CN106787665A - A kind of instrument valve power supply control system - Google Patents
A kind of instrument valve power supply control system Download PDFInfo
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- CN106787665A CN106787665A CN201611241258.6A CN201611241258A CN106787665A CN 106787665 A CN106787665 A CN 106787665A CN 201611241258 A CN201611241258 A CN 201611241258A CN 106787665 A CN106787665 A CN 106787665A
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- Prior art keywords
- power supply
- power
- circuit
- valve
- control system
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of instrument valve power supply control system, including:Control module, power supply, the power-supplying circuit being connected with the output end of the power supply, the power-switching circuit being connected with the power-supplying circuit output end, the valve drive module being connected with the power-switching circuit output end, the control module is connected with the valve drive module；The control module is connected with the power-supplying circuit and controls the power-supplying circuit to disconnect or turn on；The power-switching circuit be used for by the input voltage of power supply convert to it is described driving valve required for driving voltage so that the valve drive module driven valve opening or closing.Using the present invention, the service life of power supply is extended, it is to avoid the frequent replacing of power supply.
Description
Technical field
The present invention relates to automation instrument technology field, particularly a kind of instrument valve power supply control system.
Background technology
With scientific and technological progress, popularization engineering is developed rapidly, and natural gas comes into huge numbers of families, the metering of combustion gas
Mainly carried out with gas meter, flow meter at present, valve is the executing agency of gas meter, flow meter, and effective control of valve enters outlet for gas meter, flow meter
Break-make and flow control it is most important., it is necessary to provide power supply to valve in valve control system.In regular flow combustion
In gas meter valve control system, generally alkaline cell series, parallel electricity is saved using using the series connection of 2 amount of energy saving type lithium batteries or using 4
Solution electric capacity, powers to control valve.But energy type lithium battery and alkaline cell service life are shorter, it is necessary to often change, when entering
During row battery altering, user or staff are readily accessible the both positive and negative polarity shell fragment of battery case, cause the electrostatic of human body to pass through
Both positive and negative polarity shell fragment enters inside electronic product, influences the performance of product.
Simultaneously as current battery can only provide relatively low voltage（Generally 3.6~3.9V voltages）, it is relatively low
Voltage limits the output of power, it is impossible to provide foot to fix the control valve of internal resistance under big flow and the high pressure operating mode that has
Enough big driving currents, and then the energy for needing cannot be provided for operational control valve；Meanwhile, battery cannot be in temperature in the prior art
Under the conditions of degree is less than -25 DEG C, release larger current realizes normal switch valve.Therefore, in order to overcome disadvantages mentioned above, design application
It is used to effectively solve above-mentioned practical problem in high pressure, big flow gas meter, flow meter control valve power control system.
The content of the invention
It is an object of the invention to provide a kind of instrument valve power supply control system, it is therefore an objective to, can be carried to driving valve
For sufficiently large energy so that valve overcomes air pressure to realize normal switch valve.
The present invention be directed to above-mentioned situation, there is provided a kind of instrument valve power supply control system, the system includes：Control
Module, power supply, the power-supplying circuit being connected with the output end of the power supply are exported with the power-supplying circuit
Hold the power-switching circuit of connection, the valve drive module being connected with the power-switching circuit output end, the control module
It is connected with the valve drive module；
The control module is connected with the power-supplying circuit and controls the power-supplying circuit to disconnect or turn on；
The power-switching circuit is used to convert the input voltage of power supply to required for the valve drive module
Driving voltage, so that the valve drive module driven valve opening or closing.
The technical program is connected using control module with power-supplying circuit, and power-supplying circuit connects with power-switching circuit
Connect, power-switching circuit is connected with valve drive module, valve drive module is connected with valve.
Therefore power-supplying circuit can be controlled to power valve drive module by control module.When valve drive module
When not needing work, control module can close power-supplying circuit, so as to reduce power consumption, improve the utilization rate of the energy,
The supply of the energy of power supply is saved, so as to extend the service life of power supply.
