KR20000039648A - Device for controlling power window of vehicle having function for preventing narrowly stuck accident - Google Patents

Abstract

PURPOSE: A device is provided to control a rising and a falling of a power window by generating a pulse according to a rotation of a window motor and a signal corresponding to a driving current of motor and by processing the signal to rise and to fall a window glass without a separated sensor. CONSTITUTION: When an initializing signal is inputted, a controller of rising(UDC) inside a micro controller(MC) outputs a reverse rotational control signal(DNS) of high level to an output port(P1). The reverse rotational control signal(DNS) is supplied into a coil(COL2) of a relay(RY2) by buffering with a buffer(B2). A common terminal(COM) of a relay point(RS2) is switched to a normal opened terminal(NO) by flowing a current to the coil(COL2) inside the relay(RY2). A voltage(VB) of a battery is flowed into a ground through the normal opened terminal(NO), a second terminal and a first terminal of a motor, the common terminal of relay(RY1), a normal closed terminal(NC) and a current to voltage converting resister(CVR). Thereby the motor(M) is rotated in a reverse rotational direction. When the motor(M) is rotated in the reverse rotational direction, a window glass is fallen and opened by operating a window regulator connected in a rotating shaft of the motor(M).

Description

Vehicle power window control device with stenosis prevention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling a power window of a vehicle, and in particular, when a window glass is raised while a part or an object of the human body is caught in a door window frame. Or it relates to a power window control device for protecting an object.

Most vehicles are equipped with a power window device for opening or closing the door window glass by the rotation of the motor. Such a power window device is configured to lower or open or close a window glass by changing a direction of a current supplied to a driving motor driving a window regulator, and this technique is already very well known in the art. It is well known.

However, such a power window is a factor that impairs safety because the window glass is closed or opened by the rotational force of the motor which is rotated forward or reverse by the up / down operation of the switch. It has been. For example, if the window glass is closed with a person's hand or head on the door window frame, a person in the rear seat of the vehicle may cause injury by applying the rotational force of the motor to the hand or head. do.

In order to eliminate the above problems, a conventional power window device is disclosed in Korean Patent Laid-Open Publication No. 97-659757 (a power window for a vehicle) by detecting an overload of a power window motor and temporarily rotating the window motor to lower the window glass. Safety device) and Korean Patent Publication No. 97-43988 (Power Window Safety Device) which detects the change in the ripple voltage generated when the window motor rotates and reversely rotates the window motor to prevent the window glass from rising. There is this. However, the above two prior arts simply lift the window glass by detecting the overcurrent of the motor or the state of the voltage supplied to the motor, so that it is required to be more precisely controlled.

In addition to these two prior arts, a sensor such as a contact switch or photocoupler is placed on the upper side of the door window frame to prevent stenosis injury caused by the rising of the window glass, and a separate sensor is attached to the window motor part. A method of detecting a signal proportional to rotation has been applied. However, this method has a problem in that the number of parts is increased by attaching a separate sensor to the door window frame and the window motor.

Accordingly, an object of the present invention is to safely raise and lower the power window glass by generating and processing a signal that is proportional to the driving current of the motor and a pulse according to the rotation of the window motor to raise and lower the window glass without using a separate sensor. In providing a device for controlling the.

Another object of the present invention is to provide an apparatus for safely controlling the lifting current of the power window glass as the starting current of the motor for raising or lowering the window glass and the rotation state of the motor.

Another object of the present invention is to provide a vehicle power window control apparatus using a motor rotation pulse generator for detecting a current pulsation of a frequency proportional to the rotational speed of a DC motor to generate a rotation pulse corresponding to the rotation of the motor.

The present invention for achieving the above object, the motor is rotated forward or reverse in accordance with the direction of the current input to the first and second terminals, and the window regulator for raising or lowering the window glass in response to the rotation of the motor A vehicle power window control apparatus comprising: a current path control circuit for switching a direction of current supplied to the first and second terminals in response to an input of a forward rotation control signal or a reverse rotation control signal, and the current path control; A current sensing sensor connected to the circuit and generating a voltage corresponding to the motor current flowing from the current to the circuit; and a rotation pulse corresponding to the pulsating voltage frequency which is changed in proportion to the rotational speed of the motor and output from the current sensing sensor. A rotation pulse generator for generating a current and a forward / reverse rotation control signal corresponding to an input of a rotation command; A peak current in the rotational direction and a current change ratio are detected from the output of the current sensor according to the lift controller supplied to the furnace control circuit and the forward / reverse rotation control signal, and their values are set in advance to the reference starting current and the reference change rate. Counting the rotation pulse in response to the sudden change of the period and the generation of the overcurrent detection signal by monitoring the rotation pulse period by counting a current detector for outputting an overcurrent detection signal when exceeded, and the rotation pulse output from the rotation pulse generator And a narrowing prevention controller for selectively generating a reverse rotation control signal for lowering the window glass according to a value.

