CN103213916B - Brake shoe gap monitoring system for mine hoister - Google Patents
Brake shoe gap monitoring system for mine hoister Download PDFInfo
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Abstract
A brake shoe clearance monitoring system for a mining hoister belongs to a hoister clearance monitoring system. The linear metal sensor of the monitoring system is connected with the input end of a minimum system of the single chip microcomputer through an eight-out-one analog switch, a setting switch and a reference power supply are connected with the input end of the minimum system of the single chip microcomputer, the output end of the minimum system of the single chip microcomputer is connected with an upper computer through a photoelectric isolation and communication interface, and start-stop control is connected with the minimum system of the single chip microcomputer through the photoelectric isolation. The advantages are that: 1. the intelligent alarm system has a self-checking function, can quickly cope with various possible faults, gives an alarm in time, ensures the safety of equipment and personnel, and has stable and reliable performance. 2. And a non-contact displacement sensor is adopted, so that the device is never worn and can stably and reliably operate for a long time. 3. The number of circuit boards and the number of sensors can be flexibly configured, and the requirements of various systems with different sizes are met. 4. And the system is in communication with a remote computer by adopting photoelectric isolation, so that the anti-interference capability of the system is improved.
Description
Technical field
The present invention relates to a kind of gig gap monitored control system, particularly a kind of Mine lifter brake shoe clearance monitored control system.
Background technology
Mine hoist is responsible for personnel, equipment to send into and propose mine, and the product under mine is proposed mine by mine hoist in a steady stream hourly, the position of gig be mine mine into and out of throat thoroughfare.The safe operation of gig, most important to whole mine.
Mine hoist by wire reel by cage hoisting or transfer, when the wire reel of gig stops the rotation, tightly embraced by several brake shoes being arranged on periphery, ensure that wire reel no longer rotates, prevent wire reel from gliding, if brake shoe can not embrace wire reel, then will there is the danger of downslide in gig.
The brake shoe of gig is a worn parts, in long-term work, can slowly thinning, and make the gap between brake shoe and wire reel become large, reduce coefficient of friction, even make brake shoe lose efficacy, become the hidden danger of mine serious accident.
The brake shoe of gig, is manipulated by hydraulic efficiency pressure system, because certain reason, likely makes brake shoe action malfunctioning, is also one of reason causing gig fault.
Summary of the invention
The object of the invention is to provide a kind of Mine lifter brake shoe clearance monitored control system, the brake shoe solving gig is manipulated by hydraulic efficiency pressure system, and brake shoe action is malfunctioning, causes the problem of gig fault.
The object of the present invention is achieved like this: this brake clearance monitored control system comprises: single-chip minimum system, switch is set, reference power supply, linear metal sensor, eight select an analog switch, Phototube Coupling, communication interface, upper computer computer and on off control; Linear metal sensor selects an analog switch to be connected with the input end of single-chip minimum system by eight, arrange switch to be connected with the input end of single-chip minimum system with reference power supply, the mouth of single-chip minimum system is connected with upper computer computer by Phototube Coupling, communication interface, and on off control is connected with single-chip minimum system by Phototube Coupling.
Described single-chip minimum system, 20th pin of micro controller system U5 connects+5V power supply, the 8th, 19 pin ground connection, and the 9th, 10 pin connect two pin meeting crystal oscillator Y1 respectively, 1st pin connects the electrify restoration circuit be made up of R19 and C25, this completes the connection of single-chip minimum system.
Described setting opens 2, arranges switch, i.e. S1, has 5 bit switches, one end all ground connection of 5 bit switches, and one end receives 22,23,24,25,26 pin of micro controller system U5 respectively in addition.
Described reference power supply, reference power supply has 2 tunnels to export, and wherein the 3rd pin of power module U7 exports reference voltage, is connected to the 5th pin of micro controller system U5, and the negative reference voltage exported by R18 potential device center tap, is connected to the 4th pin of micro controller system U5.
Described linear metal sensor, linear metal sensor is proximity transducer or hydraulic pressure transducer, and proximity transducer or hydraulic pressure transducer are all identical, respectively by P1, P3, P5, P7, P9, P10, P11, P12 totally 8 binding post drawing-in systems; Each sensor has 3 lead-in wires, wherein power supply termination+24V power supply, negativing ending grounding, and the signal of output is 4-20 milliampere electric current, and each road current signal all will flow through the standard resistance of 250 ohm, forms the voltage of 1-5 volt; Eight road signals are connected respectively to 13,14,15,12,1,5,2,4 pin that eight select an analog switch U4, and it is selected altogether.
