JPH0586769A - Power window control device - Google Patents

Abstract

PURPOSE:To eliminate the wiring among doors and to simplify the circuit arrangement. CONSTITUTION:A first pulse generator 7 switchingly delivers pulse signals having a first and a second duty cycle in accordance with an ascent or descent instruction signal from a first switch 6, and an integrating circuit 10 integrates the pulse signal. A voltage comparing circuit 11 derives an ascending drive signal when an output signal from the integrating circuit 10 falls in a first range A, and delivers a descent drive signal when it falls in a second range B, and a drive circuit 13 drives a window motor 15 in the window ascending direction in response to the ascent drive signal but in the window descending direction in response to the descent drive signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window control device used for controlling a wind motor for driving a wind glass in a power window device for automatically raising and lowering the wind glass of an automobile.

[0002]

2. Description of the Related Art FIG. 9 exemplifies a power window controller for controlling a window motor for driving a window glass in a power window device.

The illustrated power window device 50 uses a multiplex communication system and has a driver side door 70.
In addition, a main unit 54 including an operation switch 51 which is a main switch, a transmission circuit 52, and a lock switch 53 is provided.

Further, the passenger side door 80 is provided with an operation switch 55 which is a sub switch, and a receiving circuit 56, a priority judging circuit 57, a prohibiting circuit 58 and a driving circuit 59.
And a window motor 61 connected to a window glass (not shown) is connected to the drive circuit 59, and the operation switch 55 (sub switch) is connected to each rear seat door (not shown). A combination of the receiving unit 60 and the wind motor 61 is arranged respectively.

The operation switch 51 of the main unit 54 provided on the driver's side door 70 raises the window glass.
A command signal for lowering is given to the transmission circuit 52, and the lock switch 5 of the main unit 54 is
When the switch 3 is in the lock-off state, the operation switch 51
The transmission circuit 52 which receives the command signal for ascending / descending by operating the window ascending side and the window descending side transfers the command signal through the signal line 62 extending from the driver side door 70 to the passenger side door 80. Then, the receiving circuit 56 receives the signal.

The command signal received by the receiving circuit 56 judges whether or not there is another command signal to be prioritized with respect to the command signal received by the receiving circuit 56 in the priority judging circuit 57 and prohibits the command signal to be prioritized. Then, the prohibition circuit 58 determines whether or not there is an operation stop command signal. If it is determined that there is no operation stop command signal, the up / down command signal is transferred to the drive circuit 59.

The drive circuit 59 supplies the forward / reverse power to the window motor 61 by the transferred up / down command signal, so that the window motor 61 is rotated in the forward / reverse direction to rotate the window glass. To move up and down.

The operation switch 55 provided on the passenger side door 80 is adapted to give a command signal for raising and lowering the window glass to the priority judging circuit 57, and the lock switch 53 of the main unit 54. In the lock-off state, by operating the operation switch 51 of the passenger side door 80 to the window ascending side / window descending side, the priority determination circuit 57 receives the ascending / descending command signal, and another priority command signal is given priority. It is determined whether or not there is any, and the command signal having the priority is transferred to the inhibition circuit 58, and
At 8 it is determined whether there is an operation stop command signal. If it is determined that there is no operation stop command signal, the up / down command signal is transferred to the drive circuit 59.

Then, the driving circuit 59 transfers the transferred rising
Since the forward / reverse power is supplied to the wind motor 61 by the descending command signal, the wind motor 61 is driven in the forward direction.
The windshield is rotated in the opposite direction to operate the window glass in the ascending side and the descending side.

Here, the lock switch 53 of the main unit 54 provided on the driver's seat side door 70 is adapted to give an operation stop command signal, and is extended from the driver's seat side door 70 to the passenger's seat side door 80. The signal line 63 is connected to the prohibiting circuit 58 of the receiving unit 60 provided on the passenger side door 80.

When the lock switch 53 is in the lock-on state, in order to cancel the ascending / descending command signal transferred to the inhibition circuit 58 of the receiving unit 60,
The up / down command signals from the operation switch 51 (main switch) provided on the driver's side door 70 are also sent to the passenger's side door 8
Since the up / down command signal from the operation switch 55 (sub switch) provided in 0 is not received and the drive circuit 59 is not operated, the window motor 61 does not operate.

