CN110324031A - A kind of control circuit of nitrogen supply (NS) system and solenoid valve - Google Patents
A kind of control circuit of nitrogen supply (NS) system and solenoid valve Download PDFInfo
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- CN110324031A CN110324031A CN201910603336.XA CN201910603336A CN110324031A CN 110324031 A CN110324031 A CN 110324031A CN 201910603336 A CN201910603336 A CN 201910603336A CN 110324031 A CN110324031 A CN 110324031A
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- load
- control circuit
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 267
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 131
- 238000002474 experimental method Methods 0.000 claims abstract description 37
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 2
- 102100030393 G-patch domain and KOW motifs-containing protein Human genes 0.000 description 31
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 31
- 101150090280 MOS1 gene Proteins 0.000 description 30
- 101100401568 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MIC10 gene Proteins 0.000 description 30
- 230000005611 electricity Effects 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 101100478187 Arabidopsis thaliana MOS4 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 101100461812 Arabidopsis thaliana NUP96 gene Proteins 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/90—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of galvano-magnetic devices, e.g. Hall-effect devices
Abstract
This application discloses a kind of nitrogen supply (NS) system and the control circuit of solenoid valve, control circuit includes power supply, load, switch unit, the first transistor, second transistor and solenoid valve.Wherein, the first end of load connects to power supply；The second end of load is connect with switch unit, switch unit ground connection；Power supply, the first transistor and second transistor are sequentially connected, and the third end connection of the first transistor and load, second transistor is connect with the 4th end of load；Solenoid valve is connect with second transistor, when switch unit is in the conductive state, the first transistor is connected when both end voltage is greater than itself conducting voltage respectively with second transistor, power supply, the first transistor, second transistor and solenoid valve is set to form access, so that solenoid valve is generated electromagnetic field, controls opening or closing for solenoid valve.The control circuit improves the safety of nitrogen supply (NS) system, can stablize, be reliably scientific experiment load the supply of nitrogen.
Description
Technical field
This application involves electronic circuit field more particularly to the control circuits of a kind of nitrogen supply (NS) system and solenoid valve.
Background technique
In space research, numerous space science researchs and the progress of Space Experiments need various resources.For example, nitrogen
Gas.In Space Experiments, nitrogen is the essential resource maintaining the experiment in scientific experiment load and being normally carried out, nitrogen
Steady supply also directly influences the development of Space Experiments and goes on smoothly.Wherein, scientific experiment load is referred to for carrying out
The equipment of Space Experiments.
In nitrogen supply (NS) system, equipment of the solenoid valve as control nitrogen cut-off and circulation, safety and reliability
Considerable effect is played during nitrogen supply (NS).
Therefore, how to realize one kind and can stablize, be reliably scientific experiment load the supply of nitrogen, and be able to achieve automatic control
The nitrogen supply (NS) system of system and the control circuit of the solenoid valve in nitrogen supply (NS) system are major issues urgently to be resolved.
Summary of the invention
The embodiment of the present application provides the control circuit of a kind of nitrogen supply (NS) system and solenoid valve, can be realized stablize, can
It is scientific experiment load the supply of nitrogen by ground.
A kind of control circuit of solenoid valve provided by the embodiments of the present application, including power supply, load, switch unit, the first crystalline substance
Body pipe, second transistor and solenoid valve；Wherein, the first end of the load connects to power supply；The second end of the load with
The switch unit connection, the switch unit ground connection；The power supply, the first transistor and second transistor are sequentially connected,
The first transistor is also connect with the third end of the load, and the second transistor also connects with the 4th end of the load
It connects；The solenoid valve is connect with the second transistor, when the switch unit is in the conductive state, the first transistor
Be connected respectively when both end voltage is greater than itself conducting voltage with the second transistor, make the power supply, the first transistor,
Second transistor and solenoid valve form access, and then the solenoid valve is made to generate electromagnetic field, thus control solenoid valve unlatching or
It closes.
