JPS6236110B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a door lock control device for an automobile that prevents forgetting to remove the key of an automobile and controls the door lock.

[Conventional technology]

Conventionally, this type of device prevents forgetting to remove the vehicle key based on the inserted state of the vehicle key, the seated state of the driver, the open/closed state of the door, etc. It is disclosed in No. 53-52518 and Utility Model Application No. 51-4018. These conventional devices forcibly bring the vehicle into an unlocked state or issue an alarm when the user forgets to remove the key. However, this alarm is configured to sound a buzzer via a switch that detects the opening and closing of the door, so if the driver closes the door without noticing this alarm, the alarm will stop and the driver will forget the vehicle key. There is a problem.

[Problem that the invention seeks to solve]

Therefore, in view of the above points, the present invention determines whether the vehicle key has been forgotten and once an alarm is generated, even if the door is closed (with the key still inserted in the key box), the alarm will not be activated. An object of the present invention is to provide a door lock control device for an automobile that holds the door without stopping, unlocks the door when the key is forgotten to be removed, and also enables automatic locking that automatically locks the door when the vehicle speed exceeds a predetermined value. do.

[Means for solving problems]

In order to achieve the above object, the present invention includes: a vehicle speed sensor that emits a vehicle speed signal; a key detection means that detects that a vehicle key is inserted into a key box and emits a key signal; and a key detection device that detects the opening and closing of a vehicle door. door opening/closing detection means that generates a door signal when the vehicle speed signal is greater than a predetermined value, and an instruction means that detects that a door lock instruction is issued and generates an instruction signal; When it is determined that
door lock determination means for transmitting a door lock set signal; the door is locked based on the instruction signal, and the door is opened based on the door signal;
and a forget-to-remove-the-key alarm determining means for transmitting an alarm set signal and a door unlock set signal to warn of the forget-to-remove key state when determining that the key is inserted based on the key signal; and the alarm signal. an alarm stop first condition determining means that generates a stop condition signal to stop the alarm when it is determined that the key has been removed based on the key signal under the output state of the alarm signal; When the key insertion state is determined based on the door signal and the vehicle speed signal, the alarm should be stopped when it is determined that the door is closed based on the door signal and that the vehicle is running based on the vehicle speed signal. alarm stop second condition determining means for generating a stop condition signal; alarm means for issuing and holding a warning to the driver using the alarm set signal; and stopping the alarm using the alarm reset signal; and the door lock set signal. The present invention is characterized by comprising: a door lock mechanism that locks the door according to the door unlock set signal; and an unlock mechanism that unlocks the door according to the door unlock set signal.

[Effect]

According to the above configuration, when the vehicle speed is above a predetermined value and the door is closed, the door lock determination means sends out a door lock set signal, and the door lock mechanism locks the door. Further, when it is determined that the key has been forgotten based on the instruction signal, the door signal, and the key signal, the forget-to-remove-the-key alarm determining means sends out an alarm set signal and a door unlock signal. When it is determined that the key has been removed under the output state of this alarm set signal, the alarm stop first condition determining means generates a stop condition signal for stopping the alarm.
On the other hand, if it is determined that the key is still in the inserted state under the output state of the alarm set signal, the second
The condition determining means determines the door signal and the vehicle speed signal,
When it is determined that the door is closed based on the door signal and that the vehicle is running based on the vehicle speed signal, a stop condition signal to stop the alarm is generated. Here, the alarm means issues an alarm using an alarm set signal, holds the alarm, and stops the alarm using an alarm reset signal based on the stop condition signal. Therefore, even if the key is inserted, simply closing the door will not stop the alarm.

〔Effect of the invention〕

As described above, since the door lock mechanism and the unlock mechanism operate based on the door lock set signal and the door unlock set signal, respectively, the automatic lock operation is performed by controlling these signals using the vehicle speed signal. This can be performed in combination with the unlock operation when you forget to remove the key. In addition, the present invention also provides a key when the key is forgotten to be removed.
Once the alarm has been generated, the first
condition, or if the key is still in the inserted state, the alarm can be maintained until a second condition is reached, in which the door is closed and the vehicle is traveling based on the vehicle speed signal. Therefore, once an alarm is generated, if the door is closed with the key inserted, the alarm will remain in effect without being stopped, so the alarm will be maintained until the key is removed when the vehicle is stopped. The effect is that it can be done.

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is an overall configuration diagram showing one embodiment of the present invention, in which an on-vehicle microcomputer is used that executes digital arithmetic processing using software according to a predetermined control program.

