CN202708270U - Electromagnetic valve control circuit - Google Patents
Electromagnetic valve control circuit Download PDFInfo
- Publication number
- CN202708270U CN202708270U CN 201220373254 CN201220373254U CN202708270U CN 202708270 U CN202708270 U CN 202708270U CN 201220373254 CN201220373254 CN 201220373254 CN 201220373254 U CN201220373254 U CN 201220373254U CN 202708270 U CN202708270 U CN 202708270U
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- Prior art keywords
- solenoid valve
- connects
- current
- limiting resistance
- control circuit
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- Withdrawn - After Issue
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Abstract
The utility model provides an electromagnetic valve control circuit. The electromagnetic valve control circuit comprises an electromagnetic valve circuit and a partial pressure sampling circuit, wherein the electromagnetic valve circuit consists of a microprocessor circuit, an electromagnetic valve DC, a triode Q1, a polarity capacitor C1, a current-limiting resistor R1 and a current-limiting resistor R4, the partial pressure sampling circuit consists of a partial pressure resistor R2 and a sampling resistor R3, and an analog-to-digital conversion input end of the microprocessor circuit is connected with one end of the sampling resistor R3. The electromagnetic valve control circuit has the advantages of being scientific in design, simple in structure, high in safety and stable in performance.
Description
Technical field
The utility model relates to a kind of control circuit, specifically, has related to a kind of solenoid valve control circuit.
Background technique
At present, the domestic gas prober of selling on the market, the product of part model is with the gas solenoid valve linkage control device, although the type product can realize closing gas interlock control, product itself does not all have to detect detection device or the method whether solenoid valve effectively connects or whether effectively close; Solenoid valve is connected on prober the corresponding interface, meeting shut electromagnetic valve during detector alarm, and still, in product used, can have following situation unavoidably: solenoid valve did not connect, and sends the Signal Fail of shut electromagnetic valve when causing detector alarm; Perhaps, during detector alarm, although send the signal of shut electromagnetic valve, the solenoid valve valve is caused solenoid valve not close by foreign matters from being blocked.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, thereby the solenoid valve control circuit of a kind of design science, simple in structure, safe, stable performance is provided.
To achieve these goals, the technological scheme that the utility model adopts is: a kind of solenoid valve control circuit, and it comprises microcontroller circuit, solenoid valve DC, triode Q1, polar capacitor C1, current-limiting resistance R1, current-limiting resistance R4, divider resistance R2 and sampling resistor R3; Wherein, described current-limiting resistance R1 one end is used for connecting DC electrical source, and the described current-limiting resistance R1 the other end connects coil one end of described solenoid valve DC, and the coil the other end of described solenoid valve DC connects the collector electrode of described triode, the grounded-emitter connection of described triode; The described current-limiting resistance R1 the other end connects the positive pole of described polar capacitor C1, the minus earth of described polar capacitor C1; The described current-limiting resistance R1 the other end connects described divider resistance R2 one end, and the described divider resistance R2 the other end connects described sampling resistor R3 one end, described sampling resistor R3 the other end ground connection; Described microcontroller circuit includes microprocessor U1, and the electromagnetic valve end of described microprocessor U1 connects described current-limiting resistance R4 one end, and the described current-limiting resistance R4 the other end connects the base stage of described triode Q1; The analog-to-digital conversion input end of described microprocessor U1 connects described sampling resistor R3 one end.
Based on above-mentioned, it also comprises diode D1, and the negative pole of described diode D1 connects coil one end of described solenoid valve DC, and the positive pole of described diode D1 connects the coil the other end of described solenoid valve DC.
The relative prior art of the utility model has substantive distinguishing features and progress, specifically, this solenoid valve control circuit is on the basis of existing solenoid valve control circuit, increased voltage sampling circuit, and only take an analog-to-digital conversion input port resource of microprocessor, can realize self check that whether solenoid valve is effectively connected, it has the advantage of design science, simple in structure, safe, stable performance.
