CN107883985A - A kind of heavy scraper conveyor overload on-Line Monitor Device and on-line monitoring method - Google Patents
A kind of heavy scraper conveyor overload on-Line Monitor Device and on-line monitoring method Download PDFInfo
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- CN107883985A CN107883985A CN201710922617.2A CN201710922617A CN107883985A CN 107883985 A CN107883985 A CN 107883985A CN 201710922617 A CN201710922617 A CN 201710922617A CN 107883985 A CN107883985 A CN 107883985A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 265
- 230000010287 polarization Effects 0.000 claims abstract description 125
- 239000000523 sample Substances 0.000 claims abstract description 64
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 238000005065 mining Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008033 biological extinction Effects 0.000 claims description 3
- 230000002427 irreversible effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000011664 signaling Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 6
- 230000005622 photoelectricity Effects 0.000 description 5
- 238000013507 mapping Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
- G01D5/30—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
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- Control Of Conveyors (AREA)
Abstract
The invention discloses a kind of heavy scraper conveyor overload on-Line Monitor Device and on-line monitoring method, the light of wideband light source transmitting is divided into six beams after fiber coupler, respectively successively by corresponding optical fiber circulator, optical fiber is after the line polarizer, enter the sensing probe that corresponding phase electric wire passes through after polarization conjunction accordingly/beam splitter closes beam per two-beam line, after the reflectance coating reflection of sensing probe end after polarization conjunction/beam splitter beam splitting accordingly, again successively by the online polarizer of corresponding optical fiber, enter corresponding photodetector after optical fiber circulator, orthogonal signalling demodulation is carried out to two photodetectors for monitoring in-phase current, realize the monitoring to each phase current, it is achieved thereby that the on-line monitoring whether overloaded to heavy scraper conveyor.Strong antijamming capability, measurement sensitivity height, measurement accuracy and efficiency high of the present invention.
Description
Technical field
The present invention relates to a kind of on-Line Monitor Device and on-line monitoring method, specifically a kind of heavy scraper conveyor overload
On-Line Monitor Device and on-line monitoring method, belong to underground coal mine fully mechanized mining equipment health status monitoring technical field.
Background technology
China has abundant coal resources, and coal is also the major consumers energy and raw material in China, in current and future
Main body energy position will be occupied in one period always.With the progress of Coal Mining Technology, and produce ten-million-ton scale mine per year
High-seam working face develops rapidly, major in order to effectively improve coal mining efficiency, exploitation yield and stoping safety
Type, Oversize Mine, will using well one side or a well two sides, overlength working face, long trend, high working face as main mining type
The daily output reaches more than 30,000 tons, produces per year more than ten million ton and is used as productive target.
Drag conveyor is the prevailing traffic equipment of fully-mechanized mining working, is responsible for the important task of transporting coal, can drag conveyor
Safely, run steadily in the long term and vital influence is suffered from the production efficiency and conevying efficiency of whole fully-mechanized mining working.
In order to meet that " ore deposit, a well, one side " is safe and efficient, produce ten million ton of pit mining needs per year, over ten million ton of heavy type of coal amount
Drag conveyor has become the development trend of domestic and international drag conveyor.
It can be found that because the control of coal amount is uneven in actual progress of coal mining, easily heavy type scratch board is caused to convey
The overload phenomenon of machine, serious load is caused to belt feeder is reprinted, or even slipped after triggering in extreme circumstances and kill phenomenon, to coal
Charcoal mining belt carrys out great potential safety hazard.Therefore, during coal mining, generally special messenger is arranged to monitor heavy type scratch board in switchyard
The operating current situation of change of conveyer, once finding overload situations, notify the staff of fully-mechanized mining working takes to arrange in time
Apply processing.Obviously, there is inefficient, feedback hysteresis in this personal monitoring's means for heavy scraper conveyor overload situations
And the deficiencies of waste of human resource, under intelligent coal mine, unmanned overall background, fully-mechanized mining working needs a kind of having for row badly
The heavy scraper conveyor overload on-line monitoring of effect.
The content of the invention
For problems of the prior art, the present invention provides a kind of heavy scraper conveyor overload on-Line Monitor Device
And on-line monitoring method, without personal monitoring, you can realize heavy scraper conveyor overload on-line monitoring.The anti-interference energy of the present invention
Power is strong, measurement sensitivity is high, measurement accuracy and efficiency high.
To achieve these goals, the technical scheme is that：A kind of heavy scraper conveyor overload on-line monitoring dress
Put, including the online polarizer of wideband light source, fiber coupler, optical fiber circulator, photodetector, optical fiber, polarization conjunction/beam splitter
And sensing probe；
Described wideband light source and the port 20 of fiber coupler connect；The port 21 of described fiber coupler with
The port three of first optical fiber circulator is connected one by one, port two or two is connected with the port 321 of the second optical fiber circulator, port
Two or three are connected with the port 331 of the 3rd optical fiber circulator, the port 341 of the optical fiber circulator of port 24 and the 4th connects
Connect, port two or five is connected with May Day of port three of the 5th optical fiber circulator, the port three of port two or six and six fiberses circulator
61 connections；Port 21, port two or two, port two or three, port two or four, port two or five, port two or six are located at fiber coupler
The same side and relative with port 20；
The port 312 of the first described optical fiber circulator is connected one by one with the port five of the online polarizer of the first optical fiber,
Port 313 is connected with the input of the first photodetector, and the transmission direction of light is port three in the first optical fiber circulator
One by one, port 312, port 313；The port 322 of the second described optical fiber circulator is polarized online with the second optical fiber
The connection of port 521 of device, port 323 are connected with the input of the second photodetector, light in the second optical fiber circulator
The transmission direction of line is port 321, port 322, port 323；The port three or three of the 3rd described optical fiber circulator
Two are connected with the port 531 of the 3rd online polarizer of optical fiber, the input of the photodetector of port 333 and the 3rd connects
Connect, the transmission direction of light is port 331, port 332, port 333 in the 3rd optical fiber circulator；Described
The port 342 of four optical fiber circulators is connected with the port the May 4th one of the 4th online polarizer of optical fiber, port 343 and the 4th
The input connection of photodetector, in the 4th optical fiber circulator the transmission direction of light be port 341, port 342,
Port 343；May Day of port five of the online polarizer of optical fiber of port 352 and the 5th of the 5th described optical fiber circulator connects
Connect, port 353 is connected with the input of the 5th photodetector, in the 5th optical fiber circulator the transmission direction of light for end
Three May Day of mouth, port 352, port 353；The port 362 of described six fiberses circulator is online with six fiberses
The connection of port 561 of the polarizer, port 363 are connected with the input of the 6th photodetector, six fiberses circulator
The transmission direction of interior light is port 361, port 362, port 363；
Described polarization conjunction/beam splitter includes first polarization conjunction/beam splitter, second polarization conjunction/beam splitter, the 3rd polarization
Conjunction/beam splitter, port May Day two with the online polarizer of the first optical fiber one by one of port six of described first polarization conjunction/beam splitter
Connection, port 612 are connected with the port 522 of the online polarizer of the second optical fiber, the sensing probe of port 613 and first
Connection, port six is one by one, port 612 is in the first polarization homonymy of conjunction/beam splitter and relative with port 613；Described
The port 621 of second polarization conjunction/beam splitter is connected with the port 532 of the 3rd online polarizer of optical fiber, port 622
Be connected with the port the May 4th two of the 4th online polarizer of optical fiber, port 623 is connected with the second sensing probe, port 621,
Port 622 is in the second polarization homonymy of conjunction/beam splitter and relative with port 623；The 3rd described polarization conjunction/beam splitter
Port 631 be connected with the port 552 of the 5th online polarizer of optical fiber, port 632 is polarized online with six fiberses
The connection of port 562 of device, port 633 are connected with the 3rd sensing probe, and port 631, port 632 are inclined the 3rd
Shake the homonymy of conjunction/beam splitter and relative with port 633；
Described the first sensing probe, the second sensing probe and the 3rd sensing probe is coated with the circular polarization of reflectance coating by end
Optical fiber coiling is kept to form, the U phase electric wires of heavy scraper conveyor sprocket wheel motor pass perpendicularly through the first sensing probe, heavy
The V phase electric wires of Chain Wheel of Flight Bar Conveyor motor pass perpendicularly through the second sensing probe, heavy scraper conveyor chain wheel drive electricity
The W phase electric wires of machine pass perpendicularly through the 3rd sensing probe.
