CN106704671A - Control circuit capable of controlling alternating current electromagnetic valve by two-way direct current - Google Patents
Control circuit capable of controlling alternating current electromagnetic valve by two-way direct current Download PDFInfo
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- CN106704671A CN106704671A CN201710016089.4A CN201710016089A CN106704671A CN 106704671 A CN106704671 A CN 106704671A CN 201710016089 A CN201710016089 A CN 201710016089A CN 106704671 A CN106704671 A CN 106704671A
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- control circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Relay Circuits (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a control circuit capable of controlling an alternating current electromagnetic valve by a two-way direct current. The control circuit comprises a live line control circuit, a zero line control circuit and an alternating current electromagnetic valve power detection circuit, wherein a pin P0.8 of a microcontroller is connected with one end of a control circuit resistor R43, and the other end of the control circuit resistor R43 is connected in parallel with a diode D10 and a capacitor C23, so that the current of the pin P0.8 of the microcontroller is controlled, and the current is stabilized; and after power is supplied, alternating currents L1 and N1 which are conducted are detected by an alternating current optocoupler U13 of a detection circuit. The circuit disclosed by the invention not only is provided with an electromagnetic relay, but also is provided with a solid-state relay, so that dual protection is achieved, and the reliability is high; and besides, the detection circuit is arranged, so that the connection situation of the electromagnetic valve can be detected. The control circuit disclosed by the invention has the characteristics of being simple in structure, safe to control, long in operating time, reasonable in price, and the like.
Description
Technical field
The present invention relates to alternating current electromagnetic valve control circuit field, specifically a kind of two-way direct current control alternating current electromagnetic valve control
Circuit.
Background technology
The industrial control to alternating current electromagnetic valve at present is most to use single channel power supply, i.e., with solid-state relay or electromagnetism
The live wire or zero line of Control alternating current.But traditional electromagnetic relay can produce electric arc in adhesive and when disconnecting,
Electromagnetic interference can be caused to neighbouring electronic equipment, it is easily aging using contact for a long time, the problems such as cause loose contact, when serious
May lead to a disaster；Solid-state relay can solve arcing problems, but general pressure-resistant relatively low, and when opening and closing, electromagnetic valve coil is produced
Back-emf be easy to solid-state relay to puncture；A.C. contactor is no electric arc also no pressure-resistant problem, but price is high
It is expensive, and volume is larger, is not suitable for applying on circuit boards.
So, the design have developed a kind of two-way direct current control alternating electromagnetic valve controling circuit, this circuit in this context
With simple structure, control safety, use time is long, the advantages of reasonable price.
The content of the invention
It is an object of the invention to provide a kind of two-way direct current control alternating electromagnetic valve controling circuit, to solve above-mentioned background
The problem proposed in technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of two-way direct current controls alternating electromagnetic valve controling circuit, including fiery line control circuit, zero line control circuit, alternating electromagnetic
Valve leads to power detection circuit；The microcontroller pin P0.8 is connected with one end of control circuitous resistance R43；The current-limiting resistance
The other end of R43 is in parallel with diode D10 and electric capacity C23, acts on the electric current of limitation microcontroller pin P0.8, makes electric current steady
It is fixed；The other end of the diode D10 is connected with 1 pin of triode Q7, and acting on prevents the electric current of triode Q7 from flowing into micro-control
Device pin P0.8 processed；One end of the filter resistance R44 is connected with 1 pin of triode Q7, and the other end is connected to the ground, and acts on filter
Voltage release when being closed except triode Q7 between base stage and emitter stage；2 pin of the triode Q7 are connected to the ground, and act on micro-
The opening and closing of the small voltage control relay K1 of controller pin P0.8；The other end of the diode D9 and 12V direct currents
Power supply is connected, and acts on when relay K1 is opened and closed and filters peak voltage；4 pin of the relay K1 and 12V direct currents
Source is connected, and acts on using 12V DC voltage control 220V alternating voltages, using 12V direct current electromagnetic relays；The 12V is straight
Stream power supply is connected with 4 pin of relay K1, acts on offer relay K1 operating voltages；
The other end of the diode D3 is connected with filter resistance R38 and triode Q6, acts on the conducting for preventing triode Q6
Voltage enters microcontroller pin P0.9；The other end of the filter resistance R38 is connected to the ground, and acts on and filters triode Q6 passes
Voltage release when closing between base stage and emitter stage；2 pins of the triode Q6 are connected to the ground, 3 pins and solid-state relay
3 pins of device U11 are connected, and act on being turned on and off for control solid-state relay U11；One end of the pull-up resistor R39 with
2 pins of solid-state relay U11 are connected, and the other end is connected with dc source VDD3.3V, act on protection solid-state relay U11
Input current stabilization；6 pins of the solid-state relay U11 are connected with 220V AC power zero lines N, and 8 pins are steady with transient state
One end of pressure diode D1 is connected, and acts on the alternating current that small voltage direct current controls big voltage；The filter capacitor C24's is another
One end is connected with 220V AC power zero lines N, acts on and filters the peak voltage that solid-state relay U11 is opened and closed moment.