Described eight select an analog switch, eight select an analog switch U4,16th pin connects+5V power supply, 7th, 8 pin ground connection, 9th, 10,11 pin are channel selecting ends, be connected respectively to the 11st of micro controller system U5 the, 12,13 pin, 8 road input signal cables access the signal output part of 8 linear metal proximity transducers or hydraulic pressure transducer respectively, the mouth of signal is the 3rd pin, and it is connected to the 2nd pin of micro controller system U5.
Described Phototube Coupling, Phototube Coupling comprises optocoupler O1 and optocoupler O2, optocoupler O1 the 7th, 8 pin connect+5V power supply, 5th pin ground connection, the 2nd pin connects the+5V power supply of isolation, and the 6th pin is output signal, connect the 18th pin of micro controller system U5, the 3rd pin is incoming signal, connects the 1st pin of communication interface chip U3;
2nd pin of optocoupler O2 connects+5V power supply, and the 8th pin connects the+5V power supply of isolation, and the 5th pin connects the ground of isolation.3rd pin is incoming signal, and connect the 17th pin of micro controller system U5, the 6th pin is output signal, connects the 4th pin of communication interface chip U3.
Described communication interface, the 8th pin of communication interface chip U3 connects the+5V power supply of isolation, and the 5th pin connects the ground of isolation, and the 1st pin connects the 3rd pin of optocoupler O1 through resistance R7, and the 4th pin connects the 6th pin of optocoupler O2, and the 6th, 7 pin connect the dynamo-electric brain in position.
Described upper computer computer, upper computer computer is exactly a Personal Computer, windows and " brake clearance monitoring " software have been installed in inside, its com1 communication port installs a RS232-RS485 signal conversion module, and A, B two lines of its RS485 port are connected with A, B two lines of native system communication port P6.
Described on off control, on off control is by+24V the signal of outside, introduce through P2 terminal, be connected to the negative terminal of a stabilivolt D1, through D1 amplitude limit, export from the anode of D1, be connected to the 1st pin of photoisolator U2, the 2nd pin ground connection of photoisolator U2, through the signal of isolation, export from the 4th pin of photoisolator U2, be connected to the 21st pin of micro controller system U5.
Beneficial effect, owing to have employed such scheme, utilize microelectronics, Microcomputer Technology, install displacement pickup and hydraulic pressure transducer, the circuit card set is in place, on computers " brake clearance monitored control system " upper computer management software is installed, connects signal wire (SW) and power lead, form the monitored control system of a set of Mine lifter brake shoe clearance; Computer screen can show each brake clearance data in real time, hydraulic pressure data; A displacement pickup is installed at each brake shoe place of reel in front end, the displacement of field survey brake shoe movement, according to each brake clearance data, hydraulic pressure data, judge and show the mode of operation of winch: as " RUN ", " brake ", " deceleration " etc., by order wire, result being reached the computing machine of far-end; Hydraulic pressure transducer also will measure hydraulic pressure in real time, pressure data is delivered to far-end computer, and the upper and lower bound of brake clearance, the upper and lower bound of hydraulic pressure and other ginseng setting numbers carry out scene setting, and setting data is stored in computing machine, before amendment next time, remain unchanged.Far-end computer is to the information analysis and judgment received and store these data, computing machine is according to each brake clearance data, hydraulic pressure data, and the characteristic data that circuit card transmits, judge and show the fault such as " transfiniting ", " not opening ", " overvoltage ", " decompression ", " garble ".To any mistake of appearance and the data of fault, report to the police immediately, with the form of sound and light alarm, notify maintainer, go maintenance in time by staff, avoid the generation of severe and great casualty.The brake shoe solving gig is manipulated by hydraulic efficiency pressure system, because certain reason, likely makes brake shoe action malfunctioning, causes the problem of gig fault, reach object of the present invention.
Advantage:
1, upper computer computer adopts industrial computer, and lower computer adopts microcomputer singlechip Based Intelligent Control, has self-checking function, can tackle the various faults that may occur fast, and alarm, guarantees the safety of equipment and personnel, stable and reliable for performance.
2, adopt non-contact displacement transducer, never wornout, long time stability runs.
3, system is by toggle switch, can the number of flexible configuration circuit card and the quantity of sensor, adapts to the requirement of the large mini system of various difference.
4, communicate with remote computer employing Phototube Coupling, improves the antijamming capability of system.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is circuit structure diagram of the present invention.
Fig. 3 is single-chip minimum system figure of the present invention.
Fig. 4 of the present inventionly arranges switch figure.
Fig. 5 is current sampling circuit figure of the present invention.
Fig. 6 of the present invention eight selects an analog switch figure.
Fig. 7 is positive and negative accurate reference electric source diagram of the present invention.