Further, tail optical fiber, second optical fiber on port May Day two of the described online polarizer of the first optical fiber are polarized online
The tail optical fiber of the port 522 of device, the 3rd online polarizer of optical fiber port 532 tail optical fiber, the 4th online polarizer of optical fiber
The tail optical fiber of port the May 4th two, the tail optical fiber of port 552 of the 5th online polarizer of optical fiber, the online polarizer of six fiberses
The tail optical fiber of port 562, the tail optical fiber of first three ports of polarization conjunction/beam splitter, second polarize three ports of conjunction/beam splitter
Tail optical fiber and the tail optical fiber of the 3rd three ports of polarization conjunction/beam splitter are polarization maintaining optical fibre, and corresponding polarization maintaining optical fibre is equal when being attached
Welding is directed at for slow axis；
Further, the first described optical fiber circulator, the second optical fiber circulator, the 3rd optical fiber circulator, the 4th optical fiber
Circulator, the 5th optical fiber circulator and six fiberses circulator are irreversible three ports single-mode fiber annular device；
Further, described fiber coupler is 1 × 6 single-mode optical-fibre coupler；
Further, the power output of described wideband light source is not less than 10mW；
Further, the described online polarizer of the first optical fiber, the online polarizer of the second optical fiber, the 3rd optical fiber are polarized online
Device, the online polarizer of the 4th optical fiber, the extinction ratio of the online polarizer of the 5th optical fiber and the online polarizer of six fiberses are not less than
30dB；
Further, the first described photodetector, the second photodetector, the 3rd photodetector, the 4th photoelectricity
The bandwidth of detector, the 5th photodetector and the 6th photodetector is not less than 100kHz.
A kind of heavy scraper conveyor overloads on-line monitoring method, comprises the following steps：
1) start heavy scraper conveyor, heavy scraper conveyor sprocket wheel motor is worked in fully-mechanized mining working,
Wideband light source starts output light；The light of wideband light source output enters fiber coupler from port 20 and is divided into six beams,
Wherein：
Enter the first optical fiber circulator one by one from the light that the port 21 of fiber coupler exports from port three and from port
312 outputs, then enter the online polarizer of the first optical fiber one by one from port five and from the polarization light output of port May Day two；
Enter the second optical fiber circulator and from port from the light that the port two or two of fiber coupler exports from port 321
322 outputs, then enter the online polarizer of the second optical fiber and from the polarization light output of port 522 from port 521；
The linearly polarized light exported from port May Day two and the linearly polarized light from the output of port 522 are respectively along port six
One by one with port 612 enter first polarization conjunction/beam splitter, and respectively along port 613 polarization maintaining optical fibre slow axis and
Fast axle exports, and finally enters the first sensing probe；
Enter the 3rd optical fiber circulator and from port from the light that the port two or three of fiber coupler exports from port 331
332 outputs, then enter the online polarizer of the 3rd optical fiber and from the polarization light output of port 532 from port 531；
Enter the 4th optical fiber circulator and from port from the light that the port two or four of fiber coupler exports from port 341
342 outputs, then enter the online polarizer of the 4th optical fiber and from the polarization light output of port the May 4th two from port the May 4th one；
The linearly polarized light exported from port 532 and the linearly polarized light from the output of port the May 4th two are respectively along port six
21 and port 622 enter second polarization conjunction/beam splitter, and respectively along port 623 polarization maintaining optical fibre slow axis and
Fast axle exports, and finally enters the second sensing probe；
Enter the 5th optical fiber circulator and from port from the light that the port two or five of fiber coupler exports from the May Day of port three
352 outputs, then enter the online polarizer of the 5th optical fiber and from the polarization light output of port 552 from the May Day of port five；
Enter six fiberses circulator and from port from the light that the port two or six of fiber coupler exports from port 361
362 outputs, then enter the online polarizer of six fiberses and from the polarization light output of port 562 from port 561；
The linearly polarized light exported from port 552 and the linearly polarized light from the output of port 562 are respectively along port six
31 and port 632 enter the 3rd polarization conjunction/beam splitter, and respectively along port 633 polarization maintaining optical fibre slow axis and
Fast axle exports, and finally enters the 3rd sensing probe；
2) photodetector carries out signal acquisition：
The U phase currents conducting of heavy scraper conveyor sprocket wheel motor produces magnetic field, makes to enter in the first sensing probe
Two bunch polarised lights plane of polarization occur once rotate, reach the first sensing probe circular polarization keep optical fiber connector simultaneously it is anti-
After penetrating film reflection, again return to circular polarization and keep optical fiber and secondary nonreciprocal rotation occurs；The line that secondary rotating occurs for two beams is inclined
The light that shakes returns to first polarization conjunction/beam splitter through port 613 and resolves into orthogonal beams, and respectively from port six one by one and end
Mouth 612 exports；Two beam orthogonal beams return to the online polarizer of the first optical fiber by port May Day two and port 522 respectively
With the online polarizer of the second optical fiber, and respectively from port five one by one with port 521 export；The light exported one by one from port five
Beam enters the first optical fiber circulator from port 312 and output enters the first photodetector from port 313, from port
The light beam of 521 outputs enters the second optical fiber circulator from port 322 and output enters the second photoelectricity from port 323
Detector；
The V phase currents conducting of heavy scraper conveyor sprocket wheel motor produces magnetic field, makes to enter in the second sensing probe
Two bunch polarised lights plane of polarization occur once rotate, reach the second sensing probe circular polarization keep optical fiber connector simultaneously it is anti-
After penetrating film reflection, again return to circular polarization and keep optical fiber and secondary nonreciprocal rotation occurs；The line that secondary rotating occurs for two beams is inclined