A kind of nitrogen supply (NS) system provided by the embodiments of the present application, comprising:
Cylinder package, the cylinder package are carried for storing high pressure nitrogen and the high pressure nitrogen being decompressed to scientific experiment
Nitrogen needed for lotus；
Transfer pipeline, the transfer pipeline are connect with the cylinder package, for the nitrogen to be delivered to the science
Test load；The transfer pipeline includes multiple solenoid valves, and each solenoid valve is connected with two control circuits respectively, described two
Control circuit is respectively used to the opening and closing of the solenoid valve of control connection；
Host is controlled, the control host is connect with multiple control circuits, and the control host is according to the nitrogen
Nitrogen amount needed for the data of flow sensor and the preset scientific experiment load in supply system, to the control electricity
Road sends nitrogen supply (NS) and controls signal, opens or closes the solenoid valve of the control circuit connection, and then controls the supply of nitrogen；
Wherein, the control circuit includes power supply, load, switch unit, the first transistor, second transistor, solenoid valve；
The first end of the load is connect with the power supply；The second end of the load is connect with the switch unit, and the switch is single
Member ground connection；The power supply, the first transistor and second transistor are sequentially connected, the first transistor also with the load
The connection of third end, the second transistor are also connect with the 4th end of the load；The solenoid valve and the second transistor
Connection, when the switch unit is in the conductive state, the first transistor and the second transistor are respectively in both ends electricity
Pressure is connected when being greater than the conducting voltage of itself, and the power supply, the first transistor, second transistor and solenoid valve is made to form access,
And then the solenoid valve is made to generate electromagnetic field, to control opening or closing for the solenoid valve of connection.
The embodiment of the present application provides the control circuit of a kind of nitrogen supply (NS) system and solenoid valve, in nitrogen supply (NS) system
Controlling host can the nitrogen according to needed for the data of flow sensor in nitrogen supply (NS) system and preset scientific experiment load
Amount sends nitrogen supply (NS) to the control circuit of corresponding solenoid valve and controls signal.Control circuit receives nitrogen supply (NS) control letter
After number, access can be formed in control circuit, so that the electromagnetic valve coil of solenoid valve in control circuit is generated magnetic field, so that solenoid valve
It is turned on or off, the circulation of nitrogen is controlled with this.The series design of the first transistor and second transistor, adds in control circuit
The strong safety and reliability of control circuit, supplies to keep nitrogen supply (NS) control system stable to scientific experiment load
Answer nitrogen.Also, improve the degree of automation of nitrogen supply (NS) system.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is a kind of control circuit schematic diagram of solenoid valve provided by the embodiments of the present application；
Fig. 2 is the control circuit schematic diagram of another solenoid valve provided by the embodiments of the present application；
Fig. 3 is nitrogen supply (NS) systematic schematic diagram provided by the embodiments of the present application.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
As shown in Figure 1, the control circuit of solenoid valve includes power supply VCC, load 11, switch unit 12, transistor MOS1, crystalline substance
Body pipe MOS2 and electromagnetic valve coil YV.
In the control circuit, loads 11 first end and connect with power supply VCC；The second end and switch unit 12 of load 11
Connection, switch unit are grounded DGND；Power supply VCC, transistor MOS1 and transistor MOS2 are sequentially connected.Transistor MOS1 also with
The third end connection of load 11, transistor MOS2 are also connect with the 4th end of load 11.Electromagnetic valve coil YV and transistor MOS2
Connection, electromagnetic valve coil YV are also grounded DGND simultaneously.
In one embodiment, transistor MOS1 and transistor MOS2 is PMOS tube.The source electrode of transistor MOS1 connects
Power supply VCC, the third end of grid connection load 11, the source electrode of drain electrode connection transistor MOS2, the grid connection of transistor MOS2
4th end of load 11, drain electrode connection electromagnetic valve coil YV.
In another embodiment, the metal-oxide-semiconductor of included parasitic diode can be used in transistor MOS1 and transistor MOS2.
Wherein, parasitic diode is arranged between the source electrode of metal-oxide-semiconductor and drain electrode, and the moment for generating very big in control circuit is reversed
When electric current, reverse current is exported, to protect metal-oxide-semiconductor not breakdown, reinforces the safety of metal-oxide-semiconductor.