When the lock switch 53 is in the lock-off state, the operation switch 51 (main switch) of the driver side door 70 and the operation switch 55 (sub switch) of the passenger side door 80 are different from each other. When the command signal of the above is simultaneously transferred to the priority determination circuit 57, the priority determination circuit 57 operates the operation switch 55 of the passenger side door 80 provided with the priority determination circuit 57 which is the operation switch closest to the priority determination circuit 57. Since the logic is incorporated so as to give priority, the command signal from the operation switch 51 of the driver side door 70 is ignored and the drive circuit 59 moves up and down according to the command signal from the operation switch 55 of the passenger side door 80. Command signal is transferred to drive circuit 5
9 supplies the forward / reverse power to the wind motor 61 by the transferred up / down command signal, thereby rotating the wind motor 61 in the forward / reverse direction to raise the window glass. Operate on the descending side.

However, in the above-mentioned conventional power window control device 50, the driver side door 70 to the passenger side door 8 are connected.
Between 0, two lines, a signal line 62 for transferring an up / down command signal from the operation switch 51, which is a main switch, and a signal line 63 for transferring an operation stop command signal from the lock switch 53. Since the signal line of No. 2 is provided, there is a problem that it is difficult to omit the wiring because many wirings are required. Further, the operation switch 51 of the driver side door 70 and the operation switch 5 of the passenger side door 80
5, the command signals on different sides are transferred to the receiving unit 60 in a state where they are not discriminated from each other. Therefore, after the discrimination is performed by providing the priority determination circuit 57 for performing the priority determination, the drive circuit There is a problem in that the power supply direction from 59 is determined, and the receiving unit 60 assembled to the passenger side door 80 and each rear seat door has a complicated circuit configuration.

[0014]

The problem to be solved is that between the main unit and the receiving unit,
If the command signal from the operation switch of the main unit and the operation stop command signal from the lock switch are transferred to the receiving unit by separate signal lines, a large amount of signal lines are required, and the command signal from the operation switch of the main unit and the sub switch If the command signal from the operation switch is transferred in a state in which the priority determination is not performed, it is necessary to provide the receiving unit with means for performing the priority determination, which complicates the circuit configuration.

[0015]

The power window control device according to the present invention is a command for raising and lowering the window glass in order to reduce the amount of signal lines as much as possible and not to complicate the circuit configuration. A first switch for providing a signal and a pulse signal of a predetermined frequency, the pulse signal being switched to a first duty cycle by a rising command signal and being switched to a second duty cycle by a falling command signal. A pulse generator,
An integrating circuit that integrates the pulse signal, and a voltage comparing circuit that generates a rising drive signal when the output voltage of the integrating circuit is in the first range and a falling drive signal when the output voltage is in the second range. The main feature is that a drive circuit for driving the window motor to the upward movement side of the window glass by the upward drive signal and driving the window motor to the downward movement side of the window glass by the downward drive signal is provided. In a more preferred embodiment, a second switch that gives a command signal for raising, lowering, and stopping operation of the window glass, and a pulse signal having a predetermined frequency are generated, and a first duty cycle is generated by the raising command signal of the second switch. To the second duty cycle by the down command signal and switched to the low level by the operation prohibition signal. A second pulse generator Waru,
The outputs of the first and second pulse generators are open collector circuits of transistors, and the output signal lines of the first and second pulse generators are connected by wired OR. In a further preferred embodiment, the pulse detection circuit detects that a pulse signal is generated, and when the pulse detection circuit detects a pulse, the output voltage of the integration circuit rises when the output voltage is out of the second range. The present invention is characterized by having a configuration that includes a signal determination circuit that generates a drive signal, and the above-described configuration has achieved the object of saving wiring and achieving a simple circuit configuration.

