JP2018031226A - Automatic lock control device and automatic lock control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic lock control device and automatic lock control method that enable attachment of an automatic lock function by a simple reform without replacing an existing ECU.SOLUTION: An automatic lock control device attached to a door lock system including a function that when a door lock request switch is turned on in the case that a key of a vehicle is off and all doors are closed, locks a door when no portable apparatus 13 exists inside a vehicle interior and emits an alarm when a portable apparatus 13 exists inside the vehicle interior comprises a timer 33 for counting elapsed time after the key is turned off and all doors are closed. The automatic lock control device, when the request switch is not turned on and the timer 33 counts a predetermined period of time, outputs a pseudo ON signal of the request switch to the door lock system 101. The automatic lock control device, when no alarm is emitted, outputs a door lock control signal to the door lock system.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an automatic lock control device that controls locking and unlocking of a vehicle door, and an automatic lock control method.

  In the conventional automatic lock control device, when the vehicle is stopped and the key is turned off, all the doors of the vehicle are closed, and the request switch is pushed from the outside of the vehicle by the occupant carrying the portable device, the vehicle The one with the function of locking the door is known. Further, when the request switch is pressed while the portable device is placed in the vehicle, a buzzer sounds and informs the occupant that the portable device remains in the vehicle.

  Further, after the vehicle key is turned off and the door is closed, if the occupant forgets to press the request switch when leaving the vehicle, the door becomes unlocked and theft may occur. Therefore, Patent Document 1 includes an “automatic lock function” that automatically locks the door when a predetermined time has passed without the request switch being pressed, so that the door can be reliably locked even if the request switch is forgotten to be pressed. Locking is disclosed.

  However, when this function is newly added to a vehicle not equipped with the automatic lock function, it is necessary to replace the door lock control ECU. For this reason, there is a problem that the replacement work becomes large and the cost is high.

JP 2013-40491 A

  As described above, in the conventional door lock system, when the automatic lock function is added to the existing system, it is necessary to replace the existing ECU, and there is a problem that the replacement work becomes large.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an automatic lock function with a simple improvement without replacing an existing ECU. An automatic lock control device and an automatic lock control method are provided.

  In order to achieve the above object, the present invention provides a timer for measuring the elapsed time after the vehicle key is turned off and all doors are closed, the request switch is not turned on, and the timer is preset. When the predetermined time is counted, a control unit that outputs a pseudo-on signal of the request switch to the door lock system and outputs a door lock control signal to the door lock system when an alarm is not issued is provided.

  According to the present invention, it is possible to provide an automatic lock function with a simple improvement without replacing an existing ECU.

FIG. 1 is a block diagram showing a configuration of a door lock system to which an automatic lock control device according to an embodiment of the present invention is connected. FIG. 2 is a flowchart showing the processing operation of the automatic lock control device according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a door lock system to which an automatic lock control device (lock control additional ECU 12) according to the present invention is connected.

  As shown in FIG. 1, the door lock system 101 includes a lock control ECU 11. The lock control ECU 11 is supplied with a DC voltage from a power supply Ba. Further, the lock control ECU 11 is connected to motors M1 to M4 for switching between locking and unlocking of each door (four in this example) of the vehicle.

  Further, the lock control ECU 11 can wirelessly communicate with the portable device 13 carried by the occupant, and when the occupant carrying the portable device 13 presses the request switch SW1 (details will be described later) outside the vehicle, You can switch between lock and unlock. Further, the lock control ECU 11 is connected to the buzzer 21, and when the request switch SW1 is pressed in a state where the portable device 13 is present in the vehicle compartment, the lock control ECU 11 sounds the buzzer 21 (provides an alarm). The occupant is informed that the portable device 13 has been left behind in the passenger compartment.

  The lock control ECU 11 is connected to a request switch SW1 for door lock, a door lock state switch SW2, four door switches SW3 to SW6, and a key switch SW7.

  The key switch SW7 is a switch for switching on / off of the key of the vehicle. The door switches SW3 to SW6 are switches that switch according to the open / closed state of each door (four in this example) mounted on the vehicle, and are turned off when the door is opened and turned on when the door is closed. The door lock state switch SW2 is a switch that switches depending on whether or not the vehicle door is locked, and is turned on when locked and turned off when unlocked.

  The request switch SW1 is attached, for example, in the vicinity of the door knob on the outside of the driver seat door and the passenger seat door, and is a switch that switches between locking and unlocking the door from the outside of the vehicle. Specifically, when the passenger carrying the portable device 13 presses the request switch SW1 from the outside of the vehicle when the vehicle key is off and all the doors are closed, the door is locked from the unlocked state to the locked state. You can switch to Further, when the passenger carrying the portable device 13 presses the request switch SW1 while the door is in the locked state, the door can be switched to the unlocked state.

