CN203477549U - Programmable controller-based pulse solenoid valve control circuit - Google Patents
Programmable controller-based pulse solenoid valve control circuit Download PDFInfo
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- CN203477549U CN203477549U CN201320376129.3U CN201320376129U CN203477549U CN 203477549 U CN203477549 U CN 203477549U CN 201320376129 U CN201320376129 U CN 201320376129U CN 203477549 U CN203477549 U CN 203477549U
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- solenoid valve
- double
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- electromagnetic valve
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Abstract
The utility model discloses a programmable controller-based pulse solenoid valve control circuit. The programmable controller-based pulse solenoid valve control circuit comprises a power off protection circuit, a single chip microcomputer capable of generating a control pulse signal and a positive pulse signal, a double-pole double-throw relay of which the two movable contacts are serially connected with the output of the positive pulse signal, and an electronic switch connected with the output of the control pulse signal and controlled to actuate a double-pole double-throw switch, wherein a normally opened contact at the anode side and a normally closed contact at the cathode side of the double-pole double-throw rely are respectively communicated with the anode of a pulse solenoid valve; a normally closed contact at the cathode side and a normally opened contact at the anode side of the double-pole double-throw relay are respectively communicated with the cathode of the pulse solenoid valve. The dual-action control of one positive pulse output on the pulse solenoid valve can be realized by using the reversed pulse function of the double-pole double-throw relay, the circuit design is simplified, the solenoid valve can be conveniently replaced based on the existing design, the cost is low, the corresponding improvement is small, and the implementation is easy.
Description
Technical field
The utility model relates to Electrical Control Technology field, particularly relates to a kind of pulse electromagnetic valve control circuit based on programmable controller.
Background technique
In automation is controlled, as washing machine, dishwasher etc., solenoid valve is widely used, and general solenoid valve generally adopts civil power or industrial electro now, and the electric current electromagnetic wire packet generation magnetic field of flowing through, inhales movable valve plug, realizes and closes or open.In working procedure, electromagnetic wire bag is switched on for a long time, very easily produces high temperature and even burns line bag and cause the accident; In the environment of high temperature, humidity, general solenoid valve more easily breaks down and leaks electricity; When short of electricity or power failure, general solenoid valve can not be worked, if adopt other power supplys, because general solenoid valve power consumption is large, has especially the series of problems such as power supply supply, circuit installation.
Than general solenoid valve, impulse electromagnetic valve is with its plurality of advantages replacement of solenoid valve progressively, and the advantage of impulse electromagnetic valve has:
1, energy-conservation, sentinel valve required pulse voltage 12V, pulse width 80ms, 2.88 watts of instantaneous powers.And for MFJ0-3 type AC solenoid for valve, 310 watts of its starting powers, 45 watts of holding powers.Take 1 minute as an operation cycle calculating, the energy loss-rate of sentinel valve and alternating current electromagnetic valve is 1:11178.
2, low noise, sentinel valve only has small noise when connecting or cutting out, and alternating current electromagnetic valve has lasting larger buzz while connecting.
3, heating hardly, sentinel valve generates heat hardly, and control circuit board heating value is also very little.And alternating current electromagnetic valve is because voltage is high, power is large, its electromagnet and control circuit board at work all can persistent fevers.
Although some electrical equipment, as the automatic washing machine control circuit with single-chip microcomputer to the control circuit output of solenoid valve be 12V direct current, energising solenoid valve is opened; Power-off closed electromagnetic valve, but this solenoid valve still needs lasting electric current output, and it is still very high that energy consumption is compared impulse electromagnetic valve, if utilize the control of chip microcontroller paired pulses solenoid valve to become urgent problem.
Model utility content
The purpose of this utility model is for the technological deficiency existing in prior art, and provide a kind of simple in structure, control the stable pulse electromagnetic valve control circuit based on programmable controller.
For realizing the technological scheme that the purpose of this utility model adopts, be:
A kind of pulse electromagnetic valve control circuit based on programmable controller, comprise power-off protecting circuit, can produce the single-chip microcomputer of control wave and positive pulse signal, the dpdt relay that two movable contacts are connected with described positive pulse signal output, export with described control wave the electronic switch that is connected and can controlledly makes double-pole-double-throw switch action, wherein, the normally opened contact of the side of the positive electrode of described dpdt relay and the normally-closed contact of negative side are communicated with the positive pole of impulse electromagnetic valve respectively, the normally-closed contact of the negative side of described dpdt relay and the normally opened contact of side of the positive electrode are communicated with the negative pole of impulse electromagnetic valve respectively.
