KR940002622B1 - One touch power window for car - Google Patents

Abstract

The circuit turns off the driving power when the window motor is overloaded at the full open or close state of the window. It also pulls down the upwarding window when the alien substance like a human body is jammed. A microprocessor controlling the direction of a motor (M) rotation stops the motor if no input pulse per unit time is detected at the upper and lower limit positions of the window, and drives the motor in the reverse direction when the window is rising up and no input pulse per unit time is detected.

Description

Safety device for car one touch power window

1 is a schematic diagram of the present invention.

2 is a circuit diagram showing an input / output system of a microprocessor among the components of the present invention.

3 is a waveform diagram of FIG.

4 is a flow chart showing control execution of a microprocessor of the present invention.

* Explanation of symbols for the main parts of the drawings

2 pulse generating circuit 3 signal amplifier

4 filter micro-pro microprocessor

5: comparator CTRL: controller

IC1, IC2: Integrated circuit M: Motor

RY1, RY2: Up, down relay SW1, SW2: Up, down switch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window used in a motor vehicle. In particular, when a window is opened or closed by a one touch operation, the motor driving power is detected by detecting an overload state of the window motor when the window is completely opened or closed. It is related to the safety device of the one-touch power window for the vehicle made to ensure safety by making the vehicle shut down and when other objects (human body, etc.) are not raised during the ascending operation, the motor being raised is lowered.

In general, an automatic drive system using an electric motor to raise or lower a car's induction window is called a power window.It is necessary to immediately disconnect the motor driving power from the fully open or closed position of the window to deteriorate the switching circuit and damage the motor. Can be prevented.

In the related art, in order to stop driving a power window that opens and closes a door window of a vehicle, a separate switch or sensor is usually mounted on the door to restrict the driving.

For example, Japanese Utility Model Application Laid-Open No. 1-105188. This causes the driving of the electric motor of the power window to be forcedly stopped or reversed when more than a predetermined load is added to the window collar or the closed part of the window, but several closures occur and are not actually used. That is, another starter circuit is provided for the ruin and restart where unnecessary current flows continuously through the decompression switch due to the decrease in productivity and the increase in the number of labors required to install the pressure switch on the window collar or the window closure. There are many problems with lighting.

In addition, the automatic door attempts to stop the door by forming a large number of limit switches in the human body detection or in the correct position, but it is merely an inferior design having the same problem as described above for the automobile. Stabilizers for automatic doors of such buildings include the Japanese Utility Model Publication No. 63-94285 and the No. 64-14886.

On the other hand, in order to reduce the number of parts and wiring to be assembled in the automotive electronics, the motor is stopped by adding a reset circuit using a thyristor and a transistor by detecting an overload condition according to the motor stop at the opening and closing positions of the window. The proposed proposal has been presented. However, it has the advantage of protecting the switching circuit and motor, but if the human body or foreign object gets caught between the window and the door frame during the lifting operation, the risk of safety accident is very high. The slow speed causes a deterioration of parts, and the accumulation of deterioration due to repetition of use causes problems such as failure.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, if the motor is fully raised or lowered during the operation of raising or lowering the power window to quickly cut off the motor driving power according to the stop of the motor parts And to prevent the deterioration and burnout of the motor, and in the event of an accident that the human body or object is caught during the lifting, by driving the motor to lower the rising window to provide a safety device of excellent one-touch power window for automobiles There is a purpose.

Another object of the present invention is to provide a safety device for a one-touch power window for a vehicle in which the detection of a reverse drive in the event of a stop or a safety accident of the drive motor is not performed by a separate sensor or switch, thereby reducing unnecessary wiring and increasing productivity when installing a vehicle's electrical equipment. To provide.

In order to achieve the above object, the present invention provides a microprocessor incorporating a motor driving program and a pulse generating circuit and a motor driving circuit for transmitting a motor driving state to the microprocessor as a ripple generated by the motor driving.

Hereinafter, with reference to the accompanying drawings, the configuration of the present invention made to embody the above object will be described in detail.

As shown in FIG. 1, the present invention provides a window motor M driven by a battery B power source of an automobile, and up and down relays RY1 and RY2 and up and down switches for forward and reverse rotation of the motor. A window control device (CTRL) including a microprocessor that inputs and outputs SW1 and SW2, and the window control device (CTRL) receives the window motor (M) as an input of the up and down switches (SW1, SW2). The integrated circuit IC1 for the relay driver connected to the output terminals P1 and P2 of the microprocessor pro and controls the driving relays RY1 and RY2 is connected to the output terminals CT1 and CT2 of the integrated circuit IC1. The relays RY1 and RY2 are connected to each other, and the ground terminal of the motor M driven through the relay is connected to the pulse generating circuit 2 as the input terminal CT3, but the pulse generating circuit 2 is connected to the motor M. Die in the forward direction to the ground terminal to the secondary side of the signal amplification section 3 of the transformer (T) that amplifies only the ripple component generated during driving And the Schottky barrier diode (SBD) connected in parallel to the ground terminal in the opposite direction to connect the filter (4) consisting of the filter capacitor (C) and the resistor (R4), and the filtered signal. The output of the comparator IC3 is connected to the input terminal P3 of the micro-pro and connected to a comparator 5 having a comparator IC3 for shaping the wave into a square wave. -pro controls the reversal of the motor M, and stores the current position of the motor M as a square wave signal amplified by the ripple of the motor M. Is not inputted, the motor M is stopped, and if the signal is not detected for a predetermined time while the window is rising, the motor M is rotated in the window downward direction.