As further scheme of the invention：If solenoid valve interface P9 does not connect magnetic valve, microcontroller pin P0.29 by
In the leakage current of exchange optocoupler U13, normal VDD3.3V voltages can be less than；And P9 connects magnetic valve, exchange optocoupler U13 does not leak
Electric current, microcontroller pin P0.29 is normal VDD3.3V high level；So magnetic valve can be judged according to the level voltage of P0.29
Either with or without connecting.
Compared with prior art, the beneficial effects of the invention are as follows：Circuit of the present invention does not only have electromagnetic relay, also solid-state
Relay duplicate protection, reliability is high, while there is detection circuit, can detect the access situation of magnetic valve, with structure letter
Single, control safety, use time is long, the features such as reasonable price.
Brief description of the drawings
Fig. 1 is two-way direct current control alternating electromagnetic valve controling circuit live wire control circuit theory diagrams；
Fig. 2 is two-way direct current control alternating electromagnetic valve controling circuit zero line control circuit theory diagrams；
Fig. 3 is alternating current electromagnetic valve energization detection circuit theory diagrams.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of two-way direct current controls alternating electromagnetic valve controling circuit, and specific implementation step is as follows：
As shown in figure 1, two-way direct current control alternating electromagnetic valve controling circuit live wire control circuit theory diagrams include microcontroller
Pin P0.8, control circuit, load circuit；It is characterized in that：The microcontroller pin P0.8 and control circuitous resistance R43
One end connection, it is described control circuit include current-limiting resistance R43, diode D10, filter capacitor C23, filter resistance R44, three poles
Pipe Q7, diode D9, relay K1,12V dc source；Wherein, the other end of the current-limiting resistance R43 and diode D10 and
Electric capacity C23 is in parallel；The other end of the diode D10 is connected with 1 pin of triode Q7, acts on the electric current for preventing triode Q7
Flow into microcontroller pin P0.8；One end of the filter resistance R44 is connected with 1 pin of triode Q7, and the other end is connected to the ground；
2 pin of the triode Q7 are connected to the ground, act on microcontroller pin P0.8 small voltage control relay K1 unlatching and
Close；3 pin of the triode Q7 are in parallel with one end of 5 pin of relay K1 and diode D9；The diode D9's is another
End is connected with 12V dc sources, acts on when relay K1 is opened and closed and filters peak voltage；4 pin of the relay K1
It is connected with 12V dc sources；The 12V dc sources are connected with 4 pin of relay K1, act on offer relay K1 work electricity
Pressure；The load circuit includes 220V AC power live wires L, filter resistance R49, filter capacitor C24, solenoid valve interface P9, filter
Power supply L1 and filtered power supply N1 after ripple；Wherein, 1 pin of the 220V AC powers live wire L and relay K1 and filtering
Resistance R49 is in parallel；The other end of the filter resistance R49 is connected with one end of filter capacitor C24；The filter capacitor C24's
The other end is in parallel with 3 pin of relay K1 and 2 pin of solenoid valve interface P9；Electricity after 2 pin of the solenoid valve interface P9 and filtering
Source L1 is connected, and 1 pin is connected with power supply N1 after filtering.