[0016]

In the power window controller according to the present invention, the rising / falling command signal from the switch is switched by the pulse generator as a pulse signal having a duty cycle for the rising / falling signal and transferred to the integrating circuit, Since the pulse signal is integrated by the integrator circuit and the rising drive signal / falling drive signal is determined by the voltage comparison circuit, the pulse signal transferred to the integrator circuit is determined to be the up / down command Transfer done, second
The rising / falling / stopping operation from the switch is switched by the second pulse generator as a pulse having a duty cycle for rising / falling signal and transferred to the integrating circuit, and the integrating circuit integrates the pulse signal. Since the voltage comparison circuit determines the rising drive signal and the falling drive signal, the command signal can be arbitrarily set by selecting the duty cycle of the pulse by the voltage comparison circuit, and the first and second pulse generators can be set. The output of is a transistor open collector circuit and the output signal lines of the first and second pulse generators are connected by a wired OR. Therefore, the output signal line for carrying the command signal to be transferred to the integrating circuit is a single output signal line. Only one is required, the pulse detection circuit detects the generation of the pulse signal, and the signal determination circuit based on the detected pulse signal. Since the output voltage of more integration circuit for generating a rising drive signal when located outside the second range, and more set conditions for generating the increasing driving signals.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the power window control device according to the present invention will be described below with reference to FIGS.

That is, the illustrated power window control device 1 is a main switch for the driver side door 70, which is an operation switch 2 for giving rise / fall command signals and a lock switch 3 for giving an operation stop command signal. The second
There is a main unit 5 connected to the pulse generator 4 of FIG.

Further, the passenger side door 80 is provided with a switch unit 8 in which an operation switch 6 which is a sub switch for giving rise / fall command signals is connected to the first pulse generator 7, and the main unit is also provided. Second of unit 5
Of the pulse generator 4 and the first pulse generator 7 of the switch unit 8 and a receiving circuit 12 composed of a voltage comparing circuit 11 connected to a data line 10a included in the integrating circuit 10 for receiving a signal from the first pulse generator 7. And the rising-side signal line 11a and the falling-side signal line 1 provided in the voltage comparison circuit 11.
Receiving unit 14 with drive circuit 13 connected to 1b
And a window motor 15 connected to a window glass (not shown) is connected to the drive circuit 13, and a combination of the switch unit 8, the receiving unit 14, and the window motor 15 is provided on each rear seat door (not shown). It is designed to be installed.

The main unit 5 is, as shown in FIG.
The oscillation circuit 4a provided in the second pulse generator 4 is connected to the normally open fixed contacts 2b and 2c of the operation switch 2 in which the movable contact 2a is connected to the ground, and the bias resistor R1.
Output transistor Tr1 forming an output circuit connected to
Is connected to the base resistance R2 of the output transistor T
The normally open fixed contact 3b of the lock switch 3 having the movable contact 3a connected to the ground and the output terminal 5a are connected to the collector of r1.

When the operation switch 2 (main switch) is switched to the up side and the rising command signal is transferred, the second pulse generator 4 responds to a predetermined cycle T as shown in FIG. When the pulse signal having the first duty cycle of T / 8 duty is output from the output terminal 5a and the operation switch 4 (main switch) is switched to the down side and the descending command signal is transferred, it is shown in FIG. As described above, a pulse signal having a second duty cycle of 3 / 8T duty with respect to the cycle T is output from the output terminal 5a, and the lock switch 3 is switched to the switch-on (lock-on) state to stop the operation command signal. Is transferred, the output from the output terminal 5a is switched to a fixed low level.

Further, in the switch unit 8, the output terminal 8a is connected to the collector of the output transistor Tr2 constituting the output circuit connected in the same manner as the main unit 5. The first pulse generator 7 is an operation switch 6
When the (sub switch) is switched to the up side and the rising command signal is transferred, a pulse signal having a first duty cycle of T / 8 duty is output from the output terminal 8a as shown in FIG. When the operation switch 6 (sub switch) is switched to the down side and the descending command signal is transferred, a pulse signal having a second duty cycle of 3 / 8T duty is output from the output terminal 8a.

Then, the receiving circuit 12 of the receiving unit 14
Has a power supply Vcc connected to the input terminal 12a via a pull-up resistor R3 and an integrating circuit 10 connected via an inverter INV.