Described electronic switch comprises the first capacitor C 1, the second capacitor C 2, switching transistor T1, the first resistance R
bwith the second resistance R
c, after source series the first capacitor C 1 of described switching transistor T1, be connected the first described resistance R with the control impuls output of single-chip microcomputer
bone end is connected with positive source, the other end accesses between the first capacitor C 1 and source electrode, after the gate pole series resistors Rc of described switching transistor T1, be connected with positive source, simultaneously, the gate pole of the described switching transistor ground connection after the coil of the second capacitor C 2 and described dpdt relay of also connecting successively, the grounded drain of described switching transistor.
As required a controlling method for the pulse electromagnetic valve control circuit as described in 1, comprise the following steps,
1) control wave of single-chip microcomputer output is opened it and drives double-pole-double-throw switch action that described impulse electromagnetic valve is communicated with the positive pulse signal output terminal short time forward of single-chip microcomputer to electronic switch;
2) single-chip microcomputer is at least exported two positive pulse control signal driving pulse solenoid valves unlatchings;
3) when needs are closed impulse electromagnetic valve, Single-chip Controlling electronic switch cuts out so that impulse electromagnetic valve is oppositely communicated with the positive pulse signal output terminal of single-chip microcomputer, then at least two positive pulse driving pulse closed electromagnetic valves of single-chip microcomputer output.
Also comprise that single-chip microcomputer cuts out electronic switch so that impulse electromagnetic valve is oppositely communicated with the positive pulse signal output terminal of single-chip microcomputer and power-off protecting circuit is exported the step of at least two positive pulse driving pulse closed electromagnetic valves by single-chip microcomputer when prominent chance has a power failure.
After being also included in energising, single-chip microcomputer sends at least two positive pulses to guarantee the initial step of cutting out of sentinel valve by relay to sentinel valve at once.
Compared with prior art, the beneficial effects of the utility model are:
The utility model utilizes the pulse reverse function of dpdt relay, can realize two action controls of a positive pulse output paired pulses solenoid valve, simplified circuit design, simultaneously also solenoid valve is changed in existing design easily, cost is low and corresponding improvement is little, be easy to realize, can effectively realize the advantage of impulse electromagnetic valve.
Accompanying drawing explanation
Figure 1 shows that control circuit solenoid valve unlatching immediate current of the present utility model flows to schematic diagram;
Figure 2 shows that control circuit closed electromagnetic valve immediate current of the present utility model flows to schematic diagram;
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As Fig. 1, shown in 2, the pulse electromagnetic valve control circuit of the utility model based on programmable controller comprises power-off protecting circuit, can produce the single-chip microcomputer of control wave and positive pulse signal, the dpdt relay that two movable contacts are connected with described positive pulse signal output, export with described control wave the electronic switch that is connected and can controlledly makes double-pole-double-throw switch action, wherein, the normally opened contact of the side of the positive electrode of described dpdt relay and the normally-closed contact of negative side are communicated with the positive pole of impulse electromagnetic valve respectively, the normally-closed contact of the negative side of described dpdt relay and the normally opened contact of side of the positive electrode are communicated with the negative pole of impulse electromagnetic valve respectively.Wherein, described power-off protecting circuit can adopt prior art, and the design as existing automatic washing machine, does not repeat them here.For single-chip microcomputer, can use disposable type, as long as carry out the object that simple programming can realize the utility model.If the electric energy allowance of power-off protecting circuit is not enough, shunt capacitance or increase former electric capacity on the electric capacity of the original power-off protecting circuit of washing machine.
Utilize the pulse reverse function of dpdt relay, can realize two action controls of a positive pulse output paired pulses solenoid valve, simplified circuit design, simultaneously also solenoid valve is changed in existing design easily, cost is low and corresponding improvement is little, be easy to realize, can effectively realize the advantage of impulse electromagnetic valve.
As preferred version, described electronic switch comprises the first capacitor C 1, the second capacitor C 2, switching transistor T1, the first resistance R
bwith the second resistance R
c, after source series the first capacitor C 1 of described switching transistor T1, be connected the first described resistance R with the control impuls output of single-chip microcomputer
bone end is connected with positive source (Ucc), the other end accesses between the first capacitor C 1 and source electrode, after the gate pole series resistors Rc of described switching transistor T1, be connected with positive source, simultaneously, the gate pole of the described switching transistor ground connection after the coil of the second capacitor C 2 and described dpdt relay of also connecting successively, the grounded drain of described switching transistor.The electronic switching circuit that the utility model adopts is simple in structure, ripe, because can only directly exporting one, single-chip microcomputer continues in short-term 5V voltage, so can realize the actuating of relay by electronic switching circuit, need 12V (approximately 1-2 second) continuous voltage in short-term, then complete pulse output.
Wherein, impulse electromagnetic valve working principle: impulse electromagnetic valve is comprised of electromagnetic coil, permanent magnet, valve rod, spring, spool and valve body etc.Its effect is under the effect of pulse signal, to control the break-make of current.When direct impulse signal is inputted, cancel out each other in the magnetic field of electromagnetic coil and permanent magnet, and valve rod promotes valve core movement under spring-force driven dual, close port; When reverse impulse signal is inputted, the magnetic field of electromagnetic coil and permanent magnet superposes mutually, and valve rod sucks back spool under magnetic force, opens valve port.Valve rod, after valve port opens or closes, remains on and opens or closes position under the magnetic force of permanent magnet.