In FIG. 1, 1 is a vehicle speed sensor that counts on/off signals from a reed switch built into the meter and issues a vehicle speed signal indicating the counted number when necessary; 2 detects the opening/closing of a door;
A door switch serves as an alighting detection means that issues a door signal as an alighting signal when the door is open, indicating that the driver is in a state of alighting. 3 detects whether or not the vehicle key is inserted into a key box inserted at the start of driving. 4 is a key sensor as a key detection means that emits a key signal when the vehicle key is inserted into the key box, and 4 is an indicator provided both inside and outside the vehicle on the driver's side door, and is connected to each other. A lock switch is activated to issue an instruction signal when the driver or other occupant of the vehicle instructs the driver's side door to be locked, and a lock switch is activated to release the instruction signal and mechanically unlock the door. It consists of an unlock switch that is operated at the same time, and is constructed so that the lock switch and the unlock switch are not turned on at the same time.

5 is a single-chip microcomputer that executes software digital arithmetic processing according to a control program including a predetermined door lock control program, and constitutes an arithmetic processing means, and a several megahertz (MHz) crystal oscillator 6 It is activated by connecting the power supply and receiving a stabilized voltage from a stabilized power supply circuit (not shown) that receives power from the on-board battery and generates a stabilized voltage of 5 volts (V). be. Then, by the operation of this microcomputer 5, the vehicle speed sensor 1
A lock set signal and lock reset signal are used as control signals to perform various arithmetic operations and lock the door upon receiving a vehicle speed signal from the vehicle, a door signal from the door switch 2, a key signal from the key sensor 3, and an instruction signal from the indicator 4. , generates an unlock set signal and an unlock reset signal as control signals for unlocking the door, as well as a buzzer (alarm) set signal to warn of forgetting to remove the vehicle key and the door being left ajar, and a buzzer to release the same. (Alarm) A reset signal is being generated.

This microcomputer 5 has a read-only memory (ROM) which has a control program in which the calculation procedure for controlling the door lock is sequentially recorded step by step, and a control program including the door lock control program in this ROM, which is stored step by step. The central processing unit (Central
A Processing Unit (CPU), a memory (Random Access Memory (RAM)) that temporarily stores various data related to the arithmetic processing of this CPU and can read the data by the CPU, and a crystal oscillator 6. It is a one-chip large-scale integrated circuit (LSI) device whose main parts are a clock generator that generates reference clock pulses for calculations, and an input/output (I/O) circuit that adjusts the input and output of various signals. It is something.

Reference numeral 7 denotes a buzzer as an alarm means for warning of forgetting to remove the vehicle key or a door being left ajar.It receives a buzzer set signal from the microcomputer 5, holds it and continues sounding the buzzer, and resets the buzzer set signal with the buzzer reset signal. This will stop the buzzer sound. Reference numeral 8 denotes a door lock section of the automobile, which locks the door by starting energizing the first solenoid in response to a lock reset signal from the microcomputer 5 and cutting off energization to the first solenoid in response to a lock reset signal. The second lock switch is activated by the lock mechanism 8a as a drive means which turns on the lock switch and by the unlock set signal from the microcomputer 5.
The unlocking mechanism 8b unlocks the door by starting energizing a second solenoid and cutting off energizing a second solenoid in response to an unlock reset signal, and also turns on the unlocking switch of the indicator 4. .

Next, the operation of the above configuration will be explained with reference to the calculation flowcharts shown in FIGS. 2, 3, and 4.

This FIG. 2 is a calculation flowchart showing detailed calculation processing of the door lock control calculation routine which is the door lock control program of the microcomputer 5.
The figure is a calculation flowchart showing the detailed calculation process of the door lock drive calculation routine which is the door lock drive program in FIG. 2, and FIG. 4 is the detailed calculation process of the door unlock drive calculation routine which is the door unlock drive program in FIG. It is a calculation flowchart shown.

First, the arithmetic processing of this microcomputer 5 will be explained. Now, in a car equipped with this device, the microcomputer 5 receives a stabilized voltage from the stabilized power supply circuit and enters the operating state, and sets its registers, counters, etc. to the initial state necessary for starting arithmetic processing. Initial settings are made to set the first A flag and the first B flag, and then the arithmetic processing of the control program including the door lock control program is repeated at intervals of approximately several hundred milliseconds (msec).

