CN104484987A - Coal mine working face roof safe real-time dynamic wireless monitoring device and method - Google Patents
Coal mine working face roof safe real-time dynamic wireless monitoring device and method Download PDFInfo
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Abstract
The invention provides a coal mine working face roof safe real-time dynamic wireless monitoring device and method, the coal mine working face roof safe real-time dynamic wireless monitoring device is composed of a plurality of groups of signal transmitters and a signal transceiver center arranged on a working face, each group of signal transmitter comprises a variety of sensors, parts of the sensors are connected with a single-chip machine by an A / D (analog-digital) converter, other sensors are in direct connection with a single-chip microcomputer I, the single-chip microcomputer I is connected with a wireless transceiver module; the signal transceiver center includes a wireless transceiver module, and a single-chip microcomputer II for controlling the wireless transceiver module, the single-chip microcomputer II is connected with a display module, a 485 communication interface, a function button and an alarm. The coal mine working face roof safe real-time dynamic wireless monitoring device can detect roof pressure, height of caving zone of an end face and roof-to-floor convergence in real time, can also, according to various preset values, form an alarm circuit to achieve the early warning function and data store and transmission function for early warning and alert of fully mechanized working face roof safety, the coal mine working face roof safe real-time dynamic wireless monitoring device has the advantages of simple operation, low power consumption, high accuracy of measurement, and superior prediction and warning method.
Description
Technical field
The present invention relates to the real-time dynamic radio monitoring device of a kind of coal mine work area roof safety and method, be generally applicable to the real-time dynamic monitoring of each coal mine fully-mechanized mining working roof safety.
Background technology
China is coal production big country of the world, and the output of coal constantly increased in recent years, but coal in China produces 3 times that annual Mean Death number is other producing coal country death toll summations of the whole world, brings huge loss to the life of the national people, property.And in five the Nature disasters in colliery, roof accident accounts for great ratio.Top board disaster accident refers in underground coal mine production run, the accidents such as the casualties that the unexpected inbreak of top board causes, equipment damage, production termination.Roof accident is for coal mine gas from explosion, the accident such as permeable, although each death toll is fewer, its accident occurrence frequency is high, and accident total amount is large, is also the emphasis controlling coal mining accident total amount.For many years, the features such as roof accident and the top board disaster of China's coal-mine are multi-point and wide-ranging with it, control difficulty is large, occupy prostatitis in all kinds of coal mining accident always.Add up according to national Coal Mine Safety Supervision Bureau, the Eleventh Five-Year Plan period, roof accident occurred that number and death toll account for that total accident plays number and death toll respectively 52.9% and 38.1%, all occupy first of all kinds of disaster.2012 there is roof accident 366 in national colliery altogether, dead 459 people, account for respectively national coal mining accident always rise number and death toll 47% and 33.2%, continue to occupy first of all kinds of accident.Therefore the fundamental turn for the better of mine safety status, key is also how significantly to reduce top board disaster.Because top board disaster is by various factors such as condition of coal seam occurrence, tectonic structure, mining work activities and production techniques, also do not have measure can prevent the generation of roof accident completely at present, so just seem particularly important to the real-time security dynamic monitoring of face roof in process of coal mining, this greatly can ensure the safety of coal mine personnel and property.