1 is a schematic diagram of a vehicle power window control apparatus according to an embodiment of the present invention;

2A and 2B are flowcharts illustrating control of a stenosis accident prevention of a power window of a vehicle according to an exemplary embodiment of the present invention.

3 is a configuration diagram of a section pulse counter, a reference pulse counter, a starting current buffer, and a reverse starting current buffer set in the control unit shown in FIG. 1.

4 is a detailed circuit diagram of a window motor rotary pulse generator according to an embodiment of the present invention.

5A and 5B are waveform diagrams for explaining the operation of FIG. 4 and waveform diagrams for generating rotation pulses.

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 schematic diagram of a vehicle power window control apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral M is a motor that rotates in response to currents input to the first and second terminals, and has a function of driving the window regulator to raise or lower the window glass.

Reference numeral RYL is a current path control circuit for supplying the forward rotation drive voltage or the reverse rotation drive voltage to the first and second electrodes of the motor M in response to the input of the forward rotation control signal or the reverse rotation control signal. . The current path control circuit RYL includes a normal open terminal NO and a normal close at the other side of the power supply voltage V _B and the grounded current to voltage converting resister CVR. normal close) The terminal NC is connected and the common terminal COM is composed of two relays RY1 and RY2 connected to the first and second terminals of the motor M, respectively. The resistor CVR detects and outputs a voltage corresponding to a current flowing from the normal open terminal NO of the relay RY1 or RY2 to the ground side as a single resistor according to Ohm's law. . A buffer B3 is connected to the resistor CVR, and the output of the buffer B3 is changed in proportion to the number of revolutions of the motor M to detect a pulsation voltage frequency detected by the resistor CVR. A rotation pulse generator RPG for generating a corresponding rotation pulse is connected.

The reference symbol MC is a controller composed of a one-chip microcontroller, which outputs a forward rotation control signal or a reverse rotation control signal in response to a forward rotation command (UPS) and a reverse rotation command (DNS). After generating to and P1, it detects the current position and narrowing state of the window glass as the rotation sensing pulse and current sensing signal input to the input ports P2 and P3, and reverses in response to detecting the narrowing state. It has a function of generating a control signal. Lifting and supplying the forward rotation control signal or the reverse rotation control signal corresponding to the input command to the coils COL1 and COL2 of the relay RY1 or RY2 in the current path control circuit RYL in the controller MC. Inputs the output of the resistor CVR according to the controller UDC and the forward / reverse rotation control signal to detect the peak current and the rate of change of current in the rotational direction, and the values of the reference start current and the rate of change of reference are set in advance. A current detector (CDC) outputting an overcurrent detection signal when exceeded, and a rotation pulse output from the rotation pulse generator (RPG) and monitoring the rotation pulse period to respond to a drastic change in the period and generation of the overcurrent detection signal. And a narrowing prevention controller (JPC) for selectively generating a reverse rotation control signal for lowering the window glass according to the counting value of the rotation pulse. The configuration of the lift controller (UDC), the current detector (CDC) and the anti-stenosis controller (JPC) may be configured in hardware or software.

The controller MC according to an embodiment of the present invention is an example of using a microcontroller in the form of a single chip, and the lift controller (UDC), the current detector (CDC), and the anti-stenosis controller (JPC) illustrated in FIG. 1. Etc. will be described programmatically. In addition, the current detector CDC is operated by a forward / reverse control signal output from the lift controller UDC to convert an analog current sensing signal into a digital signal. (Hereinafter referred to as ADC).

2A and 2B are flowcharts illustrating a control method of preventing a narrowing accident of a power window of a vehicle according to an exemplary embodiment of the present invention, which is a program masked in a ROM region in the controller MC shown in FIG. 1.

