CN109557482A - The monitoring of railway signal input power and breaker remote start system and control method - Google Patents
The monitoring of railway signal input power and breaker remote start system and control method Download PDFInfo
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- CN109557482A CN109557482A CN201910068339.8A CN201910068339A CN109557482A CN 109557482 A CN109557482 A CN 109557482A CN 201910068339 A CN201910068339 A CN 201910068339A CN 109557482 A CN109557482 A CN 109557482A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- 230000005611 electricity Effects 0.000 claims abstract description 71
- 238000004891 communication Methods 0.000 claims abstract description 34
- 238000012423 maintenance Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Automation & Control Theory (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of monitoring of railway signal input power and breaker remote start systems, it is described by remote control computer, Ethernet, interchanger, PLC programming in logic circuit, I circuit breaker, II circuit breaker, the road I electricity grasps module, the road II electricity grasps module, the road I communication module, the road II communication module, RJ45 mould and button control cabinet composition, the remote control computer is connect by Ethernet and interchanger with the RJ45 module of PLC programming in logic circuit, the present invention also protects a kind of railway signal input power to monitor and breaker long-range control method, utilize remote control technology means, real-time monitoring and early warning are carried out to signal input power power grid, the work quality of power supply is grasped in time, when breaker is because of over-voltage, overcurrent, after the reasons such as ground connection disconnect automatically, combined floodgate can remotely be started, significantly Failure delay is compressed, conevying efficiency is improved.
Description
Technical field
The present invention relates to railway signal control technical field more particularly to a kind of monitorings of railway signal input power and open circuit
Device remote start system and control method.
Background technique
Railway is one of the important infrastructure of country, the main artery of country, popular mode of transportation, it has transport energy
Power is big, at low cost, less energy consumption, speed are high, many merits such as adaptable.Backbone status, iron are in integrated transportation system
The modernization of road technique equipment and information technology is to realize one of the key task of railway modernization, and rolling stock project is railway
The material base of transport, power-supply device operate normally for the safety of railway advanced technology resource and provide technical guarantee.
Signal power source is the power supply of railways train operation signal designation, belongs to first order load, generally by the electric power that automatically closes up
Route (abbreviation stick wire) and perforation power circuit (abbreviation through track) two-way power supply power supply.There was only the case where power supply all the way
Under, then electric power generating composition double-power supply loop all the way is drawn by local electricity system again.Two-way power supply is mutually redundant, and when failure mutually cuts
It changes, to improve power supply reliability.
Since by external influence to will appear power quality bad for signal-powered power supply, cause in signal power source lightning protection box
Hydraulic circuit breaker is fallen, and so as to cause whole station signalling arrangement power-off fault, can seriously affect conevying efficiency and traffic safety, for
Outlying unattended station and relay station but will cause the failure of overlength to be delayed.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of remote controlled and stable to power supply panel input power
The performance good monitoring of railway signal input power and breaker remote start system and control method, solve that peopleware is not high to ask
Topic reduces cost of labor, improves working efficiency, safe and reliable orderly management.
To achieve the above object, the present invention provides technical solution below: the monitoring of railway signal input power and breaker
Remote start system is by remote control computer, Ethernet, interchanger, PLC programming in logic circuit, I circuit breaker, the open circuit of the road II
Device, the road I electricity grasp module, and the road II electricity grasps module, the road I communication module, the road II communication module, RJ45 mould and button control cabinet composition,
The remote control computer is connect by Ethernet and interchanger with the RJ45 module of PLC programming in logic circuit, described
PLC programming in logic circuit grasps module to the road I electricity by data line and the road II electricity grasps module and assigns control instruction, the road I electricity behaviour and II
Electricity behaviour in road drives I circuit breaker and II circuit breaker to act respectively after being instructed, the I circuit breaker and II circuit breaker
7 pass through I0 and I1 by data line by the respective contact OF, by the make and break state of I circuit breaker and II circuit breaker respectively
PLC programming in logic circuit is passed in port；Meanwhile I circuit breaker and II circuit breaker pass through cable and the road I communication module and the road II
Communication module connection, and it is connected to the port SL1 of PLC programming in logic circuit, the external power grid that included monitoring modular 15 is acquired
The parameters such as voltage, electric current, frequency, the harmonic wave of input power utilize 485 communication moulds by the road I communication module and the road II communication module
Formula is transmitted to PLC programming in logic circuit, and PLC programming in logic circuit uploads to remote control computer 1 by Ethernet and interchanger,
The PLC programming in logic circuit is TM200CE24R using chip.
