CN208796529U

CN208796529U - A kind of railway phase-sensitive track circuits training platform

Info

Publication number: CN208796529U
Application number: CN201721725899.9U
Authority: CN
Inventors: 黄斌; 陶汉卿; 莫振栋; 傅以盘; 蒋建华; 王兴仁
Original assignee: Liuzhou Railway Vocational Technical College
Current assignee: Liuzhou Railway Vocational Technical College
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2019-04-26
Anticipated expiration: 2027-12-12

Abstract

A kind of railway phase-sensitive track circuits training platform, which uses integrated structure design, including host computer, fault setting unit, micro power screen, combinational circuit and outdoor equipment, outdoor equipment include track transformer and rail；Host computer is used for training operation, and combinational circuit is used to simulate the control to outdoor equipment, and fault setting unit is used for fault setting or reparation, and micro power screen is for providing the working power of track power supply, locally supplied power source and training platform internal circuit.The training platform establishes 2 section track circuits, it is consistent with scene, it is implementable to Railway Site failure real simulation, have the function of that voltage manually adjusts and automatic voltage regulation, microelectronics and two kinds of phase-sensitive track circuits free switchings of relay can be easily carried out, realizes that, to two kinds of phase-sensitive track circuits fault simulations, setting and the reparation of failure are completed on host computer, efficiency of teaching is high, can meet needs of the Railway Higher Vocational Education universities and colleges about the experimental real-training practical teaching of phase-sensitive track circuits.

Description

A kind of railway phase-sensitive track circuits training platform

Technical field

The utility model relates to a kind of railway teaching, training equipment, in particular to a kind of to be suitable for Higher Vocational College, iron The railway phase-sensitive track circuits training platform of road enterprises and institutions Field Force rail traffic enterprise progress technical training.

Background technique

With China express railway, the further development of urban track traffic, phase-sensitive track circuits are wide in rail traffic General application, phase-sensitive track circuits are mainly that Railway Site provides train occupation inspection and rail integrity checking function, in state's iron It is upper mainly to apply 25Hz track circuit, using 25Hz primarily to avoiding locomotive traction 50Hz current interference, and in city rail In road traffic, since most subway rail roads circuit carries out locomotive traction using direct current, traction current interference is not present, therefore Using 50Hz or 25Hz.

Due to the importance of phase-sensitive track circuits, Adaptation of Higher Vocational School Students must securely grasp phase-sensitive track circuits principle, Most common failure and fault handling method, and railway is had been formed with phase-sensitive track circuits, or uses relay phase-sensitive track circuits, or Using microelectronic phase-sensitive track circuits, and do not allow to operate in the case of non-faulting, thus can only theoretical property introduction, can not Meet field research demand.

Existing railway equipment has the disadvantage that teaching, training

1. when fault simulation, always artificially cutting route, frequently plugging relay, efficiency of teaching is low, even results in equipment Damage；

2. personnel training will be docked with enterprise for school, a set of equipment cannot be directed to two kinds of phase-sensitive track circuits；

3. Railway Site personnel abide by three motionless principles, the equipment being unable in operation element, skill improvement is limited；

4. Railway Site power supply panel output voltage is fixed, over-voltage and undervoltage condition can not be simulated.

Utility model content

The purpose of this utility model is to provide a kind of railway phase-sensitive track circuits training platforms, to overcome prior art institute Above shortcomings.

The technical scheme adopted by the utility model is that:

A kind of railway phase-sensitive track circuits training platform, the platform use integrated structure design, including host computer, failure Setting unit, micro power screen, combinational circuit and outdoor equipment, the outdoor equipment include track transformer and rail；

The host computer and fault setting list and be electrically connected, combinational circuit simultaneously with fault setting unit and outdoor equipment electricity Connection, micro power screen are electrically connected with combinational circuit；

The combinational circuit is used to simulate control to outdoor track section, including the combination of relay phase-sensitive track circuits with The combination of microelectronic phase-sensitive track circuits, the relay phase-sensitive track circuits combination and the combination of microelectronic phase-sensitive track circuits It is 2 groups, is separately connected the outdoor equipment of 2 track sections, when there is vehicle to occupy a wherein section, the section combinational circuit Indicating relay is fallen, and when train goes out the clear section, the indicating relay of the section combinational circuit is picked up；

The fault setting unit is by PC control, for completing the setting or reparation of combinative network's faults point, failure Setting unit includes mainboard and N block faulty board, and the quantity N of faulty board and the setting quantity of fault point are corresponding；

Faulty board is the execution part of fault setting or reparation, and mainboard is the core of fault setting unit, and mainboard is by connecing It receives the power transfer relay that host computer order comes in driving malfunction plate to pick up or fall, realizes the setting or reparation of fault point；

The micro power screen includes system power supply plate, alternating current-direct current plate, track power panel and local power panel；

The system power supply plate includes power circuit I, CPU1 circuit and CPU2 circuit；

Power circuit I includes ACDC24 module, ACDC12 module and DC24-05 module；

ACDC24 module is used to the city 220V be 24V direct current for convert alternating current, is the instruction relay in combinational circuit Device, microelectronics receiver and warning box provide working power；

ACDC12 module be used for the city 220V for convert alternating current be 12V DC electricity, for alternating current-direct current plate, track power panel and Locally supplied power source's plate provides working power；

DC24-05 module is used to 12V DC electricity is transformed to the CPU1 circuit and CPU2 that 5V direct current is system power supply plate Circuit provides working power；

CPU1 circuit is first is that the office that railway voltage signal VGC and local power panel for sending to track power panel are sent Portion voltage signal VJC carries out analog-to-digital conversion and detection；Second is that for judging whether detected voltage value meets the requirements, if discontented Foot then passes through the I/O port information relatively low or higher to CPU2 circuit output；

Third is that for showing track power supply and locally supplied power source's voltage；

CPU2 circuit is first is that be conveyed to track power panel and locally supplied power source for completing the SPWM wave that four road high level are 5V Driving circuit in plate, driving circuit export the SPWM wave that high level is 12V, are conveyed to inverter circuit；

Second is that the information relatively low or higher according to the track power supply of CPU1 circuit conveying and local supply voltage, passes through adjusting The duty ratio of SPWM wave realizes the adjusting of voltage: voltage value is relatively low, reduces the duty ratio of SPWM wave to improve track power supply Output amplitude, voltage value is higher, increases the duty ratio of SPWM wave to reduce the output amplitude of track power supply；

Third is that being shown to the phase difference of track power supply and locally supplied power source；

The alternating current-direct current plate includes ac-dc conversion circuit, power converting circuit I, delay control circuit and delay relay Device；

Ac-dc conversion circuit is used to that 350V direct current will to be transformed to after the rectified current limliting with filtering of 250V alternating current；

Power converting circuit I is used to the 12V DC electricity from system power supply plate being transformed to 5V direct current, is delays time to control Circuit provides working power；

Delay control circuit is picked up for controlling time-delay relay delay, so that the capacitor in ac-dc conversion circuit be made to fill Electric current-limiting resistance short circuit, to guarantee ac-dc conversion circuit output voltage power stability；

The track power panel is identical as the hardened structure of locally supplied power source including power converting circuit II, inverter circuit, driving electricity Road, voltage detecting circuit and over-current detection circuit；

Power converting circuit II is used to the 12V DC electricity from system power supply plate switching to 5V direct current, be inverter circuit, Driving circuit, voltage detecting circuit and over-current detection and short-circuit protection circuit provide working power；

Inverter circuit be used for by the 350V direct current that ac-dc conversion circuit is sent be changed into frequency be 25HZ 220V or 110V alternating current, 220V alternating current are used for track power supply, and 110V alternating current is used as locally supplied power source；

Driving circuit is used to control the high-voltage pulse that inverter circuit output carries 25Hz alternating current, by generating after filtering Frequency 25HZ AC power source；

Voltage detecting circuit is for detecting the i.e. track transformer both end voltage, and automatic voltage regulation of load；

Over-current detection circuit is used to detect the size of the electric current of inverter circuit output, and high level is exported if excessive to be made to drive Dynamic circuit stops working, and inverter circuit cut-off is cut off the power, and realizes the protection to inverter circuit；

The track power panel is different from locally supplied power source's plate output voltage, and track power panel exports 25HZ/220V alternating current As track power supply, locally supplied power source's plate exports 25HZ/110V alternating current as locally supplied power source.