In this repeated calculation, when the door lock control calculation routine is reached, the calculation starts from vehicle speed calculation step 101 in FIG. In this vehicle speed calculation step 101, the vehicle speed signal from the vehicle speed sensor 1 is input, the vehicle speed S at that time is calculated, and the process proceeds to a running determination step 102. In this running judgment step 102, the vehicle speed S obtained in the vehicle speed calculation step 101 is 20
Determine whether the vehicle speed S is 20 km/h or more.
When the vehicle speed S is equal to or higher than 20 km/h, the determination becomes YES, but when the vehicle speed S is less than 20 km/h, the determination becomes NO, and the process proceeds to door lock determination step 103. This door lock judgment step 1
In 03, it is determined whether or not an instruction signal is generated from the indicator 4, and when the instruction signal is not generated, the determination becomes NO, but when the instruction signal is generated, the determination becomes YES, The process advances to door determination step 104. Further, the driving determination step 10
Door determination step 104 is also performed when the determination in step 2 is YES.
Proceed to. In this door determination step 104, it is determined whether or not a door signal is generated from the door switch 2. If the door signal is not generated, that is, the door is closed, the determination will be NO, but if the door signal is not generated. ing. That is, when the door is open, the determination becomes YES, and the process advances to key determination step 105. In this key determination step 105, it is determined whether or not a key signal is generated from the key sensor 3, and the determination becomes NO when a key signal is generated, that is, when the vehicle key is inserted into the key box. When no signal is generated, that is, when the vehicle key is not inserted into the key box, the determination becomes YES, and the routine proceeds to door lock drive calculation routine 200. Also, when the determination in the door determination step 104 is NO, the program proceeds to the door lock drive calculation routine 200. In this door lock drive calculation routine 200, calculations are performed to send a lock set signal and a lock reset signal to the lock mechanism 8a, and the process proceeds to a buzzer stop step 106. In this buzzer stop step 106, a buzzer reset signal for stopping the buzzer sound of the buzzer 7 is sent to the buzzer 7, and one calculation process of the door lock control calculation routine is completed.

On the other hand, if the judgment in the key judgment step 105 is NO, the process proceeds to a buzzer setting step 107, in which a buzzer setting signal is sent to the buzzer 7 to sound a buzzer sound to warn that the key has been forgotten or the door is left ajar.
The process advances to the door unlock drive calculation routine 300.
Further, even when the judgment in the door lock judgment step 103 is NO, the door unlock drive calculation routine 3
Go to 00. In this door unlock drive calculation routine 300, calculations are performed to send an unlock set signal and an unlock reset signal to the unlock mechanism 8b, and the process proceeds to key determination step 108. In this key determination step 108, the same arithmetic processing as in the key determination step 105 is performed, and when the determination is YES, the buzzer stop step 106 is performed.
However, if the determination is NO, the process advances to door determination step 109.

In this door determination step 109, the same calculation process as in the door determination step 104 is performed, and if the determination is YES, one calculation process of the door lock control calculation routine is completed, but if the determination is NO, the stop determination step is performed. Proceed to 110. In this stop determination step 110, the vehicle speed calculation step 10 is performed.
Determine whether the vehicle speed S obtained in step 1 is 0,
When the vehicle speed S is 0, the determination becomes YES and one calculation process of the door lock control calculation routine is completed, but when the vehicle speed S is not 0, the determination becomes NO and the process proceeds to the buzzer stop step 106.

Incidentally, here, a series of determination processes including a running determination step 102, a door determination step 104, and a door lock drive calculation routine 200 function as door lock determination means. That is, when the vehicle speed signal is above a predetermined value and it is determined that the door is closed based on the door signal, it functions as a door lock determining means that sends out a door lock set signal. Further, a series of determination processes including a door lock determination step 103, a door determination step 104, a key determination step 105, a buzzer set step 107, and a door unlock drive calculation routine 300 function as a key removal alarm determination means. That is, if it is determined that the door is locked based on the instruction signal, that the door is open based on the door signal, and that the key is inserted based on the key signal, an alert is issued that the key has been forgotten. Therefore, it functions as a forget-to-remove-the-key alarm determining means that sends an alarm set signal and a door lock set signal. Further, when the determination in the key determination step 108 is YES, when it is determined that the key has been removed based on the key signal under the output state of the buzzer (alarm) signal, the first stop condition that generates the stop condition signal to stop the alarm is established. Functions as a determination means. Further, a series of determination processes from the key determination step 108 to the door determination step 109 and the stop determination step 110 in which the determination is NO functions as an alarm stop second condition determination means. In other words, when it is determined that the key is inserted based on the key signal under the output state of the buzzer (alarm) signal, the door signal and vehicle speed signal are determined, and the door is closed based on the door signal and the vehicle speed signal. Only when it is determined that the vehicle is running, it functions as an alarm stop second condition determining means that generates a stop condition signal to stop the warning. Also, the buzzer stop step 10
6 functions as an alarm stop means.

Next, a detailed explanation of the door lock drive calculation routine 200 will be explained with reference to the calculation flowchart shown in FIG. First, this door lock drive calculation routine 20
0, the program proceeds to unlock reset step 201, sends an unlock reset signal to the unlock mechanism 8b so as not to perform door unlocking and locking at the same time, and proceeds to first A flag determination step 202. In this first A flag determination step 202, it is determined whether or not the first A flag is set. When the first A flag is not set, the determination is NO, but when the first A flag is set, the determination is NO. The determination becomes YES, and the process advances to timer data set step 203. In this timer data set step 203, timer data T indicating approximately 6 seconds is set, and the process advances to door lock set step 204. In this door lock setting step 204, the door is locked and a lock setting signal is sent to the lock mechanism 8a to start energizing the first solenoid in order to turn on the lock switch of the indicator 4, and the first A flag release step 2 is performed.
Proceed to 05. This first A flag release step 2
At step 05, the first A flag that has been set up to that point is canceled and the process advances to step 206 for setting the first B flag. In this first B flag setting step 206, the first B flag is set, and the process advances to subtraction step 207. Further, when the judgment in the first A flag judgment step 202 is NO, the process also proceeds to the subtraction step 207. In this subtraction step 207, the constant "1" is subtracted from the timer data T set in the timer data set step 203 (T=T-1) to update the timer data T.
The process advances to timer determination step 208. In this timer determination step 208, it is determined whether or not the timer data T is 0. If the timer data T is not 0, the determination becomes NO, and one calculation process of the door lock drive calculation routine 200 is completed. When the data T is 0, the determination becomes YES and the process proceeds to lock reset step 209. In this lock reset step 209, a lock reset signal is sent to the lock mechanism 8a to cut off the power supply to the first solenoid in order to prevent burnout of the solenoid, and one calculation process of the door lock drive calculation routine 200 is completed.

In other words, this door lock drive calculation routine 2
At 00, in the first calculation, a lock set signal is sent to the lock mechanism 8a to start energizing the first solenoid, and while the calculation of this door lock drive calculation routine 200 is repeated, the door is locked. When the time of seconds has elapsed, a lock reset signal is sent to the lock mechanism 8a to perform a calculation to cut off the energization to the first solenoid. Therefore, since the door is locked by this, the door cannot be unlocked unless the door unlock operation is performed.

Next, the door unlock drive calculation routine 300
A detailed explanation will be given with reference to the calculation flowchart shown in FIG. First, by reaching the door unlock drive calculation routine 300, the program proceeds to a lock reset step 301, in which a lock reset signal is sent to the lock mechanism 8a so as not to lock and unlock the door at the same time, and a first B flag determination step 302 is performed. Proceed to. In this first time B flag determination step 302, it is determined whether or not the first time B flag is set. If the first time B flag is not set, the determination is NO, but if the first time B flag is set, When the timer data is set, the determination becomes YES and the process advances to timer data set step 303. In this timer data set step 303, the same arithmetic processing as in the timer data set step 203 of FIG. 3 is performed, and the process proceeds to a door unlock set step 304. In this door unlocking set step 304, the door is unlocked and an unlocking signal is sent to the unlocking mechanism 8b to start energizing the second solenoid in order to turn on the unlocking switch of the indicator 4. The process advances to B flag release step 305. In this first time B flag release step 305, the first time B flag that has been set up to that point is released, and the process advances to first time A flag setting step 306. In this first A flag setting step 306, the first A flag is set, and the process advances to subtraction step 307. Further, when the judgment in the first B flag judgment step 302 is NO, the process also proceeds to the subtraction step 307. This subtraction step 307
Then, the same calculation process as the subtraction step 208 in FIG. 3 is performed, and the process proceeds to the timer determination step 308.
In this timer judgment step 308, the same calculation process as in the timer judgment step 208 in FIG.
If the determination is YES, the process advances to unlock reset step 309. In the unlocking reset step 309, an unlocking reset signal for cutting off the power to the second solenoid is sent to the unlocking mechanism 8b in order to prevent the solenoid from burning out.
Finish the calculation process.

That is, in the first calculation in this door unlock drive calculation routine 300, an unlock set signal is sent to the unlock mechanism 8b and energization of the second solenoid is started, and while this door lock drive calculation routine 300 is repeated, The door is unlocked immediately, and when about 6 seconds have elapsed, an unlock reset signal is sent to the unlock mechanism 8b to perform a calculation to cut off the power supply to the second solenoid. Therefore, since the door is locked by this, the door cannot be locked unless the door lock is operated.

Next, the overall operation of door lock control in various states will be explained.

First, when a stabilized voltage is supplied to the microcomputer 5 from a stabilized power supply circuit (not shown), the microcomputer 5 enters the operating state, sets its registers, counters, etc. to the initial state necessary for starting arithmetic processing, and Round A flag and 1
Initial settings are made to set the B flag and reset the buzzer flag.

