CN203858337U - Portable 25Hz phase-sensitive track circuit simulation tester - Google Patents
Portable 25Hz phase-sensitive track circuit simulation tester Download PDFInfo
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- CN203858337U CN203858337U CN201420278494.5U CN201420278494U CN203858337U CN 203858337 U CN203858337 U CN 203858337U CN 201420278494 U CN201420278494 U CN 201420278494U CN 203858337 U CN203858337 U CN 203858337U
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- 238000004088 simulation Methods 0.000 title abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 9
- 230000000638 stimulation Effects 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
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Abstract
The utility model discloses a portable 25Hz phase-sensitive track circuit simulation tester. The tester comprises a DC power supply unit, a 25Hz sine wave signal generating unit, and a waveform signal control detection unit. The 25Hz sine wave signal generating unit comprises an inverter, a shaping transformer, and an output interface, wherein the input end of the shaping transformer is connected to the output end of the inverter output end through a power amplifier, and the output interface is connected to the output end of the shaping transformer. The waveform signal control detection unit comprises a CPU single-chip microcomputer controller and a digital display, wherein the digital display is connected to the communication interface of the CPU single-chip microcomputer controller. The control output end of the CPU single-chip microcomputer controller is separately connected to the input control ends of the inverter and the power supply controller. The input control end of the CPU single-chip microcomputer controller is connected to a voltage tune turn button and a start button. The waveform sampling signal input end of the CPU single-chip microcomputer controller is connected to the output end of the shaping transformer. The tester achieves simulation debug for the track circuits of the whole station field in advance.
Description
Technical field
The utility model relates to railway station track circuit electrical specification experiment tester, especially relates to portable 25H
zphase-sensitive track circuits stimulation tester.
Background technology
At railway 25H
zphase-sensitive track circuits equipment construction, change the outfit in process, as requested must be to railway 25H
zthe test that phase-sensitive track circuits carry out electrical specification detects, to ensure the safe and reliable of track circuit.At present, to railway 25H
zthe detection of phase-sensitive track circuits electrical specification adopts multimeter to carry out more.Due to multimeter can only test cable, break-make situation and the circuit voltage test of local line, and can not simulation test send, accept the relevant electric parameter of circuit, therefore have the following disadvantages: 1, in the time of newly-built circuit, when work business aspect, newly-built circuit does not put in place, railway station track temporarily do not lay in logical situation, and the installation and debugging of outdoor track circuit equipment cannot be carried out; 2, do not having in power supply situation, affect track circuit install after checking send, accept system and whether indoor, outdoor circuit connects, phase-sensitive track circuits polarity intersect whether correct; 3, can not be in advance to 25H
zthe electrical specification that phase-sensitive track circuits send, accept circuit is carried out part or system testing, test, therefore track circuit is accepted, transmitting system changes the outfit opening circuit of existing before a little bigger, short circuit, electric parameter be bad etc., wrong being difficult to found; 4, existing track circuit signalling arrangement overhaul, in repair in construction, the moment of standing, in utilization state, relates to the problem of transporting aspect safely, track circuit equipment, change the outfit can not connection test before a little bigger, poses a big pressure to electricity business engineering technical personnel; Therefore do not pound a little bigger phenomenon smoothly in the fault aspect Chang Fashengyin processing track circuit in a little bigger time that changes the outfit, had a strong impact on transportation by railroad production; 5, can not carry out verification to the local little circuit of relay assembly frame, cause finding in time construction and installation, connect the problem that distribution and electric parameter aspect exist.
Summary of the invention
The utility model object is to provide a kind of portable 25H
zphase-sensitive track circuits stimulation tester.
For achieving the above object, the utility model is taked following technical proposals:
Portable 25H described in the utility model
zphase-sensitive track circuits stimulation tester, comprises DC power source unit, 25H
zsine wave signal generating unit, waveform signal control detecting unit; AC and DC power supply changeover device and accumulator that described DC power source unit is in parallel by output terminal form; Described 25H
zsine wave signal generating unit comprises the shaping transformer that inverter, input end be connected with described inverter output end by power amplifier, the output interface that is connected in described shaping transformer output terminal; Described waveform signal control detecting unit comprises CPU singlechip controller, is connected in the nixie display of described CPU singlechip controller communication interface, the control output end of CPU singlechip controller is connected with the input control end of described inverter, power-supply controller of electric respectively, the input control end of CPU singlechip controller is connected with output voltage tuning knob and start button, and the waveform sampling signal input part of CPU singlechip controller is connected with shaping transformer output terminal; Described nixie display signal input part is connected with output interface by isolated component; Described power amplifier power supply input end is connected with DC power source unit output terminal by power-supply controller of electric, and the power input of described inverter is connected with DC power source unit output terminal; The power input of CPU singlechip controller, nixie display is connected with DC power source unit output terminal by Switching Power Supply respectively.
The sampled signal input end of described CPU singlechip controller is connected with the temperature sensor for detection of described power amplification actuator temperature; Described output interface is connected with the sampled signal input end of described CPU singlechip controller by isolation detection transformer; Described DC power source unit output terminal and output interface supply terminals sub-connection.
The utility model advantage is mainly reflected in following several respects:
1, realized a track circuit of entirely standing carried out to simulative debugging in advance, overcome in project installation, exist connect distribution short circuit, open circuit, incorrect mistake, greatly reduce staff a little bigger in work strain, situation that pressure is large.
2, be not subject to want aspect transport the restriction of point on line in operation, can be to 25H
zthe jobs such as phase-sensitive track circuits are tested, tested, adjustment, labor aptitude is strong;
3, can use accumulator to do power supply at the local work without alternating current 220V power supply, convenient at outdoor mobile working;
4, the 24V DC voltage of output, facilitate staff to the local circuit of indoor relay assembly frame test, test, proof-reading;
5, electricity business engineering staff can be by the 25H that is correlated with
zthe installation of phase-sensitive track circuits equipment, debugging are carried out complete before being operated in and changing the outfit a little louder, ready in advance for changing the outfit in point, have solved 25H
zafter the installation of phase-sensitive track circuits equipment, testing experiment is limited to the impact of transport aspect.
Brief description of the drawings
Fig. 1 is circuit principle structure block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 is the utility model sinusoidal wave pulse width sequence modulation signal and sinusoidal wave graph of a relation.
Embodiment
As shown in Figure 1, 2, portable 25H described in the utility model
zphase-sensitive track circuits stimulation tester, comprises DC power source unit A, 25H
zsine wave signal generating unit B, waveform signal control detecting unit C; AC and DC power supply changeover device 1 and accumulator 2 that described DC power source unit A is in parallel by output terminal form; Described 25H
zsine wave signal generating unit B comprises the shaping transformer 5 that inverter 3, input end are connected with described inverter 3 output terminals by power amplifier 4, the 25H of described shaping transformer 5 output terminals and output interface 6
zsine wave signal connection terminal connects; Described waveform signal control detecting unit C comprises CPU singlechip controller 7, is connected in the nixie display 8 of described CPU singlechip controller 7 communication interfaces, the control output end of CPU singlechip controller 7 is connected with the input control end of described inverter 3, power-supply controller of electric 9 respectively, the input control end of CPU singlechip controller 7 is connected with output voltage tuning knob and start button, and the waveform sampling signal input part of CPU singlechip controller 7 is connected with shaping transformer 5 output terminals; Described nixie display 8 signal input parts are by the supply terminals sub-connection of isolation sampled voltage mutual inductor and output interface 6; Described power amplifier 4 power inputs are connected with DC power source unit A output terminal by power-supply controller of electric 9, and the power input of described inverter 3 is connected with DC power source unit A output terminal; The power input of CPU singlechip controller 7, nixie display 8 is connected with DC power source unit A output terminal by Switching Power Supply 10 respectively; Described DC power source unit A output terminal and output interface 6 supply terminals sub-connections.For detection power amplifier 4 temperature and give temperature protection, the sampled signal input end of CPU singlechip controller 7 is connected with the temperature sensor for detection of described power amplifier 4 temperature; For realizing overvoltage, the overcurrent protection to power supply, the power supply terminal of output interface 6 is connected with the sampled signal input end of CPU singlechip controller 7 by isolation detection transformer 11.Cooling to this stimulation tester when reaching work is provided with cooling fan 12 in the housing of this stimulation tester.