In Fig. 1, after switch unit 12 is connected, power supply VCC and load 11 form access, load 11 first end and third end
Between voltage, that is, both ends transistor MOS1 voltage, when the voltage be greater than transistor MOS1 itself conducting voltage when, crystal
Pipe MOS1 conducting.Similarly, the voltage i.e. voltage at the both ends transistor MOS2 between 11 first end and the 4th end is loaded.When the electricity
When pressure is greater than the conducting voltage of transistor MOS2 itself, transistor MOS2 conducting.
After transistor MOS1 and transistor MOS2 are both turned on, power supply VCC, transistor MOS1, transistor MOS2 and electromagnetism
Valve coil YV can form access, and electromagnetic valve coil YV generates electromagnetic field in the case where energization, the spool being attracted in solenoid valve, from
And opening or closing for solenoid valve can be controlled.
Transistor MOS1 connects with transistor MOS2, can prevent in the case where single transistor short circuit, power supply VCC is straight
Electromagnetic valve coil YV ground connection DGND was connected, so that on or off of the switch unit 12 by itself, controls electromagnetic valve coil
The energization of YV or no power, to control opening or closing for solenoid valve.That is, transistor MOS1 and transistor MOS2 goes here and there
Connection can prevent in the case where single transistor short circuit, and control circuit cannot achieve the control to solenoid valve, and to power supply system
System plays the role of insulation blocking.
Specifically, load 11 may include resistance R1, resistance R2, resistance R3 and resistance R4 in control circuit.Resistance
The first end of R1 is connect with the first end of power supply VCC, transistor MOS1, the second end of resistance R1 and first end, the electricity of resistance R2
First end, the connection of the first end of resistance R4 of R3 are hindered, the second end of resistance R2 is connect with switch unit 12；The second end of resistance R3
It is connect with the second end of transistor MOS1, the second end of resistance R4 is connect with the second end of transistor MOS2.In one embodiment
In, the second end of resistance R3 is connect with the drain electrode of transistor MOS1, and the second end of resistance R4 is connect with the drain electrode of transistor MOS2.
After switch unit 12 is connected, power supply VCC and resistance R1, resistance R2 form access.The first end of resistance R1 and second
Voltage between end is applied to the first end of transistor MOS1 between the first end of resistance R3, when the first end of transistor MOS1
When voltage between second end is greater than the conducting voltage of transistor MOS1 itself, transistor MOS1 conducting.Transistor MOS2 is same
Reason, details are not described herein by the application.
Resistance R1 connects with resistance R2, then, after the conducting of switch unit 12, resistance R1 and resistance R2 can be to power supply VCC
Voltage divided.Therefore, the voltage at the both ends resistance R1 can be determined according to the resistance value size of resistance R1 and resistance R2, thus
Determine the voltage for being respectively applied to transistor MOS1 Yu the both ends transistor MOS2.
Specifically, the control circuit of solenoid valve further includes multiple diode groups 3 interconnected, the diode group 3 is in parallel
At the both ends electromagnetic valve coil YV, the counter electromotive force for preventing electromagnetic valve coil YV from generating is applied in control circuit, is eliminated anti-
Electromotive force, magnetic field energy of releasing play transient state and inhibit protective effect.Wherein, the breakdown voltage of diode group 3 should be greater than power supply
The voltage of VCC.
Further, diode group 3 may include diode D1, diode D2, diode D3 and diode D4.Two poles
After pipe D1 connects with diode D2, it is connected in parallel on the both ends electromagnetic valve coil YV and is also connected in parallel on after diode D3 connects with diode D4
The both ends electromagnetic valve coil YV.
The case where diode D1 connects with diode D2, can prevent single shorted diode；Diode D1, diode D2
It is in parallel with diode D3, diode D4, the case where single channel diode open-circuit can be prevented.In single shorted diode and single channel
In the case where diode open-circuit, diode group 3 can not play the role of eliminating counter electromotive force, then counter electromotive force may be to control electricity
Component in road damages.
Specifically, switch unit 12 may include controller W and triode V1, controller W is connected with triode V1.Control
Device W can control signal based on the nitrogen supply (NS) for controlling host in nitrogen supply (NS) system, and control triode V1 is connected or cuts
Only.
