JP2009155839A - Electronic control unit and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control unit which reduces accidents caused because a child sitting on a backseat in a vehicle bounces out. <P>SOLUTION: Characteristically, this electronic control unit for unlocking a door of the vehicle controls the unlocking of a locked door for the backseat, when determining that a door for a front seat in the vehicle is opened, on the basis of information which is stored in a storage section for storing the information from a door opening/closing detecting section for detecting the opening/closing of the door for the front seat in the vehicle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for controlling unlocking of a vehicle door.

  In the conventional vehicle, the child in the passenger seat or the rear seat does not check the vehicle from the rear passing through the side of the vehicle, unlocks the locked door, opens the door and jumps out of the vehicle Because there was an accident of being hit by the vehicle, unlocking the door locked by operating a specific button was performed only by the unlocking operation from the driver's seat and the door knob opening operation by a person outside the vehicle. (Hereafter, this function is called child lock). In other words, the doors of the passenger seat and rear seat that are child-locked can be unlocked by a driver who confirms the vehicle from the rear passing through the side of the vehicle, or the door knob is opened by a driver outside the vehicle. If it is not open, it will not be unlocked, so the number of accidents in which a child opens the door of the vehicle without confirming the vehicle behind the vehicle and jumps over the vehicle is reduced.

As a technique for solving these problems, a device has been proposed that unlocks a child lock after a predetermined time has elapsed since the vehicle whose door is child-locked has stopped running. According to this technology, it is possible to avoid an accident in which a child jumps out without confirming the vehicle behind and passes over the side of the vehicle immediately after the vehicle stops and is hit by the vehicle. And safety was improved.
JP-A-2005-273732

  However, even if the child lock is unlocked after a predetermined time has elapsed since the vehicle stopped running as in this prior art, the child is locked without confirming the vehicle from behind that passes the side of the vehicle. There is a risk that an accident may occur in which the door is unlocked, the door is opened, the vehicle is jumped out of the vehicle, and the vehicle is hit.

  The present invention has been made in view of such problems, and in a vehicle having a child lock function, a vehicle door locking / unlocking control device that can more reliably prevent a jumping accident due to carelessness of a child is provided. It is intended to provide. This problem exists even when elderly people, people with physical disabilities, people with poor physical condition, etc., who are in danger of neglecting safety checks when getting off, get children for convenience. The explanation will be made on the assumption.

  An electronic control device for unlocking a lock on a door of a vehicle is based on information stored in a storage unit that stores information from a door opening / closing detection unit that detects opening / closing of a door of a front seat of the vehicle. When it is determined that the front seat door is opened, the lock of the locked door on the rear seat is controlled to be unlocked.

  According to the electronic control device of the present invention, when it is determined that the front seat door is opened, the lock of the locked door on the rear seat is unlocked. Accidents of jumping out and being hit by a vehicle behind the vehicle passing by the side of the vehicle can be reduced.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The embodiments of the present invention are not limited to the following examples, and it goes without saying that various forms can be adopted as long as they belong to the technical scope of the present invention.

  FIG. 1 is a diagram showing a system configuration of a vehicle door locking / unlocking control apparatus according to the present invention.

  The vehicle door locking / unlocking control device 10 is provided at the center 38 of the driver seat and the passenger seat of the vehicle in FIG. The vehicle door locking / unlocking control device 10 executes an operation based on a ROM 11 storing a vehicle door locking / unlocking control program, a vehicle door locking / unlocking control program, and inputs from various sensors and switches. The CPU 12 that performs output for controlling each actuator, the RAM 13 that functions as a working area that temporarily stores data when the CPU 12 performs calculations, and the data necessary for the CPU 12 to perform calculations are continuously stored. A microcomputer composed of an EEPROM 14 for storing data is provided.

