CN110412962B - Promotion centralized control system that accuse is many - Google Patents
Promotion centralized control system that accuse is manyDownload PDFInfo
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- CN110412962B CN110412962BCN201910811666.8ACN201910811666ACN110412962BCN 110412962 BCN110412962 BCN 110412962BCN 201910811666 ACN201910811666 ACN 201910811666ACN 110412962 BCN110412962 BCN 110412962B
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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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4183—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by data acquisition, e.g. workpiece identification
- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41835—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by programme execution
- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4184—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by fault tolerance, reliability of production system
- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
- G05B19/41855—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication by local area network [LAN], network structure
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Selective Calling Equipment (AREA)
- Elevator Control (AREA)
Abstract
Description
Technical Field
The invention relates to a centralized control system of a mine hoisting system.
Background
The hoist and its electric control system are major safety equipment of the mine, and the operation condition not only directly affects the production efficiency of the mine, but also affects the production safety of the mine.
A plurality of hoister devices are usually arranged on the site, and the existing hoister is controlled in a manual driving control and site monitoring mode on the manual site. Along with the continuous enlargement of production scale, the production task is continuously aggravated, the shortage of elevator operators is serious, and the labor intensity is high. Meanwhile, the current ore extraction amount is in a scattered statistics mode, production reports are not collected timely and accurately every day, and barriers are caused to production operation and intelligent decision making of mines.
Disclosure of Invention
The invention provides a multi-control lifting centralized control system, which aims to: (1) the remote centralized control of a plurality of field hoists is realized, and the labor intensity and labor cost of operators are reduced; (2) and (4) opening a data isolated island, and providing timely and accurate data of the hoister for production decision.
The technical scheme of the invention is as follows:
a lifting centralized control system with multiple control functions is used for controlling a plurality of lifting machines on site, local PLC (programmable logic controllers) which are in one-to-one correspondence with the lifting machines are further arranged on the site, and the local PLC is used for controlling the actions of the lifting machines and acquiring state data of the lifting machines. The system also comprises a centralized control upper computer arranged in a centralized control center and a plurality of centralized control consoles in one-to-one correspondence with the hoists, wherein a centralized control PLC and a control handle connected with the centralized control PLC are arranged on the centralized control consoles, and the centralized control upper computer is in communication connection with the centralized control PLC; the centralized control upper computer is connected with a display;
the centralized control PLC is in communication connection with the corresponding local PLC, the state data of the hoister in the local PLC is synchronized to the centralized control PLC, and the centralized control upper computer acquires the state information of the hoister through the centralized control PLC and displays the state information on the display;
the centralized control PLC sends the remote control instruction and the remote control data to the local PLC, and the local PLC controls the action of the hoister according to the remote control instruction and the remote control data to realize remote centralized control.
As a further improvement of the system: the site is also provided with a local control platform corresponding to the local PLC, and the local control platform is in communication connection with the corresponding local PLC;
and an operator sends a control command and control data to the local PLC through the local control platform, or sends the control command and control data to the local PLC through a control handle of the centralized control platform and the centralized control PLC, so that manual mode control of the elevator is realized.