As shown in Fig. 2 two-way direct current control alternating electromagnetic valve controling circuit zero line control circuit theory diagrams include micro-control
Device pin P0.9 processed, control circuit, load circuit；It is characterized in that：The microcontroller pin P0.9 and control circuitous resistance
One end of R37 is connected；The control circuit includes resistance R37, filter capacitor C17, diode D3, filter resistance R38, triode
Q6, pull-up resistor R39, dc source VDD3.3V and solid-state relay U11；The other end and filter capacitor of the resistance R37
C17 and diode D3 is in parallel；The other end of the filter capacitor C17 is connected to the ground；The other end of the diode D3 and filtering
Resistance R38 is connected with triode Q6, and acting on prevents the conducting voltage of triode Q6 from entering microcontroller pin P0.9；The filter
The other end of ripple resistance R38 is connected to the ground, and acts on the voltage release filtered when triode Q6 is closed between base stage and emitter stage；
2 pins of the triode Q6 are connected to the ground, and 3 pins are connected with 3 pins of solid-state relay U11, act on control solid-state
Relay U11's is turned on and off；One end of the pull-up resistor R39 is connected with 2 pins of solid-state relay U11, the other end
It is connected with dc source VDD3.3V, acts on the input current stabilization of protection solid-state relay U11；The solid-state relay U11
6 pins be connected with 220V AC power zero lines N, 8 pins are connected with one end of transient state voltage-regulator diode D1, act on small voltage
Direct current controls the alternating current of big voltage；The load circuit include 220V AC power zero lines N, transient state voltage-regulator diode D1,
Filter resistance R41, filter capacitor C24, filtered power supply N1；Wherein, the 220V AC powers zero line N and solid-state relay
6 pins of U11 are connected；One end of the transient state voltage-regulator diode D1 is connected with 220V AC power zero lines N, the other end with filtering
Power supply N1 afterwards is connected；One end of the filter resistance R41 is connected with filtered power supply N1, the other end and filter capacitor C24
It is connected；The other end of the filter capacitor C24 is connected with 220V AC power zero lines N, acts on and filters solid-state relay U11 and open
Close the peak voltage of moment.
As shown in figure 3, the alternating current electromagnetic valve is powered, detection circuit theory diagrams include filtered power supply N1, filtered electricity
Source L1, current-limiting resistance R46, filter capacitor C1, exchange optocoupler U13, dc source VDD3.3, pull-up resistor R47, resistance R48, electricity
Hold C2, triode Q8, electric capacity C5；It is characterized in that：The filtered power supply N1 is connected with one end of filter capacitor C1；Institute
Filtered power supply L1 is stated to be connected with one end of current-limiting resistance R46；The other end of the current-limiting resistance R46 with exchange optocoupler U13
1 pin be connected；The other end of the filter capacitor C1 is connected with 2 pins for exchanging optocoupler U13；The 3 of the exchange optocoupler U13
Pin is connected with one end of electric capacity C2, and 4 pins are connected with one end of pull-up resistor R47, acts on 220V alternating currents and 3.3V
Direct current is electrically insulated；The dc source VDD3.3 is connected with one end of pull-up resistor R47 and is connected；The pull-up resistor R47's
The other end is connected with microcontroller pin P0.29；One end of the resistance R48 and 3 pins and electric capacity C2 for exchanging optocoupler U13
One end phase simultaneously connects, and the other end is connected with 1 pin of triode Q8；One end of the electric capacity C2 and the 3 pin phases for exchanging optocoupler U13
Even, the other end is connected to the ground；2 pins of the triode Q8 are connected to the ground, and 3 pins are connected with microcontroller pin P0.29；Institute
The one end for stating electric capacity C5 is connected to the ground, and the other end is connected with microcontroller pin P0.29.