  FIG. 2 is a diagram showing the configuration of sensors, switches, and actuators in the vehicle 37. The vehicle 37 includes a vehicle speed sensor 15, a courtesy switch 16, a mode switch 17, child locks 21 to 24, door locks 25 to 28, an ignition switch 19, and a collision sensor 20. The vehicle speed sensor 15 outputs a pulse in synchronization with the rotation of the wheel, and the CPU 12 recognizes the vehicle speed based on the input of the frequency of the pulse output from the vehicle speed sensor 15. The courtesy switch 16 is disposed at each door, and outputs an on signal when the door is open, and outputs an off signal when the door is closed, and the CPU 12 turns on / off from the courtesy switch 16. Based on the input, the open / closed state of each door is recognized. The mode switch 17 activates or deactivates the child lock function. The mode switch 17 includes a full mode switch 39 and a half mode switch 40. The mode switch 17 outputs an ON signal when the function of each mode is activated, and outputs an OFF signal when the function is not activated. Based on the ON / OFF input from the mode switch 17, the CPU 12 recognizes whether the full mode or the half mode in the mode switch 17 is in the on state or the off state. The door locks 25 to 28 are actuators for locking and unlocking the doors, and the CPU 12 sends signals to the door locks 25 to 28 for controlling the locking and unlocking of the doors based on an input signal from a door lock switch (not shown). The output door locks 25 to 28 lock and unlock the door. The child locks 21 to 24 are actuators for locking and unlocking the doors of the auxiliary seat and the rear seat in the child lock mode, and the CPU 12 receives an input signal from the mode switch 17 including the full mode switch 39 and the half mode switch 40. Based on the above, a signal for locking / unlocking the door is output to the child locks 21 to 24, and the child locks 21 to 24 lock and unlock the door. The ignition switch 19 is provided near the driver's seat and starts the vehicle engine, and is turned on and off by the driver's operation. If the ignition switch 19 is turned on, an engine control device (not shown) starts the engine, and if it is turned off, the engine is stopped. The CPU 12 executes a vehicle door locking / unlocking control program stored in the ROM 11 based on an input signal from the ignition switch 19 and an input signal from the mode switch 17 including the full mode switch 39 and the half mode switch 40. The collision sensor 20 is provided at a predetermined position of the vehicle and detects an impact applied to the vehicle. The CPU 12 detects a rear-end collision with another vehicle or a collision with an object such as a building based on an input from the collision sensor 20, and executes predetermined control described later based on a vehicle door locking / unlocking control program. The impact sensor 20 may also serve as an impact sensor that operates an airbag or the like.

  Next, processing and operations performed by the vehicle door locking / unlocking control apparatus 101 will be described with reference to the flowcharts of FIGS.

  The flowchart of FIG. 5 shows processing and operations performed by the vehicle door locking / unlocking control device 101 after the driver unlocks the vehicle 29 and gets on the vehicle 29 and the driver turns on the ignition switch. It is.

  First, when the driver operates the ignition switch to turn it on, the vehicle door locking / unlocking control device 101 is activated. A mode switch 17 provided on the door 29 of the driver's seat 33 outputs an ON signal to the CPU 12 by an operation by the driver. The CPU 12 in the vehicle door locking / unlocking control device 101 receives this ON output and executes a process for activating the child lock function. (Step 101).

  In step 104, when the CPU 12 determines that the ON signal is input from either the full mode switch 39 or the half mode switch 40 of the mode switches 17 and the vehicle speed is not 0 based on the input from the vehicle speed sensor 15. Return to 101.

  In step 101, the CPU 12 determines whether the output signal from the mode switch 17 is on or off. If the output signal is off, the CPU 12 again monitors whether the output from the mode switch 17 is on or off. If it is ON, a control signal for turning on all the child locks 21 to 24 is outputted (step 102), and a control signal for turning on all the door locks 25 to 28 is outputted (step 103).

  In step 104, it is determined whether or not the vehicle has stopped based on the pulse signal output from the vehicle speed sensor 15. When it is determined that the vehicle is not stopped, that is, when it is determined that the vehicle speed is not 0, the process returns to step 101 to monitor whether the output from the mode switch 17 is on or off. When the vehicle is stopped, that is, when it is determined that the vehicle speed is zero, in step 105, it is monitored whether the output signal from the courtesy switch 16 at the driver's seat is on or off.

  In step 105, when the CPU 12 determines that the output signal from the courtesy switch 16 provided near the door 29 of the driver's seat 33 is turned off, the output signal from the mode switch 17 is the output signal from the half mode switch 40. If it is determined whether or not the output signal from the mode switch 17 is not the output signal from the half mode switch 40, the processing and operation in the flowchart shown in FIG. 7 are executed.