In addition, the input voltage of power supply to be converted into the technical program the driving mould of valve using power-switching circuit
Driving voltage required for block, when the setting of power-switching circuit solves the power supply using 3.6 ~ 3.9V, power output
It is limited, it is impossible to make the situation of the valve drive module driving voltage sufficiently large for valve is provided.Avoid in the prior art to supplying
The strict demand of power supply, expand the range of choice of power supply, so as to be larger output current, output voltage higher
The application of power supply provides good solution.
In addition, the power-supplying circuit includes：First switch element, second switch element；The first switch element
Source electrode be connected with power supply output end, the first switch element drain electrode for the power-supplying circuit output end,
The grid of the first switch element is connected with the colelctor electrode of second switch element, the base stage of the second switch element with it is described
Second resistance is connected, and the second resistance is connected with the control module.
Power-supplying circuit in the technical program is cooperated using first switch element and second switch element, can
Power supply is fast and effectively switched on or switched off, power consumption is reduced, the service life of power supply is extended.
In addition, the first switch element is managed for P-MOS, second switching element is NPN triode, the power supply electricity
First resistor is connected between source output terminal and the transistor collector, between the transistor base and the control module
It is connected with second resistance, the triode emission level ground connection.The present embodiment using first resistor as pull-up resistor, by first switch
The grid of element moves high level to, when second switch element be stopped i.e. colelctor electrode be in open-circuit condition when so that first
The level of switch element grid reaches determination state,.So that the drain electrode cut-off of first switch element, Non voltage output.
In addition, the power-switching circuit is booster circuit, the booster circuit includes boost control chip and inductor wire
Circle, the power input pin of the boost control chip is connected with one end of inductance coil, the other end of the inductance coil and
The switch control pin connection of the boost control chip.Booster circuit is used in the technical program, it is achieved thereby that rising voltage-controlled
System and voltage stabilization output.For control valve operation provides energy higher, and then realize the effective control to valve.
In addition, the power-switching circuit also includes feedback module, described feedback module one end is connected with inductance coil, separately
One end is connected with the boost control chip feedback pin.Feedback circuit is employed in the technical program in boost control chip,
Ensure that the stabilization of output voltage.
In addition, the power-switching circuit also includes feedback module, the feedback module includes 3rd resistor and with the 3rd
4th resistance of resistant series, described 3rd resistor one end is connected with the inductance coil, the other end of the 3rd resistor with
One end connection of the 4th resistance, the other end ground connection of the 4th resistance；The common port of the 3rd resistor and the 4th resistance with
The boost control chip feedback pin connection.The technical program passed through 3rd resistor and the 4th resistance forms Voltage Feedback electricity
Road, it is ensured that the stability of output voltage.
In addition, the boost control chip is LMR62421 control chips.
In addition, also including being used to reduce the filter circuit of voltage ripple.
In addition, the filter circuit includes：The prime filter circuit of the power-converting circuit input is connected to, and
It is connected to the rear class filtering circuit of the power-converting circuit output end.The technical program uses front and back stages filter circuit, carries
The stability of output voltage high.Prime filter circuit effectively reduces the voltage ripple of input boost chip, while when load becomes
During change, rear class filtering circuit can make input and output voltage keep stabilization.
In addition, also including the overcurrent protection mould being connected between the power-converting circuit and the valve drive module
Block.The technical program, when late-class circuit or valve are short-circuited failure, protection is played to booster circuit using overcurrent protection module
Effect, it is to avoid influence to booster circuit.
In addition, the overcurrent protection module includes resettable fuse.The resettable fuse of the technical program is in electric current
Not up to before protection value, equivalent to a wire, when rear polar circuit or valve are short-circuited failure, resistance can soon become increase,
To reach the purpose of protection booster circuit
In addition, the power supply includes compound lithium battery, the supply voltage of the compound lithium battery is 3.6~3.9V.