At this time, if the door lock control calculation routine is reached when the instruction from the indicator 4 is unlocked and the vehicle key has not been inserted into the key box, the calculation starts from vehicle speed calculation step 101, calculates the vehicle speed S, and proceeds to running determination step 102. . However, at this time, since the vehicle has not yet traveled, the determination in the traveling determination step 102 is NO. Then, the process advances to door lock determination step 103, where the determination becomes NO, and the process advances to door unlock drive calculation routine 300. And this door unlock calculation routine 3
Unlock mechanism 8 unlocks the unlock set signal at 00.
b, and proceeds to key determination step 108, where the determination becomes YES, and buzzer stop step 10
The program proceeds to step 6, where a buzzer reset signal is sent to the buzzer 7, and one calculation process of the door lock control calculation routine is completed. Then, after a certain period of time, the door lock control calculation routine is reached again and the above calculation is repeated. Thereafter, the above calculation is repeated at a period of several hundred milliseconds, but since the second solenoid is energized during the first approximately six seconds, the door is unlocked.

Then, when the vehicle key is inserted into the key box, the engine is started, the door is closed, and the vehicle starts driving, when the key determination step 108 is reached, the determination is made.
Reversed from YES to NO, door judgment step 109
The process advances to step 110, where the determination becomes NO, and the process advances to stop determination step 110, where the determination becomes NO, and the process advances to buzzer stop step 106, where one calculation process of the door lock control calculation routine is completed. After that, by repeating this calculation at a cycle of several hundred milliseconds,
Keep the door unlocked.

Thereafter, when the vehicle speed S increases to 20 km/h or more, when the vehicle reaches the running determination step 102, the determination is reversed from NO to YES, and the door determination step 1 is reached.
Proceed to 04. Then, this door judgment step 10
When the determination in step 4 becomes NO, the program proceeds to the door lock drive calculation routine 200, sends a lock set signal to the lock mechanism 8a, and proceeds to the buzzer stop step 106, completing one calculation process of the door lock control calculation routine. Thereafter, the above calculation from the vehicle speed calculation step 101 to the buzzer stop step 106 is repeated at a cycle of several hundred milliseconds, and the first solenoid is energized for the first 6 seconds, so that the door is closed. At the same time, the lock switch of the indicator 4 is turned on.

Then, the vehicle starts to decelerate, and the vehicle speed S increases to 20 km/h.
When it becomes smaller than h, the determination in the running determination step 102 is reversed from YES to NO, and the process proceeds to the door lock determination step 103. However, since the lock switch of the indicator 4 has been turned on, the determination becomes YES, and the determination is made in the door determination step 104. Proceed to. Then, the determination becomes NO, the program proceeds to the door lock drive calculation routine 200 to perform the calculation process, and proceeds to the buzzer stop step 106 to complete one calculation process of the door lock control calculation routine. Thereafter, from vehicle speed calculation step 101 to buzzer stop step 10
By repeating the above operations up to step 6 at a cycle of several hundred milliseconds, the door remains locked.

Thereafter, when the vehicle is stopped, the vehicle key is removed from the vehicle box, and the unlock switch of the indicator 4 is turned on, when the door lock determination step 103 is reached, the determination is reversed from YES to NO, and the process proceeds to the door unlock drive calculation routine 300. . This door unlock drive calculation routine 300
Then, the unlocking set signal is sent to the unlocking mechanism 8b, and the process advances to key determination step 108, where the determination becomes YES, and the process advances to buzzer stop step 107, completing one calculation process of the door lock control calculation routine. Thereafter, the above calculation from the vehicle speed calculation step 101 to the buzzer stop step 106 is repeated at a cycle of several hundred milliseconds, and the second solenoid is energized for the first 6 seconds, so the door is unlocked. be done.

Then, open the door, close the door, insert the vehicle key into the vehicle key slot of the indicator 4 provided at the outer door, turn it to the lock switch side, and insert the lock switch, and the door lock will be determined. When step 103 is reached, the judgment is
Reversed from NO to YES, door judgment step 104
Then, the determination becomes NO, and the process advances to the door lock drive calculation routine 200. Then, in this door lock drive calculation routine 200, a lock set signal is sent to the lock mechanism 8a, and the process proceeds to a buzzer stop step 106 to complete one calculation process of the door lock control calculation routine. After that, this operation will be repeated several hundred times.
Repeatedly at a period of msec, the first
The door is locked because the solenoid is energized.