  In step 106, when the CPU 12 determines that the output signal from the courtesy switch 16 provided near the door 29 of the driver's seat 33 is OFF, the output signal from the mode switch 17 is the output signal from the half mode switch 40. If it is determined that the output signal from the mode switch 17 is an output signal from the half mode switch 40, the child lock 22 provided on the door 30 of the rear seat 34 of the driver seat 33 The door lock 26 is turned off (steps 107 and 108). In other words, a person who has driving qualifications (a person who is 18 years of age or older as of 2008) must be in the driver's seat 33. If such a driver is present, a rearview mirror (not shown) is compared with the child. And the left and right side mirrors, etc., based on the idea that the vehicle from the rear passing through the side of the vehicle should be confirmed, on condition that the door 29 of the driver seat 33 is opened. If the child lock 22 and the door lock 26 provided on the door of the rear seat 34 are unlocked, there is a high possibility that there is no vehicle from the rear passing through the side of the vehicle. Even if you go to, you are less likely to encounter an accident. Furthermore, it is possible to save the driver from having to cancel the child lock mode. In addition, when a passenger in the passenger seat 35 opens the door of the passenger seat 31 and determines whether or not the courtesy switch 16 provided in the vicinity thereof is turned off (step 109), and determines that it is turned off. The child lock 24 and the door lock 28 of the rear seat 36 of the passenger seat 35 may be unlocked (steps 110 and 111). This child lock function can be turned on by selecting the half mode switch 40 in the mode switch 17 when an adult is in the passenger seat 35 and a child is in the rear seat 36 of the passenger seat 35. It is effective, and it is provided so that the driver can appropriately select according to the person who gets on the vehicle.

  The processing and operation of the flowchart shown in FIG. 7 will be described. In step 106, when the CPU 12 determines that the output signal from the mode switch 17 is not the output signal of the half mode switch 40, the processing and operation of the flowchart shown in FIG. 7 is performed. It is determined whether or not the mode switch 17 is a full mode switch, and when it is determined that the output signal from the mode switch 17 is not the output signal of the full mode switch 39, the process returns to step 101 in the flowchart of FIG. 5 (step 101).

  In step 106, when the CPU 12 determines that the output signal from the mode switch 17 is a mode switch other than the output signal of the half mode switch 40, that is, the output signal of the full mode switch 39, the seat 34 other than the driver seat 33, The child locks 22, 23, 24 and the door locks 26, 27, 28 provided on the doors 35, 36 are all turned off (steps 112, 113). In other words, a person who qualifies for driving (a person who is 18 years of age or older as of 2008) must be in the driver's seat 33, and such a driver has a back (not shown) as compared to the child. On the condition that the door 29 of the driver's seat 33 is opened based on the idea that the vehicle from the rear passing through the left and right sides of the vehicle should be confirmed by mirrors and left and right side mirrors. If the child locks 22, 23, 24 provided on the doors of the seats 34, 35, 36 other than 33 and the door locks 26, 27, 28 are unlocked, the vehicle can be viewed from the rear passing through the left and right sides of the vehicle. Since there is a high possibility that the vehicle does not exist, even if the child goes out of the vehicle at this timing, it is less likely that the child will encounter an accident. Furthermore, it is possible to save the driver from having to cancel the child lock mode. In particular, unlike the case of using the half-mode function, when all persons riding in the passenger seat 35 and the rear seats 34 and 36 are children, the full-mode switch 39 in the mode switch 17 is selected and turned on. It is effective, and it is provided so that the driver can appropriately select according to the person who gets on the vehicle.

  In addition, the CPU 12 performs various interrupt controls. Flowchart after receiving ignition switch on signal as one of various interrupt controls Flowchart executed when ignition switch off signal is received during control of FIGS. 5 and 7 Control of mode switch off, mode switch off There is the control of the flowchart shown in FIG. 4 executed when the signal is received, or the control of the flowchart shown in FIG. 6 executed when the signal from the collision sensor 20 is received and it is judged that the vehicle collides with an object such as another vehicle or a building. These controls have higher priority than the controls in the flowcharts in FIGS.

  The control of the flowchart of FIG. 3 is a process after the ignition switch on signal is received. When the CPU 12 receives the ignition switch OFF signal in step 1114 during the control of FIG. 5 and FIG. Is finished (step 115).

  FIG. 4 is a flowchart after the ignition switch-on signal is received. When the CPU 12 receives the mode switch OFF signal in step 116 during the control of FIG. 5 and FIG. 23 and 24 are turned off (step 117).