3 is a configuration diagram of a section pulse counter, a reference pulse counter, a starting current buffer, and a reverse starting current buffer set in the control unit shown in FIG. 1. These are buffers located in the RAM in the controller MC shown in FIG. 1 and used by the current detector CDC and the anti-stenosis JPC. Here, the INT-CNT is a rotation sensing pulse counter, which has a function of counting up / down the rotation sensing pulse after being reset by an initialization operation. At this time, the mode of up / down is determined according to the forward rotation or reverse rotation control mode. The REF-CNT is a reference counter in which reference values are stored in advance, and information of the total number of pulses predetermined by the specifications of the mechanism when the window glass is moved from the bottom to the top of the window is stored. In addition, PRC and UPC are buffers for storing peak current values in the forward direction (forward rotation direction) and reverse peak current values for starting current in the reverse direction (reverse rotation direction).

Hereinafter, with reference to Figures 1 to 3 attached to the operation of the preferred embodiment of the present invention will be described in detail.

Now, when the circuit configured as shown in FIG. 1 is operated, the controller MC searches whether the initialization command is input in step 22 of FIG. 3A. At this time, the reset command is performed by the user selecting a reset button (not shown). The reason for performing the initialization operation is to put down the window glass to the bottom of the initial operation, and set the value of the rotation detection pulse counter (INT-CNT) set as shown in FIG. 4 to an initial value (for example, a value of 0). To do this.

When it is determined that the initialization command is input in step 22 of FIG. 3A, the lifting controller UDC in the controller MC outputs the high level reverse rotation control signal DNS to the output port P1 in step 24 of FIG. 3A. do. The reverse rotation control signal DNS is buffered by the buffer B2 and supplied to the coil COL2 of the relay RY2. At this time, a current flows through the coil COL2 in the relay RY2 and the common terminal COM of the relay contact RS2 is switched to the normal open terminal NO. Therefore, the voltage V _B of the battery is normally open terminal N0 of the relay RY2, the second terminal and the first terminal of the motor M, the common terminal COM and the normal cross terminal of the relay RY1. It flows to the ground side through (NC) and the current detection resistor (CVR). By the current supply in this direction, the motor M is rotated in the reverse rotation direction CCW.

When the motor M is rotated in the reverse rotation direction CCW, the window glass is lowered and opened by the operation of a window regulator (not shown) connected to the rotation shaft of the motor M. When the motor M is rotated by the above-described operation, the current-voltage conversion resistor CVR whose one side is connected to the normal open terminal NO of the relays RY1 and RY2 is connected to the motor M through the motor M. FIG. The amount of current flowing is sensed and the corresponding voltage is supplied to the ADC in the current detector (CDC). As described above, when the motor M is rotated by the supply of the DC voltage, the current pulsation of the frequency proportional to the number of revolutions of the motor M exists because the current of the rotor coil is alternated through a brush in accordance with the operating principle of the DC motor. Will be done. Such a current pulsation is detected by the resistor CVR and supplied to the rotation pulse generator RPG through the buffer B3. At this time, the rotation pulse generator (RPG) detects the pulsation frequency of the voltage corresponding to the current amount by the resistance (CVR) and the rotation pulse proportional to the rotation of the motor (M) input port (P2) of the controller (MC) To supply. The relationship in which the rotation pulse generator RPG generates a rotation pulse proportional to the rotation of the motor M will be more clearly understood by the operation of FIG. 4 to be described later.

The lifting controller UDC in the controller MC reads the rotation pulse through the input port P2, and the current detector CDC receives a current sensing signal input through the resistor CV by the internal ADC. The peak current with the largest double value is detected by reading and converting to. In addition, the current detector CDC stores the detected peak current PRC in a buffer set in the memory as shown in FIG. 3. The anti-stenosis controller JPC in the controller MC reads the output of the rotation pulse generator RPG in step 28 and repeats the above steps 24 and 26 until there is no input of the rotation sensing pulse.

If it is determined that there is no input of the rotation detection pulse, the anti-stenosis controller (JPC) determines that the window glass is lowered to the lowest position, and outputs the forward rotation control signal UP through the lift controller (UDC) in step 30. Output to port (P0). At this time, the output time of the forward rotation control signal output in step 30 is the output of the rotation pulse generator (RPG) N (where N is the amount of movement of the window due to the amount of rotation of the motor (M) is not easily visually recognized , The minimum number of pulses that the controller MC can easily determine the rotation. In addition, the current detector CDC in the controller MC detects a peak value UPC of the reverse starting current input through the current detection resistor CVR through the ADC and stores the peak value UPC in the memory of FIG. 3.

