KR19990048287A - Operation alarm sound generating circuit of power window and its control method - Google Patents

Abstract

The present invention relates to a circuit and a control method for generating an operation warning sound before the window glass is activated by the selection of the window glass operating switch of the vehicle. The window glass operation warning sound generating device opens and closes the window motor which opens and closes the window glass of the door by being rotated forward and backward corresponding to the direction of the input current of the driving signal, and opens the window glass which is connected to the power supply voltage and located on the door of the vehicle. A pair of on / off switches for selectively generating a drive signal for closing, a sound generator for generating a warning sound in response to an input of a warning control signal, and a window glass driving (open / close) signal output from the pair of on / off switches And a sound generation controller for generating the warning control signal in response to a preset time, and a delay unit for delaying the window glass driving signal output from the pair of open / close switches for a predetermined time and supplying the motor to the motor. .

Description

Operation alarm sound generating circuit of power window and its control method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open / close control circuit of a power window glass of an automobile, and more particularly to a circuit and a control method for generating an operation warning sound before the window glass is activated by the selection of the window glass operating switch.

Currently, a method for opening and closing a vehicle window glass is to rotate a manual lever connected to a lifting gear of the window glass, and a method of driving and opening a lifting gear of the window glass by rotating a motor by operating a push button switch. Achieve. The latter method is commonly called power window glass.

The opening and closing of the power window glass is performed by opening or closing the window glass by rotating the motor forward (clockwise) or reverse (counterclockwise) by operating an up / down switch or a seesaw type push button switch. Consists of. That is, it is common that the switches are operated to reverse the polarity of the voltage applied to the motor.

The above switches for opening / closing the glass are installed on the handle area of each door in the vehicle to open and close the window glass of the corresponding door and the door area of the driver's door to control the opening and closing of the window glass. For main window switch.

However, the conventional power window device as described above is surprised when the passenger sitting in the seat is closed because the window glass of the door is closed or opened without any warning when the main window switch of the driver's seat is operated even when the passenger is in the rear seat. The phenomenon occurred.

For example, if a driver sitting in the back seat is leaning against an open window glass and the driver closes the rear window glass without warning, the person in the back seat is embarrassed.

Accordingly, an object of the present invention is to provide a circuit and a control method for generating an alarm message that the glass will be activated when the switch for driving the power window glass is operated in a vehicle having a power window device. .

Another object of the present invention is to provide a circuit and a method for pre-alarming the operating state of the power window glass by voice.

The present invention for achieving the above object is a window motor for opening and closing the window glass of the door by forward / reverse rotation corresponding to the direction of the input current of the drive signal, and a window glass connected to the power supply voltage located on the door of the vehicle A pair of on / off switches for selectively generating a drive signal for opening and closing the window, a sound generator for generating a warning sound in response to the input of the warning control signal, and window glass driving (for opening / closing) output from the pair of on / off switches And a sound generation controller for generating the warning control signal in response to a signal, and a delay unit for delaying the window glass driving signal output from the pair of open / close switches for a predetermined time and supplying the motor to the motor. It features.

1 is a circuit diagram of an operation beep generating circuit of a power window constructed in accordance with an embodiment of the present invention;

2 is a circuit diagram of an operation warning sound generating device of a power window constructed in accordance with another embodiment of the present invention;

3 is a flowchart illustrating an operation warning sound generation control flowchart of a power window according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

1 is a diagram illustrating an operation warning sound generation circuit diagram of a power window constructed according to an embodiment of the present invention. Referring to FIG. 1, a window motor 12 which rotates forward and backward in correspondence with a direction of an input current of a driving signal to open and close a window glass of a door, and a window glass connected to a power supply voltage to open and close a window glass located in a door of a vehicle A pair of open / close switches 14 for selectively generating a drive signal, a sound generator 16 for generating a warning sound in response to an input of a warning control signal, and a window glass drive (down / close) output from the pair of open / close switches 14 a sound generation controller 18 which generates the warning control signal for a predetermined time in response to a signal for [up], and a window glass driving signal output from the pair of open / close switches 14 for a predetermined time. It consists of the delay part 20 to supply.

