CN103625431A - Contactless controller of automobile windscreen wiper - Google Patents
Contactless controller of automobile windscreen wiper Download PDFInfo
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- CN103625431A CN103625431A CN201310694849.9A CN201310694849A CN103625431A CN 103625431 A CN103625431 A CN 103625431A CN 201310694849 A CN201310694849 A CN 201310694849A CN 103625431 A CN103625431 A CN 103625431A
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Abstract
The invention relates to a contactless controller of an automobile windscreen wiper. The contactless controller is characterized by comprising a 12V direct-current power source, an intermittent oscillation and oscillation frequency regulation circuit, and a windscreen wiper motor drive circuit, wherein the intermittent oscillation and oscillation frequency regulation circuit is composed of a time base circuit IC1, a resistor R1, a resistor R2, a linear potentiometer RP and an electrolytic capacitor; the NE555time-base circuit IC1 is adopted; the windscreen wiper motor drive circuit is composed of a resistor R3, an enhanced N-channel field effect tube VT1, a resistor R4 and a windscreen wiper motor M. The contactless controller of the automobile windscreen wiper has the advantages that a storage battery of an automobile is used as a working power source of the contactless controller, the enhanced N-channel field effect tube is used as a contactless control switch to control the operation of the windscreen wiper motor in stead of a relay circuit with contacts, and as a result, electromagnetic interference such as electric sparks generated in contacting of the relay contacts is eliminated and the reliability of the controller during working is improved, and furthermore, the intermittent time can be set according to requirements; and therefore, the contactless controller of the automobile windscreen wiper is one of ideal alternative devices for automation of various automobiles.
Description
Technical field
The invention belongs to technical field of automotive electronics, is about a kind of wiper contactless controller.
Background technology
Wiper hydrophone master cock at multiplex intermittence, it consists of time delay circuit and relay contact switch, and this control rain shaving electrical machine relay contact switch can periodically produce electro spark, the normal operation of this meeting severe jamming car inner electronic equipment.
Wiper contactless controller forms intermittent oscillation circuit by time base circuit and peripheral resistance capacitance, it is working power that wiper contactless controller utilizes the storage battery on automobile, adopt enhancement mode N channel field-effect pipe as contactless control switch, to control the operation of rain shaving electrical machine, there is not relay contact ablation phenomen, can be used for replacing having the relay circuit of contact, the electromagnetic interference such as electro spark that produce while having stopped relay contact contact, the intermittent time of controller can freely arrange as required, can control high-power rain shaving electrical machine, and have and install easily, antivibration, reliable in action, the features such as cost of development is low, it is one of desirable alternative of various automotive automations.
Below describe wiper contactless controller of the present invention related relevant technologies content in implementation process in detail.
Summary of the invention
Goal of the invention and beneficial effect: wiper contactless controller forms intermittent oscillation circuit by time base circuit and peripheral resistance capacitance, it is working power that wiper contactless controller utilizes the storage battery on automobile, adopt enhancement mode N channel field-effect pipe as contactless control switch, to control the operation of rain shaving electrical machine, there is not relay contact ablation phenomen, can be used for replacing having the relay circuit of contact, the electromagnetic interference such as electro spark that produce while having stopped relay contact contact, the intermittent time of controller can freely arrange as required, can control high-power rain shaving electrical machine, and have and install easily, antivibration, reliable in action, the features such as cost of development is low, it is one of desirable alternative of various automotive automations.
Circuit working principle: wiper contactless controller forms intermittent oscillation circuit by time base circuit IC1 and resistance R 1, resistance R 2, linearity potentiometer RP and chemical capacitor C1.This circuit is connected after 12V direct supply, and because the voltage on chemical capacitor C1 is very low, the 3rd pin of time base circuit IC1 is output as high level.12V direct supply charges to chemical capacitor C1 through resistance R 1, resistance R 2 and linearity potentiometer RP, voltage on chemical capacitor C1 progressively rises, when the voltage on chemical capacitor C1 rises to 2/3 direct supply voltage, the upset of time base circuit IC1 internal trigger, the 3rd pin output low level of time base circuit IC1, the simultaneously internal discharge pipe conducting of time base circuit IC1, chemical capacitor C1 powers on to press off and begins that the 7th pin by time base circuit IC1 discharges through resistance R 2.Voltage drop on chemical capacitor C1 is during to 1/3 direct supply voltage, time base circuit IC1 internal trigger overturns again, the 3rd pin output high level of time base circuit IC1, internal discharge pipe cut-off simultaneously, 12V direct supply charges to chemical capacitor C1 through resistance R 1, resistance R 2 and linearity potentiometer RP again, and formation interrupted oscillation so goes round and begins again.