The output terminal 5a of the main unit 5 provided on the driver's side door 70 is the input terminal 12 provided on the receiving circuit 12 of the receiving unit 14 provided on the passenger side door 80.
a is connected by a wired OR with a single output signal line 9, and the output terminal 8a of the switch unit 8 also provided on the passenger side door 80 is connected to the output signal line 9 at the passenger side door 80. Yes, the second pulse generator 4
And the output of the first pulse generator 7 are an open collector circuit of the output transistors Tr1 and Tr2.

On the other hand, the integrating circuit 10 provided in the receiving circuit 12 of the receiving unit 14 receives the first pulse signal from the second pulse generator 4 and the first pulse generator 7 input via the output signal line 9.
The pulse signals having the duty cycle of 1 and the second duty cycle are integrated, and the integrated voltage waveform is transferred to the voltage comparison circuit 11, as shown in FIG.

Then, in the voltage comparison circuit 11, the output voltage value VI of the voltage waveform is compared with the preset threshold levels Vth1 and Vth2, and as shown in FIG. Range A (up region) and second range B (down region) are determined, a rising drive signal is transferred to the drive circuit 13 when in the first range A, and when in the second range B. Then, the descending drive signal is transferred to the drive circuit 13.

The drive circuit 13 to which the ascending drive signal and the descending drive signal have been transferred has the first range A and the second range B.
Since the forward and backward motor powers corresponding to the above are supplied to the window motor 15, the window motor 15 is rotated in the forward and reverse directions.

As shown in FIG. 4, the voltage comparison circuit 11 further includes a pulse signal (a rising command) having a first duty cycle from the second pulse generator 4 of the main unit 5 and a second pulse signal of the switch unit 8. When a pulse signal (increase command) having the first duty cycle from the pulse generator 7 of 1 is input to the receiving unit 14 almost at the same time,
That is, the operation switch 2 provided on the driver side door 70
When the (main switch) and the operation switch 6 (sub switch) provided on the passenger side door 80 are switched to the rising side almost at the same time and the same command signal is given in the overlapping state,
If there is a time difference indicated by the solid line in FIG.
2T / 8, which is the maximum value of the duty input to the receiver, and the minimum value of the duty, which is the minimum value of the duty input to the receiving unit 14 when almost synchronized with each other as shown by the broken line in FIG.
8, the low-level input time L1 for the voltage comparison circuit 11 to determine the rising drive signal in the first range A is T / 8 ≦ L1 ≦ 2T as shown in FIG.
It is set to / 8.

Further, as shown in FIG. 5, the pulse signal (down command) having the second duty cycle from the second pulse generator 4 of the main unit 5 and the first pulse generator of the switch unit 8 are provided. When the pulse signal (down command) having the second duty cycle from 7 is input to the receiving unit 14 almost at the same time, that is, the operation switch 2 (main switch) provided on the driver side door 70 is switched to the down side. 80 on the passenger side when the vehicle is being operated
It is the maximum value of the duty input to the receiving unit 14 when the operation switch 6 (sub switch) provided in the switch is switched to the lower side and there is a time difference shown by the solid line in FIG.
By the 6 / 8T duty and the minimum value of the duty input to the receiving unit 14 when being substantially synchronized as shown by the broken line in FIG. 5, the 3 / 8T duty causes the voltage comparison circuit 11 to shift to the second range as shown in FIG. Low level input time L2 for determining the falling drive signal which is B is 3/8
T ≦ L2 ≦ 6 / 8T is set.

Further, as shown in FIG. 6, the pulse signal (increase command) having the first duty cycle from the second pulse generator 4 of the main unit 5 and the first pulse generator of the switch unit 8 are provided. When the pulse signal (down command) having the second duty cycle from 7 is input to the receiving unit 14 almost at the same time, that is, the operation switch 2 (main switch) provided on the driver side door 70 is switched to the up side. 80 on the passenger side when the vehicle is being operated
It is the maximum value of the duty input to the receiving unit 14 when the operation switch 6 (sub switch) provided in the switch is switched to the lower side and there is a time difference shown by the solid line in FIG.
By the 4 / 8T duty and the minimum value of the duty input to the receiving unit 14 when being substantially synchronized as shown by the broken line in FIG. 4 and the 3 / 8T duty, as shown in FIG. Low level input time L2 for determining the falling drive signal which is B is 3/8
Since T ≦ L2 ≦ 4 / 8T, the low level input time L1 for determining the rising drive signal is T / 8 ≦ L1 ≦ 2 / 8T, as is clear from FIG.
Therefore, the low level input time L2 for determining the descending drive signal is 3 / 8T ≦ L2 ≦ 6 / 8T.