Further, the PLC programming in logic circuit is connect with outside UPS mobile power source, and UPS mobile power source directly by
Outer net 220V power voltage supply.
Further, the road I electricity behaviour module is connect with the port Q1 and Q2 of PLC programming in logic circuit respectively, the II
Electricity behaviour's module in road is connect with the port Q4 and Q5 of PLC programming in logic circuit respectively.
Further, the road I electricity behaviour's module and the road II electricity grasp module, I circuit breaker and II circuit breaker, the communication of the road I
Module and the road II communication module are all respectively three groups of identity units, while being all mounted on button control with PLC programming in logic circuit
Inside cabinet, meanwhile, it is respectively set on the panel of button control cabinet 19 and is opened there are two 18, three rotations of "on" position indicator light
Close 17 and four disconnected lock buttons 16, at the same four disconnected lock buttons 16 be followed successively by the road I close a floodgate, the road I break lock, the road II close a floodgate, the road II it is disconnected
Lock button.
A kind of monitoring of railway signal input power and breaker remotely start control method, include the following steps:
Step 1: when button control cabinet panel on three rotary switches at telemechanical position, by PLC programming in logic circuit into
After row logical process, combined floodgate, disconnected lock instruction are issued to electricity behaviour's module by the port Q1, Q2；
Step 2: grasping module to the road II electricity by the port Q4, Q5 again issues combined floodgate, disconnected lock instruction, meanwhile, the road I electricity grasps module, II
After electricity behaviour's module 6 in road is ordered, I circuit breaker and II circuit breaker is driven to execute corresponding combined floodgate, disconnected lock operation；
Step 3: I circuit breaker and II circuit breaker 7 are passed through the make and break state of respective breaker by the respective contact OF
Data line passes to the port I0 and I1 of PLC programming in logic circuit respectively, then uploads to long-range control by Ethernet and interchanger
Computer；Pass through the respective contact OF 13 simultaneously, the "on" position indicator light 18 on 19 panel of push button control cabinet is shown respectively
Show I circuit breaker 4 and the disconnected lock of II circuit breaker 7, "on" position；Step 4: when remote control computer receives PLC logic volume
The I circuit breaker that journey circuit transmits, II circuit breaker are logical by the road I communication module or the road II when wherein some is disconnected
Believe that the module control road I electricity grasps module, the road II electricity grasps module action, so that I circuit breaker or II circuit breaker are automatically performed closure
Operation.
Further, when button being controlled three rotary switches on cabinet panel in manual position, by PLC programming in logic
After circuit carries out logical process, remote control command is prohibited, and the road I on pressing control cabinet panel is closed a floodgate, break lock button, the road II
It closes a floodgate, disconnected lock button, meanwhile, can be closed a floodgate by the port Q1, Q2 of PLC programming in logic circuit to the behaviour's sending of module 5 of the road I electricity,
Disconnected lock instruction grasps module to the road II electricity by the port Q4, Q5 and issues combined floodgate, disconnected lock instruction, finally, the road I electricity grasps module, the road II electricity
After grasping module order, I circuit breaker is driven, II circuit breaker executes corresponding combined floodgate, disconnected lock operation.
Further, when button being controlled three rotary switches on cabinet panel in maintenance position, by PLC programming in logic
After circuit carries out logical process, remote control order and manual control commands will all be prohibited, and can at this time carry out to button
Equipment in cabinet carries out repair and maintenance.
Further, when the I circuit breaker and II circuit breaker are automatically performed closed procedure, if three times can not continuously
It is automatically performed closure, at this point, PLC programming in logic circuit stops working, alarm condition refers on 1 display interface of remote control computer
Show that lamp flashes, prompt need to be accomplished manually maintenance.
The beneficial effects of the present invention are: the present invention utilizes remote control technology means, signal input power power grid is carried out
Real-time monitoring and early warning grasp the work quality of power supply, when breaker because the reasons such as over-voltage, overcurrent, ground connection disconnect automatically in time
Afterwards, it can remotely start combined floodgate, greatly reduce failure delay, improve conevying efficiency.
Detailed description of the invention
Fig. 1 is frame connection schematic diagram of the invention；
Fig. 2 is remote control equipment connection schematic diagram；
Fig. 3 is control cabinet panel schematic diagram
1- remote control computer, 2- Ethernet, 3- interchanger, 4-I circuit breaker, the road 5-I electricity grasp module, the road 6-II electricity behaviour
Module, 7-II circuit breaker, 8-I communication module, 9-II communication module, 10-PLC programming in logic circuit, 11-RJ45 module, 12-
UPS mobile power source, the contact 13-OF, 14- cable, 15- monitoring modular, bis- nonstick buttons of 16-, tri- rotary switches of 17-,
18- "on" position indicator light 19- button control cabinet.
Specific embodiment
The monitoring of the invention will now be described in detail with reference to the accompanying drawings railway signal input power and breaker remote start system and
The preferred embodiment of control method.
Railway signal input power of the present invention monitors and breaker remote start system and control method as shown in Figs. 1-3
Specific embodiment: the monitoring of railway signal input power and breaker remote start system, by remote control computer 1, ether
Net 2, interchanger 3, PLC programming in logic circuit 10, I circuit breaker 4, II circuit breaker 7, the road I electricity grasp module 5, and the road II electricity grasps mould
Block 6, the road I communication module 8, the road II communication module 9, RJ45 mould 11 and button control cabinet 19 form, and remote control computer 1 passes through
11 pieces of RJ45 mould of Ethernet 2 and interchanger 3 and PLC programming in logic circuit 10 are connect, meanwhile, PLC programming in logic circuit 10 is logical
It crosses data line and assigns control instruction to the road I electricity behaviour's module 5 and the road II electricity behaviour's module 6, after electricity Cao He II road electricity behaviour in the road I is instructed
Drive I circuit breaker 4 and II circuit breaker 7 to act respectively, the road I electricity grasp module 5 respectively with the Q1 of PLC programming in logic circuit 10 and
The connection of the port Q2, the road II electricity behaviour's module 6 are connect with the port Q4 and Q5 of PLC programming in logic circuit 10 respectively.And PLC programming in logic
Circuit 10 is connect with outside UPS mobile power source 12, and UPS mobile power source 12, directly by outer net 220V power voltage supply, PLC logic is compiled
Journey circuit is TM200CE24R using chip.I circuit breaker 4 and II circuit breaker 7 are broken the road I by the respective contact OF 13
The make and break state of road device 4 and II circuit breaker 7 passes through the port I0 and I1 by data line respectively and passes to PLC programming in logic circuit
10；Meanwhile I circuit breaker 4 and II circuit breaker 7 are connect by cable 14 with the road I communication module 8 and the road II communication module 9, and
It is connected to the port SL1 of PLC programming in logic circuit 10, the electricity for the external power grid input power that included monitoring modular 15 is acquired
The parameters such as pressure, electric current, frequency, harmonic wave are transmitted to PLC using 485 communication patterns by the road I communication module 8 and the road II communication module 9
Programming in logic circuit 10, PLC programming in logic circuit 10 upload to remote control computer 1 by Ethernet 2 and interchanger 3.Together
When, the road I electricity behaviour's module 5 and the road II electricity grasp module 6, I circuit breaker 4 and II circuit breaker 7, the road I communication module 8 and II
Road communication module 9 is all respectively three groups of identity units, while being all mounted in button control cabinet 19 with PLC programming in logic circuit 10
Face, meanwhile, it is respectively set on the panel of button control cabinet 19 there are two 18, three rotary switches 17 of "on" position indicator light
And four two nonstick buttons 16, while four disconnected lock buttons 16 are followed successively by the road I combined floodgate, the disconnected lock in the road I, the road II combined floodgate, the road II
Disconnected lock button.
A kind of monitoring of railway signal input power and breaker remotely start control method, include the following steps:
Step 1: when three rotary switches 17 on 19 panel of button control cabinet are at telemechanical position, by PLC programming in logic electricity
After road 10 carries out logical process, combined floodgate, disconnected lock instruction are issued to electricity behaviour's module 5 by the port Q1, Q2；
Step 2: grasping module 6 to the road II electricity by the port Q4, Q5 again issues combined floodgate, disconnected lock instruction, meanwhile, the road I electricity grasps module 5,
After electricity behaviour's module 6 in the road II is ordered, I circuit breaker 4 and II circuit breaker 7 is driven to execute corresponding combined floodgate, disconnected lock operation；
Step 3: I circuit breaker 4 and II circuit breaker 7 pass through the respective contact OF 13, by the make and break state of respective breaker
It passes to the port I0 and I1 of PLC programming in logic circuit 10 respectively by data line, then is uploaded to by Ethernet 2 and interchanger 3
Remote control computer 1；Pass through the respective contact OF 13 simultaneously, the "on" position instruction on 19 panel of push button control cabinet
Lamp 18 shows I circuit breaker 4 and the disconnected lock of II circuit breaker 7, "on" position respectively.
Step 4: when remote control computer 1 receives the I circuit breaker 4 that PLC programming in logic circuit 10 transmits, the road II is disconnected
Road device 7 passes through the road I communication module 8 or the road II communication module 9 controls the road I electricity and grasps module 5, II when wherein some is disconnected
Road electricity is grasped module 6 and is acted, so that I circuit breaker 4 or II circuit breaker 7 are automatically performed closed procedure；
Meanwhile when three rotary switches 17 on 19 panel of button control cabinet in manual position, by PLC programming in logic electricity
After road 10 carries out logical process, remote control command is prohibited, two nonstick buttons 16 on pressing control cabinet panel, together
When, module 5 can be grasped to the road I electricity by the port Q1, Q2 of PLC programming in logic circuit 10 and issue combined floodgate, disconnected lock instruction, passed through
The port Q4, Q5 issues combined floodgate, disconnected lock instruction to the road II electricity behaviour's module 6, finally, the road I electricity grasps module 5, the road II electricity grasps the acquisition of module 6
After order, I circuit breaker 4 is driven, II circuit breaker 7 executes corresponding combined floodgate, disconnected lock operation.
When three rotary switches 17 on 19 panel of button control cabinet in maintenance position, by PLC programming in logic electricity
After road 10 carries out logical process, remote control order and manual control commands will all be prohibited, and can at this time carry out to button
Equipment in cabinet carries out repair and maintenance.
When the I circuit breaker 4 and II circuit breaker 7 are automatically performed closed procedure, if continuous three times can not be automatic complete
At closure, at this point, PLC programming in logic circuit 10 stops working, status indicator lamp of alarming on 1 display interface of remote control computer
18 flashings, prompt need to be accomplished manually maintenance.
The above are merely the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art,
Without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (8)
1. the monitoring of railway signal input power and breaker remote start system, it is characterised in that: described by remotely controlling calculating
Machine 1, Ethernet 2, interchanger 3, PLC programming in logic circuit 10, I circuit breaker 4, II circuit breaker 7, the road I electricity grasp module 5, II
Road electricity is grasped module 6, the road I communication module 8, the road II communication module 9, RJ45 mould 11 and button control cabinet 19 and is formed, the long-range control
Computer 1 processed is connect by 11 pieces of RJ45 mould of Ethernet 2 and interchanger 3 and PLC programming in logic circuit 10, the PLC logic
Programmed circuit 10 grasps module 5 to the road I electricity by data line and the road II electricity grasps module 6 and assigns control instruction, the road the I road electricity Cao He II electricity
Behaviour drives I circuit breaker 4 and II circuit breaker 7 to act respectively after being instructed, the I circuit breaker 4 and II circuit breaker 7 are logical
The respective contact OF 13 is crossed, the make and break state of I circuit breaker 4 and II circuit breaker 7 is passed through into I0 and I1 by data line respectively
PLC programming in logic circuit 10 is passed in port；Meanwhile I circuit breaker 4 and II circuit breaker 7 pass through cable 14 and the road I communication module
The road 8 and II communication module 9 connects, and is connected to the port SL1 of PLC programming in logic circuit 10, and included monitoring modular 15 is adopted
The parameters such as voltage, electric current, frequency, the harmonic wave of external power grid input power of collection pass through the road I communication module 8 and the road II communication module 9
It is transmitted to PLC programming in logic circuit 10 using 485 communication patterns, PLC programming in logic circuit 10 passes through on Ethernet 2 and interchanger 3
Pass to remote control computer 1.
2. railway signal input power monitoring according to claim 1 and breaker remote start system, it is characterised in that:
The PLC programming in logic circuit 10 is connect with outside UPS mobile power source 12, and UPS mobile power source 12 is directly by outer net 220V electricity
Pressure power supply.
3. railway signal input power monitoring according to claim 1 and breaker remote start system, it is characterised in that:
Electricity behaviour's module 5 in the road I is connect with the port Q1 and Q2 of PLC programming in logic circuit 10 respectively, and the road II electricity is grasped module 6 and distinguished
It is connect with the port Q4 and Q5 of PLC programming in logic circuit 10.
4. railway signal input power monitoring according to claim 1 and breaker remote start system, it is characterised in that:
The road I electricity grasps module 5 and the road II electricity grasps module 6, I circuit breaker 4 and II circuit breaker 7, and the road I communication module 8 and the road II are logical
Believing module 9 all is respectively three groups of identity units, while being all mounted on 19 faces in button control cabinet with PLC programming in logic circuit 10.
5. railway signal input power monitoring according to claim 1 and breaker remotely start control method, feature
It is: includes the following steps:
Step 1: when three rotary switches 17 on 19 panel of button control cabinet are at telemechanical position, by PLC programming in logic electricity
After road 10 carries out logical process, combined floodgate, disconnected lock instruction are issued to electricity behaviour's module 5 by the port Q1, Q2；
Step 2: grasping module 6 to the road II electricity by the port Q4, Q5 again issues combined floodgate, disconnected lock instruction, meanwhile, the road I electricity grasps module 5,
After electricity behaviour's module 6 in the road II is ordered, I circuit breaker 4 and II circuit breaker 7 is driven to execute corresponding combined floodgate, disconnected lock operation；
Step 3: I circuit breaker 4 and II circuit breaker 7 pass through the respective contact OF 13, by the make and break state of respective breaker
It passes to the port I0 and I1 of PLC programming in logic circuit 10 respectively by data line, then is uploaded to by Ethernet 2 and interchanger 3
Remote control computer 1；Pass through the respective contact OF 13, the "on" position indicator light on 19 panel of push button control cabinet simultaneously
18, I circuit breaker 4 and the disconnected lock of II circuit breaker 7, "on" position are shown respectively；Step 4: when remote control computer 1 is received
The I circuit breaker 4 transmitted to PLC programming in logic circuit 10, II circuit breaker 7 are logical by the road I when wherein some is disconnected
Believe that module 8 or the road II communication module 9 control the road I electricity and grasp module 5, the road II electricity is grasped module 6 and acted, so that I circuit breaker 4 or the road II
Breaker 7 is automatically performed closed procedure.
6. railway signal input power monitoring according to claim 5 and breaker remotely start control method, feature
Be: when three rotary switches 17 on 19 panel of button control cabinet in manual position, by PLC programming in logic circuit 10
After carrying out logical process, remote control command is prohibited, and presses two nonstick buttons 16 on 19 panel of control cabinet, meanwhile,
Module 5 can be grasped to the road I electricity by the port Q1, Q2 of PLC programming in logic circuit 10 and issue combined floodgate, disconnected lock instruction, pass through Q4, Q5
Port issues combined floodgate, disconnected lock instruction to the road II electricity behaviour's module 6, finally, the road I electricity grasps module 5, electricity behaviour's module 6 in the road II is ordered
Afterwards, I circuit breaker 4 is driven, II circuit breaker 7 executes corresponding combined floodgate, disconnected lock operation.
7. railway signal input power monitoring according to claim 5 and breaker remotely start control method, feature
Be: when three rotary switches 17 on 19 panel of button control cabinet in maintenance position, by PLC programming in logic circuit 10
After carrying out logical process, remote control order and manual control commands will all be prohibited, and can at this time carry out in button cabinet
Equipment carry out repair and maintenance.
8. railway signal input power monitoring according to claim 5 and breaker remotely start control method, feature
It is: when the I circuit breaker 4 and II circuit breaker 7 are automatically performed closed procedure, is closed if can not continuously be automatically performed three times
It closes, at this point, PLC programming in logic circuit 10 stops working, instruction state lamp 18 of alarming on 1 display interface of remote control computer dodges
Bright, prompt need to be accomplished manually maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910068339.8A CN109557482B (en) | 2019-01-24 | 2019-01-24 | Railway signal input power supply monitoring and circuit breaker remote starting system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910068339.8A CN109557482B (en) | 2019-01-24 | 2019-01-24 | Railway signal input power supply monitoring and circuit breaker remote starting system and control method |
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| CN109557482B CN109557482B (en) | 2024-05-28 |
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| CN109557482B (en) | 2024-05-28 |
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