Reference numeral 24, which is not described above, is a window open / close switch located on a door handle. The sound generation controller 18 is composed of an OR gate 22 and a timer 24, and the delay unit 20 is configured of a delay 21 and an analog switch 23.

Before the operation process of generating an operation warning sound of a power window configured according to an embodiment of the present invention in detail with reference to FIG. 1 described above, the opening and closing switches 14, 24 and analog in the circuit shown in FIG. The switches 23 are described on the assumption that they are all "off" when not driving the window glass.

Now, the driver in the driver's seat opens the window glass installed on the door of the assistant door or one of the left and right doors of the rear seat by operating the door opening / closing switch 14, which is the main power window switch located at the handle of the door panel. When closing, the battery's supply voltage is selected and output to one of two output lines, L1 and L2. For example, if you want to close the window glass, the power supply voltage of the up terminal of the switch is output to the line L1 (line L2 is ground), and if you want to open the window glass, the voltage of the down terminal of the switch is the line L2 (line L1). Is output to ground).

The power supply voltage output from the line L1 (or L2) is supplied to one electrode of the motor 12 through another window glass open / close switch 24. The power supply voltage supplied to one electrode of the motor 12 is outputted to another electrode through the winding coil in the motor 12, but the analog switch 23 connected between the other electrode and the switch of the glass open / close switch 24 is " off " The motor 12 is not rotated.

At this time, OR gate 22 having two input terminals connected to the lines L1 and L2 supplies a logic "high" signal to the timer 24 and the delay unit 20 connected to the output terminal by the voltage of the line L1. The timer 24 is triggered by the logic " high " of the OR gate 22 to output a logic " high " signal for a predetermined time period to operate the sound generator 16 connected to the output terminal.

Such a timer can be easily implemented using a monostable multivibrator or the like currently used in general purpose. The sound generator 16 reproduces a preset sound, such as a melody or a beep tone, through the speaker while the logic "high" signal is output from the timer 24 so that the window glass will be activated later. Warn the occupants.

On the other hand, the delay unit 21 in the delay unit 20 delays the logic " high " signal output from the OR gate 22 for a predetermined time and supplies it to the control terminal of the analog switch 23. At this time, the delay time of the delay unit 21 is delayed the output of the OR gate 22 for the same time as the time set in the timer 24 so that the analog switch 23 is driven "on" when the operation sound of the window glass is cut off from the speaker. It is set. The analog switch 23 is " on " driven when a logic " high " signal is output from the retarder 21 to connect the electrode of the motor 12 to the window glass switch 24.

Accordingly, the power supply voltage output from the line L1 of the main window glass opening / closing switch 14 starts to rotate by flowing to the ground through the one electrode and the other electrode of the door switch 24 and the motor 12 and the analog switch 23 connected thereto.

Therefore, the circuit configured as shown in FIG. 1 operates the main power switch installed in the driver's seat to switch to open or close the window glass located in a specific door. By listening, you can know in advance the operation of the window glass.

In FIG. 1, an example of generating a sound has been described. However, it should be noted that a person who understands the above description may generate a warning sound as a voice message instead of the sound.

For example, if the timer 24 shown in Fig. 1 is replaced with an address generator, and the sound generator 16 is replaced with a voice synthesizer having a memory storing voice data, the voice data stored in the memory by the output of the ORA gate 22 is replaced. It should be noted that the operation of the window can be spoken by voice synthesis, so that the present invention will be limited to the claims.

In addition, although FIG. 1 configured by the above embodiment has been described as being limited to hardware operation, it should be noted that the window glass may be opened and closed by searching for the output of the window open / close switch 14 to interrupt the voltage supplied to the motor 12. do.

