KR20170049687A - Control circuit for a multifunction switch use for driving a wiper of a car - Google Patents

Control circuit for a multifunction switch use for driving a wiper of a car Download PDF

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Publication number
KR20170049687A
KR20170049687A KR1020150149508A KR20150149508A KR20170049687A KR 20170049687 A KR20170049687 A KR 20170049687A KR 1020150149508 A KR1020150149508 A KR 1020150149508A KR 20150149508 A KR20150149508 A KR 20150149508A KR 20170049687 A KR20170049687 A KR 20170049687A
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KR
South Korea
Prior art keywords
wiper
switch
motor
washer
input terminal
Prior art date
Application number
KR1020150149508A
Other languages
Korean (ko)
Inventor
신승훈
권순학
안상우
Original Assignee
엘에스오토모티브 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 엘에스오토모티브 주식회사 filed Critical 엘에스오토모티브 주식회사
Priority to KR1020150149508A priority Critical patent/KR20170049687A/en
Publication of KR20170049687A publication Critical patent/KR20170049687A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0814—Wipers or the like, e.g. scrapers characterised by the drive electrically driven using several drive motors; motor synchronisation circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0803—Intermittent control circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0803—Intermittent control circuits
    • B60S1/0807—Intermittent control circuits using electronic control means, e.g. tubes, semiconductors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

The present invention relates to a control circuit of a multifunction switch for driving a windshield wiper of a vehicle capable of correctly controlling operation of a wiper, an adjustment of a rotation interval, and an injection timing of a washer liquid. According to the present invention, the control circuit comprises: input terminals of fast rotation switch, a washer motor switch, a one-rotation switch, and a slow rotation switch of a wiper; a variable resistor signal input terminal to receive a varied amount of a variable resistor to adjust an intermittent rotation of the wiper; an input terminal of an intermittent rotation selection switch to select intermittent rotation of the wiper; a control unit receiving a signal of each of the input terminals to control operation of a wiper motor and a washer motor; a wiper motor driving unit to operate the wiper motor in accordance with a wiper motor control signal of the control unit; and a washer motor driving unit to operate the washer motor in accordance with a washer motor control signal of the control unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control circuit for a multi-function switch for driving a wiper of an automobile,

The present invention relates to a control circuit for a multifunction switch for driving a wiper of an automobile, and more particularly, to a control circuit for a multifunction switch for driving a wiper of an automobile, A variable resistance signal input terminal for receiving a variable amount of the variable resistor for controlling the turning, an input terminal of an intermittent turn selection switch for selecting intermittent turn of the wiper, a wiper motor and a washer motor A wiper motor driving unit for driving the wiper motor according to the wiper motor control signal of the control unit and a washer motor driving unit for driving the washer motor in accordance with the washer motor control signal of the control unit And more particularly to a control circuit of a multi-function switch for wiper driving.

Generally, a wiper is mounted on a vehicle as a device for removing foreign matter when it is obstructed in securing the forward view of the driver, such as during rainfall or snowfall, or when there is dust on the front window.

Such a wiper is driven by the operation of the driver's multi-function switch for wiper driving, and the wiper installed outside the front window rotates at a certain angle to remove foreign matter such as rain drops and dust which are formed on the front window.

In the automobile, a washer fluid ejection device composed of a washer motor switch and a washer fluid storage tank capable of ejecting a washer fluid, which is installed in the form of a push button on the multifunction switch for driving the wiper, is provided.

The washer liquid spraying device is used to spray the washer liquid onto the front surface to clean the window when the amount of the applied paint on the front surface window is small or the front window is seriously contaminated.

1 is a control circuit diagram of a conventional multi-function switch for wiper driving.

Referring to the drawings, a control circuit of a conventional multi-function switch for wiper driving includes a wiper motor driving unit 10 for operating a wiper, a wiper gap adjusting switch unit 20 for adjusting a turning distance of a wiper motor to be operated, A washer motor driving unit 30 for operating a motor and a control unit for controlling the operation of the wiper motor and the washer motor according to the input signals of the wiper motor driving unit 10, the wiper interval adjusting switch unit 20 and the washer motor driving unit 30 And a control unit 40.

In the conventional multifunction switch for wiper driving as described above, when the wiper IC 41 of the control unit 40 receives the input of the driving switch S1 of the wiper motor driving unit 10 and operates the wiper motor M1 And when the wiper motor driving unit 10 is in the ON state, the switch signal corresponding to the variable amount of the variable resistor R3 of the gap adjusting switch S2 of the wiper gap adjusting switch unit 20 is received, The driving time of the wiper motor M1 is controlled to control the turning interval of the wiper motor M1.