In the power window control device 1 having such a structure, with the lock switch 3 being switched off (unlocked), the operation switch 2 of the main unit 5 provided on the driver side door 70 is operated. When the up command signal and the down command signal are given to the second pulse generator 4 by switching to the up side and the down side independently, the second pulse generator 4 causes the second pulse generator 4 to operate at the T / 8 duty corresponding to the up command signal. A pulse signal having a duty cycle of 1 and a pulse signal having a second duty cycle of 3 / 8T duty corresponding to the down command signal are output from the output terminal 5a.

The pulse signal having a first duty cycle of T / 8 duty (increase command) and the pulse signal having 3 / 8T duty (decrease command) output from the output terminal 5a are output unit 9 via the output signal line 9. The voltage waveform transferred to 14 and integrated by the integrating circuit 10 of the receiving circuit 12 is compared and determined by the voltage comparing circuit 11 whether it is in the first range A or the second range B.

As a result of the comparison judgment made by the voltage comparison circuit 11, the pulse signal (increase command) having the first duty cycle of T / 8 duty is within the first range A, so that the drive circuit 13 The rising drive signal is transferred to the drive circuit 13, and the pulse signal (down command) having the second duty cycle of 3 / 8T duty is within the second range B. Is transmitted, the forward motor power and the reverse motor power are supplied to the wind motor 15 so that the wind motor 15
Is rotated in the forward and reverse directions to drive the window glass connected to the window motor 15 to the up and down sides.

Also, with the lock switch 3 switched to the switch-off (unlocked) side, the operation switch 6 of the switch unit 8 provided on the passenger side door 80 is independently switched to the up side / down side and raised. When the command signal / falling command signal is given to the first pulse generator 7, the first pulse generator 7 has a pulse signal having a first duty cycle of T / 8 duty corresponding to the rising command signal. Since the pulse signal having the second duty cycle of 3 / 8T duty corresponding to the signal is output from the output terminal 5a, the comparison and determination is performed by the voltage comparison circuit 11 in the same manner as above, and the power is supplied,
The window glass connected to the window motor 15 is driven upward and downward.

Therefore, while the lock switch 3 is switched off (unlocked), the operation switch 2 of the main unit 5 provided on the driver side door 70 is switched to the up side to output the second rising command signal. At the same time, the operation switch 6 of the switch unit 8 provided on the passenger side door 80 is switched to the up side in the same direction as the operation switch 2 of the main unit 5 to give the first rise command signal. When given to the pulse generator 7, the pulse signal having the first duty cycle of T / 8 duty from the second pulse generator 4 on the main unit 5 side and the first pulse generator 7 on the switch unit 8 side Of T / 8
The pulse signal having the first duty cycle of the duty is transferred to the receiving unit 14 via the output signal line 9 in an overlapping manner.

In this case, the pulse signal (up command) having the first duty cycle of T / 8 duty from the second pulse generator 4 input to the receiving unit 14 and the T signal from the first pulse generator 7 are inputted. The maximum value of the duty of both of the pulse signal having the first duty cycle of / 8 duty (rising command) is 2 / 8T duty, and the minimum value of the duty of both is T / 8.
Since it is the duty, and T / 8 ≦ L1 ≦ 2 / 8T, the voltage comparison circuit 11 determines that it is within the first range A, determines the increase, and transfers the increase drive signal to the drive circuit 13. Therefore, the motor power in the forward direction is supplied to the window motor 15 to rotate the window motor 15 in the forward direction, and the window glass connected to the window motor 15 is driven upward.