Between the 3rd pin output high period of time base circuit IC1, by enhancement mode N channel field-effect pipe VT1, drive rain shaving electrical machine M to move, during the 3rd pin output low level of time base circuit IC1, rain shaving electrical machine M is out of service.
Technical characterictic: wiper contactless controller, it comprises 12V direct supply, interrupted oscillation and oscillation frequency regulating circuit, rain shaving electrical machine driving circuit, it is characterized in that:
Interrupted oscillation and oscillation frequency regulating circuit: it is by time base circuit IC1, resistance R 1, resistance R 2, linearity potentiometer RP and chemical capacitor C1 form, the model that time base circuit IC1 selects is NE555, the anodal VCC of one termination circuit of the 4th pin of time base circuit IC1 and the 8th pin and resistance R 1, the 7th pin of time base circuit IC1 is connected with the other end of resistance R 1 and one end of resistance R 2, the other end of resistance R 2 connects one end of linearity potentiometer RP, the 2nd pin of time base circuit IC1 is connected with the other end and the movable end thereof of linearity potentiometer RP with the 6th pin, the 2nd pin of time base circuit IC1 and the 6th pin connect the positive pole of chemical capacitor C1, the 1st pin connection circuit ground GND of the negative pole of chemical capacitor C1 and time base circuit IC1,
Rain shaving electrical machine driving circuit: it is comprised of resistance R 3, enhancement mode N channel field-effect pipe VT1, resistance R 4 and rain shaving electrical machine M, the 3rd pin of time base circuit IC1 connects the grid G of enhancement mode N channel field-effect pipe VT1 and one end of resistance R 4 by resistance R 3, the source S of enhancement mode N channel field-effect pipe VT1 and the other end connection circuit of resistance R 4 ground GND, the drain D of enhancement mode N channel field-effect pipe VT1 connects the negative pole of rain shaving electrical machine M, the anodal VCC of anodal connection circuit of rain shaving electrical machine M;
The anodal VCC of anodal connection circuit of 12V direct supply, the negative pole connection circuit ground GND of 12V direct supply.
Accompanying drawing explanation
Accompanying drawing is the circuit working schematic diagram of an embodiment of wiper contactless controller provided by the invention.
The specific embodiment
According to wiper contactless controller circuit working schematic diagram shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in summary of the invention, and the components and parts technical parameter described in embodiment requires and circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.
The selection of components and parts and technical parameter thereof
IC1 is time base circuit, and the model of selecting is NE555 or LM555, and packing forms is dual inline type 8 pins; Each pin function: 1 pin is circuit ground GND; 2 pin are trigger end; 3 pin level output ends; 4 pin preset ends; 5 pin are for controlling voltage; 6 pin thresholdings (threshold value); 7 pin are discharge end; 8 pin are circuit anode VCC;
The resistance of resistance R 1 is 22K Ω; The resistance of resistance R 2 is 43K Ω; Resistance R 3 resistances are 62K Ω; Resistance R 4 resistances are 120K Ω;
RP is linearity potentiometer, and its resistance is 33K Ω;
C1 is chemical capacitor, and its capacity is 20～47 μ F/25V;
VT1 is enhancement mode N channel field-effect pipe, and the model of selecting is IRFZ30, must radiating gill be installed for it;
M is rain shaving electrical machine, and selecting direct current working volts is the rain shaving electrical machine of 12V.
Circuit production main points and circuit debugging
Because of the circuit structure of wiper contactless controller fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, and circuit of the present invention does not substantially need to carry out any debugging and can work;
Linearity potentiometer RP is for adjusting the frequency of operation of wiper contactless controller, and the resistance of linearity potentiometer RP is larger, and the frequency of operation of intermittent oscillation circuit is just lower;
The capacitance of chemical capacitor C1 also determines the oscillation frequency of intermittent oscillation circuit, and the capacity that changes chemical capacitor C1 also can change the oscillation frequency of intermittent oscillation circuit, controls the running frequency of rain shaving electrical machine M that is:.