In one embodiment, triode V1 can be NPN type triode.Controller W is connect with the base stage of triode V1,
Load 11 is connect with the collector of triode V1, the emitter ground connection of triode V1.
Controller W receive in nitrogen supply (NS) system control host nitrogen supply (NS) control signal, export high level or
Low level is to triode V1.When controller W exports low level, triode V1 cut-off；When controller W exports high level, three
The voltage of the base stage of pole pipe V1 is higher than the voltage of emitter, triode V1 conducting, and then control circuit is connected, electromagnetic valve coil YV
It is powered and generates electromagnetic field, the spool being attracted in solenoid valve, control solenoid valve is turned on or off.
In one embodiment, nitrogen supply (NS) control signal can be direct current signal.Electricity in nitrogen supply (NS) system
When magnet valve does not have self-locking holding function, controller W enables control circuit to control by persistently exporting high level or low level
Solenoid valve is turned on or off.In another embodiment, nitrogen supply (NS) control signal can be pulse signal.Work as nitrogen
When solenoid valve in supply system has the function of self-locking holding, using the unlatching or management of pulse control solenoid valve, Neng Goujie
Save power.Wherein, the period of the pulse signal can be 80ms.
Wherein, nitrogen supply (NS) system is used for scientific experiment load the supply of nitrogen, and controlling host can be according to nitrogen supply (NS) system
Nitrogen amount needed for the data of flow sensor and preset scientific experiment load in system sends the nitrogen to controller and supplies
Signal should be controlled, the triode ON or cut-off are made, to open or close the solenoid valve, and then controls the supply of nitrogen.
During nitrogen supply (NS), the control host in nitrogen supply (NS) system can be according to needed for preset scientific experiment load
Nitrogen amount, to solenoid valve connect control circuit in controller W send nitrogen supply (NS) control signal.Controller W is according to connecing
Triode V1 is connected in the control signal received, output high level to triode V1.After triode V1 conducting, power supply VCC, electricity
Access is formed between resistance R1 and resistance R2.Transistor MOS1 and transistor MOS2 is led under the action of the voltage at the both ends resistance R1
It is logical, make to form access between power supply VCC, transistor MOS1, transistor MOS2 and electromagnetic valve coil YV.Electromagnetic valve coil YV is generated
Electromagnetic field, the spool being attracted in solenoid valve, opens solenoid valve, nitrogen goes into circulation.Controlling host can be according to nitrogen supply (NS) system
The data for the nitrogen flow flowed through that flow sensor in system monitors and the time of consuming, calculating, which is learnt, to be had been supplied to
The nitrogen amount of scientific experiment load.So, when nitrogen supply (NS) finishes, similarly, the control that control host can be connected to solenoid valve
Controller W in circuit sends nitrogen supply (NS) and controls signal, closes solenoid valve.
Specifically, as shown in Fig. 2, control circuit may include the first sub- control circuit 1 and the second sub- control circuit 2.
First sub- control circuit 1 includes power supply VCC, load 11, switch unit 12, transistor MOS1 and transistor
MOS2, load 11 include resistance R1, resistance R2, resistance R3 and resistance R4.Wherein, the connection relationship of above-mentioned each component is upper
Wen Zhongyi has a detailed description, and details are not described herein for the embodiment of the present application.
Second sub- control circuit 2 may include power supply VCC, load 21, switch unit 22, transistor MOS3 and transistor
MOS4, load 21 include resistance R5, resistance R6, resistance R7 and resistance R8.Wherein, each component in the second sub- control circuit 2
Connection relationship it is identical as the connection relationship of corresponding each component in the first sub- control circuit 1, the embodiment of the present application is herein not
It repeats again.The transistor MOS4 of the sub- control circuit 2 of transistor MOS2 and second of first sub- control circuit 1 respectively with line solenoid valve
Enclose YV connection.
Switch unit 12 is connected, and control circuit can be made to form access, and electromagnetic valve coil YV generates electromagnetic field, controls solenoid valve
Open or close.Switch unit 22 is connected, and control circuit can equally be made to form access, and electromagnetic valve coil YV generates electromagnetic field,
Control solenoid valve opens or closes.That is, the component of the first sub- control circuit 1 and the second sub- control circuit 2 is constituted
Connection relationship between each component is identical, and function is also identical.