The light that shakes returns to second polarization conjunction/beam splitter through port 623 and resolves into orthogonal beams, and respectively from port 621 and end
Mouth 622 exports；Two beam orthogonal beams return to the 3rd online polarizer of optical fiber by port 532 and port the May 4th two respectively
With the 4th online polarizer of optical fiber, and exported respectively from port 531 and port the May 4th one；The light exported from port 531
Beam enters the 3rd optical fiber circulator from port 332 and output enters the 3rd photodetector from port 333, from port
The light beam that the May 4th one exports enters the 4th optical fiber circulator from port 342 and output enters the 4th photoelectricity from port 343
Detector；
The W phase currents conducting of heavy scraper conveyor sprocket wheel motor produces magnetic field, makes to enter in the 3rd sensing probe
Two bunch polarised lights plane of polarization occur once rotate, reach the 3rd sensing probe circular polarization keep optical fiber connector simultaneously it is anti-
After penetrating film reflection, again return to circular polarization and keep optical fiber and secondary nonreciprocal rotation occurs；The line that secondary rotating occurs for two beams is inclined
The light that shakes returns to the 3rd polarization conjunction/beam splitter through port 633 and resolves into orthogonal beams, and respectively from port 631 and end
Mouth 632 exports；Two beam orthogonal beams return to the 5th online polarizer of optical fiber by port 552 and port 562 respectively
With the online polarizer of six fiberses, and exported respectively from the May Day of port five and port 561；From the light of the May Day of port five output
Beam enters the 5th optical fiber circulator from port 352 and output enters the 5th photodetector from port 353, from port
The light beam of 561 outputs enters six fiberses circulator from port 362 and output enters the 6th photoelectricity from port 363
Detector；
3) signal collected is handled：
The signal that first photodetector and the second photodetector collect is input in industrial computer, industrial computer is to two
Individual signal carries out quadrature demodulation processing, obtains the information of the U phase currents of heavy scraper conveyor sprocket wheel motor, realizes counterweight
The monitoring of the U phase currents of type Chain Wheel of Flight Bar Conveyor motor；
The signal that 3rd photodetector and the 4th photodetector collect is input in industrial computer, industrial computer is to two
Individual signal carries out quadrature demodulation processing, obtains the information of the V phase currents of heavy scraper conveyor sprocket wheel motor, realizes counterweight
The monitoring of the V phase currents of type Chain Wheel of Flight Bar Conveyor motor；
The signal that 5th photodetector and the 6th photodetector collect is input in industrial computer, industrial computer is to two
Individual signal carries out quadrature demodulation processing, obtains the information of the W phase currents of heavy scraper conveyor sprocket wheel motor, realizes counterweight
The monitoring of the W phase currents of type Chain Wheel of Flight Bar Conveyor motor.
Compared with prior art, advantages of the present invention has：
(1) each phase electric wire of heavy scraper conveyor sprocket wheel motor is passed through and is coated with reflectance coating by end by the present invention
The sensing probe that circular polarization holding optical fiber coiling forms, every two beams original ray are inclined by the line that optical fiber exports after the line polarizer
The light that shakes enters corresponding sensing probe after polarizing conjunction/beam splitter again, and in the presence of magnetic field caused by wiring harness, line is inclined
The shake polarization direction of light rotates, then returns to optical fiber after the line polarizer by polarization conjunction/beam splitter, into photodetection
Device, orthogonal signalling demodulation is carried out to two corresponding photodetectors, realizes the monitoring to each phase current, it is achieved thereby that
The on-line monitoring whether overloaded to heavy scraper conveyor.
(2) monitoring element of the invention is substantially optical component, avoids the dry of strong-electromagnetic field in fully-mechanized mining working
Disturb, improve monitoring sensitivity, precision posts efficiency, and it is easily operated.
(2) present invention is without personal monitoring, you can the on-line real time monitoring whether overloaded to heavy scraper conveyor is realized,
Reliable guarantee is provided for the health operation of heavy scraper conveyor, heavy scraper conveyor intelligent development is promoted, to carrying
High coal mining conevying efficiency, reduction coal mining cost are significant.
Brief description of the drawings
Fig. 1 is the principle schematic of the present invention；
In figure：1st, wideband light source, 2, fiber coupler, 2-0, port 20,2-1, port 21,2-2, port two or two,
2-3, port two or three, 2-4, port two or four, 2-5, port two or five, 2-6, port two or six, 3-1, the first optical fiber circulator, 3-2,
Two optical fiber circulators, 3-3, the 3rd optical fiber circulator, 3-4, the 4th optical fiber circulator, 3-5, the 5th optical fiber circulator, 3-6,
Six fiberses circulator, 311, port three one by one, 312, port 312,313, port 313,321, port 321,322,
Port 322,323, port 323,331, port 331,332, port 332,333, port 333,341, end
Mouthfuls 341,342, port 342,343, port 343,351, the May Day of port three, 352, port 352,353, port
353,361, port 361,362, port 362,363, port 363,4-1, the first photodetector, 4-2,
Two photodetectors, 4-3, the 3rd photodetector, 4-4, the 4th photodetector, 4-5, the 5th photodetector, 4-6,
Six photodetectors, 5-1, the online polarizer of the first optical fiber, 5-2, the online polarizer of the second optical fiber, 5-3, the 3rd optical fiber rise online
Inclined device, 5-4, the 4th online polarizer of optical fiber, 5-5, the 5th online polarizer of optical fiber, 5-6, the online polarizer of six fiberses,
511st, port five one by one, 512, port May Day two, 521, port 521,522, port 522,531, port 531,
532nd, port 532,541, port the May 4th one, 542, port the May 4th two, 551, the May Day of port five, 552, port 552,
561st, port 561,562, port 562,6-1, first polarization conjunction/beam splitter, 6-2, second polarization conjunction/beam splitter, 6-
3rd, the 3rd polarization conjunction/beam splitter, 611, port six one by one, 612, port 612,613, port 613,621, port six or two
One, 622, port 622,623, port 623,631, port 631,632, port 632,633, port six or three
Three, 7-1, the first sensing probe, 7-2, the second sensing probe, 7-3, the 3rd sensing probe, 8, heavy scraper conveyor sprocket wheel drive
Dynamic motor.
Embodiment
The present invention is further described below in conjunction with accompanying drawing.