Next, unlock the door from outside the car, enter the car, and after driving, remove the vehicle key from the key box, unlock the door from inside the car, open the door, lock the door from the inside of the door, and then close the door from the outside. Let's explain the case.

First, insert the vehicle key into the vehicle key slot of the indicator 4 provided at the outer door, turn it to the unlock side, and press the unlock switch.When the door lock determination step 103 is reached, The determination becomes NO, and the process proceeds to the door unlock drive calculation routine 300. Then, in this door unlock drive calculation routine 300, an unlock set signal is sent to the unlock mechanism 8b, and the process proceeds to key judgment step 108, where the judgment becomes YES, and the process proceeds to buzzer stop step 106, where one of the door lock control calculation routines is executed. Finish the calculation process. Thereafter, this calculation is repeated at a cycle of several hundred milliseconds, and the second solenoid is energized for the first approximately six seconds, so that the door is unlocked.

Thereafter, the arithmetic processing from when the vehicle starts traveling until it stops and unlocks the door from the inside is similar to the arithmetic processing described above. Then, the door lock control calculation routine when the door is unlocked starts calculation from vehicle speed calculation step 101,
Proceed to driving judgment step 102 and if the judgment is NO
, the program proceeds to door lock determination step 103, where the determination becomes NO, and the program proceeds to door unlock drive calculation routine 300, where the calculation process is performed.
Proceeding to key determination step 108, the determination is made.
If the answer is YES, proceed to the buzzer stop step 106 and complete a series of arithmetic processing for hundreds of times.
It is repeated at a period of msec.

At this time, when the driver opens the door and turns on the lock switch of the indicator 4 inside the door, when the door lock determination step 103 is reached, the determination is made.
Reversed from NO to YES, door judgment step 104
Then, the process proceeds to key judgment step 105, where the vehicle key is removed from the key box, so the judgment becomes YES, and the process proceeds to door lock drive calculation routine 200. Then, in this door lock drive calculation routine 200, a lock set signal is sent to the lock mechanism 8a, and the process proceeds to a buzzer stop step 106 to complete one calculation process of the door lock control calculation routine. Thereafter, this calculation is repeated at a cycle of several hundred milliseconds, and the first solenoid is energized for the first 6 seconds, so that the door is in a locked state.

Then, if you close the door from the outside, the door will be locked.

Next, unlock the door from outside the car, enter the car, and after driving, unlock the door from inside the car, open the door, lock the door from the inside of the door with the car key in the key box, and open the door from the outside. I will explain what happens when it is closed.

In this case, the calculation process from unlocking the door from the outside of the vehicle to unlocking the door from the inside after driving is the same as the calculation process described above.

At this time, if you open the door with the vehicle key inserted in the key box and turn on the lock switch of the indicator 4 inside the door, when the door lock judgment step 103 is reached, the judgment will change from NO to NO.
The result is reversed to YES, the process advances to door determination step 104, the determination becomes YES, and key determination step 1
The process proceeds to step 05, where the determination becomes NO, and the process proceeds to buzzer set step 107. Then, in this buzzer set step 107, a buzzer set signal is sent to the buzzer 7, and the door unlock drive calculation routine 3
The program proceeds to step 00 and performs the arithmetic processing, then advances to key decision step 108 where the decision becomes NO, and the decision at door decision step 109 becomes YES, completing one arithmetic process of the door lock control arithmetic routine. Thereafter, by repeating this calculation at a cycle of several hundred milliseconds, the buzzer continues to sound to notify the driver that he has forgotten to remove the key, and the door remains unlocked. Then, when the driver realizes that he forgot to remove the key and pulls out the vehicle key from the key box,
When the key determination step 105 is reached, the determination is
The state is reversed from NO to YES, and the process proceeds to the door lock drive calculation routine 200. Then, in this door lock drive calculation routine 200, a lock set signal is sent to the lock mechanism 8a, and the process proceeds to a buzzer stop step 106, where a buzzer reset signal is sent to the buzzer 7, completing one calculation process of the door lock drive calculation routine. Thereafter, by repeating this calculation at a cycle of several hundred milliseconds, the buzzer sound is stopped and the door is locked. Therefore, if you close the door from the outside, the door will be locked.

Next, we will explain what happens when you start driving from inside the car with the doors ajar without locking them, and the vehicle speed reaches 20 km/h or more.

First, when the vehicle starts driving with the doors ajar, the door lock calculation routine starts calculation at vehicle speed calculation step 101, proceeds to running judgment step 102, where the judgment becomes NO, and proceeds to door lock judgment step 103, where the judgment becomes NO. Then, the program proceeds to the door unlock drive calculation routine 300 to perform the calculation process, and then proceeds to the key determination step 108 where the determination becomes NO and the door determination step 109 is executed.
Proceed to and perform the calculation that makes the judgment YES,
This calculation is repeated at a cycle of several hundred milliseconds.

At this time, when the vehicle speed S increases to 20 km/h or more, when the vehicle reaches the running determination step 102, the determination is reversed from NO to YES, and the door determination step 1
Proceeding to step 04, the determination becomes YES, proceeding to key determination step 105, the determination becomes NO,
The program proceeds to the buzzer set step 107 to send a buzzer set signal to the buzzer 7, proceeds to the door unlock drive calculation routine 300 to perform the calculation process, and proceeds to the key determination step 108 to make the determination.
The result is NO, and the process advances to door determination step 109, where the determination becomes YES, completing one calculation process of the door lock control calculation routine. Thereafter, by repeating this calculation, a buzzer sounds to notify the driver that the door is ajar, and the door remains unlocked.

Then, when the driver notices that the door is ajar, reduces the vehicle speed, uses the brakes, etc. in an attempt to completely close the door, and when the vehicle speed S becomes less than 20 km/h, it is determined that the vehicle is running at run determination step 102. is reversed from YES to NO, the process proceeds to door lock judgment step 103, the judgment becomes NO, and the calculation is changed to proceed to door unlock drive calculation routine 300. After that, when the driver closes the door, when the door judgment step 109 is reached, the judgment is reversed from YES to NO, and the stop judgment step 1 is reached.
Step 10 proceeds to step 10, where the judgment becomes NO since the door has not completely stopped yet, and the process proceeds to buzzer stop step 106, where a buzzer reset signal is sent to buzzer 7 and one calculation process of the door lock control calculation routine is completed. Thereafter, by repeating this calculation at a cycle of several hundred milliseconds, the buzzer sound is stopped and the door is kept unlocked.

Next, a case will be described in which the lock switch of the indicator 4 is turned on from the inside with the door ajar, and the vehicle key is inserted into the key box.

First, when the lock switch of the indicator 4 is turned on from the inside with the door ajar, this door lock control calculation routine starts calculation at vehicle speed calculation step 101, advances to running judgment step 102, and the judgment becomes NO, and the door lock is closed. Judgment step 103
The process proceeds to step 104, where the judgment becomes YES, proceeds to door judgment step 104, where the judgment becomes YES, and proceeds to key judgment step 105, where the judgment is made because the vehicle key has not been inserted into the key box yet.
YES, door lock control calculation routine 20
Go to 0. Then, in this door lock control calculation routine 200, the lock set signal is set to the lock mechanism 8a.
1 and proceeds to step 106 to stop the buzzer.
Finish the calculation process. After that, this operation will be repeated several hundred times.
The door is locked by repeating this at a cycle of msec.

At this time, when the vehicle key is inserted into the key box, the process proceeds to key determination step 105, where the determination is reversed from YES to NO, and the process proceeds to buzzer set step 108, where the buzzer set signal is set to buzzer 7.
Door unlock drive calculation routine 30
Go to 0. Then, in this door unlock drive calculation routine 300, an unlock set signal is sent to the unlock mechanism 8b, and a key determination step 108 is performed.
At step 109, the determination is reversed from YES to NO, and at door determination step 109, the determination becomes YES, completing one calculation process of the door lock control calculation routine. Thereafter, this calculation is repeated at a cycle of several hundred milliseconds, but when the unlock switch of the indicator 4 is turned on by energizing the second solenoid of the unlock mechanism 8b by the unlock set signal, the process proceeds to door lock determination step 103. When the vehicle arrives, the determination is reversed from YES to NO, and the calculation is changed to proceed to the door unlock drive calculation routine 300. Thereafter, by repeating this calculation at a cycle of several hundred milliseconds, a buzzer sounds to notify the driver that the door is ajar, and the door is unlocked.

Then, the driver noticed that the door was ajar.
When the door is closed again and the lock switch of the indicator 4 inside the door is turned on, when the door lock judgment step 103 is reached, the judgment is reversed from NO to YES, and the process proceeds to door judgment step 104, where the judgment is changed from YES to NO. Then, the program proceeds to the door lock drive calculation routine 200. Then, in this door lock drive calculation routine 200, a lock set signal is sent to the lock mechanism 8a, and a buzzer stop step 10 is started.
The program proceeds to step 6, where a buzzer reset signal is sent to the buzzer 7, and one calculation process of the door lock drive calculation routine is completed. Thereafter, by repeating this calculation at a cycle of several hundred milliseconds, the door is locked and the buzzer sound is stopped.