As a further improvement of the system: the local PLC is provided with an automatic operation program for operating in an automatic mode and an automatic parameter pool, and the automatic parameter pool is used for storing automatic operation parameters respectively set by the centralized control end and the local end; the centralized control center is provided with a centralized control local switch and a centralized control steady-state switch which correspond to the centralized control PLC, the centralized control local switch is connected with a first input end of the centralized control steady-state switch, and the centralized control PLC is respectively connected with a second input end and an output end of the centralized control steady-state switch;
the local PLC is respectively connected with a second input end and an output end of the local steady-state switch;
under the automatic mode, the switching of the automatic control right is realized through a centralized control to local switch and a local centralized control to local switch, wherein the control right refers to: when the automatic operation program operates, the automatic operation parameters set by the centralized control end or the local end are selected to be called, and the control right belongs to the centralized control end or the local end;
when the control right is transferred from the centralized control end to the local end: controlling a centralized control-to-local switch to enable a first input end of a centralized control steady-state switch to obtain a signal, triggering a following program module of a centralized control PLC (programmable logic controller) to be called by an output end signal of the centralized control steady-state switch, sending a control right switching request to a local PLC by the following program module, entering a switching intermediate state after the local PLC receives the switching request, and simultaneously starting a state detection module to detect whether the state of the elevator meets a switching condition or not; in the intermediate state of switching, the local PLC suspends the operation after the current program segment is executed; when the state detection module judges that the switching condition is met, sending reply information to the centralized control PLC, enabling the centralized control PLC to send a signal to a second input end of the centralized control stable switch, enabling the signal at the output end of the centralized control stable switch to change, and sending a state switching success signal to the centralized control PLC, and enabling the centralized control PLC and the local PLC to synchronously update controller attribution information to complete control right switching from the centralized control end to the local end; after switching, the automatic operation program selects and calls the automatic operation parameters set by the local terminal;
when the control right is transferred from the local end to the centralized control end: controlling the local transfer centralized control switch to enable a first input end of the local steady-state switch to obtain a signal, triggering a following program module of the local PLC by an output end signal of the local steady-state switch to be called, enabling the local PLC to directly enter a switching intermediate state, and simultaneously starting a state detection module to detect whether the state of the elevator meets a switching condition or not; in the intermediate state of switching, the local PLC suspends the operation after the current program segment is executed; when the state detection module judges that the switching condition is met, a signal is sent to a second input end of the local steady-state switch, a signal at an output end of the local steady-state switch changes, and a state switching success signal is sent to the local PLC, the local PLC and the centralized control PLC synchronously update controller attribution information, and control right switching from the local end to the centralized control end is completed; and after switching, the automatic operation program selects and calls the automatic operation parameters set by the centralized control end.
As a further improvement of the system: the switching conditions include: the current program segment of the automatic operation program is executed completely, and one end waiting to receive the control right sends a standby signal through a manual confirmation switch.
As a further improvement of the system: the local PLC and the centralized control PLC are both provided with network detection modules for detecting whether the communication between the local PLC and the centralized control PLC is normal or not;
when the communication is abnormal:
(A) if the elevator runs in an automatic mode, the control right directly belongs to an on-site end, an on-site PLC (programmable logic controller) controls a site to send an alarm prompt, and the elevator locks self control after the current lifting task is finished;
(B) if the elevator runs in a manual mode, the control right directly belongs to the local end, the local PLC controls the field to send out an alarm prompt, and the elevator runs at the preset emergency safe speed until the current lifting task is finished and then locks the elevator to control.
As a further improvement of the system: local switches corresponding to the hoists are arranged on site, and the local PLCs are connected with the corresponding local switches respectively;
the centralized control center is provided with a centralized control switch, and each centralized control PLC and the centralized control upper computer are respectively connected with the centralized control switch so as to realize communication between the centralized control PLC and the centralized control upper computer;
the centralized control switch is connected with the local switch through an optical fiber communication ring network so as to realize the communication connection between the centralized control PLC and the local PLC.
Compared with the prior art, the invention has the following positive effects: (1) by arranging the centralized control center, the invention realizes the remote centralized control of the hoister, reduces the quantity demand of operators and reduces the labor intensity and the labor cost; (2) the centralized control PLC and the local PLC share the state data of the hoist in a data packet mode, and the centralized control upper computer can gather and count the data of the site in real time, so that a data isolated island is opened, and timely and accurate data of the hoist are provided for production decisions; (3) in an automatic mode, the local end and the centralized control end can switch the ownership of the control right to the other side through the change-over switch, and when the control right is switched, the following program module is triggered by the steady-state switch to send out a confirmation signal, so that the undisturbed switching is realized, and the output signal of the motor controller is ensured not to generate sudden change, so that interference and unsafe factors are not brought to a control system by the switching; (4) the system is also provided with a network fault coping mechanism, and different coping measures are taken according to the operation mode to eliminate potential safety hazards.
Drawings
FIG. 1 is a schematic diagram of the present system.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
referring to fig. 1, a lifting centralized control system with one controller and multiple controllers is used for controlling multiple lifting machines on site.
The local PLC302, the local operation platform, the touch screen and the on-site upper computer are respectively connected with the correspondinglocal switch 301. The local operation table, the touch screen and the like are used for setting parameters, and the on-site upper computer is used for displaying state information.
The switch is provided with an electric port and an optical port, and realizes the mutual communication and the network communication of connected equipment. The local PLC302 also controls substations such as a motor controller 305 (a converter, a frequency converter) and the like in a Profibus-DP communication mode, and communicates with each unloading station, loading station, each middle section box and the like through GENIUS to control the action of the elevator and acquire relevant state data of the elevator.
The system further comprises a centralized controlupper computer 102, acentralized control switch 101 and a plurality of centralized control operation platforms, wherein the centralized controlupper computer 102, thecentralized control switch 101 and the centralized control operation platforms are arranged in the centralized control center and correspond to the elevators one by one, and a centralized control PLC104 and a control handle connected with the centralized control PLC104 are arranged on the centralized control operation platforms. A plurality of sets of control handles control the corresponding lifting machines respectively, the operation is independent, one set of control handles breaks down, and the operation of other control handles and the normal operation of other lifting systems are not influenced.
The centralized controlupper computer 102 and the centralized control PLC104 are connected to thecentralized control switch 101 to achieve communication. The centralized controlupper computer 102 is connected with adisplay 103.
Thecentralized control switch 101 is connected with thelocal switch 301 through the optical fibercommunication ring network 200 to realize the communication connection between the centralized control PLC104 and the correspondinglocal PLC 302. Ethernet communication subprograms are respectively integrated in the centralized control PLC104 and the local PLC302, data packets are received and sent in real time, and each PLC device is identified through an ip address in the communication process. The data packet contains state data of the hoisting machine, so that the information waiting for summary is synchronously transmitted to the centralized control center in real time, and the centralized controlupper computer 102 acquires the state information of the hoisting machine through thecentralized control switch 101 and the centralized control PLC104 and displays the state information on thedisplay 103. Thedisplay 103 may show any one or more elevator monitoring and control interfaces simultaneously. In the traditional scheme, the data can only be collected and summarized on site by workers, and the data is not timely and accurate. The invention synchronizes the state data of the hoist to the centralized control end in real time in a data packet sending mode by establishing network communication between the centralized control center and the local end, thereby getting through a data isolated island and providing timely and accurate hoist data for production decision.
The centralized PLC104 also converts the input/output values (I/O/AI/AO, etc.) of the centralized console to intermediate variables, which are sent as remote control data via packets to thelocal PLC 302. The centralized control PLC104 can also send remote control commands in a data packet mode, and the local PLC302 controls the action of the hoister according to the preset data definition and the content in the data packet. Some information data about elevator control are also stored in a variable mode, for example, the current working mode is manual mode or automatic mode, the current control right is attributed, and the writing data are synchronized in a data packet mode, and as long as the variable value in the data packet changes, the variable value of the receiving end PLC changes accordingly. In a word, the local PLC302 and the centralized control PLC104 implement real-time sharing of data and part of input and output values by means of data packets, thereby achieving the purpose of remote control.
The working modes of the elevator mainly comprise a manual mode and an automatic mode. The mode selection switching is performed by the local end or the centralized control end through the upper computer after the task of the hoister is finished, or the mode selection switching can be controlled by only one end.
Manual mode:
an operator sends a control command and control data to the local PLC302 through thelocal console 303, or sends the control command and control data to the local PLC302 through a control handle of the centralized control console and the centralized control PLC104, so that manual mode control of the elevator is realized. In the remote control, the control command and data are converted into intermediate variables, and the intermediate variables are transmitted to the local PLC302 through data packets, and are controlled by the local PLC302 according to the variable values.
In the manual mode, only when one end completes manual control, the other end can perform control, and in the process of one-end control, the control right is not allowed to be switched.
Automatic mode:
an automatic operation program for operating in an automatic mode and an automatic parameter pool are arranged in the local PLC302, and automatic operation parameters respectively set by a centralized control end and a local end are stored in the automatic parameter pool; the centralized control center is provided with a centralized controllocal switch 105 and a centralized control steady-state switch 106 corresponding to the centralized control PLC104, the centralized controllocal switch 105 is connected with a first input end of the centralized control steady-state switch 106, and the centralized control PLC104 is respectively connected with a second input end and an output end of the centralized control steady-state switch 106.
An in-situ transfer centralizedcontrol switch 307 and an in-situ steady-state switch 306 corresponding to the in-situ PLC302 are arranged on site, the in-situ transfer centralizedcontrol switch 307 is connected with a first input end of the in-situ steady-state switch 306, and the in-situ PLC302 is connected with a second input end and an output end of the in-situ steady-state switch 306 respectively.
In the automatic mode, the automatic control right is switched by the centralized control tolocal switch 105 and the local centralized control tolocal switch 307, and the control right is: and when the automatic operation program operates, the automatic operation parameters set by the centralized control end or the local end are selected to be called, and the control right belongs to the centralized control end or the local end.
When the control right is transferred from the centralized control end to the local end: controlling the centralized control-to-local switch 105 to enable a first input end of the centralized control steady-state switch 106 to obtain a signal, triggering a following program module of the centralized control PLC104 to be called by an output end signal of the centralized control steady-state switch 106, sending a control right switching request to the local PLC302 by the following program module, entering a switching intermediate state after the local PLC302 receives the switching request, and simultaneously starting a state detection module to detect whether the state of the elevator meets a switching condition; in the intermediate state of switching, the local PLC302 suspends operation after executing the current program segment; when the state detection module judges that the switching condition is met, sending reply information to the centralized control PLC104 to enable the centralized control PLC104 to send a signal to a second input end of the centralized control steady-state switch 106, enabling a signal at an output end of the centralized control steady-state switch 106 to change and sending a state switching success signal to the centralized control PLC104, synchronously updating controller attribution information by the centralized control PLC104 and the local PLC302, and finishing control right switching from a centralized control end to a local end; after switching, the automatic operation program selects and calls the automatic operation parameters set by the local terminal.
When the control right is transferred from the local end to the centralized control end: controlling the local transfercentralized control switch 307 to enable a first input end of the local steady-state switch 306 to obtain a signal, triggering a following program module of the local PLC302 by an output end signal of the local steady-state switch 306 to be called, enabling the local PLC302 to directly enter a switching intermediate state, and simultaneously starting a state detection module to detect whether the state of the elevator meets a switching condition; in the intermediate state of switching, the local PLC302 suspends operation after executing the current program segment; when the state detection module judges that the switching condition is met, a signal is sent to a second input end of the local steady-state switch 306, a signal at an output end of the local steady-state switch 306 changes, and a state switching success signal is sent to the local PLC302, the local PLC302 and the centralized control PLC104 synchronously update controller attribution information, and control right switching from the local end to the centralized control end is completed; and after switching, the automatic operation program selects and calls the automatic operation parameters set by the centralized control end.
The switching conditions include: the current section of the automatic running program is executed, and the end waiting to receive the control right sends a standby signal through a manual confirmation switch, and can also contain other conditions, such as whether the elevator reaches a designated safe area, whether the related equipment part is in a ready state, and the like.
Through the steady state switch and the following program module, the undisturbed switching is realized, and the output signal of themotor controller 305 is ensured not to be suddenly changed, so that the switching is prevented from bringing interference and unsafe factors to a control system.
The elevator also has special working modes such as maintenance, recovery and the like.
The local PLC302 and the centralized control PLC104 are both provided with network detection modules for detecting whether the communication between the local PLC and the centralized control PLC is normal. And respectively writing corresponding seamless control takeover programs at the centralized control end and the local end to process network interruption faults.
When the communication is abnormal:
(A) if the elevator runs in an automatic mode, the control right directly belongs to the local end, the local PLC302 controls the field to send out an alarm prompt, and the local PLC locks the self control after the current lifting task is finished; the elevator is completely controlled by the field local control system, and can be switched into the remote centralized control system to operate after the network is recovered to normal.
(B) If the hoister operates in a manual mode, the control right directly belongs to an on-site end, the on-site PLC302 controls the on-site to send out an alarm prompt, and the hoister operates at a preset emergency safe speed until the current hoisting task is finished and then locks self control; the elevator is completely controlled by the field local control system, and can be switched into the remote centralized control system to operate after the network is recovered to normal.
If the elevator operates in special modes such as maintenance and recovery, the measures for network interruption are as follows: when the centralized control end detects the network interruption, firstly, a communication interruption prompt is sent out, the control authority of the hoister is released at the same time, meanwhile, when the ground end detects the communication interruption, an emergency stop command of the hoister is sent out immediately, a take-over program is put into use, and an acousto-optic prompt is sent out at the field level at the same time. The centralized control end gives an alarm and locks the self control, and the elevator is completely controlled by a field local control system. And after the network is recovered to normal, the remote centralized control system can be switched to operate.
Claims (4)
1. The utility model provides a promotion centralized control system that one accuse is many for control a plurality of lifting machines on the scene, the scene still is equipped with the local PLC (302) of lifting machine one-to-one, local PLC (302) are used for controlling the lifting machine action and gather the state data of lifting machine, characterized in that: the elevator hoisting machine is characterized by further comprising a centralized control upper computer (102) arranged in a centralized control center and a plurality of centralized control consoles in one-to-one correspondence with the hoists, wherein a centralized control PLC (104) and a control handle connected with the centralized control PLC (104) are arranged on the centralized control consoles, and the centralized control upper computer (102) is in communication connection with the centralized control PLC (104); the centralized control upper computer (102) is connected with a display (103);
the centralized control PLC (104) is in communication connection with the corresponding local PLC (302), the state data of the hoist in the local PLC (302) is synchronized to the centralized control PLC (104), and the centralized control upper computer (102) acquires the state information of the hoist through the centralized control PLC (104) and displays the state information on the display (103);
the centralized control PLC (104) sends the remote control instruction and the remote control data to the local PLC (302), and the local PLC (302) controls the action of the hoister according to the remote control instruction and the remote control data to realize remote centralized control;
the site is also provided with a local control platform (303) corresponding to the local PLC (302), and the local control platform (303) is in communication connection with the corresponding local PLC (302);
an operator sends a control command and control data to the local PLC (302) through the local console (303), or sends the control command and control data to the local PLC (302) through a control handle of the centralized control console and the centralized control PLC (104), so that manual mode control of the elevator is realized;
an automatic operation program for operating in an automatic mode is arranged in the local PLC (302), and an automatic parameter pool is also arranged, wherein automatic operation parameters respectively set by the centralized control end and the local end are stored in the automatic parameter pool; the centralized control center is provided with a centralized control local switch (105) and a centralized control steady-state switch (106) which correspond to the centralized control PLC (104), the centralized control local switch (105) is connected with a first input end of the centralized control steady-state switch (106), and the centralized control PLC (104) is respectively connected with a second input end and an output end of the centralized control steady-state switch (106);
an on-site transfer centralized control switch (307) and an on-site steady-state switch (306) corresponding to the on-site PLC (302) are arranged on site, the on-site transfer centralized control switch (307) is connected with a first input end of the on-site steady-state switch (306), and the on-site PLC (302) is respectively connected with a second input end and an output end of the on-site steady-state switch (306);
in the automatic mode, the automatic control right is switched by a centralized control-to-local switch (105) and a local control-to-centralized switch (307), wherein the control right is as follows: when the automatic operation program operates, the automatic operation parameters set by the centralized control end or the local end are selected to be called, and the control right belongs to the centralized control end or the local end;
when the control right is transferred from the centralized control end to the local end: controlling a centralized control to local switch (105) to enable a first input end of a centralized control steady-state switch (106) to obtain a signal, triggering a following program module of a centralized control PLC (104) to be called by an output end signal of the centralized control steady-state switch (106), sending a control right switching request to a local PLC (302) by the following program module, entering a switching intermediate state after the local PLC (302) receives the switching request, and starting a state detection module to detect whether the state of the elevator meets a switching condition or not; in the intermediate state of switching, the local PLC (302) suspends the operation after the current program segment is executed; when the state detection module judges that the switching condition is met, reply information is sent to the centralized control PLC (104), so that the centralized control PLC (104) sends a signal to a second input end of the centralized control steady-state switch (106), the signal at the output end of the centralized control steady-state switch (106) changes, and a state switching success signal is sent to the centralized control PLC (104), the centralized control PLC (104) and the local PLC (302) synchronously update controller attribution information, and control right switching from the centralized control end to the local end is completed; after switching, the automatic operation program selects and calls the automatic operation parameters set by the local terminal;
when the control right is transferred from the local end to the centralized control end: controlling the local transfer control switch (307) to enable a first input end of the local steady-state switch (306) to obtain a signal, triggering a following program module of the local PLC (302) to be called by an output end signal of the local steady-state switch (306), enabling the local PLC (302) to directly enter a switching intermediate state, and simultaneously starting a state detection module to detect whether the state of the elevator meets a switching condition or not; in the intermediate state of switching, the local PLC (302) suspends the operation after the current program segment is executed; when the state detection module judges that the switching condition is met, a signal is sent to a second input end of the local steady-state switch (306), a signal at an output end of the local steady-state switch (306) changes, and a state switching success signal is sent to the local PLC (302), the local PLC (302) and the centralized control PLC (104) synchronously update controller attribution information, and control right switching from the local end to the centralized control end is completed; and after switching, the automatic operation program selects and calls the automatic operation parameters set by the centralized control end.
2. The lift-control centralized system of claim 1, wherein: the switching conditions include: the current program segment of the automatic operation program is executed completely, and one end waiting to receive the control right sends a standby signal through a manual confirmation switch.
3. The lift-control centralized system of claim 2, wherein: the local PLC (302) and the centralized control PLC (104) are both provided with network detection modules for detecting whether the communication between the local PLC and the centralized control PLC is normal or not;
when the communication is abnormal:
(A) if the elevator runs in an automatic mode, the control right directly belongs to the local end, the local PLC (302) controls the field to send out an alarm prompt, and the elevator locks the control of the elevator after the current lifting task is finished;
(B) if the elevator runs in a manual mode, the control right directly belongs to the local end, the local PLC (302) controls the field to send out an alarm prompt, and the elevator runs at the preset emergency safe speed until the current lifting task is finished, and then self control is blocked.
4. A multi-control lifting centralized control system as claimed in any one of claims 1 to 3, wherein: local switches (301) corresponding to the elevators are arranged on site, and each local PLC (302) is connected with the corresponding local switch (301);
the centralized control center is provided with a centralized control switch (101), and each centralized control PLC (104) and the centralized control upper computer (102) are respectively connected with the centralized control switch (101) so as to realize the communication between the centralized control PLC (104) and the centralized control upper computer (102);
the centralized control switch (101) is connected with the local switch (301) through an optical fiber communication ring network (200) so as to realize the communication connection between the centralized control PLC (104) and the local PLC (302).
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| CN114640820A (en)* | 2020-12-16 | 2022-06-17 | 中国黄金集团内蒙古矿业有限公司 | Remote control technology of open-air hydraulic breaker based on ETHERNET |
| CN113253681A (en)* | 2021-02-05 | 2021-08-13 | 武钢资源集团大冶铁矿有限公司 | Chute breaking system and remote control system of centralized control system |
| CN112947042A (en)* | 2021-03-10 | 2021-06-11 | 洛阳源创电气有限公司 | Centralized monitoring system for mine hoist cluster |
| CN115032960A (en)* | 2022-08-12 | 2022-09-09 | 常州市聚凝电气自动化设备有限公司 | Industrial Ethernet and control bus based field device control system and method |
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