First sub- control circuit 1 and the second sub- 2 Parallel Design of control circuit, can prevent in only one sub- control circuit
In the case where, when component failure in circuit, entire control circuit can not form access, and then cause control circuit right
Solenoid valve is controlled.Second sub- control circuit 2 can be used as the backup of the first sub- control circuit 1, in the first sub- control circuit 1
When failure, the conducting of control circuit can be realized by the second sub- control circuit 2, to realize the control to solenoid valve, Neng Goujia
The reliability and security of strong control circuit, guarantees the normal operation of control circuit.
It should be noted that Fig. 2 is that more intuitively the first sub- control circuit 1 of embodiment and the second sub- control circuit 2 are standby each other
The relationship of part, and convenient for description, power supply VCC is embodied in respectively in two sub- control circuits, but substantial first son control
The power supply VCC in the sub- control circuit 2 of power supply VCC and second in circuit 1 is same power supply.Similarly, in the first sub- control circuit 1
The sub- control circuit 2 of controller W and second in controller W be also same controller.
Fig. 3 is nitrogen supply (NS) systematic schematic diagram, as shown in figure 3, nitrogen supply (NS) system includes cylinder package 100, delivery pipe
Road 200, scientific experiment load 300 and control host 400.
Cylinder package 100 is for storing high pressure nitrogen and high pressure nitrogen being decompressed to needed for scientific experiment load 300 works
Nitrogen pressure；Transfer pipeline 200 is connect with cylinder package 100, and the nitrogen for exporting cylinder package 100 is delivered to science
Test load 300；Host 400 is controlled for real according to the data of flow sensor in nitrogen supply (NS) system and preset science
Nitrogen amount needed for testing load 300 controls the unlatching and/or closing of the solenoid valve 290 in transfer pipeline 200, to control nitrogen
Supply.
Wherein, transfer pipeline 200 include multiple solenoid valves 290, each solenoid valve 290 respectively with two control circuit phases
Even, the two control circuits are respectively used to control the opening and closing of the solenoid valve 290.Controlling includes controller in host 400
W, controller W are connect with the control circuit of all solenoid valves 290 in nitrogen supply (NS) system, and control host 400 can be to connection
Control circuit sends nitrogen supply (NS) and controls signal, opens or closes the solenoid valve 290 of control circuit connection, and then control nitrogen
Supply.
Wherein, as shown in Figure 1, control circuit includes power supply VCC, load 11, switch unit 12, transistor MOS1, crystal
Pipe MOS2, electromagnetic valve coil YV；The first end of load 11 is connect with power supply VCC；The second end and switch unit 12 of load 11 connect
It connects, switch unit 12 is grounded；Power supply VCC, transistor MOS1 and transistor MOS2 are sequentially connected, transistor MOS1 also with load
11 third end connection, transistor MOS2 are also connect with the 4th end of load 11；Electromagnetic valve coil YV is connect with transistor MOS2,
When switch unit 12 is in the conductive state, transistor MOS1 and transistor MOS2 are respectively in conducting of the both end voltage greater than itself
It is connected when voltage, so that power supply VCC, transistor MOS1, transistor MOS2 and electromagnetic valve coil YV is formed access, and then make solenoid valve
Coil YV generates electromagnetic field, to control opening or closing for the solenoid valve 290 of connection.
Specifically, transfer pipeline 200 include a road Ge Zong, multiple main roads and multiple branches, total road respectively with multiple masters
Road connection, for each main road, which connect with multiple branches, a branch in each scientific experiment load and multiple branches
Road connection.Main road includes main road solenoid valve 260, and branch includes branch way solenoid valve 280.Main road solenoid valve 260 and branch way solenoid valve
280 connect with two control circuits respectively, the two control circuits are respectively used to control the opening and closing of corresponding solenoid valve.
