JPH08100554A - Self-diagnosis circuit for automobile door lock device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Easily check connection and defective parts of automobile door lock device. The diagnostic control circuit 10 receives a start signal from a start signal generating means 13 in a state where a door closing signal is received from a door switch 14 and a state switch 16 receives a lock signal or an unlock signal of a door lock device. When the door lock device in the locked or unlocked state is unlocked or locked, the first actuating signal generating means for applying an unlocking signal or a locking signal to the door locking device is unlocked or locked. The door lock device switches the state switch 16 to give a lock signal or an unlock signal to return the door lock device to the initial state, and the door lock device returns to the initial state. And an alarm device 20 for generating an alarm signal when the alarm signal is output.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-diagnosis circuit, and more particularly to a self-diagnosis circuit for a vehicle door lock device.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Patent Laid-Open No. 60-138190, a key signal generator for generating a radio wave containing a predetermined code number and a key signal generator for receiving a radio wave to operate. A radio wave lock having a receiving unit is known. This radio wave lock has an advantage that the receiver is automatically activated when a person carrying the key signal generator approaches the receiver.

Recently, the radio lock may be attached as a dealer option after the automobile is manufactured. Check the operation when the radio lock is attached by the dealer option.
After mounting, the radio lock is actually activated.

[0004]

However, in the conventional radio wave lock, when the door lock device does not operate smoothly,
It is unknown whether the cause of the malfunction is due to miswiring or the component itself is defective.

Therefore, it is an object of the present invention to provide a self-diagnosis circuit for a vehicle door lock device capable of confirming a connection failure or a component failure.

[0006]

A self-diagnosis circuit for a vehicle door lock device according to the present invention comprises a starting signal generating means, a door switch for detecting opening and closing of the door, and a door lock device for locking or unlocking the door. , A status switch for detecting a locked state and an unlocked state of the door lock device,
And a diagnostic control circuit having an input terminal connected to a start signal generating means and a door switch for detecting opening and closing of the door, and an output terminal connected to the door lock device. The diagnostic control circuit receives the door closing signal from the door switch and the state switch receives the locking signal or the unlocking signal of the door lock device, and when the activation signal is received from the activation signal generating means, the lock state or A first operation signal generating means for giving an unlocking signal or a locking signal to the unlocked door locking device, and a state switch by the door locking device unlocked or locked by giving the unlocking signal or the locking signal thereafter. Switching means to give a locking signal or an unlocking signal to return the door lock device to the initial state, and an alarm signal when the door lock device returns to the initial state. And an alarm device. The diagnostic control circuit compares a memory for storing a specific code code with a code code included in the received remote control signal and a code code stored in the memory, and when they match, the door lock device. An actuator unlocking or locking actuation signal is applied to the actuator. The alarm device is activated when the memory provided in the diagnostic control circuit and storing the predetermined code code operates properly.

[0007]

When the activation signal generating means is operated to generate the activation signal, the diagnostic control circuit determines whether the door closing signal is received from the door switch and the locking signal or the unlocking signal of the door lock device is received from the status switch. To determine. When the diagnostic control circuit determines that the door closing signal is received from the door switch and the locking signal or unlocking signal of the door lock device is received from the status switch, the first actuation signal generating means of the diagnostic control circuit determines that the lock signal is generated. An unlocking signal or a locking signal is given to the door lock device in the unlocked or unlocked state. After that, the second operation signal generating means of the diagnostic control circuit gives the unlocking signal or the unlocking signal by switching the state switch by the door lock device unlocked or locked by giving the unlocking signal or the locking signal. To restore the door lock device to the initial state. The alarm device generates an alarm signal when the door lock device returns to the initial state. The diagnostic control circuit also diagnoses the built-in memory.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a self-diagnosis circuit for a vehicle door lock device according to the present invention will be described below with reference to FIGS.

FIG. 1 shows a self-diagnosis circuit of a vehicle door lock device according to the present invention. This self-diagnosis circuit includes a battery 11, an ACC switch 12 provided in an ignition switch (not shown), a key detection switch 13 provided in a key insertion portion of a steering lock device (not shown), and a door switch for detecting opening / closing of a door. 14 and an antenna 15 that receives a radio wave including a predetermined code signal from the transmitter 22. The battery 11, the ACC switch 12, the key detection switch 13, the door switch 14, the antenna 15, and the state switch 16 for detecting the locked state and the unlocked state of the door lock device are lock controls that constitute a diagnostic control circuit by a one-chip microcomputer. It is connected to the corresponding input terminals 10a to 10f of the circuit 10. The key detection switch 13 serves as a start signal generating means, and the door switch 14 is turned on when the door is opened and turned off when the door is closed.

Further, each output terminal 1 of the lock control circuit 10
At 0g to 10k, the actuator 17 for locking or unlocking the door lock device, the trunk actuator 18 for unlocking the lock device of the trunk, and the door lock device returned to the initial state and the state switch 16 was switched. At times, an alarm horn 19 for generating an alarm signal and a buzzer 20 as an alarm device for generating an alarm signal and notifying a change in state are connected. A main switch 21 is provided between the battery 11 and the lock control circuit 10. The terminal 10l of the lock control circuit 10 is grounded.