Then, with the lock switch 3 switched to the switch-off (unlocked) side, the operation switch 2 of the main unit 5 provided on the driver side door 70 is switched to the down side to output the second descending command signal. At the same time, the operation switch 6 of the switch unit 8 provided on the passenger side door 80 is switched to the down side in the same direction as the operation switch 2 of the main unit 5 to give the first descending command signal. When given to the pulse generator 7, the pulse signal having the second duty cycle of 3 / 8T duty from the second pulse generator 4 on the main unit 5 side and the first pulse generator 7 on the switch unit 8 side Of 3
Pulse signal having a second duty cycle of / 8T duty and the receiving unit 1 via the output signal line 9.
It is transferred so as to overlap 4.

In this case, the pulse signal (down command) having a second duty cycle of 3 / 8T duty from the second pulse generator 4 input to the receiving unit 14 and the pulse signal from the first pulse generator 7 / 8T The maximum value of the duty of both of the pulse signal (down command) having the second duty cycle of 6 / 8T is 6 / 8T.
It is a duty and the minimum value of both duty is 3
/ 8T duty, 3 / 8T ≦ L1 ≦ 6/8
Since it becomes T, the voltage comparison circuit 11 determines that it is in the second range B and determines the descending, and transfers the descending drive signal to the driving circuit 13. Power is supplied to rotate the window motor 15 in the reverse direction, and the window glass connected to the window motor 15 is driven downward.

Also, with the lock switch 3 being switched off (unlocked), the operation switch 2 of the main unit 5 provided on the driver's side door 70 is switched to the up side to output the second rising command signal. At the same time, the operation switch 6 of the switch unit 8 provided on the passenger side door 80 is switched to the down side opposite to the operation switch 2 of the main switch 5 to give the first descending command signal. When the pulse signal is given to the pulse generator 7 of the main unit 5, the pulse signal (up command) having the first duty cycle of T / 8 duty from the second pulse generator 4 on the main unit 5 side and the first pulse of the switch unit 8 are given. Generator 7
Pulse signal (down command) having a second duty cycle of 3 / 8T duty from the output signal line 9
And is transferred to the receiving unit 14 via the.

In this case, the pulse signal (increase command) having the first duty cycle of T / 8 duty from the second pulse generator 4 input to the receiving unit 14 and the pulse signal from the first pulse generator 7 The maximum value of the duty of both of the pulse signal (down command) having the second duty cycle of / 8T is 4 / 8T, and the minimum value of the duty of both is 3 / 8T.
Since it is the duty, and 3 / 8T ≦ L1 ≦ 6 / 8T, the voltage comparison circuit 11 determines that the voltage is within the second range B and determines the voltage drop, and transfers the voltage drop drive signal to the drive circuit 13. Therefore, the motor power in the reverse direction is supplied to the wind motor 15 to rotate the wind motor 15 in the reverse direction, and the wind glass connected to the wind motor 15 is driven downward.

Further, when the lock switch 3 is switched to the switch-on (lock) side, the output level of the output terminal 5a of the main unit 5 provided on the driver's side door 70 is switched to a fixed low level, so that the receiving unit. Since the pulse signal is not transferred to the integrating circuit 14 of 14 and the driving circuit 13 is not operated thereby, the window motor 15 does not rotate and the window glass is stopped.

FIG. 8 shows another embodiment of the power window control device according to the present invention. The main unit 5 and the switch unit 8 other than the receiving unit 14 shown in FIG. There is.

In this case, the pulse detection circuit 16 which receives the signal input to the integration circuit 10 in the reception circuit 12 and the output voltage of the integration circuit 10 when the pulse detection circuit 16 detects a pulse are outside the second range B. And a signal discriminating circuit 17 for generating a rising drive signal when
In the pulse detection circuit 16, the output signal line 9 is connected to the input side, and the data line 10a provided in the integration circuit 10 and the output line 16a of the pulse detection circuit 16 are connected to the input side of the signal discrimination circuit 17.