As shown in figure 1, a kind of heavy scraper conveyor overload on-Line Monitor Device, including wideband light source 1, fiber coupler
2nd, the online polarizer of optical fiber circulator, photodetector, optical fiber, polarization conjunction/beam splitter and sensing probe；
Described wideband light source 1 is connected with the 2-0 of port 20 of fiber coupler 2；The port of described fiber coupler 2
21 2-1 and the first optical fiber circulator 3-1 port three 311 are connected one by one, the 2-2 of port two or two and the second optical fiber circulator 3-2
Port 321 321 connection, the 2-3 of port two or three be connected with the 3rd optical fiber circulator 3-3 port 331 331, port two
Four 2-4 are connected with the 4th optical fiber circulator 3-4 port 341 341, the 2-5 of port two or five and the 5th optical fiber circulator 3-5
The May Day 351 of port three is connected, the 2-6 of port two or six is connected with six fiberses circulator 3-6 port 361 361；Port 21
2-1, the 2-2 of port two or two, the 2-3 of port two or three, the 2-4 of port two or four, the 2-5 of port two or five, the 2-6 of port two or six are located at fiber coupler
2 the same side is simultaneously relative with the 2-0 of port 20；
The online polarizer 5-1 of optical fiber of port 312 312 and first of the first described optical fiber circulator 3-1 port five
511 connections, port 313 313 are connected with the first photodetector 4-1 input one by one, in the first optical fiber circulator 3-1
The transmission direction of light be port three one by one 311, port 312 312, port 313 313, i.e., it is 311 defeated one by one from port three
The light beam entered is exported from port 312 312, exported from the light beam that port 312 312 inputs from port 313 313；It is described
The second optical fiber circulator 3-2 port 322 322 be connected with the online polarizer 5-2 of the second optical fiber port 521 521,
Port 323 323 is connected with the second photodetector 4-2 input, the transmission side of light in the second optical fiber circulator 3-2
To for port 321 321, port 322 322, port 323 323, i.e., from the light beam that port 321 321 exports from end
The output of mouth 322 322, the light beam from the input of port 322 322 export from port 323 323；The 3rd described fiber optic loop
Shape device 3-3 port 332 332 is connected with the online polarizer 5-3 of the 3rd optical fiber port 531 531, port 333
333 are connected with the 3rd photodetector 4-3 input, and the transmission direction of light is port three in the 3rd optical fiber circulator 3-3
31 331, port 332 332, port 333 333, i.e., the light beam inputted from port 331 331 is from port 332
332 outputs, the light beam from the input of port 332 332 export from port 333 333；The 4th described optical fiber circulator 3-4
Port 342 342 be connected with the online polarizer 5-4 of the 4th optical fiber port the May 4th 1, port 343 343 and the 4th
Photodetector 4-4 input connects, and the transmission direction of light is port 341 341, held in the 4th optical fiber circulator 3-4
Mouthfuls 342 342, port 343 343, i.e., from the light beam that port 341 341 inputs from the output of port 342 342, from end
The light beams of the input of mouth 342 342 export from port 343 343；The port 352 of the 5th described optical fiber circulator 3-5
352 are connected with the online polarizer 5-5 of the 5th optical fiber May Day 551 of port five, the photodetector 4- of port 353 353 and the 5th
5 input connection, in the 5th optical fiber circulator 3-5 the transmission direction of light be the May Day 351 of port three, port 352 352,
Port 353 353, i.e., from the light beam of the May Day 351 of port three input from the output of port 352 352, from port 352 352
The light beam of input exports from port 353 353；The described six fiberses circulator 3-6 light of port 362 362 and the 6th
The fine online polarizer 5-6 connection of port 561 561, the photodetector 4-6 of port 363 363 and the 6th input connect
Connect, the transmission direction of light is port 361 361, port 362 362, port 363 in six fiberses circulator 3-6
363, i.e., the light beam for exporting from the light beam that port 361 361 inputs from port 362 362, being inputted from port 362 362
Exported from port 363 363；
Described polarization conjunction/beam splitter includes first polarization conjunction/beam splitter 6-1, second polarization conjunction/beam splitter 6-2, the 3rd
Conjunction/beam splitter 6-3 is polarized, described first polarization conjunction/beam splitter 6-1 port six 611 is polarized online with the first optical fiber one by one
The device 5-1 connection of port May Day 2 512, the online polarizer 5-2 of optical fiber of port 612 612 and second port 522 522
Connection, port 613 613 are connected with the first sensing probe 7-1, and port six is one by one 611, port 612 612 polarizes first
Conjunction/beam splitter 6-1 homonymy is simultaneously relative with port 613 613；The port six or two of second described polarization conjunction/beam splitter 6-2
One 621 are connected with the online polarizer 5-3 of the 3rd optical fiber port 532 532, port 622 622 is risen online with the 4th optical fiber
The inclined device 5-4 connection of port the May 4th 2 542, port 623 623 are connected with the second sensing probe 7-2, port 621 621,
Port 622 622 is in the second polarization homonymy of conjunction/beam splitter and relative with port 623 623；The 3rd described polarization conjunction/
Beam splitter 6-3 port 631 631 is connected with the online polarizer 5-5 of the 5th optical fiber port 552 552, port 632
632 are connected with the online polarizer 5-6 of six fiberses port 562 562, the sensing probe 7-3 of port 633 633 and the 3rd
Connection, port 631 631, port 632 632 the 3rd polarization conjunction/beam splitter homonymy and with the phase of port 633 633
It is right；
Described the first sensing probe 7-1, the second sensing probe 7-2 and the 3rd sensing probe 7-3 is coated with reflection by end
The circular polarization of film keeps optical fiber coiling to form, and the U phase electric wires of heavy scraper conveyor sprocket wheel motor 8 pass perpendicularly through the first biography
Sense probe 7-1, the V phase electric wires of heavy scraper conveyor sprocket wheel motor 8 pass perpendicularly through the second sensing probe 7-2, and heavy type is scraped
The W phase electric wires of plate conveyor sprocket motor 8 pass perpendicularly through the 3rd sensing probe 7-3.
The online polarizer 5- of tail optical fiber, the second optical fiber on the online polarizer 5-1 of the first described optical fiber port May Day 2 512
The tail optical fiber of 2 port 522 522, tail optical fiber, the 4th optical fiber of the online polarizer 5-3 of the 3rd optical fiber port 532 532 exist
The tail optical fiber of line polarizer 5-4 port the May 4th 2 542, the online polarizer 5-5 of the 5th optical fiber port 552 552 tail optical fiber,
The tail optical fiber of the online polarizer 5-6 of six fiberses port 562 562, the tail of first polarization conjunction/tri- ports of beam splitter 6-1
Fine, second polarization conjunction/ports of beam splitter 6-2 tri- tail optical fiber and the tail optical fiber of the 3rd polarization conjunction/tri- ports of beam splitter 6-3 are
Polarization maintaining optical fibre, corresponding polarization maintaining optical fibre are slow axis alignment welding when being attached.Using polarization maintaining optical fibre, can pass at a distance
When defeated, light beam is kept the state of linearly polarized light, be both easy to carry out location arrangements to monitoring element, and ensure that prison as much as possible
Survey the accuracy of result.
Described the first optical fiber circulator 3-1, the second optical fiber circulator 3-2, the 3rd optical fiber circulator 3-3, the 4th optical fiber
Circulator 3-4, the 5th optical fiber circulator 3-5 and six fiberses circulator 3-6 are irreversible three port single-mode fiber annular
Device, the port number of optical fiber circulator is corresponding with required port number, can meet the performance requirement of device, and can is as much as possible
Save cost.
Described fiber coupler 2 is 1 × 6 single-mode optical-fibre coupler, can save cost, and and can avoids port excessively multipair
Monitoring result has an impact.
The power output of described wideband light source 1 is not less than 10mW；The online polarizer 5-1 of the first described optical fiber, second
The online polarizer 5-2 of optical fiber, the online polarizer 5-3 of the 3rd optical fiber, the online polarizer 5-4 of the 4th optical fiber, the 5th optical fiber rise online
The inclined device 5-5 and online polarizer 5-6 of six fiberses extinction ratio is not less than 30dB；Described the first photodetector 4-1, second
Photodetector 4-2, the 3rd photodetector 4-3, the 4th photodetector 4-4, the 5th photodetector 4-5 and the 6th photoelectricity
Detector 4-6 bandwidth is not less than 100kHz；The installed power of described heavy scraper conveyor sprocket wheel motor 8 is not less than
2400kW.Using the element of above-mentioned technical parameter, obtained monitoring result is more accurate.
A kind of heavy scraper conveyor overloads on-line monitoring method, and step is as follows：
1) start heavy scraper conveyor, heavy scraper conveyor sprocket wheel motor 8 is worked in fully-mechanized mining working,
Wideband light source 1 starts output light；The light that wideband light source 1 exports enters fiber coupler 2 from the 2-0 of port 20 and is divided into
Six beams, wherein：
311 enter the first optical fiber circulator 3- one by one from the light that the 2-1 of port 21 of fiber coupler 2 is exported from port three
1 and exported from port 312 312, then 511 enter the online polarizer 5-1 of the first optical fiber and from port one by one from port five
The polarization light output of May Day 2 512；
The light exported from the 2-2 of port two or two of fiber coupler 2 enters the second optical fiber circulator 3- from port 321 321
2 and exported from port 322 322, then enter the online polarizer 5-2 of the second optical fiber and from port from port 521 521
522 522 polarization light outputs；
From port May Day 2 512 export linearly polarized light and from port 522 522 export linearly polarized light respectively along
The 611 and entrance of the port 612 612 first polarization conjunction/beam splitter 6-1, and respectively along port 613 613 one by one of port six
Polarization maintaining optical fibre slow axis and fast axle output, finally enter the first sensing probe 7-1；
The light exported from the 2-3 of port two or three of fiber coupler 2 enters the 3rd optical fiber circulator 3- from port 331 331
3 and exported from port 332 332, then enter the online polarizer 5-3 of the 3rd optical fiber and from port from port 531 531
532 532 polarization light outputs；
The light exported from the 2-4 of port two or four of fiber coupler 2 enters the 4th optical fiber circulator 3- from port 341 341
4 and exported from port 342 342, then enter the online polarizer 5-4 of the 4th optical fiber and from port from port the May 4th 1
The polarization light output of the May 4th 2 542；
From port 532 532 export linearly polarized light and from port the May 4th 2 542 export linearly polarized light respectively along
Port 621 621 and port 622 622 enter second polarization conjunction/beam splitter 6-2, and respectively along port 623 623
Polarization maintaining optical fibre slow axis and fast axle output, finally enter the second sensing probe 7-2；
The light exported from the 2-5 of port two or five of fiber coupler 2 enters the 5th optical fiber circulator 3- from the May Day 351 of port three
5 and exported from port 352 352, then enter the online polarizer 5-5 of the 5th optical fiber and from port from the May Day 551 of port five
552 552 polarization light outputs；
The light exported from the 2-6 of port two or six of fiber coupler 2 enters six fiberses circulator 3- from port 361 361
6 and exported from port 362 362, then enter the online polarizer 5-6 of six fiberses and from port from port 561 561
562 562 polarization light outputs；
From port 552 552 export linearly polarized light and from port 562 562 export linearly polarized light respectively along
Port 631 631 and port 632 632 enter the 3rd polarization conjunction/beam splitter 6-3, and respectively along port 633 633
Polarization maintaining optical fibre slow axis and fast axle output, finally enter the 3rd sensing probe 7-3；
2) photodetector carries out signal acquisition：
The U phase currents conducting of heavy scraper conveyor sprocket wheel motor 8 produces magnetic field, makes to enter the first sensing probe 7-
The plane of polarization of two bunch polarised lights in 1 occurs once to rotate, and the circular polarization for reaching the first sensing probe 7-1 keeps optical fiber connector
And after being reflected by reflectance coating, again return to circular polarization and keep optical fiber and secondary nonreciprocal rotation occurs；Secondary rotating occurs for two beams
Linearly polarized light return to the first polarization through port 613 613 and conjunction/beam splitter 6-1 and resolve into orthogonal beams, and respectively from end
Mouthfuls six one by one 611 and port 612 612 export；Two beam orthogonal beams pass through port May Day 2 512 and port 522 respectively
522 return the online polarizer 5-1 and online polarizer 5-2 of the second optical fiber of the first optical fiber, and respectively from port five one by one 511 and end
Mouth 521 521 exports；From port five, 511 light beams exported enter the first optical fiber circulator 3- from port 312 312 one by one
1 and output enters the first photodetector 4-1 from port 313 313, from the light beam of the output of port 521 521 from port
322 322 enter the second optical fiber circulator 3-2 and from port 323 323 output enter the second photodetector 4-2；
The V phase currents conducting of heavy scraper conveyor sprocket wheel motor 8 produces magnetic field, makes to enter the second sensing probe 7-
The plane of polarization of two bunch polarised lights in 2 occurs once to rotate, and the circular polarization for reaching the second sensing probe 7-2 keeps optical fiber connector
And after being reflected by reflectance coating, again return to circular polarization and keep optical fiber and secondary nonreciprocal rotation occurs；Secondary rotating occurs for two beams
Linearly polarized light return to the second polarization through port 623 623 and conjunction/beam splitter 6-2 and resolve into orthogonal beams, and respectively from end
Mouth 621 621 and port 622 622 export；Two beam orthogonal beams pass through port 532 532 and port the May 4th two respectively
542 return to the online polarizer 5-3 and online polarizer 5-4 of the 4th optical fiber of the 3rd optical fiber, and respectively from port 531 531 and end
Mouth the May 4th 1 exports；Enter the 3rd optical fiber circulator 3- from the light beam that port 531 531 exports from port 332 332
3 and output enters the 3rd photodetector 4-3 from port 333 333, from the light beam of the output of port the May 4th 1 from port
342 342 enter the 4th optical fiber circulator 3-4 and from port 343 343 output enter the 4th photodetector 4-4；
The W phase currents conducting of heavy scraper conveyor sprocket wheel motor 8 produces magnetic field, makes to enter the 3rd sensing probe 7-
The plane of polarization of two bunch polarised lights in 3 occurs once to rotate, and the circular polarization for reaching the 3rd sensing probe 7-3 keeps optical fiber connector
And after being reflected by reflectance coating, again return to circular polarization and keep optical fiber and secondary nonreciprocal rotation occurs；Secondary rotating occurs for two beams
Linearly polarized light return to the 3rd polarization through port 633 633 and conjunction/beam splitter 6-3 and resolve into orthogonal beams, and respectively from end
Mouth 631 631 and port 632 632 export；Two beam orthogonal beams pass through port 552 552 and port 562 respectively
562 return to the online polarizer 5-5 and online polarizer 5-6 of six fiberses of the 5th optical fiber, and respectively from the May Day 551 of port five and end
Mouth 561 561 exports；Enter the 5th optical fiber circulator 3- from port 352 352 from the light beam of the May Day 551 of port five output
5 and output enters the 5th photodetector 4-5 from port 353 353, from the light beam of the output of port 561 561 from port
362 362 enter six fiberses circulator 3-6 and from port 363 363 output enter the 6th photodetector 4-6；
3) signal collected is handled：
First photodetector 4-1 and the second photodetector 4-2 signal collected are input in industrial computer, industry control
Machine carries out quadrature demodulation processing to two signals (power information for including light), obtains heavy scraper conveyor sprocket wheel motor
The information of 8 U phase currents, realize the monitoring of the U phase currents to heavy Chain Wheel of Flight Bar Conveyor motor 8；
First photodetector 4-1 and the second photodetector 4-2 quadrature demodulated signal and heavy scraper conveyor chain
Mapping relations between the U phase currents of wheel drive motor 8 can be obtained by demarcation and the fitting of least square method data, i.e.,：
The normal operating conditions of experiment lab simulation heavy scraper conveyor sprocket wheel motor 8 measure a series of quadrature demodulated signals with again
The corresponding data of the U phase currents of type Chain Wheel of Flight Bar Conveyor motor 8 simultaneously draw curve, are intended with data such as least square methods
Conjunction method fits proportionality coefficient on the experiment curv drawn, in heavy scraper conveyor real work, you can according to
The the first photodetector 4-1 and the second photodetector 4-2 quadrature demodulated signal measured obtains heavy scraper conveyor chain
The U phase currents of wheel drive motor 8；
3rd photodetector 4-3 and the 4th photodetector the 4-4 signal collected are input in industrial computer, industry control
Machine carries out quadrature demodulation processing to two signals (power information for including light), obtains heavy scraper conveyor sprocket wheel motor
The information of 8 V phase currents, realize the monitoring of the V phase currents to heavy Chain Wheel of Flight Bar Conveyor motor 8；
3rd photodetector 4-3 and the 4th photodetector 4-4 quadrature demodulated signal and heavy scraper conveyor chain
Mapping relations between the V phase currents of wheel drive motor 8 can be obtained by demarcation and the fitting of least square method data, i.e.,：
The normal operating conditions of experiment lab simulation heavy scraper conveyor sprocket wheel motor 8 measure a series of quadrature demodulated signals with again
The corresponding data of the V phase currents of type Chain Wheel of Flight Bar Conveyor motor 8 simultaneously draw curve, are intended with data such as least square methods
Conjunction method fits proportionality coefficient on the experiment curv drawn, in heavy scraper conveyor real work, you can according to
The 3rd photodetector 4-3 and the 4th photodetector 4-4 quadrature demodulated signal measured obtains heavy scraper conveyor chain
The V phase currents of wheel drive motor 8；
5th photodetector 4-5 and the 6th photodetector the 4-6 signal collected are input in industrial computer, industry control
Machine carries out quadrature demodulation processing to two signals (power information for including light), obtains heavy scraper conveyor sprocket wheel motor
The information of 8 W phase currents, realize the monitoring of the W phase currents to heavy Chain Wheel of Flight Bar Conveyor motor 8；
5th photodetector 4-5 and the 6th photodetector 4-6 quadrature demodulated signal and heavy scraper conveyor chain
Mapping relations between the W phase currents of wheel drive motor 8 can be obtained by demarcation and the fitting of least square method data, i.e.,：
The normal operating conditions of experiment lab simulation heavy scraper conveyor sprocket wheel motor 8 measure a series of quadrature demodulated signals with again
The corresponding data of the W phase currents of type Chain Wheel of Flight Bar Conveyor motor 8 simultaneously draw curve, are intended with data such as least square methods
Conjunction method fits proportionality coefficient on the experiment curv drawn, in heavy scraper conveyor real work, you can according to
The 5th photodetector 4-3 and the 6th photodetector 4-4 quadrature demodulated signal measured obtains heavy scraper conveyor chain
The W phase currents of wheel drive motor 8.
According to the method described above, using heavy scraper conveyor overload and the feature of its operating current tight association, by
The operating current of line monitoring heavy scraper conveyor can map the overload situations of heavy scraper conveyor in real time.
Claims (8)
1. a kind of heavy scraper conveyor overloads on-Line Monitor Device, it is characterised in that：Including wideband light source (1), fiber coupling
Device (2), optical fiber circulator, photodetector, the online polarizer of optical fiber, polarization conjunction/beam splitter and sensing probe；
Described wideband light source (1) is connected with the port 20 (2-0) of fiber coupler (2)；Described fiber coupler (2)
The port three of port 21 (2-1) and the first optical fiber circulator (3-1) one by one (311) be connected, port two or two (2-2) and the second light
Port 321 (321) connection of fine circulator (3-2), port two or three (2-3) and the 3rd optical fiber circulator (3-3) port three
31 (331) connection, port two or four (2-4) are connected with the port 341 (341) of the 4th optical fiber circulator (3-4), port two
Five (2-5) are connected with May Day of port three (351) of the 5th optical fiber circulator (3-5), port two or six (2-6) and six fiberses annular
Port 361 (361) connection of device (3-6)；Port 21 (2-1), port two or two (2-2), port two or three (2-3), port two
Four (2-4), port two or five (2-5), port two or six (2-6) be located at the same side of fiber coupler (2) and with port 20 (2-0)
Relatively；
The port 312 (312) of described the first optical fiber circulator (3-1) and the port of the online polarizer of the first optical fiber (5-1)
Five one by one (511) connection, port 313 (313) be connected with the input of the first photodetector (4-1), the first fiber annular
The transmission direction of device (3-1) interior light is port three (311), port 312 (312), port 313 (313) one by one；It is described
The second optical fiber circulator (3-2) port 322 (322) and the online polarizer of the second optical fiber (5-2) port 521
(521) connection, port 323 (323) are connected with the input of the second photodetector (4-2), the second optical fiber circulator (3-
2) transmission direction of light is port 321 (321), port 322 (322), port 323 (323) in；Described
The port 332 (332) of three optical fiber circulators (3-3) and the port 531 (531) of the 3rd online polarizer of optical fiber (5-3)
Connection, port 333 (333) are connected with the input of the 3rd photodetector (4-3), the 3rd optical fiber circulator (3-3) interior light
The transmission direction of line is port 331 (331), port 332 (332), port 333 (333)；The 4th described optical fiber
The port 342 (342) of circulator (3-4) is connected with the port the May 4th one (541) of the 4th online polarizer of optical fiber (5-4), held
343 (343) of mouth are connected with the input of the 4th photodetector (4-4), the biography of the 4th optical fiber circulator (3-4) interior light
Defeated direction is port 341 (341), port 342 (342), port 343 (343)；The 5th described optical fiber circulator
The port 352 (352) of (3-5) is connected with May Day of port five (551) of the 5th online polarizer of optical fiber (5-5), port three or five
Three (353) are connected with the input of the 5th photodetector (4-5), the transmission direction of the 5th optical fiber circulator (3-5) interior light
For May Day of port three (351), port 352 (352), port 353 (353)；Described six fiberses circulator (3-6)
Port 362 (362) is connected with the port 561 (561) of the online polarizer of six fiberses (5-6), port 363 (363)
It is connected with the input of the 6th photodetector (4-6), the transmission direction of six fiberses circulator (3-6) interior light is port three
61 (361), port 362 (362), port 363 (363)；
Described polarization conjunction/beam splitter includes first polarization conjunction/beam splitter (6-1), second polarization conjunction/beam splitter (6-2), the 3rd
Conjunction/beam splitter (6-3) is polarized, (611) exist with the first optical fiber one by one for the port six of described first polarization conjunction/beam splitter (6-1)
Port May Day two (512) connection, port 612 (612) and the online polarizer of the second optical fiber (5-2) of the line polarizer (5-1)
Port 522 (522) connection, port 613 (613) be connected with the first sensing probe (7-1), port six one by one (611), hold
Mouthful 612 (612) are in the homonymy of first polarization conjunction/beam splitter (6-1) and relative with port 613 (613)；Described second
Polarize the port 621 (621) of conjunction/beam splitter (6-2) and the port 532 (532) of the 3rd online polarizer of optical fiber (5-3)
Connection, port 622 (622) are connected with the port the May 4th two (542) of the 4th online polarizer of optical fiber (5-4), port 623
(623) it is connected with the second sensing probe (7-2), port 621 (621), port 622 (622) polarize conjunction/beam splitting second
The homonymy of device is simultaneously relative with port 623 (623)；The port 631 (631) of the 3rd described polarization conjunction/beam splitter (6-3)
Be connected with the port 552 (552) of the 5th online polarizer of optical fiber (5-5), port 632 (632) and six fiberses it is online
Port 562 (562) connection of the polarizer (5-6), port 633 (633) are connected with the 3rd sensing probe (7-3), port
631 (631), port 632 (632) are in the homonymy of the 3rd polarization conjunction/beam splitter and relative with port 633 (633)；
Described the first sensing probe (7-1), the second sensing probe (7-2) and the 3rd sensing probe (7-3) is coated with instead by end
The circular polarization for penetrating film keeps optical fiber coiling to form, and the U phase electric wires of heavy scraper conveyor sprocket wheel motor (8) pass perpendicularly through the
One sensing probe (7-1), the V phase electric wires of heavy scraper conveyor sprocket wheel motor (8) pass perpendicularly through the second sensing probe (7-
2), the W phase electric wires of heavy scraper conveyor sprocket wheel motor (8) pass perpendicularly through the 3rd sensing probe (7-3).
2. a kind of heavy scraper conveyor overload on-Line Monitor Device according to claim 1, it is characterized in that：Described
The tail optical fiber on port May Day two (512) of the online polarizer of one optical fiber (5-1), the port five of the online polarizer of the second optical fiber (5-2)
The tail optical fiber of two or two (522), tail optical fiber, the 4th optical fiber of port 532 (532) of the 3rd online polarizer of optical fiber (5-3) rise online
The tail optical fiber of the port the May 4th two (542) of inclined device (5-4), the tail of the port 552 (552) of the 5th online polarizer of optical fiber (5-5)
The tail optical fiber of fine, the online polarizer of six fiberses (5-6) port 562 (562), first polarization conjunction/beam splitter (6-1) three
Three tail optical fiber of port, the tail optical fiber of second polarization conjunction/beam splitter (6-2) three ports and the 3rd polarization conjunction/beam splitter (6-3) ends
The tail optical fiber of mouth is polarization maintaining optical fibre, and corresponding polarization maintaining optical fibre is slow axis alignment welding when being attached.
3. a kind of heavy scraper conveyor overload on-Line Monitor Device according to claim 1 or 2, it is characterized in that：It is described
The first optical fiber circulator (3-1), the second optical fiber circulator (3-2), the 3rd optical fiber circulator (3-3), the 4th optical fiber circulator
(3-4), the 5th optical fiber circulator (3-5) and six fiberses circulator (3-6) are irreversible three port single-mode fiber annular
Device.
4. a kind of heavy scraper conveyor overload on-Line Monitor Device according to claim 3, it is characterized in that：Described light
Fine coupler (2) is 1 × 6 single-mode optical-fibre coupler.
5. a kind of heavy scraper conveyor overload on-Line Monitor Device according to claim 4, it is characterized in that：Described width
Power output with light source (1) is not less than 10mW.
6. a kind of heavy scraper conveyor overload on-Line Monitor Device according to claim 5, it is characterized in that：Described
The online polarizer of one optical fiber (5-1), the online polarizer of the second optical fiber (5-2), the 3rd online polarizer of optical fiber (5-3), the 4th light
The extinction ratio of the fine online polarizer (5-4), the 5th online polarizer of optical fiber (5-5) and the online polarizer of six fiberses (5-6) is not
Less than 30dB.
7. a kind of heavy scraper conveyor overload on-Line Monitor Device according to claim 6, it is characterized in that：Described
One photodetector (4-1), the second photodetector (4-2), the 3rd photodetector (4-3), the 4th photodetector (4-
4), the bandwidth of the 5th photodetector (4-5) and the 6th photodetector (4-6) is not less than 100kHz.