Fig. 8 is Phototube Coupling of the present invention and Computer interface circuit figure.
Fig. 9 is starting or stopping control circuit figure of the present invention.
In figure: 1, single-chip minimum system; 2, switch is set; 3, reference power supply; 4, linear metal sensor; 5, eight an analog switch is selected; 6, Phototube Coupling; 7, communication interface; 8, upper computer computer; 9, on off control.
Detailed description of the invention
Embodiment 1: this brake clearance monitored control system comprises: single-chip minimum system 1, switch 2 is set, reference power supply 3, linear metal sensor 4, eight select an analog switch 5, Phototube Coupling 6, communication interface 7, upper computer computer 8 and on off control 9; Linear metal sensor 4 selects an analog switch 5 to be connected with the input end of single-chip minimum system 1 by eight, arrange switch 2 to be connected with the input end of reference power supply 3 with single-chip minimum system 1, the mouth of single-chip minimum system 1 is connected with upper computer computer 8 by Phototube Coupling 6, communication interface 7, and on off control 9 is connected with single-chip minimum system 1 by Phototube Coupling 6.
In fig. 2, be whole control scheme of the present invention, monitored control system carries linear metal sensor, when monitored control system requires be less than or equal eight road sensors, only just passable with one piece of such circuit card, the data of detection pass through P6 communication interface, are uploaded to upper computer computer.When monitored control system requires more than eight road sensors, can with one or a few such circuit card, every block plank specifies different address number arranging in switch 2 of oneself, and the communication interface of every block plank is all connected in P6 communication interface.
Described single-chip minimum system 1,20th pin of micro controller system U5 connects+5V power supply, the 8th, 19 pin ground connection, and the 9th, 10 pin connect two pin meeting crystal oscillator Y1 respectively, 1st pin connects the electrify restoration circuit be made up of R19 and C25, this completes the connection of single-chip minimum system.
In figure 3, the core of single-chip minimum system is a slice micro controller system, and it forms single-chip minimum system 1 together with crystal oscillator Y1, reset circuit R19, C25 etc.
Described arranges switch 2, arranges switch 2, i.e. S1, has 5 bit switches, one end all ground connection of 5 bit switches, and one end receives 22,23,24,25,26 pin of micro controller system U5 respectively in addition.
In the diagram, the described switch 2 that arranges is the DIP thumb-acting switch being connected to single-chip processor i/o port, has 5, wherein the address number of 2 this block of setting planks, allowed at most 4 pieces of planks in a system, other 3 set the several sensor of this allegro subbands.
Described reference power supply 3, reference power supply has 2 tunnels to export, and wherein the 3rd pin of power module U7 exports reference voltage, is connected to the 5th pin of micro controller system U5, and the negative reference voltage exported by R18 potential device center tap, is connected to the 4th pin of micro controller system U5.
In the figure 7, described reference power supply is positive and negative accurate reference power supply, that micro controller system needs accurate reference power supply 3 when measure analog voltage, it is made up of power module U7 and peripheral circuit, the model of power module U7 is TL431 chip, regulate R17 potential device can change the magnitude of voltage of just reference, under the prerequisite of fixing reference voltage, regulate R18, can change, determine the magnitude of voltage of negative reference.
Described linear metal sensor 4, linear metal sensor is proximity transducer or hydraulic pressure transducer, and proximity transducer or hydraulic pressure transducer are all identical, respectively by P1, P3, P5, P7, P9, P10, P11, P12 totally 8 binding post drawing-in systems; Each sensor has 3 lead-in wires, wherein power supply termination+24V power supply, negativing ending grounding, and the signal of output is 4-20 milliampere electric current, and each road current signal all will flow through the standard resistance of 250 ohm, forms the voltage of 1-5 volt; Eight road signals are connected respectively to 13,14,15,12,1,5,2,4 pin that eight select an analog switch U4, and it is selected altogether.
In Figure 5, it is the current sampling circuit that linear metal sensor 4 is formed, described current sampling circuit has displacement pickup or hydraulic pressure transducer, proximity transducer or hydraulic pressure transducer are all identical, and its operating voltage is all+24V, and output signal is the current signal of 4-20 milliampere, it is 1-7mm that displacement pickup represents measurement clearance, it is 0-60Mp that hydraulic pressure transducer represents gaging pressure, allows this electric current by the accurate sampling resistor of 250 ohm, obtains the voltage of 1V ~ 5V.