At present, effectively can reflect that the index of face roof safety has roof pressure, end face emits height, roof-to-floor convergence etc.Mine is before exploitation, and coal and rock is generally subject to the effect of gravity, and the stressed of various aspects is balance, can not show pressure phenomenon, mine, at production period, along with the carrying out of mining work, forms certain space, make the outstanding dew of balkstone, thus destroying the original balanced steady state in stratum, rock starts mobile, deforms, the power that this rock activity produces, is rock pressure [in mine.Under the effect of rock pressure [in mine, cause crush, the phenomenon such as broken, support damages by pressure, wall caving, coal deformation, be called the pressure manifestation in mine, strata behaviors is the result of action of underground.The existence of rock pressure [in mine is absolute, if so effectively can monitor the size of ore deposit pressure, ensures ore deposit pressure within the specific limits, just largely can ensure the safety of top board.Roof-to-floor convergence is under hydraulic support supporting role, excavation is by mining influence, the reflection of surrouding rock deformation movement, so roof of coal face degree of stability, bracket support effect and adaptability can be evaluated with it, for Support selection, design (structure, height etc. of support) provide data, advise for improving roof control.Can judge always to push up first weighting, the step pitch of periodic weighting and intensity with it in addition, thus grasp the fully-mechanized mining working country rock characteristics of motion, be ensure workplace safety, the roof-to-floor convergence of national regulation every meter mining height is not more than 100mm.Current also not finding in China weighs the better index of fully-mechanized mining working supporting effect than roof-to-floor convergence, and therefore the observation of roof-to-floor convergence is the observation project that can not be ignored.Tip-to-face distance refers to the distance before hydraulic support front canopy to rib, and regulation can not more than 340mm, and end face emits height to refer to the height of this segment distance, and predetermined distance can not more than 300mm.When immediate roof end face emit higher primary school in critical emit high time, can form stable caving arch, when height is greater than critical altitude, immediate roof rock mass is difficult to form stable caving arch, causes fully mechanized coal face to occur serious roof fall accident.The leakage of effective control cataclastic texture immediate roof is emitted, and roof of head face must be emitted height control within critical height.But at present, these 3 efficiency indexs are all by manually being recorded by separate instrument, the accuracy of data can not be ensured on the one hand, each index can not be monitored real-time dynamicly on the other hand, add the uncertainty of coal mine roof plate accident, contingency, this is just for face roof accident has buried hidden danger, the property in serious threat colliery and the life security of workman.
Summary of the invention
Technical matters: the object of the invention is the weak point overcome in prior art, provide a kind of structure simple, method is easy, and measuring accuracy is high, highly sensitive, the real-time dynamic radio monitoring device of the coal mine work area roof safety that result of use is good and method.
Technical scheme: the real-time dynamic radio monitoring device of coal mine work area roof safety of the present invention, comprise interval and be located at many groups signal projector on the multiple stage hydraulic support of fully-mechanized mining working, the signal transmitting and receiving center of signal projector wireless signal transmission is organized in the reception also comprising upper port or the lower port place being located at fully-mechanized mining working more, and described signal projector of often organizing comprises the multiple sensors be connected in parallel, 16 A/D converters, single-chip microcomputer I and the radio receiving transmitting module one that are linked in sequence with multiple sensor; Described multiple sensors comprise active infrared sensors A, pressure transducer B, infrared ray range sensor C and obliquity sensor D; The single-chip microcomputer II that described signal transmitting and receiving center comprises radio receiving transmitting module two, is connected with radio receiving transmitting module, is also respectively equipped with 485 communication ports, display module, function button and alarm in signal transmitting and receiving in the heart.
Described many group signal projectors are 10-20 group, and determined by working surface hydraulic support sum, interval 10 frame arranges one group.
The model of 16 described A/D converters is MAX1166.
The model of described single-chip microcomputer I is MSP430F149.
Described radio receiving transmitting module one, two is the UTC-1212SE of semiduplex mode.
The model of described single-chip microcomputer II is STM32F103.
Use the real-time dynamic radio monitoring method of coal mine work area roof safety of said apparatus, comprise the steps:
A, on the multiple stage hydraulic support of fully-mechanized mining working interval signalization transmitter, often organize in signal projector: active infrared sensors A is located at hydraulic support top beam near caving shield position, the roof collapse height before being measured by active infrared sensors A between control beam and workplace; Pressure transducer B is located in the hydraulic valve of hydraulic support, measures strut pressure by pressure transducer B; Infrared ray range sensor C is installed in the first half of hydraulic support column, above sensor C, 20cm place distance installs sensor D, the relative shift of hydraulic support column upper-lower section is measured, afterwards by calculating roof-to-floor convergence by infrared ray range sensor C and obliquity sensor D;
B, in the upper port of fully-mechanized mining working or lower port place, the signal transmitting and receiving center receiving wireless signal transmission is installed, moves with working face extraction;
When c, work, enabling signal headend, by signal transmitting and receiving center wake-up signal transmitter, the information collected is passed to single-chip microcomputer I by 16 A/D converters by the pressure transducer B in signal projector, infrared ray range sensor C and obliquity sensor D, trigger radio receiving transmitting module in real time by single-chip microcomputer I to transmit, wireless signal is sent to signal transmitting and receiving center; Subitem arranges the alarm threshold value of each sensor, once there is the phenomenon exceeding alarm threshold value, triggers radio receiving transmitting module one and launches alerting signal, wireless signal is sent to signal transmitting and receiving center by single-chip microcomputer I;
Roof collapse height before active infrared sensors A Real-Time Monitoring between control beam and workplace, when roof collapse height reaches early warning value, information is passed to single-chip microcomputer I by active infrared sensors A, trigger radio receiving transmitting module one by single-chip microcomputer I and launch alerting signal, wireless signal is sent to signal transmitting and receiving center;
The wireless signal that radio receiving transmitting module two receives radio receiving transmitting module one is triggered at the signal transmitting and receiving center being located at fully-mechanized mining working port, the signal of signal transmitting and receiving receive centre carries out address judgement, data processing by single-chip microcomputer II, the data result of each address of real-time display also judges whether triggered alarm according to the data received, by 485 communication ports, signal is passed to underground substation simultaneously, reach by underground monitoring monitor network the remote monitoring that ground host computer realizes data.
Beneficial effect: by being located at signal projector on working surface hydraulic support and being located at the signal transmitting and receiving center of upper port or lower port, signal projector is under the wake-up condition at signal transmitting and receiving center, multi-signal about face roof can be sampled, and control radio receiving transmitting module sampled data is sent, after signal transmitting and receiving receive centre to signal, address judgement is carried out to it, data processing, the data result of each address of real-time display also judges whether triggered alarm according to the data received, the data result of reflection roof safety situation, be connected to underground substation by 485 interfaces simultaneously, the ground Real-Time Monitoring to face roof security parameter is realized by downhole monitoring monitoring network, the end face in monitoring face real-time dynamicly can emit height, roof pressure and roof-to-floor convergence, make the safety monitoring work of face roof more real-time, accurately, reliably, make can predict face roof danger in advance with ground people in mine, effectively avoid the generation of roof accident.Its structure is simple, and method is easy, and measuring accuracy is high, highly sensitive, and sensor resolution is high, and measurement data is accurate, and communication mode is simple, and reliability is high, and work efficiency is high, and cost is low, convenient test, has applicability widely.
Accompanying drawing explanation
Fig. 1 is position structural representation in hydraulic support of the present invention;
Fig. 2 is workplace head-down position structural representation of the present invention;
Fig. 3 is that signal projector of the present invention forms block diagram;
Fig. 4 is that signal transmitting and receiving center of the present invention forms block diagram;
Fig. 5 is roof-to-floor convergence calculation specifications figure in the present invention.
Embodiment
Below in conjunction with the embodiment in accompanying drawing, the invention will be further described:
The real-time dynamic radio monitoring device of coal mine work area roof safety of the present invention, comprise the signal transmitting and receiving center 2 that interval is located at the many groups signal projector 1 on the multiple stage hydraulic support of fully-mechanized mining working, signal projector 1 wireless signal transmission is organized in the reception at the upper port being located at fully-mechanized mining working or lower port place more, described many group signal projectors 1 are 10-20 group, specifically arrange group number to be determined by working surface hydraulic support sum, interval 10 frame arranges one group.Described often group signal projector (1) comprise be connected in parallel multiple sensors 11, with multiple sensor 1) 16 A/D converters 3, single-chip microcomputer I 4 and the radio receiving transmitting module 1 that are linked in sequence; The model of 16 described A/D converters 3 is MAX1166; The model of described single-chip microcomputer I4 is MSP430F149.Described multiple sensors 11 comprise active infrared sensors A, pressure transducer B, infrared ray range sensor C and obliquity sensor D; The single-chip microcomputer II 7 that described signal transmitting and receiving center 2 comprises radio receiving transmitting module 26, is connected with radio receiving transmitting module 26, single-chip microcomputer II 7 is respectively equipped with 485 communication ports 8, display module 9, function button 10 and alarm 12.Described radio receiving transmitting module is the UTC-1212SE of semiduplex mode; The model of described single-chip microcomputer II7 is STM32F103.
As shown in Figure 1, signal projector 1 is installed in the middle part of the back timber of hydraulic support; Install self-control telescoping shoring column Z at hydraulic support top beam near the place of caving shield, telescopic extensions is 100 ~ 300mm, installs active infrared sensors A at the end of this support; Pressure transducer B is installed in the hydraulic valve of hydraulic support; Infrared ray range sensor C is installed in the upper end of hydraulic support column; Above sensor C, 20cm place distance installs sensor D; Four kinds of sensors on each hydraulic support are connected with the signal projector on same hydraulic support by mine sensors connecting line.
As shown in Figure 2, from workplace down the 3rd support suitable for reading, a signal projector installed by every 7 framves from top to bottom, each signal projector comprises the active infrared sensors A (monitoring end face emits height) being installed in hydraulic support ad-hoc location respectively, pressure transducer B (monitoring roof pressure), infrared ray range sensor C (indirect monitoring roof-to-floor convergence) and obliquity sensor D (measuring the angle of column and vertical direction), sensor B, sensor C is connected single-chip microcomputer I 4 with sensor D through A/D converter 3, sensors A is directly connected with single-chip microcomputer I 4, single-chip microcomputer I 4 is connected with radio receiving transmitting module 5.
As shown in Figure 3, sensor B, C, D are 16 A/D converter MAX1166 by precision, the analog signals of sampling interval is converted into digital signal transfers to single-chip microcomputer I 4, sensors A is directly connected with single-chip microcomputer I 4, signal madulation becomes electric wave to send by radio receiving transmitting module 1 after processing data by single-chip microcomputer I 4, and the model of single-chip microcomputer I 4 is MSP430F149.
As shown in Figure 4, signal transmitting and receiving center 2 is made up of single-chip microcomputer II 7, radio receiving transmitting module 26,485 communication port 8, display module 9 and the function button 10 that are connected with single-chip microcomputer II 7 respectively, and the model of single-chip microcomputer II 7 is STM32F103.
After the radio receiving transmitting module 26 at signal transmitting and receiving center 2 receives data-signal, to demodulated data signal, data are passed to single-chip microcomputer II 7 by read-write operation, the function button that signal transmitting and receiving center 2 is arranged has: reset button, wake transmitter button, enable PERCOM peripheral communication button, historical query button, shift knob up.
Use the real-time dynamic radio monitoring method of coal mine work area roof safety of said apparatus, concrete steps are as follows:
A, on the multiple stage hydraulic support of fully-mechanized mining working interval signalization transmitter 1, often organize signal projector) in: active infrared sensors A is located on front canopy, by active infrared sensors A measure before control beam emits a large amount; Pressure transducer B is located in the hydraulic valve of hydraulic support, measures strut pressure by pressure transducer B; Infrared ray range sensor C is installed in the upper end of hydraulic support column, and above sensor C, 20cm place distance installs sensor D, the relative shift of the hydraulic support column upper-lower section measured by infrared ray range sensor C and obliquity sensor D;
B, in the upper port of fully-mechanized mining working or lower port place, the signal transmitting and receiving center 2 receiving wireless signal transmission is installed;
When c, work, enabling signal headend, by signal transmitting and receiving center wake-up signal transmitter, the information collected is passed to single-chip microcomputer I by 16 A/D converters by the pressure transducer B in signal projector, infrared ray range sensor C and obliquity sensor D, trigger radio receiving transmitting module in real time by single-chip microcomputer I to transmit, wireless signal is sent to signal transmitting and receiving center; Subitem arranges the alarm threshold value of each sensor, once there is the phenomenon exceeding alarm threshold value, triggers radio receiving transmitting module one and launches alerting signal, wireless signal is sent to signal transmitting and receiving center by single-chip microcomputer I;
Roof collapse height before active infrared sensors A Real-Time Monitoring between control beam and workplace, when roof collapse height reaches early warning value, information is passed to single-chip microcomputer I by active infrared sensors A, trigger radio receiving transmitting module one by single-chip microcomputer I and launch alerting signal, wireless signal is sent to signal transmitting and receiving center;
The wireless signal that radio receiving transmitting module two receives radio receiving transmitting module one is triggered at the signal transmitting and receiving center being located at fully-mechanized mining working port, the signal of signal transmitting and receiving receive centre carries out address judgement, data processing by single-chip microcomputer II, the data result of each address of real-time display, and by 485 communication ports, signal is passed to underground substation, reach by underground monitoring monitor network the remote monitoring that ground host computer realizes data.
D, basis " code " requirement, fully-mechanized mining working end face emits height to be greater than 300mm, and therefore, the length first regulating self-control telescoping shoring column Z is 250mm, afterwards by the end of active infrared sensors A at this support.When the top board generation inbreak within the scope of tip-to-face distance, and when height reaches 250mm, it is not actionless that active infra-red line sensor will detect infrared ray, that is the infrared ray sent is not constantly bounce-back, active infrared sensors A is triggered, the information that simultaneously transmits to corresponding single-chip microcomputer I, afterwards through transmission of wireless signals to the signal transmitting and receiving center being positioned at workplace upper port or lower port, thus realize early warning; In addition, in this alert program, need setting to only have just report to the police when all can not to monitor infrared ray within infrared receiver is in 1s be dynamic, namely filter is set, thus realization sensors A when top board accidentally has stone or coal cinder to drop does not send warning message, this signal is fallen in automatic fitration, avoids by mistake alert.
E, pressure transducer B is arranged in hydraulic support hydraulic valve, is indirectly obtained the size of top board ore deposit pressure by the pressure measuring hydraulic support column plunger shaft mesohigh liquid, and send pressure value to single-chip microcomputer.
F, the signal transmitting and receiving center 2 receiving many group signal projectors 1 is installed in workplace upper port or lower port place, the function button 10 of opening signal headend 2 sends enabling signal, after the radio receiving transmitting module 5 of many groups signal projector 1 receives enabling signal, many group signal projectors 11 are made to enter duty; When pressure transducer B, the infrared ray range sensor C of many group signal projectors 1 or obliquity sensor D sampled signal exceed threshold value or active infrared sensors A spreads out of warning message, single-chip microcomputer I 4 triggers radio receiving transmitting module 5 and transmits; Signal transmitting and receiving center 2 Received signal strength, single-chip microcomputer II 7 carries out address judgement, data processing to the received signal, the data result of each address of real-time display, and by 485 communication ports 8, signal is passed to underground substation, reach by underground monitoring monitor network the remote monitoring that ground host computer realizes data.
The data that the single-chip microcomputer II 7 at g, signal transmitting and receiving center 2 receives are if the data that send over of active infrared sensors A, end face is then used to emit high data processing subroutine, the data handled well are shown on display module with the data of the decimal system containing unit simultaneously, displaying contents is that end face emits high position, and the alarm 12 at trigger pip headend place; If the data that pressure transducer B sends over, then use pressure data process subroutine, the data handled well shown on display module with the data of the decimal system containing unit simultaneously, displaying contents is support numbering and corresponding roof pressure; If the data that infrared ray range sensor C sends over, then service range data processing subroutine, the data handled well shown on display module with the data of the decimal system containing unit, displaying contents is the distance values of support numbering and corresponding Sensor monitoring simultaneously; If the data that obliquity sensor C sends over, then use inclination data process subroutine, the data handled well shown on display module with the data of the decimal system containing unit simultaneously, displaying contents is the angle of support numbering and corresponding column and vertical.The data that single-chip microcomputer II 7 timing at signal transmitting and receiving center 2 utilizes sensor C and sensor D to transmit calculate fully-mechanized mining working roof-to-floor convergence, display module shows, displaying contents is support numbering and corresponding roof-to-floor convergence, and determines whether triggered alarm 12 (roof-to-floor convergence of every meter of mining height is greater than 100mm) according to final numerical values recited.
H, utilize underground monitoring outstation near coal face, by 485 order wires, signal transmitting and receiving center 2 is connected with monitoring substation, data incorporate monitoring network the most at last, at aboveground server, data processing is good, the pressure data transmitted according to down-hole on the one hand, real-time rendering goes out change curve and the pressure value size of pressure, to predict roof weighting, carries out early warning; Secondly the roof-to-floor convergence data transmitted according to down-hole, real-time rendering roof and floor shifts near discharge curve relatively, monitor its variation tendency, first weighting, the step pitch of periodic weighting and intensity is always pushed up to characterize, for Comprehensive Assessment face roof provides foundation safely, and when the roof-to-floor convergence of every meter of mining height is greater than 100mm, send warning, display alarm place; In addition when down-hole end face emits up to during to warning preset value, aboveground server sends reports to the police and demonstrates warning place.Then just by Web Publishing can on aboveground office Web browser, check each parameter variation tendency of down-hole combined mining working top board and whether exceed standard.
The real-time dynamic radio monitoring device of coal mine work area roof safety of the present invention and method, roof-to-floor convergence is recorded by following methods: upper part infrared ray range sensor C being installed in hydraulic support column by self-control iron hoop, infrared ray range sensor C launches infrared ray downwards, to reflect when infrared ray runs into the plane of the upper and lower two-part junction of column, the part infrared ray of reflection is received by the infrared receiver of sensor C, obtain the distance X of sensor C position to junction plane immediately, the difference X2-X1 that double sampling obtains is the amount of shifting near of upper and lower two of hydraulic support column in this period of sampling time.
As shown in Figure 5, the angle supposing column and the vertical direction recorded by the obliquity sensor D be positioned on hydraulic support column is α; Be X2 by the data at that time recorded being positioned at hydraulic support column top, upper data are X1, then the X=X1-X2 of the amount of shifting near relatively of hydraulic support column upper-lower section; Roof-to-floor convergence H=cos α * X.
In workplace of the present invention, wireless transmission method can have following three kinds.
Mode one: from workplace end opening up, signal projector (1) transmits in the mode of wireless transmission relay, until pass in the first signal projector, last first signal projector gathers the signal transmitting and receiving center 2 passed to and be positioned at upper port place, and in face of finishing the work, signal projector 1 is to the Signal transmissions at signal transmitting and receiving center 2; Vice versa; This transmission mode is simple to operation, and be applicable to long distance workplace, but reliability is poor, one of them signal projector is made mistakes, and the data causing other signal projectors under it to gather cannot be transferred to signal transmitting and receiving center 2;
Mode two: from workplace end opening up, every three signal projectors form a signal and launch group, a small group is unit force transfer successively from the bottom up afterwards, until pass to the first panel signal transmitter, last first panel signal transmitter gathers the signal transmitting and receiving center passed to and be positioned at upper port place, and in face of finishing the work, signal projector 1 is to the Signal transmissions at signal transmitting and receiving center 2; Vice versa; Such as, the signal projector that numbering is followed successively by 9,8,7 is from the bottom up a small group, wherein the transmitters of 9,8 numberings all direct by Signal transmissions to 7 numbering signal projectors; Be numbered the signal projector of 6,5,4 equally so, the like; Signal is passed to 4 numbering signal projectors by 7 numbering signal projectors afterwards, the like until all signals are all passed to 1 numbering signal projector, finally gathered the signal transmitting and receiving center passed to and be positioned at upper port by 1 numbering signal projector, settling signal transmit.Mode two is equally applicable to long distance workplace, transmit more reliable, but operation is comparatively complicated than mode one.
Mode three: from workplace end opening up, every three signal projectors form a signal and launch group, in units of a small group, directly signal is passed to the signal transmitting and receiving center being positioned at upper port place afterwards, in face of finishing the work, signal projector (1) is to the Signal transmissions at signal transmitting and receiving center 2; Vice versa; The method is simple to operate, more more reliable than mode one, mode two, but is only applicable to short distance workplace.
When signal transmitting and receiving center 2 is positioned at lower port, above-mentioned three kinds of communication modes are set up equally, and concrete communication mode is determined according to the actual conditions of fully-mechanized mining working.
Claims (7)
1. the real-time dynamic radio monitoring device of coal mine work area roof safety, it is characterized in that: it comprises interval and is located at many groups signal projector (1) on the multiple stage hydraulic support of fully-mechanized mining working, the signal transmitting and receiving center (2) of signal projector (1) wireless signal transmission is organized in the reception also comprising upper port or the lower port place being located at fully-mechanized mining working more, described often group signal projector (1) comprises the multiple sensors (11) be connected in parallel, 16 A/D converters (3) be linked in sequence with multiple sensor (11), single-chip microcomputer I (4) and radio receiving transmitting module one (5), described multiple sensors (11) comprise active infrared sensors A, pressure transducer B, infrared ray range sensor C and obliquity sensor D, the single-chip microcomputer II (7) that described signal transmitting and receiving center (2) comprises radio receiving transmitting module two (6), is connected with radio receiving transmitting module (6), signal transmitting and receiving center (2) are also provided with RS485 communication port (8), display module (9), function button (10) and alarm (12).
2. the real-time dynamic radio monitoring device of a kind of coal mine work area roof safety according to claim 1, is characterized in that: organize signal projector (1) for 10-20 group described more.
3. the real-time dynamic radio monitoring device of coal mine work area roof safety according to claim 1, is characterized in that: the model of 16 described A/D converters (3) is MAX1166.
4. the real-time dynamic radio monitoring device of coal mine work area roof safety according to claim 1, is characterized in that: described single-chip microcomputer
(4) model is MSP430F149.
5. the real-time dynamic radio monitoring device of coal mine work area roof safety according to claim 1, is characterized in that: described radio receiving transmitting module is the UTC-1212SE of semiduplex mode.
6. the real-time dynamic radio monitoring device of coal mine work area roof safety according to claim 1, is characterized in that: described single-chip microcomputer
(7) model is STM32F103.
7. use the real-time dynamic radio monitoring method of the coal mine work area roof safety of device described in claim 1, it is characterized in that comprising the steps:
A, on the multiple stage hydraulic support of fully-mechanized mining working interval signalization transmitter (1), often organize in signal projector (1): active infrared sensors A is located at hydraulic support top beam near caving shield place, by the roof collapse height before the monitoring of active infrared sensors A between control beam and workplace; Pressure transducer B is located in the hydraulic valve of hydraulic support, measures strut pressure, namely obtain roof pressure by pressure transducer B; Infrared ray range sensor C is located at hydraulic support column upper semisection, above sensor C, 20cm place distance installs sensor D, being measured the relative shift of hydraulic support column upper-lower section by infrared ray range sensor C and obliquity sensor D, obtaining roof-to-floor convergence by calculating;
B, in the upper port of fully-mechanized mining working or lower port place, the signal transmitting and receiving center (2) receiving wireless signal transmission is installed, moves with workplace in exploitation process;
C, during work, enabling signal headend (2), by signal transmitting and receiving center (2) wake-up signal transmitter (1), pressure transducer B in signal projector (1), the information collected is passed to single-chip microcomputer I (4) by 16 A/D converters (3) by infrared ray range sensor C and obliquity sensor D timing, trigger radio receiving transmitting module (5) by single-chip microcomputer I (4) to transmit, subitem arranges the alarm threshold value of each sensor, once there is the phenomenon exceeding alarm threshold value, trigger radio receiving transmitting module one by single-chip microcomputer I and launch alerting signal, wireless signal is sent to signal transmitting and receiving center,
Roof collapse height before active infrared sensors A Real-Time Monitoring between control beam and workplace, when roof collapse height reaches early warning value, information is passed to single-chip microcomputer I (4) by active infrared sensors A, trigger radio receiving transmitting module one by single-chip microcomputer I and launch alerting signal, wireless signal is sent to signal transmitting and receiving center;
The wireless signal that radio receiving transmitting module two receives radio receiving transmitting module one is triggered at the signal transmitting and receiving center being located at fully-mechanized mining working port, the signal of signal transmitting and receiving receive centre carries out address judgement, data processing by single-chip microcomputer II, the data result of each address of real-time display also judges whether triggered alarm according to the data received, by 485 communication ports, signal is passed to underground substation simultaneously, reach by underground monitoring monitor network the remote monitoring that ground host computer realizes data.
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| CN106644181A (en) * | 2017-02-17 | 2017-05-10 | 中国矿业大学(北京) | Method and device for monitoring load distribution of hydraulic support top beam |
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| CN108593875A (en) * | 2018-03-12 | 2018-09-28 | 温州智信机电科技有限公司 | The real-time prediction meanss of coal wall caving and prediction technique |
| CN109307534A (en) * | 2018-12-10 | 2019-02-05 | 山东科技大学 | A kind of prearranged pillar STABILITY MONITORING device and construction method |
| CN109915994B (en) * | 2019-03-18 | 2020-10-23 | 珠海格力电器股份有限公司 | Electric appliance, distance monitoring alarm system and method |
| CN109915994A (en) * | 2019-03-18 | 2019-06-21 | 珠海格力电器股份有限公司 | A kind of electric appliance, distance detection alarm system and method |
| CN110043257A (en) * | 2019-06-05 | 2019-07-23 | 中国矿业大学(北京) | A kind of coalcutter automatic reversing system |
| CN111561865A (en) * | 2020-03-26 | 2020-08-21 | 三一重型装备有限公司 | Measuring device and measuring method for beam end curve of hydraulic support |
| CN111561865B (en) * | 2020-03-26 | 2021-07-23 | 三一重型装备有限公司 | Measuring device and measuring method for beam end curve of hydraulic support |
| CN111561353A (en) * | 2020-06-17 | 2020-08-21 | 山东东山矿业有限责任公司株柏煤矿 | Mining pressure monitoring system for coal face of steeply inclined coal seam |
| CN114509036A (en) * | 2021-11-16 | 2022-05-17 | 中煤新集能源股份有限公司 | Hydraulic support monitoring device |
| CN114509036B (en) * | 2021-11-16 | 2024-01-16 | 中煤新集能源股份有限公司 | Hydraulic support monitoring device |
| CN114582087A (en) * | 2021-12-15 | 2022-06-03 | 华亭煤业集团有限责任公司 | Fully-mechanized coal mining face all-optical network safety monitoring system |
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