The nitrogen amount that host 400 can be needed according to preset scientific experiment load 300 is controlled, carries out nitrogen confession to the needs
The control circuit of the corresponding main road solenoid valve 270 of scientific experiment load 300 and branch way solenoid valve 290 answered sends nitrogen supply (NS)
Signal is controlled, so that control circuit is controlled corresponding solenoid valve and opens, start the supply of nitrogen.Later, control host 400 can acquire nitrogen
The data for the nitrogen flow flowed through that bypass flow sensor 290 monitors in gas supply system, determination have been supplied to science
Test the nitrogen amount of load 300.Control the nitrogen amount and that host 400 can be needed according to preset scientific experiment load 300
Through being supplied to the nitrogen amount of scientific experiment load 300, after nitrogen supply (NS), to the corresponding master of scientific experiment load 300
The control circuit of road shut-off valve 270 and branch way solenoid valve 290 sends nitrogen supply (NS) and controls signal, corresponds to control circuit control
Solenoid valve close, to complete nitrogen supply (NS).
In the embodiment of the present application, nitrogen amount and branch that control host can be needed according to preset scientific experiment load
The real-time nitrogen flow data that flow sensor monitors determine the nitrogen amount supplied to scientific experiment load.In nitrogen
After supply, control host, which can automatically determine, closes branch way solenoid valve, to complete nitrogen supply (NS).This improves nitrogen supply (NS) system
The degree of automation of system, also, the design of the control circuit of each solenoid valve also improves the safety and reliability of system, makes nitrogen
Gas supply system can be smoothly to scientific experiment load the supply of nitrogen.
Further, as shown in Fig. 2, the control circuit that main road solenoid valve 260 connects may include the first sub- control circuit 1 with
Second sub- control circuit 2, the first sub- control circuit 1 include power supply VCC, load 11, switch unit 12, transistor MOS1 and crystalline substance
Body pipe MOS2, load 11 include resistance R1, resistance R2, resistance R3 and resistance R4.Wherein, the connection relationship of above-mentioned each component
It has hereinbefore had a detailed description, details are not described herein for the embodiment of the present application.Second sub- control circuit 2 may include power supply VCC, bear
21, switch unit 22, transistor MOS3 and transistor MOS4 are carried, load 21 includes resistance R5, resistance R6, resistance R7 and electricity
Hinder R8.Wherein, corresponding each first device in the connection relationship with the first sub- control circuit 1 of each component in the second sub- control circuit 2
The connection relationship of part is identical, and details are not described herein for the embodiment of the present application.Of the transistor MOS2 of first sub- control circuit 1 and second
The transistor MOS4 of control circuit 2 is connect with electromagnetic valve coil YV respectively.
Main road solenoid valve 260 connect control circuit in include the first sub- control circuit 1 and the second sub- control circuit 2,
In sub- control circuit when breaking down, can realize the control to solenoid valve by another sub- control circuit, increase master
The reliability of way solenoid valve 260 is conducive to the normal operation of nitrogen supply (NS) system.Also, it breaks down in branch way solenoid valve 280
When, the control circulated to nitrogen can also be realized by the control to main road solenoid valve 260.
Wherein, the solenoid valve in nitrogen supply (NS) system use latching valve structure, solenoid valve mainly include spool, permanent magnet,
Shell, valve body etc..Spool and valve body cooperatively form sealing pair, control the circulation of nitrogen.Each solenoid valve connects two control electricity
Road, when control host wants opens solenoid valve, one of control circuit of two control circuits connected to the solenoid valve
It sends nitrogen supply (NS) and controls signal, for the control circuit in conducting, electromagnetic valve coil generates electromagnetic field, to the spool in solenoid valve
Suction is generated, so that spool is changed into open position from original closed position, is opened solenoid valve with this.Also, spool position
After change, by the effect of permanent magnet, current location is locked in certainly, and can maintain for a long time current location in cold situation.
Therefore, when control host is wanted to close solenoid valve, another control for two control circuits that need to be connected to the solenoid valve
Circuit sends nitrogen supply (NS) and controls signal, changes the position of spool again.