Its further technical solution is:

The CPU2 circuit of the system feeding plate includes CPU2 chip, phase difference display charactron, downloading mouth wiring, number Encode knob and external condition output；The CPU1 circuit includes singlechip CPU 8-16, charactron SMG and charactron SMG1:

The phase difference shows the 1 foot ground connection of charactron, and 5 feet connect 5V direct current, 2,3,4 feet connect respectively CPU2 chip 1, 2,3 foot；The 2 feet ground connection of mouth wiring is downloaded, 1 foot connects 5V direct current, and 3,4 feet connect the 13 of CPU2 chip, 14 feet respectively；Digital coding 5 feet of knob are grounded, and 4 feet connect 5V direct current, and 3 feet connect 17 feet of CPU2 chip, and 1 foot connects 15 feet of CPU2 chip, and 2 feet meet CPU2 16 feet of chip；The 1 foot ground connection of external condition output, 2,3,4,5 feet connect 28,27,26,25 feet of CPU2 chip respectively；

24 feet, 23 feet, 22 feet and 20 feet of CPU2 chip connect the input terminal of driving circuit respectively, are to its input high level The SPWM wave of 5V, 4,5,6,7 feet of CPU2 chip connect four I/O communication interfaces of the singlechip CPU 8-16 of CPU1 circuit respectively The foot of i.e. 3,2,13 and 15 is to realize data communication；

10 feet and 12 feet of singlechip CPU 8-16 integrate with the voltage detecting circuit of power panel and local power panel respectively Output end, 15 foot of I/O communication interface and 13 feet connect 6 feet and 7 feet of the CPU2 chip of CPU2 circuit respectively；

Singlechip CPU 8-16 is first is that railway voltage signal VGC and local power panel for sending to track power panel are sent The local voltage signal VJC come carries out analog-to-digital conversion and detection；Second is that for judging whether detected voltage value meets the requirements, such as Fruit is unsatisfactory for, then the information relatively low or higher to CPU2 circuit output by 15 foot of I/O port and 13 feet；

Charactron SMG and charactron SMG1 is respectively used to display track power supply and locally supplied power source's voltage.

It is further:

The inverter circuit includes local upper end metal-oxide-semiconductor, local lower end metal-oxide-semiconductor, track upper end metal-oxide-semiconductor, lower end of track MOS Pipe, inductance coil L3, inductance coil L4, resistance R56, resistance R57, resistance R58, resistance R59, resistance R60, resistance R61, resistance R62, resistance R63, diode D18, diode D19, diode D20 and diode D21；

Resistance R56, resistance R57, resistance R60 and resistance R61 are current-limiting resistance, diode D18, diode D19, diode D20 and diode D21 is freewheeling diode, and resistance R58, resistance R59, resistance R62 and resistance R63 are loop resistance, resistance R65 For detection resistance, output end exports fed-back current signals IFB to over-current detection circuit；

SPWM wave I and SPWM wave II come the driving circuit first via switch driving chip have identical frequency, phase Opposite high level is the SPWM wave of 12V, and SPWM wave III and SPWM wave IV carry out driving circuit the second way switch driving chip With identical frequency, opposite in phase SPWM wave, IV frequency phase of SPWM wave II and SPWM wave III and SPWM wave I and SPWM wave Same, opposite in phase；

Direct current DC350 comes from ac-dc conversion circuit.

Further,

The driving circuit is made of the identical switch driving circuit of two-way, and core devices are switch driving core Piece, 12,14 feet of the first way switch driving chip connect 24 feet and 23 feet of CPU2 chip respectively, and input two-way high level is 5V's SPWM wave, the SPWM wave I and SPWM wave II for being respectively 12V from 1 foot and 8 feet output two-way high level, gives the office of inverter circuit Subordinate end metal-oxide-semiconductor and local upper end metal-oxide-semiconductor, control its on or off, so that output carries the high-tension pulse of 25Hz alternating current Punching；

12,14 feet of the second way switch driving chip connect 22 feet and 20 feet of CPU2 chip respectively, input two-way high level For the SPWM wave of 5V, the SPWM wave III and SPWM wave IV for being respectively 12V from 1 foot and 8 feet output two-way high level give inversion electricity The lower end of track metal-oxide-semiconductor and track upper end metal-oxide-semiconductor on road, control its on or off, so that output carries 25Hz alternating current High-voltage pulse；

5V power supply comes from power converting circuit, and 12V power supply comes from system power supply plate.

Further,

The voltage detecting circuit includes voltage transformer and half-wave rectifying circuit, 1 foot of input terminal of voltage transformer and 2 Foot connects present load i.e. track transformer both end voltage, and 5 foot of output end of voltage transformer and 4 feet connect half-wave rectifying circuit, and half Wave rectification circuit detects the CPU1 circuit that rectified direct current sends system feeding plate back to.

Further,

The over-current detection circuit includes voltage comparator, controllable reference power supply, CPU3 chip and amplifying circuit, described Amplifying circuit is made of operational amplifier, resistance R73, resistance R74 and capacitor C38；

5V direct current connects 1 foot of controllable reference power supply by resistance R71, and 1 foot of controllable reference power supply connects voltage comparator 2 feet input high precision electro potential source, 3 feet of operational amplifier meet the detection resistance R65 in inverter circuit by resistance R75 and export End, with input feedback current signal, 7 foot of output end of operational amplifier connects 3 feet of voltage comparator, 7 feet of voltage comparator Connect 7 feet of CPU3 chip；

Controllable reference power supply is for exporting 2.5V direct current as fiducial value, and amplifying circuit is for amplifying inverter circuit input Fed-back current signals, CPU3 chip be used for comparison result calculation process；

8 feet of CPU3 chip connect the first switch driving chip of driving circuit and 13 feet of second switch driving chip, use When electric current is excessive export high level make its by.

Further,

The fault setting unit mainboard includes power circuit II, cpu chip, failure indicating circuit and serial communication electricity Road；

The power circuit II is used to alternating current be converted to 5V direct current, is that cpu chip, failure indicating circuit and serial ports are logical Believe that circuit provides working power；

The cpu chip is mainly used for completing communication and driving, by the data received from serial communication, according to processing As a result output drive signal drives the power transfer relay of corresponding faulty board to pick up or fall；

The serial communication circuit is used to the order received from host computer being transmitted to cpu chip；

The failure indicating circuit is connected to 34,33,32 and 31 feet of cpu chip, exists when for showing communication Failure, to analyze；

The faulty board includes the first driving chip, the second driving chip, serial ports turns parallel port chip I and serial ports turns parallel port core Piece II and power transfer relay circuit；First driving chip and the second driving chip use ULN2803 chip, the serial ports Turn parallel port chip I and serial ports turn parallel port chip II and uses 74HC595 chip, two pieces of 74HC595 chip cascades:

Serial ports, which turns parallel port chip I, to be connected with 10 feet that serial ports turns parallel port chip II and is followed by power supply VCC5；

Serial ports, which turns parallel port chip I, connects 5 foot of output I/O mouth of cpu chip with 11 feet that serial ports turns parallel port chip II, intermediate Series resistor R21 current limliting；

Serial ports, which turns parallel port chip I, connects 6 foot of output I/O mouth of cpu chip with 12 feet that serial ports turns parallel port chip II, intermediate Series resistor R22 current limliting；

Serial ports, which turns parallel port chip I, connects 7 foot of output I/O mouth of cpu chip with 14 feet that serial ports turns parallel port chip II, intermediate Series resistor R23 current limliting；

15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet that serial ports turns parallel port chip I connect the first drive respectively 8 feet, 7 feet, 6 feet, 5 feet, 4 feet, 3 feet, 2 feet and 1 foot of dynamic chip, serial ports turn 15 foot of delivery outlet, 1 foot, 2 of parallel port chip II Foot, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet connect 8 feet, 7 feet, 6 feet, 5 feet, 4 feet, 3 feet, 2 feet and 1 foot of the second driving chip respectively；

The power transfer relay circuit includes power transfer relay JDQ and is attempted by anti-between 1 foot of power transfer relay and 2 feet Voltage rectifier, 2 foot input terminal of power transfer relay concatenate light emitting diode and current-limiting resistance, 3, the 4 feet connection of power transfer relay The cut-off point both ends of fault point；

The back-pressure preventing diode of 16 groups of power transfer relay circuits includes diode D1~diode D16, for absorbing relay The electromotive force that line coil generates when device is fallen, current-limiting resistance includes resistance R1~resistance R16, and light emitting diode includes diode D101~diode D116, light emitting diode is relay status indicator light, bright when power transfer relay picks up；

The cpu chip of mainboard uses STC15W4K chip, and 8 Bits Serial data feeding serial ports is turned parallel port by STC15W4K chip 14 feet of chip I, 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet for turning parallel port chip I from serial ports are defeated side by side 8 data enter the first driving chip out, and 8 Bits Serial data feeding serial ports is turned the 14 of parallel port chip II by STC15W4K chip Foot, 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet for turning parallel port chip II from serial ports export 8 data side by side Into the second driving chip, after driving chip, exporting, there is data the signal of load capacity to directly drive power transfer relay The power transfer relay of circuit, the setting of achievable 16 fault points of every piece of faulty board, respectively drives 16 groups of power transfer relay circuits Power transfer relay.

Further,

2 groups of relays phase-sensitive track circuits composite structure is identical, and every group includes sending end and receiving end, and sending end includes Fuse RD1, fuse RD2, fuse DLQ1, fuse DLQ2, track transformer BG25 I, track resistance, receiving end include Relay transformer BG25 II, protection box, lightning protection device and section indicating relay, that is, relay of binary two；

The track transformer input terminal of sending end connects 25HZ, 220V track power supply of micro power screen by fuse, Output end connects rail through track resistance, and the relaying transformer inputs of receiving end connect rail, and relay transformer output end connects The input terminal 3 and 4 of two relays of binary is connect, 25HZ, 110V locally supplied power source of micro power screen connect two relays of binary Input terminal 1 and 2；

The protection box and lightning protection device are connected in parallel between two relay input terminals 3 and 4 of binary, two relays of binary Input terminal 1 and 2 between shunt capacitance C；

The relay phase-sensitive track circuits combination of first section sets 21 fault points, and third section sets 21 fault points；

2 groups of microelectronics phase-sensitive track circuits composite structure is identical, and every group includes sending end and receiving end, sending end packet Include fuse RD1, fuse RD2, fuse DLQ1, fuse DLQ2, track transformer BG25 I, track resistance, receiving end packet Include relay transformer BG25 II, protection box, lightning protection device, receiver I and receiver II, transformer box, warning box, capacitor C and area Section indicating relay, that is, track relay；

The track transformer input terminal of sending end connects 25HZ, 220V track power supply of micro power screen by fuse, Output end connects rail through track resistance；

II input terminal of relay transformer BG25 of receiving end connects rail, and relay transformer output end connects transformer box Input terminal 71 and 81, transformer box export two-way power supply, connect the input terminal 73 and 83 of receiver I all the way, and another way connects The input terminal 73 and 83 for connecing receiver II, 25HZ, 110V locally supplied power source connection of the micro power screen from micro power screen The input terminal 51 of receiver I and receiver II, 61 ends, 24V direct current electrical connection receiver I and reception from micro power screen The terminal 72 and 82 of device II；32 parallel connection of terminal of receiver I and receiver II is followed by the terminal 1 of track relay electromagnetic coil, 42 parallel connection of terminal of receiver I and receiver II is followed by track relay electromagnetic coil terminal 4, receiver I and receiver II Terminal 31 and 41 is separately connected alarm；

Protection box and lightning protection device are connected in parallel between the input terminal 71 and 81 of transformer box；

The microelectronic phase-sensitive track circuits combination of first section sets 76 fault points, and third section sets 75 fault points.

Further,

The fuse RD1 and fuse RD2 and fuse DLQ1 of relay phase-sensitive track circuits combination sending end and It is connected by female plug F1 with male plug F2 between fuse DLQ2:

That is a termination 220V track power supply of fuse RD1 and fuse RD2, another terminal F- for terminating at male plug F2 On the terminal F-2-2 of 2-1 and male plug F2；One end of fuse DLQ1 and fuse DLQ2 connect the input terminal of track transformer, separately On the terminal F-1-1 and terminal F-1-2 of one end Jie female plug F1；

Relay phase-sensitive track circuits combine two output ends and the both ends lightning protection device Z of the relay transformer BG25 II of receiving end Point is connected by female plug F1 with male plug F2:

I.e. two outputs of relay transformer BG25 II terminate on the terminal F-1-3 and F-1-4 of female plug F1, lightning protection device Z two It terminates on the terminal F-2-3 and F-2-4 of male plug F2；

Relay phase-sensitive track circuits combine receiving end two relays of binary, two input terminal 1 and with input terminal 2 and office The input terminal JJZ and input terminal JJF of portion's power supply are connected by female plug F1 with male plug F2:

That is the input terminal JJZ and input terminal JJF of locally supplied power source are connect respectively on the terminal 01-17 and 01-18 of female plug F1, and two The input terminal 1 and input terminal 2 of first two relays connect on the terminal 03-17 and 03-18 of male plug F2；

Fuse RD1, fuse RD2 and the fuse DLQ1 of the microelectronic phase-sensitive track circuits combination sending end, Fuse DLQ2 is connected by female plug F1 with male plug F3:

That is one end of fuse RD1 and fuse RD2 integrates with power input GJZ and input terminal GJF respectively, the other end It connects on the terminal F-3-1 and terminal F-3-2 of male plug F3；

One end of fuse DLQ1 and fuse DLQ2 connect the input terminal of track transformer, another end for terminating at female plug F1 On sub- F-1-1 and terminal F-1-2；

Two output ends and lightning protection device Z two of the relay transformer BG25 II of the microelectronic phase-sensitive track circuits receiving end Endpoint is connected by female plug F1 with male plug F3:

I.e. two output ends of relay transformer BG25 II are connect respectively on the terminal F-1-5 and F-1-6 of female plug F1, lightning protection device Z two-end-point is connect respectively on the terminal F-3-5 and F-3-6 of male plug F3；

Microelectronic phase-sensitive track circuits combine the receiver I of receiving end and 51 feet of receiver II and 61 feet and part electricity The input terminal JJZ and input terminal JJF in source are connected by female plug F1 with male plug F3:

That is the input terminal JJZ and input terminal JJF of locally supplied power source are connect respectively on the terminal 03-6-1 and 03-8-1 of female plug F1, 51 feet and 61 feet of receiver I and receiver II are connect respectively on the terminal 03-6-3 and 03-8-3 of male plug F3；

72 feet and 82 feet of the receiver I and receiver II and the positive input terminal KZ and negative input end of 24V DC power supply KF is connected by female plug F1 with male plug F3:

That is the positive input terminal KZ and negative input end KF of 24V DC power supply meet the terminal 03-1-1 and 03- in female plug F1 respectively On 3-1,72 feet and 82 feet of receiver I and receiver II are connect respectively on the terminal 03-1-3 and 03-3-3 of male plug F3；

When being combined using relay phase-sensitive track circuits, male plug F2 is injected on female plug F1；Use microelectronic phase sensitivity rail When road electrical combination, male plug F3 is injected on female plug F1；The F2 being inserted on female plug F1 is exchanged with F3, can be realized relay with The switching of two kinds of phase-sensitive track circuits of microelectronics.

Due to taking above-mentioned technical proposal, a kind of railway phase-sensitive track circuits training platform of the utility model has following The utility model has the advantages that

1. the training platform realizes that the setting of fault point, the setting and reparation of failure are complete on host computer using computer At, it is not necessary to again using the plug frequent operation to equipment, the damage to field device was not only avoided, but also greatly improve teaching Efficiency meets needs of the Railway Higher Vocational Education universities and colleges about the experimental real-training practical teaching of phase-sensitive track circuits:

2. training platform establishes 2 section track circuits, 2 complete combinations are consistent with scene, can complete 25HZ On the basis of the basic function (train occupation inspection, rail integrity checking and fault alarm) of phase-sensitive track circuits, implementation pair Railway Site failure real simulation, host computer can realize that practice is combined with examination (technical ability tourney), manually adjust with voltage With automatic voltage regulation function, host computer can carry out fault simulation to two kinds of phase orbit circuits of microelectronics and relay, be really achieved Training goal, thus better service can be provided for rail traffic enterprise Enterprise Staff progress skills training, technical ability tourney；

3. the training platform is capable of providing two kinds of power supplys of track power supply and locally supplied power source, be able to carry out track supply voltage, Locally supplied power source's voltage, frequency and phase difference adjustment, be able to carry out the adjustment of track power supply and locally supplied power source, real-time display track Power supply, locally supplied power source's voltage, frequency and phase difference, are conveniently checked, improve teaching efficiency；

4. the microelectronics of the training platform and two kinds of phase-sensitive track circuits of relay and track power supply, locally supplied power source and outer It is connected by male plug with female plug between portion's equipment, can easily realize the freedom of microelectronics Yu two kinds of phase-sensitive track circuits of relay Switching；A set of equipment can be imparted knowledge to students, be trained for two kinds of phase-sensitive track circuits, not only save the cost, but also improve teaching, training Instruct efficiency；5. the training platform has the function of short-circuit protection, over-voltage over-current protection, securely and reliably；The microelectronic phase sensitivity rail Road circuit is in parallel using two sets of receiver JXW-25B, realizes equipment redundancy, it is ensured that system reliability service, while being often arranged report Alert device is alarmed when receiver JXW-25B input fault or internal fault by 31,41 end output driving alarms.

Detailed description of the invention

Fig. 1 is the railway phase-sensitive track circuits training platform functional block diagram of the utility model；

Fig. 2 is faulty board circuit connection diagram；

Fig. 3-Fig. 5 is 16 groups of power transfer relay circuit connection diagrams；

Fig. 6 is the mainboard chip circuit diagram of fault setting module；

Fig. 7 is II circuit connection diagram of power circuit of fault setting module；

Fig. 8 is the serial communication circuit connection figure of fault setting module；

Fig. 9 is the ac-dc conversion circuit connection figure of alternating current-direct current plate；

Figure 10 is the delay control circuit connection figure of alternating current-direct current plate；

Figure 11 is I connection figure of power converting circuit of alternating current-direct current plate；

Figure 12 is power circuit (ACDC24 module, ACDC12 module, DC24-05 module) circuit connection of system feeding plate Figure；

Figure 13 is the CPU1 circuit connection diagram of system feeding plate；

Figure 14 is the CPU2 circuit connection diagram of system feeding plate；

Figure 15 is the inverter circuit connection figure of track power panel and locally supplied power source's plate；

Figure 16 is II connection figure of power converting circuit of track power panel and locally supplied power source's plate；

Figure 17 is the driving circuit connection figure of track power panel and locally supplied power source's plate；

Figure 18 is the voltage detecting circuit connection figure of track power panel and locally supplied power source's plate；

Figure 19 is the over-current detection circuit connection figure of track power panel and locally supplied power source's plate；

Figure 20 is the cpu circuit connection figure of track power panel and locally supplied power source's plate；

Figure 21 is that the relay phase-sensitive track circuits of combinational circuit combine (the first section) circuit connection diagram；

Figure 22 is that the relay phase-sensitive track circuits of combinational circuit combine (third section) circuit connection diagram；

Figure 23 is that the microelectronic phase-sensitive track circuits of combinational circuit combine (the first section) circuit connection diagram；

Figure 24 is that the microelectronic phase-sensitive track circuits of combinational circuit combine (third section) circuit connection diagram；

In figure:

(1) composed structure code name:

101-host computers, 102-fault setting units, 1021-failure indicating circuits, 103-micro power screens, 104-combinational circuits, 105-outdoor equipments；

(2) component code name:

RX-track resistance, HF4-protection box, ZA-lightning protection device, HBJ-transformer box, HB-warning box,

Q5-track upper end metal-oxide-semiconductor, Q6-lower end of track metal-oxide-semiconductor, Q7-part upper end metal-oxide-semiconductor, Q8-part lower end MOS Pipe；

Two relays of RGJ-binary (the first section is 1DGRGJ, and third section is 3DGRGJ), GJ-track relay (the first section is 1DGGJ, and third section is 3DGGJ), JDQ1~JDQ16-power transfer relay；

R0-track transformer load, LCTV-voltage transformer；

PHC-phase difference shows charactron, JTG-downloading mouth wiring, FOR-digital coding knob, XZK-external condition Output；

The controllable reference power supply of LM393-voltage comparator, TL431-, LM358-operational amplifier；

JXW-25B-1-receiver I, JXW-25B-2-receiver II, NE555-timer；

STC15W4K-mainboard cpu chip,

STC15W-CPU3 chip, STC-CPU1-CPU2 chip, CPU8-16-single-chip microcontroller；

IR2113S-switch driving chip, ULN2803-1-first via driving chip, ULN2803-2-second drive core Piece；

U1-serial ports turns parallel port chip I, and U2-serial ports turns parallel port chip II；

AMS117-power supply chip, BRIGE-rectification chip, MAX232-serial communication chip, LCTV-voltage are mutual Sensor；

(3) letter character meaning in figure:

HZX-frequency selection, IFB-fed-back current signals, KST-detection resistance output end,

LO1-SPWM wave I, HO1-SPWM wave II, LO2-SPWM wave III, HO2-SPWM wave IV, VS1, VS2-inversion Circuit voltage waveform；

The fault point X1~X119-, G01-1~G16-1, two tip node of the fault point G01-2~G16-2-, DJ0~ DJ15-fault input signal；

ZXJ-part lower end metal-oxide-semiconductor corresponding end, ZSJ-part upper end metal-oxide-semiconductor corresponding end, ZXG-lower end of track metal-oxide-semiconductor Corresponding end, ZSG-track upper end metal-oxide-semiconductor corresponding end；

Z, two tip node of J-ac-dc conversion circuit capacitor charging current-limiting resistance.

Specific embodiment

A kind of railway phase-sensitive track circuits training platform, the platform use integrated structure design, including host computer 101, Fault setting unit 102, micro power screen 103, combinational circuit 104 and outdoor equipment 105, the outdoor equipment include that track becomes Depressor and rail；

Relay phase-sensitive track circuits are combined, the indicating relay of the section combinational circuit is two relays of binary JDQ combines microelectronic phase-sensitive track circuits, and the indicating relay of the section combinational circuit is track relay GJ；

Power circuit I includes ACDC24 module, ACDC12 module and DC24-05 module；

The power converting circuit I uses power supply chip AMS1117 chip, and the ac-dc conversion circuit is inserted with rectification core Piece BRIGE, delay control circuit use timer NE555, triode Q1 and diode D17, and the base stage of triode Q1 connects timing The output end of device NE555, the collector I of triode Q1 connect 5 feet of diode D17 anode and time-delay relay, time-delay relay 1 foot and 3 feet connect respectively ac-dc conversion circuit capacitor charging current-limiting resistance R43 and resistance R44 both ends (referring to attached drawing 9/ 10)；

The CPU2 circuit of the system feeding plate includes CPU2 chip, phase difference display charactron PHC, downloading mouth wiring JTG, digital coding knob FOR and external condition export XZK；The CPU1 circuit includes singlechip CPU 8-16, charactron SMG With charactron SMG1:

The phase difference shows the 1 foot ground connection of charactron PHC, and 5 feet connect 5V direct current, and 2,3,4 feet connect CPU2 chip respectively 1,2,3 feet；The 2 feet ground connection of mouth wiring JTG is downloaded, 1 foot connects 5V direct current, and 3,4 feet connect the 13 of CPU2 chip, 14 feet respectively； 5 feet of digital coding knob FOR are grounded, and 4 feet connect 5V direct current, and 3 feet connect 17 feet of CPU2 chip, and 1 foot connects the 15 of CPU2 chip Foot, 2 feet connect 16 feet of CPU2 chip；External condition export XZK 1 foot ground connection, 2,3,4,5 feet connect respectively CPU2 chip 28, 27,26,25 foot；

Singlechip CPU 8-16 is first is that railway voltage signal VGC and local power panel for sending to track power panel are sent The local voltage signal VJC come carries out analog-to-digital conversion and detection；Second is that for judging whether detected voltage value meets the requirements, such as Fruit is unsatisfactory for, then the information relatively low or higher to CPU2 circuit output by 15 foot of I/O port and 13 feet；Such as track power supply mark Standard is 220V ± 3%, if judging that actual track power supply passes through four lower than standard 220V, CPU8-16 after CPU8-16 operation 31,32,13,15 foot of I/O mouth is communicated with four I/O mouths 4,5,6,7 of CPU2, and such as output 0000 indicates low, at this time CPU2 circuit It may know that not within the scope of reference power supply, SPWM wave is reduced by internal processes for track supply voltage when receiving 0000 Duty ratio, to improve the output amplitude of track power supply；

Working principle

When 3 feet of digital coding knob FOR are low level, the voltage of track power supply and locally supplied power source is automatic adjustment mould Formula, after system electrification, by CPU2 inter-process, make track power supply voltage can automatic steady to 220V, the voltage of locally supplied power source Automatic voltage regulation is to 110V；

When 3 feet of digital coding knob FOR are high level, output supply voltage is manual adjustment mode, needs to adjust When the voltage of track power supply, need to make 2 feet of external condition output XZK to be lower, at this time by rotary digital coding knob FOR into Row manually adjusts, and is accounted for by 24 feet and 23 feet of CPU2 to the output of the lower end of track metal-oxide-semiconductor and track upper end metal-oxide-semiconductor of inverter circuit Empty ratio changes, thus the voltage of adjustable track power supply；

When needing to adjust the voltage of locally supplied power source, needs 3 feet for making external condition output XZK to be lower, pass through rotation at this time Digital coding knob FOR is manually adjusted, the local upper end metal-oxide-semiconductor drawn game by 22 feet and 20 feet of CPU2 to inverter circuit Subordinate end metal-oxide-semiconductor output duty cycle changes, to adjust the voltage of locally supplied power source；

When needing to adjust phase difference, needs 4 feet for making external condition output XZK to be lower, compiled at this time by rotary digital Code knob FOR manually adjust the phase difference of track power supply and locally supplied power source；5 feet that external condition exports XZK are spare.

The inverter circuit includes part upper end metal-oxide-semiconductor Q7, part lower end metal-oxide-semiconductor Q8, track upper end metal-oxide-semiconductor Q5, track Lower end metal-oxide-semiconductor Q6, inductance coil L3, inductance coil L4, resistance R56, resistance R57, resistance R58, resistance R59, resistance R60, electricity Hinder R61, resistance R62, resistance R63, diode D18, diode D19, diode D20 and diode D21；

Resistance R56, resistance R57, resistance R60 and resistance R61 are current-limiting resistance, diode D18, diode D19, diode D20 and diode D21 is freewheeling diode, and resistance R58, resistance R59, resistance R62 and resistance R63 are loop resistance, resistance R65 For detection resistance, output end KTS exports fed-back current signals IFB to over-current detection circuit；

I LO1 and SPWM wave of SPWM wave, II HO1 come the driving circuit first via switch driving chip have same frequency Rate, opposite in phase high level be the SPWM wave of 12V, III LO2 and SPWM wave of SPWM wave, IV HO2 carrys out driving circuit second The SPWM wave with identical frequency, opposite in phase of way switch driving chip, II HO1 and SPWM wave of SPWM wave, III LO2 and SPWM I LO1 with SPWM wave of wave, IV HO2 frequency is identical, opposite in phase；

Direct current DC350 comes from ac-dc conversion circuit.

Working principle

II HO1 and SPWM wave of SPWM wave, III LO2 is identical as I LO1 and SPWM wave of SPWM wave, IV HO2 frequency, opposite in phase；

When II HO1 of SPWM wave and III LO2 of SPWM wave is high level, IV HO2 of SPWM wave and I LO1 of SPWM wave are low level, Part upper end metal-oxide-semiconductor Q7 is connected with lower end of track metal-oxide-semiconductor Q6 at this time, and the path that direct current 350V flows through is DC350-Q7-L4- R0-L3-Q6-KTS-GND, the upper end of R65 is 0 at this time, and lower end is positive, conversely, when IV HO2 of SPWM wave and I LO1 of SPWM wave is height When level, II HO1 of SPWM wave and III LO2 of SPWM wave are low level, at this time track upper end metal-oxide-semiconductor Q5 and part lower end metal-oxide-semiconductor Q8 Conducting, the path that direct current 350V flows through are DC350-Q5-L3-R0-L4-Q8-KTS-GND, and the upper end of R65 is positive at this time, under End is 0, constantly circulation is gone down, and the duty ratio of the SPWM wave that R65 both end voltage input by driving plate controls, and VS2 and VS1 are at this time Voltage waveform be positive and negative 350V SPWM wave, after L3-C3-L4 filter circuit, the frequency 25HZ of out-put supply.

The driving circuit is made of the identical switch driving circuit of two-way, and core devices are switch driving chip IR2113S, 12,14 feet of the first way switch driving chip connect 24 feet and 23 feet of CPU2 chip respectively, input two-way high level For the SPWM wave of 5V, I LO1 and SPWM wave of SPWM wave, II HO1 for being respectively 12V from 1 foot and 8 feet output two-way high level is given The local lower end metal-oxide-semiconductor Q8 and part upper end metal-oxide-semiconductor Q7 of inverter circuit, control its on or off, so that output carries The high-voltage pulse of 25Hz alternating current；

12,14 feet of the second way switch driving chip connect 22 feet and 20 feet of CPU2 chip respectively, input two-way high level For the SPWM wave of 5V, III LO2 and SPWM wave of SPWM wave, IV HO2 for being respectively 12V from 1 foot and 8 feet output two-way high level is sent Lower end of track metal-oxide-semiconductor Q6 and track upper end metal-oxide-semiconductor Q5 to inverter circuit, control its on or off, so that output carries The high-voltage pulse of 25Hz alternating current；

The voltage detecting circuit includes voltage transformer LCTV and half-wave rectifying circuit, the input terminal 1 of voltage transformer Foot and 2 feet connect present load i.e. track transformer both end voltage, and 5 foot of output end of voltage transformer and 4 feet connect halfwave rectifier electricity Road, half-wave rectifying circuit detect the CPU1 circuit that rectified direct current sends system feeding plate back to.

The over-current detection circuit includes voltage comparator LM393, controllable reference power supply TL431, CPU3 chip and puts Big circuit, the amplifying circuit are made of operational amplifier LM358, resistance R73, resistance R74 and capacitor C38；

5V direct current connects 1 foot of controllable reference power supply TL431 by resistance R71, and 1 foot of controllable reference power supply TL431 connects 2 feet of voltage comparator LM393 input high precision electro potential source, and 3 feet of operational amplifier LM358 connect inversion electricity by resistance R75 Detection resistance R65 output end KTS in road, with input feedback current signal IFB, 7 foot of output end of operational amplifier LM358 is connect 7 feet of 3 feet of voltage comparator LM393, voltage comparator LM393 connect 7 feet of CPU3 chip；

Controllable reference power supply TL431 is for exporting 2.5V direct current as fiducial value, and amplifying circuit is for amplifying inversion electricity The fed-back current signals of road input, CPU3 chip are used for the calculation process of comparison result；

Working principle

Controllable reference power supply TL431 inputs 2.5V direct current to voltage comparator LM393, and fed-back current signals are electric from inversion It is exported on feedback resistance R65 (endpoint KTS) in road, send voltage comparator after operational amplifier LM358 amplified signal LM393, amplified signal are compared with the controllable reference power supply TL431 2.5V being input into, and comparison result is sent to CPU3 chip The port INT0 (7 foot), by CPU3 chip calculation process, if electric current is excessive, 8 feet of CPU3 chip export high level, The high level gives 13 feet of two switch driving chip IR2113S, at this point, switch driving chip IR2113S stops working, it is inverse Power transformation road is by protect entire inverter circuit.

The fault setting unit mainboard includes power circuit II, cpu chip, failure indicating circuit 1021 and serial communication Circuit；

The faulty board includes the first driving chip, the second driving chip, serial ports turns I U1 of parallel port chip and serial ports turns parallel port II U2 of chip and power transfer relay circuit；First driving chip and the second driving chip use ULN2803 chip, described Serial ports turns parallel port chip I and serial ports turns parallel port chip II and uses 74HC595 chip, two pieces of 74HC595 chip cascades:

15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet that serial ports turns parallel port chip I connect the first drive respectively 8 feet, 7 feet, 6 feet, 5 feet, 4 feet, 3 feet, 2 feet and 1 foot of dynamic chip ULN2803-1, serial ports turn the delivery outlet 15 of parallel port chip II Foot, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet connect 8 feet, 7 feet, 6 feet, 5 feet, 4 of the second driving chip ULN2803-2 respectively Foot, 3 feet, 2 feet and 1 foot；

The cpu chip of mainboard uses STC15W4K chip, and 8 Bits Serial data feeding serial ports is turned parallel port by STC15W4K chip 14 feet of chip I, 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet for turning parallel port chip I from serial ports are defeated side by side 8 data enter the first driving chip out, and 8 Bits Serial data feeding serial ports is turned the 14 of parallel port chip II by STC15W4K chip Foot, 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet for turning parallel port chip U2 from serial ports export 8 data side by side Into the second driving chip, after driving chip, exporting, there is data the signal of load capacity to directly drive power transfer relay The power transfer relay of circuit, the setting of achievable 16 fault points of every piece of faulty board, respectively drives 16 groups of power transfer relay circuits Power transfer relay.

2 groups of relays phase-sensitive track circuits composite structure is identical, and every group includes sending end and receiving end, and sending end includes Fuse RD1, fuse RD2, fuse DLQ1, fuse DLQ2, track transformer BG25 I, track resistance RX, receiving end packet Include relay transformer BG25 II, protection box HF4, lightning protection device Z, section indicating relay i.e. two relay RGJ of binary；

The track transformer input terminal of sending end connects 25HZ, 220V track power supply of micro power screen by fuse, Output end connects rail, relay transformer output end through track resistance RX connection rail, the relaying transformer inputs of receiving end The input terminal 3 and 4 of two relays of binary is connected, 25HZ, 110V locally supplied power source of micro power screen connect two relays of binary The input terminal 1 and 2 of device；

The relay phase-sensitive track circuits combination of first section sets 21 fault point X1-X21, and third section sets 21 failures Point X22-X42.

Working principle:

The track transformer BG25 I is step-down transformer, for the 220V track power supply from micro power screen to be become It for 1V or so, send to rail level, then rail surface voltage is risen to 16V or more by relayed transformer BG25 II, is finally sent to binary two 3,4 terminals of relay RGJ, the 110V locally supplied power source from micro power screen send to 1,2 ends of two relay RGJ of binary, As long as two kinds of supply voltage frequencies consistent (25HZ), 90 degree of the advanced track power supply of locally supplied power source's phase, two relay RGJ of binary It can pick up, indicate the section without vehicle, when 3,4 both end voltages of RGJ are unsatisfactory for condition, two relay RGJ of binary can be fallen Under, indicate that the section has vehicle.

2 groups of microelectronics phase-sensitive track circuits composite structure is identical, and every group includes sending end and receiving end, sending end packet Include fuse RD1, fuse RD2, fuse DLQ1, fuse DLQ2, track transformer BG25 I, track resistance RX, receiving end Including relay transformer BG25 II, protection box HF4, II JXW-25B-2 of lightning protection device Z, I JXW-25B-1 of receiver and receiver, become Depressor box HBJ, warning box HB, capacitor C and section indicating relay, that is, track relay GJ；

The track transformer input terminal of sending end connects 25HZ, 220V track power supply of micro power screen by fuse, Output end is through track resistance RX connection rail；

II input terminal of relay transformer BG25 of receiving end connects rail, and relay transformer output end connects transformer box The input terminal 71 and 81 of HBJ, transformer box export two-way power supply, connect the input terminal 73 of I JXW-25B-1 of receiver all the way With 83, another way connects the input terminal 73 and 83 of II JXW-25B-2 of receiver, the micro power screen from micro power screen 25HZ, 110V locally supplied power source connect input terminal 51,61 ends of receiver I and receiver II, and the 24V from micro power screen is straight The terminal 72 and 82 of galvanic electricity connection receiver I and receiver II；32 parallel connection of terminal of receiver I and receiver II be followed by track after 42 parallel connection of terminal of the terminal 1 of electric appliance GJ electromagnetic coil, receiver I and receiver II is followed by track relay GJ electromagnetic coil end The terminal 31 and 41 of son 4, receiver I and receiver II is separately connected alarm；

Protection box and lightning protection device are connected in parallel between the input terminal 71 and 81 of transformer box HBJ；

The microelectronic phase-sensitive track circuits combination of first section sets 76 fault point X43-X80, and third section sets 75 Fault point X81-X119.

Working principle

Track transformer is step-down transformer, and the 220V track power supply from micro power screen is become 1V or so, send to Rail surface voltage is risen to 16V or more by rail level, then relayed transformer BG25, is finally sent to 71,81 terminals of transformer box HBJ, Two-way power supply is exported by transformation, 73 and 83 give receiver I, and 52,62 give receiver II, the 110V from micro power screen Locally supplied power source JJZ/JJF send the 24V direct current to the 51 of receiver I, 61 ends, the 51 of receiver II, 61 ends, from micro power screen (KZ, KF) is sent to the 72 of receiver I, 82 ends, the 72 of receiver II, 82 ends, as long as two kinds of supply voltages are met the requirements, frequency one (25HZ), 90 degree of the advanced track power supply of locally supplied power source's phase are caused, receiver I can be driven track relay GJ(section 1 and be 1DGGJ, section 3 are 3DGGJ) it picks up, the section is indicated without vehicle, when 73,83 both end voltages of receiver I and receiver II are discontented When sufficient condition, it is 1DGGJ that receiver, which can drive track relay GJ(section 1, and section 3 is 3DGGJ) it falls, indicate that the section has Vehicle.

Fuse RD1, fuse RD2 and the fuse DLQ1 of the relay phase-sensitive track circuits combination sending end, it melts Disconnected device DLQ2 is connected by female plug F1 with male plug F2:

Relay phase-sensitive track circuits combine receiving end two relay RGJ of binary, two input terminal 1 and with input terminal 2 with The input terminal JJZ and input terminal JJF of locally supplied power source are connected by female plug F1 with male plug F2:

That is the input terminal JJZ and input terminal JJF of locally supplied power source are connect respectively on the terminal 01-17 and 01-18 of female plug F1, and two The input terminal 1 and input terminal 2 of two relay RGJ of member connects on the terminal 03-17 and 03-18 of male plug F2；

Microelectronic phase-sensitive track circuits combine II JXW-25B-2's of I JXW-25B-1 of receiver and receiver of receiving end 51 feet and 61 feet and the input terminal JJZ and input terminal JJF of locally supplied power source pass through female plug F1 and male plug F3 connection:

Claims

1. a kind of railway phase-sensitive track circuits training platform, it is characterised in that: the platform uses integrated structure design, including upper Position machine (101), fault setting unit (102), micro power screen (103), combinational circuit (104) and outdoor equipment (105), it is described Outdoor equipment includes track transformer and rail；

It the host computer and fault setting list and is electrically connected, combinational circuit is electrically connected with fault setting unit and outdoor equipment simultaneously It connects, micro power screen is electrically connected with combinational circuit；

The combinational circuit is used to simulate the control to outdoor track section, including the combination of relay phase-sensitive track circuits and micro- electricity The combination of minor phase-sensitive track circuits, the relay phase-sensitive track circuits combination and the combination of microelectronic phase-sensitive track circuits are 2 groups, it is separately connected the outdoor equipment of 2 track sections, when there is vehicle to occupy a wherein section, the instruction of the section combinational circuit Relay is fallen, and when train goes out the clear section, the indicating relay of the section combinational circuit is picked up；

The fault setting unit is used to complete the setting or reparation of combinative network's faults point, fault setting unit include mainboard and N block faulty board, the quantity N of faulty board and the setting quantity of fault point are corresponding；

Faulty board is the execution part of fault setting or reparation, and mainboard is according to the failure relay in host computer order driving malfunction plate Device is picked up or is fallen, and realizes the setting or reparation of fault point；

Power circuit I includes ACDC24 module, ACDC12 module and DC24-05 module；

ACDC24 module is used to the city 220V be 24V direct current for convert alternating current, for the indicating relay, micro- in combinational circuit Electronic receiver and warning box provide working power；

ACDC12 module is used to the city 220V be 12V DC electricity for convert alternating current, is alternating current-direct current plate, track power panel and part Power panel provides working power；

DC24-05 module is used to 12V DC electricity is transformed to the CPU1 circuit and CPU2 circuit that 5V direct current is system power supply plate Working power is provided；

CPU1 circuit is first is that the part electricity that railway voltage signal VGC and local power panel for sending to track power panel are sent Signal VJC is pressed to carry out analog-to-digital conversion and detection；Second is that for judging whether detected voltage value meets the requirements, if conditions are not met, The then information relatively low or higher to CPU2 circuit output by I/O port；Third is that for showing track power supply and locally supplied power source Voltage；

CPU2 circuit for completing the SPWM wave that four road high level are 5V first is that be conveyed in track power panel and local power panel Driving circuit, driving circuit export high level be 12V SPWM wave, be conveyed to inverter circuit；

Second is that adjusting voltage: voltage according to the relatively low or higher information of the track power supply of CPU1 circuit conveying and local supply voltage It is worth relatively low, reduces the duty ratio of SPWM wave to improve the output amplitude of track power supply, voltage value is higher, increases SPWM wave Duty ratio is to reduce the output amplitude of track power supply；

The alternating current-direct current plate includes ac-dc conversion circuit, power converting circuit I, delay control circuit and time-delay relay；

Power converting circuit I is used to the 12V DC electricity from system power supply plate being transformed to 5V direct current, is delay control circuit Working power is provided；

Delay control circuit is picked up for controlling time-delay relay delay, so that the capacitor charging in ac-dc conversion circuit be made to limit Leakage resistance short circuit, to guarantee ac-dc conversion circuit output voltage power stability；

The track power panel is identical as the hardened structure of locally supplied power source including power converting circuit II, inverter circuit, driving circuit, Voltage detecting circuit and over-current detection circuit；

Power converting circuit II is used to the 12V DC electricity from system power supply plate switching to 5V direct current, is inverter circuit, driving Circuit, voltage detecting circuit and over-current detection and short-circuit protection circuit provide working power；

Inverter circuit is used to for the 350V direct current that ac-dc conversion circuit is sent to be changed into the 220V or 110V that frequency is 25HZ Alternating current, 220V alternating current are used for track power supply, and 110V alternating current is used as locally supplied power source；

Driving circuit is used to control the high-voltage pulse that inverter circuit output carries 25Hz alternating current, by generating frequency after filtering 25HZ AC power source；

Over-current detection circuit is used to detect the size of the electric current of inverter circuit output, and high level is exported if excessive makes driving electricity Road stops working, and inverter circuit cut-off is cut off the power, and realizes the protection to inverter circuit；

The track power panel is different from locally supplied power source's plate output voltage, and track power panel exports the conduct of 25HZ/220V alternating current Track power supply, locally supplied power source's plate export 25HZ/110V alternating current as locally supplied power source.

