CN101976076A - MCU-based mining automatic control system - Google Patents

MCU-based mining automatic control system Download PDF

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Publication number
CN101976076A
CN101976076A CN2010105661534A CN201010566153A CN101976076A CN 101976076 A CN101976076 A CN 101976076A CN 2010105661534 A CN2010105661534 A CN 2010105661534A CN 201010566153 A CN201010566153 A CN 201010566153A CN 101976076 A CN101976076 A CN 101976076A
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China
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chip microcomputer
msp430 single
center processor
master controller
actuator
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CN101976076B (en
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全太锋
白小伟
叶立胜
章建
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Chongqing Mas Sci & Tech Co Ltd
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Chongqing Mas Sci & Tech Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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Abstract

The invention provides an MCU-based mining automatic control system, comprising a master controller and a plurality of executors; wherein a plurality of executors are respectively connected with the master controller; the master controller is internally provided with a central processing unit adopting FPGA chip, the central processing unit is connected with a touch liquid crystal display, a memory and a plurality of small liquid crystal displays; the executor takes an MSP430 singlechip as processing core, the MSP430 singlechip is connected with the central processing unit by virtue of an RS485 bus, the output terminal of the MSP430 singlechip is connected with a plurality of driving circuit modules in parallel, each driving circuit module is connected with a relay used for connecting a terminal mechanism; and the central processing unit, the MSP430 singlechip, the touch liquid crystal display and the small liquid crystal displays are all powered by an intrinsically safe power supply. The control system of the invention has the advantages that wiring is simple in site operation, control reliability is high, operation is flexible, and safety in use is high.

Description

Mining automatic control system based on MCU
Technical field
The present invention relates to the colliery and draw out methane and be used to control the automatic control system of butterfly valve and pump operation in the pumping plant, this system can concentrate a plurality of reference mark in the mine control automatically, belong to technical field of automatic control.
 
Background technology
Control to butterfly valve and pump in the mine extraction pumping plant all is that utilization PLC scheme solves basically in the industry of colliery at present, but owing to need in the mine hazardous environment that has damp is carried out multiple spot control, therefore adopt the PLC scheme to have very big defective, be mainly reflected in the following aspects:
1, all topworkies and master controller are all concentrated and are put together in the PLC scheme, its structure is as a whole and be difficult to change in when design, when this structure applications realizes the collection control in the many environment of control point poles such as colliery extraction pump house, each regional reference mark all must be laid control and gather cable to the PLC position, therefore it is extremely many to have caused PLC to go up the cable that connects, in case break down in certain reference mark, interrogate and examine very difficulty of fault, and will increase the reference mark to PLC the time, construction also bothers very much, and also must lay corresponding cable to PLC primary controller installation place simultaneously when increasing the reference mark, this difficulty of construction for the mine of having planned is quite big.
2, owing to the program in the PLC is implanted when designing and producing in advance, logic control relation that it is corresponding and logic control condition are just determined when implant procedure, therefore if logic control relation or the logic control condition that will change in the PLC must be carried out reprogramming by the PLC professional, this mode is very dumb, brought very big difficulty to ordinary person's operation, made that the versatility of system is relatively poor.
3, present PLC control output all need increase special pilot relay usually, each terminal mechanism all needs to dispose separately the corresponding relays cabinet when mounted, not only bothered when this makes wiring but also increased workload, line fault also takes place easily, simultaneously since in PLC integrated master controller and topworks, the connection cable of each device is staggered in length and breadth, and is difficult to accomplish essential safety, has the potential safety hazard that sets off an explosion during use.
 
Summary of the invention
At above-mentioned deficiency of the prior art, fundamental purpose of the present invention is to solve and is used to control in the gas pumping plant automatic control system of butterfly valve and pump operation in the industry of present colliery to gather cable too many, the problem that occurs line fault easily and be difficult to interrogate and examine, a kind of wiring is simple when constructing at the scene, control is reliable and provide, and flexible operation, mining automatic control system safe in utilization.
Technical scheme of the present invention: the mining automatic control system based on MCU is characterized in that comprise master controller and actuator, described actuator has several and is connected with master controller respectively; In master controller, be provided with the center processor that adopts fpga chip, on described center processor, be connected with touch LCD screen, storer and several little LCDs; Described actuator serves as to handle core with the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer is connected with center processor by the RS485 bus, output terminal at the MSP430 single-chip microcomputer is parallel with several drive circuit modules and several SOT state of termination Acquisition Circuit modules, all is connected with a relay that is used for connecting terminal mechanism on each drive circuit module; Described center processor, MSP430 single-chip microcomputer, touch LCD screen and little LCDs are powered by intrinsic safety electric source; When described master controller is worked, import controlled variable by the touch LCD screen to center processor, center processor is according to the MSP430 single-chip microcomputer transmitting control commands of described controlled variable in actuator, and the MSP430 single-chip microcomputer is controlled corresponding drive circuit module and relay and driven the terminal mechanism action according to described control command; After described terminal mechanism carries out action, the status signal of SOT state of termination Acquisition Circuit module acquisition terminal mechanism also feeds back to the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer sends to center processor in the master controller with described status signal, and center processor shows by little LCDs and the output of touch LCD screen.
With respect to prior art, the present invention has following beneficial effect:
1, automatic control system of the present invention has expanded to the controlled device scene with acquisition control module (being actuator), between acquisition control module and master controller, all adopt the RS485 bus transfer, thereby it is various to have solved PLC master controller place cable, the construction trouble, fault is got rid of the problem of difficulty, wiring is simpler during site operation like this, control more flexible, reliably, saved cable, also reached the purpose that reduces cost, also solve PLC control simultaneously and exported the problem that needs to increase relay cabinet, simplify more by adopting the unit integrated version equipment that makes, efficiently, line fault significantly reduces, and is particularly suitable for installing in the narrower and small environment in space, down-hole.
2, more flexible during operation: as in master controller, to have adopted the fpga chip that to write and to revise control program flexibly as center processor (MCU), and in actuator, adopt the MSP430 single-chip microcomputer to come to carry out data transfer with center processor, make that not only the processing speed of system is faster, the more important thing is the logic control conditional sum logic control relation that to change control terminal mechanism by center processor at any time, and need not to rely on the professional, general staff through simple training all can make amendment or resets the control model of system, thereby solved the problem of on-the-spot logic control relation of PLC and logic control condition change difficulty, the staff can directly import various parameter values by the touch LCD screen, and it is flexible to operation, safe and reliable.
3, safety in utilization improves greatly: automatic control system of the present invention has adopted intrinsic safety electric source to be each power devices, thereby make each equipment can avoid in the course of the work because blast or the fire failure that circuit spark etc. cause, and because master controller is to be placed on different device contexts respectively with actuator, do not need adaptive polarizing memory voltage time constant especially yet, the mutual interference of each equipment in operational process is very little, security is greatly improved, therefore can be applicable to exist the hazardous area of gas, removed potential safety hazard.
4, automatic control system of the present invention both can be provided with by logic control relation and the logic control condition of central station to system, also can directly carry out the modification and the setting of program by screen of the touch LCD on the master controller or manual control handle, the staff both can be in the down-hole by operation main controller controls system works like this, also can be on the ground by central station observation and correction data, simultaneously can also be as standby control when touch LCD screen breaks down by manual control handle, thus the reliability of equipment improved greatly.
 
Description of drawings
Fig. 1 is the structural representation of automatic control system of the present invention;
Among the figure, 1-master controller, 2-actuator, 3-intrinsic safety electric source, 4-central station, 5-terminal mechanism, 11-center processor, 12-touch LCD screen, 13-storer, 14-little LCDs, 15-control handle, 21-drive circuit module, 22-relay, 23-data memory module, 24-display module, 25-infrared remote control receiver module, 26-SOT state of termination Acquisition Circuit module.
 
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the present invention is based on the mining automatic control system of MCU, comprise master controller 1 and actuator 2, described actuator 2 has several and is connected with master controller 1 respectively.Described master controller 1 is installed on specific control area, center, down-hole, channel hub place as the down-hole, each actuator 2 is arranged at corresponding collection site respectively, the actuator 2 of each collection site is connected with the terminal mechanism 5 of its place collection site respectively, terminal mechanism 5 mainly is butterfly valve and pump among the present invention, and described master controller 1 is by butterfly valve and pump work on the corresponding pipeline of actuator 2 controls that is arranged at each collection site.Among the present invention, being provided with in master controller 1 and adopting the center processor 11(of fpga chip is MCU), by described FPGA(Field-Programmable Gate Array, field programmable gate array) chip can carry out custom programming and set logic control relation according to the quantity of down-hole butterfly valve and pump and position relation thereof etc., on described center processor 11, be connected with touch LCD screen 12, storer 13 and several little LCDs 14, also be connected with the control handle 15 that is used to adjust the actuator duty on described little LCDs 14, described control handle 15 is input to center processor 11 by little LCDs 14 with manual control signal; Among the present invention, the quantity of little LCDs 14 is corresponding with the quantity of actuator, can be 1:1, also can be 1:2, concrete ratio can be decided according to on-the-spot needs, the duty of each actuator is all passed through corresponding little LCDs output and is shown, on each little LCDs, all be connected with one or more control handles 15, described control handle 15 is corresponding with actuator 2, be that each actuator has all disposed one or two and is used for the manually control handle 15 of control, can select the control relation and the duty of actuator by control handle 15, and can shield 12 at touch LCD and use as Beck-up Control System when breaking down, thereby the operate as normal of safeguards system.Described actuator 2 serves as to handle core with the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer is connected the transmission of the line data of going forward side by side by RS485 bus and center processor 11, output terminal at the MSP430 single-chip microcomputer is parallel with several drive circuit module 21 and several SOT state of termination Acquisition Circuit modules 26, on each drive circuit module 21, all be connected with a relay 22 that is used for connecting terminal mechanism 5, on each relay 22, can correspondingly connect a butterfly valve or pump, the MSP430 single-chip microcomputer passes through the closed or disconnection of driving circuit pilot relay during work, thereby reaches the purpose that butterfly valve or pump are switched on or switched off.Among the present invention, described drive circuit module 21 and relay 22 all can adopt existing circuit, and drive circuit module 21 and relay 22 mainly are to be used to carry out the order that the MSP430 single-chip microcomputer sends here; But, because drive circuit module 21 and relay 22 become one with the MSP430 single-chip microcomputer, therefore the function of actuator 2 becomes more powerful, thereby make actuator when being connected with the butterfly valve of terminal mechanism or pump, no longer need the special relay cabinet of configuration in addition, the structure of total system is simplified more, particularly reduced a large amount of wirings, the equipment operation safety under the mine is had great raising.Safety for further safeguards system operation, described center processor 11, MSP430 single-chip microcomputer, touch LCD screen 12 and little LCDs 14 are by intrinsic safety electric source 3 power supplies, described intrinsic safety electric source 3 is power-supply devices commonly used in the coal mine operation, the DHK-(B) that produces as Jiangsu Xin Li Scientific and Technical Industry Co., Ltd exports intrinsically safe power supply, it has the characteristic that the discharge energy under extreme case can not lighted damp, therefore can avoid the power connection place to set off an explosion owing to producing spark.
During system works, the staff imports controlled variable by the screen 12 of the touch LCD on the master controller 1 to center processor 11, described controlled variable comprises the logic control relation and the logic control condition of actuator and terminal mechanism, the staff can also configure the logic control condition for corresponding actuator by control handle 15, center processor 11 is according to the MSP430 single-chip microcomputer transmitting control commands of described controlled variable in actuator 2, the MSP430 single-chip microcomputer is controlled corresponding drive circuit module 21 and relay 22 and is driven the terminal mechanism action according to described control command, for example open some butterfly valves or close some pumps, also can control the open degree of butterfly valve or pump etc.; After described terminal mechanism 5 carries out action, the status signal of SOT state of termination Acquisition Circuit module 26 acquisition terminal mechanisms 5 also feeds back to the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer sends to center processor 11 in the master controller 1 with described status signal, and center processor 11 is by little LCDs 14 and the 12 output demonstrations of touch LCD screen.The MSP430 single-chip microcomputer makes signal form the loop after described status signal is fed back to master controller 1, whether the order that helps people to judge that single-chip microcomputer sends is performed, thereby reach the purpose that improves system reliability, and can also whether normally judge and observe system works, wherein, described analog quantity acquiring device and switch acquisition device are prior art equipment.
Referring to Fig. 1, center processor 11 of the present invention is also communicated by letter with central station 4 by the RS485 bus, described central station 4 is positioned at ground, also can carry out the parameter setting by central station 4 to master controller 1, and can obtain the feedback parameter of each actuator duty in real time, the staff on ground just can observe the operation conditions of downhole system timely by central station 4, and can adjust timely according to observed parameter.
Referring to Fig. 1, in actuator 2, also be provided with data memory module 23 and display module 24, described data memory module 23 is connected on the I/O port of MSP430 single-chip microcomputer, described display module 24 links to each other with the output terminal of MSP430 single-chip microcomputer, can store the data that actuator receives and sends by memory module 23, display module 24 is used for the duty of current actuator is shown in real time, makes things convenient for the staff to patrol.MSP430 single-chip microcomputer input end in each actuator all is connected with the infrared remote control receiver module 25 that is used to receive infrared remote-controlled signal, the staff can carry out far distance controlled by Infrared remote controller when operation, particularly in same collection site under the more situation of butterfly valve and pump, adopt the mode of infrared remote control can obviously alleviate staff's burden, also be convenient to management simultaneously.
In the system of the present invention, no matter be master controller 1, actuator 2 or central station 4, the duty that observes terminal mechanism 5 that can be real-time, the convenient like this personnel on each post go and find out what's going on timely; And the version that master controller 1 and actuator 2 are separated is to design at mine special geological environment specially, between master controller 1 and actuator 2, adopt the RS485 bus communication not only obviously to strengthen stability of data transmission and speed, the more important thing is that the RS485 bus adopts the light current transmission, than common cable adopt the mode of forceful electric power easier, safety and reliable; And system adopts control program flexibly, and the user is according to different mine capable freely changing controlling schemes, and flexibility ratio is very high, and operation is very simple, has been completely free of the fixed mode of conventional P LC, can be applicable to the mine of various varying environments.

Claims (5)

1. based on the mining automatic control system of MCU, it is characterized in that, comprise master controller (1) and actuator (2), described actuator (2) has several and is connected with master controller (1) respectively; In master controller (1), be provided with the center processor (11) that adopts fpga chip, on described center processor (11), be connected with touch LCD screen (12), storer (13) and several little LCDs (14); Described actuator (2) serves as to handle core with the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer is connected with center processor (11) by the RS485 bus, output terminal at the MSP430 single-chip microcomputer is parallel with several drive circuit modules (21) and several SOT state of termination Acquisition Circuit modules (26), all is connected with a relay (22) that is used for connecting terminal mechanism (5) on each drive circuit module (21); Described center processor (11), MSP430 single-chip microcomputer, touch LCD screen (12) and little LCDs (14) are powered by intrinsic safety electric source (3); During described master controller (1) work, import controlled variable by touch LCD screen (12) to center processor (11), center processor (11) is according to the MSP430 single-chip microcomputer transmitting control commands of described controlled variable in actuator (2), and the MSP430 single-chip microcomputer is controlled corresponding drive circuit module (21) and relay (22) and driven terminal mechanism (5) action according to described control command; After described terminal mechanism (5) carries out action, the status signal of SOT state of termination Acquisition Circuit module (26) acquisition terminal mechanism (5) also feeds back to the MSP430 single-chip microcomputer, described MSP430 single-chip microcomputer sends to the interior center processor (11) of master controller (1) with described status signal, and center processor (11) shows by little LCDs (14) and touch LCD screen (12) output.
2. the mining automatic control system based on MCU according to claim 1, it is characterized in that, also be connected with the control handle (15) that is used to adjust the actuator duty on described little LCDs (14), described control handle (15) is input to center processor (11) by little LCDs (14) with manual control signal.
3. the mining automatic control system based on MCU according to claim 1 is characterized in that, described center processor (11) is also communicated by letter with central station (4) by the RS485 bus.
4. the mining automatic control system based on MCU according to claim 1, it is characterized in that, also be provided with data memory module (23) and display module (24) in the described actuator (2), described data memory module (23) is connected on the I/O port of MSP430 single-chip microcomputer, and described display module (24) links to each other with the output terminal of MSP430 single-chip microcomputer.
5. according to claim 1 or 4 described mining automatic control systems, it is characterized in that, also be connected with the infrared remote control receiver module (25) that is used to receive infrared remote-controlled signal at the input end of described MSP430 single-chip microcomputer based on MCU.
CN2010105661534A 2010-11-30 2010-11-30 MCU-based mining automatic control system Active CN101976076B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105573362A (en) * 2015-12-31 2016-05-11 国网浙江奉化市供电公司 Dehumidifying system, and control system and control method thereof
CN114323096A (en) * 2021-12-10 2022-04-12 中国船舶重工集团公司第七一九研究所 General type process parameter display instrument

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Publication number Priority date Publication date Assignee Title
US4052703A (en) * 1975-05-05 1977-10-04 Automatic Terminal Information Systems, Inc. Intelligent multiplex system for subsurface wells
JPH10164775A (en) * 1996-11-26 1998-06-19 Hitachi Ltd Breaker in distribution board and remote monitoring control system
CN2787838Y (en) * 2005-01-07 2006-06-14 辽宁工程技术大学 Intelligent monitoring data acquisition and communication device for comprehensive environment of mine
CN201331694Y (en) * 2009-01-19 2009-10-21 重庆梅安森科技发展有限责任公司 Mining essential safe type monitoring substation
CN201331693Y (en) * 2008-12-30 2009-10-21 电光防爆科技(上海)有限公司 Mine intrinsically safe monitoring substation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052703A (en) * 1975-05-05 1977-10-04 Automatic Terminal Information Systems, Inc. Intelligent multiplex system for subsurface wells
JPH10164775A (en) * 1996-11-26 1998-06-19 Hitachi Ltd Breaker in distribution board and remote monitoring control system
CN2787838Y (en) * 2005-01-07 2006-06-14 辽宁工程技术大学 Intelligent monitoring data acquisition and communication device for comprehensive environment of mine
CN201331693Y (en) * 2008-12-30 2009-10-21 电光防爆科技(上海)有限公司 Mine intrinsically safe monitoring substation
CN201331694Y (en) * 2009-01-19 2009-10-21 重庆梅安森科技发展有限责任公司 Mining essential safe type monitoring substation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105573362A (en) * 2015-12-31 2016-05-11 国网浙江奉化市供电公司 Dehumidifying system, and control system and control method thereof
CN105573362B (en) * 2015-12-31 2017-10-20 国网浙江奉化市供电公司 A kind of dehumidification system and its control system and control method
CN114323096A (en) * 2021-12-10 2022-04-12 中国船舶重工集团公司第七一九研究所 General type process parameter display instrument

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