  In the control of the flowchart in FIG. 6, after the ignition switch-on signal is received, the CPU 12 receives the signal from the collision sensor 20 in step 118 during the control in FIG. 5 and FIG. When the collision is determined, the CPU 12 turns off all the child locks 21 to 24 and all the door locks 25 to 28 (steps 119 and 120). With this function, the child lock function of the present invention can be released in an emergency such as a collision with another vehicle or a building to escape urgently.

  A second embodiment will be described. In the second embodiment, the basic operation is the same as in the first embodiment, but the CPU 12 determines whether a person or the like present in a seat other than the driver's seat 33 is a child, The child lock function is different. This function will be described in detail.

  The weight sensor 18 is provided in the passenger seat 35, the rear seat 34, and the rear seat 36 of the vehicle, and the weight sensor 18 is provided in the seat portion of the passenger seat 35, the rear seat 34, and the rear seat 36, respectively. If a person or the like exists, a signal corresponding to the weight is output to the CPU 12. The CPU 12 determines whether or not the person is a child based on the input signal corresponding to the weight from the weight sensor 18. When the mode switch 17 provided on the door 29 of the driver's seat 33 is turned on by the driver, the mode switch 17 outputs an on signal to the CPU 12. If there is a person or the like in the auxiliary seat X and the weight sensor 18 outputs a signal corresponding to the weight to the CPU 12, and the CPU 12 determines that the child is in the passenger seat 35 based on the signal, the implementation for the auxiliary seat 35 is performed. The child lock function similar to Example 1 is activated. That is, based on the signal from the weight sensor 18, when a person or the like existing in the passenger seat 35 is 10 kg or more and 40 kg or less, it is determined that there is a child, and the child locks 22, 23, 24 of the door of the auxiliary seat 35 are the drivers. Controls so as not to unlock unless the door 29 of the driver's seat 33 is opened. The CPU 12 executes the same control for the rear seat 34 and the rear seat 36 without being limited to the passenger seat 35.

It is a figure which shows the structure of a vehicle door locking / unlocking control apparatus. It is a figure which shows the structure of a vehicle. It is the flowchart which showed the control at the time of turning off after turning on an ignition switch. It is the flowchart which showed the control when a mode switch turns off after an ignition switch turns on. It is the flowchart which showed the child lock control after an ignition switch turns on. It is the flowchart which showed the control when a collision is detected after an ignition switch turns on. It is the flowchart which showed a part of child lock control in FIG.

Explanation of symbols

10 Vehicle door locking / unlocking control device 11 ROM
12 CPU
13 RAM
14 EEPROM
DESCRIPTION OF SYMBOLS 15 Vehicle speed sensor 16 Courtesy switch 17 Mode switch 18 Weight sensor 19 Ignition switch 20 Collision sensor 21-24 Child lock 25-28 Door lock 29-32 Door 33 Driver's seat 34 Rear seat 35 Passenger seat 36 Rear seat 37 Vehicle 38 Vehicle door locking・ Installation position of unlocking control device

Claims (5)

An electronic control device for unlocking a locked door of a vehicle,
A storage unit that stores information from a door opening / closing detection unit that detects opening / closing of a door of a front seat of the vehicle;
And a controller that unlocks the door lock of the rear seat when it is determined that the door of the front seat of the vehicle is opened based on the information stored in the storage unit. Electronic control device. An electronic control device for unlocking a locked door of a vehicle,
A storage unit that stores information from a door opening / closing detection unit that detects opening / closing of a door of a front seat of the vehicle;
When it is determined that the door of the front seat of the vehicle is opened based on the information stored in the storage unit, the key of the locked door of the rear seat located behind the front seat with the door opened An electronic control device comprising a control unit for unlocking. An electronic control device for unlocking a locked door of a vehicle,
A storage unit that stores information from a vehicle speed detection unit that detects a vehicle speed, and information from a door opening / closing detection unit that detects opening and closing of a door of a front seat of the vehicle;
A controller that unlocks the lock of the door locked on the rear seat when the vehicle is stopped and the door of the front seat of the vehicle is opened based on the information stored in the storage unit; An electronic control device characterized by that.   The electronic control apparatus according to claim 1, wherein the front seat is a driver's seat. A control method for unlocking a locked door of a vehicle,
When it is determined that the door of the front seat of the vehicle has been opened based on information from the door opening / closing detection unit that detects opening / closing of the door of the front seat of the vehicle, the door lock of the rear seat is unlocked. A control method characterized by:

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