In addition, the cylinder package 100 in nitrogen supply (NS) system includes high pressure nitrogen gas cylinder 110, storage pressure sensor
120, pressure reducing valve 130.Wherein, high pressure nitrogen gas cylinder 110 is for storing high pressure nitrogen.Storage pressure sensor 120 is for monitoring
The air pressure for the high pressure nitrogen that high pressure nitrogen gas cylinder 110 exports, and storage pressure sensor 120 is acquired by control host 400 and is monitored
The gas pressure data arrived.The high pressure nitrogen flowed through decompression is met 300 need of work pressure of scientific experiment load by pressure reducing valve 130
The nitrogen of power.
Total road of transfer pipeline 200 includes check valve 210, safety valve 220, total road pressure sensor 230, total road flow biography
Sensor 240, temperature sensor 250.Wherein, check valve 210 is connect with pressure reducing valve 130, and check valve 210 is for guaranteeing from pressure reducing valve
The one-way flow of the nitrogen of 130 outflows.Safety valve 220 is connect with check valve 210, can be greater than default threshold in the nitrogen pressure flowed through
It is opened when value, release is carried out to nitrogen.Total road pressure sensor 230 is connect with safety valve 220, for monitoring from safety valve 220
The pressure of the nitrogen of outflow.Total road flow sensor 240 is connect with total road pressure sensor 230, flows through total road for monitoring
The flow of nitrogen.Temperature sensor 250 is connect with total road flow sensor 240, for monitoring the temperature of the nitrogen flowed through.
The main road of transfer pipeline 200 includes main road shut-off valve 260 and main road pressure sensor 270.Wherein, main road ends
Valve 260 is used under the control of control host 400, controls the on-off of the nitrogen of corresponding main road.Main road pressure sensor 270 is used for
Monitoring flows through the pressure of the nitrogen of corresponding main road.
The branch of transfer pipeline 200 includes branch shut-off valve 280 and bypass flow sensor 290.Wherein, branch ends
Valve 280 is used under the control of control host 400, controls the on-off of the nitrogen of respective branch.Bypass flow sensor 290 is used for
Monitoring flows through the flow of the nitrogen of respective branch.
Control host 400 is used to acquire each pressure sensor, the flow sensor, temperature sensing in the nitrogen supply (NS) system
The related data for the nitrogen that device monitors, and according to each nitrogen pressure, flow, temperature data, determine that the nitrogen supply (NS) system is
Whether no normal work, i.e. the nitrogen supply (NS) system can supply the nitrogen for meeting its demand to scientific experiment load 400.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (8)
1. a kind of control circuit of solenoid valve characterized by comprising
Power supply；
Load, the first end of the load connect to power supply；
Switch unit, the second end of the load are connect with the switch unit, the switch unit ground connection；
The first transistor；
Second transistor, the power supply, the first transistor and second transistor are sequentially connected, the first transistor also with institute
The third end connection of load is stated, the second transistor is also connect with the 4th end of the load；
Solenoid valve, the solenoid valve are connect with the second transistor, when the switch unit is in the conductive state, described
One transistor and the second transistor are connected when both end voltage is greater than the conducting voltage of itself respectively, make the power supply, the
One transistor, second transistor and solenoid valve form access, and then the solenoid valve is made to generate electromagnetic field, to control solenoid valve
Open or close.
2. circuit according to claim 1, which is characterized in that
The load includes first resistor, second resistance, 3rd resistor, the 4th resistance；
The first end of the first resistor is connect with the first end of the power supply, the first transistor, the first resistor
The first end of second end and second resistance, the first end of 3rd resistor, the connection of the first end of the 4th resistance, the second resistance
Second end is connect with the switch unit；
The second end of the 3rd resistor is connect with the second end of the first transistor, the second end of the 4th resistance and institute
State the second end connection of second transistor.
3. circuit according to claim 1, which is characterized in that
The circuit further includes diode, and the diodes in parallel is at the solenoid valve both ends, for eliminating counter electromotive force.
4. circuit according to claim 3, which is characterized in that
The diode includes first diode and the second diode, the first diode and second Diode series
Afterwards, the solenoid valve both ends are connected in parallel on.
The diode further includes third diode, the 4th diode, after the third diode, the 4th Diode series, and
It is associated in the solenoid valve both ends.
