CN203670981U - Direct current electromagnetic valve control circuit - Google Patents
Direct current electromagnetic valve control circuit Download PDFInfo
- Publication number
- CN203670981U CN203670981U CN201320878544.9U CN201320878544U CN203670981U CN 203670981 U CN203670981 U CN 203670981U CN 201320878544 U CN201320878544 U CN 201320878544U CN 203670981 U CN203670981 U CN 203670981U
- Authority
- CN
- China
- Prior art keywords
- pin
- resistance
- diode
- circuit
- voltage
- 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- Withdrawn - After Issue
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model provides a direct current electromagnetic valve control circuit which has the dual-redundancy opening function, can keep in low-current hysteresis and can be quickly switched off. The dual-redundancy control technology is adopted, the direct current electromagnetic valve control circuit comprises a monostable self-opening drive circuit with the fixed pulse width and a detection and control drive circuit based on current signals, and it can be guaranteed that an electromagnetic valve is reliably opened. The direct current electromagnetic valve control circuit is high in universality, and can be widely applied to a civil or military industrial system which has high requirements for electromagnetic valve control power consumption and response time.
Description
Technical field
The utility model relates to a kind of control circuit for direct-current electromagnetic valve in Analogous Integrated Electronic Circuits.
Background technique
Control circuit for direct-current electromagnetic valve, in petrochemical industry pipeline control system, especially has in the pipeline control of requirement of explosion proof, use very extensive, in military project system, also widely use.Existing solenoid valve control circuit has two large classes, and a class is controlled as the I/O module by PLC, adds peripheral circuit form by solid-state relay or transistor, completes the break-make of solenoid valve.Another kind of in order to improve circuit, inside has increased and has fallen voltage link, after solenoid valve normal pressure energising set time, reduces to low pressure to solenoid valve.
Existing two kinds of control circuits are voltage control mode, cannot accurately control electromagnetic valve current, because after the long-time energising of solenoid valve, can cause electromagnetic valve body heating, it is large that winding resistance value becomes, and steady-state current diminishes, the even solder joint situation such as come off, and useless power consumption is very large.General without accelerating loop circuit, pass, the closed electromagnetic valve time is longer.Though what have has increased accelerated release in vitro loop, the counterelectromotive force of coil is very high to the reliability requirement of driving tube.Under this background, development and design a kind of pair of redundancy open, low current sluggishness relatively maintains, the solenoid valve control circuit that turn-offs fast.
Model utility content
The purpose of this utility model is to provide a kind of control circuit for direct-current electromagnetic valve, has the advantages that two redundancies are opened, low current sluggishness relatively maintains, turn-off fast.
The technical solution of the utility model is: a kind of control circuit for direct-current electromagnetic valve, comprise pulsewidth time circuit, two redundant drive circuit, reference voltage circuit, current sampling, amplification and comparison circuit and accelerated release in vitro loop, it is characterized in that pulsewidth time circuit comprises time base circuit D2 and peripheral circuit, wherein resistance R 1 in parallel with diode V101 after, one end is connected with capacitor C 1, access 2 pin of time base circuit D2 simultaneously, 4 pin of the other end and time base circuit D2, one end of 8 pin and resistance R 2 connects, 7 pin of resistance R 2 the other ends and time base circuit D2, one end of 6 pin and capacitor C 2 connects, the other end of capacitor C 1 and C2 is connected with GND,
Two redundant drive circuit comprise PNP triode V1 and P-channel field-effect transistor (PEFT) pipe V3 and peripheral resistance and diode, wherein the positive pole of diode V102 is connected with 3 pin of time base circuit D2, the negative pole of diode V102 is connected with the negative pole of diode V105 and one end of resistance R 3, 2 pin of triode V1 respectively with resistance R 3, one end of R17 connects, 3 pin of triode V1 are connected with resistance R 5 one end, the other end of resistance R 17, 1 pin of triode V1 is all connected with GND, 1 pin of field effect transistor V3 and resistance R 4, the positive pole of R5 and reference diode V2 connects, 2 pin of field effect transistor V3 are connected with the positive pole of reference diode V6, the other end of 3 pin of field effect transistor V3, the negative pole of reference diode V2, resistance R 4 is all connected with VIN,
