable in terms of obtaining.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the vehicle lock mechanism control device includes a recitation code input means 1 for inputting a recitation code for unlocking the lock mechanism of the vehicle, and a lock operation or unlock of the lock mechanism. A lock mechanism control means 2 for controlling the operation, and a first control means 3 for outputting an unlock command signal to the lock mechanism control means 2 in response to a regular recitation code input to the recitation code input means 1. When the unauthorized unlocking operation is executed on the lock mechanism of the vehicle, the bargrass detecting means 4 detects the unauthorized unlocking operation and outputs a control signal.
When a control signal from the bargrass detecting means 4 is received or a preset bargragging operation code other than the recitation code is input to the recitation code inputting means 2, the first control means 3 outputs The second control means 5 receives the output signal and outputs the alarm command signal.

The recitation code input means 1 is composed of a plurality of seesaw-type keypad switches 6, 7, 8, 9, and 10. When the seesaw operation of each of the keypad switches 6-10 is performed, "0"-"9" is selected. It is possible to input a 5-digit recitation code signal corresponding to "." As shown in FIG. 2, these keypad switches 6 to 10 are provided on a door outer handle 12 provided on a door outer handle arranging portion 11 provided on a vehicle door outside portion. In addition,
If a larger number of keypad switches are provided, a total of 10 keypad switches corresponding to "0" to "9" may be provided.

The signal from the keypad switches 6 to 10 is first converted into a 5-digit recitation code via a buffer amplifier 13 to 17 for converting an analog signal into a digital signal.
It is supposed to be input to the control means 3.

The first control means 3 comprises a microcomputer, and the input recitation code C from the recitation code input means 1 and the lock recitation code C (L) or the unlock recitation code C (U) or It is determined whether or not it coincides with the Burglar operation code C (B), and the result is output as a control signal to the lock mechanism control means 2 or the second control means 5 which will be described in detail later. In addition, from the first control means 3,
The control signal K ₁ is output when the input recitation code C and the bargra operation code C (B) match. Further, another output signal from the first control means 3 is the transistor 18
The base voltage of the keypad switch is controlled so that the lamp 19 for illuminating the keypad switch is turned on by the conduction of the transistor 18. In the present embodiment,
The first control means 3 uses the lock recitation code C (L),
It also has a function of erasing and setting the unlock recitation code C (U) and the bargra operation code C (B).

The lock mechanism control means 2 comprises, for example, a microcomputer, and receives a signal from the first control means 3 or the door lock switch (or keyless entry device) 14 to lock / unlock the lock mechanism. Therefore, a command to lock / unlock the actuators 20 and 21 is to be output. That is, the actuators 20 and 21 are operated and controlled by the lock relay 22 and the unlock relay 23, respectively. The lock and unlock relays 22 and 23 are controlled by the lock mechanism control means 2. The ON / OFF control is performed by the conduction / non-conduction of the transistors 24 and 25 whose base voltages are controlled.

The bargrass detecting means 4 comprises, for example, a microcomputer, and has a door switch 26, a lock link switch 27, and a door key cylinder switch 2.
8. The signal from the trunk switch 29 is to be input through buffer amplifiers 30 to 33 that convert analog signals into digital signals. Then, from this bargrass detecting means 4, an unauthorized unlock operation (for example,
(Unlock operation by a method other than keyless entry when no key is inserted in the door key cylinder)
Is executed, the control means K ₂ is output.

The control signals K ₁ and K ₂ from the first control means 3 and the bargrass detection means 4 are input to the OR logic circuit 34, and the output signal of the OR logic circuit 34 is input to the second control means 5. It is supposed to be.

The second control means 5 is composed of, for example, a microcomputer, and outputs an operation command signal to the horns 35, 35 and headlights 36, 36 which function as alarm means. That is, the horns 35, 35 and the headlights 36, 36 are operated and controlled by the horn relay 37 and the headlight relay 38, respectively. Transistor 3 whose base voltage is controlled by the second control means 5
ON / OFF control is performed by the conduction / non-conduction of 9 and 40, respectively. Reference numerals 41 and 42 are a horn switch and a headlight switch which are manually operated.

Next, the operation of the vehicle lock mechanism control device according to the present embodiment will be described with reference to the flow chart shown in FIG.

After the device is initialized in step S ₁ , when the input of the recitation code C by the recitation code input means 1 (specifically, the keypad switches 6 to 10) is confirmed in step S ₂ , Step S ₃
In through Step S ₅ recite code C and lock recite code C (L), consistent determination of the unlocking recite code (U) and Bagura operation code C (B) it is performed. This coincidence determination is executed by the first control means 3.

When it is determined that C = C (L) in step S ₃ , the process proceeds to step S ₆ , where a lock control signal is output from the lock mechanism control means 2 and the lock mechanism is locked. The process returns to step S ₂ .

If C = C (U) is determined in step S ₄ , the process proceeds to step S _{7, in} which an unlock control signal is output from the lock mechanism control means 2 and the lock mechanism is unlocked. The process by the controller returns to step S ₂ .

If it is determined in step S ₅ that C = C (B), the process proceeds to step S ₈ and the first control means 3
The control signal K ₂ from the input terminal 2 is input to the second control means 5 via the OR logic circuit 34, and the second control means 5 outputs a vergula control signal (in other words, an alarm command signal) to the horns 35, 35. After the intermittent sounding and the blinking of the headlights 36, 36 are executed, the processing by the controller is performed in step S.
Return to ₂ . In other words, the bargra operation code C
When (B) is input to the recitation code input means 1,
Intermittent horns 35, 35 and headlights 36,
An alarm is generated by blinking 36, and theft can be reliably prevented by an unauthorized unlocking operation.

[0024] When a negative determination is made in step S ₃ ~ Step S _5, the process proceeds to step S _9, whether erased recitation code C for unlocking is made determination is made. Here, if an affirmative determination is made, step in S ₁₀ is a for unlock recite code C (U) a new Bagura operation code C (B), a new unlock recite code C (U in Step S ₁₁ ) Is set,
Then, the process returns to step S ₂ . By doing so, it is not necessary to reset the bargra operation code C (B) each time the unlocking recitation code C (U) is changed, and the unlocking recitation code C (U) is changed multiple times. Just in case, just before the unlock recitation code C
Since (U) is used as the subsequent bargura operation code C (B), it becomes easy to store the bargula operation code C (B).

When a negative determination is made in step S ₉ , the process proceeds to step S ₁₂ and the bargra operation code C
It is determined whether or not the setting of (B) is performed, and when the determination is affirmative, the Burglar operation code C (B) is set in step S ₁₃ . When a negative determination is made in step S ₁₂ , the process returns to step S ₂ .

In the above description, the second control means 5 operates by receiving the control signal K ₁ or K ₂ from the first control means 3 or the vergula detection means 4 (that is, the keypad). However, it is also possible to operate by only the control signal K ₁ from the first control means 3.

[0027]

According to the present invention, when another person uses the recitation code when the recitation code is threatened by another person or when the recitation code is known to another person, the first control means can be used. Since the second control means to which the control signal from is input can effectively operate the vergula, there is an excellent effect that damage such as theft can be surely prevented.

[Brief description of drawings]

FIG. 1 is a control circuit diagram showing a lock mechanism control device for a vehicle according to an embodiment of the present invention.

FIG. 2 is a front view showing an arrangement example of the recitation code input means in the vehicle lock mechanism control device according to the exemplary embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation of the vehicle lock mechanism control device according to the exemplary embodiment of the present invention.

[Explanation of symbols]

1 is a recitation code input means, 2 is a lock mechanism control means, 3 is a first control means, 4 is a vergure detection means, 5 is a second control means, 6 to 10 are keypad switches, 20 and 21 are actuators, and 35 is The horn and 36 are headlights.

Claims (4)

[Claims] 1. A recitation code input means for inputting a recitation code for unlocking a lock mechanism of a vehicle, a lock mechanism control means for controlling lock operation or unlock operation of the lock mechanism, and the recitation code input. A lock mechanism control device for a vehicle, comprising: a first control means for outputting an unlock command signal to the lock mechanism control means in response to a regular recitation code input to the means. On the other hand, a second control means for receiving an output signal from the first control means and outputting an alarm command signal when a preset bargula operation code is input in addition to the recitation code is provided. Characteristic vehicle lock mechanism control device. 2. The lock mechanism control device for a vehicle according to claim 1, wherein when the recitation code is changed, the previously stored recitation code is used as a subsequent bargura operation code. 3. The lock mechanism control device for a vehicle according to claim 2, wherein when the recitation code is changed a plurality of times, the immediately preceding recitation code is used as a subsequent bargura operation code. 4. The second control means is also used as a means for outputting a command for issuing an alarm when an unauthorized unlock operation is performed on the lock mechanism. The lock mechanism control device for a vehicle according to any one of claims 1 to 3.