At this time, the stenosis preventer JPC compares the values of the peak current PRC and the reverse peak current UPC in the advancing direction in step 34. As a result of the comparison of step 34, the peak current PRC in the advancing direction is close to the reverse peak current UPC (determined to be close when the error is within 10% considering the measurement error and the rate of change of voltage). When it is determined that the state of restraint current is recognized, the rotation control signal is blocked in step 38 and the values of the rotation sensing pulse counters INT-CNT, PRC, and UPC are initialized. That is, when the peak current PRC in the advancing direction is close to the reverse peak current UPC, step 38 is performed that the window glass has reached the lowest position. If the peak current PRC in the advancing direction is not close to the reverse peak current UPC in step 34, the above operation is repeated by searching whether N outputs of the rotation pulse generator RPG are input, and N is exceeded. If so, proceed to step 38 immediately. By the initialization operation (restraining current checking operation), the value of the rotation sensing pulse counter INT-CNT, which is a counter for controlling the position of the motor M, is set to 0 in the state where the window glass is completely lowered.

If it is determined in step 22 that the initialization command is not input or the controller MC performs the process 38, the controller 40 performs the forward rotation command UPS or the reverse rotation command for raising or lowering the window glass. Check if DNS) is entered. If no command is input as a result of the search in step 40, the process returns to step 22 to search whether a command from the outside is input.

However, as a result of the search in step 40, when the user selects the automatic up switch S1 to raise the window glass, the elevation controller UDC in the controller MC responds to the high level forward rotation. The control signal UPS is output to the output port P0 in step 42. The high level forward rotation control signal UPS output from the output port P0 is buffered by the buffer B1 and supplied to the coil COL1 of the relay RY1 in the current path control circuit RRY. At this time, since the relay RY1 switches the common terminal COM of the contact RS1 from the normal cross terminal NC to the normal open terminal NO, the battery voltage V _B is the normal open terminal of the relay RY1. (NO) and common terminal (COM), the first terminal and the second terminal of the motor (M), the common terminal (COM) of the relay (RY2), the normal cross terminal (NC) and the resistance (CVR) to flow to the ground do. That is, current flows in the forward direction CW to the motor M, and the motor M rotates forward.

When the motor M is rotated forward by the above operation, the rotation pulse generator RPG detects the ripple signal of the voltage detected by the resistor CVR according to the rotation of the motor M and detects the corresponding rotation. The pulse is supplied to the anti-stenosis controller JPC in the controller MC. At this time, the anti-stenosis controller (JPC) that outputs the forward drive signal up counts the rotation detection pulse using the rotation detection pulse counter (INT-CNT) as shown in FIG. In step 46, it is checked whether the period T of the rotation sensing pulse is changed. If there is no change in the period T of the rotation sensing pulse in the searching process, the process is repeated until the period is changed.

When the motor M is continuously rotated so that the window glass is closed to the final position of the window frame or the window glass is not lifted by a human body or other object fitted to the window frame, the rotation of the motor M suddenly slows down, and thus the rotation sensing pulse The period T of becomes shorter. At this time, the current detector (CDC) in the controller (MC) converts the current detection signal input to the input port (P3) to digital to detect the peak current (PRC) of the traveling direction during the output of the resistor (CVR) Figure 3 Store in a buffer prepared as follows.

On the other hand, the anti-stenosis controller (JPC) of the reference counter (REF-CNT) that stores the value counted by the rotation detection pulse counter (INT-CNT) and the value preset by the specification of the mechanism in the process 50 of Figure 3B Compare the values to detect the current position of the window glass. That is, if the value of the rotation detection pulse counter INT-CNT and the value of the reference counter REF-CNT are not substantially the same, the stenosis prevention controller JPC performs N cycles in 52 to detect a stenosis. Outputs a reverse rotation control signal (DNS), the current detector (CDC) converts the analog current sensing signal input through the resistor (CVR) to digital to detect the reverse peak current UPC and memory as shown in FIG. Store in the buffer provided in.

At this time, the anti-stenosis controller JPC compares the value of the reverse peak current UPC stored in the memory with the peak current PRC in the advancing direction in step 54. As a result of the comparison, if the value of the peak current PRC in the advancing direction is not greater than the value of the reverse peak current UPC, it is determined that it is not narrowed, and a forward rotation command is supplied to repeat the operation in step 42 described above. If the value of the peak current PRC is detected to be greater than the value of the reverse peak current UPC in step 54, the anti-stenosis controller JPC determines that it is a narrowing and supplies the reverse rotation command DNS for a predetermined time. . This principle is because when the stenosis is made on the window frame, the rotation speed of the motor M is sharply dropped, and the current through the motor M is larger than the starting current in the opposite direction. The window glass is lowered by allowing the motor M to continue to be driven in the direction of reverse rotation CCW by the reverse control signal output from the output port P1 of the lifting controller UDC. Therefore, when the narrowing occurs, the raised window glass is automatically lowered to protect the human body or the object inserted on the window frame.

On the other hand, if the value stored in the rotation detection pulse counter (INT-CNT) and the value of the reference counter (REF-CNT) in the above 50 process is almost the same (for example, within an error range within 10%), the anti-stenosis controller ( JPC determines that the window glass has almost reached its final position, and checks in step 58 whether there is no change in the output of the rotation pulse generator RPG during 2T (where T is the period of the rotation sensing pulse).

In step 58, if there is no input of the rotation sensing pulse during the 2T period, the lift controller UDC outputs the high level reverse rotation control signal DNS to the output port P1 during the N rotation sensing pulses in step 60. Supply current sense command to current detector (CDC). At this time, the current path controller RYL rotates the motor M in the direction of the reverse rotation CCW by the input of the high level reverse rotation control signal DNS. At this time, the current detector (CDC) detects the peak current value of the current value detected through the resistance (CVR) to the value of the reverse rotation starting current flowing through the motor M is rotated in the reverse direction and stored in the buffer as shown in FIG. . At this time, the elevating controller (UDC) compares the peak current value (PRC) in the travel direction and the reverse peak current value (UPC) stored in the internal buffer so that the peak current value (PRC) in the travel direction is equal to the reverse peak current value (UPC). When it is determined to be close, it is determined that the state of restraint current, and in step 66, the driving signal of the motor M is blocked to stop the ascending operation. If the two current values are not substantially similar in step 62, the process is terminated by performing step 66 after a predetermined time delay in step 64. Therefore, the window raising operation is automatically stopped when the state where the window glass is raised to the predetermined position by the mechanism specification by the raising operation of the motor M is automatically detected.

If the command input in step 40 is a command to lower the window glass, the anti-stenosis controller JPC supplies the high level reverse rotation control signal DNS to the output port P1 in step 45. The motor M is rotated in the direction of reverse rotation CCW. In operation 47, the rotation detection pulse output from the rotation pulse generator RPG generated during the reverse rotation is input, and the rotation detection pulse counter INT-CNT is counted down. In step 68, the reverse rotation stall current check mode is executed. Here, the reverse rotational restraint current checking mode is the same as the above-described processes 26 to 32. The lift controller UDC obtained the peak current PRC and the reverse rotation peak current UPC in the process 68 is that the peak current PRC in the process direction is close to the reverse peak current UPC in 70. If it is determined that the window glass is lowered to the lowest position, and in step 72 it cuts the drive signal output to the motor (M) side. Accordingly, it can be seen that after detecting the time when the motor M is not rotated, the state of the restraint current is checked and controlled.

4 is a detailed circuit diagram of the window motor rotation pulse generator according to an embodiment of the present invention. Referring to FIG. 4, a pulsating voltage having a frequency proportional to the rotational speed of the motor M is input from the resistor CVR through the buffer B3 to block a DC component signal and only a ripple component signal. A high pass filter (HPF) 11 for filtering, an amplifier 13 for amplifying the output of the HPF 11 to a signal of a predetermined level, and a frequency band of the amplified ripple signal to pass noise A first low pass filter (LPF1) 15 for removing the back and the like, a second low pass filter (LPF2) 17 for detecting a pulsating signal component having a frequency band lower than that of the ripple signal, and the LPF1 ( 15) and amplifies the difference between the ripple signal output from the LPF2 (17) and the pulsation signal of a lower frequency band than the differential amplifier 19 and the output of the differential amplifier 19 to generate a pulse signal It is comprised including the Schmitt circuit 23 which outputs. Reference numeral 21 not described in FIG. 4 is a band pass filter (BPF). The BPF 21 is used to filter out noise in an unwanted frequency band and filters only the signal band.

5A and 5B show the output of the current detecting resistor CVR and the output waveform of the rotating pulse generator RPG. An operation of the rotation pulse generator RPG configured as shown in FIG. 4 will be described with reference to FIGS. 5A and 5B.

