CN1357769A - Explosion-proof geologic radar collection system - Google Patents
Explosion-proof geologic radar collection system Download PDFInfo
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- CN1357769A CN1357769A CN 01109040 CN01109040A CN1357769A CN 1357769 A CN1357769 A CN 1357769A CN 01109040 CN01109040 CN 01109040 CN 01109040 A CN01109040 A CN 01109040A CN 1357769 A CN1357769 A CN 1357769A
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Abstract
The explosion-proof geologic radar collection system consists of data acquisition unit, industrial control computer, signal controller, reception controller and emitting controller. The signal controller is connected to the emitting controller and reception controller as well as the emitting antenna and receiving antenna. In coal mine exploitation, the geological forecast of drift face and residual coal bed thickness are very important. The present invnetion develops explosion-proof geologic radar collection system, serial antenna and analysis software for the safe production in coal mine. The technology of the present invention is one hi-tech combining geology, HF electronics, electromagnetic field theory, data processing, etc.
Description
The present invention relates to a kind of explosion-proof geologic radar collection system, especially design a kind of coal mining that is used for, forecast of workplace front geological and the thick detection of remaining coal are the radar collection system of the highly efficient and productive safety in production service in colliery.
Geologic radar detection is a new and high technology that grew up in recent years, because have quick, advantages such as precision is high, lossless detection, this method is widely used at numerous areas such as engineering hydrogeology, engineering Non-Destructive Testing, environment and subterranean water enquires.
In China, coal is the main energy, and can the colliery keep the safety in production and directly have influence on development and national economy.Because tectonic structure is not clear in the well, the coal mining accident that causes all has generation every year.Personnel death in the tool statistics, accident in 2000 just reaches 5798 people, and the direct and consequential damage that causes is inestimable.Especially the developed recently caving coal technology of getting up, the tectonic structure of its design, construction and coal seam and country rock, remaining coal thickness, bottom coal thickness etc. have confidential relation.Methods such as DC electrical method, Electromgnetically-transparent, slot wave earthquake have successively appearred in development that decades have been experienced in physical prospecting in the coal mine and exploration, and these methods have all obtained certain achievement in application in practice.Surveying in the well is a kind of special Exploration Domain, and at first subsurface environment is abominable, except that the space condition restriction that is subjected to the tunnel, also will be subjected to the infringement of moisture, dust and Device in Gas; Secondly in well physical prospecting be a kind of closely, little structural exploration, so the equipment of physical prospecting in the well and method must have characteristics such as easy to use, high precision.Factors such as inconvenience that Detection Techniques are used just because of detecting devices in the well and precision be low are in the past restricting their application under mine; Simultaneously, these methods can not effectively be surveyed the thickness of remaining coal in the caving recovery process.At present, in the coal mining field, press for light, high-precision detecting devices and method and cooperate with it.
Geological radar is that subjects such as collection geology, high-frequency electronic, computing machine, Theory of Electromagnetic Field, information processing are the new and high technology of one.As far back as 1970, U.S. geophysical instrument company produced first Tianwan businessman and has used geological radar, with development of electronic technology, had successively developed the product of different times different models such as SIR-8, SIR-3, SIR-10, SIR-10A, SIR-2, SIR-10H.Just because of it fast, characteristics such as harmless, high precision, other countries also add the ranks of developing geological radar in the world, as Germany, Britain, Switzerland, Norway and Canada etc.Canadian Sensors﹠amp in 1989 wherein; Software company successfully produces the commercial radar of Pulse EKKO-IV type, develops the higher EKKO-1000 continuous probe radar of frequency in recent years again.Switzerland RAMAC company also develops into the RAMAC geological radar in the early 1990s, develops second generation product in 1997 again.Over nearly 5 years, the China that is applied in of geological radar has also obtained rapidly development, the tool statistics, the geological radar equipment sum of present domestic import is no less than 100, these equipment almost contained nationally all kinds ofly build, worker, ore deposit, enterprises and institutions.Units such as domestic highway research institute, electron institute, some universities also take to the research work of highway geological radar.
Import equipment is from the precision and the degree of depth of exploration, and still have following major defect: on (1) hardware: the signal vibration interference of antenna inside is bigger.Especially for the deep reflex weak signal, because its noise is lower, the user is easy to produce wrong explanation.(2) on the software: still adopt the pattern of seismic data processing, do not consider the concrete property of electromagnetic wave itself.All in all, the characteristics such as single, not explosion-proof of the not explosion-proof and domestic equipment function of overseas equipment all can not satisfy the use in coal mine.At present, the application of geological radar in coal mining is still " blind spot ".
The objective of the invention is to utilize characteristics such as geological radar high resolving power, this advanced technology of geological radar is used for coal mining, by in time, survey tectonic structures such as karst distribution in coal mine work area the place ahead minor fault, karst collapse col umn, pyrogenic rock invasion band and coal seam roof and floor thickness, interlayer coal thickness, coal seam dirt band thickness and distribution, the country rock apace, instruct the exploitation and the design in colliery.Highly efficient and productive, high safety in production service for the colliery.
The present invention is achieved in that it comprises industrial computer, data acquisition unit, signal controller, mission controller, reception controller, emission and receiving antenna.Wherein data acquisition unit connects industrial computer, signal controller, reception controller respectively; Controller is penetrated, received to signal controller running fire respectively; Antenna is penetrated in the mission controller running fire; Receive controller and connect the receipts antenna; Data acquisition unit connects preposition amplification by interface and address decoding circuitry and the A/D change-over circuit is formed; Signal controller claims to cry time base circuit again, and it comprises, and decoding is latched, A/D digital-to-analog conversion, constant current source and fast ramp generator, comparer, speed-sensitive switch, trigger pulse chronotron, supply convertor are formed.Wherein supply convertor respectively with A/D digital-to-analog conversion, speed-sensitive switch, constant current source and fast ramp generator with link to each other comparer and decipher and connect A/D digital to analog converter, supply convertor respectively after latch links to each other after the trigger pulse device is connected again; Receive controller and comprise high-voltage power supply, feedback circuit, integrator, trigger, supply convertor, prolong door, sampling dipulse generator, sampling head and height are put composition, wherein supply convertor connects trigger circuit respectively, prolong door, feedback circuit, high-voltage power supply, integrator, sampling head, sampling dipulse generator, height is put, high-voltage power supply connects sampling dipulse generator respectively, integrator, feedback circuit connects sampling head respectively, integrator, prolong door and connect integrator respectively, trigger circuit, height is put, sampling dipulse generator connects trigger circuit respectively, height is put, sampling head, height are put and are connected the sampling head composition.
The present invention compared with prior art, the advantage that has is:
The explosion-proof geologic radar of real profile monitoring, continuous probe when the present invention's development has can carry out continuous sweep and survey, and also can carry out single-point and survey, and stacking fold can reach 32767 times; The present invention adopts the complete compatible main control unit of antenna; Adopt low-power consumption, wide dynamic range design, guaranteeing to postpone the service time of internal electric source under the high-resolution prerequisite; The present invention adopts the integrated design of control circuit and main frame, has dwindled volume, for the use under the mine provides convenience; The present invention is applied in touch screen technology on the radar equipment, has improved user's dirigibility and safe reliability in operation; The present invention has been equipped with the on-the-spot man-machine interaction extractive technique of thickness, for time crucial point reason and the explanation at scene provides convenience.
Below in conjunction with accompanying drawing embodiments of the invention are described in detail:
Fig. 1 is the block scheme of technical solution of the present invention.
Fig. 2 is a data acquisition unit circuit structure diagram of the present invention.
Fig. 3 is a data acquisition unit wiring diagram of the present invention.
Fig. 4 is a signal control circuit block diagram of the present invention.
Fig. 5 is a signal control circuit circuit diagram of the present invention.
Fig. 6 is a reception control circuit block diagram of the present invention.
Fig. 7 is a reception control circuit circuit diagram of the present invention.
Fig. 8 is processing of the present invention, acquisition software process flow diagram.
As shown in Figure 1:
The first step: transmit data acquisition signal and acquisition parameter to data acquisition unit by industrial computer.
Second step: by starting impulse and acquisition parameter that data acquisition unit transmits data acquisition for the control signal unit, simultaneously, the control signal unit transmits the A/D starting impulse to data acquisition unit.
The 3rd step: generate transponder pulse and received pulse by signaling control unit according to acquisition parameter, respectively they are sent to mission controller and receive controller.
The 4th step: mission controller generates narrow pulse signal, and sends it to emitting antenna; Meanwhile, receive controller and generate inhibit signal, make transmit and received signal synchronous, and will send data acquisition unit to from the signal that antenna is received, by data acquisition unit simulating signal is carried out digitizing.
The 5th step: send the simulating signal that generates to industrial computer by data acquisition unit.
The 6th step: the data of gathering are handled, shown and store by industrial computer.
As shown in Figures 2 and 3:
Data acquisition unit is made up of interface and address decoding circuitry and preposition amplification and A/D change-over circuit.
(1) interface and address decoding circuitry:
Purpose: carry out communication with other control assembly;
Implement: integrated of 74HC574 passes through 26 pin flat cables and links to each other with Fig. 4 control signal unit; Integrated of 74HC688 links to each other with industrial computer by isa bus.
(2) preposition amplification and A/D change-over circuit:
Purpose: simulating signal is amplified and analog to digital conversion.
Implement: link to each other with external circuit by integrated of A/D620,7722 integrated.
As shown in Figure 4 and Figure 5:
The control signal unit claims time base circuit again, is made up of following seven parts: decoding is latched, A/D digital-to-analog conversion, constant current source and ramp generator, comparer, speed-sensitive switch, trigger pulse chronotron, power conversion soon.
(1) decoding is latched:
Purpose: will decipher from the data that main frame comes and latch, and deliver to the control of delaying time of A/D transducer, or deliver to the A/D transducer and carry out stepping control, or deliver to constant current source and carry out gear shift and control.
Implement: be formed by connecting by integrated of integrated of 74LS138,74LS373, integrated of 74LS04 etc.
(2) A/D digital-to-analog conversion:
Purpose: will decipher latched data and carry out the A/D conversion, the output that two-way A/D digital-to-analogue is changeed is compared the two-way pulse triggering signal of output with quick oblique wave in comparer.Thereby the time-delay of this two pulse signals or stepping obtain very accurate control.
Implement: be formed by connecting by integrated of AD-DAC85-V.
(3) constant current source and fast ramp generator:
Purpose: with constant current source electric capacity is charged, thereby produce the extraordinary quick oblique wave of the linearity, this is very necessary to accurate control time-delay or stepping.Gear shift is exactly that quick oblique wave to Different Slope switches.
Implement: be formed by connecting by a plurality of 2N5401 devices.
(4) comparer:
Purpose: the output that two-way A/D digital-to-analogue is changeed is comparing the two-way pulse triggering signal of output with quick oblique wave.This two-way pulse triggering signal has very strict time relationship.
Implement: be formed by connecting by integrated of AD790AQ.
(5) speed-sensitive switch:
Purpose: a trigger pip TRIG from main frame is sent here, in descending synchronously of trigger pip TRIG, produce one 5 delicate switching signal, its pulse front edge is less than 20 nanoseconds.
Implement: be formed by connecting by devices such as integrated of integrated of LM7171,74LS04 and 2N5401.
(6) trigger pulse chronotron:
Purpose: the two-way pulse triggering signal of comparer output, the one road delivers to transmitter triggers transmitter work, and one the road delivers to receiver triggers operation of receiver.Owing to of the time-delay big (about 50 nanoseconds) of receiver machine part, thereby there is a system delay than transmitter section.The effect of trigger pulse chronotron is fallen this part compensation of delay exactly.
Implement: be formed by connecting by devices such as integrated of integrated of AD9501,74LS123 and 2N2219.
(7) power conversion:
Purpose: single from importing+12V voltage, generation+12V ,-12V ,+5V output voltage.
Implement: be formed by connecting by integrated of CJ12D12 power module, LM7805CT etc.
As shown in Figure 6 and Figure 7:
Receiving control module is made up of following nine parts: door, integrator, feedback circuit are put, prolonged to power conversion, high-voltage power supply, trigger circuit, sampling dipulse generator, sampling head, height.
(1) power conversion:
Purpose: single from importing+12V voltage, generation+12V ,-12V output voltage.
Implement: be formed by connecting by the CJ12D12 power module.
(2) high-voltage power supply:
Purpose: single from importing+12V voltage, generation+200V output voltage uses for sampling dipulse generator.
Implement: be in series by a plurality of NR12D12 power modules.
(3) trigger circuit:
Purpose: one that sends here from time base circuit receives trigger pip, this trigger pip synchronously down, produces the trigger pip that the dipulse generator that is adapted to sample needs.
Implement: be formed by connecting by integrated grade of LM7171.
(4) sampling dipulse generator:
Purpose: in descending synchronously of this trigger pip, produce one and be adapted to the sampling dipulse signal that sampling head needs, 0.3 nanosecond of pulsewidth of this sampling dipulse signal, amplitude 2v, positive and negative symmetry.
Implement: be formed by connecting by 2N3905 device, 2N5551 device and concentric cable etc.
(5) sampling head:
Purpose: sampling head comprise the biasing of sampling gate, sampling gate and before put etc.In order to gather the electric signal of high speed weak.
Implement: be formed by connecting by devices such as HSMS-2828,2N5486.
(6) height is put:
Purpose: the signal that sampling head is picked up amplifies.
Implement: be formed by connecting by integrated of AD844.
(7) prolong door:
Purpose: the output signal that height is put is carried out secondary sample.