Described eight select an analog switch 5, eight select an analog switch U4,16th pin connects+5V power supply, 7th, 8 pin ground connection, 9th, 10,11 pin are channel selecting ends, be connected respectively to the 11st of micro controller system U5 the, 12,13 pin, 8 road input signal cables access the signal output part of 8 linear metal proximity transducers or hydraulic pressure transducer respectively, the mouth of signal is the 3rd pin, and it is connected to the 2nd pin of micro controller system U5.
In figure 6, eight select an analog switch 5 chip used is M74HC4051M1R, and eight road signals from X0 ~ X7 input, are selected through A, B, C address decoding respectively, and wherein a road exports from X end, delivers to the AD conversion input port of micro controller system.
Described Phototube Coupling 6, Phototube Coupling is completed by 2 optocoupler O1, optocoupler O2, optocoupler O1 the 7th, 8 pin connect+5V power supply, 5th pin ground connection, 2nd pin connects the+5V power supply of isolation, and the 6th pin is output signal, connects the 18th pin of micro controller system U5,3rd pin is incoming signal, connects the 1st pin of communication interface chip U3;
2nd pin of optocoupler O2 connects+5V power supply, and the 8th pin connects the+5V power supply of isolation, and the 5th pin connects the ground of isolation.3rd pin is incoming signal, and connect the 17th pin of micro controller system U5, the 6th pin is output signal, connects the 4th pin of communication interface chip U3.
In fig. 8, Phototube Coupling 6 and computer interface 7 part is included.Optocoupler O1 and optocoupler O2 is high speed photo coupling 6N137, realize the transmitting-receiving transmission of data, optocoupler O1 is used for the data transmission of far-end computer to micro controller system, optocoupler O2 is used for the data of micro controller system to be sent to far-end computer, U6 is low speed optocoupler, and for the transmit-receive position of line of setting up serial ports, interface chip is MAX487MJA, it is a slice RS-485 communication dedicated chip, and the differential level signal of the Transistor-Transistor Logic level of micro controller system and far-end computer is changed mutually by it.Its 2 pin 3 pin connects together, and by low speed optocoupler U6, is controlled by micro controller system, and when 2 pin 3 pin are high level, micro controller system distally computing machine transmits data, and during for low level, far-end computer transmits data to micro controller system.
Described communication interface 7, the 8th pin of communication interface chip U3 connects the+5V power supply of isolation, and the 5th pin connects the ground of isolation.1st pin connects the 3rd pin of optocoupler O1 through resistance R7, and the 4th pin connects the 6th pin of optocoupler O2, and the 6th, 7 pin connect the dynamo-electric brain in position.
Described upper computer computer 8, upper computer computer is exactly a Personal Computer, windows and " brake clearance monitoring " software have been installed in inside, its com1 communication port installs a RS232-RS485 signal conversion module, and A, B two lines of its RS485 port are connected with A, B two lines of native system communication port P6.
Described on off control 9, on off control is by+24V the signal of outside, introduce through P2 terminal, be connected to the negative terminal of a stabilivolt D1, through D1 amplitude limit, export from the anode of D1, be connected to the 1st pin of photoisolator U2, the 2nd pin ground connection of U2, through the signal of isolation, export from the 4th pin of U2, be connected to the 21st pin of micro controller system U5.
In fig .9, described starting or stopping control circuit, far-end computer can be arranged on apart from the room within the scope of sensor 1200m.Computing machine adopts industrial computer, and the serial ports of computing machine installs a RS-485/RS-232 modular converter.In computing machine, Wondow-XP system and " brake clearance monitored control system " upper computer management software are installed, click after start and run.
Claims (9)
1. a Mine lifter brake shoe clearance monitored control system, is characterized in that: this monitored control system comprises: single-chip minimum system, switch is set, reference power supply, linear metal sensor, eight select an analog switch, Phototube Coupling, communication interface, upper computer computer and on off control; Linear metal sensor selects an analog switch to be connected with the input end of single-chip minimum system by eight, arrange switch to be connected with the input end of single-chip minimum system with reference power supply, the mouth of single-chip minimum system is connected with upper computer computer by Phototube Coupling, communication interface, and on off control is connected with single-chip minimum system by Phototube Coupling.
2. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described single-chip minimum system, 20th pin of micro controller system U5 connects+5V power supply, 8th, 19 pin ground connection, 9th, 10 pin connect two pin meeting crystal oscillator Y1 respectively, 1st pin connects the electrify restoration circuit be made up of R19 and C25, this completes the connection of single-chip minimum system, 20th pin of described micro controller system U5 is supply pin VDD, 8th and the 19th pin is grounding leg VSS, 9th, 10 pin are crystal oscillator connecting pin OSC1, OSC2, and the 1st pin is resetting pin RST.
3. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described arranges switch, i.e. S1, have 5 bit switches, one end all ground connection of 5 bit switches, one end receives 22,23,24,25,26 pin of micro controller system U5 respectively in addition; 22,23,24,25,26 pin of described micro controller system U5 are all the I/O mouth pins of this micro controller system, are called RB1, RB2, RB3, RB4, RB5 of this micro controller system respectively.
4. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described reference power supply has 2 tunnels to export, 3rd pin of the power module U7 wherein in reference power supply exports reference voltage, be connected to the 5th pin of micro controller system U5, negative reference voltage is exported by R18 potential device center tap, be connected to the 4th pin of micro controller system U5,4th pin of described micro controller system U5 is the negative reference voltage signal input part of the AD converter of micro controller system U5, and the 5th pin of micro controller system U5 is the reference voltage signal input part of Chip Microcomputer A/D conv.
5. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described linear metal sensor is proximity transducer or hydraulic pressure transducer, respectively by P1, P3, P5, P7, P9, P10, P11, P12 totally 8 binding post drawing-in systems; Each sensor has 3 lead-in wires, wherein power supply termination+24V power supply, negativing ending grounding, and the signal of output is 4-20 milliampere electric current, and each road current signal all will flow through the standard resistance of 250 ohm, forms the voltage of 1-5 volt; Eight road signals are connected respectively to 13,14,15,12,1,5,2,4 pin that eight select an analog switch U4, select for it.
6. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described eight select an analog switch, eight select an analog switch U4, 16th pin connects+5V power supply, 7th, 8 pin ground connection, 9th, 10, 11 pin are channel selecting ends, be connected respectively to the 11st of micro controller system U5 the, 12, 13 pin, 8 road input signal cables access the signal output part of 8 linear metal proximity transducers or hydraulic pressure transducer respectively, the mouth of signal is the 3rd pin, it is connected to the 2nd pin of micro controller system U5, the 11st of described micro controller system U5, 12, 13 pin are all the I/O mouth pins of this micro controller system, be called the RC0 of this micro controller system respectively, RC1, RC2, 2nd pin of micro controller system U5 is the input pin of this Chip Microcomputer A/D conv, is called the RA0 of this micro controller system.
7. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described Phototube Coupling comprises optocoupler O1 and optocoupler O2, optocoupler O1 the 7th, 8 pin connect+5V power supply, 5th pin ground connection, 2nd pin connects the+5V power supply of isolation, and the 6th pin is output signal, connects the 18th pin of micro controller system U5,3rd pin is incoming signal, connects the 1st pin of communication interface chip U3;
2nd pin of optocoupler O2 connects+5V power supply, and the 8th pin connects the+5V power supply of isolation, and the 5th pin connects the ground of isolation; 3rd pin is incoming signal, and connect the 17th pin of micro controller system U5, the 6th pin is output signal, connects the 4th pin of communication interface chip U3; Described micro controller system U5 the 17th, 18 pin are serial communication port pins of this micro controller system, the 17th pin, for sending data, is named as RC6/TX; 18th pin, for receiving data, is named as RC7/RX.
8. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described communication interface, + 5V the power supply of the 8th pin of communication interface chip U3 and the isolation of power supply positive input termination, the ground of the 5th pin and the isolation of ground connection termination, 1st pin and signal input part connect the 3rd pin of optocoupler O1 through resistance R7,4th pin and signal input part connect the 6th pin of optocoupler O2, and the 6th, 7 pin and mouth connect the dynamo-electric brain in position; Described upper computer computer is exactly a Personal Computer, windows and " brake clearance monitoring " software have been installed in inside, its com1 communication port installs a RS232-RS485 signal conversion module, and A, B two lines of its RS485 port are connected with A, B two lines of native system communication port P6.
9. a kind of Mine lifter brake shoe clearance monitored control system according to claim 1, it is characterized in that: described on off control is by+24V the signal of outside, introduce through P2 terminal, be connected to the negative terminal of a stabilivolt D1, through stabilivolt D1 amplitude limit, export from the anode of stabilivolt D1, be connected to the 1st pin of photoisolator U2, the 2nd pin ground connection of photoisolator U2, through the signal of isolation, export from the 4th pin of photoisolator U2, be connected to the 21st pin of micro controller system U5; 21st pin of described micro controller system U5 is the I/O mouth pin of this micro controller system, is called the RB0 of this micro controller system.
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| CN201310130054.5A CN103213916B (en) | 2013-04-15 | 2013-04-15 | Brake shoe gap monitoring system for mine hoister |
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| CN201310130054.5A CN103213916B (en) | 2013-04-15 | 2013-04-15 | Brake shoe gap monitoring system for mine hoister |
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