Although not shown, the lock control circuit 10 includes
When the door closing signal is received from the door switch 14 and the state switch 16 receives the lock signal or the unlock signal of the door lock, when the activation signal is received from the key detection switch 13, the lock state or the unlock state is detected. The state switch 16 is switched by the first operation signal generating means for giving an unlocking signal or a locking signal to the door lock device, and then the door locking device unlocked or locked by giving the unlocking signal or the locking signal. Second actuation signal generating means for applying a locking signal or an unlocking signal to restore the door lock device to the initial state, a 10-second timer for counting a time of 10 seconds, and a memory for storing a predetermined code code. And the code code stored in the memory with the code code included in the remote control signal received from the antenna 15, and when they match, the code code is detected. And a comparator for actuating the Yueta 17 or 18.

In the above configuration, the lock control circuit 10
Is operated according to the flowchart of the operation sequence shown in FIG.

Proceeding from step 30 to step 31, the lock control circuit 10 determines whether or not the main switch 21 is on. When the main switch 21 is turned on, step 32
In, the 10 second timer is started, and in step 33, it is determined whether or not the key has been inserted / removed six times with respect to the steering lock device. When the key is removed from and inserted into the steering lock device six times, the key detection switch 13 generates six pulses. As a result, the process proceeds from step 33 to step 34, and the lock control circuit 10 determines whether the door switch 14 of the driver side door is off and the state switch 16 is on and the driver side door lock device is in the unlocked state. .

When the door lock device is unlocked in step 34, the process proceeds to step 35, where the lock control circuit 10 generates an output from the output terminal 10g and operates the actuator 17 in one direction to operate the door lock device. Switch to the locked state. This enables status switch 1
6 is switched to the off state. In step 36, the lock control circuit 10 detects the lock state from the output of the state switch 16, and proceeds to step 37. In step 37, the lock control circuit 10 conversely generates an output from the output terminal 10h and operates the actuator 17 in the reverse direction.
Therefore, the state switch 16 is switched from the off state to the on state again, and the unlocked state is detected from the output of the state switch 16. Next, the lock control circuit 10 generates an output from the output terminal 10j and operates the alarm horn 19 for a certain period of time to notify the operator that the lock device by the lock control circuit 10 has normally operated. Here, if the status switch 16, the actuator 17, and the lock device are malfunctioning, the horn 19 does not operate.

Next, in the case of a four-door vehicle or an automobile including a rear door, at step 39, the lock control circuit 1
0 determines whether any of the doors is open. If any of the doors is open, the process proceeds from step 39 to step 40, and after the 10 second timer is activated, it is determined in step 41 whether all the doors are closed. When all the doors are closed, in step 42, the output from the output terminal 10i of the lock control circuit 10 is sent to the actuator 18 of the trunk lid, and the trunk lock device is unlocked. Subsequently, in step 43, the lock control circuit 10 determines whether or not the ACC switch 12 is in the on state, and when the ACC switch 12 is in the on state, the lock control circuit 10 is provided with the predetermined code code and stored in step 44. Check if the memory is working properly. When the memory operates normally, the process proceeds from step 44 to 45, the lock control circuit 10 generates the output by the continuous pulse from the output terminal 10k, continuously operates the buzzer 20 for a certain time, and the self-diagnosis circuit operates normally. Inform the operator that it is working.

When all the doors are not closed in step 41, it is determined in step 56 whether the radio wave including the specific code signal is received from the transmitter 22. When the radio wave including the specific code signal is received, in step 55, the lock control circuit 10 outputs the buzzer 2 from the output terminal 10k.
0, the buzzer 20 is operated for a certain period of time, and then the process returns to step 40. If no radio wave including the specific code signal is received in step 56, step 57
At 10 seconds, it is determined whether 10 seconds have elapsed, and if 10 seconds have not elapsed, the process returns to step 41.

In step 34, when the driver's seat side locking device is in the locked state, in step 36 the driver's seat side locking device is in the unlocked state, in step 39 when all doors are closed, and in step 43 the ACC switch. 12 is off, the memory does not operate normally in step 44, and step 5
When 10 seconds have elapsed in 7, an intermittent signal is generated from the output terminal 10k of the lock control circuit 10 in step 54, and the buzzer 20 is intermittently operated. As a result, the operator knows through the self-diagnosis circuit that the device does not operate normally. When the buzzer 20 is continuously operated by the continuous pulse of the lock control circuit 10 in step 45 or when the buzzer 20 is intermittently operated by the intermittent signal of the lock control circuit 10 in step 54, the process proceeds to step 46.