In addition, the compound lithium battery includes energy type lithium battery monomer and is connected in parallel with energy type lithium battery monomer
Chemical electric capacity.The technical program when valve operation is carried out, because the internal resistance of chemical electric capacity is relatively low, therefore, mainly by chemistry
Electric capacity carries out high-power electric current output.After the completion of operation, energy type lithium battery can be chemical-electrical capacity charge in low current form, no
Lithium battery overdischarge can be produced and cause the life-span to decline.Simultaneously as chemical-electrical receiving electroresponse is fast, energy type lithium can be eliminated
The voltage delay effect that battery cell band of passivation is come.
Control module in valve power supply control system of the invention is connected with power-supplying circuit, the power supply control
Circuit is turned on or off by the control of control module, therefore, it can the disconnecting circuit when not needing power supply to be powered
Connection, reduces the power consumption of circuit, extends the service life of power supply, it is to avoid the frequent replacing of power supply；In addition, Power convert
Circuit can by the input voltage of power supply convert to drive valve required for driving voltage, meet the operating voltage of valve
It is required that.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of the first embodiment of instrument valve power supply control system of the invention；
A kind of schematic diagram of second embodiment of instrument valve control power supply electric power supply control system of Fig. 2 present invention；
Fig. 3 is a kind of schematic diagram of the third embodiment of instrument valve power supply control system of the invention.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
The present invention program is applied to instrument valve control, for example：The gauges such as domestic gas table, industrial flow meter and water meter
The Valve controlling of table.
With reference to Fig. 1, a kind of figure schematic diagram of the first embodiment of instrument valve power supply control system of the invention,
The system includes：Control module 1, power-supplying circuit 2, power-switching circuit 3, valve drive module 4；Wherein, power supply
Output end be connected with power-supplying circuit 2, the power-switching circuit 3 being connected with the output end of power-supplying circuit 2, with power supply turn
Change the valve drive module 4 of the output end of circuit 3 connection, the control module 1 being connected with the input of valve drive module 4；
Control module 1 is connected with power-supplying circuit 2, and control module 1 controls the disconnection or conducting of power-supplying circuit 2；
Power-switching circuit 3 passes through for the input voltage of power supply to be converted the driving voltage to required for driving valve
Valve drive module 4 is connected to valve, and valve drive module 4 drives valve opening by the realization that rotates and reverse of controlled motor
Or close.
The technical program is connected using control module with power-supplying circuit, and power-supplying circuit connects with valve drive module
Connect, therefore power supply of the power-supplying circuit to valve drive module can be controlled by control module.When valve drive module not
When needing work, control module can close power-supplying circuit, so as to reduce energy consumption, improve the utilization rate of the energy, section
The supply of the energy in power saving source, so as to extend the service life of power supply.
In addition, be converted into the input voltage of power supply needed for driving valve using power-switching circuit by the technical program
The driving voltage wanted, when the setting of power-switching circuit solves the power supply using 3.6 ~ 3.9V, in the magnitude of current, pipeline high
Under conditions of pressure, power output is limited, it is impossible to drive the situation of valve normal work.Avoid in the prior art to power supply electricity
The strict demand in source, expands the range of choice of power supply, so as to be larger output current, the power supply electricity compared with low input
The application in source provides good solution.
Explanation is needed, power supply is by after the conversion of power-switching circuit, the power of its output can be with control valve
The driving power of door matches, and overcomes big flow for control valve provides larger starting current and can provide, pipeline pressure high
The driving current of power.
Described power-switching circuit can be booster circuit in the embodiment of the present invention, and control module can use monolithic
Machine, the present invention is described in detail so that power-switching circuit is as booster circuit as an example below.With reference to shown in Fig. 2, the figure is this
A kind of schematic diagram of second embodiment of instrument valve control power supply electric power supply control system is invented, it is different from first embodiment
It is except including power-supplying circuit, booster circuit in the present embodiment（Power-switching circuit）, single-chip microcomputer（Control module）, valve
Door drive module, outside, also include：Prime filter circuit 5, rear class filtering circuit 6 and current foldback circuit 7.
