CN107919805A - A kind of compensation power circuit for metro stray current simulator - Google Patents
A kind of compensation power circuit for metro stray current simulator Download PDFInfo
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- CN107919805A CN107919805A CN201610523215.0A CN201610523215A CN107919805A CN 107919805 A CN107919805 A CN 107919805A CN 201610523215 A CN201610523215 A CN 201610523215A CN 107919805 A CN107919805 A CN 107919805A
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- 239000000203 mixture Substances 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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Abstract
The invention discloses a kind of compensation power circuit for metro stray current simulator, the present invention includes unsteady flow filter module, sampling module, current-limiting protection module, decompression expansion flow module, boost module and display module.Unsteady flow filter module provides stable operating voltage to all kinds of circuits such as decompression expansion streams in the present invention, and decompression expansion flow module provides reliable operating current to all kinds of circuits such as boostings.The additional 51 microcontroller STC12C5A60S2 minimum systems of synthetic circuit of the present invention carry out overcurrent protection, and 1062 liquid crystal displays are shown, and realize automatic power adjustment factor; into the test crossed repeatedly; for different as a result, take appropriate measures, the feasibility and stability of system are improved.
Description
Technical field
The present invention relates to a kind of compensation power circuit for metro stray current simulator, it is mainly used for subway rail
Road, metro stray current is prevented by segmented current compensation, and in particular to one kind compensation power circuit.
Background technology
Subway is developing rapidly as the important tool of urban track traffic, and the method for operation of subway is supplied using direct current more
Electricity, direct-current propulsion system and using rail as current reflux line.Start in train operation, accelerate, at the uniform velocity, slide, subtract
During speed, braking, reversing, stopping etc. and in the case of the different zero loads of load, underloading, heavy duty, it can be formed on rail big
The very big operating current of small difference.The electric current overwhelming majority can flow back into power cathode by rail, and always have sub-fraction
Leaked into from the position of track and ground defective insulation in subgrade of metro and surrounding soil medium, form stray electrical current, be commonly called as ground
Iron fan flows, and stray electrical current passes through in the irregular flowing in underground, and the last overwhelming majority can also flow back into the anode of electric supply system.
There certainly exist few stray electrical current can not flow back into the anode of DC power supply, and be flowed as really fan.
Data is shown, when stray electrical current is 1A, corrodible 36kg lead, 11kg copper and 10kg iron in 1 year.In stray electrical
Drain off and disturb more serious area, electric current is up to tens amperes even hundreds of amperes, wall thickness 8~9mm steel pipes, then 2~3 months soon
It will perforate, therefore corrode caused by stray electrical current quite serious.In the subway system of DC voltage traction power supply, actual measurement knot
Fruit shows that the Stray current values that train flows into underground when starting and Accelerating running are generally greater than 100A.Again due to subway line
Road is grown, and the underground metalliferous structure of surrounding is more, and stray electrical current not only corrodes the reinforced concrete structure and subway of subway major project
Embedded metal pipeline in system, and corrode the various public metallic conduits in city.
With the increase of the metro operation time limit, the change of environment, the aging of insulating materials, the accumulation of track fall-out, together
When due to being influenced be subject to inevitable pollution, moist, infiltration, leak and train on factors such as the high forces of track, ground
The insulation degree on rail road and ground can also be deteriorated, make rail, insulation performance reduce or in advance safeguard procedures fail, thus have
A large amount of stray electrical currents are leaked into the soil media of surrounding, and relative to spontaneous corrosion, stray electrical current numerically wants big by tens
Times, or even thousands of times, and the electric current of spontaneous corrosion is spontaneous, corrosion rate is very slow, generally to pass through the corruption of long period
Erosion just it is observed that and stray electrical current numerical value is big, metal is corroded very fast, the pipeline for frequently suffering from stray current corrosion has
When some months just may perforate.
Since the stray electrical current of subway rail leakage has dispersiveness and unpredictability, both at home and abroad according to influencing ground
The analysis of iron stray electrical current size factor, using passive control method and a kind of active and effective control method proposed, design
The metro stray current analog compensation device that suitable laboratory uses, the device include the compensation power supply of stray electrical current simulator
Device.A final method for eliminating metro stray current harm is not found also so far both at home and abroad, so on this basis originally
Patent design has gone out the compensation power supply of suitable simulator.
Subway power supply trailer system both domestic and external all uses 750V or 1500V DC-voltage supplies substantially, and power rail connects electricity
The cathode in source, rail (doubling as return wire) connect the anode of power supply.And laboratory is not generally possible to provide so high power supply electricity
Pressure, i.e., the so high supply voltage of enabled offer are also uneconomical and dangerous to experimenter.Therefore, in experimental study rank
Section is simulated using low-voltage dc power supply.
The content of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of compensation power supply for metro stray current simulator
Circuit.
The present invention simulate in the lab metro stray current produce, the main purpose of leakage point and flow path be in order to
Demonstration:It is effective to prevention metro stray current that underground railway track, which carries out segmented current compensation,.As long as so design simulation device
It disclosure satisfy that analog orbit produces detectable stray electrical current in the case where simulating electric power thus supplied, the leakage feelings front and rear by contrasting compensation
Condition.
The way of the present invention is in a plastics or the container of organic glass making, fills some conductive Jie
Matter (water or soil) is simulated.
The present invention solves the concrete technical scheme that technical problem is taken：
A kind of compensation power circuit for metro stray current simulator, including unsteady flow filter module, sampling module,
Flow module, boost module, display module are expanded in current-limiting protection module, decompression.
Unsteady flow filter module is by 220V AC powers, transformer, the first diode VD1, the second diode VD2, the three or two
Pole pipe VD3, the 4th diode VD4, the first capacitance C1, first resistor R1 compositions.One termination 220V alternating currents of transformer primary side
The forward end in source, the negative end of another termination 220V AC powers of transformer primary side, a termination the one or two of transformer secondary
The positive terminal of the negative pole end of pole pipe VD1 and the 3rd diode VD3, the second diode of another termination VD2's of transformer secondary is negative
Extreme and the 4th diode VD4 positive terminal.The positive terminal of the positive terminal of first diode VD1 and the second diode VD2, first
The negative end of capacitance C1 is connected and is grounded with one end of first resistor R1；The negative pole end and the 4th diode of 3rd diode VD3
The other end connection of the negative pole end of VD4, the forward end of the first capacitance C1, first resistor R1.
Sampling module is by the 5th diode VD5, the first transistor G1, second resistance R2,3rd resistor R3, the 4th resistance R4
Composition.One end of base stage termination 3rd resistor R3 and one end of the 4th resistance R4 of the first transistor G1.The first transistor G1's
Emitter terminates the negative pole end of the 5th diode VD5 and one end of second resistance R2.The electricity of another termination the 4th of second resistance R2
Hinder the other end of R4, the other end of the cathode termination 3rd resistor R3 of the 5th diode VD5；The collector of the first transistor G1 with
The output terminal connection of unsteady flow filter module.
Current-limiting protection module is by the 6th diode VD6, second transistor G2, third transistor G3, the 4th transistor G4,
Five resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance
R11 is formed.
One end of 5th resistance R5 and the negative pole end of the 6th diode VD6, base terminal, the 8th resistance of the 4th transistor G4
One end of R8 and as the output terminal of current-limiting protection module.One end and second of the 6th resistance R6 of another termination of 5th resistance R5
The base terminal of transistor G2.The emitter of second transistor G2 terminates the positive terminal and the 7th resistance R7 of the 6th diode VD6
One end.The collector of second transistor G2 terminates one end of the 9th resistance R9.The other end and the 11st resistance of 9th resistance R9
One end of R11, the emitter of third transistor G3 are connected and are grounded.The tenth resistance R10's of another termination of 11st resistance R11
One end and the emitter terminal of the 4th transistor G4.The other end of the 8th resistance R8 of another termination of tenth resistance R10.4th crystal
The base terminal of the collector termination third transistor G3 of pipe G4.The other end of third transistor G3 collectors and the 6th resistance R6,
The other end of 7th resistance R7 is connected and is grounded.
Decompression expands flow module by integrated chip LM2596ADJ, the second capacitance C2, the 3rd capacitance C3, the 4th capacitance C4, the 5th
Capacitance C5, the 12nd resistance R12, the 13rd resistance R13, the first inductance L1, metal-oxide-semiconductor field effect transistor and the 7th diode VD7 compositions.
The forward end of second capacitance C2 forward ends and the 3rd capacitance C3, integrated chip LM2596ADJ input terminals Vi, MOS
The gate terminal of effect pipe connects and connects the output terminal of current-limiting protection module；The negative end of second capacitance C2 and bearing for the 3rd capacitance C3
It is grounded to end.The output end vo of the source electrode chip termination LM2596ADJ of metal-oxide-semiconductor field effect transistor, the drain electrode termination the of metal-oxide-semiconductor field effect transistor
One end of the positive terminal of seven diode VD7 and the first inductance L1.The negative pole end ground connection of 7th diode VD7.First inductance L1's
The other end is connected and is used as with forward end, one end of the 12nd resistance R12, the forward end of the 5th capacitance C5 of the 4th capacitance C4 and rises
The input terminal of die block.The negative end ground connection of 4th capacitance C4.The other end of 12nd resistance R12 is with chip LM2596ADJ's
FB ends, one end connection of the 13rd resistance R13.The other end ground connection of 13rd resistance R13.The negative sense termination of 5th capacitance C5
Ground.The No ends of chip LM2596ADJ and GND ends ground connection.
Boost module by integrated chip MC34063A, the 14th resistance R14, the 15th resistance R15, the 16th resistance R16,
17th resistance R17, the 18th resistance R18, the first potentiometer RP1, the 6th capacitance C6, the 7th capacitance C7, the 8th capacitance C8,
Two inductance L2, the 8th diode VD8 are formed.
14th resistance R14 one termination the 15th resistance R15 one end, No. 7 that are followed by integrated chip MC34063A
Pin.The 14th resistance R14 other ends are connected with the other end of the 15th resistance R15, No. 6 pins of integrated chip MC34063A
And connect Input voltage terminal.The forward end of a 6th capacitance C6 of termination of 16th resistance R16, the negative sense termination of the 6th capacitance C6
Ground.One end of the 17th resistance R17 of another termination and one end of the second inductance L2 of 16th resistance R16.17th resistance R17
Another termination integrated chip MC34063A No. 8 pins.The cathode of the 8th diode VD8 of another termination of second inductance L2
End, No. 1 pin for being followed by integrated chip MC34063A.The one of the negative pole end of 8th diode VD8 and the first potentiometer RP1
End, the forward end of the 8th capacitance C8 connect and do connects display as output.The negative end ground connection of 8th capacitance C8.First electricity
One end of the 18th resistance R18 of another termination of position device RP1, No. 5 pins for being followed by integrated chip MC34063A.18th electricity
Hinder the other end ground connection of R18.No. 2 pins ground connection of integrated chip MC34063A.The positive termination integrated chip of 7th capacitance C7
No. 3 pins of MC34063A, the negative end ground connection of the 7th capacitance C7.No. 4 pins ground connection of integrated chip MC34063A.
Display module is made of voltage display and Current Display.
Preferably, integrated chip AD637 modules replace unsteady flow filter module；The module includes integrated chip AD637, just
Negative 5V DC power supplies, the 19th resistance R19, the 9th capacitance C9, the tenth capacitance C10.The BUFFIN pins of integrated chip AD637 connect
The forward end of 9th capacitance C9 and one end of the 19th resistance R19.The negative end ground connection of 9th capacitance C9.19th resistance R19
The forward end of the tenth capacitance C10 of another termination and the RUSOUT pins of integrated chip AD637, the negative end of the tenth capacitance C10
Connect the CAV pins of integrated chip AD637.+ VS the pins of integrated chip AD637 meet positive 5V DC power supplies, integrated chip AD637
- VS pins connect negative 5V DC power supplies.The COMMON pins ground connection of integrated chip AD637.The DEVIN pins of integrated chip connect collection
BUFFOUT pins into chip connect the output of transformer as input as output, the VIN pins of integrated chip AD637.It is integrated
Other pins of chip AD637 are hanging.
Unsteady flow filter module expands the stable operating voltage of all kinds of circuits offers such as stream to decompression in the present invention, and stream is expanded in decompression
Module provides reliable operating current to all kinds of circuits such as boostings.Additional 51 microcontroller of synthetic circuit of the present invention
STC12C5A60S2 minimum systems carry out overcurrent protection, and 1062 liquid crystal displays are shown, and realize automatic power adjustment
Factor, into crossing test repeatedly, for different as a result, take appropriate measures, improves the feasibility and stability of system.
Brief description of the drawings
Fig. 1 is structural schematic block diagram；
Fig. 2 is orbital simulation module diagram；
Fig. 3 is unsteady flow filter module circuit diagram；
Fig. 4 is sampling module circuit diagram；
Fig. 5 is current limliting protection module circuit diagram；
Fig. 6 expands flow module circuit diagram for decompression；
Fig. 7 is boost module circuit diagram；
Fig. 8 is integrated chip AD637 module circuit schematics.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
The present invention specific embodiment as shown in drawings, a kind of benefit for metro stray current simulator shown in Fig. 1
The circuit structure schematic block diagram of the development of power supply is repaid, mainly unsteady flow filter module, sampling module, current-limiting protection module, decompression
Expand flow module, boost module, display module, orbital simulation module.
As shown in Fig. 2, orbital simulation module includes track, railway roadbed, sleeper, pipeline.
As shown in figure 3, ac filter module includes 220V AC powers, transformer, the first diode VD1, the two or two pole
Pipe VD2, the 3rd diode VD3, the 4th diode VD4, the first capacitance C1, first resistor R1.
In unsteady flow filter module circuit, the both ends for coupling isolating transformer are passed through the AC power of 220V.Transformer
A1 terminates the forward end of 220V AC powers, the negative end of the a2 termination 220V AC powers of transformer.B1, b2 end of transformer
As output, the negative pole end of the first diode VD1 and the positive terminal of the 3rd diode VD3 and the second diode VD2 are met respectively
The positive terminal of negative pole end and the 4th diode VD4.The cathode of first diode VD1 terminates the positive terminal of the second diode VD2, it
It is followed by the negative end of the first capacitance C1 and one end of first resistor R1.The negative end of first capacitance C1 and one end of first resistor R1
Ground connection.The anode of 3rd diode VD3 terminates the negative pole end of the 4th diode VD4, the forward end for being followed by the first capacitance C1 and
The other end of first resistor R1.Input signal of the output signal at the first capacitance C1 both ends as next module.This circuit is main
It is that the 220V alternating currents that will be provided are converted to the DC voltage and electric current used for circuit below.
As shown in figure 4, sampling module includes the 5th diode VD5, the first transistor G1, second resistance R2,3rd resistor
R3, the 4th resistance R4.
One end of the base stage termination 3rd resistor R3 and the 4th resistance R4 of the first transistor G1.The transmitting of the first transistor G1
The negative pole end of extreme 5th diode VD5 and one end of second resistance R2.The 4th resistance R4's of another termination of second resistance R2
The other end, the other end of the cathode termination 3rd resistor R3 of the 5th diode VD5, the collector of the first transistor G1 and a upper mould
The output terminal connection of block.
As shown in figure 5, current-limiting protection module includes the 6th diode VD6, second transistor G2, third transistor G3, the
Four transistor G4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance
R10, the 11st resistance R11.
5th resistance R5 one termination the 6th diode VD6 negative pole end and the 4th transistor G4 base terminal, be followed by
One end of 8th resistance R8.One end of the 6th resistance R6 of another termination of 5th resistance R5 and the base terminal of second transistor G2.
The emitter of second transistor G2 terminates the positive terminal of the 6th diode VD6 and one end of the 7th resistance R7.Second transistor G2
Collector terminate the 9th resistance R9 one end.One end of the 11st resistance R11 of another termination of 9th resistance R9, be followed by
Ground.One end of the tenth resistance R10 of another termination of 11st resistance R11 and the emitter terminal of the 4th transistor G4.Tenth resistance
The other end of the 8th resistance R8 of another termination of R10.The base terminal of the collector termination third transistor G3 of 4th transistor G4.
Emitter terminal and the collector terminal ground connection of third transistor G3, the other end ground connection of six resistance R6, the other end of the 7th resistance R7
Ground connection.
As shown in fig. 6, flow module is expanded in decompression includes chip LM2596ADJ, the second capacitance C2, the 3rd capacitance C3, the 4th electricity
Hold C4, the 5th capacitance C5, the 12nd resistance R12, the 13rd resistance R13, the first inductance L1, metal-oxide-semiconductor field effect transistor and the seven or two pole
Pipe VD7.
Expand in decompression in flow module circuit, the output signal of unsteady flow filter module is as the defeated of integrated chip LM2596ADJ
Enter signal, meet the input terminal Vi of integrated chip LM2596ADJ.The positive termination unsteady flow filtering of second capacitance C2 and the 3rd capacitance C3
The output terminal of module.The input terminal Vi of chip LM2596ADJ connects the forward end of the second capacitance C2 and the 3rd capacitance C3, be followed by
The gate terminal of metal-oxide-semiconductor field effect transistor.The negative end ground connection of second capacitance C2 and the 3rd capacitance C3.The output electricity of chip LM2596ADJ
As long as hundreds of milliamperes of stream, in order to have the function that the output current of the meaning of the question requirement, it is necessary to which external metal-oxide-semiconductor field effect transistor plays expansion stream.
The output end vo of the source electrode chip termination LM2596ADJ of metal-oxide-semiconductor field effect transistor, the drain electrode of metal-oxide-semiconductor field effect transistor terminate the 7th diode
One end of the positive terminal of VD7 and the first inductance L1.The negative pole end ground connection of 7th diode VD7.Another termination of first inductance L1
The forward end of 4th capacitance C4 and one end of the 12nd resistance R12, the forward end for being followed by the 5th capacitance C5.4th capacitance C4's
Negative end is grounded.The FB ends of another chip termination LM2596ADJ of 12nd resistance R12, be followed by the 13rd resistance R13 one
End.The other end ground connection of 13rd resistance R13.The negative end ground connection of 5th capacitance C5.The No ends of chip LM2596ADJ and GND
End ground connection.DC voltage big after rectifying and wave-filtering is mainly depressured by this circuit.Integrated chip LM2596ADJ has fine
Voltage regulation result, the output DC voltage stability of circuit can be made in 18V.Output DC current is set to reach 4A by expanding current circuit
Left and right.But in order to reach such output effect, it is necessary to by test repeatedly.It is to pass through especially to the first inductance L1
The method of winding inductor wire is met the inductance value of condition manually, and this guarantees the accuracy of circuit data.
As shown in fig. 7, boost module includes integrated chip MC34063A, the 14th resistance R14, the 15th resistance R15, the
16 resistance R16, the 17th resistance R17, the 18th resistance R18, the first potentiometer RP1, the 6th capacitance C6, the 7th capacitance C7,
8th capacitance C8, the second inductance L2, the 8th diode VD8.
In boost module circuit, the output signal end of decompression expansion flow module connects No. 6 pins of integrated chip MC34063A,
Input signal as this module, there is provided voltage, the electric current of circuit work.An in addition, termination the 15th of the 14th resistance R14
One end of resistance R15, No. 7 pins for being followed by integrated chip MC34063A.The 14th resistance R14 other ends and the 15th resistance
Another termination Input voltage terminal of R15, No. 6 pins for being followed by integrated chip MC34063A.A termination of 16th resistance R16
The forward end of 6th capacitance C6, the negative end ground connection of the 6th capacitance C6.The 17th resistance of another termination of 16th resistance R16
One end of R17 and one end of the second inductance L2.No. 8 pins of another termination integrated chip MC34063A of 17th resistance R17.
The positive terminal of the 8th diode VD8 of another termination of second inductance L2, No. 1 pin for being followed by integrated chip MC34063A.The
The anode of eight diode VD8 terminates one end of the first potentiometer RP1 and the forward end of the 8th capacitance C8, as the defeated of boost module
Outlet, external voltage, Current Display (oscillograph) observable voltage, current value (waveform), are required voltage, current value
(waveform).The negative end ground connection of 8th capacitance C8.One end of the 18th resistance R18 of another termination of first potentiometer RP1, afterwards
Connect No. 5 pins of integrated chip MC34063A.The other end ground connection of 18th resistance R18.No. 2 of integrated chip MC34063A are drawn
Foot is grounded.No. 3 pins of the positive termination integrated chip MC34063A of 7th capacitance C7, the negative end ground connection of the 7th capacitance C7.
No. 4 pins ground connection of integrated chip MC34063A.This circuit is mainly that will be depressured the 18V DC voltages for expanding flow module circuit output
It is raised to 36V and keeps stablizing.Change each component parameter repeatedly, most important of which is that the RSC (current limliting) in selection circuit
Resistance, makes the output current of circuit reach 2A.
The course of work：
Coupling isolating transformer input 220V AC voltage is given, it is by unsteady flow filter module that the alternating current progress of 220V is whole
Stream filtering.Filtered signal expands the input signal of flow module as decompression, and the big DC voltage after rectifying and wave-filtering is carried out
Decompression, stablizes in 18V, carries out expansion stream in the output additional metal-oxide-semiconductor of foot, the electric current for exporting decompression integrated chip LM2596-ADJ
Reach 4A, to ensure that the output of circuit below can reach requirement.The output signal of integrated chip LM2596-ADJ is depressured as liter
Press the input signal of integrated chip MC34063A.The output voltage current waveform of boost module circuit, note are observed by oscillograph
Peak value and average value are recorded, adjusts each parameter to change output voltage electric current, makes the DC voltage stability of output in 36V, output electricity
Stream rated value is 2A.In fact, for more accurate sampling and reality, in circuit can by single-chip minimum system into
Row current sample is so as to fulfill overcurrent protection, and sampled voltage, electric current carry out liquid crystal display with 1062.
The characteristics of of the invention maximum, first carries out decompression exactly by filtered voltage and expands stream, then boosts, is obtained more again
Stable Current Voltage, supplies analog orbit module.
Claims (2)
1. a kind of compensation power circuit for metro stray current simulator, including unsteady flow filter module, sampling module, limit
Flow protection module, flow module, boost module, display module are expanded in decompression；
Unsteady flow filter module is by 220V AC powers, transformer, the first diode VD1, the second diode VD2, the 3rd diode
VD3, the 4th diode VD4, the first capacitance C1, first resistor R1 compositions；One termination 220V AC powers of transformer primary side
Forward end, the negative end of another termination 220V AC powers of transformer primary side, first diode of termination of transformer secondary
The positive terminal of the negative pole end of VD1 and the 3rd diode VD3, the negative pole end of the second diode of another termination VD2 of transformer secondary
With the positive terminal of the 4th diode VD4；The positive terminal of the positive terminal of first diode VD1 and the second diode VD2, the first capacitance
The negative end of C1 is connected and is grounded with one end of first resistor R1；The negative pole end of 3rd diode VD3 and the 4th diode VD4's
The other end connection of negative pole end, the forward end of the first capacitance C1, first resistor R1；
Sampling module is by the 5th diode VD5, the first transistor G1, second resistance R2,3rd resistor R3, the 4th resistance R4 groups
Into；One end of base stage termination 3rd resistor R3 and one end of the 4th resistance R4 of the first transistor G1；The hair of the first transistor G1
Emitter-base bandgap grading terminates the negative pole end of the 5th diode VD5 and one end of second resistance R2；The 4th resistance of another termination of second resistance R2
The other end of R4, the other end of the cathode termination 3rd resistor R3 of the 5th diode VD5；The collector of the first transistor G1 and change
Flow the output terminal connection of filter module；
Current-limiting protection module is by the 6th diode VD6, second transistor G2, third transistor G3, the 4th transistor G4, the 5th electricity
Hinder R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11 groups
Into；
One end of 5th resistance R5 and the negative pole end of the 6th diode VD6, the base terminal of the 4th transistor G4, the 8th resistance R8
One end and as the output terminal of current-limiting protection module；One end of the 6th resistance R6 of another termination of 5th resistance R5 and the second crystal
The base terminal of pipe G2；The emitter of second transistor G2 terminates the positive terminal of the 6th diode VD6 and one end of the 7th resistance R7；
The collector of second transistor G2 terminates one end of the 9th resistance R9；The other end of 9th resistance R9 and the 11st resistance R11's
One end, the emitter of third transistor G3 are connected and are grounded；One end of the tenth resistance R10 of another termination of 11st resistance R11
With the emitter terminal of the 4th transistor G4；The other end of the 8th resistance R8 of another termination of tenth resistance R10；4th transistor G4
Collector termination third transistor G3 base terminal；The other end of third transistor G3 collectors and the 6th resistance R6, the 7th
The other end of resistance R7 is connected and is grounded；
Decompression expands flow module by integrated chip LM2596ADJ, the second capacitance C2, the 3rd capacitance C3, the 4th capacitance C4, the 5th capacitance
C5, the 12nd resistance R12, the 13rd resistance R13, the first inductance L1, metal-oxide-semiconductor field effect transistor and the 7th diode VD7 compositions；
The forward end of second capacitance C2 forward ends and the 3rd capacitance C3, integrated chip LM2596ADJ input terminal Vi, MOS field-effects
The gate terminal of pipe connects and connects the output terminal of current-limiting protection module；The negative end of second capacitance C2 and the negative end of the 3rd capacitance C3
Ground connection；The output end vo of the source electrode chip termination LM2596ADJ of metal-oxide-semiconductor field effect transistor, the drain electrode termination the seven or two of metal-oxide-semiconductor field effect transistor
One end of the positive terminal of pole pipe VD7 and the first inductance L1；The negative pole end ground connection of 7th diode VD7；First inductance L1's is another
End is connected with forward end, one end of the 12nd resistance R12, the forward end of the 5th capacitance C5 of the 4th capacitance C4 and is used as boosting mould
The input terminal of block；The negative end ground connection of 4th capacitance C4；The other end of 12nd resistance R12 and the FB ends of chip LM2596ADJ,
One end connection of 13rd resistance R13；The other end ground connection of 13rd resistance R13；The negative end ground connection of 5th capacitance C5；Chip
The No ends of LM2596ADJ and GND ends ground connection；
Boost module is by integrated chip MC34063A, the 14th resistance R14, the 15th resistance R15, the 16th resistance R16, the tenth
Seven resistance R17, the 18th resistance R18, the first potentiometer RP1, the 6th capacitance C6, the 7th capacitance C7, the 8th capacitance C8, the second electricity
Feel L2, the 8th diode VD8 composition；
14th resistance R14 one termination the 15th resistance R15 one end, No. 7 pins for being followed by integrated chip MC34063A；
The 14th resistance R14 other ends are connected and connect with the other end of the 15th resistance R15, No. 6 pins of integrated chip MC34063A
Input voltage terminal；The forward end of a 6th capacitance C6 of termination of 16th resistance R16, the negative end ground connection of the 6th capacitance C6；The
One end of the 17th resistance R17 of another termination and one end of the second inductance L2 of 16 resistance R16；17th resistance R17's is another
No. 8 pins of one termination integrated chip MC34063A；The positive terminal of the 8th diode VD8 of another termination of second inductance L2, it
It is followed by No. 1 pin of integrated chip MC34063A；One end of the negative pole end of 8th diode VD8 and the first potentiometer RP1, the 8th
The forward end of capacitance C8 is connected and done connects display as output；The negative end ground connection of 8th capacitance C8；First potentiometer RP1
The 18th resistance R18 of another termination one end, No. 5 pins for being followed by integrated chip MC34063A；18th resistance R18's
The other end is grounded；No. 2 pins ground connection of integrated chip MC34063A；The positive termination integrated chip MC34063A of 7th capacitance C7
No. 3 pins, the 7th capacitance C7 negative end ground connection；No. 4 pins ground connection of integrated chip MC34063A；
Display module is made of voltage display and Current Display.
2. a kind of compensation power circuit for metro stray current simulator according to claim 1, its feature exist
In：Integrated chip AD637 modules replace unsteady flow filter module；The module include integrated chip AD637, positive and negative 5V DC power supplies,
19th resistance R19, the 9th capacitance C9, the tenth capacitance C10；The BUFFIN pins of integrated chip AD637 connect the 9th capacitance C9's
One end of forward end and the 19th resistance R19；The negative end ground connection of 9th capacitance C9；Another termination of 19th resistance R19
The forward end of ten capacitance C10 and the RUSOUT pins of integrated chip AD637, the negative sense termination integrated chip of the tenth capacitance C10
The CAV pins of AD637；+ VS the pins of integrated chip AD637 connect positive 5V DC power supplies, and-VS the pins of integrated chip AD637 connect
Negative 5V DC power supplies；The COMMON pins ground connection of integrated chip AD637；The DEVIN pins of integrated chip connect integrated chip
BUFFOUT pins connect the output of transformer as input as output, the VIN pins of integrated chip AD637；Integrated chip
Other pins of AD637 are hanging.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523215.0A CN107919805B (en) | 2016-07-05 | 2016-07-05 | Compensation power supply circuit for subway stray current simulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610523215.0A CN107919805B (en) | 2016-07-05 | 2016-07-05 | Compensation power supply circuit for subway stray current simulation device |
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| Publication Number | Publication Date |
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| CN107919805A true CN107919805A (en) | 2018-04-17 |
| CN107919805B CN107919805B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548946A (en) * | 2018-06-27 | 2018-09-18 | 广州发展集团股份有限公司 | Stray electrical current simulator |
| CN116027214A (en) * | 2023-03-30 | 2023-04-28 | 湖北蓝博新能源设备股份有限公司 | Battery detection equipment and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247401Y (en) * | 2008-08-25 | 2009-05-27 | 中国矿业大学 | Apparatus for collecting and processing signal of subway stray current optical fiber sensing system |
| CN104427698A (en) * | 2013-08-31 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | Control circuit |
-
2016
- 2016-07-05 CN CN201610523215.0A patent/CN107919805B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247401Y (en) * | 2008-08-25 | 2009-05-27 | 中国矿业大学 | Apparatus for collecting and processing signal of subway stray current optical fiber sensing system |
| CN104427698A (en) * | 2013-08-31 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | Control circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548946A (en) * | 2018-06-27 | 2018-09-18 | 广州发展集团股份有限公司 | Stray electrical current simulator |
| CN108548946B (en) * | 2018-06-27 | 2023-09-05 | 广州发展集团股份有限公司 | Stray Current Simulator |
| CN116027214A (en) * | 2023-03-30 | 2023-04-28 | 湖北蓝博新能源设备股份有限公司 | Battery detection equipment and system |
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| Publication number | Publication date |
|---|---|
| CN107919805B (en) | 2023-11-17 |
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