At step 46, it is judged whether the lock control circuit 10 has received a radio wave containing a specific code code through the antenna 15. When this radio wave is received, the routine proceeds to step 47, where the code code contained in the radio wave is the lock control circuit. It is determined whether or not the code code (ID) stored in the memory within 10 matches. When the received code code matches the code code stored in the memory, the process proceeds to step 48,
It is determined whether the ACC switch 12 is on or the key detection switch 13 is on. When either the ACC switch 12 or the key detection switch 13 is in the ON state at step 48, the routine proceeds to step 49, where it is judged whether or not the received code signal is a signal for unlocking the trunk. When it is determined in step 49 that the code signal is the signal for unlocking the trunk, the lock control circuit 10 applies a signal from the output terminal 10i to the actuator 18 of the trunk lock in step 50 to operate the actuator 18 in step 50. , Unlock the trunk lid.
Then, in step 51, the buzzer 20 for unlocking the trunk is operated. In step 46, antenna 1
When it is determined that the lock control circuit 10 does not receive the radio wave including the specific code code through step 5, the code code included in the radio wave is changed to the lock control circuit 10 in step 47.
When it does not match the code code (ID) stored in the memory, the buzzer 20 for unlocking the trunk is operated in step 48 when both the ACC switch 12 and the key detection switch 13 are off. At this time, the process returns to step 46.

At step 58, it is judged whether the specific code signal received is for door locking / unlocking, and if it is judged whether it is for door locking / unlocking, the routine proceeds to step 59, where all doors are closed or not. To determine. When all the doors are closed, the routine proceeds to step 60, where it is judged whether or not the door lock device on the driver side is in the locked state. In the locked state, the process proceeds to step 61, where the lock control circuit 10 outputs the output terminal 10h.
Output an unlocking signal from the actuator, actuating the actuator 17 to unlock the locking device, and then in step 62,
The buzzer 20 is operated by generating an output from the output terminal 10k. When the door lock device on the driver's seat side is unlocked in step 60, the process proceeds to step 63, where the lock control circuit 10 generates an output from the output terminal 10g and operates the actuator 17 in the reverse direction to move the door lock device. After switching to the locked state, the buzzer 20 is operated in step 64. If the specific code signal received in step 58 is not for door locking / unlocking, in step 59 all doors are not closed, or if buzzer 20 is activated in step 62 or 64, then return to step 46.

The embodiment of the present invention is not limited to the above-mentioned embodiment, but can be modified. In the above example, the activation signal is generated when the key detection switch 13 is turned on and off six times, but the number of times the key detection switch 13 is operated can be set as appropriate. Further, instead of the key detection switch 13, it is possible to generate a start signal in various cases such as when a code signal is received from the transmitter 22 a predetermined number of times and when the ignition switch is turned on / off a predetermined number of times.

Further, although the example in which the antenna 15 receives radio as a remote control signal is shown, it may be configured to receive a code code included in other electromagnetic waves such as infrared rays. Instead of the buzzer 20, a light emitting element such as a light emitting diode may be used.

[0022]

As described above, in the self-diagnosis circuit of the vehicle door lock device according to the present invention, it is possible to confirm the connection failure of the wiring or the component failure, and the mounting work can be performed more reliably and easily.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a self-diagnosis circuit of a vehicle door lock device according to the present invention.

FIG. 2 is a flowchart showing an operation sequence of the circuit shown in FIG.

[Explanation of symbols]

10 ... Lock control circuit (self-diagnosis circuit), 12 ...
ACC switch, 13 ... Key detection switch, 14
..Door switch, 15..antenna, 16 .., state switch, 17, 18..actuator, 19
..Horns, 20..Buzzers,

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[Procedure amendment]

[Submission date] November 9, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (3)

[Claims] 1. A start signal generating means, a door switch for detecting opening and closing of a door, a door lock device for locking or unlocking the door, and a status switch for detecting a locked state and an unlocked state of the door lock device. And a diagnostic control circuit having an input terminal connected to a start signal generating means and a door switch for detecting opening and closing of the door, and an output terminal connected to a door lock device, the diagnostic control circuit including a door switch to a door closing door. When the activation signal is received from the activation signal generating means in a state in which the signal is received and the status switch receives the locking signal or the unlocking signal of the door locking device, the door locking device in the locked state or the unlocked state is unlocked. First to give a signal or lock signal
And the unlocking signal or the locking signal is given and then the door lock device is unlocked or locked and the state switch is switched to give the locking signal or the unlocking signal to initialize the door locking device. Of the door lock device for an automobile, comprising: a second actuation signal generating means for returning to the state of 1) and an alarm device for generating an alarm signal when the door lock device returns to the initial state. Diagnostic circuit. 2. The diagnostic control circuit compares a memory storing a specific code code with a code code included in the received remote control signal and a code code stored in the memory, and when they match each other. The self-diagnosis circuit for an automobile door lock device according to claim 1, wherein an unlocking or locking operation signal is applied to the actuator of the door lock device. 3. The self-diagnosis circuit for a vehicle door lock device according to claim 2, wherein the alarm device is activated when a memory provided in the diagnostic control circuit and storing a predetermined code code operates properly.