CN202708270U - Electromagnetic valve control circuit - Google Patents

Electromagnetic valve control circuit Download PDF

Info

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
Authority
CN
China
Prior art keywords
solenoid valve
connects
current
limiting resistance
control circuit
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn - After Issue
Application number
CN 201220373254
Other languages
Chinese (zh)
Inventor
金鑫
陈彬
王书潜
高冰
李洛伟
邵顺平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Hanwei Electronics Co Ltd
Original Assignee
Henan Hanwei Electronics Co Ltd
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.)
Filing date
Publication date
Application filed by Henan Hanwei Electronics Co Ltd filed Critical Henan Hanwei Electronics Co Ltd
Priority to CN 201220373254 priority Critical patent/CN202708270U/en
Application granted granted Critical
Publication of CN202708270U publication Critical patent/CN202708270U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

Links

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

Solenoid valve control circuit
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.
CN 201220373254 2012-07-31 2012-07-31 Electromagnetic valve control circuit Withdrawn - After Issue CN202708270U (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN104976408A (en) * 2015-07-20 2015-10-14 杨迎龙 Electromagnetic valve control circuit and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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

Similar Documents

Publication Publication Date Title
CN102777666B (en) Electromagnetic valve control circuit and electromagnetic valve closing self-checking method thereof
CN102777665B (en) Solenoid valve control circuit and solenoid valve switch-in self-checking method thereof
CN202708270U (en) Electromagnetic valve control circuit
CN201689129U (en) Power-down detecting device
CN203811739U (en) Phase-to-ground fault detection apparatus
CN204290268U (en) A kind of protective circuit
CN103983836B (en) Electric energy meter full decompression detection method
CN203166499U (en) IGBT overvoltage protection circuit of electromagnetic oven
CN203287421U (en) Measurement circuit for three-phase AC voltage and current
CN202524069U (en) Reverse-polarity protection circuit
CN203774193U (en) Power-saving type AC contactor applying auxiliary contact
CN206673569U (en) The output protection circuit of Switching Power Supply
CN102768924B (en) Undervoltage tripper with low power consumption and applicable to three-phase supply
CN104577968A (en) Three-phase overvoltage, under-voltage and default phase integrated protection circuit
CN204302368U (en) Over-current detection circuit and overcurrent detecting device
CN203951221U (en) A kind of uninterrupted power supply charging circuit
CN203502529U (en) Switching on/of judging circuit of electric leakage reclosure breaker
CN203708096U (en) Power supply protection circuit and power supply
CN203261001U (en) Electromagnetic type under-voltage tripping device
CN203377584U (en) Three-phase non-midline phase-lack, undervoltage and overvoltage protection circuit
CN104158245B (en) A kind of lithium battery pack equalizing circuit of composite type and equalization methods
CN204441852U (en) A kind of three-phase overvoltage, under-voltage, phase shortage integrated protective circuit
CN105406522A (en) Pulse type electricity acquiring method of line fault indicator
CN204065374U (en) Novel inverter detection filter unit
CN204224116U (en) A kind of tower crane with power-off stand-by power supply function

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