Next will be described in more detail the effects of the present invention as described above.

Referring to FIG. 4, the one-touch power window is raised or lowered by the one-touch power up or down switches SW1 and SW2 (step 101-104).

When the motor M is driven, a ripple component is present among the current components applied to the motor, and as shown in FIGS. 2 and 3, the ripple component flows through the primary side through the ground via the transformer T. It is amplified at the transformer secondary side of the amplifier 3 and output as a relatively irregularly distorted signal wave. In order to count the amplified signal wave in the micro-pro, the half wave is removed by the diode D of the filter unit 4, but the residual cathode potential is removed by the Schottky barrier diode (SBD). The cathode potential is completely excluded by the Schottky barrier diode (SBD) to remove high and negative voltage components, and the signal wave is bandpass filtered by the resistor (R4) and capacitor (C) and input to the inverting input terminal of the comparator (IC3). The signal wave compared with the reference voltage of the non-inverting input terminal is output from the comparator 5 as a stable square wave.

The output of this comparator 5 causes the micro-pro to detect motor drive as a pulse.

That is, the current position of the window is stored through the step (step 105) of checking whether the motor is being driven (step 106). When the pulse is not input, the window reaches the upper and lower limit points or the human body or the object during the ascension. The case of a non-elevable state over may be considered. Therefore, the micro-pro detects whether the pulse is not continuously input for the unit time (milliseconds) (step 107), and if the pulse input per unit time is not detected, does the window reach the upper limit or the lower limit? When the motor is stopped due to reaching the upper and lower limits through the step of detecting (step 108), the motor is stopped (step 111). However, when the upper and lower limits are not reached, that is, application during window rising (step 109) is raised. The motor is rotated in reverse to control the window to descend (step 110).

Therefore, if a human body or an object is caught between the window and the window frame during the ascending window, the rising window is immediately lowered to prevent damage to the human body and destruction of parts and motors due to compression.

As described above, the present invention determines the driving state of the motor through the ripple current component according to the driving of the motor and prevents the safety accident by lowering the rising window when the rising state is limited during the ascending state. In addition, since the driving state of the motor is detected by a ripple component without using a separate sensor or a switch, the wiring is greatly reduced in the installation of an electronic component of a compact vehicle, the installation and productivity are high, and at the same time, a pulse input per extremely short unit time is performed. By stopping the motor with or without it, the motor stop time is very fast, and it is a very excellent invention having various effects such as preventing deterioration of parts and motors.

Claims (3)

In a one-touch power window for a vehicle including a window motor driven by a battery power source of a vehicle and a microprocessor for inputting and outputting up, down relay, up and down switches, the window control device CTRL is used for the up and down switches. Integrated circuit IC1 for relay driver connected to the output terminals P1 and P2 of the micro-pro and controlling the relays RY1 and RY2 for driving the window motor M by input of (SW1, SW2). The relays RY1 and RY2 are connected to the output terminals CT1 and CT2 of the integrated circuit IC1, and the ground terminal of the motor M driven through the relay is connected to the pulse generating circuit 2 as the input terminal CT3. The pulse generating circuit 2 connects the filter portion 4 to the secondary side of the signal amplification portion 3 made of a transformer T which amplifies only the ripple component generated when the motor M is driven. Connected to a comparator 5 having a comparator IC3 for shaping the received signal wave into a square wave. The one-touch car safety devices for the power window, characterized in that formed by connecting the output of the comparator (IC3) to an input (P3) of the microprocessor (micro-pro). According to claim 1, wherein the micro-processor (micro-pro) controls the forward and reverse of the motor (M) but the signal of the square wave amplified the leaf of the motor to store the current position of the motor and pulses per unit time in the window, the lower limit A safety device for a power window for a vehicle, characterized in that the motor is stopped when there is no input, and when the window is rising, the motor is rotated in the downward direction of the window when there is no pulse input per unit time. 2. The filter unit (4) according to claim 1, wherein the filter unit (4) has a capacitor (C) connected in parallel with the resistor (R) to remove the high voltage and the negative voltage, and a short circuit connected backward between the ground terminal (D) and the ground terminal (D). Safety device for a power window for a vehicle, characterized in that the key barrier diode (SBD) is connected in parallel.