Now by reference to the accompanying drawings the utility model principle of work is summarized as follows:
The utility model is to be the electron assistant testing tool that basis is designed based on electronics inverter technology.As shown in Figure 1, 2, Circuits System is made up of three parts ultimate principle, and its basic functional principle is as follows:
1, DC power source unit A, is mainly made up of AC and DC power supply changeover device 1, electronic switch power 10 and accumulator 2, and it act as system electronics circuitry working power and the certain DC voltage of output are provided.AC and DC supply convertor 1 is to adopt electronic switch power module, and function is that the power conversion of single-phase 220V input is become to the required direct current 12V of system electronics circuitry, 24V operating voltage.Electronic switch power 10 is DC/DC DC/DC conversion circuit, for the provide+12V of digital integrated circuit and electronic circuit in provide+15V of the Analogous Integrated Electronic Circuits in CPU singlechip controller 7 ,-15V operating voltage and CPU singlechip controller 7 ,-12V operating voltage, and be provide+12V of nixie display 8 ,-12V operating voltage; In outdoor on-the-spot mobile test and there is no the local work of alternating current 220V power supply, be provided with accumulator 2 for tester provides working power for convenience of staff, its output interface and AC and DC power supply changeover device 1 output interface are in parallel.AC and DC power supply changeover device 1 and accumulator 2 can use simultaneously.
The course of work of power-supply system: insert AC220V power supply, the output terminal of AC and DC power supply changeover device 1 produces direct current 24V, 12V voltage, after power-on master switch DK, open system circuit working switch again, direct current 24V adds the input end of DC/DC switching power circuit 10, just produce+15V of its output terminal ,-15V ,+12V ,-12V operating voltage, directly supply with CPU singlechip controller 7, general+12V ,-12V operating voltage are supplied with nixie display 8 simultaneously; Now CPU singlechip controller 7, nixie display 8 cpu chip are separately given the initialization of each circuit soft and hardware, and circuit system enters quiescent operation state.Open and close starting switch KQ, circuit enters dynamic behavior.
2,25H
zsine wave signal generating unit B is SPWM sinusoidal wave pulse power inverter main circuit.By power-supply controller of electric 9, the amplification of electronics inversion sinusoidal wave pulse signal, driving circuit 3, sinusoidal wave pulse power amplifier 4 and sinusoidal wave formation shaping transformer 5 and output interface 6 form respectively.Its principle of work is: the sinusoidal wave train pulse signal of SPWM being produced by CPU singlechip controller 7, send into the signal input part of electronic inverter 3 through parallel port data-interface, SPWM train pulse signal after amplifying is sent into the compound push-pull power amplifier 4 being made up of components and parts such as IGBT high-power FETs again, carries out Pulse Power Magnification.Positive and negative periodicity SPWM train pulse after its amplification, deliver to the primary coil of shaping transformer 5, after electromagnetic induction, output terminal at the secondary winding inductance L of shaping transformer 5 and the passive filtering network of capacitor C composition produces sinusoidal wave induced voltage, this voltage is delivered on the connection terminal of output interface 6, is the sine wave AC voltage of outputting standard.The cycle of the sinusoidal wave train pulse signal of SPWM of exporting due to CPU singlechip controller 7 is 25Hz signal, therefore the sine voltage frequency that output interface 6 is exported is just also 25Hz alternating voltage.The amplitude of voltage is determined by output voltage tuning knob.
3, waveform signal control detecting unit C is made up of CPU singlechip controller 7, nixie display 8, isolation detector (isolation detection transformer 11) and output circuit overvoltage, overcurrent, overheat sensor part.Its major function is for producing the sinusoidal wave train pulse signal of SPWM, and whether detection system circuit static, dynamic duty be normal, sends work order, shows frequency, voltage, the electric current of the sine wave alternating current that output interface 6 exports.
3.1, SPWM Sine Wave Pulse Width Modulation and the sinusoidal wave principle of work that produces:
Pulse-width signal and time sequential pulse signal that Sine Function Generator in CPU singlechip controller 7 produces are modulated, and the dutycycle of pulse width and recurrent interval width series is sorted by sinusoidal rule, produce Sine Wave Pulse Width Modulation signal.As shown in Figure 3,, in the time that sine value gradually changes by 0 to 1, the width of time sequential pulse strengthens gradually, and interpulse gap width is dwindled gradually; At sine value, by 1 to 0 o'clock, pulse width reduced gradually, and the recurrent interval strengthens gradually.This train pulse waveform is at the interval positive half period sequence waveform that produces of sine value (0～1,1～0); In the time that sine value (0～-1 ,-1～0) is interval, produce the negative half-cycle sequence waveform of paraphase, complete a train wave that sinusoidal cycles is required.Go round and begin again, the positive and negative periodic sequence waveform producing is exactly SPWM Sine Wave Pulse Width Modulation sequence signal.Be amplified to the pumping signal of certain energy through amplifying circuit, the compound push-pull power amplifier 4 that de-energisation is made up of IGBT field effect transistor carries out power amplification, then drive the passive filtering network (shaping transformer 5) being formed by inductor L, capacitor C, the sine voltage of generation standard is also delivered to output interface 6, for testing experiment track circuit.