Reference voltage circuit comprises voltage-reference diode V4 and peripheral resistance, electric capacity, diode.The negative pole of reference diode V103 is connected with VIN end, positive pole is connected with one end of resistance R 6,1 pin of voltage-reference diode V4 is connected with the other end of resistance R 6, the R7 of the 8 pin difference contact resistances of voltage-reference diode V4, one end of R8, one end access+5V end of 1 pin, resistance R 7, R101 and the capacitor C 3 of voltage-reference diode V4, the other end access GND end of 6 pin, resistance R 8, R102 and the capacitor C 3 of voltage-reference diode V4, resistance R 101 is exported reference data voltage U r with the connecting end of R102;
Current sampling, amplification and comparison circuit comprise double operational D3A, D3B and voltage comparator D1 and peripheral diode and resistance, the two ends of resistance R 15 are connected with 2 pin, 1 pin of double operational D3A respectively, the two ends of resistance R 14 are connected with 3 pin and the GND end of double operational D3A respectively, sample resistance R16 one end is connected with R13, the other end is connected with resistance R 12 and DRV-, 3 pin of double operational D3A and 2 pin are distinguished the other end of contact resistance R12 and R13, have formed sampling and the differential amplifier circuit of electric current; 1 pin of double operational D3A and 5 pin of D3B are connected, and between 6 pin of double operational D3B and 7 pin, access resistance R 103, complete following of voltage; 3 pin of voltage comparator D1 are connected with 7 pin of double operational D3B by resistance R 106,7 pin of voltage comparator D1 are connected with the positive pole of resistance R 107, diode V105, the negative pole of diode V104 respectively, 2 pin of voltage comparator D1 access Ur end by resistance R 104,1 pin, 4 pin of voltage comparator D1 are connected with GND end, simultaneously access+5V of one end end of 8 pin of voltage comparator D1 and resistance R 107;
Accelerated release in vitro loop comprises N channel field-effect pipe V10, diode V6, V7, V8 and V9, resistance R 9, R10 and capacitor C 4, in parallel with capacitor C 4 after resistance R 9 and R10 series connection, parallel connected end accesses respectively VIN and GND end, 1 pin of field effect transistor V10 is connected with the common port of resistance R 9 and R10,3 pin of field effect transistor V10 are connected with the positive pole of diode V7,2 pin of field effect transistor V10 are connected with the negative pole of reference diode V9, and the negative pole of fly-wheel diode V8 is connected with the negative pole of reference diode V6 and diode V7 respectively.
This control circuit for direct-current electromagnetic valve has adopted two the technique on redundant control, and a kind of for the fixing monostable of pulsewidth is from opening drive circuit, one is to detect and control drive circuit based on current signal, guarantees that solenoid valve reliably opens.Adopt the sluggish relatively holding circuit of more novel low current, guarantee to keep low power consumption to maintain in solenoid valve is in certain Current Zone, reduce the energy consumption of solenoid valve; Adopt efficient succinct quick breaking circuit, made the turn-off time of solenoid valve shorten 20～30ms, eliminated the impact of counterelectromotive force on control interface simultaneously.
This circuit highly versatile, can be widely used in the system that civilian, military project etc. has higher requirements to electromagnetic valve power consumption and response time.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, this solenoid valve control circuit is mainly made up of pulsewidth time circuit, two redundant drive circuit, reference voltage circuit, current sampling, amplification and comparison circuit and accelerated release in vitro loop etc.
Pulsewidth time circuit is mainly made up of time base circuit D2NE555 and peripheral circuit.After resistance R 1 is in parallel with diode V101, one end is connected with capacitor C 1, accesses 2 pin of time base circuit D2 simultaneously, and the other end is connected with one end of 4 pin, 8 pin and the resistance R 2 of time base circuit D2.Resistance R 2 the other ends are connected with one end of 7 pin, 6 pin and the capacitor C 2 of time base circuit D2.Capacitor C 1, the other end of C2 is connected with GND.Mainly complete in the time that circuit powers on, at the fixing high level signal of 3 pin output pulse width of D2.
Two redundant drive main circuits will be made up of resistance and the diode of PNP triode V1 and P-channel field-effect transistor (PEFT) pipe V3 and periphery.Diode V102 is anodal to be connected with 3 pin of time base circuit D2, the negative pole of negative pole and diode V105, and one end of resistance R 3 connects.2 pin of triode V1 are connected with one end of resistance R 3, R17 respectively, and 3 pin of triode V1 are connected with resistance R 5 one end.The other end of resistance R 17,1 pin of triode V1 are all connected with GND.1 pin of field effect transistor V3 and resistance R 4, the positive pole of R5 and reference diode V2 connects, and 2 pin of field effect transistor V3 are connected with the positive pole of reference diode V6; The other end of 3 pin of field effect transistor V3, the negative pole of reference diode V2, resistance R 4 is all connected with VIN.Two redundant drive main circuits will complete while no matter being diode V102 or diode V105 output high level, guarantee that triode V1 is on state, thereby guarantee field effect transistor V3 conducting output solenoid valve driving voltage.