Wherein, the input of prime filter circuit 5 is connected with power-supplying circuit, and output end is connected with booster circuit, when
During load change, input and output voltage can be made to keep stabilization.Also, reduce input and output voltage ripple：
The input of rear class filtering circuit 6 is connected with the output end of booster circuit, and output end and the excessively stream of rear class filtering circuit are protected
The input connection of shield electricity 7；The rear class filtering circuit, can make input and output voltage keep steady when load changes
It is fixed, and, it is possible to decrease input and output voltage ripple.
Current foldback circuit 7, for preventing load short circuits or current overload from burning out component, protective current is reached as high as
500mA；During concrete application, resettable fuse can be used.
Explanation is needed, prime filter circuit, booster circuit and rear class filtering circuit in the present embodiment are only respectively
Vertical circuit, when implementing, three circuits can also merge referred to as power-switching circuit, herein not as to of the invention one
Individual limitation.
With reference to Fig. 3, the figure is a kind of signal of the third embodiment of instrument valve power supply control system of the invention
Figure, in the present embodiment, power-supplying circuit 2 is specifically included：First resistor R1, second resistance R2, first switch element Q1, second
Switch element Q2；Wherein, the source electrode of first switch element Q1 is connected with power supply output end, the drain electrode of first switch element Q1
It is the output end of power-supplying circuit, the grid of first switch element Q1 is connected with the colelctor electrode of second switch element Q2, second
Switch element Q2 is connected through first resistor with power supply input Vin, and the base stage of second switch element Q2 is through second resistance R2
It is connected with the control port of control module, the emitter grounding of second switch element Q2.Wherein, the branch road where R2 is power supply control
One control input branch road Ctr of circuit；First switch element Q1 can be P-channel metal-oxide-semiconductor；Second switch element Q1 can be NPN
Triode.
When implementing, when valve driving circuit does not need work, Ctr pins are set to low level.At this moment, triode Q2
In cut-off state.Now, the grid of the metal-oxide-semiconductor Q1 of P-channel, does not have determination state.R1 as pull-up resistor, by the grid of Q1
Move high level to, level is changed into determination state.The source electrode of Q1 ends to drain electrode.Now, the drain electrode of metal-oxide-semiconductor is not late-class circuit
Power supply, realizes low-power consumption.When valve driving circuit needs work, Ctr pins are set to high level.At this moment, triode Q2 is in
Saturation conduction state, colelctor electrode and the emitter stage of Q2 are conducting to ground.Meanwhile, the grid of Q1 is conducting to ground, Q2 by the colelctor electrode of Q2
Source electrode to drain electrode turn on.Now, the drain electrode of metal-oxide-semiconductor is powered for late-class circuit, and late-class circuit is started working.
Prime filter circuit 5 includes the first electric capacity C1, the second electric capacity C2；Wherein, C1 and C2 is in parallel, the anode of C1 after parallel connection
Anode with C2 is connected with the drain electrode of Q1, and the negative electrode of C1 and the negative electrode of C2 are grounded；First electric capacity C1 may be selected nonpolarity pottery
Porcelain electric capacity, realizes low frequency filtering, and the first electric capacity C1 is ensured during switching transient, and input Vin voltages will not decline excessively.The
Two electric capacity C2 may be selected nonpolarity ceramic condenser, used as shunt capacitance, High frequency filter.
Booster circuit（Power-switching circuit）3, this circuit can be switch in parallel type booster circuit.The booster circuit can be wrapped
Include：3rd resistor R3, inductance coil L1, diode D1, the 4th resistance R4, the 5th resistance R5, the 3rd electric capacity C3 and boosting rectifier control
Chip U1.Wherein, boost chip U1, EN end are that chip operation enables pin, and IN is power input pin, and SW draws for switch control
Pin, FB is output voltage feedback pin.
3rd resistor R3, used as pull-up resistor, its one end is connected with the output end of preceding filter circuit, its other end with boosting
The Enable Pin EN pins connection of chip；When implementing, when EN pins are pulled into high level, booster circuit is started working,
During low level, booster circuit is stopped.So that boost chip SW pins do not produce PWM waveform, stop boosting output.
In addition, the EN of boost chip enables pin, directly by R3 pull-up resistors, the drain electrode of Q1 is connected to so that Q1 is turned on
Afterwards, booster circuit is to start working, and saves a controlling switch.
Inductance L1, its one end is connected with the power input pin IN of boost chip U1, and the other end is opened with boost chip U1's
Close controlling switch SW connections.Inductance coil L1 is used to mutually change electric energy and magnetic energy.When first switch element metal-oxide-semiconductor is closed
Close, boost chip U1 starts working, chip internal produces PWM ripples by SW pins, when SW pins set low, inductance L1 is by electric energy
Magnetic Energy Storage is converted to, when SW pins put high, the magnetic energy of storage is converted to electric energy, and this energy by inductance L1
It is superimposed with input supply voltage, by obtaining smooth DC voltage after the filtering of diode D1 and electric capacity C3, there is provided to load,
Formed after being converted to electric energy superposition due to magnetic energy that this voltage is input supply voltage and inductance, so output voltage is higher than
Input voltage, realizes the process of boosting.
Diode D1, its anode is connected with the output end of inductance coil L1, its negative electrode as booster circuit output end with
Post filtering circuit is connected；Diode D1 can be Schottky diode, and its feature is that tube voltage drop is low, and primarily serves the work of isolation
With；When the SW pins of boost chip U1 set low, the cathode voltage of Schottky diode D1 is forced down than negative electricity, now diode D1
Reversely cut-off, make this inductance L1 thermal energy storage process do not influence output capacitor to load normal power supply, boost chip U1's
When SW pins put high, the energy after two kinds of superpositions is powered to the load by diode D1, now diode D1 forward conductions, it is desirable to
Its forward voltage drop is the smaller the better to make more energy be supplied to load as far as possible.
Resistance R4, resistance R5, wherein one end of resistance R4 are connected with the negative electrode of diode D1, the other end and the electricity of resistance R4
Hinder one end connection of R5, the other end ground connection of resistance R5；Wherein, resistance R4 and resistance R5 as booster circuit feedback resistance,
Between the FB pins of input voltage Vout and boost chip U1, voltage negative feedback circuit is constituted, inside boost chip U1, passed through
The feedback voltage obtained after resistance R4 and R5 partial pressure, automatically adjusts the dutycycle that SW pins export PWM waveform, makes output voltage
Stabilization.
3rd electric capacity C3, is parallel to the two ends of the 4th resistance.Used as external compensation electric capacity, effect is to increase to 3rd electric capacity C3
Plus phase margin, make circuit that there is excellent transient response.
Rear class filtering circuit 6, including the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6,;Wherein, the 4th electric capacity C4,
5th electric capacity C5, the 6th electric capacity C6 are parallel with one another, and the anode after three electric capacity parallel connections is connected with the output end of booster circuit, three
Minus earth after electric capacity parallel connection.When implementing, the 4th electric capacity C4 may be selected nonpolarity ceramic condenser, realize low frequency filtering；
5th electric capacity C5, may be selected nonpolarity ceramic condenser, as shunt capacitance, High frequency filter.6th electric capacity C6 may be selected electrolysis electricity
Hold, effect is the stability that output voltage is improved when load current instantaneous variation.
Current foldback circuit 7, can be resettable fuse F1, and its one end is connected with the output end of post filtering circuit, should
The other end of resettable fuse is connected as the input of power supply with valve drive module, for subordinate's circuit provides power supply；When
When F1 output ends are short-circuited or driving load produces electric current to exceed the maximum current value that resettable fuse F1 is born, from extensive
The resistance of double insurance silk F1 can increase moment, play a part of to protect booster circuit.The maximum behaviour of control valve is reached when operation is performed
After making the time, Ctr pins are dragged down the input power of level, deenergization and booster circuit, fuse can be returned to voluntarily just
Beginning state.The resettable fuse before electric current is not up to protection value, equivalent to a wire, when after polar circuit or valve occur
During short trouble, resistance can soon become increase, to reach the purpose of protection booster circuit.
