CN112952770A - Intelligent safety power cut-off/transmission system and method - Google Patents

Intelligent safety power cut-off/transmission system and method Download PDF

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Publication number
CN112952770A
CN112952770A CN202110104227.0A CN202110104227A CN112952770A CN 112952770 A CN112952770 A CN 112952770A CN 202110104227 A CN202110104227 A CN 202110104227A CN 112952770 A CN112952770 A CN 112952770A
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CN
China
Prior art keywords
control module
box
plc control
power
grounding
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Pending
Application number
CN202110104227.0A
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Chinese (zh)
Inventor
许学平
戚斌
周之超
陆志强
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Shanghai Rail Transit Maintenance Support Co ltd
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Shanghai Rail Transit Maintenance Support Co ltd
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Priority to CN202110104227.0A priority Critical patent/CN112952770A/en
Publication of CN112952770A publication Critical patent/CN112952770A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

The invention provides an intelligent safe power cut/transmission system, comprising: the PLC control module is provided with a power cut/transmission program corresponding to a power cut/transmission operation flow of the touch network cable; the switch blade mechanism box is internally provided with a switch blade control mechanism for driving the switch blade of the touch net wire to be switched on and off; the grounding rod lock box is used for placing a grounding rod and identifying whether the grounding rod is placed in the grounding rod lock box, and generating and sending a grounding rod in-place/out-of-place signal to the PLC control module according to an identification result; the grounding wire lockset box is used for placing a grounding wire; the PLC control module generates command signals for opening/closing the switch blade mechanism box, the grounding rod lock box and the grounding wire lock box according to the access control card information and the power-off/power-on program identified by the switch blade mechanism box control module, the grounding rod lock box and the grounding wire lock box. The invention also provides an intelligent safe power cut-off/transmission method.

Description

Intelligent safety power cut-off/transmission system and method
Technical Field
The invention relates to the field of subway train maintenance, in particular to an intelligent safe power cut-off/transmission system and method.
Background
A touch net wire is arranged above the subway train, the voltage of the touch net wire is 1500V direct current, and the touch net wire is electrically connected with a pantograph at the top of the subway train to provide power for the operation of the subway train. In general, roof equipment (such as train air conditioners, pantographs and the like) needs to be lifted up to a roof maintenance platform for maintenance in a garage. For safety, the car roof is required to be subjected to power off operation by touching the net in the garage. In order to prevent sudden incoming calls, a grounding rod needs to be hung, one end of the grounding rod is fixed on the touch screen, the other end of the grounding rod is fixed on a rail, and then the rail goes to a high-rise maintenance platform to maintain the equipment on the top of the train. After the maintenance operation is completed, the grounding rod must be removed, and then the operation of touching the network and transmitting power is carried out.
For the current Shanghai subway, with the gradual expansion of the operation scale of the subway and the gradual increase of the number of operation trains, the equipment for checking the roof of the subway vehicle by climbing the top is a normalized overhaul project. At present, the common power cut-off/power transmission operation flow is carried out by adopting a manual mechanical locking mode of double-person operation (one-person operation and one-person monitoring). All the operations of the current power cut-off/transmission protection depend on whether an operator executes the operations according to a preset flow, and the mode has the hidden danger of human errors. The method is characterized in that a person who operates by one person or has no power-off/power-transmission operation certificate carries out power-off/power-transmission operation, an operator breaks by mistake and power-transmission by mistake, after the brake is broken, the grounding rod is hung without electricity inspection, the maintenance platform is mistakenly rushed without safety power-off, the grounding rod is not dismounted to carry out power-transmission operation and other misoperation, and personal casualties and equipment damage accidents caused by misoperation occur occasionally.
Therefore, it is highly desirable to provide an intelligent safety power cut/transmission system and an intelligent safety power cut/transmission method suitable for overhauling equipment on the top of a subway train in combination with the existing power cut/transmission operation control process of the subway, so as to get rid of the dependence on operators, ensure the safety of personnel and equipment in the operation process, thoroughly eliminate various potential safety hazards existing in the power cut/transmission operation process of a touch network cable, and ensure the orderly execution of the operation process by power cut/transmission.
Disclosure of Invention
The invention aims to provide an intelligent safety power cut/transmission system and method, which can intelligently manage the power cut/transmission flow of a touch network wire when the roof equipment of a subway train is overhauled, ensure that workers carry out power cut/transmission operation on the touch network wire according to set steps, prevent various misoperation, ensure the personal safety of the workers and effectively prevent the roof equipment from being damaged.
In order to achieve the above object, the present invention provides an intelligent safety power cut/transmission system for repairing equipment on the top of a subway train, wherein the power cut/transmission of a touch wire is realized by controlling a rotating rod of a touch wire isolating switch to rotate around a central axis thereof, the system comprising: the device comprises a PLC control module, a switch blade mechanism box, a grounding rod lock box and a grounding wire lock box;
the PLC control module comprises a power cut/transmission program corresponding to a power cut/transmission operation process of a touch network cable;
a switch blade control mechanism for driving the rotating rod to rotate is arranged in the switch blade mechanism box;
the grounding rod lock box is used for placing a grounding rod; the grounding rod lockset box also identifies whether a grounding rod is placed in the grounding rod lockset box, and generates and sends a grounding rod in-place/out-of-place signal to the PLC control module according to the identification result;
the grounding wire lockset box is used for placing a grounding wire;
the switch blade mechanism box control module, the grounding rod lock box and the grounding wire lock box also respectively identify an access card of a worker and send read access card information to the PLC control module; the PLC control module opens/closes the switch blade mechanism box, the grounding rod lock box and the grounding wire lock box according to the received entrance guard card information and the generation corresponding to the power cut/transmission program.