  The lock control ECU 11 is connected to CAN (Controller Area Network) communication mounted on the vehicle. As will be described later, by CAN communication, signals indicating the on / off states of the door switches SW3 to SW6 mounted on the vehicle, signals indicating the on / off states of the door lock state switch SW2, and the keys SW7 A signal indicating the on / off state can be transmitted to the lock control additional ECU 12.

  The lock control ECU 11 is connected to a lock control additional ECU 12 (hereinafter abbreviated as “additional ECU 12”). The additional ECU 12 has a function of automatically locking a door (hereinafter referred to as “automatic lock function”) when the passenger forgets to press the request switch SW1 when leaving the vehicle. Can be attached.

  As shown in FIG. 1, the additional ECU 12 includes an input / output unit 31, a control unit 32, and a timer 33 that measures time. Further, a DC voltage is supplied from the power source Ba. The input / output unit 31 is connected to CAN communication by electric wires L1 and L2. Therefore, the control unit 32 transmits signals indicating the on / off states of the door switches SW3 to SW6, signals indicating the on / off states of the door lock state switch SW2, and key switches obtained by the lock control ECU 11 through CAN communication. A signal indicating the on / off state of SW7 can be acquired.

  Further, the input / output unit 31 is connected to the request switch SW1 by an electric wire L5, connected to the buzzer 21 by an electric wire L4, and connected to the lock control ECU 11 by an electric wire L3. Therefore, the control unit 32 can acquire a signal indicating whether or not the request switch SW1 is operated and a signal indicating whether or not the buzzer 21 is sounding.

  When the vehicle key is turned off (SW7 is turned off), all the doors of the vehicle are closed (SW3 to SW6 are turned on), and the doors are not locked (SW3 is turned off). In addition, the timer 33 is operated to measure the elapsed time.

  Further, it is determined whether or not the request switch SW1 is turned on. If the request switch SW1 is not turned on and the timer 33 counts a predetermined time (for example, 20 seconds), the request switch SW1 is connected via the electric wire L3. A pseudo ON signal of the request switch SW1 is output to the lock control ECU 11. The pseudo-on signal is a signal for confirming the sound of the buzzer 21. That is, when the pseudo-on signal is input, the lock control ECU 11 outputs an operation signal to the buzzer 21 and makes the buzzer 21 sound when the portable device 13 exists in the vehicle interior. When the portable device 13 does not exist in the passenger compartment, no operation signal is output to the buzzer 21. Therefore, the buzzer 21 does not sound. Further, since the pseudo-on signal is a signal for confirming the sound of the buzzer 21, the lock control ECU 11 does not perform the door lock control by inputting the pseudo-on signal.

  The lock control ECU 11 has an automatic lock program written therein, and can change the program from the vehicle information transmission network using a vehicle diagnostic device or the like. Therefore, it is possible to perform door lock control based on the door lock control signal output from the additional ECU 12.

  Next, a processing procedure of the automatic lock control device according to the present embodiment configured as described above will be described with reference to a flowchart shown in FIG. First, in step S11, the control unit 32 determines whether or not the vehicle key is turned off based on a signal acquired from CAN communication.

  If it is determined that the key is off (YES in step S11), in step S12, the control unit 32 determines whether all the doors of the vehicle are closed based on a signal acquired by CAN communication. to decide.

  When all the doors are closed (YES in step S12), in step S13, the control unit 32 determines whether or not the vehicle door is locked. This processing is also determined based on data acquired by CAN communication as in S11 and S12. For example, when the door lock state switch SW2 is turned on inside the vehicle and the door is locked, it is determined that the door is locked. When the passenger carrying the portable device 13 for door lock control gets off and pushes the request switch SW1 outside the vehicle to lock the door, it is determined that the door is locked.

  If the door is locked (YES in step S13), the door lock control is unnecessary, and the process is terminated.

  If the door is not locked (NO in step S13), in step S14, the control unit 32 activates the timer 33, the vehicle key is turned off, and all the doors are closed. Count elapsed time.

  If the elapsed time has not reached the predetermined time (NO in step S14), in step S18, the control unit 32 determines whether the key is turned on and whether the door is opened. If the key is turned on or at least one door is opened before the time measured by the timer 33 reaches a predetermined time (for example, 20 seconds) set in advance (YES in step S18), The process returns to step S11. That is, when the door is opened or when the key is turned on, there is an occupant in the vehicle, so the door lock has not been forgotten, and it is not necessary to lock the door. To return.