That is, the OR gate 22 and the timer 24 delayer 21 among the components of the circuit shown in FIG. 1 may be replaced with the electronic control unit 100 as shown in FIG. 2, thereby producing the same result by a software method. Be aware of this. Here, the electronic control unit is a body control unit that controls the operation of the door of the vehicle, and includes a one-chip microprocessor.

3 is an operation control flowchart of the electronic control unit shown in FIG. 2.

Referring to Figures 2 and 3 briefly described the operation of another embodiment according to the present invention.

When the circuit configured as shown in FIG. 2 is operated, the electronic control unit 100 searches whether the level of the line L1 or L2 changes to a logic " high " In this state, when the driver operates the main window switch, that is, the window open / close switch 14, as described above, L1 or L2 goes high.

In this case, the electronic control unit 100 drives the sound generator 16 in step 104 to generate a window glass operation warning sound for notifying the occupants that the window glass will be operated after a predetermined time.

The electronic control unit 100 that has generated the window glass operation warning sound in step 104 drives " on " the analog switch 23 connected between the window glass open / close switch 24 and the motor 12 after a predetermined time in step 106 to perform the operation of the lines L1 and L2. The motor 12 is rotated by supplying a power supply voltage to the coil of the motor 12 and returns to step 102 described above.

As described above, when the driver returns the window glass opening / closing switch 14 while the motor 12 is being driven, the rotation of the motor 12 is stopped by switching the internal contacts to the initial position (OFF). At this time, all levels of the lines L1 and L2 become "low" and the electronic control unit 100 detects this in step 102 described above and initializes the analog switch 23 by "off" at 108 transient.

Therefore, in the case of a vehicle which opens and closes the operation of the window glass under the control of the microprocessor, the window glass operation warning sound can be generated by a simpler circuit configuration as shown in FIG. 2.

As described above, the present invention provides a glass operation warning sound for a predetermined time before the glass is operated when the glass opening / closing switch for opening and closing the window glass is operated for a predetermined time, thereby preventing the injury and surprise of the occupant due to the sudden closing of the window glass. You can prevent it.

Claims (6)

In the operation warning sound generation circuit of a power window provided with a window motor for opening and closing the window glass of the door by forward / reverse rotation corresponding to the direction of the input current of the drive signal, A pair of on / off switches connected to a power supply voltage for supplying a driving signal to the motor for opening and closing a window glass positioned at a door of the vehicle; A sound generator for generating a warning sound in response to the input of the warning control signal; A sound generation controller for generating the warning control signal for a preset time in response to the window glass driving signal output from the pair of on / off switches; And a delay unit configured to delay the window glass driving signal output from the pair of open / close switches for a predetermined time and supply the motor to the motor. The sound generation controller of claim 1, wherein the sound generation controller is configured to gate at least one of a timer generating a warning control signal for a predetermined time in response to a trigger signal, and a window glass closing and opening driving signal output from the pair of open / close switches. And a logic gate for providing a trigger signal to the timer, and a sound generator for generating a warning sound in response to the warning control signal. The address generator of claim 2, wherein the sound generation controller gates the address generator generating a preset address in response to a trigger signal, and at least one of a window glass close and a hot driving signal output from the pair of open / close switches. And a logic gate for triggering a generator, and a voice message output section for accessing and reproducing a voice guidance message stored in advance in response to the address signal. 4. The driving device according to claim 2 or 3, wherein the delay unit is an analog switch connected between a switch output of one of the pair of open / close switches and one of the electrodes of the motor, and a drive output from the logic gate. And a delayer for driving the analog switch by delaying a predetermined signal. The power window operation warning sound generating circuit according to claim 2, wherein the delay unit comprises a monostable multivibrator. In the method of generating the operation warning sound of the power window for opening and closing the window glass by driving a motor capable of forward and reverse rotation by operating the power window glass switch installed in the handle region of the door trim, Generating a window glass operation warning sound for a predetermined time in response to the switching of the power window switch; And delaying the motor driving signal generated by the switching of the power window switch for a predetermined time and supplying the motor to the motor.