Further, the output signal line 17 of the signal discrimination circuit 17
When a is connected to the rising side signal line 11a of the voltage comparison circuit 11 and the pulse signal is transferred from the output signal line 9 to the integration circuit 10, the pulse detection circuit 16 detects the generation of the pulse and the signal determination circuit 17 is activated. At this time, the output voltage from the integrating circuit 10 is 3 / 8T ≦ L1 ≦ 6/8
Outside the second range B corresponding to the duty of T 1, that is, including the first range A 0 <2 / 8T range and 6 / 8T range
When in the range of <1, the ascending drive signal is transferred to the drive circuit 13 via the ascending side signal line 11a.
The drive circuit 13 supplies the forward direction motor power to the window motor 15 by the ascending drive signal to rotate the window motor 15 in the forward direction and drive the window glass connected to the window motor 15 to the upward side. There is.

Here, the second of the pulse signals transferred by the pulse detection circuit 16 and the signal discrimination circuit 17 is used.
Since the voltage level outside the range B can be used as the rising drive signal, the condition of the up range, which is the first range A determined by T / 8 ≦ L1 ≦ 2 / 8T, is widened to It is designed to improve accuracy.

[0046]

Since the power window control device according to the present invention is configured as described above, the pulse signal to be transferred to the integrating circuit can be transferred together with both the rising command signal and the falling command signal. Since it is not necessary to transfer by two channels like the one like the one described above, the wiring can be saved, and the command signal to be prioritized can be arbitrarily set by selecting the duty cycle of the pulse by the voltage comparison circuit. It is not necessary to separately provide a means for making a priority judgment like the one described above, and the excellent effect of extremely simplifying the circuit configuration is brought about.

[Brief description of drawings]

FIG. 1 is a block diaphragm of an embodiment of a power window control device of the present invention.

FIG. 2 is a specific circuit configuration diagram of a pulse generator portion in the power window control device shown in FIG.

FIG. 3 is a time chart for explaining the operation of the power window control device shown in FIG.

FIG. 4 is a time chart explaining the operation of the power window control device shown in FIG.

5 is a time chart explaining the operation of the power window control device shown in FIG. 1. FIG.

FIG. 6 is a time chart explaining the operation of the power window control device shown in FIG.

7 is a characteristic diagram of a voltage comparison circuit in the power window control device shown in FIG.

FIG. 8 is a block diaphragm of another embodiment according to the power window control device of the present invention.

FIG. 9 is a block diaphragm of a conventional power window control device.

[Explanation of symbols]

 1 Power Window Control Device 2 Second Switch 4 Second Pulse Generator 6 First Switch 7 First Pulse Generator 9 Output Signal Line 10 Integration Circuit 11 Voltage Comparison Circuit 13 Drive Circuit 15 Wind Motor 16 Pulse Detection Circuit 17 Signal Discrimination Circuit A First Range B Second Range Tr1, Tr2 Transistor

Claims (3)

[Claims] 1. A first switch for giving a command signal for raising and lowering a window glass, and a pulse signal of a predetermined frequency, the pulse signal being generated by the first command by the raising command signal.
A first pulse generator that switches to a second duty cycle in response to a down command signal, an integrating circuit that integrates the pulse signal, and an output voltage of the integrating circuit are in a first range. A voltage comparison circuit that sometimes generates an ascending drive signal and a descending drive signal when in the second range; and a window drive circuit that drives the window glass to the ascending movement side by the ascending drive signal and a descending drive signal. A power window control device comprising a drive circuit for driving a window motor on the descending movement side of the window glass. 2. A second switch for giving a command signal for raising, lowering, and stopping operation of the window glass, and a pulse signal of a predetermined frequency is generated, and the first duty cycle is set by the raising command signal of the second switch. A second pulse generator that switches to a second duty cycle by a switching and down command signal and switches to a low level by an operation prohibition signal is provided, and the outputs of the first and second pulse generators are open collectors of transistors. Circuit and the output signal lines of the first and second pulse generators are wired O
The power window control device according to claim 1, wherein the power window control device is connected by R. 3. A pulse detection circuit for detecting the occurrence of a pulse signal, and a rising drive signal when the output voltage of the integration circuit is outside the second range when the pulse detection circuit detects a pulse. The power window control device according to claim 1, further comprising a signal discriminating circuit that generates a signal.