Claims (1)
1. a wiper contactless controller, it comprises 12V direct supply, interrupted oscillation and oscillation frequency regulating circuit, rain shaving electrical machine driving circuit, it is characterized in that:
Described interrupted oscillation and oscillation frequency regulating circuit are by time base circuit IC1, resistance R 1, resistance R 2, linearity potentiometer RP and chemical capacitor C1 form, the model that time base circuit IC1 selects is NE555, the anodal VCC of one termination circuit of the 4th pin of time base circuit IC1 and the 8th pin and resistance R 1, the 7th pin of time base circuit IC1 is connected with the other end of resistance R 1 and one end of resistance R 2, the other end of resistance R 2 connects one end of linearity potentiometer RP, the 2nd pin of time base circuit IC1 is connected with the other end and the movable end thereof of linearity potentiometer RP with the 6th pin, the 2nd pin of time base circuit IC1 and the 6th pin connect the positive pole of chemical capacitor C1, the 1st pin connection circuit ground GND of the negative pole of chemical capacitor C1 and time base circuit IC1,
Described rain shaving electrical machine driving circuit is comprised of resistance R 3, enhancement mode N channel field-effect pipe VT1, resistance R 4 and rain shaving electrical machine M, the 3rd pin of time base circuit IC1 connects the grid G of enhancement mode N channel field-effect pipe VT1 and one end of resistance R 4 by resistance R 3, the source S of enhancement mode N channel field-effect pipe VT1 and the other end connection circuit of resistance R 4 ground GND, the drain D of enhancement mode N channel field-effect pipe VT1 connects the negative pole of rain shaving electrical machine M, the anodal VCC of anodal connection circuit of rain shaving electrical machine M;
The anodal VCC of anodal connection circuit of described 12V direct supply, the negative pole connection circuit ground GND of 12V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310694849.9A CN103625431A (en) | 2013-12-17 | 2013-12-17 | Contactless controller of automobile windscreen wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310694849.9A CN103625431A (en) | 2013-12-17 | 2013-12-17 | Contactless controller of automobile windscreen wiper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103625431A true CN103625431A (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310694849.9A Pending CN103625431A (en) | 2013-12-17 | 2013-12-17 | Contactless controller of automobile windscreen wiper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162920A (en) * | 2018-01-09 | 2018-06-15 | 周芸 | Automobile raindrop trigger wiper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057152U (en) * | 1989-03-22 | 1990-05-16 | 乐培芳 | Controller for electric wiper |
| EP0504606A1 (en) * | 1991-03-21 | 1992-09-23 | MAN Nutzfahrzeuge Aktiengesellschaft | Control device for the windscreen wiper motor of a motor vehicle |
| CN2340652Y (en) * | 1998-06-05 | 1999-09-29 | 田忠义 | Adjustable windscreen wiper controller |
| CN103078576A (en) * | 2013-02-16 | 2013-05-01 | 黄宇嵩 | Direct-current motor pulse width type stepless speed adjuster |
| DE102011086408A1 (en) * | 2011-11-15 | 2013-05-16 | Robert Bosch Gmbh | Method for actuating electric circuit in circuit of windscreen wiper drive of windscreen wiper system, involves parking wiper in predetermined parking position, and opening electric circuit after wiper is parked |
| CN203580889U (en) * | 2013-12-17 | 2014-05-07 | 周云侠 | Contactless controller of automobile windscreen wiper |
-
2013
- 2013-12-17 CN CN201310694849.9A patent/CN103625431A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057152U (en) * | 1989-03-22 | 1990-05-16 | 乐培芳 | Controller for electric wiper |
| EP0504606A1 (en) * | 1991-03-21 | 1992-09-23 | MAN Nutzfahrzeuge Aktiengesellschaft | Control device for the windscreen wiper motor of a motor vehicle |
| CN2340652Y (en) * | 1998-06-05 | 1999-09-29 | 田忠义 | Adjustable windscreen wiper controller |
| DE102011086408A1 (en) * | 2011-11-15 | 2013-05-16 | Robert Bosch Gmbh | Method for actuating electric circuit in circuit of windscreen wiper drive of windscreen wiper system, involves parking wiper in predetermined parking position, and opening electric circuit after wiper is parked |
| CN103078576A (en) * | 2013-02-16 | 2013-05-01 | 黄宇嵩 | Direct-current motor pulse width type stepless speed adjuster |
| CN203580889U (en) * | 2013-12-17 | 2014-05-07 | 周云侠 | Contactless controller of automobile windscreen wiper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162920A (en) * | 2018-01-09 | 2018-06-15 | 周芸 | Automobile raindrop trigger wiper |
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Application publication date: 20140312 |