Preferably, the intelligent safety power cut/transmission system further comprises an upper computer in communication connection with the PLC control module; the upper computer is used for verifying the operation authority of a worker and sending an off/power transmission mode starting instruction corresponding to the off/power transmission program to the PLC control module; the upper computer also sends a station track number to be disconnected/powered and an ID number of a worker performing disconnection/powered operation to the PLC control module; the worker ID number is used for uniquely identifying worker identity information; the entrance guard card information comprises a staff ID number and the stock track number.
Preferably, the knife mechanism box control module comprises: the device comprises a first card reading module, a first control module, a closing indicator lamp and an opening indicator lamp;
the first card reading module is used for identifying an access card of a worker and reading access card information of the access card;
the first electromagnetic lock is used for locking a box door of the knife switch mechanism box;
the first control module is used for sending the entrance guard card information read by the first card reading module to the PLC control module and receiving an instruction signal for opening/closing the knife switch mechanism box sent by the PLC control module to drive the first electromagnetic lock to be unlocked/locked;
the switching-off and switching-on indicating lamp is used for indicating the switching-off and switching-on states of the network cable knife;
the knife switch mechanism box also comprises a first control module, wherein the first control module is in signal connection with the knife switch mechanism box: the power failure protection device comprises a first electromagnetic lock, a knife switch mechanism box power failure protection device and a first micro-motion limit travel switch;
the power-down protection device of the switch blade mechanism box is used for closing a box door of the switch blade mechanism box under the condition that the first control module is powered off;
the first inching limit travel switch is used for detecting the opening/closing state of the door of the knife switch mechanism box and sending a knife switch mechanism box opening/closing state signal to the PLC control module through the first control module according to a detection result.
Preferably, the ground bar lock box comprises: the device comprises a hollow ground rod lock box body, a second control module, a second card reading module, a photoelectric switch, a second electromagnetic lock, a second micro limit travel switch and a ground rod lock box power-off protection device, wherein the second card reading module, the photoelectric switch, the second electromagnetic lock, the second micro limit travel switch and the ground rod lock box power-off protection device are in signal connection with the second control module;
one side surface of the grounding rod lock box forms a grounding rod lock box door; a first opening/a second opening is formed between the top/bottom surface of the box body of the ground rod lock box and the box door of the ground rod lock box; the first opening corresponds to the second opening in position, and the grounding rod lock box is sleeved outside the grounding rod through the first opening and the second opening;
the second card reading module is used for identifying the access card of the worker and reading the access card information of the access card;
the second electromagnetic lock is used for locking a box door of the ground rod lock box;
the second control module is used for sending the entrance guard card information read by the second card reading module to the PLC control module and driving the second electromagnetic lock to be unlocked/locked according to the instruction signal sent by the PLC control module for opening/closing the ground rod lock box;
the photoelectric switch is arranged in the grounding rod lock box body and used for identifying whether the grounding rod is placed in the grounding rod lock box body or not, and generating and sending a grounding rod in-place/out-of-place signal to the PLC control module according to an identification result;
the ground rod lock box power-down protection device is used for closing a box door of the ground rod lock box under the condition that the second control module is powered off;
the second micro limit travel switch is used for detecting the opening/closing state of the door of the ground rod lock box and sending a signal of the opening/closing state of the ground rod lock box to the PLC control module through the second control module according to a detection result.
Preferably, the ground wire lock box includes: the third control module is in signal connection with the PLC control module, and the third card reading module, the third electromagnetic lock, the third inching limit travel switch and the ground wire lock box power-down protection device are in signal connection with the third control module;
the third card reading module is used for identifying the access card of a worker and reading the access card information of the access card;
the third electromagnetic lock is used for locking a box door of the grounding wire lockset box;
the third control module is used for sending the entrance guard card information read by the third card reading module to the PLC control module and driving the third electromagnetic lock to unlock/lock according to the instruction signal sent by the PLC control module for opening/closing the ground wire lockset box;
the ground wire lockset box power-down protection device is used for closing a box door of the ground wire lockset box under the condition that the third control module is powered off;
the third inching limit travel switch is used for detecting the opening/closing state of the door of the ground wire lock box and sending a signal of the opening/closing state of the ground wire lock box to the PLC control module through the third control module according to the detection result;
the grounding wire lockset box is also used for placing an operating head and a grounding clip of the grounding rod.
Preferably, a power-on in-place limit switch and a power-off in-place limit switch which are in signal connection with the first control module are arranged at the top of the knife switch mechanism box; a stop block is fixedly arranged at the bottom of the rotating rod and is positioned between the power-on and power-off in-place limit switches; by rotating the rotating rod, the stop block triggers the power transmission in-place limit switch and the power failure in-place limit switch to generate corresponding power transmission in-place signals and power failure in-place signals; and sending the power transmission in-place signal and the power failure in-place signal to the PLC control module through the first control module.
Preferably, the intelligent safety power cut/transmission system further comprises a roof service platform lock control module, which is used for opening/closing a fourth electromagnetic lock on a door of the roof service platform; a fourth inching limit travel switch is also arranged on the car roof access platform door;
roof overhauls platform tool to lock control module contains: the fourth control module and the fourth card reading module; the fourth control module is in signal connection with the PLC control module, the fourth card reading module, the fourth inching limit travel switch and the fourth electromagnetic lock;
the fourth card reading module is used for identifying an access card of a worker and reading access card information of the access card;
the fourth control module is used for sending the entrance guard card information read by the fourth card reading module to the PLC control module and driving the fourth electromagnetic lock to be unlocked/locked according to the instruction signal sent by the PLC control module for opening/closing the car roof access platform door;
and the fourth micro limit travel switch is used for detecting the opening/closing state of the roof access platform door and sending a roof access platform door opening/closing state signal to the PLC control module through the fourth control module according to the detection result.
Preferably, the intelligent safety power cut/transmission system further comprises a communication module, and signal transmission between the PLC control module and the first to fourth control modules is realized through the communication module.
The invention also provides an intelligent safe power cut/transmission method which is realized by adopting the intelligent safe power cut/transmission system and comprises the following steps:
s1, verifying the operation authority of the worker by the upper computer, and writing the station track number to be disconnected/powered into the access card of the worker by the upper computer if the verification is passed; the PLC control module receives and stores a power-off mode starting instruction corresponding to a power-off program and the access card information of the staff, which are sent by the upper computer;
s2, the staff swipes an entrance guard card to the knife switch mechanism box control module, the knife switch mechanism box control module sends the identified entrance guard card information to the PLC control module, and the PLC control module compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module sends a command signal for opening the knife switch mechanism box, and the step enters S3; otherwise, go to S6;
s3, opening the door of the knife switch mechanism box, driving the rotating rod to rotate by a worker, and closing the door of the knife switch mechanism box after completing the power-off operation of the touch network cable; if the PLC control module receives the power-off in-place signal within the set time, the step S4 is carried out; otherwise, go to S6;
s4, checking electricity of a touch network wire of a station road to be powered off by a worker, swiping an entrance guard card to a ground rod lock box by the worker if the touch network wire is not electrified, sending the identified entrance guard card information to a PLC control module by the ground rod lock box, and comparing the received entrance guard card information with the stored entrance guard card information by the PLC control module; if the comparison result is consistent, the PLC control module sends a command signal for opening the grounding rod lock box, and the worker takes out the grounding rod and enters S5; otherwise, go to S6;
s5, a worker swipes an entrance guard card to the ground wire lock box, the ground wire lock box sends the identified entrance guard card information to the PLC control module, and the PLC control module compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module sends a command signal for opening the grounding wire lockset box; the method comprises the following steps that a worker assembles a grounding rod, installs a grounding clamp on a rail of a station track to be powered off, and hangs an operating head on a net touching line through a grounding rod to complete the power-off operation of the station track net touching line;
and S6, the PLC control module sends an alarm signal to the upper computer and then stops working.
Preferably, the intelligent safety power cut/transmission method further includes the steps of:
s7, after the worker confirms that the roof overhaul platform is unmanned, sending a power transmission mode starting instruction corresponding to the power transmission program to the PLC control module through the upper computer;
s8, removing the grounding rod by a worker, and swiping an entrance guard card to the grounding wire lockset box; the PLC control module compares the received and stored access control card information; if the comparison result is consistent, the grounding wire lock box is opened, and a worker puts the grounding wire, the grounding clamp and the operating head into the ground wire lock box and closes the grounding wire lock box; if the comparison result is not consistent, entering S12;
s9, a worker swipes an entrance guard card to the ground rod lock box; the PLC control module compares the received and stored access control card information; if the comparison result is consistent, the grounding rod lock box is opened, and the worker puts in the grounding rod and closes the grounding rod lock box; if the comparison result is not consistent, entering S12;
s10, a worker swipes an access card to the control module of the knife switch mechanism box, and the PLC control module compares the received access card information with the stored access card information; if the comparison result is consistent, the box door of the knife switch mechanism is opened, and the step S11 is entered; if the comparison result is not consistent, entering S12;
s11, the staff drives the rotating rod to rotate, and the door of the knife switch mechanism box is closed after the power transmission operation of the net touching wire is completed; if the PLC control module receives a power transmission in-place signal within the set time, completing power transmission operation of the network cable contacted by the station track;
and S12, the PLC control module sends an alarm signal to the upper computer and then stops working.
Compared with the prior art, the invention has the beneficial effects that:
1) by the intelligent power cut-off/transmission safety system and the intelligent power cut-off/transmission safety method, the power cut-off/transmission flow of a site can be effectively monitored, the misoperation step can be found in time, various safety accidents in the power cut-off/transmission process of a touch net wire can be prevented, the personal safety of workers is ensured, and the damage to vehicle roof equipment is effectively prevented;
2) in the invention, the information of the station track to be subjected to power cut/transmission operation is written into the access card of a worker, so that the power cut/transmission operation of the wrong station track is prevented;
3) in the invention, the power cut/transmission flow of the touch network cable is intelligently managed, and a power cut/transmission program corresponding to the power cut/transmission operation flow is written into a PLC control module; in the power-off process, a worker should open the switch blade mechanism box, the grounding rod lock box and the grounding wire lock box in sequence; in the power transmission process, a worker opens the ground wire lock box, the ground rod lock box and the switch blade mechanism box in sequence, if the worker does not perform 'jumping' operation according to a set flow, the PLC control module considers that the operation does not accord with the set program, the operation cannot be performed, and the upper computer receives alarm information sent by the PLC control module;
4) in the power-off operation, if the PLC control module does not receive a power-off in-place signal after the switch blade mechanism box is opened, the door of the grounding rod lock box cannot be opened subsequently, and the next operation cannot be carried out; in the power transmission operation, if the PLC control module does not receive a power transmission in-place signal after the switch blade mechanism box is opened, the PLC control module gives an alarm to the upper computer; the invention effectively ensures the disconnection/power-on in-place of the touch network wire;
5) the invention can also detect whether the working personnel closes the door of the switch blade mechanism box, the switch blade mechanism box control module, the grounding rod lock box and the grounding wire lock box or not, and whether the grounding rod is reset or not, thereby strengthening the scientific management of the power failure/transmission operation flow.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are an embodiment of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts according to the drawings:
FIG. 1 is a schematic diagram of a prior art isolating switch for a railway traffic contact network cable;
fig. 2 and 3 are schematic structural diagrams of the intelligent safety power cut-off/transmission system according to the present invention;
fig. 4A and 4B are schematic diagrams of a knife mechanism box, a knife mechanism box control module and a rotating rod according to the present invention;
FIG. 4C is a schematic diagram of a first electromagnetic lock, a power-down protection device and a first inching limit travel switch of the knife switch mechanism box according to the present invention;
FIG. 5 is a schematic view of a ground bar lock box of the present invention;
FIG. 6 is a schematic view of a ground wire lock box according to the present invention;
FIG. 6A is a schematic diagram of a third electromagnetic lock and a third inching limit travel switch of the ground wire lock box of the invention
FIG. 7 is a schematic view of a roof inspection platform according to the present invention;
FIG. 8 is a schematic view of a fourth electromagnetic lock of the present invention;
FIG. 9 is a schematic view of the power-off operation of the cable before the car roof equipment is overhauled;
fig. 10 is a schematic view of a power transmission operation flow of a touch wire after the vehicle roof equipment is overhauled;
in the figure: a1, a roof equipment inspection platform a2 and a post insulator; a3, operating insulators; a4, knife switch; a5, rotating rod; a6, a grounding bar; a7, ground line; a8, operating head; a9, grounding clip; a10, touching the net wire; a11, stop block.
100. A knife mechanism case; 101. a first electromagnetic lock; 102. a power failure protection device for the knife switch mechanism box; 103. a first inching limit travel switch; 104. a power transmission in-place limit switch; 105. a power-off in-place limit switch;
200. a knife switch mechanism box control module; 201. a first card reading module; 202. a switch-on indicator light; 203. a brake-off indicator light;
300. a ground bar lockset box; 301. a second control module; 302. the power failure protection device comprises a second card reading module, a second card reading module 303, a photoelectric switch 304, a second electromagnetic lock 305, a second micro limit travel switch 306 and a ground rod lock box; 307. a first opening; 308. a second opening;
400. a ground wire lockset box; 401. a third control module signal; 402. a third card reading module, 403 and a third electromagnetic lock; 404. a third inching limit travel switch; 405. a power failure protection device of a ground wire lockset box;
500. a lock control module of the roof overhaul platform; 501. a fourth electromagnetic lock;
600. a PLC control module;
700. an image acquisition module;
800. an upper computer;
900. and a communication module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the isolation switch of the rail contact network line is generally of a double-column vertical on-off structure. The isolating switch comprises two post insulators a2, an operating insulator a3, a knife switch a4 and a rotating rod a 5. The rotating rod a5 rotates around the central shaft of the rotating rod a4, so that the switch-on and the switch-off of the switch blade a4 are realized, the network cable is touched to supply power when the switch blade is switched on, and the network cable is touched to cut off the power when the switch blade is switched off. Before the subway train roof equipment is overhauled, the touch net wire on the corresponding station track is powered off, a worker can climb the roof overhauling platform to overhaul, and the power supply of the touch net wire is recovered after overhauling.
The switch blade lock box comprises a switch blade control mechanism which is arranged below the rotating rod and fixedly connected with the bottom of the rotating rod. The disconnecting switch switching-on and switching-off is realized by driving the rotating rod to rotate around the central shaft of the disconnecting switch control mechanism (the prior art).
When the power-off operation of the touch wire is carried out, in order to prevent sudden power-on, a grounding rod is required to be arranged between the touch wire and a rail. The ground rod is composed of an insulating ground rod, a ground wire, an operating head and a ground clamp. The grounding clip made of metal is fixedly connected with the rail, the grounding wire is electrically connected between the grounding clip and the operating head, and the operating head is hung on the touch screen and is electrically connected with the touch screen. Meanwhile, one end of the insulating grounding rod is detachably connected with the operating head, and the operating head is hung on the touch screen through the grounding rod.
The invention provides an intelligent safe power cut-off/transmission system which is used for overhauling equipment on the top of a subway train. As shown in fig. 2 and 3, the system includes: the device comprises an upper computer 800, a PLC control module 600, a switch blade mechanism box control module 200, a switch blade mechanism box 100, a grounding rod lock box 300, a grounding wire lock box 400, a roof maintenance platform lock control module 500 and a communication module 900.
The upper computer 800 is configured to verify an operation authority of the worker (for example, by inputting an account and an account password of the worker), and the worker sends a power cut/transmission mode start instruction corresponding to a power cut/transmission program to the PLC control module 600 through the upper computer 800 according to a power cut/transmission operation to be performed. The upper computer 800 also transmits a station number to be disconnected/powered and an ID number of a worker performing disconnection/powered operation to the PLC control module 600, and these pieces of information are stored in the PLC control module 600. The worker ID number is used for uniquely identifying worker identity information; the entrance guard card information comprises a staff ID number and the stock track number. The operating personnel punches the access card to open the switch blade mechanism box 100, the grounding rod lock box 300, the grounding wire lock box 400 and the roof maintenance platform lock control module 500 to open the switch blade mechanism box 300, the grounding rod lock box 300, the grounding wire lock box 400 and the roof maintenance platform door.
The PLC control module 600 is provided with a power cut/transmission program corresponding to the power cut/transmission operation procedure of the touch wire. In the embodiment of the present invention, if the power-off operation is performed on the touch wire, the worker should sequentially swipe the access card through the blade mechanism box control module 200, the ground rod lock box 300, the ground wire lock box 400, and the roof inspection platform lock control module 500, and if a "jump" occurs, the worker cannot perform the subsequent operation through the power-off program in the PLC control module 600 (for example, swipe the access card through the ground wire lock box 400 before opening the ground rod lock box 300, and cannot open the ground wire lock box 400). If the power transmission operation is performed on the touch network cable, the worker should sequentially swipe the access card to open the roof access platform door, the ground wire lock box 400, the ground rod lock box 300, and the switch blade mechanism box 100, and if the "jump" occurs, the subsequent operation cannot be performed through the power transmission program in the PLC control module 600.
As shown in fig. 4A and 4B, the blade mechanism box control module 200 includes: a first card reading module 201, a first control module (not shown in the figure, disposed in the knife switch mechanism box control module 200), a closing indicator lamp 202, and an opening indicator lamp 203.
A knife control mechanism (not shown) for driving the rotation of the rotating rod is provided in the knife mechanism box 100. As shown in fig. 4C, the knife mechanism box 100 is further provided with a signal connection with the first control module: a first electromagnetic lock 101, a power failure protection device 102 of a knife switch mechanism box and a first micro-motion limit travel switch 103.
The first card reading module 201 is used for identifying an access card of a worker and reading access card information of the access card. The first electromagnetic lock 101 is used to lock the door of the blade mechanism case 100. The first control module is configured to send the access card information read by the first card reading module 201 to the PLC control module 600, and the PLC control module 600 compares the received access card information with the stored access card information, and sends an instruction signal for opening/closing the knife mechanism box 100 to the first control module according to the comparison result, the received power cut/transmission mode start instruction, and the built-in power cut/transmission program. The opening and closing indicator lamp 202 is arranged outside the knife switch mechanism box control module 200, and indicates the opening and closing states of the knife switch of the touch net wire through the on and off of the opening indicator lamp 203 and the closing indicator lamp 202.
The first electromagnetic lock 101 is unlocked/locked in accordance with a command signal for opening/closing the blade mechanism case 100 sent from the first control module.
The knife mechanism box power down protection device 102 is used to close the door of the knife mechanism box 100 in the event of a power outage to the first control module.
The first inching limit travel switch 103 is used for detecting the opening/closing state of the door of the knife switch mechanism box and sending a knife switch mechanism box opening/closing state signal to the PLC control module 600 through the first control module according to the detection result.
As shown in fig. 4A and 4B, in the embodiment of the present invention, a power-on-position limit switch 104 and a power-off-position limit switch 105, which are in signal connection with the first control module, are disposed at the top of the knife mechanism box; a stop block is fixedly arranged at the bottom of the rotating rod and is positioned between the power-on and power-off in-place limit switches 105; by rotating the rotating rod, the stop block triggers the power transmission in-place limit switch 104 and the power failure in-place limit switch 105 to generate corresponding power transmission in-place signals and power failure in-place signals; and sending the power transmission in-place signal and the power failure in-place signal to the PLC control module 600 through the first control module.
In the power-off operation of the embodiment of the present invention, after the worker swipes the switch blade mechanism box 100 to perform the power-off operation, the switch blade mechanism box 100 is closed. After the PLC control module 600 receives a switch mechanism box open state signal sent by the first inching limit travel switch 103 (in this embodiment, the model of the first inching limit travel switch 103 is YBLX-ME-8108), if the power-off in-place signal is not received within a set time (the power-off operation of the worker is not in place), the PLC control module 600 sends an alarm signal to the upper computer 800, and the switch mechanism box 100 is closed by the first electromagnetic lock 101; finally, the PLC control module 600 stops working, i.e., does not respond to the received door access card information any more, and therefore the ground rod lock box 300 and the ground wire lock box 400 cannot be opened subsequently, and the roof inspection platform door cannot be opened. The ground rod can be prevented from being hung or the roof maintenance platform can be climbed to carry out maintenance operation under the condition that the contact net wire is provided with points, safety accidents are prevented from occurring, and the life safety of workers is guaranteed.
If the PLC control module 600 does not receive the power transmission in-place signal within the set time after the worker punches the card to open the knife mechanism box 100 to perform the power transmission operation, the PLC control module 600 transmits an alarm signal to the upper computer 800.
Ground rod tool to lock case 300 is used for placing the ground rod. The ground rod lock box 300 further identifies whether the ground rod is placed in the ground rod lock box, and generates and sends an in-place/out-of-place signal of the ground rod to the PLC control module 600 according to the identification result.
As shown in fig. 5, the ground bar locker box 300 comprises: the device comprises a hollow ground rod lock box body, a second control module 301, a second card reading module 302, a photoelectric switch 303, a second electromagnetic lock 304, a second micro limit travel switch 305 and a ground rod lock box power-down protection device 306, wherein the second card reading module 302, the photoelectric switch 303, the second electromagnetic lock 304, the second micro limit travel switch 305 and the ground rod lock box power-down protection device are in signal connection with the second control module 301;
one side of the ground bar locker box 300 forms a ground bar locker box door; a first opening hole 307/a second opening hole 308 is arranged between the top/bottom surface of the box body of the ground rod lock box and the box door of the ground rod lock box; the first opening 307 corresponds to the second opening 308, and the ground bar lock box is sleeved outside the ground bar through the first opening 307 and the second opening 308.
The second card reading module 302 is configured to identify an access card of a worker, and read access card information of the access card.
The second electromagnetic lock 304 is used for locking the door of the ground rod lock box.
The second control module 301 is configured to send the access card information read by the second card reading module 302 to the PLC control module 600. The PLC control module 600 compares the received access card information with the stored access card information, and sends a command signal for opening/closing the ground bar lock box to the second control module 301 according to the comparison result, the received power cutoff/transmission mode start command, and the built-in power cutoff/transmission program. The second control module 301 drives the second electromagnetic lock 304 to unlock/lock according to the command signal for opening/closing the ground rod lock box 300 sent by the PLC control module 600.
The photoelectric switch 303 is arranged in the grounding rod lock box body and used for identifying whether the grounding rod is placed in the grounding rod lock box body or not, and generating and sending an in-place/out-of-place signal of the grounding rod to the PLC control module 600 according to an identification result.
The ground bar lockset box power loss protection device 306 is used to close the door of the ground bar lockset box 300 in the event of a power failure of the second control module 301.
The second inching limit travel switch 305 is used for detecting the opening/closing state of the door of the ground rod lock box and sending a signal of the opening/closing state of the ground rod lock box to the PLC control module 600 through the second control module 301 according to the detection result.
The ground wire lockset box 400 is used for placing a ground wire, an operating head and a ground clip.
As shown in fig. 6 and 6A, the ground line lock box 400 includes: the third control module is in signal connection with the PLC control module 600, and the third card reading module 402, the third electromagnetic lock 403, the third inching limit travel switch 404 and the ground wire lock box power-down protection device 405 are in signal connection with the third control module 401;
the third card reading module 402 is configured to identify an access card of a worker, and read access card information of the access card;
the third electromagnetic lock 403 is used for locking the door of the ground wire lock box 400;
the third control module 401 is configured to send the access card information read by the third card reading module 402 to the PLC control module 600. The PLC control module 600 compares the received access card information with the stored access card information, and sends a command signal for opening/closing the ground line lock box to the third control module 401 according to the comparison result, the received power cutoff/transmission mode start command, and the built-in power cutoff/transmission program. The third control module 401 drives the third electromagnetic lock 403 to unlock/lock according to the command signal sent by the PLC control module 600 to open/close the ground wire lock box 400.
The ground wire lock box power-down protection device 405 is used for closing the box door of the ground wire lock box 400 under the condition that the third control module 401 is powered off;
the third inching limit travel switch 404 is configured to detect an open/close state of the door of the ground wire lock box, and send a signal indicating the open/close state of the ground wire lock box to the PLC control module 600 through the third control module 401 according to a detection result.
The roof service platform is shown in figure 7. The roof service platform lock control module 500 is used for opening/closing a fourth electromagnetic lock 501 on a roof service platform door; a fourth inching limit travel switch (not shown in the figure) is also arranged on the car roof access platform door.
As shown in fig. 8, the roof service platform latch control module 500 includes: a fourth control module (not shown) and a fourth card reading module (not shown); the fourth control module is in signal connection with the PLC control module 600, the fourth card reading module, the fourth inching limit travel switch and the fourth electromagnetic lock 501.
The fourth card reading module is used for identifying an access card of a worker and reading access card information of the access card;
the fourth control module is configured to send the entrance guard card information read by the fourth card reading module to the PLC control module 600. The PLC control module 600 compares the received access card information with the stored access card information, and sends a command signal for opening/closing the roof inspection platform door to the fourth control module according to the comparison result, the received power cutoff/transmission mode start command, and the built-in power cutoff/transmission program. The fourth control module drives the fourth electromagnetic lock 501 to unlock/lock according to the command signal for opening/closing the roof access platform door sent by the PLC control module 600;
the fourth inching limit travel switch is used for detecting the opening/closing state of the roof access platform door and sending a roof access platform door opening/closing state signal to the PLC control module 600 through the fourth control module according to the detection result. The communication module 900 is used for realizing signal transmission between the PLC control module 600 and the first to fourth control modules, and between the PLC control module 600 and the upper computer 800.
The invention also provides an intelligent safe power cut/transmission method, which is realized by adopting the intelligent safe power cut/transmission system, and as shown in fig. 9, the method comprises the following steps:
s1, verifying the operation authority of the worker by the upper computer 800, and if the operation authority passes the verification, writing the station track number to be disconnected/powered into the access card of the worker by the upper computer 800; the PLC control module 600 receives and stores a power-off mode starting instruction corresponding to a power-off program and access card information of a worker, which are sent by the upper computer 800;
s2, the staff swipes an entrance guard card to the knife gate mechanism box control module 200, the knife gate mechanism box control module 200 sends the identified entrance guard card information to the PLC control module 600, and the PLC control module 600 compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module 600 sends a command signal to open the knife mechanism box, and the process proceeds to S3; otherwise, go to S6;
s3, opening the door of the knife switch mechanism box, driving the rotating rod to rotate by a worker, and closing the door of the knife switch mechanism box after completing the power-off operation of the touch network cable; if the PLC control module 600 receives the power-off in-place signal within the set time, the process proceeds to step S4; otherwise, go to S6;
s4, the staff checks electricity for the net touching wire of the station road to be powered off, if the net touching wire is not electrified, the staff swipes an entrance guard card to the grounding rod lockset box, the grounding rod lockset box sends the identified entrance guard card information to the PLC control module 600, and the PLC control module 600 compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module 600 sends a command signal for opening the grounding rod lock box, and the worker takes out the grounding rod and enters S5; otherwise, go to S6;
s5, a worker swipes an entrance guard card to the ground wire lock box, the ground wire lock box sends the identified entrance guard card information to the PLC control module 600, and the PLC control module 600 compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module 600 sends a signal instructing to open the ground wire lock box; the working personnel take out the grounding wire, the grounding clamp and the operating head to assemble a grounding rod, the grounding clamp is arranged on a rail of the station track to be powered off, the operating head is hung on the net touching wire through the grounding rod, and the power-off operation of the station track net touching wire is completed; the worker swipes the card to enter the car roof maintenance platform;
and S6, the PLC control module 600 sends an alarm signal to the upper computer 800 and then stops working.
After the worker completes the task of repairing the roof equipment, as shown in fig. 10, the following operations are performed:
s7, after the worker confirms that the roof overhaul platform is unmanned, sending a power transmission mode starting instruction corresponding to the power transmission program to the PLC control module 600 through the upper computer 800;
s8, removing the grounding rod by a worker, and swiping an entrance guard card to the grounding wire lockset box; the PLC control module 600 compares the received and stored access control card information; if the comparison result is consistent, the grounding wire lock box is opened, and a worker puts the grounding wire, the grounding clamp and the operating head into the ground wire lock box and closes the grounding wire lock box; if the comparison result is not consistent, entering S12;
s9, a worker swipes an entrance guard card to the ground rod lock box; the PLC control module 600 compares the received and stored access control card information; if the comparison result is consistent, the grounding rod lock box is opened, and the worker puts in the grounding rod and closes the grounding rod lock box; if the comparison result is not consistent, entering S12;
s10, a worker swipes an access card to the knife switch mechanism box control module 200, and the PLC control module 600 compares the received access card information with the stored access card information; if the comparison result is consistent, the box door of the knife switch mechanism is opened, and the step S11 is entered; if the comparison result is not consistent, entering S12;
s11, the staff drives the rotating rod to rotate, and the door of the knife switch mechanism box is closed after the power transmission operation of the net touching wire is completed; if the PLC control module 600 receives a power transmission in-place signal within a set time, completing power transmission operation of the network cable contacted by the station track;
and S12, the PLC control module 600 sends an alarm signal to the upper computer 800 and then stops working.
In an embodiment of the present invention, the intelligent safety power cut/transmission system further includes a plurality of image acquisition modules 700, wherein a part of the image acquisition modules 700 are configured to acquire touch wire image information; another partial image acquisition module 700 is used for acquiring the image information of the roof service platform;
a trained first neural network model and a trained second neural network model are arranged in the upper computer 800; the first neural network is used for judging whether the grounding rod is hung on the touch screen line according to the image information of the touch screen line, so that the grounding rod is effectively prevented from being forgotten to be hung during power-off operation; the second neural network model is used for judging whether people are on the overhaul platform or not according to the image information of the roof overhaul platform, and therefore casualties caused by power transmission operation when people are left on the roof overhaul platform are effectively prevented.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides an intelligent safe power cut/transmission system for subway train roof equipment overhauls, rotates around self center pin through the bull stick that controls touch net twine isolator and realizes touch net twine power cut/transmission which characterized in that, the system contains: the device comprises a PLC control module, a switch blade mechanism box control module, a grounding rod lock box and a grounding wire lock box;
the PLC control module comprises a power cut/transmission program corresponding to a power cut/transmission operation process of a touch network cable;
a switch blade control mechanism for driving the rotating rod to rotate is arranged in the switch blade mechanism box;
the grounding rod lock box is used for placing a grounding rod; the grounding rod lockset box also identifies whether a grounding rod is placed in the grounding rod lockset box, and generates and sends a grounding rod in-place/out-of-place signal to the PLC control module according to the identification result;
the grounding wire lockset box is used for placing a grounding wire;
the switch blade mechanism box control module, the grounding rod lock box and the grounding wire lock box also respectively identify an access card of a worker and send read access card information to the PLC control module; and the PLC control module opens/closes the switch blade mechanism box, the grounding rod lock box and the grounding wire lock box according to the received access control card information and the generation corresponding to the power cut/transmission program.
2. The intelligent safety power cut/transmission system according to claim 1, further comprising an upper computer in communication connection with the PLC control module; the upper computer is used for verifying the operation authority of a worker and sending an off/power transmission mode starting instruction corresponding to the off/power transmission program to the PLC control module; the upper computer also sends a station track number to be disconnected/powered and an ID number of a worker performing disconnection/powered operation to the PLC control module; the worker ID number is used for uniquely identifying worker identity information; the entrance guard card information comprises a staff ID number and the stock track number.
3. The intelligent safety power cut/delivery system of claim 1, wherein the knife mechanism box control module comprises: the device comprises a first card reading module, a first control module, a closing indicator lamp and an opening indicator lamp; the knife switch mechanism box also comprises a first control module, wherein the first control module is in signal connection with the knife switch mechanism box: the power failure protection device comprises a first electromagnetic lock, a knife switch mechanism box power failure protection device and a first micro-motion limit travel switch;
the first card reading module is used for identifying an access card of a worker and reading access card information of the access card;
the first electromagnetic lock is used for locking a box door of the knife switch mechanism box;
the first control module is used for sending the entrance guard card information read by the first card reading module to the PLC control module and receiving an instruction signal for opening/closing the knife switch mechanism box sent by the PLC control module to drive the first electromagnetic lock to be unlocked/locked;
the switching-off and switching-on indicating lamp is used for indicating the switching-off and switching-on states of the network cable knife;
the power-down protection device of the switch blade mechanism box is used for closing a box door of the switch blade mechanism box under the condition that the first control module is powered off;
the first inching limit travel switch is used for detecting the opening/closing state of the door of the knife switch mechanism box and sending a knife switch mechanism box opening/closing state signal to the PLC control module through the first control module according to a detection result.
4. The intelligent safety power cut/delivery system of claim 1, wherein the ground rod lock box comprises: the device comprises a hollow ground rod lock box body, a second control module, a second card reading module, a photoelectric switch, a second electromagnetic lock, a second micro limit travel switch and a ground rod lock box power-off protection device, wherein the second card reading module, the photoelectric switch, the second electromagnetic lock, the second micro limit travel switch and the ground rod lock box power-off protection device are in signal connection with the second control module;
one side surface of the grounding rod lock box forms a grounding rod lock box door; a first opening/a second opening is formed between the top/bottom surface of the box body of the ground rod lock box and the box door of the ground rod lock box; the first opening corresponds to the second opening in position, and the grounding rod lock box is sleeved outside the grounding rod through the first opening and the second opening;
the second card reading module is used for identifying the access card of the worker and reading the access card information of the access card;
the second electromagnetic lock is used for locking a box door of the ground rod lock box;
the second control module is used for sending the entrance guard card information read by the second card reading module to the PLC control module and driving the second electromagnetic lock to be unlocked/locked according to the instruction signal sent by the PLC control module for opening/closing the ground rod lock box;
the photoelectric switch is arranged in the grounding rod lock box body and used for identifying whether the grounding rod is placed in the grounding rod lock box body or not, and generating and sending a grounding rod in-place/out-of-place signal to the PLC control module according to an identification result;
the ground rod lock box power-down protection device is used for closing a box door of the ground rod lock box under the condition that the second control module is powered off;
the second micro limit travel switch is used for detecting the opening/closing state of the door of the ground rod lock box and sending a signal of the opening/closing state of the ground rod lock box to the PLC control module through the second control module according to a detection result.
5. The intelligent safety power cut/delivery system of claim 1, wherein the ground wire lock box comprises: the third control module is in signal connection with the PLC control module, and the third card reading module, the third electromagnetic lock, the third inching limit travel switch and the ground wire lock box power-down protection device are in signal connection with the third control module;
the third card reading module is used for identifying the access card of a worker and reading the access card information of the access card;
the third electromagnetic lock is used for locking a box door of the grounding wire lockset box;
the third control module is used for sending the entrance guard card information read by the third card reading module to the PLC control module and driving the third electromagnetic lock to unlock/lock according to the instruction signal sent by the PLC control module for opening/closing the ground wire lockset box;
the ground wire lockset box power-down protection device is used for closing a box door of the ground wire lockset box under the condition that the third control module is powered off;
the third inching limit travel switch is used for detecting the opening/closing state of the door of the ground wire lock box and sending a signal of the opening/closing state of the ground wire lock box to the PLC control module through the third control module according to the detection result;
the grounding wire lockset box is also used for placing an operating head and a grounding clip of the grounding rod.
6. The intelligent safety power-off/power-on system according to claim 1, wherein a power-on in-place limit switch and a power-off in-place limit switch in signal connection with the first control module are arranged at the top of the knife switch mechanism box; a stop block is fixedly arranged at the bottom of the rotating rod and is positioned between the power-on and power-off in-place limit switches; by rotating the rotating rod, the stop block triggers the power transmission in-place limit switch and the power failure in-place limit switch to generate corresponding power transmission in-place signals and power failure in-place signals; and sending the power transmission in-place signal and the power failure in-place signal to the PLC control module through the first control module.
7. The intelligent safety power cut/delivery system of claim 1, further comprising a roof access platform lock control module for opening/closing a fourth electromagnetic lock on a roof access platform door; a fourth inching limit travel switch is also arranged on the car roof access platform door;
roof overhauls platform tool to lock control module contains: the fourth control module and the fourth card reading module; the fourth control module is in signal connection with the PLC control module, the fourth card reading module, the fourth inching limit travel switch and the fourth electromagnetic lock;
the fourth card reading module is used for identifying an access card of a worker and reading access card information of the access card;
the fourth control module is used for sending the entrance guard card information read by the fourth card reading module to the PLC control module and driving the fourth electromagnetic lock to be unlocked/locked according to the instruction signal sent by the PLC control module for opening/closing the car roof access platform door;
and the fourth micro limit travel switch is used for detecting the opening/closing state of the roof access platform door and sending a roof access platform door opening/closing state signal to the PLC control module through the fourth control module according to the detection result.
8. The intelligent safety power cut/transmission system according to claim 1, further comprising a communication module, wherein the communication module is used for realizing signal transmission between the PLC control module and the first to fourth control modules.
9. An intelligent safety power cut/transmission method implemented by the intelligent safety power cut/transmission system according to any one of claims 1 to 8, comprising the steps of:
s1, verifying the operation authority of the worker by the upper computer, and writing the station track number to be disconnected/powered into the access card of the worker by the upper computer if the verification is passed; the PLC control module receives and stores a power-off mode starting instruction corresponding to a power-off program and access card information of the worker, which are sent by the upper computer;
s2, the staff swipes an entrance guard card to the knife switch mechanism box control module, the knife switch mechanism box control module sends the identified entrance guard card information to the PLC control module, and the PLC control module compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module sends a command signal for opening the knife switch mechanism box, and the step enters S3; otherwise, go to S6;
s3, opening the door of the knife switch mechanism box, driving the rotating rod to rotate by a worker, and closing the door of the knife switch mechanism box after completing the power-off operation of the touch network cable; if the PLC control module receives the power-off in-place signal within the set time, the step S4 is carried out; otherwise, go to S6;
s4, checking electricity of a touch network wire of a station road to be powered off by a worker, swiping an entrance guard card to a ground rod lock box by the worker if the touch network wire is not electrified, sending the identified entrance guard card information to a PLC control module by the ground rod lock box, and comparing the received entrance guard card information with the stored entrance guard card information by the PLC control module; if the comparison result is consistent, the PLC control module sends a command signal for opening the grounding rod lock box, and the worker takes out the grounding rod and enters S5; otherwise, go to S6;
s5, a worker swipes an entrance guard card to the ground wire lock box, the ground wire lock box sends the identified entrance guard card information to the PLC control module, and the PLC control module compares the received entrance guard card information with the stored entrance guard card information; if the comparison result is consistent, the PLC control module sends a command signal for opening the grounding wire lockset box; the method comprises the following steps that a worker assembles a grounding rod, installs a grounding clamp on a rail of a station track to be powered off, and hangs an operating head on a net touching line through a grounding rod to complete the power-off operation of the station track net touching line;
and S6, the PLC control module sends an alarm signal to the upper computer and then stops working.
10. The intelligent safety power on/off method according to claim 9, further comprising the steps of:
s7, after the worker confirms that the roof overhaul platform is unmanned, sending a power transmission mode starting instruction corresponding to the power transmission program to the PLC control module through the upper computer;
s8, removing the grounding rod by a worker, and swiping an entrance guard card to the grounding wire lockset box; the PLC control module compares the received and stored access control card information; if the comparison result is consistent, the grounding wire lock box is opened, and a worker puts the grounding wire, the grounding clamp and the operating head into the ground wire lock box and closes the grounding wire lock box; if the comparison result is not consistent, entering S12;
s9, a worker swipes an entrance guard card to the ground rod lock box; the PLC control module compares the received and stored access control card information; if the comparison result is consistent, the grounding rod lock box is opened, and the worker puts in the grounding rod and closes the grounding rod lock box; if the comparison result is not consistent, entering S12;
s10, a worker swipes an access card to the control module of the knife switch mechanism box, and the PLC control module compares the received access card information with the stored access card information; if the comparison result is consistent, the box door of the knife switch mechanism is opened, and the step S11 is entered; if the comparison result is not consistent, entering S12;
s11, the staff drives the rotating rod to rotate, and the door of the knife switch mechanism box is closed after the power transmission operation of the net touching wire is completed; if the PLC control module receives the power transmission in-place signal within the set time, the power transmission operation of the access contact network cable is completed, otherwise, the step S12 is executed;
and S12, the PLC control module sends an alarm signal to the upper computer and then stops working.
CN202110104227.0A 2021-01-26 2021-01-26 Intelligent safety power cut-off/transmission system and method Pending CN112952770A (en)

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