When the motor M is rotated and a current pulsation corresponding thereto is generated, it is detected by the current detecting resistor CVR as shown in FIG. 5A to the HPF 11 in the rotation pulse generator RPG through the buffer B3. Is entered. The HPF 11 cuts off the DC component of the DC current flowing through the motor M and supplies only the ripple signal of the AC component to the amplifier 13. Therefore, the HPF 11 should be designed to pass a frequency component of the ripple signal band and cut off a frequency of a lower frequency band.

The amplifier 13 amplifies the input fine ripple signal into a signal of a predetermined level and supplies it to the LPF1 15 and the LPF2 17 connected to the output node, respectively. The LPF1 15 has a cutoff frequency designed to pass a frequency band of the ripple signal and block more frequency signals to remove unwanted waves of noise. In addition, the LPF2 17 has a lower frequency than the ripple signal so as to pass a frequency in a band 1/10 to 1/15 times the desired frequency in order to detect only a ripple signal proportional to the rotational speed of the desired motor M. Only the ripple signal of low pass filtering is output.

The differential amplifier 19 having the non-inverting terminal (+) and the inverting terminal (-) connected to the output node of the LPF1 (15) and the LPF2 (17) amplifies the difference between the ripple signal and the lower ripple signal having a lower frequency than this. Generate and output the ripple signal according to the rotation of the motor (M). At this time, the BPF 21 connected to the differential amplifier 19 band-passes the input signal and supplies the ripple signal of the desired frequency band to the Schmitt circuit 23. Here, the reason for using the BPF 21 is to remove the signal of the unwanted frequency component in the signal output from the differential amplifier 19.

As described above, the Schmitt circuit 23 for inputting the differentially amplified ripple signal is different from the differential amplifier 19, as the trigger level on the rise and the trigger level on the fall are set differently. The output ripple signal is waveform-shaped to generate rotation pulses of the motor M as shown in FIG. 5B.

As described above, the present invention temporarily narrows the motor by rotating the motor temporarily in the opposite direction to be controlled in a system configured as sensors and controllers for monitoring the peak current flowing through the motor and the rotational direction and the number of revolutions of the motor for elevating the window glass. Alternatively, by controlling the operation of the window glass by determining the end position of the control direction, the control of the power window glass can be made more secure, and damage to a human body or an object can be eliminated.

Claims (4)

In a vehicle power window control apparatus having a motor that is rotated forward or reverse in accordance with the direction of the current input to the first and second terminals, and a window regulator for raising or lowering the window glass in response to the rotation of the motor, A current path control circuit for switching the direction of current supplied to the first and second terminals in response to the input of the forward rotation control signal or the reverse rotation control signal; A current sensing sensor connected to the current path control circuit and generating a voltage corresponding to the motor current flowing from the current path control circuit; A rotation pulse generator which is changed in proportion to the rotation speed of the motor and detects a pulsation voltage frequency output from the current sensor and generates a rotation pulse corresponding thereto; A lift controller for supplying a forward / reverse rotation control signal corresponding to an input of a rotation command to the current path control circuit; The current detector detects the peak current in the rotation direction and the current change ratio from the output of the current sensor according to the forward / reverse rotation control signal and outputs an overcurrent detection signal when their values exceed a preset reference starting current and reference change rate. Wow, Counter rotation control which counts the rotation pulse output from the rotation pulse generator and monitors the rotation pulse period to lower the window glass according to the counting value of the rotation pulse in response to the rapid change of the period and the generation of the overcurrent detection signal. And a narrowing prevention controller for selectively generating a signal. According to claim 1, wherein the current sensor is a vehicle power window control device, characterized in that the resistance to convert the current flowing in the motor to a voltage output. The high frequency filter of claim 2, wherein the rotary pulse generator comprises: a high pass filter for filtering and outputting only a ripple signal of a pulsating voltage output from both ends of the resistor; An amplifier for amplifying the high pass filtered ripple signal into a signal of a positive level; A first low pass filter for removing noise by passing only the frequency band of the amplified ripple signal, and a second low pass filter for detecting a pulsating signal component having a frequency band lower than that of the ripple signal; A differential amplifier for amplifying and outputting a difference between a ripple signal output from each of the first and second low pass filters and a pulsation signal of a lower frequency band; And a schmitt circuit configured to waveform the output of the differential amplifier and supply the waveform to the stenosis prevention controller. 4. The vehicle power window control apparatus according to claim 3, wherein a band pass filter is further connected between the differential amplifier and the schmitt circuit to output only a ripple signal of a desired frequency band.