CN205141981U - Train normally open solenoid valve power driving circuit based on input is clamped down on - Google Patents
Train normally open solenoid valve power driving circuit based on input is clamped down on Download PDFInfo
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- CN205141981U CN205141981U CN201520855261.1U CN201520855261U CN205141981U CN 205141981 U CN205141981 U CN 205141981U CN 201520855261 U CN201520855261 U CN 201520855261U CN 205141981 U CN205141981 U CN 205141981U
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Abstract
The utility model provides a train normally open solenoid valve power driving circuit based on input is clamped down on, the utility model relates to a rail train electric power system, its all kinds of electromagnetic valve drive circuit that aim at solving current rail train lack short -circuit protection, and there have discharge time to be long, and control signal pulse frequency is limited, control failure, poor stability and reliability low grade technical problem. This invention constitutional features includes pulse width modulated signal generator: connect, the circuit is clamped down on in the input: receive the pulse signal of pulse width modulated signal generator output, keep apart the unit, the output driver circuit: receive the output voltage who keeps apart the unit, the steady voltage return circuit of discharging: including the solenoid valve, obtain on/off signals through the output driver circuit, keep apart the unit: still receive the voltage of clamping down on that circuit output was clamped down on in the input. The utility model is used for all kinds of solenoid valves of drive rail train.
Description
Technical field
The present invention relates to track train electric power system, being specifically related to a kind of based on inputting the train normally open solenoid valve power driving circuit clamped down on.
Background technology
All kinds of driving circuit for electromagnetic valve of existing track train, input stage control signal is pwm pulse signal, its pulse voltage value is at about 5V, and between the voltage region using about 100V in driving stage, if lost efficacy in short-term at driving stage generation interference noise or electronic component, noise or short circuit current very likely covered input stage control signal, caused controlling to lose efficacy, cause thrashing further, thus cause possible serious accident and bear economic loss; There is gain reduction in tradition filter circuit, the control signal very low to reference voltage is not effective solution; Driving stage lacks effective discharge loop, the job stability of influential system; Output stage lacks isolating device, discharge loop and electric current and guides, and the circuit working response time is longer.Therefore, design safety, stable, reliable and the drive circuit that the response time is short or antiskid valve power control circuit are necessary.
Summary of the invention
For above-mentioned prior art; the object of the invention is to provide a kind of based on inputting the train normally open solenoid valve power driving circuit clamped down on; it is intended to all kinds of driving circuit for electromagnetic valve solving existing track train; lack short-circuit protection; there is discharge time long; control signal pulse frequency is limited, controls to lose efficacy, poor stability and the technical problem such as reliability is low.
For achieving the above object, the technical solution used in the present invention is as follows:
Based on inputting the train normally open solenoid valve power driving circuit clamped down on, comprising power supply, comprising pulse-duration modulation signal generator further: connect power supply; Circuit is clamped down in input: receive the pulse signal that pulse-duration modulation signal generator exports; Isolated location: comprise transformer, first electric capacity in parallel with transformer T1, receives the pulse signal that pulse-duration modulation signal generator exports; Output driving circuit: the output voltage receiving isolated location; Voltage stabilizing discharge loop: comprising electromagnetically operated valve, obtains opening and closing signal by output driving circuit; Isolated location: also receive the Clamping voltages that circuit output is clamped down in input.
In such scheme, circuit is clamped down in described input, comprises the first triode: grid connects power supply, and source electrode is connected with drain electrode; Second triode: grid connects the source electrode of the first triode and drain electrode also connects the source electrode of the first triode; 3rd triode: the source electrode of drain electrode connection second triode, source ground; First inverter: input connects the grid of the second triode; Second inverter: input connects the output of the first inverter; 4th triode: grid connects the output of the second inverter, source ground; 5th triode: grid connects the output of the second inverter, source electrode connects the drain electrode of the 4th triode, and its drain electrode is connected to pulse-duration modulation signal generator.6th triode: grid connects the source electrode of the 5th triode, its source ground and drain electrode is connected to isolated location.During normal work, electric leakage can not be produced; For control wave provides synchronous boost, significantly improve the highest accommodation value of circuit noise; Increase reliability, stability and circuit noise resisting ability substantially; Reduce and control failure incidence.
In such scheme, described isolated location, comprises transformer, with the first electric capacity of transformers connected in parallel.
In such scheme, described output driving circuit, comprises the 7th triode: grid connects isolated location, source ground; Pull-up power supply: the drain electrode connecting the 7th triode; Darlington transistor: base stage connects the drain electrode of the 7th triode; First diode: positive pole connects the emitter of Darlington transistor and the collector electrode of negative pole connection Darlington transistor; Second diode: positive pole connects the positive pole of the first diode, minus earth.
In such scheme, described voltage stabilizing discharge loop, also comprises the second electric capacity: isolation and amplifier drive circuit and voltage stabilizing discharge loop; 3rd diode: positive pole connects the second electric capacity; First Zener diode: plus earth, negative pole connects the negative pole of the 3rd diode; 3rd electric capacity: one end connects the negative pole of the 3rd diode; The 3rd electric capacity other end is also connected with the 4th diode and the second Zener diode; The negative pole of the 4th diode connects the positive pole of the 3rd diode, and the negative pole of the second Zener diode connects the negative pole of the 3rd diode; Electromagnetically operated valve the 3rd electric capacity in parallel.Provide current limliting, water conservancy diversion and discharge loop, improve circuit response time and stability; Provide loop insulation blocking.
In such scheme, preferably, described pull-up power supply, selects the direct current of voltage 100V, is connected the drain electrode of the 7th triode by current-limiting resistance.
In such scheme, preferably, described power supply, selects the DC source of voltage 5V.
In such scheme, preferably, described triode, selects N raceway groove and/or P channel bipolar type isolated-gate field effect transistor (IGFET).
In such scheme, preferably, described inverter, comprise N channel bipolar type isolated-gate field effect transistor (IGFET) and P channel bipolar type isolated-gate field effect transistor (IGFET), the drain electrode of P channel bipolar type isolated-gate field effect transistor (IGFET) is connected with supply power voltage VCC.
In such scheme, preferably, circuit is clamped down in described input, and clamp down on to about 7V by the pulse signal reference voltage of pulse-duration modulation signal generator (100), namely reference voltage synchronous boost is to about 7V.Improve anti-interference.
Compared with prior art, beneficial effect of the present invention: improve the value held that circuit bears fault or interference noise, circuit malfunction or rate of breakdown significantly reduce, significantly and add the stability of power drives, security reliability and antijamming capability substantially; Significantly and reduce circuit response time substantially, control signal operating frequency range is expanded.
Accompanying drawing explanation
Fig. 1 is the circuit element catenation principle figure of specific embodiments of the invention;
In figure: VDD_IC-power supply, VDD-pull-up power supply, 100-pulse-duration modulation signal generator, 200-input clamps down on circuit, 300-isolated location, 400-output driving circuit, 500-voltage stabilizing discharge loop, 600-load, Qx, Dx-transistor, A-control voltage node, Ux-inverter, T1-transformer, Cx-electric capacity, Rx-resistance, S1-electromagnetically operated valve, x=1,2,3 ...
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Below in conjunction with accompanying drawing, the present invention will be further described:
Fig. 1 is specific embodiments of the invention circuit element catenation principle figure, pulse-duration modulation signal generator 100: connect power vd D_IC; Circuit 200 is clamped down in input: receive the pulse signal that pulse-duration modulation signal generator 100 exports; Isolated location 300: receive the pulse signal that pulse-duration modulation signal generator 100 exports; Output driving circuit 400: the output voltage receiving isolated location 300; Voltage stabilizing discharge loop 500: comprising electromagnetically operated valve S1, obtains opening and closing signal by drive circuit 400; Isolated location 300: also receive the Clamping voltages that circuit 200 output is clamped down in input.
Embodiment 1
Described output driving circuit 400, comprises the 7th triode Q7: grid connects isolated location 300, source ground; Pull-up power vd D: the drain electrode connecting the 7th triode Q7; Darlington transistor Q8: base stage connects the drain electrode of the 7th triode Q7; First diode D1: positive pole connects the emitter of Darlington transistor D8 and the collector electrode of negative pole connection Darlington transistor Q8; Second diode D2: positive pole connects the positive pole of the first diode D1, minus earth.
Embodiment 2
In input stage, open circuit discharge process, the second described triode Q2 and the 3rd triode Q3, serves as the resistance in testing circuit, maintains the 6th triode Q6 conducting half microseconds, thus bleed-off circuit electrostatic effectively.Be conducive to the stability and the reliability that improve circuit.
Embodiment 3
For driving stage and output stage, when output driving circuit 400 receives the pulse signal of high level, the 7th triode ON, the base stage of Darlington transistor Q8 is in low level state, and Darlington transistor Q8 will end; Otherwise when output driving circuit 400 receives low level pulse signal, Darlington transistor Q8 is by conducting, and the second electric capacity C2 obtains charging; When Darlington transistor Q8 ends again, the second electric capacity C2 discharges, and electromagnetically operated valve S1 obtains charging, produces electromagnetic induction, and switch obtains adhesive.
Embodiment 4
In input stage, control voltage node A, can be biased the first triode Q1 base current, control inputs clamps down on conducting and the cut-off of circuit 200, thus debugs the most applicable reference voltage value.
Embodiment 5
In output stage, Zener diode mainly plays guide functions, increases certain circuit response time, and in circuit closedown is, guides electrostatic in electric capacity to discharge; Secondly, when there is short-circuit voltage, electric current in circuit, acquisition punctures by the first Zener diode D3, discharges improper short-circuit voltage, electric current, prevents from producing load 600 circuit further destroying.
There is unknown mutation in hardware, the progress of technology is the reference of selection standard.But for changing bad invention, or cost viewpoint, only from the selection of technical scheme of practicality.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (4)
1., based on inputting the train normally open solenoid valve power driving circuit clamped down on, comprising power vd D_IC, it is characterized in that, comprising further
Pulse-duration modulation signal generator (100): connect power vd D_IC;
Circuit (200) is clamped down in input: receive the pulse signal that pulse-duration modulation signal generator (100) exports;
Isolated location (300): comprise transformer T1, the first electric capacity C1 in parallel with transformer T1, receives the pulse signal that pulse-duration modulation signal generator (100) exports;
Output driving circuit (400): the output voltage receiving isolated location (300);
Voltage stabilizing discharge loop (500): comprising electromagnetically operated valve S1, obtains opening and closing signal by output driving circuit (400);
Isolated location (300): also the Clamping voltages that circuit (200) exports is clamped down in reception input.
2. according to claim 1 a kind of based on inputting the train normally open solenoid valve power driving circuit clamped down on, it is characterized in that, circuit (200) is clamped down in described input, comprises
First triode Q1: grid connects power vd D_IC, source electrode is connected with drain electrode;
Second triode Q2: grid connects the source electrode of the first triode Q1 and drain electrode also connects the source electrode of the first triode Q1;
3rd triode Q3: the source electrode of drain electrode connection second triode Q2, source ground;
First inverter U1: input connects the grid of the second triode Q2;
Second inverter U2: input connects the output of the first inverter U1;
4th triode Q4: grid connects the output of the second inverter U2, source ground;
5th triode Q5: grid connects the output of the second inverter U2, source electrode connects the drain electrode of the 4th triode Q4, and its drain electrode is connected to pulse-duration modulation signal generator (100);
6th triode Q6: grid connects the source electrode of the 5th triode Q5, its source ground and drain electrode is connected to isolated location (300).
3. according to claim 1 a kind of based on inputting the train normally open solenoid valve power driving circuit clamped down on, it is characterized in that, described output driving circuit (400), comprises
7th triode Q7: grid connects isolated location (300), source ground;
Pull-up power vd D: the drain electrode connecting the 7th triode Q7;
Darlington transistor Q8: base stage connects the drain electrode of the 7th triode Q7;
First diode D1: positive pole connects the emitter of Darlington transistor Q8 and the collector electrode of negative pole connection Darlington transistor Q8;
Second diode D2: positive pole connects the positive pole of the first diode D1, minus earth.
4. a kind of train normally open solenoid valve power driving circuit clamped down on based on input according to claim 3, it is characterized in that, described pull-up power vd D, selects the direct current of voltage 100V, is connected the drain electrode of the 7th triode Q7 by current-limiting resistance R4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520855261.1U CN205141981U (en) | 2015-10-29 | 2015-10-29 | Train normally open solenoid valve power driving circuit based on input is clamped down on |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520855261.1U CN205141981U (en) | 2015-10-29 | 2015-10-29 | Train normally open solenoid valve power driving circuit based on input is clamped down on |
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| Publication Number | Publication Date |
|---|---|
| CN205141981U true CN205141981U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520855261.1U Active CN205141981U (en) | 2015-10-29 | 2015-10-29 | Train normally open solenoid valve power driving circuit based on input is clamped down on |
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| CN (1) | CN205141981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965181A (en) * | 2021-02-22 | 2021-06-15 | 哈尔滨工业大学（深圳） | Large-scale integrated photonic device array control circuit and method |
-
2015
- 2015-10-29 CN CN201520855261.1U patent/CN205141981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965181A (en) * | 2021-02-22 | 2021-06-15 | 哈尔滨工业大学（深圳） | Large-scale integrated photonic device array control circuit and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |