CN201040496Y - Detecting device for electric locomotive automatic passing neutral section system - Google Patents
Detecting device for electric locomotive automatic passing neutral section system Download PDFInfo
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- CN201040496Y CN201040496Y CNU2007201035253U CN200720103525U CN201040496Y CN 201040496 Y CN201040496 Y CN 201040496Y CN U2007201035253 U CNU2007201035253 U CN U2007201035253U CN 200720103525 U CN200720103525 U CN 200720103525U CN 201040496 Y CN201040496 Y CN 201040496Y
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Abstract
The utility model discloses a detecting device for an automatic phase over-separation system of an electric locomotive. An instrument unit is connected to an AC-DC power supply converting module, and a testing control circuit, a signal recording time-delay control acousto-optic cue circuit, a DC regulated threshold testing circuit and a simulated locomotive control circuit are separately connected to the AC-DC power supply converting module and to a circumscribed locomotive sensor testing interface circuit, and one end of a type choosing circuit is connected to the simulated locomotive control circuit, and the other end is connected to the circumscribed locomotive sensor testing interface circuit, and the connections are all connected via plug-pull connectors. Adopting the technical scheme of the utility model can simulate practical operating status of the electric locomotive, and the utility model is a test equipment which test whether various electric performances of the automatic phase over-separation system of the electric locomotive are normal or not, which solves the problems of less functions and low working efficiency, therefore ensuring the convenience and accuracy of debugging, testing and maintenance of the automatic phase over-separation system.
Description
Technical field
The utility model relates to the electric locomotive technical field, relates in particular to the detecting device of the automatically undue phase system of electric locomotive.
Background technology
High-speed overload is the developing direction of Chinese Railway.Along with the raising of train running speed, the continuous prolongation of electrified railway operation mileage and the increase of train load, requirement to rolling stock safe operation standard is also more and more higher, thus electric locomotive safety, accurately, reliably by also more and more causing everybody concern between phase-separating section.
In the electrified railway, what electric locomotive adopted is the single phase power supply mode.The tracted load of electric locomotive is a moving load, and in order to reduce the overbalance influence of single-phase tracted load to three-phase electrical power system, traction substation adopts the power supply mode of commutation in turn to power to contact system.Therefore the phase-splitting section apparatus must be set on contact system, when electric locomotive during by the phase-splitting section, the locomotive bus attendant according to ground " break ", the prompting requirement of " closing " standard, adopt the manual switchover mode to pass through phase-separating section, this operating mode has not only influenced locomotive speed, and bus attendant has carelessness to produce to draw electric arc slightly, burns phenomenons such as neutral section insulator, causes that thus substation's tripping operation, interruption of power supply cause train operation accident.
Automatically undue phase system be guarantee electric locomotive safety, accurately, reliably by the technology between phase-separating section.The radical function of automatically undue phase system is when electric locomotive passes through phase-separating section, and system is according to locomotive speed, position automatic smoothing reduce traction current, disconnect auxiliary unit and disjunction line circuit breaker at that time; Behind phase-separating section, auto-closing line circuit breaker, closed auxiliary unit and control traction current smoothly rise, thereby automation of operation when realizing electric locomotive by phase-separating section replaces the driver to go to control the corresponding actions of locomotive before and after phase-separating section, has alleviated the working strength of bus attendant widely.
The vehicle-mounted automatically undue phase system of Guangzhou railway (group) company development is in the electric locomotive control cabin and necessary device and equipment are installed in electric phase-splitting zone, to realize the electric locomotive electric neutral section of conversion automatically.Vehicle-mounted automatically undue phase system mainly by on the car, ground two parts form.Car top claims automatically undue phase control setup, the automatic phase-separating section of crossing of major control electric locomotive, be installed in the electric locomotive, radical function comprises the self check of system and device, the detection of phase-separating section ground signal, the control of line circuit breaker, the control of speed-regulating instruction, the control of Arno converter, the control of compressor and the parts such as control of subsidiary engine.Ground segment is called wayside inductor, is installed in the relevant position in electric phase-splitting zone, can provide location information accurately by crossing phase-splitting for electric locomotive carries out the phase-splitting outage.Vehicle-mounted automatically undue phase system has adopted highly reliable PLC as control unit, non-maintaining ground locate mode, realizes that the accuracy control electric locomotive passes through phase-separating section.
Automatically the employing of undue phase system guaranteed electric locomotive safety, accurately, reliably by between phase-separating section, make maintenance department such as each railway locomotive depot be faced with very big difficulty simultaneously.The check implement that maintenance department there is no need can not be safeguarded by the design-calculated technical requirements and cross phase splitting device automatically, does not more guarantee the serviceability rate of equipment outbound.
What adopt in the automatic debug process of phase-splitting device fabrication excessively is simple commissioning device, function is few, and can not satisfy some technical requirementss of automatically undue phase system on the circuit layout, can not test four passages simultaneously as threshold sensitivity test, the dropout test can't judge concrete which break down or the like.Because do not have the detection commissioning device of specialty to make commissioning staff's inefficiency, the quality of product is difficult to reach the unified standard of technical requirements.
The utility model content
In view of this, the purpose of this utility model is to propose the detecting device of the automatically undue phase system of a kind of electric locomotive, can be used for simulating the whether normal check implement of every electric property of electric locomotive real-world operation state, the automatically undue phase system of test electric locomotive, the convenience that has guaranteed automatic undue phase system debugging, detects and safeguarded, accurate.
For achieving the above object, the utility model is by the following technical solutions:
The detecting device of the automatically undue phase system of a kind of electric locomotive, comprise instrument pack, the AC-DC power transfer module, test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit, model is selected circuit and external car sensor test interface circuit, described instrument pack is connected with described AC-DC power transfer module, described test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit is connected with described AC-DC power transfer module respectively, described test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit is connected with described external car sensor test interface circuit respectively, described model selects an end of circuit to connect described simulation locomotive control circuit, the other end connects described external car sensor test interface circuit, and above-mentioned connection all is to connect by umbilical connector.
Described DC voltage-stabilizing threshold test circuit has four, and each DC voltage-stabilizing threshold test circuit comprises one tunnel output adjustable power of direct current and output voltage meter.
Described picking up signal time-delay control acousto-optic cue circuit comprises time-base integrated circuit that the high speed photo coupling unit of the circuit isolation of carrying out high potential output signal and low voltage pickoff signals, the time of carrying out are controlled and the NOT logic oscillating circuit that carries out the acousto-optic flash for prompting, is used for carrying out acousto-optic hint at advance notice, recovery, duress signal.
Described instrument pack comprises oscp unit, function generator unit and digital versatile table unit.
Comprise that also lamp shows unit, connecting terminal block, car sensor socket, DC power supplier, insurance and battery socket, described lamp shows unit one end and is connected with described simulation locomotive control circuit, and the other end is connected with described external car sensor test interface circuit.
Also comprise guidance panel, described oscp unit, described function generator unit and described digital versatile table unit are embedded in the guidance panel outside.
Described lamp shows the unit and also is embedded in the guidance panel outside.
In the technical solution of the utility model, adopt standard desktop structure external form, topology layout is reasonable, Installation and Debugging are very convenient, and fault rate is low, and measuring accuracy is reliable, can simulate the process of electric locomotive real-world operation, the convenience that has guaranteed automatic undue phase system debugging, detects and safeguarded, accurate.
Description of drawings
Fig. 1 is the front schematic view of the detecting device of automatically undue phase system in this specific embodiment;
Fig. 2 is the cross section structure scheme drawing of the detecting device of automatically undue phase system in this specific embodiment;
Fig. 3 is the guidance panel schematic layout pattern of the detecting device of automatically undue phase system in this specific embodiment;
Fig. 4 is the principle of work scheme drawing of the detecting device of automatically undue phase system in this specific embodiment;
Fig. 5 is the first local schematic diagram of DC voltage-stabilizing threshold test circuit;
Fig. 6 is the second local schematic diagram of DC voltage-stabilizing threshold test circuit;
Fig. 7 is the 3rd a local schematic diagram of DC voltage-stabilizing threshold test circuit;
Fig. 8 is the schematic diagram of picking up signal time-delay control acousto-optic cue circuit.
The specific embodiment
Come the utility model is further specified below in conjunction with accompanying drawing and by the specific embodiment.
Fig. 1 is the front schematic view of the detecting device of automatically undue phase system in this specific embodiment.As shown in Figure 1, the detecting device of automatically undue phase system comprises guidance panel 1 and car sensor socket 4.Fig. 2 is the cross section structure scheme drawing of the detecting device of automatically undue phase system in this specific embodiment.As shown in Figure 2, the detecting device of automatically undue phase system also comprises instrument pack 2, connecting terminal block 3, circuit printing plate 5, AC-DC power transfer module 6, insurance 7 and battery socket 8.Contact components and parts reliable, that quality adheres to specification for guaranteeing that all components and parts of complete machine quality are all selected for use, detecting device inside interconnects all adopts umbilical connector to connect, and is convenient to the maintenance of user to detecting device.
Fig. 3 is the guidance panel schematic layout pattern of the detecting device of automatically undue phase system in this specific embodiment.As shown in Figure 3, guidance panel 1 outside is inlaid with external part 104, the instrument pack 2 (comprising oscp unit 101, function generator unit 102 and digital versatile table unit 103) that lamp shows the unit.All interface circuits relevant with electric locomotive of detecting device and function display circuit all adopt the DC110V direct control, testing result is consistent with actual automatically undue phase system service condition in electric locomotive, by detecting device dynamically, various inner inputs, output signals such as Static Detection can detect the forcing of automatically undue phase system from detecting device instrument operation board, predicts, recovery, judge the quality of automatically undue phase system exactly.Detecting device has designed the panel of directly perceived, clear and convenient and reliable operation, be provided with various switches and indication that source switch and indication, test switch and indication, unit/weight joint control system switch and demonstration, travel direction switch and demonstration, dropout switch, work and advance notice/recovery indication, various signal acousto-optic hint, voltage demonstration and adjustment etc. realize measuring ability on the panel, the assurance detecting device is finished every detection task easily and accurately.
Fig. 4 is the principle of work scheme drawing of the detecting device of automatically undue phase system in this specific embodiment.As shown in Figure 4, the automatic too detecting device of phase system comprises that instrument pack 2, lamp show unit 505, AC-DC power transfer module 6, test control circuit 502, picking up signal time-delay control acousto-optic cue circuit 503, DC voltage-stabilizing threshold test circuit 504, simulate locomotive control circuit 501, model selection circuit 506 and external car sensor test interface circuit 9.Described instrument pack is connected with described AC-DC power transfer module, described test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit is connected with described AC-DC power transfer module respectively, described test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit is connected with described external car sensor test interface circuit respectively, described model selects an end of circuit to connect described simulation locomotive control circuit, the other end connects described external car sensor test interface circuit, and above-mentioned connection all is to connect by umbilical connector.Lamp shows unit one end and is connected with described simulation locomotive control circuit, and the other end is connected with described external car sensor test interface circuit.
Fig. 5 is the first local schematic diagram of DC voltage-stabilizing threshold test circuit; Fig. 6 is the second local schematic diagram of DC voltage-stabilizing threshold test circuit; Fig. 7 is the 3rd a local schematic diagram of DC voltage-stabilizing threshold test circuit.As Fig. 5, Fig. 6 and shown in Figure 7, DC voltage-stabilizing threshold test circuit is formed error less than ± 1% adjustable DC regulated power supply by identical high precision low noise DC voltage-stabilizing integrated circuit, multiturn potentiometer that the high precision error is little, filter capacitor etc., is used for testing the threshold sensitivity index of the automatically undue phase system of electric locomotive simultaneously.Detecting device has designed four tunnel DC voltage-stabilizing threshold voltage test circuits, and every drive test examination circuit comprises sensor-triggered input port 5041, external car sensor input port 5042 and automatic undue sensor input port 5043 mutually.Press corresponding test switch, regulate threshold potentionmeter W1 make voltage by low voltage to high potential adjustment (1 volt～5 volts), can adjust threshold voltage repeatedly, make system under test (SUT) can normally receive signal, the gauge outfit display voltage is threshold voltage at this moment.
Fig. 8 is the schematic diagram of picking up signal time-delay control acousto-optic cue circuit.Picking up signal such as detecting device has advance notice, recover, force time-delay sound-light prompting function, the maintainer sees test process at an easy rate.The signal of the automatically undue phase system of electric locomotive all adopts impulse singla output.The circuit that picking up signal time-delay control acousto-optic cue circuit adopts high speed photo coupling to carry out high potential output signal and low voltage pickoff signals is isolated, circuit has the characteristics such as automatically undue phase system output signal is accurate, antijamming capability is strong, fault rate is low of catching, utilize time-base integrated circuit to carry out time control, the acousto-optic that the NAND logic oscillating circuit is formed flicker makes that the prompting effect is more eye-catching, circuit is provided with reset key simultaneously, can take the control that resets neatly according to the test actual conditions.
Also comprise in addition:
Model is selected circuit, and detecting device can adapt to the automatic phase-splitting testing of equipment function of crossing of different model.It is more to cross the phase-splitting unit type owing to electric locomotive is automatic, thereby design has model to select conversion keys on the control panel of detecting device, can switch the automatic test of crossing phase splitting device of different model flexibly.The test function change-over circuit adopts relay circuit and button switch direct control, has not only saved cost but also reduced unnecessary auxiliary circuit fault.
Simulation locomotive control circuit, detecting device have the dropout of simulation driver control signal, simulation car sensor different definition and the function whether self check of automatic phase-splitting device power is excessively passed through.Simulation car sensor signal is lost circuit and is adopted contact resistance little and control failure-free master cock in contact to carry out circuit control, has both reduced the interference of active circuit, has improved circuit reliability again, the maintenance of user to detecting device of being more convenient for.
Test control circuit, detecting device have the test event selection function.Design has test control selection key (or switch) on the control panel of detecting device, can realize detection and debugging to the different test functions of the automatically undue phase system of electric locomotive.
External car sensor test interface circuit, detecting device have external car sensor test function.The detecting device lower front is equipped with adapt to different model automatic and crosses four car sensor translation interfaces that the phase-splitting Equipment Inspection is used, circuit adopts button to participate in the method for control directly, can carry out the test of paddling magnet according to the automatic external car sensor of actual condition of service of crossing phase splitting device.
Host reset circuit, detecting device have the host test reset function.The host reset circuit adopts by logical one and drives a control circuit that closes, circuit is simple and reliable, homing light is bright in host reset, guaranteed detecting device to electric locomotive automatic cross the phase-splitting testing of equipment in, reduce the switch wearing and tearing that bring because of repositioning method that equipment under test adopted.
When pressing detecting device general supply (K1), power light bright (D12).Automatic neutral-section passing device is connected by connecting terminal block 3 and detecting device with 20 core aviation plug testing wires, open the power supply on the tested automatic neutral-section passing device.Press corresponding test button (or switch), carry out the detection and the debugging of every function respectively.
Adopt on the guidance panel and use the same Electrical key switch, be used for mimic actual manipulatable end control signal circuit with the electric locomotive driver; Guidance panel is provided with the host reset button, reaches the automatic power-on self-test of crossing phase splitting device of tested electric locomotive by control circuit; Guidance panel is provided with the test button, by four relays of circuit control automatic four input threshold sensitivity indexs crossing phase splitting device is tested; Guidance panel is provided with four road Received Loss Of Signal circuit control button, can simulate the dropout of crossing four different definition of phase splitting device automatically; Guidance panel is provided with four road versatile interfaces, is analogue machine vehicle speed impulse rate input port, is again by the delivery port of instrument to car sensor index test.
Detecting device adopts the desk-top integral structure of electric locomotive driver habit, panel layout, operation control switch all remove to seek the reliable and measured switch key of matter of contact by the device of engineer custom, by simulation locomotive driving direction, manipulatable end signal, unit and heavy joint control system signal, locomotive speed frequency pulse signal can make dynamically, result during Static Detection more accurately and reliably.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with the people of this technology in the disclosed technical scope of the utility model; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (7)
1. the detecting device of the automatically undue phase system of an electric locomotive, it is characterized in that, comprise instrument pack, the AC-DC power transfer module, test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit, model is selected circuit and external car sensor test interface circuit, described instrument pack is connected with described AC-DC power transfer module, described test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit is connected with described AC-DC power transfer module respectively, described test control circuit, picking up signal time-delay control acousto-optic cue circuit, DC voltage-stabilizing threshold test circuit, simulation locomotive control circuit is connected with described external car sensor test interface circuit respectively, described model selects an end of circuit to connect described simulation locomotive control circuit, the other end connects described external car sensor test interface circuit, and above-mentioned connection all is to connect by umbilical connector.
2. the detecting device of the automatically undue phase system of a kind of electric locomotive according to claim 1, it is characterized in that, described DC voltage-stabilizing threshold test circuit has four, and each DC voltage-stabilizing threshold test circuit comprises one tunnel output adjustable power of direct current and output voltage meter.
3. the detecting device of the automatically undue phase system of a kind of electric locomotive according to claim 1, it is characterized in that, described picking up signal time-delay control acousto-optic cue circuit comprises time-base integrated circuit that the high speed photo coupling unit of the circuit isolation of carrying out high potential output signal and low voltage pickoff signals, the time of carrying out are controlled and the NOT logic oscillating circuit that carries out the acousto-optic flash for prompting, is used for carrying out acousto-optic hint at advance notice, recovery, duress signal.
4. the detecting device of the automatically undue phase system of a kind of electric locomotive according to claim 1 is characterized in that described instrument pack comprises oscp unit, function generator unit and digital versatile table unit.
5. the detecting device of the automatically undue phase system of a kind of electric locomotive according to claim 1, it is characterized in that, comprise that also lamp shows unit, connecting terminal block, car sensor socket, DC power supplier, insurance and battery socket, described lamp shows unit one end and is connected with described simulation locomotive control circuit, and the other end is connected with described external car sensor test interface circuit.
6. the detecting device of the automatically undue phase system of a kind of electric locomotive according to claim 4 is characterized in that also comprise guidance panel, described oscp unit, described function generator unit and described digital versatile table unit are embedded in the guidance panel outside.
7. the detecting device of the automatically undue phase system of a kind of electric locomotive according to claim 5 is characterized in that, also comprises guidance panel, and described lamp shows the unit and is embedded in the guidance panel outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201035253U CN201040496Y (en) | 2007-02-08 | 2007-02-08 | Detecting device for electric locomotive automatic passing neutral section system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201035253U CN201040496Y (en) | 2007-02-08 | 2007-02-08 | Detecting device for electric locomotive automatic passing neutral section system |
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| CN201040496Y true CN201040496Y (en) | 2008-03-26 |
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| CNU2007201035253U Expired - Fee Related CN201040496Y (en) | 2007-02-08 | 2007-02-08 | Detecting device for electric locomotive automatic passing neutral section system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503438A (en) * | 2014-12-11 | 2015-04-08 | 南车株洲电力机车有限公司 | Method for detecting train passing neutral section system |
| CN105539208A (en) * | 2016-01-25 | 2016-05-04 | 西南交通大学 | Power control method based on cascaded multilevel ground overvoltage phase splitting system |
| CN106364501A (en) * | 2016-10-08 | 2017-02-01 | 中车株洲电力机车有限公司 | Multi-connected vehicles and control system and method for multi-connected vehicles to pass through nonelectric region |
| CN106556757A (en) * | 2016-10-31 | 2017-04-05 | 中车长春轨道客车股份有限公司 | EMUs neutral-section passing system dynamic simulant test system and method for testing |
| CN106569072A (en) * | 2016-11-14 | 2017-04-19 | 株洲中车时代电气股份有限公司 | Track traffic automatic passing over phase-splitter equipment testing system and testing method |
| CN108919781A (en) * | 2018-07-12 | 2018-11-30 | 沈阳铁路信号有限责任公司 | The self checking method and realization circuit of EMU auto-passing neutral section control system |
| CN109130953A (en) * | 2018-08-13 | 2019-01-04 | 中车兰州机车有限公司 | Automatic neutral-section passing system detection device |
| CN109211312A (en) * | 2018-08-17 | 2019-01-15 | 国网江苏省电力有限公司盐城供电分公司 | A kind of power car automatic passing phase insulator device on-line detecting system of the direct current supply mode with return wire |
| CN111301393A (en) * | 2020-03-26 | 2020-06-19 | 东风柳州汽车有限公司 | Automobile man-machine driving mode-shared braking control system and control method |
| CN111823957A (en) * | 2020-07-22 | 2020-10-27 | 中车株洲电力机车有限公司 | Vehicle-ground cooperative passing neutral-phase control method and system and rail transit vehicle |
| CN112014675A (en) * | 2020-09-02 | 2020-12-01 | 中车大同电力机车有限公司 | Detection circuit and detection device of automatic passing neutral section system |
| CN112874389A (en) * | 2021-02-01 | 2021-06-01 | 重庆中车长客轨道车辆有限公司 | Operation protection method, device, equipment and computer readable storage medium |
-
2007
- 2007-02-08 CN CNU2007201035253U patent/CN201040496Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503438B (en) * | 2014-12-11 | 2017-03-29 | 南车株洲电力机车有限公司 | A kind of method of detection train neutral-section passing system |
| CN104503438A (en) * | 2014-12-11 | 2015-04-08 | 南车株洲电力机车有限公司 | Method for detecting train passing neutral section system |
| CN105539208A (en) * | 2016-01-25 | 2016-05-04 | 西南交通大学 | Power control method based on cascaded multilevel ground overvoltage phase splitting system |
| CN106364501A (en) * | 2016-10-08 | 2017-02-01 | 中车株洲电力机车有限公司 | Multi-connected vehicles and control system and method for multi-connected vehicles to pass through nonelectric region |
| CN106556757B (en) * | 2016-10-31 | 2019-01-18 | 中车长春轨道客车股份有限公司 | EMU neutral-section passing system dynamic simulant test system and test method |
| CN106556757A (en) * | 2016-10-31 | 2017-04-05 | 中车长春轨道客车股份有限公司 | EMUs neutral-section passing system dynamic simulant test system and method for testing |
| CN106569072A (en) * | 2016-11-14 | 2017-04-19 | 株洲中车时代电气股份有限公司 | Track traffic automatic passing over phase-splitter equipment testing system and testing method |
| CN108919781B (en) * | 2018-07-12 | 2020-10-27 | 沈阳铁路信号有限责任公司 | Self-checking method and implementation circuit of automatic neutral section passing control system of motor train unit |
| CN108919781A (en) * | 2018-07-12 | 2018-11-30 | 沈阳铁路信号有限责任公司 | The self checking method and realization circuit of EMU auto-passing neutral section control system |
| CN109130953A (en) * | 2018-08-13 | 2019-01-04 | 中车兰州机车有限公司 | Automatic neutral-section passing system detection device |
| CN109211312A (en) * | 2018-08-17 | 2019-01-15 | 国网江苏省电力有限公司盐城供电分公司 | A kind of power car automatic passing phase insulator device on-line detecting system of the direct current supply mode with return wire |
| CN111301393A (en) * | 2020-03-26 | 2020-06-19 | 东风柳州汽车有限公司 | Automobile man-machine driving mode-shared braking control system and control method |
| CN111823957A (en) * | 2020-07-22 | 2020-10-27 | 中车株洲电力机车有限公司 | Vehicle-ground cooperative passing neutral-phase control method and system and rail transit vehicle |
| CN111823957B (en) * | 2020-07-22 | 2021-09-17 | 中车株洲电力机车有限公司 | Vehicle-ground cooperative passing neutral-phase control method and system and rail transit vehicle |
| CN112014675A (en) * | 2020-09-02 | 2020-12-01 | 中车大同电力机车有限公司 | Detection circuit and detection device of automatic passing neutral section system |
| CN112014675B (en) * | 2020-09-02 | 2023-08-29 | 中车大同电力机车有限公司 | Detection circuit and detection device of automatic passing neutral section system |
| CN112874389A (en) * | 2021-02-01 | 2021-06-01 | 重庆中车长客轨道车辆有限公司 | Operation protection method, device, equipment and computer readable storage medium |
| CN112874389B (en) * | 2021-02-01 | 2022-07-12 | 重庆中车长客轨道车辆有限公司 | Operation protection method, device, equipment and computer readable storage medium |
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