At this time, the turning interval of the wiper made by the wiper interval adjusting switch unit 20 is determined by the wiper turning MIST, the intermittent turning INT, the low speed turning LO, and the wiper turning according to the variable amount of the variable resistor R3. There is a high speed line (HI), and usually a low speed turn (LO) or a high speed line turn (HI) has a fixed turn interval and the intermittent turn (INT) .

The control unit 40 drives the washer motor M2 according to the opening and closing state of the washer motor switch S3 of the washer motor driving unit 30 to eject the washer fluid contained in the washer fluid storage tank (not shown).

The control circuit of the conventional multifunction switch for wiper driving as described above includes a control unit 40 for receiving signals of the wiper motor driving unit 10, the wiper interval adjusting switch unit 20 and the washer motor driving unit 30 Output process of the wiper IC 41 is performed in an analog manner, there is a concern that the control may be performed inaccurately according to the resistance recognized by the wiper IC 41 and the characteristic deviation of the components of the capacitor.

FIG. 2 is a diagram showing a contact structure of the conventional multi-function switch for wiper driving. According to the contact structure diagram, the multi-function switch is controlled so that the wiper is turned once when the wiper is stopped (OFF) (INT) of the wiper interval adjusting switch and the wiper turning interval is set to the low speed (LOW), if the contact of the IGN1 switch terminal and the S + terminal is attached, the control circuit is short ), And the multi-function switch may be damaged.

The IGN1 switch is turned on when the user turns the vehicle key in a direction to turn on the ignition with a switch that is turned on / off by an operation of turning the vehicle key to turn on the vehicle. The IGN1 switch is turned on by the IGN1 switch Power is supplied to essential components for driving the engine.

When the vehicle is started, the IGN2 switch is also turned on in addition to the IGN1 switch, and the IGN2 switch is a switch for supplying power to components other than the components supplied by the IGN1 switch.

SUMMARY OF THE INVENTION The present invention, which has been developed to overcome the above-described problems of the related art, is to solve the problem that the conventional control circuit restricts the capacity of the resistor and the condenser recognized by the wiper IC of the control unit and limits the timing control of the wiper And a control circuit of a multifunction switch for driving a wiper of an automobile is provided for preventing the contact of the multifunction switch from being short-circuited and the switch being burned out.

According to an aspect of the present invention, there is provided a control circuit for a multi-function switch for driving an automobile, the control circuit comprising: A variable resistance signal input terminal for receiving a variable amount of variable resistance for controlling the intermittent turning of the wiper, a variable resistance signal input terminal for receiving a variable resistance signal input terminal for inputting a variable amount of the variable resistance for controlling the wiper, A control unit for controlling the operation of the wiper motor and the washer motor by receiving signals of the input terminals of the intermittent turning selection switch for selecting the turning of the wiper motor and the wiper motor control signal of the wiper motor, A washer motor control unit for controlling the washer motor in accordance with the washer motor control signal of the control unit, It is characterized in that comprises section.

In the control circuit of the multi-function switch for wiper driving, the control unit 200 may output the wiper motor control signal output to the wiper motor driving unit 300 through the IPS unit 210 configured using the IPS device have.

In the control circuit of the multi-function switch for wiper driving, the input terminal 110 of the high-speed line switch (HI-SW) of the wiper receives power from the IGN2 switch of the vehicle, The switch signal of the switch of the wiper motor M1 may be input to the wiper motor driving unit 300 to drive the wiper motor M1 at a predetermined high speed.

In the control circuit of the multi-function switch for wiper driving, the input terminal 120 of the washer motor position WA-SW receives power from the IGN2 switch of the automobile and receives the switch of the washer motor position WA- Closing signal of the washer motor M2 may be input to the washer motor driving unit 400 to drive the washer motor M2.

In the control circuit of the multi-function switch for wiper driving, the one-turn and low-speed turn-switch input terminals 130 may be switches that are selected one turn or low-speed turn depending on the open / closed state of the switch.

In the control circuit of the multi-function switch for wiper driving, the controller 200 may be a microcontroller unit (MCU) designed in an ASIC manner.

The control unit 200 may receive a status signal of the wiper motor driving unit 300 through the wiper motor driving unit feedback terminal 160 for controlling and monitoring the wiper motor driving unit 300. [

The control circuit of the multifunction switch for driving a wiper of the present invention having the above-described structure simplifies the contact structure, so that it is possible to more precisely control the driving of the wiper of the automobile, the adjustment of the turning interval and the timing of spraying the washer liquid. It is possible to prevent the multi-function switch from being burned out by preventing the short-circuit of the contact of the function switch.

In addition, since the control circuit of the present invention is implemented in the form of an application-specific integrated circuit (ASIC) and a signal is transmitted to the microcontroller unit (MCU), the resistance transferred to the conventional wiper IC, The control error of the wiper can be minimized and the wiper can be accurately controlled.