Description of drawings
Fig. 1 is the structural representation of solenoid valve control circuit described in the utility model.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As shown in Figure 1, a kind of solenoid valve control circuit, it comprises microcontroller circuit, solenoid valve DC, diode D1, triode Q1, polar capacitor C1, current-limiting resistance R1, current-limiting resistance R4, divider resistance R2 and sampling resistor R3.
Wherein, described current-limiting resistance R1 one end is used for connecting DC electrical source VCC, the described current-limiting resistance R1 the other end connects coil one end of described solenoid valve DC, and the coil the other end of described solenoid valve DC connects the collector electrode of described triode, the grounded-emitter connection of described triode; The negative pole of described diode D1 connects coil one end of described solenoid valve DC, and the positive pole of described diode D1 connects the coil the other end of described solenoid valve DC.
The selection of DC electrical source VCC is selected according to solenoid valve dc voltage parameter, is generally DC36V or DC24V or DC12V or DC9V; When triode Q1 turn-offed, diode D1 had the afterflow effect, and the high pressure counterelectromotive force that produces when preventing solenoid valve DC outage damages circuit devcie; Triode Q1 is used for control solenoid valve DC conducting and closes, and the parameter of triode Q1 is selected according to the specification requirement of solenoid valve DC driving current.
The described current-limiting resistance R1 the other end connects the positive pole of described polar capacitor C1, the minus earth of described polar capacitor C1.Current-limiting resistance R1 is the required current-limiting resistance of polar capacitor C1; The withstand voltage parameter of the electric capacity of polar capacitor C1 is selected according to DC electrical source VCC, and the selection of capacitor's capacity is selected according to the specification requirement of solenoid valve DC driving current.
The described current-limiting resistance R1 the other end connects described divider resistance R2 one end, and the described divider resistance R2 the other end connects described sampling resistor R3 one end, described sampling resistor R3 the other end ground connection.Divider resistance R2 and sampling resistor R3 form pressure sampling circuit, and the resistance size of divider resistance R2 and sampling resistor R3 is selected according to the input voltage range that the analog-to-digital conversion input end of DC electrical source VCC and microprocessor U1 allows.
Described microcontroller circuit includes microprocessor U1, and the solenoid valve DC control end of described microprocessor U1 connects described current-limiting resistance R4 one end, and the described current-limiting resistance R4 the other end connects the base stage of described triode Q1; Current-limiting resistance R4 is triode Q1 base stage current-limiting resistance; The analog-to-digital conversion input end of described microprocessor U1 connects described sampling resistor R3 one end.
A kind of solenoid valve access self checking method of solenoid valve control circuit, the method may further comprise the steps:
Step 1, microprocessor U1 work on power, and output low level control triode Q1 disconnects, and gathers the voltage at sampling resistor R3 two ends, is recorded as sampled voltage V1;
Step 2, microprocessor U1 output high level control triode Q1 conducting, and time-delay from the output high level, delay time is T1, then, microprocessor U1 gathers the voltage at sampling resistor R3 two ends again, and is recorded as sampled voltage V2;
Wherein, delay time T1 is not more than the actual act time T of solenoid valve DC and is not less than the ON time of triode Q1, specifically selects according to solenoid valve DC, triode Q1 specifications parameter; For example, delay time T1 is 10ms; In other words, when high level output, triode Q1 can conducting, but solenoid valve DC can not close;
Step 3, microprocessor U1 deduct sampled voltage V2 with sampled voltage V1, obtain difference V0, if-aV1≤V0≤aV1, illustrate that then solenoid valve DC fails to access solenoid valve control circuit, otherwise, illustrate that then solenoid valve DC has accessed solenoid valve control circuit, wherein, a is predefined value.In other words, if sampled voltage V1 and sampled voltage V2 are more or less the same, illustrate that then solenoid valve DC fails to access solenoid valve control circuit, otherwise, illustrate that then solenoid valve DC has accessed solenoid valve control circuit.
In the present embodiment, a value is zero, and then: microprocessor U1 compares sampled voltage V1 and sampled voltage V2, if the two difference illustrates that then solenoid valve DC has accessed solenoid valve control circuit, otherwise, illustrate that then solenoid valve DC fails to access solenoid valve control circuit.