Explanation is needed, the power supply described in the embodiment of the present invention can use compound lithium battery, and this is compound
Lithium battery is composed in parallel by an energy type lithium battery and a chemical electric capacity.When valve operation is carried out, due to chemical-electrical
The internal resistance of appearance is relatively low, therefore, high-power electric current output is mainly carried out by chemical electric capacity.After the completion of operation, energy type lithium battery meeting
It is chemical-electrical capacity charge in low current form, lithium battery overdischarge will not be produced and cause the life-span to decline.Simultaneously as chemical-electrical
Receiving electroresponse is fast, can eliminate the voltage delay effect that energy type lithium battery monomer band of passivation is come.
The embodiment of the present invention uses single-chip microcomputer（Control module）Power supply to power-supplying circuit is controlled, using power supply
Change-over circuit is converted to the input voltage of power supply, it is thus achieved that when using single-unit energy type lithium battery power supply,
I.e. can be when pipeline pressure be 30 ~ 60 kPa, such as 50kPa, instantaneous delivery is（30~50）m3During/h, such as 40 m3/h
Under the conditions of, realize the switch control to valve；
In addition, the power-switching circuit in the embodiment of the present invention uses booster circuit, it is achieved thereby that the control of boosting and voltage
Stabilization output.And for control valve operation provides larger energy, and then realize the effective control to valve.
Additionally, the booster circuit of the embodiment of the present invention（Power-switching circuit）Front end is provided with power-supplying circuit, and
Controlled by single-chip processor i/o mouthful so that when that need not carry out switch valve and operate, whole circuit is powered disconnection, has reached reduction
The purpose of power consumption.The power-supplying circuit includes two switch elements, and one of switch element is metal-oxide-semiconductor, second switch unit
Part is triode, when valve is not operated, the power supply of power supply and booster circuit is disconnected, and solves power problemses.
Additionally, the embodiment of the present invention respectively sets one-level filter circuit in booster circuit front-end and back-end（Prime filter circuit
With rear class filtering circuit）, when the load, input and output voltage can be made to keep stabilization.Also, reduce input and output
Voltage ripple.
In addition, instrument valve control power supply electric power supply control system described in the embodiment of the present invention is applicable flow instrument equipment
In, particularly in the flow instrument equipment such as gas meter, flow meter, water meter.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (13)
1. a kind of instrument valve power supply control system, it is characterised in that including：Control module, power supply, with the confession
The power-supplying circuit of the output end connection of power supply, the power-switching circuit being connected with the power-supplying circuit output end,
The valve drive module being connected with the power-switching circuit output end, the control module connects with the valve drive module
Connect；
The control module is connected with the power-supplying circuit and controls the power-supplying circuit to disconnect or turn on；
The power-switching circuit is used for the driving converted the input voltage of power supply to required for the driving valve
Voltage, so that the valve drive module driven valve opening or closing.
2. instrument valve power supply control system according to claim 1, it is characterised in that the power-supplying circuit
Including：First switch element, second switch element；The source electrode of the first switch element is connected with power supply output end, institute
The drain electrode for stating first switch element is the output end of the power-supplying circuit, and the grid of the first switch element is opened with second
The colelctor electrode connection of element is closed, the base stage of the second switch element is connected with the control module.
3. instrument valve power supply control system according to claim 2, it is characterised in that the first switch element
For P-MOS is managed, second switching element is triode, is connected between the power supply output end and the transistor collector
First resistor is connected to, second resistance, the triode emission level are connected between the transistor base and the control module
Ground connection.
4. instrument valve power supply control system according to claim 1, it is characterised in that the power-switching circuit
It is booster circuit, the booster circuit includes boost control chip and inductance coil, the power input of the boost control chip
Pin is connected with one end of inductance coil, the switch control pin of the other end of the inductance coil and the boost control chip
Connection.
5. instrument valve power supply control system according to claim 4, it is characterised in that the power-switching circuit
Also include feedback module, described feedback module one end is connected with inductance coil, the other end draws with boost control chip feedback
Pin is connected.