Reference voltage circuit is mainly made up of voltage-reference diode V4 and peripheral resistance, electric capacity, diode.The negative pole of reference diode V103 is connected with VIN end, and positive pole is connected with one end of resistance R 6.1 pin of voltage-reference diode V4 is connected with the other end of resistance R 6, the R7 of the 8 pin difference contact resistances of voltage-reference diode V4, one end of R8.Resistance R 101 is connected with R102, connecting end output reference data voltage U r.One end access+5V end of 1 pin, resistance R 7, R101 and the capacitor C 3 of voltage-reference diode V4.The other end access GND end of 6 pin, resistance R 8, R102 and the capacitor C 3 of voltage-reference diode V4.Reference voltage circuit mainly produce+5V operating voltage and reference data voltage U r.
Current sampling, amplification and comparison circuit are mainly made up of diode and the resistance of double operational D3 and voltage comparator D1 and periphery.The two ends of resistance R 15 are connected with 2 pin, 1 pin of double operational D3A respectively, the two ends of resistance R 14 are connected with 3 pin and the GND end of double operational D3A respectively, sample resistance R16 one end is connected with resistance R 13, the other end is connected with resistance R 12 and DRV-, 3 pin of double operational D3A and 2 pin are the other end of contact resistance R12, R13 respectively, has formed sampling and the differential amplifier circuit of electric current.1 pin of double operational D3A and 5 pin of D3B are connected, and between 6 pin of double operational D3B and 7 pin, access resistance R 103, complete following of voltage.3 pin of voltage comparator D1 are connected with 7 pin of double operational D3B by resistance R 106,7 pin of voltage comparator D1 are connected with the positive pole of resistance R 107, diode V105, the negative pole of diode V104 respectively, 2 pin of voltage comparator D1 access Ur end by resistance R 104,1 pin, 4 pin of voltage comparator D1 are connected with GND end, simultaneously access+5V of one end end of 8 pin of voltage comparator D1 and resistance R 107.Current sampling, amplification and comparison circuit mainly complete the sampling of line solenoid valve loop current, differential amplification and the comparison driver output with reference data voltage U r.
Accelerated release in vitro loop is mainly by N channel field-effect pipe V10, diode V6, V7, V8, V9, and resistance R 9, R10 and capacitor C 4 form.In parallel with capacitor C 4 after resistance R 9, R10 series connection, VIN and GND end are accessed respectively in two ends.1 pin of field effect transistor V10 is connected with the common port of resistance R 9, R10, and 3 pin of field effect transistor V10 are connected with the positive pole of diode V7, and 2 pin of field effect transistor V10 are connected with the negative pole of reference diode V9.The negative pole of fly-wheel diode V8 is connected with the negative pole of reference diode V6 and diode V7 respectively.Accelerated release in vitro loop mainly completes the acceleration decay of line solenoid valve loop current, accelerates to turn-off thereby solenoid valve is realized.
Primary Component type selecting and parameter
It is LM311 that voltage comparator D1 selects model
LM311 voltage comparator design and operation is at wider supply voltage: from standard ± 15V operational amplifier to single 5V power supply for logical integrated circuit.It exports compatible RTL, DTL and TTL with MOS circuit.
Basic parameter
● comparator-type: general
● the response time: 200ns
● source current: 5.1mA
● pin number: 8
It is LM555/LM555C that time base circuit D2 selects model.
LM555/LM555C series is the time base circuit of National Semiconductor.It can, for selecting, be to use a kind of universal integrated circuit very widely that the each large intergrated circuit manufacturer in China and the world all has like product.LM555/LM555C series function is powerful, use is flexible, Applicable scope is wide, can be used to generation time and postpones and multiple pulse signal, is widely used in various electronic products.
Basic parameter
● timing is from Microsecond grade to a hour level.
● can work in without stable state and two kinds of modes of monostable.
● capable of regulating dutycycle.
● output terminal can receive and provide 200mA electric current.
● output voltage and Transistor-Transistor Logic level compatibility.
● temperature stability is better than 0.005%/℃.
It is LM358 that dual operational amplifier D3 selects model
LM358 inside include two independently, the dual operational amplifier of high gain, internal frequency compensation, being suitable for the very wide single supply of supply voltage scope uses, also be applicable to double-power source mode of operation, under the operating conditions of recommending, source current and independent of power voltage.Its using scope comprises the occasion of the use operational amplifier of sensor amplifier, DC current gain module and other all available single power supplies.
Basic parameter
● VDC gain high (about 100dB)
● unit gain Bandwidth (about 1MHz)
● supply voltage wide ranges: single supply (3～30V)
● double-power source (± 1.5～± 15V)
● low power consumption current, is suitable for powered battery
● common-mode input voltage range is wide, comprises ground connection
● differential-mode input voltage wide ranges, equals supply voltage scope
● output voltage swing large (0 to Vcc-1.5V).
It is TL431 that precision voltage regulator V4 selects model
TL431 is controllable accurate source of stable pressure.Its output voltage just can be set to from Verf(2.5V arbitrarily with two resistance) to any value within the scope of 36V.The exemplary dynamic impedance of this device is 0.2 Ω, in a lot of application, replaces reference diode with it, for example, and digital voltmeter, discharge circuit, pressure-adjustable power supply, switch power etc.
Basic parameter
● output voltage able to programme: 2.5V～36V
● Voltage Reference error: ± 0.4%, 25 ℃ of representative value@(TL431B)
● low dynamic output impedance: 0.22 Ω (representative value)
● operating temperature range is fully determined in temperature correction operation
● 1.0～100 milliamperes of load currents.
● within the scope of total temperature, temperature characteristic is smooth, and representative value is 50ppm/ ℃,
● maximum input voltage is 37V
● maximum operating currenbt 150mA
● internal reference voltage is 2.495V (25 ℃).
It should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technological scheme that still can record previous embodiment is modified, or part technical characteristics is wherein replaced on an equal basis.
All within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (1)
1. a control circuit for direct-current electromagnetic valve, comprise pulsewidth time circuit, two redundant drive circuit, reference voltage circuit, current sampling, amplification and comparison circuit and accelerated release in vitro loop, it is characterized in that pulsewidth time circuit comprises time base circuit D2 and peripheral circuit, wherein resistance R 1 in parallel with diode V101 after, one end is connected with capacitor C 1, access 2 pin of time base circuit D2 simultaneously, 4 pin of the other end and time base circuit D2, one end of 8 pin and resistance R 2 connects, 7 pin of resistance R 2 the other ends and time base circuit D2, one end of 6 pin and capacitor C 2 connects, the other end of capacitor C 1 and C2 is connected with GND,
Two redundant drive circuit comprise PNP triode V1 and P-channel field-effect transistor (PEFT) pipe V3 and peripheral resistance and diode, wherein the positive pole of diode V102 is connected with 3 pin of time base circuit D2, the negative pole of diode V102 is connected with the negative pole of diode V105 and one end of resistance R 3, 2 pin of triode V1 respectively with resistance R 3, one end of R17 connects, 3 pin of triode V1 are connected with resistance R 5 one end, the other end of resistance R 17, 1 pin of triode V1 is all connected with GND, 1 pin of field effect transistor V3 and resistance R 4, the positive pole of R5 and reference diode V2 connects, 2 pin of field effect transistor V3 are connected with the positive pole of reference diode V6, the other end of 3 pin of field effect transistor V3, the negative pole of reference diode V2, resistance R 4 is all connected with VIN,
Reference voltage circuit comprises voltage-reference diode V4 and peripheral resistance, electric capacity, diode, the negative pole of reference diode V103 is connected with VIN end, positive pole is connected with one end of resistance R 6, 1 pin of voltage-reference diode V4 is connected with the other end of resistance R 6, 8 pin of the voltage-reference diode V4 R7 of contact resistance respectively, one end of R8, 1 pin of voltage-reference diode V4, resistance R 7, one end access+5V end of R101 and capacitor C 3, 6 pin of voltage-reference diode V4, resistance R 8, the other end access GND end of R102 and capacitor C 3, resistance R 101 is exported reference data voltage U r with the connecting end of R102,
Current sampling, amplification and comparison circuit comprise double operational D3A, D3B and voltage comparator D1 and peripheral diode and resistance, the two ends of resistance R 15 are connected with 2 pin, 1 pin of double operational D3A respectively, the two ends of resistance R 14 are connected with 3 pin and the GND end of double operational D3A respectively, sample resistance R16 one end is connected with R13, the other end is connected with resistance R 12 and DRV-, 3 pin of double operational D3A and 2 pin are distinguished the other end of contact resistance R12 and R13, have formed sampling and the differential amplifier circuit of electric current; 1 pin of double operational D3A and 5 pin of D3B are connected, and between 6 pin of double operational D3B and 7 pin, access resistance R 103, complete following of voltage; 3 pin of voltage comparator D1 are connected with 7 pin of double operational D3B by resistance R 106,7 pin of voltage comparator D1 are connected with the positive pole of resistance R 107, diode V105, the negative pole of diode V104 respectively, 2 pin of voltage comparator D1 access Ur end by resistance R 104,1 pin, 4 pin of voltage comparator D1 are connected with GND end, simultaneously access+5V of one end end of 8 pin of voltage comparator D1 and resistance R 107;