3.2, CPU singlechip controller 7, taking 8 bit resolutions, double channel A/D conversion chip ADC0832 as CPU center processor, join the attached electronic circuits such as software program chip M27C256 and form, realize man-machine conversation, send the work orders such as output voltage, frequency, amplitude, paraphase; Isolation detection transformer 11 plays protection, monitoring system circuit working static state, multidate information effect; to after the signal conversion collecting, input CPU singlechip controller 7 through A/D modulus; send real-time working instruction by CPU singlechip controller 7, control SPWM Sine Wave Pulse Width Modulation, electronic inverter 3 are worked.Circuit protection aspect adopts isolation detection technology, isolation detection transformer 11, temperature sensor complete the information such as the transistor work of output circuit overcurrent, overload, short circuit, waveform distortion and power amplifier 4 is overheated are detected, and detection information is fed to CPU singlechip controller 7.
3.3, the tuning principle of work of output voltage: the analog voltage signal producing when turn output voltage tuning knob is delivered to CPU singlechip controller 7, convert numerical information to through A/D analog to digital converter, by 7 computings of CPU singlechip controller and modulate the sinusoidal wave train pulse width of SPWM and the dutycycle in recurrent interval.Pulse width is directly proportional to output voltage, and pulse width is wider, and the recurrent interval is less, and output voltage is higher; Otherwise more first, the recurrent interval is larger for pulse width, output voltage is lower.Namely potentiometer is in the time that 0～47K Ω changes, and output voltage changes with person between 0～250V, reaches the electrodeless adjustment of potentiometer and output voltage.
Claims (2)
1. a portable 25H
zphase-sensitive track circuits stimulation tester, comprises DC power source unit, 25H
zsine wave signal generating unit, waveform signal control detecting unit; It is characterized in that: AC and DC power supply changeover device and accumulator that described DC power source unit is in parallel by output terminal form; Described 25H
zsine wave signal generating unit comprises the shaping transformer that inverter, input end be connected with described inverter output end by power amplifier, the output interface that is connected in described shaping transformer output terminal; Described waveform signal control detecting unit comprises CPU singlechip controller, is connected in the nixie display of described CPU singlechip controller communication interface, the control output end of CPU singlechip controller is connected with the input control end of described inverter, power-supply controller of electric respectively, the input control end of CPU singlechip controller is connected with output voltage tuning knob and start button, and the waveform sampling signal input part of CPU singlechip controller is connected with shaping transformer output terminal; Described nixie display signal input part is connected with output interface by isolated component; Described power amplifier power supply input end is connected with DC power source unit output terminal by power-supply controller of electric, and the power input of described inverter is connected with DC power source unit A output terminal; The power input of CPU singlechip controller, nixie display is connected with DC power source unit output terminal by Switching Power Supply respectively.
2. portable 25H according to claim 1
zphase-sensitive track circuits stimulation tester, is characterized in that: the sampled signal input end of described CPU singlechip controller is connected with the temperature sensor for detection of described power amplification actuator temperature; Described output interface is connected with the sampled signal input end of described CPU singlechip controller by isolation detection transformer; Described DC power source unit output terminal and output interface supply terminals sub-connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278494.5U CN203858337U (en) | 2014-05-23 | 2014-05-23 | Portable 25Hz phase-sensitive track circuit simulation tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278494.5U CN203858337U (en) | 2014-05-23 | 2014-05-23 | Portable 25Hz phase-sensitive track circuit simulation tester |
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| Publication Number | Publication Date |
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| CN203858337U true CN203858337U (en) | 2014-10-01 |
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| CN201420278494.5U Expired - Fee Related CN203858337U (en) | 2014-05-23 | 2014-05-23 | Portable 25Hz phase-sensitive track circuit simulation tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983913A (en) * | 2014-05-23 | 2014-08-13 | 中铁七局集团电务工程有限公司 | Portable simulation tester for 25HZ phase-sensitive track circuits |
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- 2014-05-23 CN CN201420278494.5U patent/CN203858337U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983913A (en) * | 2014-05-23 | 2014-08-13 | 中铁七局集团电务工程有限公司 | Portable simulation tester for 25HZ phase-sensitive track circuits |
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Granted publication date: 20141001 |
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| CF01 | Termination of patent right due to non-payment of annual fee |