The control process of integrated circuit is：
When microcontroller pin P0.8 is high level, triode Q7 conductings, relay K1 conductings, 220V AC power live wires L leads
It is logical；When microcontroller pin P0.9 is high level, triode Q6 conductings, solid-state relay U11 conductings, 220V AC powers N leads
It is logical；Now solenoid valve interface P9 has the 220V alternating currents of stabilization, and magnetic valve can be normally-open；The U13 inspections of detection circuit AC optocoupler
The alternating current L1 and N1 after conducting are measured, optocoupler conducting, triode Q8 conductings drag down VDD3.3, now, are transferred to microcontroller
Device pin P0.29 low level signals；And P0.8 or P0.9 only one of which be high level or all be low level when, solenoid valve interface P9
The 220V alternating currents all do not stablized, magnetic valve cisco unity malfunction；Detection electric circuit inspection is less than stable alternating current, P0.29
It is VDD3.3V high level.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires to be limited rather than described above, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (3)
1. a kind of two-way direct current controls alternating electromagnetic valve controling circuit, including fiery line control circuit and zero line control circuit, and it is special
Levy and be, the fiery line control circuit includes current-limiting resistance R43, filter resistance R44, diode D10 and electric capacity C23, current limliting electricity
The one end for hindering R43 connects the P0.8 pins of microcontroller, and the other end of current-limiting resistance R43 is with diode D10 and electric capacity C23 simultaneously
Connection, the other end of the diode D10 is connected with 1 pin of triode Q7, one end of filter resistance R44 and 1 pin of triode Q7
It is connected, the other end is connected to the ground, and 2 pin of triode Q7 are connected to the ground, and the other end of diode D9 is connected with 12V dc sources,
4 pin of relay K1 are connected with 12V dc sources；12V dc sources are connected with 4 pin of relay K1；
Zero line control circuit includes diode D3, filter resistance R38 and triode Q6, one end connection resistance of diode D3
The other end of R37 and electric capacity C17, resistance R37 connects the P0.9 pins of microcontroller, the other end and filter resistance of diode D3
R38 is connected with 1 pin of triode Q6, and the other end of filter resistance R38 is connected to the ground, and 2 pins of triode Q6 are connected to the ground,
3 pins of triode Q6 are connected with 3 pins of solid-state relay U11, one end of pull-up resistor R39 and the 2 of solid-state relay U11
Pin is connected, and the other end is connected with dc source VDD3.3V, 6 pins and the 220V AC power zero lines N of solid-state relay U11
It is connected, 8 pins are connected with one end of transient state voltage-regulator diode D1.
2. two-way direct current according to claim 1 controls alternating electromagnetic valve controling circuit, it is characterised in that also including exchange
Solenoid valves detect circuit, and the logical power detection circuit of alternating current electromagnetic valve includes resistance R47, triode Q8 and exchanges optocoupler U13, hands over
The connection electric capacity C1 of pin 2 of pin 1 the connection resistance R46, exchange optocoupler U13 of streamer coupling U13, the pin 3 of exchange optocoupler U13 connects
Electric capacity C2 and resistance R48, the connection resistance R47 of pin 4 of exchange optocoupler U13 are met, the other end connecting triode Q8's of resistance R47
The P0.29 pins of colelctor electrode, electric capacity C5 and microcontroller.
3. two-way direct current according to claim 1 controls alternating electromagnetic valve controling circuit, it is characterised in that the relay
K1 is 12V direct current electromagnetic relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016089.4A CN106704671B (en) | 2017-01-10 | 2017-01-10 | A kind of two-way direct current control alternating electromagnetic valve controling circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016089.4A CN106704671B (en) | 2017-01-10 | 2017-01-10 | A kind of two-way direct current control alternating electromagnetic valve controling circuit |
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| CN106704671A true CN106704671A (en) | 2017-05-24 |
| CN106704671B CN106704671B (en) | 2019-01-04 |
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| CN201710016089.4A Active CN106704671B (en) | 2017-01-10 | 2017-01-10 | A kind of two-way direct current control alternating electromagnetic valve controling circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945456A (en) * | 2019-03-06 | 2019-06-28 | 广东美的制冷设备有限公司 | Air conditioner washing module control circuit, method and air conditioner |
| CN113552432A (en) * | 2021-07-16 | 2021-10-26 | 四川久远智能消防设备有限责任公司 | Electromagnetic valve, manipulator multiplexing control and online detection circuit and detection method thereof |
| CN113745059A (en) * | 2021-09-03 | 2021-12-03 | 国营芜湖机械厂 | PWM relay control circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945456A (en) * | 2019-03-06 | 2019-06-28 | 广东美的制冷设备有限公司 | Air conditioner washing module control circuit, method and air conditioner |
| CN113552432A (en) * | 2021-07-16 | 2021-10-26 | 四川久远智能消防设备有限责任公司 | Electromagnetic valve, manipulator multiplexing control and online detection circuit and detection method thereof |
| CN113745059A (en) * | 2021-09-03 | 2021-12-03 | 国营芜湖机械厂 | PWM relay control circuit |
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| Publication number | Publication date |
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| CN106704671B (en) | 2019-01-04 |
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Effective date of registration: 20190708 Address after: Room 202-176, 668 Shenzhuan Highway, Songjiang High-tech Park, Caohejing Development Zone, Shanghai, 2000 Patentee after: Shanghai Sai Fu Intelligent Technology Co., Ltd. Address before: 201900 South District, 1607 Shitai Road, Baoshan District, Shanghai Patentee before: Shanghai Sai Fu Security Science Co., Ltd |
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