Choosing of a value size specifically need to be determined according to the specifications parameter of each electric elements that solenoid valve control circuit adopts; Of particular note, in other embodiments, a value also can be other numerical value.
This solenoid valve access self checking method uses the fundamental characteristics of solenoid valve control circuit dexterously, has realized the self check whether solenoid valve effectively connects, its have occupying system resources few, be easy to realize, advantage that cost is low, simple and practical.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characteristics is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope that the utility model asks for protection.
Claims (2)
1. solenoid valve control circuit, it is characterized in that: it comprises microcontroller circuit, solenoid valve DC, triode Q1, polar capacitor C1, current-limiting resistance R1, current-limiting resistance R4, divider resistance R2 and sampling resistor R3; Wherein, described current-limiting resistance R1 one end is used for connecting DC electrical source, and the described current-limiting resistance R1 the other end connects coil one end of described solenoid valve DC, and the coil the other end of described solenoid valve DC connects the collector electrode of described triode, the grounded-emitter connection of described triode; The described current-limiting resistance R1 the other end connects the positive pole of described polar capacitor C1, the minus earth of described polar capacitor C1; The described current-limiting resistance R1 the other end connects described divider resistance R2 one end, and the described divider resistance R2 the other end connects described sampling resistor R3 one end, described sampling resistor R3 the other end ground connection; Described microcontroller circuit includes microprocessor U1, and the electromagnetic valve end of described microprocessor U1 connects described current-limiting resistance R4 one end, and the described current-limiting resistance R4 the other end connects the base stage of described triode Q1; The analog-to-digital conversion input end of described microprocessor U1 connects described sampling resistor R3 one end.
2. solenoid valve control circuit according to claim 1, it is characterized in that: it also comprises diode D1, and the negative pole of described diode D1 connects coil one end of described solenoid valve DC, and the positive pole of described diode D1 connects the coil the other end of described solenoid valve DC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373254 CN202708270U (en) | 2012-07-31 | 2012-07-31 | Electromagnetic valve control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373254 CN202708270U (en) | 2012-07-31 | 2012-07-31 | Electromagnetic valve control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708270U true CN202708270U (en) | 2013-01-30 |
Family
ID=47588576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220373254 Withdrawn - After Issue CN202708270U (en) | 2012-07-31 | 2012-07-31 | Electromagnetic valve control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708270U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777665A (en) * | 2012-07-31 | 2012-11-14 | 河南汉威电子股份有限公司 | Solenoid valve control circuit and solenoid valve switch-in self-checking method thereof |
| CN102777666A (en) * | 2012-07-31 | 2012-11-14 | 河南汉威电子股份有限公司 | Electromagnetic valve control circuit and electromagnetic valve closing self-checking method thereof |
| CN104976408A (en) * | 2015-07-20 | 2015-10-14 | 杨迎龙 | Electromagnetic valve control circuit and method |
-
2012
- 2012-07-31 CN CN 201220373254 patent/CN202708270U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777665A (en) * | 2012-07-31 | 2012-11-14 | 河南汉威电子股份有限公司 | Solenoid valve control circuit and solenoid valve switch-in self-checking method thereof |
| CN102777666A (en) * | 2012-07-31 | 2012-11-14 | 河南汉威电子股份有限公司 | Electromagnetic valve control circuit and electromagnetic valve closing self-checking method thereof |
| CN102777666B (en) * | 2012-07-31 | 2014-04-16 | 河南汉威电子股份有限公司 | Electromagnetic valve control circuit and electromagnetic valve closing self-checking method thereof |
| CN102777665B (en) * | 2012-07-31 | 2014-04-16 | 河南汉威电子股份有限公司 | Solenoid valve control circuit and solenoid valve switch-in self-checking method thereof |
| CN104976408A (en) * | 2015-07-20 | 2015-10-14 | 杨迎龙 | Electromagnetic valve control circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20140416 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20140416 |
|
| RGAV | Abandon patent right to avoid regrant |