  On the other hand, when the elapsed time reaches the predetermined time (YES in step S14), in step S15, the control unit 32 outputs a pseudo-on signal of the request switch SW1 to the lock control ECU 11.

  In step S <b> 16, the control unit 32 determines whether or not the buzzer 21 has sounded. When the request switch SW1 is turned on while the portable device 13 is present in the vehicle compartment, the lock control ECU 11 sounds the buzzer 21 in order to warn that the portable device 13 is left behind in the vehicle. Similarly, the lock control ECU 11 sounds the buzzer 21 even when a pseudo-on signal is input. Therefore, when the signal indicating the sound of the buzzer 21 is acquired (YES in step S16), the control unit 32 determines in step S17 that the portable device 13 is present in the vehicle, and the lock control signal. Is not output.

  On the other hand, if the buzzer 21 does not sound (NO in step S16), the control unit 32 outputs a lock control signal to the lock control ECU 11 in step S19. When the lock control signal is input, the lock control ECU 11 outputs a drive signal to each of the motors M1 to M4 to lock the door.

Thus, even when the vehicle occupant leaves the vehicle without pressing the request switch SW1, the door can be automatically locked after a predetermined time (for example, 20 seconds) has elapsed.
Thus, in the door lock system 101 equipped with the additional ECU 12 (automatic lock control device) according to the present embodiment, the vehicle key is turned off, all the doors are closed, and the door lock request switch SW1 is turned on. When the portable device 13 does not exist in the passenger compartment, the door is controlled to be locked.

  Accordingly, when the occupant gets off the vehicle and leaves the vehicle, the door can be automatically locked after a predetermined time has elapsed even if the request switch SW1 is forgotten to be pressed or not intentionally pressed. Therefore, for example, when the occupant frequently leaves the vehicle, such as a courier vehicle, forgetting to lock the door can be prevented. Furthermore, since the door is automatically locked after 20 seconds have elapsed, there is no need to perform an operation of pressing the request switch SW1, and the work efficiency of the driver of the courier can be improved.

  Further, since the door is not locked when the portable device 13 is present in the vehicle interior, the problem of locking the door while leaving the portable device 13 in the vehicle interior can be solved.

  Furthermore, since the additional ECU 12 (automatic lock control device) according to the present embodiment can be attached to the existing door lock system 101, it is necessary to replace the existing lock control ECU 11 with an ECU having a new function. Absent. That is, by attaching the automatic lock control device according to the present embodiment to the existing door lock system 101, the door can be automatically locked, so that no major remodeling can be required. Furthermore, versatility can be improved and it can be attached at low cost.

  Further, when the door is opened or the key is turned on while the timer 33 counts the predetermined time, the timer 33 stops timing, so that an unnecessary door lock operation is avoided. be able to.

  Furthermore, since the additional ECU 12 acquires the opening / closing of the door and the on / off of the key through CAN communication, the additional work can be easily performed.

  As described above, the automatic lock control device and the automatic lock control method of the present invention have been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each unit may be any arbitrary function having the same function. It can be replaced with a configuration one.

11 Lock control ECU
12 Additional lock control ECU (automatic lock control device)
13 portable device 21 buzzer 31 input / output unit 32 control unit 33 timer 101 door lock system Ba power supply L1 to L5 electric wire M1 to M4 motor SW1 request switch SW2 door lock state switch SW3 to S6 door switch SW7 key switch

Claims (4)

When the vehicle key is off, all doors are closed, and the door lock request switch is turned on,
An automatic lock control device attached to a door lock system having a function of locking a door when a portable device does not exist in the passenger compartment and issuing a warning when a portable device is present in the passenger compartment,
A timer for measuring the elapsed time after the key is off and all doors are closed;
When the request switch is not turned on and the timer counts a predetermined time set in advance, a pseudo-on signal of the request switch is output to the door lock system, and the alarm is not issued. A controller that outputs a door lock control signal to the door lock system;
An automatic lock control device comprising: 2. The control unit according to claim 1, wherein when the key is turned on or at least one door is opened during timing of the timer, the control unit stops timing of the timer. Automatic lock control device. 3. The automatic lock control device according to claim 1, wherein the control unit is connected to CAN communication and acquires ON / OFF of the key and opening / closing of the door by CAN communication. When the vehicle key is off, all doors are closed, and the door lock request switch is turned on,
A control method for controlling a door lock system having a function of locking a door when a portable device does not exist in the vehicle interior and issuing an alarm when a portable device is present in the vehicle interior,
Time elapsed after the key is off and all doors are closed,
When the request switch is not turned on and the timed time reaches a predetermined time, a pseudo on signal of the request switch is output to the door lock system,
An automatic lock control method comprising: outputting a door lock control signal to the door lock system when the alarm is not issued.

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