Further, since the control circuit of the present invention, which can be implemented in the form of an ASIC, uses an IPS (Intelligent Power Switch) element and a microcontroller unit (MCU) element smaller than the relay elements used in the conventional control circuit, It is possible to apply SMD (Surface Mount Device) process instead of manual soldering of a printed circuit board (PCB) during the device mounting of the control circuit, thereby improving the productivity. Further, It is a very advanced invention that can increase the degree of freedom in circuit design.

1 is a control circuit diagram of a conventional multi-function switch for wiper driving,
2 is a diagram showing a contact structure of a conventional multi-function switch for wiper driving,
3 is a control circuit diagram of a multi-function switch for wiper driving according to the present invention,
4 is a diagram showing the contact structure of the multi-function switch for wiper driving according to the present invention.

Hereinafter, the configuration and operation of the control circuit of the multi-function switch for wiper driving according to the present invention will be described in detail with reference to the accompanying drawings.

It is to be noted, however, that the disclosed drawings are provided as examples for allowing a person skilled in the art to sufficiently convey the spirit of the present invention. Accordingly, the present invention is not limited to the following drawings, but may be embodied in other forms.

In addition, unless otherwise defined, the terms used in the description of the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. In the following description and the accompanying drawings, A detailed description of known functions and configurations that may be unnecessarily blurred is omitted.

3 is a control circuit diagram of a multi-function switch for wiper driving according to the present invention.

3, the control circuit of the multifunction switch for wiper driving according to the present invention includes an input terminal 110 of a high-speed line switch (HI-SW) of a wiper, an input terminal 110 of a washer motor position WA- An input terminal 130 of a wiper 1 circuit and a low speed turn switch LO / MIST-SW, and a variable resistance signal input terminal 130 receiving a variable amount of the variable resistor R10 for controlling intermittent turning of the wiper, An input terminal 150 of an intermittent turn selection switch INT-SW for selecting an intermittent turn of the wiper and an input terminal 150 of a high speed turn switch input terminal 110, a washer motor position input terminal 120, The operation of the wiper motor M1 and the washer motor M2 is controlled by receiving signals from the rotary switch input terminal 130, the variable resistance signal input terminal 140 and the intermittent rotation selection switch input terminal 150 A wiper motor M1 for driving the wiper motor M1 according to a wiper motor control signal of the controller 200, Washer motor according to the control signal of the motor driver 300 and the controller 200 is configured to include a washer motor driver 400 for driving the washer motor (M2).

The controller 200 may output the wiper motor control signal to the wiper motor driving unit 300 through the IPS unit 210 configured using an IPS (Intelligent Power Switch) device.

The input terminal 110 of the high speed line switch HI-SW of the wiper and the input terminal 120 of the washer motor position WA-SW receive power from the IGN2 switch which is turned on when the vehicle is started The switch signal of the switch of the high speed line switch HI-SW is input to the wiper motor driving unit 300 and the switch opening / closing signal of the washer motor position WA-SH is inputted to the washer motor position input terminal 120, And the washer motor driving unit 400, respectively.

Also, the power is input from the IGN1 switch which is turned on when the vehicle is started by the control unit 200, and the control unit 200 is activated.

In order to control and monitor the wiper motor driving unit 300, the wiper motor driving unit 300 may include a wiper motor (not shown) Receives a status signal of the wiper motor driving unit 300 through a driving unit feedback terminal 160 and has a ground terminal 170 for a ground of the power source.

Preferably, the control unit 200 of the control circuit of the present invention configured as described above is a one-chip microcontroller unit (MCU) designed in an ASIC (Application-Specific Integrated Circuit) system.

The control circuit according to the present invention having the control unit 200 that can be implemented in the form of an MCU designed in the ASIC manner minimizes errors in the control of the wiper regardless of the characteristics of the resistors or capacitors transferred to the wiper IC, Accurate control becomes possible.

The operation of the control circuit of the multi-function switch for wiper driving of the automobile of the present invention constructed as above will be described.

First, when the user inputs a key to start the vehicle, the IGN1 switch is turned on, and the control unit 200 is activated by supplying the control power to the control unit 200 of the present invention.

Subsequently, the IGN2 switch of the automobile is also turned on, and power is supplied to the high-speed line switch (HI-SW) and the washer motor position (WA-SW) of the wiper of the control circuit of the present invention.

In this state, the controller 200 controls the ground terminal 170, the washer motor position input terminal 120, the first and second speed swing switch input terminals 130, the variable resistance signal input terminal 140, And outputs the wiper motor M1 (M1) to the wiper motor driving unit 300 through the IPS unit 210 in accordance with the opening and closing states of the first and the low speed turning switch input terminals 130, ) To rotate the wiper once or at a low speed.