Pulse electromagnetic valve control circuit working procedure of the present utility model is as follows:
1) as shown in Figure 1, control wave of single-chip microcomputer output is opened it and drives double-pole-double-throw switch action that described impulse electromagnetic valve is communicated with the positive pulse signal output terminal short time forward of single-chip microcomputer to electronic switch;
2) single-chip microcomputer is at least exported two positive pulse control signal driving pulse solenoid valves unlatchings;
3) as shown in Figure 2, when needs are closed impulse electromagnetic valve, Single-chip Controlling electronic switch cuts out so that impulse electromagnetic valve is oppositely communicated with the positive pulse signal output terminal of single-chip microcomputer, then at least two positive pulse driving pulse closed electromagnetic valves of single-chip microcomputer output.
As preferred version; also comprise that single-chip microcomputer cuts out electronic switch so that impulse electromagnetic valve is oppositely communicated with the positive pulse signal output terminal of single-chip microcomputer and power-off protecting circuit is exported the step of at least two positive pulse driving pulse closed electromagnetic valves by single-chip microcomputer when prominent chance has a power failure; utilize the power-off that existing power-off protecting circuit can simple realization impulse electromagnetic valve to close, improved the Security that solenoid valve uses.
As preferred version, after being also included in energising, single-chip microcomputer sends at least two positive pulses to guarantee the initial step of cutting out of sentinel valve by relay to sentinel valve at once, in start, is that paired pulses solenoid valve self-checking type is closed and further promoted especially its stability in use.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. the pulse electromagnetic valve control circuit based on programmable controller, it is characterized in that, comprise power-off protecting circuit, can produce the single-chip microcomputer of control wave and positive pulse signal, the dpdt relay that two movable contacts are connected with described positive pulse signal output, export with described control wave the electronic switch that is connected and can controlledly makes double-pole-double-throw switch action, wherein, the normally opened contact of the side of the positive electrode of described dpdt relay and the normally-closed contact of negative side are communicated with the positive pole of impulse electromagnetic valve respectively, the normally-closed contact of the negative side of described dpdt relay and the normally opened contact of side of the positive electrode are communicated with the negative pole of impulse electromagnetic valve respectively.
2. pulse electromagnetic valve control circuit as claimed in claim 1, is characterized in that, described electronic switch comprises the first capacitor C 1, the second capacitor C 2, switching transistor T1, the first resistance R
bwith the second resistance R
c, after source series the first capacitor C 1 of described switching transistor T1, be connected the first described resistance R with the control impuls output of single-chip microcomputer
bone end is connected with positive source, the other end accesses between the first capacitor C 1 and source electrode, after the gate pole series resistors Rc of described switching transistor T1, be connected with positive source, simultaneously, the gate pole of the described switching transistor ground connection after the coil of the second capacitor C 2 and described dpdt relay of also connecting successively, the grounded drain of described switching transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376129.3U CN203477549U (en) | 2013-06-26 | 2013-06-26 | Programmable controller-based pulse solenoid valve control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320376129.3U CN203477549U (en) | 2013-06-26 | 2013-06-26 | Programmable controller-based pulse solenoid valve control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203477549U true CN203477549U (en) | 2014-03-12 |
Family
ID=50225880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320376129.3U Withdrawn - After Issue CN203477549U (en) | 2013-06-26 | 2013-06-26 | Programmable controller-based pulse solenoid valve control circuit |
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| CN (1) | CN203477549U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292008A (en) * | 2013-06-26 | 2013-09-11 | 中国人民解放军军事交通学院 | Pulse electromagnetic valve control circuit based on programmable controller and control method of the pulse electromagnetic valve control circuit |
| CN107461540A (en) * | 2017-09-12 | 2017-12-12 | 广东粤电靖海发电有限公司 | A kind of high row's ventilation valve control system of million power generator turbines |
-
2013
- 2013-06-26 CN CN201320376129.3U patent/CN203477549U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292008A (en) * | 2013-06-26 | 2013-09-11 | 中国人民解放军军事交通学院 | Pulse electromagnetic valve control circuit based on programmable controller and control method of the pulse electromagnetic valve control circuit |
| CN103292008B (en) * | 2013-06-26 | 2015-03-11 | 中国人民解放军军事交通学院 | Pulse electromagnetic valve control circuit based on programmable controller and control method of the pulse electromagnetic valve control circuit |
| CN107461540A (en) * | 2017-09-12 | 2017-12-12 | 广东粤电靖海发电有限公司 | A kind of high row's ventilation valve control system of million power generator turbines |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20150311 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |