CN102765592A - Safety protection system with function of preventing belt conveyor from hurting people for coal preparation plant - Google Patents
Safety protection system with function of preventing belt conveyor from hurting people for coal preparation plant Download PDFInfo
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- CN102765592A CN102765592A CN2012102592809A CN201210259280A CN102765592A CN 102765592 A CN102765592 A CN 102765592A CN 2012102592809 A CN2012102592809 A CN 2012102592809A CN 201210259280 A CN201210259280 A CN 201210259280A CN 102765592 A CN102765592 A CN 102765592A
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Abstract
The invention particularly relates to a safety protection system with function of preventing belt conveyor from hurting people for a coal preparation plant. The safety protection system solves the problem that an existing protection device of a belt conveyor cannot effectively protect people from being hurt by the belt conveyor. An alternating current power supply is connected with a power transformer which is connected with a central processing unit and a power tube respectively, the power tube is connected with a direct current port which is connected with a headpiece, a tail, a tail detector and an audible and visual alarm respectively, the headpiece, the tail and the tail detector are all connected with the central processing unit, a keyboard is connected with the central processing unit connected with the audible and visual alarm and a voltage comparator, the voltage comparator is connected with a PLC (programmable logic controller) port of a concentrated control center, and an emergency button is connected with the central processing unit. The safety protection system with function of preventing belt conveyor from hurting people for the coal preparation plant is reasonable and reliable in structure, can realize spot alarming and shutdown protection, and degree of automation of monitoring protection of the belt conveyor is improved.
Description
Technical field
The present invention relates to the colliery and use safety system, be specially a kind of coal preparation plant and prevent the travelling apron safety system of hurting sb.'s feelings.
Background technology
In the numerous coal preparation plants of China, use travelling apron to carry out the transportation of coal mostly, aborning, sideslip can appear in travelling apron, skid, tear and turning unit various accidents such as hurt sb.'s feelings.Along with the raising of mine capacity and coal preparation plant's processing capacity, or, bring certain difficulty to production safety management based on the tight many pressure influence of production task.In order to guarantee the safe operation of coal preparation plant, travelling apron all is provided with longitudinal tear, anti-deviation, temperature, skids, the anxious safety guard such as backguy that stops along the line.Yet; The safety misadventure that travelling apron is hurted sb.'s feelings repeatedly takes place in long-term operational process; Especially the staff is on night shift to feel sleepy and causes under the vigilant situation not high or that factory building intrinsic fog vapour is heavier, visbility is lower in the winter time; Damaged by rotation positions such as the head of travelling apron and tail and changed course cylinders, the staff below rooting out travelling apron in the coal breakage process, the accident that causes the travelling apron movable parts to be hurted sb.'s feelings.
Summary of the invention
The problem that the present invention can not effectively avoid casualty accident to take place for the fender guard that solves existing travelling apron provides a kind of coal preparation plant to prevent the travelling apron safety system of hurting sb.'s feelings.
The present invention adopts following technical scheme to realize: coal preparation plant prevents the travelling apron safety system of hurting sb.'s feelings; Fuselage detector and the travelling apron that comprise central process unit, is fixed on travelling apron corridor one side be head detector and tail detector, keyboard, combined aural and visual alarm, collection control center P LC interface, source of AC, direct current (DC) interface, supply transformer, rectification module, power tube, the signal processor of portion end to end, tightly stops button, relay II, relay I;
Source of AC links to each other with the input end of supply transformer; The mouth of supply transformer links to each other with the input end of central process unit and power tube respectively through rectification module; The mouth of power tube links to each other with the direct current (DC) interface; The direct current (DC) interface links to each other with the power end of head detector, tail detector, fuselage detector, combined aural and visual alarm respectively; The mouth of head detector, tail detector, fuselage detector all links to each other with the input end of central process unit through signal processor; The mouth of keyboard links to each other with the input end of central process unit, and the mouth of central process unit links to each other with the input end of combined aural and visual alarm through the relay II, and the mouth of central process unit links to each other with the input end of voltage comparator; The mouth of voltage comparator links to each other with collection control center P LC interface through photoelectrical coupler, relay I, tightly stops button and links to each other with central process unit.
During operation, source of AC through supply transformer, rectification module output direct current 5V voltage, is used for supplying power to central process unit successively.Simultaneously, direct current 5V voltage amplifies back output direct current 12V voltage through power tube, is used for to head detector, tail detector, fuselage detector, combined aural and visual alarm power supply.As the people during near travelling apron; Head detector, tail detector, fuselage detector detect the people; And sending detection signal to central process unit through signal processor, central process unit is according to the detection signal output control signal and the alerting signal that receive.Control signal transfers to collection control center P LC interface through voltage comparator, photoelectrical coupler, relay I successively, then through collection control center P LC interface control external device.Alerting signal transfers to combined aural and visual alarm through voltage comparator, photoelectrical coupler, relay I successively, sends sound and light alarm.The fender guard that has overcome existing travelling apron can not effectively be avoided the problem of casualty accident generation.
The fuselage detector adopts initiatively correlation infrared detector of ABT-80; Head detector and tail detector adopt DT-450T passive infrared heat to discharge detector; Central process unit adopts YK-AL8/16 intelligent alarm main frame; Combined aural and visual alarm adopts compound type SJ-2 combined aural and visual alarm, has improved the compatible performance of whole protecting system, more stable satisfied protection requirement.
The fuselage detector is arranged three groups along the adhesive tape service direction; And the projector in every group of fuselage detector and the spacing of receptor are respectively 58m, 60m, 64m; The fuselage detector is for producing the detector of three beams infrared light; And the spacing of infrared light is 13cm, and the projector of fuselage detector and receptor ground clearance are respectively 25cm, 50cm; The head detector is horizontally disposed with two; And the angle of radiation of head detector is more than or equal to 130 °; And the radiation radius of curvature of joint detector is 5.13-6.26m; The height of tail detector is 2.2m, and fuselage, head and the setting of tail position of detector draw through test of many times, realizes effectively all deploying troops on garrison duty around the travelling apron.
Reasonable in design of the present invention is reliable; Get into drive disk assembly position radius of curvature size and time length through gathering human body; Or human body blocks the infrared ray situation, and detection signal is transferred to host computer system, carries out onsite alarming, stoppage protection; And through with connecting with comprehensive protector (or collection control center); The realization belt conveyer is protected integrated function, improves sealing-tape machine monitoring and protecting degree of automation, and the work that is applied to different manufacturing line travelling aprons and other hazardous area of enterprise is kept watch on.
Description of drawings
Fig. 1 is a structure principle chart of the present invention.
The specific embodiment
Coal preparation plant prevents the travelling apron safety system of hurting sb.'s feelings; Comprise central process unit, be fixed on travelling apron corridor one side the fuselage detector, be fixed on travelling apron head detector and tail detector, keyboard, combined aural and visual alarm, collection control center P LC interface, source of AC, direct current (DC) interface, supply transformer, rectification module, power tube, the signal processor of portion end to end, tightly stop button, relay II, relay I;
Source of AC links to each other with the input end of supply transformer; The mouth of supply transformer links to each other with the input end of central process unit and power tube respectively through rectification module; The mouth of power tube links to each other with the direct current (DC) interface; The direct current (DC) interface links to each other with the power end of head detector, tail detector, fuselage detector, combined aural and visual alarm respectively; The mouth of head detector, tail detector, fuselage detector all links to each other with the input end of central process unit through signal processor; The mouth of keyboard links to each other with the input end of central process unit, and the mouth of central process unit links to each other with the input end of combined aural and visual alarm through the relay II, and the mouth of central process unit links to each other with the input end of voltage comparator; The mouth of voltage comparator links to each other with collection control center P LC interface through photoelectrical coupler, relay I, tightly stops button and links to each other with central process unit.
The fuselage detector adopts initiatively correlation infrared detector of ABT-80; Head detector and tail detector adopt DT-450T passive infrared heat to discharge detector; Central process unit adopts YK-AL8/16 intelligent alarm main frame, and combined aural and visual alarm adopts compound type SJ-2 combined aural and visual alarm; The fuselage detector is arranged three groups along the adhesive tape service direction; And the projector in every group of fuselage detector and the spacing of receptor are respectively 58m, 60m, 64m; The fuselage detector is for producing the detector of three beams infrared light; And the spacing of infrared light is 13cm, and the projector of fuselage detector and receptor ground clearance are respectively 25cm, 50cm; The head detector is horizontally disposed with two, and the angle of radiation of head detector is more than or equal to 130 °, and the radiation radius of curvature of joint detector is 5.13-6.26m, and the height of tail detector is 2.2m.
Central process unit adopts advanced microprocessing; Selection with the AT89C51 micro controller system be core processor formed be used for industrial site on-site supervision device, treater has built-in computing machine " house dog " circuit, and the running condition of system itself is monitored; The stability and the reliability of system have been improved greatly; All adopt photoelectricity to isolate between input/output signal and the micro controller system, the Sensor Analog Relay System incoming signal is the current signal of 4～20mA, and adopts the A/D converter ADC0809 of technology maturation to change; Power supply has adopted the Switching Power Supply isolation module of good in anti-interference performance, and incoming signal has been carried out software filtering.
Head detector, tail detector and fuselage detector acquired signal are given central process unit, export collection control center P LC interface after the judgment processing and join, and the implementation accident back warning, monitoring outage and microcomputer picture takes place shows; System directly joins with travelling apron 10kv electric power distribution cabinet control port, and switch trip afterwards takes place implementation accident in case of necessity.
Danger button is used under some particular case, and manual operation is implemented to report to the police or shut down.
Combined aural and visual alarm adopts the integral type combined aural and visual alarm, and the alarm sound decibel can satisfy on-the-spot noise jamming.
Passive infrared heat discharges detector and is meant that detector itself does not send any type of energy, just is abutted against receipts realm of nature energy or energy changing and accomplishes the detection purpose.The pyroelectricity element is that infrared radiation about 10 μ m is very responsive to wavelength.Because human body is mostly at 37 ° of C, the infrared radiation wavelength that produces is 3～50 μ m, and wherein 8～14 μ m account for 46%, and peak wavelength 9.5 μ m are so passive infrared heat is released infrared probe and is applicable to human body detection.For guaranteeing the sensitive for infrared radiation to human body, showing up in its radiation is coated with special Fei Nier filter usually, makes the interference of environment receive the obvious control effect.The thermoelectric unit of detector in-to-in is made up of cooperation filter glass windows such as the ferrotitanium lead plumbate mercury pottery of high Seebeck coefficient and lithium tantalate, sulfuric acid three Gan Tie, and its polarization changes with variation of temperature.
For the interference that suppresses to produce because of self temperature traverse; Passive infrared heat discharges detector thermoelectric first differential concatenation that two characteristics are consistent or be connected into the differential balance circuit mode on technology; Thereby can go out the infrared energy variation that object is emitted, and be converted into electric signal output with non-contact detection.Because the output of thermoelectric unit is charge signal, can not directly use, thereby need be converted into voltage form with high resistance, accomplishes the impedance conversion so the N channel junction field-effect pipe of structurally introducing is connected into common leakage form.Pyroelectric infrared sensor is made up of sensor measuring unit, interferometric filter and FET adaptation three parts.Infrared circuit mainly is made up of infrared pickoff and detection amplifying circuit.The core parts of infrared circuit are infrared pickoffs, and it can change with the infrared energy that noncontact form human body gives off, and this variation is converted into voltage signal output.In order to detect mobile human body, adopt two (or four) element type pyroelectric infrared sensors.At this sensor internal; Adopt two end instr anti-phase series connection; Because the end instr output voltage is atomic weak and its impedance is high, thus FET and biasing thick film resistors be provided with at sensor internal, thus constitute signal amplification and impedance inverter circuit; General pyroelectric infrared sensor self receiving sensitivity is lower, detects distance only about 2m.In order to improve detection sensitivity and frequency response speed, before sensor, disposed Fresnel Lenses, effective detection distance is reached about 12m.
The characteristics that dual-element type passive infrared heat discharges detector are when projectile energy sequentially is mapped on two end insties; Its output exceeds one times than unit piece, because two elements is reverse series connection, can cancel out each other for the energy of input simultaneously; Can prevent the misoperation that infrared rays such as the sun or lamp holder cause; It can also prevent the detection error that causes because of temperature traverse, and the two elements degree of polarization is identical in the time of in human body is still in scope to be detected, cancels each other; Move but work as human body, when desire passed in and out in the scope to be detected, the two elements degree of polarization was different, and clean output voltage is not 0, thereby had reached the purpose of surveying mobile human body.
Fresnel lens is processed according to Fresnel principle, is divided into visible range and blind area to IR, and the effect of focusing is arranged again simultaneously, and pyroelectricity human-body infrared sensing device (PIR) sensitivity is increased greatly.Fresnel Lenses is a kind of optical system of precision, is specially to be used for and the supporting use of pyroelectric infrared sensor.
Initiatively the correlation infrared detector is also referred to as opto-electronic pickup or photoelectric switch.The infrarede emitting diode (like SE303PH303) that the infrared emission circuit adopts, its profile is similar with LED, send infrared light (the about 0.93p of near infrared ray, m).Tube voltage drop is about l.4V, and working current is generally less than 20mA.In order to adapt to different operating voltages, normal string has current-limiting resistance in the loop.According to the requirement size that system adjusts the distance, can select the different capacity infrared transmitting tube.
Initiatively the basic structure of correlation infrared detector comprises sight hole, beam intensity indicator lamp, spheric glass, LED light etc.Its detecting principle is to utilize infrared ray through LED infrared light emission diode; Doing to focus on to handle through optical mirror plane again makes light reach great distances; Receive after the circuit amplification ratio than the rear drive relay, will give the alarm when being interdicted when two bundles and with glazed thread by receiving end.Infrared ray is a kind of black light, and can spread, and throws away to form the cone light beam.Infrared light was not intermittently sent out 1000 light beams in one second, so be the pulsating infrared beam.
, interdict sightless infrared light beam and cause alarm when crossing the monitoring guard plot as the people.Block grating radical reflection human body according to human body and go deep into adhesive tape frame lower state, and output alarm signal.
According to the physical property of infrared transmitting tube itself, must have carrier signal and the signal that is about to emission mutually " with ", then with phase " with " after signal send power valve, the emission that just can carry out infrared signal transmits.The design adopts infrared transtation mission circuit to be made up of 4001MOS joint denial gate oscillator etc.
Infrared remote receiver adopts integrated module SM0038, and the conversion of its light harvesting electricity is separated to be in harmonious proportion and amplified in one.When receiving when modulated infrared, SM0038 is output as " 0 ", is output as " 1 " at ordinary times.
OUT connects the input port of micro controller system, triggers the monolithic main frame and produces interruption, makes the monolithic main frame get into mode of operation, delivers to the alarm display circuit.GND ground connection, VCC connects high level.
In sum, in view of the burnt electric type motion sensor of human detection, detect for human body " mild action ".Fine motion detects being standard apart from sensor 2m.Standard form detects about 30cm; The fine motion type detects the action of about 20cm.
For preventing the influence of surrounding environment to detector, detector self is provided with temperature compensating and photosensitive adjustment function.
For avoiding the detector radiation scope influenced by shell, the correlation active detector is respectively equipped with the machine glass cover in the front, and the one, do not influence the infrared light correlation, reduce impaired simultaneously or the coal dust intrusion; Useful silica gel sealing between plexiglass tent and metal case adopts cable turnover line.
Passive infrared heat discharges detector and selects the infrared two mirror microwave sounding technology of DT-450T for use, and autompulse is regulated, temperature compensating; Adopt the dsp chip of the band patent frequency modulation tracking technique algorithm of independent development, have be suitable for heat-resisting, shock resistance; The ABS shell of the polycarbonate (polyester) that flame retardance is excellent, the totally-enclosed design of circuit and optical lens, comprehensive auto thermal compensation; Multistage optional for user's sensitivity; Can carry out outstanding filtration for sunshine and white light, self have the waterproof and dustproof performance, meet the IP65 standard.
Central process unit is selected YK-AL8/16 intelligent alarm main frame for use, adopts the microprocessing of AT89C51 micro controller system for the control core, and integrated level is high; Good reliability has multiple flexible interface, can store 6 group alarm numbers simultaneously; Can transmit alarm message through multiple communication network, easy and simple to handle.For preventing the inoperative personnel operation, shell adds the special switch lock.
Native system is provided with the head detection alarm time and is not more than 60s; The fuselage outer side detection alarm time is not less than 5s; The inboard detection alarm time of fuselage is not more than 5s; During system alarm, after personnel left detection zone, system was 3s post-set time, and for preventing to receive the ectocine misoperation, being provided with and getting into delay time is 0.5s.Because every group of detector sends and receives the three beams IR, when personnel are blocked two of outside groups and two above infrared rays, detector protection action, the sound and light alarm signal is sent at the scene, reminds the staff to note; When personnel are blocked two of inboard groups and two above infrared rays, detector protection action, the scene is sent sound and light alarm and is carried out stoppage protection.
Claims (3)
1. a coal preparation plant prevents the travelling apron safety system of hurting sb.'s feelings; It is characterized in that: comprise central process unit, be fixed on travelling apron corridor one side the fuselage detector, be fixed on travelling apron head detector and tail detector, keyboard, combined aural and visual alarm, collection control center P LC interface, source of AC, direct current (DC) interface, supply transformer, rectification module, power tube, the signal processor of portion end to end, tightly stop button, relay II, relay I;
Source of AC links to each other with the input end of supply transformer; The mouth of supply transformer links to each other with the input end of central process unit and power tube respectively through rectification module; The mouth of power tube links to each other with the direct current (DC) interface; The direct current (DC) interface links to each other with the power end of head detector, tail detector, fuselage detector, combined aural and visual alarm respectively; The mouth of head detector, tail detector, fuselage detector all links to each other with the input end of central process unit through signal processor; The mouth of keyboard links to each other with the input end of central process unit, and the mouth of central process unit links to each other with the input end of combined aural and visual alarm through the relay II, and the mouth of central process unit links to each other with the input end of voltage comparator; The mouth of voltage comparator links to each other with collection control center P LC interface through photoelectrical coupler, relay I, tightly stops button and links to each other with central process unit.
2. coal preparation plant according to claim 1 prevents the travelling apron safety system of hurting sb.'s feelings; It is characterized in that: the fuselage detector adopts initiatively correlation infrared detector of ABT-80; Head detector and tail detector adopt DT-450T passive infrared heat to discharge detector; Central process unit adopts YK-AL8/16 intelligent alarm main frame, and combined aural and visual alarm adopts compound type SJ-2 combined aural and visual alarm.
3. coal preparation plant according to claim 1 and 2 prevents the travelling apron safety system of hurting sb.'s feelings; It is characterized in that: the fuselage detector is arranged three groups along the adhesive tape service direction; And the projector in every group of fuselage detector and the spacing of receptor are respectively 58m, 60m, 64m; The fuselage detector is for producing the detector of three beams infrared light, and the spacing of infrared light is 13cm, and the projector of fuselage detector and receptor ground clearance are respectively 25cm, 50cm; The head detector is horizontally disposed with two, and the angle of radiation of head detector is more than or equal to 130 °, and the radiation radius of curvature of joint detector is 5.13-6.26m, and the height of tail detector is 2.2m.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332017A (en) * | 2014-11-10 | 2015-02-04 | 翟殿芳 | Anti-robbery remote control lachrymatory device of self-service bank |
| CN104533515A (en) * | 2014-09-10 | 2015-04-22 | 涿州西默勒自动化技术开发有限公司 | Visual automatic prevention and control device for belt conveyor for mine |
| CN104528320A (en) * | 2014-12-23 | 2015-04-22 | 天津通联电气有限公司 | Mining intrinsic safety type concentrator |
| CN106131485A (en) * | 2016-06-28 | 2016-11-16 | 陕煤集团神南产业发展有限公司 | A kind of continuous milling machine monitored by personnel's system and monitoring method |
| CN106241271A (en) * | 2016-08-23 | 2016-12-21 | 乌海市天惠矿山机械有限责任公司 | A kind of air cushion-belt conveyer automatic intelligent electric-control system |
| CN108622680A (en) * | 2018-06-14 | 2018-10-09 | 贵州大学 | A kind of coal mine ores lifting device with dust suppression function |
| CN110092161A (en) * | 2019-05-29 | 2019-08-06 | 宋崇兰 | A kind of safety guard for conveying equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6155400A (en) * | 1998-03-23 | 2000-12-05 | Rahco International, Inc. | Mobile conveyor including adaptive alignment system |
| DE10035402A1 (en) * | 2000-07-19 | 2002-01-31 | Phoenix Ag | Monitoring device for conveyor system e.g. in mine has data from detection system transmitted to central computer |
| CN2700568Y (en) * | 2004-04-16 | 2005-05-18 | 兖矿集团有限公司 | Intelligent human body inductive alarm device for mining |
| CN201023968Y (en) * | 2007-04-02 | 2008-02-20 | 开滦(集团)有限责任公司技术中心 | Mining adhesive tape conveyor bidirectional roller personnel protection device |
| CN201506625U (en) * | 2009-08-14 | 2010-06-16 | 淮南万泰电子股份有限公司 | Intelligent monitoring device of belt conveyer for mining |
| CN201665424U (en) * | 2010-02-05 | 2010-12-08 | 华中科技大学 | Monitoring device for personnel on coal mine belt conveyor |
| CN201882596U (en) * | 2010-10-28 | 2011-06-29 | 云南大红山管道有限公司 | Emergency stop device for rubber belt conveyor |
-
2012
- 2012-07-25 CN CN2012102592809A patent/CN102765592A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6155400A (en) * | 1998-03-23 | 2000-12-05 | Rahco International, Inc. | Mobile conveyor including adaptive alignment system |
| DE10035402A1 (en) * | 2000-07-19 | 2002-01-31 | Phoenix Ag | Monitoring device for conveyor system e.g. in mine has data from detection system transmitted to central computer |
| CN2700568Y (en) * | 2004-04-16 | 2005-05-18 | 兖矿集团有限公司 | Intelligent human body inductive alarm device for mining |
| CN201023968Y (en) * | 2007-04-02 | 2008-02-20 | 开滦(集团)有限责任公司技术中心 | Mining adhesive tape conveyor bidirectional roller personnel protection device |
| CN201506625U (en) * | 2009-08-14 | 2010-06-16 | 淮南万泰电子股份有限公司 | Intelligent monitoring device of belt conveyer for mining |
| CN201665424U (en) * | 2010-02-05 | 2010-12-08 | 华中科技大学 | Monitoring device for personnel on coal mine belt conveyor |
| CN201882596U (en) * | 2010-10-28 | 2011-06-29 | 云南大红山管道有限公司 | Emergency stop device for rubber belt conveyor |
Non-Patent Citations (1)
| Title |
|---|
| 仝富: "选煤厂防止胶带输送机伤人安全保护装置", 《同煤科技》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533515A (en) * | 2014-09-10 | 2015-04-22 | 涿州西默勒自动化技术开发有限公司 | Visual automatic prevention and control device for belt conveyor for mine |
| CN104332017A (en) * | 2014-11-10 | 2015-02-04 | 翟殿芳 | Anti-robbery remote control lachrymatory device of self-service bank |
| CN104528320A (en) * | 2014-12-23 | 2015-04-22 | 天津通联电气有限公司 | Mining intrinsic safety type concentrator |
| CN106131485A (en) * | 2016-06-28 | 2016-11-16 | 陕煤集团神南产业发展有限公司 | A kind of continuous milling machine monitored by personnel's system and monitoring method |
| CN106131485B (en) * | 2016-06-28 | 2019-09-03 | 陕煤集团神南产业发展有限公司 | A kind of continuous milling machine monitored by personnel method |
| CN106241271A (en) * | 2016-08-23 | 2016-12-21 | 乌海市天惠矿山机械有限责任公司 | A kind of air cushion-belt conveyer automatic intelligent electric-control system |
| CN108622680A (en) * | 2018-06-14 | 2018-10-09 | 贵州大学 | A kind of coal mine ores lifting device with dust suppression function |
| CN110092161A (en) * | 2019-05-29 | 2019-08-06 | 宋崇兰 | A kind of safety guard for conveying equipment |
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Application publication date: 20121107 |