Accelerated release in vitro loop comprises N channel field-effect pipe V10, diode V6, V7, V8 and V9, resistance R 9, R10 and capacitor C 4, in parallel with capacitor C 4 after resistance R 9 and R10 series connection, parallel connected end accesses respectively VIN and GND end, 1 pin of field effect transistor V10 is connected with the common port of resistance R 9 and R10,3 pin of field effect transistor V10 are connected with the positive pole of diode V7,2 pin of field effect transistor V10 are connected with the negative pole of reference diode V9, and the negative pole of fly-wheel diode V8 is connected with the negative pole of reference diode V6 and diode V7 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320878544.9U CN203670981U (en) | 2013-12-27 | 2013-12-27 | Direct current electromagnetic valve control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320878544.9U CN203670981U (en) | 2013-12-27 | 2013-12-27 | Direct current electromagnetic valve control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670981U true CN203670981U (en) | 2014-06-25 |
Family
ID=50967277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320878544.9U Withdrawn - After Issue CN203670981U (en) | 2013-12-27 | 2013-12-27 | Direct current electromagnetic valve control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670981U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727289A (en) * | 2013-12-27 | 2014-04-16 | 西安航天远征流体控制股份有限公司 | Direct-current electromagnetic valve control circuit |
| CN106439172A (en) * | 2016-11-25 | 2017-02-22 | 合肥协力液压科技有限公司 | Hydraulic valve control device |
| CN113677058A (en) * | 2021-08-26 | 2021-11-19 | 横店集团得邦照明股份有限公司 | Light-adjusting control device for light-emitting diode lighting product and implementation method thereof |
-
2013
- 2013-12-27 CN CN201320878544.9U patent/CN203670981U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727289A (en) * | 2013-12-27 | 2014-04-16 | 西安航天远征流体控制股份有限公司 | Direct-current electromagnetic valve control circuit |
| CN106439172A (en) * | 2016-11-25 | 2017-02-22 | 合肥协力液压科技有限公司 | Hydraulic valve control device |
| CN113677058A (en) * | 2021-08-26 | 2021-11-19 | 横店集团得邦照明股份有限公司 | Light-adjusting control device for light-emitting diode lighting product and implementation method thereof |
| CN113677058B (en) * | 2021-08-26 | 2024-05-07 | 横店集团得邦照明股份有限公司 | Light-emitting diode lighting product dimming control device and implementation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10855072B2 (en) | Intelligent safety relay and circuit applied thereby | |
| US8710819B2 (en) | Low offset, fast response voltage controlled current source and controlling method thereof | |
| US7859816B2 (en) | Bistable contactor drive circuit | |
| TWI529511B (en) | Voltage regulator | |
| CN104638882B (en) | Signal level transfer circuit and DC-DC decompression conversion control circuit | |
| CN110943718B (en) | Output stage circuit of high-side switch | |
| CN103727289B (en) | A kind of control circuit for direct-current electromagnetic valve | |
| CN203572931U (en) | Detection feedback circuit | |
| CN203670981U (en) | Direct current electromagnetic valve control circuit | |
| US8228114B1 (en) | Normally-off D-mode driven direct drive cascode | |
| CN104135237B (en) | Gate driving circuit | |
| CN107872212A (en) | Control method, Power switching devices and switching device | |
| CN104137418B (en) | On-off circuit | |
| CN107359608A (en) | A kind of direct current prevents reversed protection circuit | |
| CN104065273B (en) | A kind of line voltage compensation circuit driven for constant-current LED | |
| US11860243B2 (en) | Plug status detection circuit, controller, and vehicle | |
| CN103872906B (en) | The control device and method of communication power supply | |
| CN203981744U (en) | Motor positive and inverse detects control circuit | |
| US10170258B2 (en) | Method for controlling a change of operating state of an electromechanical component and corresponding device | |
| CN204068708U (en) | A kind of line voltage compensation circuit driven for constant-current LED | |
| CN205753352U (en) | Servo-driver dual power supply low pressure sync detection circuit | |
| CN213846532U (en) | MOSFET/IGBT driving chip double protection circuit based on optical coupling isolation | |
| CN102694535B (en) | Structure for automatically regulating power consumption according to load condition | |
| CN109586709A (en) | A kind of pwm signal isolation and transmission circuit | |
| CN206146994U (en) | Self -adaption sampling circuit, controller and power supply changeover device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140625 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |