CN101101003B - Mine single lane tunneling aeration machine integrated control system - Google Patents
Mine single lane tunneling aeration machine integrated control system Download PDFInfo
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- CN101101003B CN101101003B CN2007100624984A CN200710062498A CN101101003B CN 101101003 B CN101101003 B CN 101101003B CN 2007100624984 A CN2007100624984 A CN 2007100624984A CN 200710062498 A CN200710062498 A CN 200710062498A CN 101101003 B CN101101003 B CN 101101003B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
This invention discloses mine single- tunnel driving ventilator integrating control system. PLC connects to frequency converter and display screen by series communicating interface. PLC connects to communicating expand module and analog value expand module by I/O bus. Main protecting circuit board and engine protecting circuit board connect to analog value expand module by I/O interface. PLC connects to main protecting circuit board and engine circuit board by I/O interface. This invention uses PLC as central processor and has hardware circuit and the control method. It achieves the stable switch of various controlling methods and protection function such as electric leakage, symmetric short, overload and steady state over-voltage. This invention ensures the continuity of tunneling ventilation and safety of gas discharging. It is adapted for tunneling ventilation of mine single tunnel driving working face and gas discharging.
Description
Technical field
The present invention relates to a kind of mine laneway tunneling ventilation control system, particularly a kind of mine single lane tunneling aeration machine integrated control system that is used for.
Technical background
Existing mine laneway tunneling aeration machine automatic control system has two classes, one class is satisfied with to deliver in " mining safety and environmental protection " in June, 2005 " development of mining partial ventilator automatic switching control equipment " as the dish river coal electricity Dong of company in generation, introduce coal mine evacuation working face and specialized in the automatic switchover working principle of working fan and power standby fan start-stop, and pass through The field, the start-stop of effectively having implemented working fan and standby fan automaticallyes switch, and has guaranteed the continuously normal air feed of driving face; " the KJD11 booster automatic switchover monitoring unit " that also has the Chen Chaofan of table mountain Coal Industry Group company to deliver in " safety of coal mines " December calendar year 2001, realized that automatic switchover between special standby fan can replace a driving face again and should drop into 3～5 equipment on/off transducers and 1 circuit breaking controller, improved the safety reliability of the local gout of driving face in coal mine.These two kinds of devices can only be controlled the running of booster power frequency, work as gas exceeding limit, adopt methods such as adding baffle plate, control air door during firedamp drainage, during these method firedamp drainages, air quantity control is difficult for holding, only come the size of given wind supply quantity, be easy to cause full blast to press distinguished and admirable mixing place gas density to transfinite, produce potential safety hazard with drawing-off gas person's experience; Another kind ofly wish that as China Mining University dragon remembers that " fuzzy control technology of mining variable-frequency speed-regulating local fan " delivered at " coal science and technology " in April, 2003 proposed a kind of fuzzy controller and Decoupling design mode thereof, realized the fuzzy control of gas density and booster frequency control of motor speed; Also having triumphant " based on the intelligent local ventilation machine control system research of DSP " delivered in " coal engineering " in 2005 the 3rd phases of the He Yu of Bohai University is the control core with DSP, speed-adjustable motor drives booster, adopt advanced control devices such as intelligent control, constitute intelligent local ventilation machine control system, the gas that gathers in the digging laneway is not had the discharging automatically of transfiniting.No matter these two kinds of systems are at tunneling ventilation or drawing-off gas state, all the time control booster frequency conversion running, though this mode plays effect energy-conservation and the gas safety discharging, but when frequency variator is in running state all the time in explosion-proof chamber, heat dissipating capacity is big, the life-span reduction, the rate of fault height influences the safety work under the coal mine.
Summary of the invention
The present invention is a kind of mine single lane tunneling aeration machine integrated control system; and be purpose with the hardware configuration that a kind of mine single lane tunneling aeration machine integrated control system is provided, in order to solve switch between mine single entry driving working surface booster unreliable, motor protection function is unsound and the problem of booster frequency conversion firedamp drainage.
The present invention is based on the problems referred to above and purpose, adopt the PLC special programming software to carry out programming, and the PID that provides by software instruction guide, design PID controller, this PID controller can be according to the size of input gas concentration, output control corresponding amount changes the booster rotating speed, realizes that gas discharges automatically.
The technical solution used in the present invention comprises PLC, frequency variator, communication expansion module, analog amount expansion module, main protection circuit plate, motor protecting circuit plate and display screen.
Wherein, PLC is connected by serial ports with display device with frequency variator; PLC is connected by the I/O ECP Extended Capabilities Port with the analog amount expansion module with the communication expansion module; The main protection circuit plate is connected by the I/O mouth with the analog amount expansion module respectively with the motor protecting circuit plate; PLC is connected by the I/O mouth with main protection circuit plate, motor protecting circuit plate respectively.
The main protection circuit plate is that the main protection circuit plate is the circuit board that is made of voltage detecting circuit and system's setting current parameter input circlult.
Voltage detecting circuit is that any two of voltage transformer input end and cable is connected, and the single phase bridge type rectifier circu input end is connected capacitor C with the voltage transformer output terminal
1With polar capacitor C
2Be parallel to the output terminal of single phase bridge type rectifier circu respectively, resistance R
1One end and polar capacitor C
2Anodal connection, resistance R
1The other end and potentiometer RP
1One end connects, potentiometer RP
1The other end, capacitor C
1One end, polar capacitor C
2The other end common ground of negative pole and single phase bridge type rectifier circu output terminal.
System's setting current parameter input circlult is that electrical level conversion circuit I input end is connected with the PLC output terminal, electrical level conversion circuit I output terminal and BCD dial-up dish B
1, BCD dial-up dish B
2, BCD dial-up dish B
3With BCD dial-up dish B
4Input control line connect BCD dial-up dish B
1, BCD dial-up dish B
2, BCD dial-up dish B
3With BCD dial-up dish B
4The binary-coded decimal output signal line be connected with+5V power supply through current-limiting resistance, the input end of AND NOT gate I, AND NOT gate II, AND NOT gate III and AND NOT gate IV respectively with BCD dial-up dish B
1, BCD dial-up dish B
2, BCD dial-up dish B
3With BCD dial-up dish B
4The binary-coded decimal output signal line connect, electrical level conversion circuit II input end end is connected with AND NOT gate I, AND NOT gate II, AND NOT gate III and the output terminal of AND NOT gate IV respectively, electrical level conversion circuit II output terminal is connected with the input end of PLC I/O mouth.
The motor protecting circuit plate is a circuit board that is made of current detection circuit and earth leakage search/lockout circuit.
Current detection circuit is a resistance R
2Be parallel to the current transformer output terminal, commutation diode D
1Be series at resistance R
2One end and capacitor C
3One end, capacitor C
3One end and diode D
1One end connects, capacitor C
3The other end ground connection, capacitor C
4Be parallel to capacitor C
3Two ends, potentiometer RP
2Be series at capacitor C
4One end and resistance R
3One end, resistance R
3Be series at potentiometer RP
2The other end and resistance R
5One end, resistance R
4One end and resistance R
5One end connects, resistance R
5The other end and voltage-stabiliser tube V
1One end connects, resistance R
2The other end, capacitor C
3The other end, capacitor C
4The other end, resistance R
4The other end and voltage-stabiliser tube V
1The other end common ground.
The earth leakage search/lockout circuit is that the earth leakage search/lockout circuit is that the single phase bridge type rectifier circu input end is connected with ac power supply, polar capacitor C
5And capacitor C
6Be parallel to the single phase bridge type rectifier circu output terminal after the parallel connection jointly, an end and the capacitor C of regulator block input end
6One end connects, the other end of regulator block input end and voltage-stabiliser tube V
2One end connects, regulator block output terminal and capacitor C
7One end connects, capacitor C
7With polar capacitor C
8Parallel connection, resistance R
6Be series at polar capacitor C
8Positive pole and resistance R
6One end, potentiometer RP
3One end and resistance R
6The other end connects, resistance R
7One end and voltage-stabiliser tube V
3The other end connects, resistance R
8The other end and voltage-stabiliser tube V
3One end connects, resistance R
7The other end and voltage-stabiliser tube V
3The other end connects back ground connection, the other end of single phase bridge type rectifier circu output terminal, polar capacitor C
5Negative pole, capacitor C
6The other end, voltage-stabiliser tube V
2The other end, capacitor C
7The other end and polar capacitor C
8Negative pole is connected in cable A phase jointly.
Electrical level conversion circuit I is a resistance R
9And transistor T
1Base stage connects, capacitor C
9Be connected in transistor T
1Between base stage and the ground, transistor T
1Grounded-emitter connection, resistance R
10Be connected to+24V power supply and transistor T
1Between the collector electrode.
Electrical level conversion circuit II is a resistance R
11And transistor T
2Base stage connects, capacitor C
10Be connected in transistor T
2Between base stage and the ground, transistor T
2Grounded-emitter connection, resistance R
12Be connected to+5V power supply and transistor T
2Between the collector electrode.
The controlling method of a kind of mine single lane tunneling aeration machine integrated control system of the present invention, this method are the starting integrated control systems, if firedamp sensor T
1〉=1%, system enters the firedamp drainage state, as firedamp sensor T
1＜1%, firedamp sensor T
2＜1% and frequency variator when running to power frequency, to delay time 10 minutes, drawing-off gas finishes, and booster inserts power frequency supply and carries out tunneling ventilation; If firedamp sensor T
1＜1%, carry out tunneling ventilation; In system's tunneling ventilation process, as firedamp sensor T
1, disconnect vacuum contactor K at 〉=1% o'clock
3, delayed time 30 seconds, enter the firedamp drainage state, after drawing-off gas finishes, enter the power frequency operation state;
If firedamp sensor T
2Break down, manual drain gas is carried out in the then out of service automatically and warning of system this moment;
After fault treatment finishes, carry out the zero load check;
Hinder for some reason and automatically during convert failed at two cover centralized control systems, the maintenance of reporting to the police, and select a cover centralized control system unprotect starting, centralized control system will starts booster and carry out power frequency and turn round.
A kind of mine single entry driving of the present invention booster integrated control system; with PLC as central processing unit; hardware circuit and controlling method have been designed; can realize protective functions such as the stable switching of various controlling methods and earth leakage search/lockout, symmetrical short-circuit, overload, steady-state overvoltage, be specially adapted to the tunneling ventilation and the drawing-off gas of mine single entry driving working surface.Wherein the steady-state overvoltage protective circuit is simple and practical, and its testing signal becomes strict linear relationship with line voltage, and PLC detects this signal in real time and makes corresponding judgment and handle, and has realized the steady state voltage failure protection function; Use AND NOT gate to realize the input of setting parameter, saved a large amount of I/O mouths of PLC, reduced system cost; Various overcurrent fault can accurately be judged and excise to current detection circuit, realizes system's three-phase shortcircuit and overload protection function; Centralized control system earth leakage search/lockout protective function can be judged the cable insulation fault fast, shortens and searches fault time, increases work efficiency.When the coal mine roadway gas concentration was lower than safety value, booster inserted power frequency supply and carries out tunneling ventilation; When gas density transfinited, booster inserted inverter output terminal and carries out drawing-off gas, does the purpose that has both reached safety dumping gas like this, problems such as the heating value that has caused when having avoided the frequency variator long-time running again is big, life-span reduction.The PID controller can be determined corresponding relation between gas density and booster rotating speed, can export to press with full blast and distinguished and admirablely mix the corresponding controlled quentity controlled variable of place gas density size, thereby realize that gas density do not have the safety dumping of transfiniting.The present invention shows through on-the-spot runnability: system is stable, reliable in action, technical order adhere to specification, and has guaranteed the continuity of tunneling ventilation and the Security of drawing-off gas to greatest extent, has guaranteed the safety in production of mine.
Description of drawings
Fig. 1 is an integrated control system structural representation block diagram of the present invention
Fig. 2 is an integrated control system main electrical scheme schematic representation of the present invention
Fig. 3 is a mine laneway firedamp sensor distribution schematic diagram of the present invention
Fig. 4 is voltage detecting circuit figure of the present invention
Fig. 5 is the setting current parameter input circlult figure of system of the present invention
Fig. 6 is current detection circuit figure of the present invention
Fig. 7 is an earth leakage search/lockout circuit diagram of the present invention
Fig. 8 is the schematic representation of electrical level conversion circuit I of the present invention
Fig. 9 is the schematic representation of electrical level conversion circuit II of the present invention
Among the figure: 1:PLC 2: frequency variator 3: main protection circuit plate 4: motor protecting circuit plate 5: communication expansion module 6: analog amount expansion module 7: display screen 8: contactor K
19: contactor K
210: contactor K
311: booster 12: firedamp sensor T
113: firedamp sensor T
214: voltage transformer 15: single phase bridge type rectifier circu I 16: capacitor C
117: resistance R
118: potentiometer RP
119: current-limiting resistance 20: electrical level conversion circuit I 21:BCD dial-up dish B
122:BCD dial-up dish B
223:BCD dial-up dish B
324:BCD dial-up dish B
425: AND NOT gate I 26: AND NOT gate II 27: AND NOT gate III 28: AND NOT gate IV 29: electrical level conversion circuit II 30: resistance R
231: commutation diode D
132: potentiometer RP
233: resistance R
334: resistance R
535: capacitor C
336: capacitor C
437: resistance R
438: voltage-stabiliser tube V
139: single phase bridge type rectifier circu II 40: regulator block 41: resistance R
642: polar capacitor C
543: capacitor C
644: voltage-stabiliser tube V
245: capacitor C
746: polar capacitor C
847: resistance R
748: potentiometer RP
349: voltage-stabiliser tube V
350: resistance R
851: resistance R
952: resistance R
1053: transistor T
154: capacitor C
955: resistance R
1156: transistor T
257: resistance R
1258: capacitor C
1059: polar capacitor C
260: current transformer
Embodiment
The present invention is described in further detail below with example in conjunction with the accompanying drawings:
Present embodiment adopts PID controller and frequency variator to realize that gas does not have the automatic discharge function that transfinites, the PID instruction guide of wherein adopting SIEMENSS7-200 series of PLC special programming software Step7 Microwin V4.0 software to provide has been designed the PID controller, utilizing this PID instruction guide to carry out parameter step by step sets, just can generate the PID controller, this controller obtains full blast according to these samplings and presses the gas density of distinguished and admirable mixing place to carry out the PID computing, thus the output frequency of control frequency variator.Frequency variator adopts the CHF series universal frequency converter of Shenzhen Ying Weiteng company, and this frequency variator is the U/F control mode, has the RS-485 communication port, can with the communication of SIEMENS S7-200 series of PLC.
As shown in Figure 1, the specific embodiment of the invention comprises PLC 1, frequency variator 2, communication expansion module 5, analog amount expansion module 6, main protection circuit plate 3, motor protecting circuit plate 4 and big screen LCD 7.
Wherein, PLC1 and frequency variator 2 and big screen LCD 7 are connected by serial ports; PLC 1 is connected by the I/O ECP Extended Capabilities Port with analog amount expansion module 6 with communication expansion module 5; Main protection circuit plate 3 is connected by the I/O mouth with analog amount expansion module 6 respectively with motor protecting circuit plate 4; PLC1 is connected by the I/O mouth with main protection circuit plate 3, motor protecting circuit plate 4 respectively.
Main protection circuit plate 3 is the circuit boards that are made of voltage detecting circuit and system's setting current parameter input circlult.
Voltage detecting circuit is that any two of voltage transformer 14 input ends and cable is connected, and single phase bridge type rectifier circu 15 input ends are connected capacitor C with voltage transformer 14 output terminals
116 and polar capacitor C
259 are parallel to the output terminal of single phase bridge type rectifier circu I15, resistance R respectively
117 1 ends and polar capacitor C
259 anodal connections, resistance R
117 the other ends and potentiometer RP
118 1 ends connect, potentiometer RP
118 the other ends, capacitor C
116 1 ends, polar capacitor C
2The other end common ground of 59 negative poles and single phase bridge type rectifier circu I15 output terminal.
System's setting current parameter input circlult is that electrical level conversion circuit I 20 input ends are connected with PLC 1 output terminal, electrical level conversion circuit I 20 output terminals and BCD dial-up dish B
121, BCD dial-up dish B
222, BCD dial-up dish B
323 and BCD dial-up dish B
424 input control line connects, BCD dial-up dish B
121, BCD dial-up dish B
222, BCD dial-up dish B
323 and BCD dial-up dish B
424 binary-coded decimal output signal line is connected with+5V power supply through current-limiting resistance 19, the input end of AND NOT gate I25, AND NOT gate II26, AND NOT gate III27 and AND NOT gate IV28 respectively with BCD dial-up dish B
121, BCD dial-up dish B
222, BCD dial-up dish B
323 and BCD dial-up dish B
424 binary-coded decimal output signal line connects, electrical level conversion circuit II 29 input end ends are connected with AND NOT gate I 25, AND NOT gate II26, AND NOT gate III27 and the output terminal of AND NOT gate IV28 respectively, and the input end of electrical level conversion circuit II29 output terminal and PLC1I/O mouth is connected.
Motor protecting circuit plate 4 is circuit boards that are made of current detection circuit and earth leakage search/lockout circuit.
Current detection circuit is a resistance R
230 are parallel to current transformer 60 output terminals, commutation diode D
131 are series at resistance R
230 1 ends and capacitor C
335 1 ends, capacitor C
335 1 ends and diode D
131 1 ends connect, capacitor C
335 the other end ground connection, capacitor C
436 are parallel to capacitor C
335 two ends, potentiometer RP
232 are series at capacitor C
436 1 ends and resistance R
333 1 ends, resistance R
333 are series at potentiometer RP
232 the other ends and resistance R
534 1 ends, resistance R
437 1 ends and resistance R
534 1 ends connect, resistance R
534 the other ends and voltage-stabiliser tube V
138 1 ends connect, resistance R
260 the other ends, capacitor C
335 the other ends, capacitor C
436 the other ends, resistance R
437 the other ends and voltage-stabiliser tube V
138 the other end common grounds.
The earth leakage search/lockout circuit is that the earth leakage search/lockout circuit is that single phase bridge type rectifier circu II39 input end is connected polar capacitor C with ac power supply
542 and capacitor C
6Be parallel to single phase bridge type rectifier circu II 39 output terminals after 43 parallel connections jointly, an end and the capacitor C of regulator block 40 input ends
643 1 ends connect, the other end of regulator block 40 input ends and voltage-stabiliser tube V
244 1 ends connect, regulator block 40 output terminals and capacitor C
745 1 ends connect, capacitor C
745 and polar capacitor C
846 parallel connections, resistance R
641 are series at polar capacitor C
846 positive poles and resistance R
841 1 ends, potentiometer RP
348 1 ends and resistance R
641 the other ends connect, resistance R
747 1 ends and voltage-stabiliser tube V
349 the other ends connect, resistance R
848 the other ends and voltage-stabiliser tube V
349 1 ends connect, resistance R
7The other end and voltage-stabiliser tube V
349 the other ends connect back ground connection, the other end of single phase bridge type rectifier circu II39 output terminal, polar capacitor C
542 negative poles, capacitor C
643 the other ends, voltage-stabiliser tube V
244 the other end, capacitor C
745 the other end and polar capacitor C
846 negative poles are connected in cable A phase jointly.
Electrical level conversion circuit I20 is a resistance R
951 and transistor T
153 base stages connect, capacitor C
954 are connected in transistor T
1Between 53 base stages and the ground, transistor T
153 grounded-emitter connections, resistance R
1052 are connected to+24V power supply and transistor T
1Between 52 collector electrodes.
Electrical level conversion circuit II29 is a resistance R
1155 and transistor T
256 base stages connect, capacitor C
1058 are connected in transistor T
2Between 56 base stages and the ground, transistor T
256 grounded-emitter connections, resistance R
1257 are connected to+5V power supply and transistor T
2Between 56 collector electrodes.
The present invention is based on above-mentioned mine single lane tunneling aeration machine integrated control system, those skilled in the art dispose the combination of corresponding software and software, and adopt the controlling method of following mine single lane tunneling aeration machine integrated control system, be achieved the automatic control of mine single lane tunneling aeration machine integrated control system.
The present invention realizes that the controlling method of a kind of mine single lane tunneling aeration machine integrated control system of above-mentioned main purpose is: press starting button, contactor K
18, K
29 adhesives, 11 soft starts of frequency variator 2 control boosters are to 20Hz, and PLC 1 detects driving face place gas density, if T
112 〉=1%, then system enters the firedamp drainage state, and this moment, system pressed distinguished and admirable mixing place gas density T according to full blast
2The sizes of 13 values are adjusted the rotating speed of booster 11 automatically, work as T
112＜1%, T
213＜1% and frequency variator 2 when running to power frequency, to delay time 10 minutes, drawing-off gas finishes, contactor K
18, K
29 disconnect K
310 adhesives, booster 11 insert power frequency supply and carry out tunneling ventilation; If T
18＜1%, then frequency variator 2 moves to power frequency, contactor K
18, K
29 disconnect K
3Tunneling ventilation is carried out in 10 adhesives; In system's tunneling ventilation process, firedamp sensor T
112 detect the driving face gas density in real time, work as T
1, disconnect contactor K at 12 〉=1% o'clock
310, delayed time adhesive contactor K 30 seconds
18, K
29, starting frequency variator 2 enters the firedamp drainage state, after drawing-off gas finishes, and contactor K
18, K
29 disconnect K
310 adhesives enter the power frequency operation state.
In system's running, PLC 1 detects and shows the running parameter and the working state of booster 11 in real time, if booster 11 breaks down, the contactor automatic trip also shows fault type and fault parameter, warning 30 seconds.At this moment, the centralized control system that is in hot stand-by duty is controlled corresponding booster 11 automatic soft starts.
In the firedamp drainage process, if firedamp sensor breaks down, then system automatically out of service and alert notice underground work personnel carry out manual drain gas.At this moment, the staff can press distinguished and admirable mixing place gas density according to the full blast that the gas monitor personnel provide, adjust the frequency of frequency variator 2 by " increase " and " reducing " button, realization booster 11 rotating speeds are manually controlled, and then the size of control booster 11 wind supply quantities, booster 11 rotating speeds slowly change, and can not make the Volume of Blast in Driving Face sudden change, so can realize the gas safety discharging.
After the failure system maintenance finishes, need test to the maintenance effect.At this moment, system's main circuit power is cut off, and the used control power supply of centralized control system is taken from the insulating phase-change switch end of incoming cables, can realize inoperative and the every control function of check centralized control system.
If in system's running, when two cover centralized control systems produced automatic convert failed because of itself going wrong, alarm system was alert with president's Times, immediately two set of fault systems is overhauled with the caution staff.Simultaneously, the staff selects a cover centralized control system, presses starting button, and centralized control system will start two motors 11 simultaneously and carry out the power frequency running.Should be noted that; this moment, this centralized control system was in the unprotect working state; so should overhaul an other set of fault system as early as possible; maintenance finishes and goes forward side by side after line space carries test; system in earlier out of service; the good centralized control system of starting maintenance after the normal operation of the system that treats, overhauls an other cover centralized control system more then.
Claims (3)
1. mine single lane tunneling aeration machine integrated control system, comprise PLC (1), frequency variator (2), communication expansion module (5), analog amount expansion module (6) and display screen (7), it is characterized in that PLC (1) is connected by serial communication interface respectively with display screen (7) with frequency variator (2); PLC (1) is connected by the I/O ECP Extended Capabilities Port respectively with analog amount expansion module (6) with communication expansion module (5); Main protection circuit plate (3) is connected by the I/O mouth with analog amount expansion module (6) respectively with motor protecting circuit plate (4); PLC (1) is connected by the I/O mouth with motor protecting circuit plate (4) with main protection circuit plate (3) respectively;
Described main protection circuit plate (3) is to be made of voltage detecting circuit and system's setting current parameter input circlult, wherein,
Described voltage detecting circuit is that any two of the input end of voltage transformer (14) and cable is connected, and single phase bridge type rectifier circu I (15) input end is connected capacitor C with voltage transformer (14) output terminal
1(16) and polar capacitor C
2(59) be parallel to the output terminal of single phase bridge type rectifier circu I (15) respectively, resistance R
1(17) one ends and polar capacitor C
2(59) anodal connection, resistance R
1(17) the other end and potentiometer RP
1(18) one ends connect, potentiometer RP
1(18) the other end, capacitor C
1(16) one ends, polar capacitor C
2(59) the other end common ground of negative pole and single phase bridge type rectifier circu I (15) output terminal;
Described system setting current parameter input circlult is that electrical level conversion circuit I (20) input end is connected with PLC (1) output terminal, electrical level conversion circuit I (20) output terminal and BCD dial-up dish B
1(21), BCD dial-up dish B
2(22), BCD dial-up dish B
3(23) and BCD dial-up dish B
4(24) input control line connects, BCD dial-up dish B
1(21), BCD dial-up dish B
2(22), BCD dial-up dish B
3(23) and BCD dial-up dish B
4(24) binary-coded decimal output signal line is connected with+5V power supply through current-limiting resistance (19), the input end of AND NOT gate I (25), AND NOT gate II (26), AND NOT gate III (27) and AND NOT gate IV (28) respectively with BCD dial-up dish B
1(21), BCD dial-up dish B
2(22), BCD dial-up dish B
3(23) and BCD dial-up dish B
4(24) binary-coded decimal output signal line connects, electrical level conversion circuit II (29) input end is connected with AND NOT gate I (25), AND NOT gate II (26), AND NOT gate III (27) and the output terminal of AND NOT gate IV (28) respectively, and electrical level conversion circuit II (29) output terminal is connected with the input end of PLC (1) I/O mouth;
Described motor protecting circuit plate (4) is a circuit board that is made of current detection circuit and earth leakage search/lockout circuit, wherein,
Described current detection circuit is a resistance R
2(30) be parallel to current transformer (60) output terminal, commutation diode D
1(31) be series at resistance R
2(30) one end and capacitor C
3(35) one ends, capacitor C
3(35) one ends and commutation diode D
1(31) one ends connect, capacitor C
3(35) the other end ground connection, capacitor C
4(36) be parallel to electric capacity (35) C
3Two ends, potentiometer RP
2(32) be series at capacitor C
4(36) one end and resistance R
3(33) one ends, resistance R
3(33) be series at potentiometer RP
2(32) the other end and resistance R
5(34) one ends, resistance R
4(37) one end and resistance R
5(34) one ends connect, resistance R
5(34) the other end and voltage-stabiliser tube V
1(38) one ends connect, resistance R
2(30) the other end, capacitor C
3(35) the other end, capacitor C
4(36) the other end, resistance R
4(37) the other end and voltage-stabiliser tube V
1(38) the other end common ground;
Described earth leakage search/lockout circuit is that single phase bridge type rectifier circu II (39) input end is connected polar capacitor C with ac power supply
5(42) and capacitor C
6(43) be parallel to single phase bridge type rectifier circu II (39) output terminal after the parallel connection jointly, an end and the capacitor C of regulator block (40) input end
6(43) one ends connect, the other end and the voltage-stabiliser tube V of regulator block (40) input end
2(44) one ends connect, regulator block (40) output terminal and capacitor C
7(45) one ends connect, capacitor C
7(45) and polar capacitor C
8(46) parallel connection, resistance R
6(41) be series at polar capacitor C
8(46) positive pole and resistance R
8One end, potentiometer RP
3(48) one end and resistance R
6(41) the other end connects, resistance R
7(47) one ends and potentiometer RP
3The other end connects, resistance R
8(50) the other end and voltage-stabiliser tube V
3(49) one ends connect, resistance R
7(47) the other end and voltage-stabiliser tube V
3(49) the other end connects back ground connection, the other end, the polar capacitor C of single phase bridge type rectifier circu II (39) output terminal
5(42) negative pole, capacitor C
6(43) the other end, voltage-stabiliser tube V
2(44) the other end, capacitor C
7(45) the other end and polar capacitor C
8(46) the common conjunction cable A of negative pole phase.
2. mine single lane tunneling aeration machine integrated control system as claimed in claim 1 is characterized in that electrical level conversion circuit I (20) is a resistance R
9(51) and transistor T
1(53) base stage connects, capacitor C
9(54) be connected in transistor T
1(53) between base stage and the ground, transistor T
1(53) grounded-emitter connection, resistance R
10(52) be connected to+24V power supply and transistor T
1(53) between the collector electrode.
3. mine single lane tunneling aeration machine integrated control system as claimed in claim 1 is characterized in that electrical level conversion circuit II (29) is a resistance R
11(55) and transistor T
2(56) base stage connects, capacitor C
10(58) be connected in transistor T
2(56) between base stage and the ground, transistor T
2(56) grounded-emitter connection, resistance R
12(57) be connected to+5V power supply and transistor T
2(56) between the collector electrode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100624984A CN101101003B (en) | 2007-07-29 | 2007-07-29 | Mine single lane tunneling aeration machine integrated control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100624984A CN101101003B (en) | 2007-07-29 | 2007-07-29 | Mine single lane tunneling aeration machine integrated control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101003A CN101101003A (en) | 2008-01-09 |
| CN101101003B true CN101101003B (en) | 2010-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100624984A Expired - Fee Related CN101101003B (en) | 2007-07-29 | 2007-07-29 | Mine single lane tunneling aeration machine integrated control system |
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| CN102005727A (en) * | 2010-11-12 | 2011-04-06 | 煤炭科学研究总院重庆研究院 | Single motor protection device for dragging double motor through single frequency conversion |
| CN103133381B (en) * | 2011-11-28 | 2016-03-30 | 河南理工大学 | Ventilator automatic frequency adjustment controlling method and device thereof |
| CN102420563B (en) * | 2011-12-19 | 2015-03-04 | 广州智光电机有限公司 | Intelligent bypass system for high-voltage frequency converter |
| CN102420564B (en) * | 2011-12-19 | 2015-03-04 | 广州智光电机有限公司 | Intelligent bypass system for high-voltage frequency converter |
| CN103401314A (en) * | 2013-08-15 | 2013-11-20 | 南京新联电子股份有限公司 | Off-line setting method for constant values of intelligent switch assembly |
| CN104198919B (en) * | 2014-09-15 | 2017-08-25 | 上海交通大学 | Steering tool electric circuit in well plate performance monitoring system based on KingView and PLC |
| CN105221179B (en) * | 2015-10-21 | 2017-10-31 | 太原理工大学 | A kind of highly gassy mine Y type method of ventilations |
| CN107734040A (en) * | 2017-10-24 | 2018-02-23 | 徐州新南湖科技有限公司 | Ventilation blower communication component and Internet of things system |
| CN110545052A (en) * | 2019-09-03 | 2019-12-06 | 广东广顺新能源动力科技有限公司 | Control system for increasing starting torque of star connection three-phase motor |
| CN111764962B (en) * | 2020-06-25 | 2022-05-20 | 陕西省一九四煤田地质有限公司 | Coal mining back gas prediction model |
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