2. a kind of railway phase-sensitive track circuits training platform according to claim 1, it is characterised in that: the system supply The CPU2 circuit of plate includes CPU2 chip, phase difference display charactron (PHC), downloading mouth wiring (JTG), digital coding knob (FOR) and external condition exports (XZK)；The CPU1 circuit includes singlechip CPU 8-16, charactron SMG and charactron SMG1:

The phase difference shows the 1 foot ground connection of charactron (PHC), and 5 feet connect 5V direct current, and 2,3,4 feet connect CPU2 chip respectively 1,2,3 foot；The 2 feet ground connection of mouth wiring (JTG) is downloaded, 1 foot connects 5V direct current, and 3,4 feet connect the 13 of CPU2 chip, 14 feet respectively； 5 feet of digital coding knob (FOR) are grounded, and 4 feet connect 5V direct current, and 3 feet connect 17 feet of CPU2 chip, and 1 foot connects CPU2 chip 15 feet, 2 feet connect 16 feet of CPU2 chip；External condition exports the 1 foot ground connection of (XZK), and 2,3,4,5 feet connect CPU2 chip respectively 28,27,26,25 foot；

24 feet, 23 feet, 22 feet and 20 feet of CPU2 chip connect the input terminal of driving circuit respectively, are 5V to its input high level SPWM wave, 4,5,6,7 feet of CPU2 chip connect respectively the singlechip CPU 8-16 of CPU1 circuit four I/O communication interfaces i.e. 3, 2,13 and 15 feet are to realize data communication；

10 feet and 12 feet of singlechip CPU 8-16 integrate with respectively power panel and local power panel voltage detecting circuit output End, 15 foot of I/O communication interface and 13 feet connect 6 feet and 7 feet of the CPU2 chip of CPU2 circuit respectively；

Singlechip CPU 8-16 is first is that railway voltage signal VGC and local power panel for sending to track power panel were sent Local voltage signal VJC carries out analog-to-digital conversion and detection；Second is that for judging whether detected voltage value meets the requirements, if not Meet, then the information relatively low or higher to CPU2 circuit output by 15 foot of I/O port and 13 feet；

3. a kind of railway phase-sensitive track circuits training platform according to claim 2, it is characterised in that: the inverter circuit Including local upper end metal-oxide-semiconductor (Q7), local lower end metal-oxide-semiconductor (Q8), track upper end metal-oxide-semiconductor (Q5), lower end of track metal-oxide-semiconductor (Q6), Inductance coil L3, inductance coil L4, resistance R56, resistance R57, resistance R58, resistance R59, resistance R60, resistance R61, resistance R62, resistance R63, diode D18, diode D19, diode D20 and diode D21；

Resistance R56, resistance R57, resistance R60 and resistance R61 are current-limiting resistance, diode D18, diode D19, diode D20 It is freewheeling diode with diode D21, resistance R58, resistance R59, resistance R62 and resistance R63 are loop resistance, and resistance R65 is Detection resistance, output end (KTS) export fed-back current signals (IFB) to over-current detection circuit；

SPWM wave I (LO1) and SPWM wave II (HO1) come the driving circuit first via switch driving chip have same frequency Rate, opposite in phase high level be the SPWM wave of 12V, SPWM wave III (LO2) and SPWM wave IV (HO2) carry out driving circuit the The SPWM wave with identical frequency, opposite in phase of two-way switch driving chip, SPWM wave II (HO1) and SPWM wave III (LO2) , opposite in phase identical as SPWM wave I (LO1) and (HO2) frequency of SPWM wave IV；

Direct current DC350 comes from ac-dc conversion circuit.

4. a kind of railway phase-sensitive track circuits training platform according to claim 3, it is characterised in that: the driving circuit It is made of the identical switch driving circuit of two-way, core devices are switch driving chip (IR2113S), the first way switch 12,14 feet of driving chip connect 24 feet and 23 feet of CPU2 chip respectively, the SPWM wave that input two-way high level is 5V, respectively from The SPWM wave I (LO1) and SPWM wave II (HO1) that 1 foot and 8 feet output two-way high level are 12V, give under the part of inverter circuit Metal-oxide-semiconductor (Q8) and local upper end metal-oxide-semiconductor (Q7) are held, turns it on or ends, so that output carries the high pressure of 25Hz alternating current Pulse；

12,14 feet of the second way switch driving chip connect 22 feet and 20 feet of CPU2 chip respectively, and input two-way high level is 5V SPWM wave, respectively from 1 foot and 8 feet output two-way high level be 12V SPWM wave III (LO2) and SPWM wave IV (HO2), give The lower end of track metal-oxide-semiconductor (Q6) and track upper end metal-oxide-semiconductor (Q5) of inverter circuit, turn it on or end, so that output carries The high-voltage pulse of 25Hz alternating current；

5. a kind of railway phase-sensitive track circuits training platform according to claim 4, it is characterised in that: the voltage detecting Circuit includes voltage transformer (LCTV) and half-wave rectifying circuit, and 1 foot of input terminal of voltage transformer and 2 feet connect present load i.e. Track transformer both end voltage, 5 foot of output end of voltage transformer and 4 feet connect half-wave rectifying circuit, and half-wave rectifying circuit will be through The direct current of rectification sends the CPU1 circuit detection of system feeding plate back to.

6. a kind of railway phase-sensitive track circuits training platform according to claim 5, it is characterised in that: the over-current detection Circuit includes voltage comparator (LM393), controllable reference power supply (TL431), CPU3 chip and amplifying circuit, the amplification electricity Operational amplifier (LM358), resistance R73, resistance R74 and capacitor C38 is routed to constitute；

5V direct current connects 1 foot of controllable reference power supply (TL431) by resistance R71, and 1 foot of controllable reference power supply (TL431) connects 2 feet of voltage comparator (LM393) input high precision electro potential source, and 3 feet of operational amplifier (LM358) are connect inverse by resistance R75 Detection resistance R65 output end (KTS) in power transformation road, with input feedback current signal (IFB), operational amplifier (LM358) 7 foot of output end connects 3 feet of voltage comparator (LM393), and 7 feet of voltage comparator (LM393) connect 7 feet of CPU3 chip；

Controllable reference power supply (TL431) is for exporting 2.5V direct current as fiducial value, and amplifying circuit is for amplifying inverter circuit The fed-back current signals of input, CPU3 chip are used for the calculation process of comparison result；

8 feet of CPU3 chip connect the first switch driving chip of driving circuit and 13 feet of second switch driving chip, for electricity When flowing through big export high level make its by.

7. a kind of railway phase-sensitive track circuits training platform according to claim 6, it is characterised in that: the fault setting Unit mainboard includes power circuit II, cpu chip, failure indicating circuit (1021) and serial communication circuit；

The power circuit II is used to alternating current be converted to 5V direct current, is cpu chip, failure indicating circuit and serial communication electricity Road provides working power；

The cpu chip is mainly used for completing communication and driving, by the data received from serial communication, according to processing result Output drive signal drives the power transfer relay of corresponding faulty board to pick up or fall；

The failure indicating circuit is connected to 34,33,32 and 31 feet of cpu chip, existing event when for showing communication Barrier, to analyze；

The faulty board includes the first driving chip, the second driving chip, serial ports turns parallel port chip I (U1) and serial ports turns parallel port core Piece II (U2) and power transfer relay circuit；First driving chip and the second driving chip use ULN2803 chip, described Serial ports turns parallel port chip I and serial ports turns parallel port chip II and uses 74HC595 chip, two pieces of 74HC595 chip cascades:

Serial ports, which turns parallel port chip I, connects 5 foot of output I/O mouth of cpu chip, centre concatenation with 11 feet that serial ports turns parallel port chip II Resistance R21 current limliting；

Serial ports, which turns parallel port chip I, connects 6 foot of output I/O mouth of cpu chip, centre concatenation with 12 feet that serial ports turns parallel port chip II Resistance R22 current limliting；