As explained above, in this embodiment, the door lock is controlled by the microcomputer 5, and when it is determined that the door is open, the key has not been removed, or a door lock instruction has been given, a buzzer sounds to alert the door. Since the door is unlocked at the same time as the key is emitted, it is possible to notify the driver that he has forgotten to remove the key, and to prevent the door from being closed and locked from the outside while the vehicle key is still inserted in the key box. Additionally, when the vehicle speed exceeds 20 km/h with the doors ajar, or when the doors are locked from inside the vehicle with the doors ajar, a buzzer sounds to warn you, thereby preventing you from driving with the doors ajar. Furthermore, regarding door unlocking, the door is unlocked via the microcomputer 5 and also by mechanical operation, so if the microcomputer malfunctions for some reason after the door is locked. Even when you are tired, you can unlock the door mechanically.

In the above embodiment, the door unlocking can also be operated mechanically by turning on the unlock switch of the indicator 4, but the door can be unlocked based only on the signal from the indicator 4.
A switch for mechanically operating the door unlocking may be provided separately from the unlocking switch of the indicator 4. Further, the mounting position of the indicator 4 is not limited to the door on the driver's seat side, but may be mounted near a key box or a console box so that the door lock instruction can be easily given. Furthermore, an emergency switch is provided in place of the switch that mechanically operates the door unlock, so that when the microcomputer 5 becomes abnormal for some reason, the indicator 4 can be used to control the door lock by turning on the emergency switch. The signal from the device 4 may be directly transmitted to the door lock section 8. In other words,
The signal from the microcomputer 5 and the signal from the indicator 4 through a 6-second timer circuit are input to the multiplexer, and when the signal when the emergency switch is not pressed is input to the control terminal of the multiplexer, the signal from the indicator 4 is input to the multiplexer. The signal from the indicator 4 is transmitted to the door lock part, and when the signal generated when the emergency switch is pressed is input to the control terminal of the multiplexer, the signal is transmitted from the indicator 4 to the door lock part via the time circuit.

Furthermore, in the above embodiment, this door lock control was explained only for the door on the driver's seat side, but in order to easily perform the door lock operation for all the doors of the car, the door lock control for all the doors can be performed using the indicator 4. You may also do this. Further, although the buzzer 7 is used as the warning means, a device for lowering the window glass or a device for raising the trunk may be used to more reliably warn that the key has been forgotten. Furthermore, although the indicator 4 having a lock switch and an unlock switch is shown as an indicating means, an indicator having one push button type switch is used, and when the switch is turned on, an instruction signal is issued to lock the door, and when the switch is not turned on, an instruction signal is issued to lock the door, and when the switch is not turned on, an instruction signal is issued. The door may be locked by canceling the signal.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
Fig. 2 is a calculation flowchart showing the calculation processing by the control program of the microcomputer in Fig. 1; Fig. 3 is a calculation flowchart showing the detailed calculation processing of the door lock drive calculation routine in Fig. 2; 2
2 is a calculation flowchart showing detailed calculation processing of the door unlock drive calculation routine shown in the figure. 2...Door switch as means for detecting getting off, 3
...Key sensor as key detection means, 4...Indicator as instruction means, 5...Microcomputer as calculation processing means, 7...Buzzer as alarm means, 8a, 8b...Lock mechanism as drive means , unlock mechanism.

Claims (1)

[Scope of Claims] 1. A vehicle speed sensor that generates a vehicle speed signal; a key detection device that detects that a vehicle key is inserted into a key box and generates a key signal; and a key detection device that detects opening and closing of a vehicle door and generates a door signal. a door opening/closing detection means that generates a signal; an instruction means that detects that a door lock instruction is given and generates an instruction signal; When it is done,
door lock determination means for transmitting a door lock set signal; the door is locked based on the instruction signal, and the door is opened based on the door signal;
and a forget-to-remove-the-key alarm determining means for transmitting an alarm set signal and a door unlock set signal to warn of the forget-to-remove key state when determining that the key is inserted based on the key signal; and the alarm signal. an alarm stop first condition determining means that generates a stop condition signal to stop the alarm when it is determined that the key has been removed based on the key signal under the output state of the alarm signal; When the key insertion state is determined based on the door signal and the vehicle speed signal, the alarm should be stopped when it is determined that the door is closed based on the door signal and that the vehicle is running based on the vehicle speed signal. alarm stop second condition determining means for generating a stop condition signal; alarm means for issuing and holding a warning to the driver using the alarm set signal; and stopping the alarm using the alarm reset signal; and the door lock set signal. 1. A door lock control device for an automobile, comprising: a door lock mechanism that locks the door according to the door unlock setting signal; and an unlock mechanism that unlocks the door according to the door unlock set signal.