6. instrument valve power supply control system according to claim 4, it is characterised in that the power-switching circuit
Also include feedback module, the feedback module includes 3rd resistor and the 4th resistance connected with 3rd resistor, the 3rd electricity
Resistance one end is connected with the inductance coil, and the other end of the 3rd resistor is connected with one end of the 4th resistance, the 4th electricity
The other end ground connection of resistance；The common port of the 3rd resistor and the 4th resistance is connected with the boost control chip feedback pin.
7. instrument valve power supply control system according to claim 4, it is characterised in that the boost control chip
It is LMR62421 control chips.
8. instrument valve power supply control system according to claim 1, it is characterised in that also including being used to reduce electricity
Emboss the filter circuit of ripple.
9. instrument valve power supply control system according to claim 8, it is characterised in that the filter circuit bag
Include：The prime filter circuit of the power-converting circuit input is connected to, and is connected to the power-converting circuit output
The rear class filtering circuit at end.
10. the instrument valve power supply control system according to claim 1-9 any one, it is characterised in that also wrap
Include the overcurrent protection module being connected between the power-converting circuit and the valve drive module.
11. instrument valve power supply control systems according to claim 10, the overcurrent protection module is included from extensive
Double insurance silk.
The 12. instrument valve power supply control system according to claim any one of 1-9, it is characterised in that the confession
Power supply includes compound lithium battery, and the supply voltage of the compound lithium battery is 3.6~3.9V.
13. according to claim 12 instrument valve power supply control system, it is characterised in that the compound lithium battery
The chemical electric capacity being connected in parallel including lithium battery monomer and with lithium battery monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611241258.6A CN106787665A (en) | 2016-12-29 | 2016-12-29 | A kind of instrument valve power supply control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611241258.6A CN106787665A (en) | 2016-12-29 | 2016-12-29 | A kind of instrument valve power supply control system |
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| CN106787665A true CN106787665A (en) | 2017-05-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107359654A (en) * | 2017-06-01 | 2017-11-17 | 金卡智能集团股份有限公司 | A kind of measuring instrument radio communication device power control system |
| CN107465340A (en) * | 2017-08-11 | 2017-12-12 | 昊翔电能运动科技(昆山)有限公司 | Power-supply management system and method |
| CN109390991A (en) * | 2017-08-10 | 2019-02-26 | 华帝股份有限公司 | Control circuit and control method for gas valve battery power supply |
| CN110275058A (en) * | 2019-06-20 | 2019-09-24 | 华立科技股份有限公司 | The communication module overload identification protection circuit and method of intelligent electric energy meter |
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| CN103727286A (en) * | 2014-01-17 | 2014-04-16 | 东南大学 | Mining electromagnetic valve control system with intelligent power supply switch |
| CN205178880U (en) * | 2015-12-08 | 2016-04-20 | 广州市千牧电子有限公司 | Switch control device |
| CN205504129U (en) * | 2016-03-18 | 2016-08-24 | 台州通禾流体控制设备有限公司 | Automatic valve control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727286A (en) * | 2014-01-17 | 2014-04-16 | 东南大学 | Mining electromagnetic valve control system with intelligent power supply switch |
| CN205178880U (en) * | 2015-12-08 | 2016-04-20 | 广州市千牧电子有限公司 | Switch control device |
| CN205504129U (en) * | 2016-03-18 | 2016-08-24 | 台州通禾流体控制设备有限公司 | Automatic valve control device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359654A (en) * | 2017-06-01 | 2017-11-17 | 金卡智能集团股份有限公司 | A kind of measuring instrument radio communication device power control system |
| CN109390991A (en) * | 2017-08-10 | 2019-02-26 | 华帝股份有限公司 | Control circuit and control method for gas valve battery power supply |
| CN107465340A (en) * | 2017-08-11 | 2017-12-12 | 昊翔电能运动科技(昆山)有限公司 | Power-supply management system and method |
| CN110275058A (en) * | 2019-06-20 | 2019-09-24 | 华立科技股份有限公司 | The communication module overload identification protection circuit and method of intelligent electric energy meter |
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