JP6693337B2 - Automatic lock control device and automatic lock control method - Google Patents

Description

  The present invention relates to an automatic lock control device and an automatic lock control method for controlling locking and unlocking of a vehicle door.

  In the conventional automatic lock control device, when the vehicle is stopped, the keys are turned off, all the doors of the vehicle are closed, and the occupant carrying the portable device pushes the request switch from the outside of the vehicle, It is known to have a function of locking the door. Further, when the request switch is pressed while the portable device is placed in the vehicle, the buzzer sounds to inform the occupant that the portable device remains in the vehicle.

  Also, after the key of the vehicle is turned off and the door is closed, if the occupant forgets to press the request switch when leaving the vehicle, the door may be unlocked and theft may occur. Therefore, in Patent Document 1, by providing an "automatic lock function" that automatically locks the door when a predetermined time has elapsed without pressing the request switch, the door can be surely locked even if the request switch is forgotten to be pressed. Locking is disclosed.

  However, when this function is newly added to a vehicle that does not have the automatic lock function described above, it is necessary to replace the ECU for door lock control. Therefore, there is a problem that the replacement work becomes large-scale and the cost becomes high.

JP, 2013-40491, A

  As described above, the conventional door lock system has a problem that when the automatic lock function is added to the existing system, the existing ECU needs to be replaced, which requires a large amount of replacement work.

  The present invention has been made to solve such a conventional problem, and an object thereof 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 counting elapsed time after a vehicle key is turned off and all doors are closed, a request switch is not turned on, and a timer is preset. When the predetermined time is measured, a pseudo ON signal of the request switch is output to the door lock system, and when the alarm is not issued, the door lock system is provided with a door lock control signal.

  According to the present invention, an automatic lock function can be attached 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 a 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 the configuration of a door lock system to which an automatic lock control device (lock control addition 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 lock and unlock of each door (four in this example) of the vehicle.

  Further, the lock control ECU 11 is capable of wireless communication with the portable device 13 carried by the occupant, and the occupant carrying the portable device 13 pushes a request switch SW1 (details will be described later) outside the vehicle to open the door. 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 exists in the vehicle interior, the lock control ECU 11 sounds the buzzer 21 (issues an alarm). Notify the passenger that the portable device 13 has been left in the passenger compartment.

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

  The key switch SW7 is a switch for switching on / off a key of the vehicle. 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 door of the vehicle is locked, and is turned on when locked and turned off when unlocked.

  The request switch SW1 is, for example, attached to the vicinity of the door knob on the outside of the driver's seat door and the passenger seat door, and is a switch for switching the door lock and unlock from the outside of the vehicle. Specifically, when the vehicle key is off and the passengers carrying the portable device 13 press the request switch SW1 from outside the vehicle when all the doors are closed, the doors are unlocked and locked. Can be switched to. Further, when the occupant carrying the portable device 13 presses the request switch SW1 while the door is in the locked state, the occupant can switch to the unlocked state.

  Further, the lock control ECU 11 is connected to CAN (Controller Area Network) communication mounted on the vehicle. Then, as will be described later, by CAN communication, a signal indicating the on / off state of each door switch SW3 to SW6 mounted on the vehicle, a signal indicating the on / off state of the door lock state switch SW2, and a key switch SW7. A signal indicating the on / off state can be transmitted to the lock control addition ECU 12.

  A lock control additional ECU 12 (hereinafter, abbreviated as “additional ECU 12”) is connected to the lock control ECU 11. The additional ECU 12 has a function of automatically locking the door when the occupant forgets to press the request switch SW1 when leaving the vehicle (hereinafter, referred to as an “automatic lock function”). It is possible to attach it.

  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 supply Ba. The input / output unit 31 is connected to CAN communication by the electric wires L1 and L2. Therefore, the control unit 32 uses CAN communication to obtain signals indicating the on / off states of the door switches SW3 to SW6 acquired by the lock control ECU 11, signals indicating the on / off states of the door lock state switch SW2, and the key switch. A signal indicating the on / off state of SW7 can be obtained.

  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 off), all doors of the vehicle are closed (SW3 to SW6 are on), and the doors are not locked (SW3 is off). Then, the timer 33 is activated to measure the elapsed time.

  Further, when it is determined whether or not the request switch SW1 is turned on, the request switch SW1 is not turned on and the timer 33 clocks a predetermined time (for example, 20 seconds), the electric wire L3 is used. The 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 causes the buzzer 21 to sound when the portable device 13 is present in the vehicle interior. If the portable device 13 does not exist in the vehicle 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.

  A program for automatic locking is written in the lock control ECU 11, and the program can be changed 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 the flowchart shown in FIG. First, in step S11, the control unit 32 determines whether or not the key of the vehicle is turned off based on the signal acquired from the CAN communication.

  When 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 the signal acquired by the CAN communication. to decide.

  If all the doors are closed (YES in step S12), the controller 32 determines in step S13 whether the vehicle doors are locked. This processing is also determined based on the 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 to lock the door, it is determined that the door is locked. Further, when the passenger carrying the portable device 13 for door lock control gets off the vehicle 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 not necessary, and this process ends.

  If the doors are not locked (NO in step S13), the control unit 32 activates the timer 33 in step S14 to turn off the key of the vehicle and close all doors. Time elapsed time.

  If the elapsed time has not reached the predetermined time (NO in step S14), the control unit 32 determines in step S18 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 preset predetermined time (for example, 20 seconds) (YES in step S18), The process is returned 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 is not forgotten to be locked, and there is no need to lock the door, so the process proceeds to step S11. Bring back.

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

  In step S16, the control unit 32 determines whether or not the buzzer 21 has sounded. When the request switch SW1 is turned on in the state where the portable device 13 is present in the vehicle compartment, the lock control ECU 11 causes the buzzer 21 to sound to warn that the portable device 13 is left in the vehicle. Similarly, the lock control ECU 11 causes the buzzer 21 to sound even when the 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 output. Is not output.

  On the other hand, when the buzzer 21 does not sound (NO in step S16), the control unit 32 outputs the 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 if the occupant of the vehicle 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.
In this way, 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. At this time, if the portable device 13 does not exist in the vehicle compartment, the door is controlled to be locked.

  Therefore, when the occupant gets off the vehicle and leaves the vehicle, even if the request switch SW1 is forgotten to be pressed or is not intentionally pressed, the door can be automatically locked after the elapse of a predetermined time. 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 passed, it is not necessary to press the request switch SW1 and the work efficiency of the courier driver can be improved.

  In addition, since the door is not locked when the portable device 13 is present in the vehicle compartment, it is possible to solve the problem that the door is locked while the portable device 13 is left in the vehicle cabin.

  Further, 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, since the door can be automatically locked by attaching the automatic lock control device according to the present embodiment to the existing door lock system 101, it is possible to eliminate a major modification. Furthermore, the versatility can be improved and the cost can be reduced.

  Further, when the door is opened or the key is turned on while the timer 33 is counting the predetermined time, the timer 33 stops the timing, thereby avoiding an unnecessary door lock operation. be able to.

  Further, the additional ECU 12 acquires the opening / closing of the door and the ON / OFF of the key by CAN communication, so that the additional work can be easily performed.

  Although the automatic lock control device and the automatic lock control method of the present invention have been described above based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each unit is arbitrary as long as it has the same function. It can be replaced with the one of the configuration.

11 Lock control ECU
12 Additional ECU for lock control (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 on,
An automatic lock control device attached to a door lock system having a function of locking a door when there is no portable device in the vehicle compartment, and issuing a warning when there is a portable device in the vehicle cabin,
A timer for counting the elapsed time after the key is off and all the doors are closed,
When the request switch is not turned on, and when the timer measures a predetermined time set in advance, a pseudo ON signal of the request switch is output to the door lock system, and when the alarm is not issued, A control unit that outputs a door lock control signal to the door lock system,
An automatic lock control device comprising: The control unit suspends the time counting of the timer when the key is turned on or at least one door is opened during the time counting of the timer. Automatic lock control device. The automatic lock control device according to claim 1 or 2, 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 on,
A control method for controlling a door lock system having a function of locking a door when a portable device is not present in the vehicle compartment and issuing an alarm when the portable device is present in the vehicle cabin,
Time elapsed after the key is off and all doors are closed,
When the request switch is not turned on, and when the time count 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 lock control signal for the door to the door lock system when the alarm is not issued.

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