Serial ports, which turns parallel port chip I, connects 7 foot of output I/O mouth of cpu chip, centre concatenation with 14 feet that serial ports turns parallel port chip II Resistance R23 current limliting；

15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet that serial ports turns parallel port chip I connect the first driving core respectively 8 feet, 7 feet, 6 feet, 5 feet, 4 feet, 3 feet, 2 feet and 1 foot of piece (ULN2803-1), serial ports turn parallel port chip II 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet connect 8 feet, 7 feet, 6 feet, 5 feet, 4 of the second driving chip (ULN2803-2) respectively Foot, 3 feet, 2 feet and 1 foot；

The power transfer relay circuit includes power transfer relay JDQ and the back-pressure preventing that is attempted by between 1 foot of power transfer relay and 2 feet Diode, 2 foot input terminal of power transfer relay concatenate light emitting diode and current-limiting resistance, 3,4 foot connecting faults of power transfer relay The cut-off point both ends of point；

The back-pressure preventing diode of 16 groups of power transfer relay circuits includes diode D1~diode D16, is fallen for absorbing relay The electromotive force that coil will generate when lower, current-limiting resistance includes resistance R1~resistance R16, and light emitting diode includes diode D101~bis- Pole pipe D116, light emitting diode is relay status indicator light, bright when power transfer relay picks up；

The cpu chip of mainboard uses STC15W4K chip, and 8 Bits Serial data feeding serial ports is turned parallel port chip by STC15W4K chip I 14 feet, 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet for turning parallel port chip I from serial ports export 8 side by side Data enter the first driving chip, and 8 Bits Serial data feeding serial ports is turned 14 feet of parallel port chip II by STC15W4K chip, from string 15 foot of delivery outlet, 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 7 feet that mouth turns parallel port chip II export 8 data side by side and enter the Two driving chips, after driving chip, exporting, there is data the signal of load capacity to directly drive power transfer relay circuit Power transfer relay, the setting of achievable 16 fault points of every piece of faulty board, respectively drives the failure of 16 groups of power transfer relay circuits Relay.

8. a kind of railway phase-sensitive track circuits training platform according to claim 7, it is characterised in that: 2 groups of relays Formula phase-sensitive track circuits composite structure is identical, and every group includes sending end and receiving end, and sending end includes fuse RD1, fuse RD2, fuse DLQ1, fuse DLQ2, track transformer BG25 I, track resistance RX, receiving end include relay transformer BG25 II, protection box (HF4), lightning protection device (ZA) and section indicating relay, that is, relay RGJ of binary two；

The track transformer input terminal of sending end connects 25HZ, 220V track power supply of micro power screen, output by fuse Through track resistance RX connection rail, the relaying transformer inputs of receiving end connect rail, the connection of relay transformer output end at end The input terminal 3 and 4 of two relays of binary, 25HZ, 110V locally supplied power source of micro power screen connect two relays of binary Input terminal 1 and 2；

The protection box and lightning protection device are connected in parallel between two relay input terminals 3 and 4 of binary, two relays of binary it is defeated Enter shunt capacitance C between terminal 1 and 2；

The relay phase-sensitive track circuits combination of first section sets 21 fault points (X1-X21), and third section sets 21 fault points (X22-X42)；

2 groups of microelectronics phase-sensitive track circuits composite structure is identical, and every group includes sending end and receiving end, and sending end includes molten Disconnected device RD1, fuse RD2, fuse DLQ1, fuse DLQ2, track transformer BG25 I, track resistance RX, receiving end include Relay transformer BG25 II, protection box (HF4), II (JXW-25B- of lightning protection device (ZA), receiver I (JXW-25B-1) and receiver 2), transformer box (HBJ), warning box (HB), capacitor C and section indicating relay, that is, track relay GJ；

The track transformer input terminal of sending end connects 25HZ, 220V track power supply of micro power screen, output by fuse End is through track resistance RX connection rail；

II input terminal of relay transformer BG25 of receiving end connects rail, and relay transformer output end connects transformer box (HBJ) Input terminal 71 and 81, transformer box export two-way power supply, all the way connect receiver I (JXW-25B-1) input terminal 73 With 83, another way connects the input terminal 73 and 83 of receiver II (JXW-25B-2), the micro power screen from micro power screen 25HZ, 110V locally supplied power source connection receiver I and receiver II input terminal 51,61 ends, the 24V from micro power screen The terminal 72 and 82 of direct current electrical connection receiver I and receiver II；32 parallel connection of terminal of receiver I and receiver II is followed by track 42 parallel connection of terminal of the terminal 1 of relay GJ electromagnetic coil, receiver I and receiver II is followed by track relay GJ electromagnetic coil The terminal 31 and 41 of terminal 4, receiver I and receiver II is separately connected alarm；

Protection box and lightning protection device are connected in parallel between the input terminal 71 and 81 of transformer box (HBJ)；

The microelectronic phase-sensitive track circuits combination of first section sets 76 fault points (X43-X80), and third section sets 75 events Hinder point (X81-X119).

9. a kind of railway phase-sensitive track circuits training platform according to claim 8, it is characterised in that: the relay phase Pass through mother between the fuse RD1 and fuse RD2 and fuse DLQ1 and fuse DLQ2 of quick track circuit combination sending end F1 is inserted to connect with male plug F2:

That is fuse RD1 and fuse RD2 one termination 220V track power supply, another terminal F-2-1 for terminating at male plug F2 and On the terminal F-2-2 of male plug F2；One end of fuse DLQ1 and fuse DLQ2 connect the input terminal of track transformer, the other end It connects on the terminal F-1-1 and terminal F-1-2 of female plug F1；

Relay phase-sensitive track circuits combine two output ends of the relay transformer BG25 II of receiving end and lightning protection device Z two-end-point leads to Female plug F1 is crossed to connect with male plug F2:

I.e. two outputs of relay transformer BG25 II terminate on the terminal F-1-3 and F-1-4 of female plug F1, and lightning protection device Z two is terminated On the terminal F-2-3 and F-2-4 of male plug F2；

Two two input terminals 1 of relay (RGJ) of binary and input terminal 2 of relay phase-sensitive track circuits combination receiving end and part The input terminal JJZ and input terminal JJF of power supply are connected by female plug F1 with male plug F2:

That is the input terminal JJZ and input terminal JJF of locally supplied power source are connect respectively on the terminal 01-17 and 01-18 of female plug F1, binary two The input terminal 1 and input terminal 2 of position relay RGJ connects on the terminal 03-17 and 03-18 of male plug F2；

Fuse RD1, fuse RD2 and the fuse DLQ1 of the microelectronic phase-sensitive track circuits combination sending end, fusing Device DLQ2 is connected by female plug F1 with male plug F3:

That is one end of fuse RD1 and fuse RD2 integrates with power input GJZ and input terminal GJF respectively, another to terminate at On the terminal F-3-1 and terminal F-3-2 of male plug F3；

Two output ends and lightning protection device Z two-end-point of the relay transformer BG25 II of the microelectronic phase-sensitive track circuits receiving end It is connected by female plug F1 with male plug F3:

I.e. two output ends of relay transformer BG25 II are connect respectively on the terminal F-1-5 and F-1-6 of female plug F1, lightning protection device Z two Endpoint is connect respectively on the terminal F-3-5 and F-3-6 of male plug F3；

Microelectronic phase-sensitive track circuits combine the receiver I (JXW-25B-1) and receiver II (JXW-25B-2) of receiving end 51 feet and 61 feet and the input terminal JJZ and input terminal JJF of locally supplied power source pass through female plug F1 and male plug F3 connection:

That is the input terminal JJZ and input terminal JJF of locally supplied power source are connect respectively on the terminal 03-6-1 and 03-8-1 of female plug F1, are received 51 feet and 61 feet of device I and receiver II are connect respectively on the terminal 03-6-3 and 03-8-3 of male plug F3；

72 feet and 82 feet of the receiver I and receiver II and the positive input terminal KZ and negative input end KF of 24V DC power supply are logical Female plug F1 is crossed to connect with male plug F3:

That is the positive input terminal KZ and negative input end KF of 24V DC power supply meet the terminal 03-1-1 and 03-3-1 in female plug F1 respectively On, 72 feet and 82 feet of receiver I and receiver II are connect respectively on the terminal 03-1-3 and 03-3-3 of male plug F3；

When being combined using relay phase-sensitive track circuits, male plug F2 is injected on female plug F1；Use microelectronic phase-sensitive track electricity When road is combined, male plug F3 is injected on female plug F1；The F2 being inserted on female plug F1 is exchanged with F3, relay and micro- electricity can be realized The switching of sub two kinds of phase-sensitive track circuits.