When the ON state signal of the intermittent turn switch INT-SW is input to the intermittent turn selection switch input terminal 150 and the variable signal of the variable resistor R10 is input through the variable resistance signal input terminal 140 And generates a control signal for the wiper motor M1 having a predetermined turning amount and outputs the control signal to the wiper motor driving unit 300 through the IPS unit 210 to intermittently drive the wiper motor M1 by the predetermined turning distance.

When the high-speed line switch (HI-SW) of the wiper to which power is supplied from the IGN2 switch of the automobile is turned on, power is supplied from the corresponding IGN2 switch to the wiper motor driving unit 300 so that the wiper motor M1 is operated The wiper is turned at a predetermined high speed.

When the washer motor position WA-SW to which power is supplied from the IGN2 switch of the automobile is turned ON, the electric power is applied from the IGN2 switch to the washer motor driving unit 400 to actuate the washer motor M2, (M2) is driven to blow out the washer fluid contained in the washer liquid storage tank (not shown) to the front window.

FIG. 4 is a view showing the contact structure of the multi-function switch for wiper driving according to the present invention. In comparison with the contact structure of the conventional multi-function switch for wiper driving, the contacts of the IGN1 switch terminal and the S + (MIST) is performed at the time of the conventional wiper stop (OFF) and when the multi-function switch is adjusted to the low speed state (LOW) when the wiper interval adjusting switch interval is adjusted The control circuit can be prevented from being short-circuited, and the control circuit itself can be simplified.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, , Changes and substitutions are to be construed as falling within the scope of protection of the present invention.

Description of the Related Art [0002]
110; High speed line switch (HI-SW) input terminal
120; Washer motor position (WA-SW) input terminal
130; Wiper 1-turn and low-speed turn switch (LO / MIST-SW) input terminal
140; Variable resistance signal input terminal
150; Intermittent turn selection switch (INT-SW) input terminal
160; Wiper motor drive feedback terminal
170; Grounding terminal
200; The control unit
210; IPS section
300; Wiper motor drive part
400; Washer motor drive

Claims (7)

A control circuit of a multi-function switch for wiper drive,
An input terminal 110 of a high-speed line switch (HI-SW) of the wiper;
An input terminal 120 of the washer motor position WA-SW;
An input terminal 130 of the wiper 1-turn circuit and the low-speed turn signal switch (LO / MIST-SW);
A variable resistance signal input terminal 140 receiving a variable amount of the variable resistor R10 for controlling the intermittent turning of the wiper;
An input terminal 150 of the intermittent turn selection switch INT-SW for selecting the intermittent turn of the wiper;
A control unit 200 receiving signals of the input terminals and controlling operations of the wiper motor M1 and the washer motor M2;
A wiper motor driving unit 300 for driving the wiper motor M1 according to a wiper motor control signal of the controller 200;
And a washer motor driving unit (400) for driving the washer motor (M2) according to a washer motor control signal of the control unit (200).
The method according to claim 1,
Wherein the control unit 200 outputs a wiper motor control signal to the wiper motor driving unit 300 through an IPS unit 210 configured using an IPS device.
The method according to claim 1,
The input terminal 110 of the high speed line switch (HI-SW) of the wiper receives power from the IGN2 switch of the vehicle,
The switch signal of the switch of the high speed line switch HI-SW is input to the wiper motor driving unit 300 to drive the wiper motor M1 at a predetermined high speed. Circuit.
The method according to claim 1,
The input terminal 120 of the washer motor position WA-SW receives power from an IGN2 switch of the vehicle,
Wherein the opening / closing signal of the switch of the washer motor position WA-SW is inputted to the washer motor driving unit 400 to drive the washer motor M2.
The method according to claim 1,
The control circuit of the multi-function switch for wiper driving according to claim 1, wherein the one-turn and low-speed turn-switch input terminals (130) are switches for selecting one turn or low-speed turn depending on the opening and closing states of the switches.
The control circuit of a multi-function switch for wiper driving according to claim 1, wherein the controller (200) is a microcontroller unit (MCU) designed in an ASIC manner.
The apparatus of claim 1, wherein the controller (200)
And a status signal of the wiper motor driving unit (300) is inputted through the wiper motor driving unit feedback terminal (160) for control and monitoring of the wiper motor driving unit (300).
KR1020150149508A 2015-10-27 2015-10-27 Control circuit for a multifunction switch use for driving a wiper of a car KR20170049687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150149508A KR20170049687A (en) 2015-10-27 2015-10-27 Control circuit for a multifunction switch use for driving a wiper of a car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150149508A KR20170049687A (en) 2015-10-27 2015-10-27 Control circuit for a multifunction switch use for driving a wiper of a car

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108045345A (en) * 2017-12-01 2018-05-18 中车株洲电力机车有限公司 A kind of rail vehicle washing system and control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108045345A (en) * 2017-12-01 2018-05-18 中车株洲电力机车有限公司 A kind of rail vehicle washing system and control method

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