5. circuit according to claim 1, which is characterized in that
The switch unit includes controller and triode, and the controller is connect with the base stage of the triode, the load
It is connect with the collector of the triode, the emitter ground connection of the triode；The controller is based on coming from nitrogen supply (NS) system
The nitrogen supply (NS) that host is controlled in system controls signal, controls the triode ON or cut-off；
Wherein, the nitrogen supply (NS) system is used for scientific experiment load the supply of nitrogen, and the control host is according to the nitrogen
Nitrogen amount needed for the data of flow sensor and the preset scientific experiment load, Xiang Suoshu controller in supply system
The nitrogen supply (NS) control signal is sent, the triode ON or cut-off are made, to open or close the solenoid valve, and then is controlled
The supply of nitrogen processed.
6. circuit according to claim 1, which is characterized in that
The circuit includes the first sub- control circuit and the second sub- control circuit, and the first sub- control circuit is sub with described second
Control circuit includes the power supply, load, switch unit, the first transistor and second transistor, the first son control
The second transistor of circuit is connect with the solenoid valve respectively with the second transistor of the described second sub- control circuit.
7. a kind of nitrogen supply (NS) system characterized by comprising
Cylinder package, the cylinder package is for storing high pressure nitrogen and the high pressure nitrogen being decompressed to scientific experiment load institute
The nitrogen needed；
Transfer pipeline, the transfer pipeline are connect with the cylinder package, for the nitrogen to be delivered to the scientific experiment
Load；The transfer pipeline includes multiple solenoid valves, and each solenoid valve is connected with two control circuits respectively, described two controls
Circuit is respectively used to the opening and closing of the solenoid valve of control connection；
Host is controlled, the control host is connect with multiple control circuits, and the control host is according to the nitrogen supply (NS)
Nitrogen amount needed for the data of flow sensor and the preset scientific experiment load in system, Xiang Suoshu control circuit hair
It send nitrogen supply (NS) to control signal, opens or closes the solenoid valve of the control circuit connection, and then control the supply of nitrogen；
Wherein, the control circuit includes power supply, load, switch unit, the first transistor, second transistor, solenoid valve；It is described
The first end of load is connect with the power supply；The second end of the load is connect with the switch unit, and the switch unit connects
Ground；The power supply, the first transistor and second transistor are sequentially connected, third of the first transistor also with the load
End connection, the second transistor are also connect with the 4th end of the load；The solenoid valve is connect with the second transistor,
When the switch unit is in the conductive state, the first transistor is greater than in both end voltage respectively with the second transistor
It is connected when the conducting voltage of itself, so that the power supply, the first transistor, second transistor and solenoid valve is formed access, and then make
The solenoid valve generates electromagnetic field, to control opening or closing for the solenoid valve of connection.
8. system according to claim 7, which is characterized in that
The transfer pipeline include a road Ge Zong, multiple main roads and multiple branches, total road respectively with the multiple main road
Connection, for each main road, which connect with multiple branches, a branch in each scientific experiment load and multiple branches
Connection, the main road includes the solenoid valve, and the solenoid valve is connect with two control circuits, described two control circuits
It is respectively used to control opening or closing for the solenoid valve；
Wherein, the control circuit of the main road solenoid valve connection includes the first sub- control circuit and the second sub- control circuit, described
First sub- control circuit and the described second sub- control circuit include the power supply, load, switch unit, the first transistor and
Second transistor, the second transistor of the first sub- control circuit and the second transistor of the described second sub- control circuit are distinguished
It is connect with the solenoid valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603336.XA CN110324031A (en) | 2019-07-05 | 2019-07-05 | A kind of control circuit of nitrogen supply (NS) system and solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603336.XA CN110324031A (en) | 2019-07-05 | 2019-07-05 | A kind of control circuit of nitrogen supply (NS) system and solenoid valve |
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| CN110324031A true CN110324031A (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910603336.XA Pending CN110324031A (en) | 2019-07-05 | 2019-07-05 | A kind of control circuit of nitrogen supply (NS) system and solenoid valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059469A (en) * | 2019-12-31 | 2020-04-24 | 中国科学院空间应用工程与技术中心 | Integrated space application nitrogen supply distribution control device |
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