8. a kind of heavy scraper conveyor overloads on-line monitoring method, it is characterised in that comprises the following steps：
1) start heavy scraper conveyor, heavy scraper conveyor sprocket wheel motor (8) is worked in fully-mechanized mining working, it is wide
Band light source (1) starts output light；The light of wideband light source (1) output enters fiber coupler (2) and quilt from port 20 (2-0)
Six beams are divided into, wherein：
From port three, (311) enter the first optical fiber circulator to the light exported from the port 21 (2-1) of fiber coupler (2) one by one
(3-1) and exported from port 312 (312), then from port five, (511) enter the online polarizer (5- of the first optical fiber one by one
1) and from port May Day two (512) polarization light output；
The light exported from the port two or two (2-2) of fiber coupler (2) enters the second optical fiber circulator from port 321 (321)
(3-2) and exported from port 322 (322), then enter the online polarizer (5- of the second optical fiber from port 521 (521)
2) and from port 522 (522) polarization light output；
From port May Day two (512) output linearly polarized light and from port 522 (522) output linearly polarized light respectively along
(611) and port 612 (612) enter first polarization conjunction/beam splitter (6-1) one by one for port six, and respectively along port 61
Slow axis and the fast axle output of the polarization maintaining optical fibre of three (613), finally enter the first sensing probe (7-1)；
The light exported from the port two or three (2-3) of fiber coupler (2) enters the 3rd optical fiber circulator from port 331 (331)
(3-3) and exported from port 332 (332), then enter the online polarizer (5- of the 3rd optical fiber from port 531 (531)
3) and from port 532 (532) polarization light output；
The light exported from the port two or four (2-4) of fiber coupler (2) enters the 4th optical fiber circulator from port 341 (341)
(3-4) and exported from port 342 (342), then enter the online polarizer (5- of the 4th optical fiber from port the May 4th one (541)
4) and from port the May 4th two (542) polarization light output；
From port 532 (532) output linearly polarized light and from port the May 4th two (542) output linearly polarized light respectively along
Port 621 (621) and port 622 (622) enter second polarization conjunction/beam splitter (6-2), and respectively along port six or two
Slow axis and the fast axle output of the polarization maintaining optical fibre of three (623), finally enter the second sensing probe (7-2)；
The light exported from the port two or five (2-5) of fiber coupler (2) enters the 5th optical fiber circulator from May Day of port three (351)
(3-5) and exported from port 352 (352), then enter the online polarizer (5- of the 5th optical fiber from May Day of port five (551)
5) and from port 552 (552) polarization light output；
The light exported from the port two or six (2-6) of fiber coupler (2) enters six fiberses circulator from port 361 (361)
(3-6) and exported from port 362 (362), then enter the online polarizer (5- of six fiberses from port 561 (561)
6) and from port 562 (562) polarization light output；
From port 552 (552) output linearly polarized light and from port 562 (562) output linearly polarized light respectively along
Port 631 (631) and port 632 (632) enter the 3rd polarization conjunction/beam splitter (6-3), and respectively along port six or three
Slow axis and the fast axle output of the polarization maintaining optical fibre of three (633), finally enter the 3rd sensing probe (7-3)；
2) photodetector carries out signal acquisition：
The U phase currents conducting of heavy scraper conveyor sprocket wheel motor (8) produces magnetic field, makes to enter the first sensing probe (7-
1) plane of polarization of two bunch polarised lights in occurs once to rotate, and the circular polarization for reaching the first sensing probe (7-1) keeps optical fiber
End and after being reflected by reflectance coating, again returns to circular polarization and keeps optical fiber and secondary nonreciprocal rotation occurs；Two beams occur secondary
The linearly polarized light of rotation returns to first polarization conjunction/beam splitter (6-1) through port 613 (613) and resolves into orthogonal beams, and
Respectively from (611) and port 612 (612) output one by one of port six；Two beam orthogonal beams pass through port May Day two respectively
(512) and port 522 (522) returns to the online polarizer of the first optical fiber (5-1) and the online polarizer of the second optical fiber (5-2), and
Respectively from (511) and port 521 (521) output one by one of port five；From the light beam of (511) output one by one of port five from port
312 (312) enter the first optical fiber circulator (3-1) and output enters the first photodetector from port 313 (313)
(4-1), enter the second optical fiber circulator (3-2), simultaneously from port 322 (322) from the light beam of port 521 (521) output
From port 323 (323), output enters the second photodetector (4-2)；
The V phase currents conducting of heavy scraper conveyor sprocket wheel motor (8) produces magnetic field, makes to enter the second sensing probe (7-
2) plane of polarization of two bunch polarised lights in occurs once to rotate, and the circular polarization for reaching the second sensing probe (7-2) keeps optical fiber
End and after being reflected by reflectance coating, again returns to circular polarization and keeps optical fiber and secondary nonreciprocal rotation occurs；Two beams occur secondary
The linearly polarized light of rotation returns to second polarization conjunction/beam splitter (6-2) through port 623 (623) and resolves into orthogonal beams, and
Exported respectively from port 621 (621) and port 622 (622)；Two beam orthogonal beams pass through port 532 respectively
(532) and port the May 4th two (542) returns to the 3rd online polarizer of optical fiber (5-3) and the 4th online polarizer of optical fiber (5-4), and
Exported respectively from port 531 (531) and port the May 4th one (541)；From the light beam of port 531 (531) output from port
332 (332) enter the 3rd optical fiber circulator (3-3) and output enters the 3rd photodetector from port 333 (333)
(4-3), enter the 4th optical fiber circulator (3-4), simultaneously from port 342 (342) from the light beam of port the May 4th one (541) output
From port 343 (343), output enters the 4th photodetector (4-4)；
The W phase currents conducting of heavy scraper conveyor sprocket wheel motor (8) produces magnetic field, makes to enter the 3rd sensing probe (7-
3) plane of polarization of two bunch polarised lights in occurs once to rotate, and the circular polarization for reaching the 3rd sensing probe (7-3) keeps optical fiber
End and after being reflected by reflectance coating, again returns to circular polarization and keeps optical fiber and secondary nonreciprocal rotation occurs；Two beams occur secondary
The linearly polarized light of rotation returns to the 3rd polarization conjunction/beam splitter (6-3) through port 633 (633) and resolves into orthogonal beams, and
Exported respectively from port 631 (631) and port 632 (632)；Two beam orthogonal beams pass through port 552 respectively
(552) and port 562 (562) returns to the 5th online polarizer of optical fiber (5-5) and the online polarizer of six fiberses (5-6), and
Exported respectively from May Day of port five (551) and port 561 (561)；From the light beam of May Day of port five (551) output from port
352 (352) enter the 5th optical fiber circulator (3-5) and output enters the 5th photodetector from port 353 (353)
(4-5), enter six fiberses circulator (3-6), simultaneously from port 362 (362) from the light beam of port 561 (561) output
From port 363 (363), output enters the 6th photodetector (4-6)；
3) signal collected is handled：
The signal that first photodetector (4-1) and the second photodetector (4-2) collect is input in industrial computer, industry control
Machine carries out quadrature demodulation processing to two signals, obtains the letter of the U phase currents of heavy scraper conveyor sprocket wheel motor (8)
Breath, realizes the monitoring of the U phase currents to heavy Chain Wheel of Flight Bar Conveyor motor (8)；
The signal that 3rd photodetector (4-3) and the 4th photodetector (4-4) collect is input in industrial computer, industry control
Machine carries out quadrature demodulation processing to two signals, obtains the letter of the V phase currents of heavy scraper conveyor sprocket wheel motor (8)
Breath, realizes the monitoring of the V phase currents to heavy Chain Wheel of Flight Bar Conveyor motor (8)；
The signal that 5th photodetector (4-5) and the 6th photodetector (4-6) collect is input in industrial computer, industry control
Machine carries out quadrature demodulation processing to two signals, obtains the letter of the W phase currents of heavy scraper conveyor sprocket wheel motor (8)
Breath, realizes the monitoring of the W phase currents to heavy Chain Wheel of Flight Bar Conveyor motor (8).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11402196B2 (en) * | 2020-01-09 | 2022-08-02 | China University Of Mining And Technology | Device and method for distributed detection of straightness of working face of scraper conveyor based on optical fiber sensing |
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