Implement: be formed by connecting by devices such as diode, transformers.
(8) integrator:
Purpose: the output signal of putting through the height that prolongs the door secondary sample is carried out integration and output.
Implement: be formed by connecting by integrated grade of AD845.
(9) feedback circuit:
Purpose: integral output signal is fed back to the sampling head biasing circuit, constitute the closed-loop path thereby door, integrator and feedback circuit etc. are put, prolonged to sampling head, height, thereby constitute a differential sample receiver.
Implement: be formed by connecting by integrated grade of AD845.
As shown in Figure 8:
The acquisition software flow process consists of the following components: file management, parameter setting, data acquisition, data processing, withdraw from acquisition system.
(1) file management: on the hard disk all are managed.
(2) parameter setting: the display parameter that acquisition parameter and figure are set.
(3) data acquisition: enter acquisition state, reading of data, demonstration, deposit.
(4) data processing: analyze and handle to gathering the data of coming.
(5) withdraw from acquisition system: withdraw from the collection environment.
Invention reaches following technical indicator: the computer motherboard of (1) industry control standard: 586 mainboards, CPU are that Pentium 233,16 million or 32,000,000 internal memories are optional, and are hard
Coil optional. (2) to be controlled to be third gear adjustable for base the time, maximum time window be respectively 64 nanoseconds, 512 nanoseconds, 1024 nanoseconds. (3) sampling length: a 64-4096 sampling point can be chosen wantonly. (4) sample mode: single-spot testing and continuous sweep are optional. (5) triggering mode is two kinds of computer-internal and external triggers. (6) signal tranmitting frequency: be 100KHz to the maximum. (7) moment transmitted pulse voltage: 100,000,000 antennas are 400 volts, 96 volts on 500,000,000 antennas, 24 volts on 1,000 million antennas. (8) exomonental width: 1 nanosecond, 2 nanoseconds, 5 nanoseconds and 10 nanoseconds. (9) analog-to-digital conversion is 16. (10) dynamic range: 140db. (11) display mode: waveform, color graphics. (12) gain control: 2db, 4db, 8db, 16db, 32db. (13) voltage input: 9-16 volt. (14) antenna: 50MHz, 100MHz, 250MHz, 500MHz, 1000MHz.
Invention mainly comprises following content:
Main frame, emitter, receiver, antenna, other parts. (1) main frame: the design and fabrication of main frame shell, radar signal control panel, data acquisition board. (2) emitter: 1 nanosecond, 2 nanoseconds, 5 nanoseconds, 10 nanosecond transmitter board. (3) receiver: whole day line compatible receiver plate. (4) antenna: outside 100,000,000 antennas and shell, 50,000,000 antennas and shell, 250,000,000 antennas and shell, 500,000,000 antennas reach
Shell, 1,000 million antenna and shells. (5) other parts: battery and battery case, big line and high-frequency signal joint.
Claims (6)
1. explosion-proof geologic radar collection system, it comprises industrial computer, data acquisition unit, signal controller, mission controller, reception controller, emitting antenna and receiving antenna, it is characterized in that: data acquisition unit connects industrial computer, signal controller, reception controller respectively; Signal controller running fire is respectively penetrated controller, is received controller; Antenna is penetrated in the mission controller running fire, receives controller and connects the receipts antenna; Data acquisition unit connects preposition amplification by interface and address decoding circuitry and the A/D change-over circuit is formed; Signal controller by supply convertor respectively with A/D digital to analog converter, speed-sensitive switch, constant current source and fast ramp generator be connected again after the trigger pulse delayer is connected, decipher latch and connect A/D digital to analog converter, supply convertor respectively after comparer links to each other.
2. acquisition system according to claim 1 is characterized in that: described reception controller be by supply convertor connect trigger circuit respectively, prolong door, feedback circuit, high-voltage power supply, integrator, sampling head, sampling dipulse generator, height put; High-voltage power supply links to each other with sampling dipulse generator, integrator; Prolonging door connects integrator, trigger circuit, height respectively and puts; Sampling dipulse generator connects trigger circuit, sampling head respectively; Sampling head connects that height is put, feedback circuit is formed.
3. acquisition system according to claim 1 is characterized in that: the interface of described data acquisition unit and address decoding circuitry be by integrated of 74HC574 by 26 pin flat cables and signal controller connect, by integrated of 74HC688 by isa bus and industrial computer company; Preposition amplification and A/D analog to digital conversion circuit link to each other with external circuit with 7722 integrated by integrated of A/D620.
4. acquisition system according to claim 1 is characterized in that: the decoding latch of described signal controller is to be formed by connecting by 74LS138,74LS373, integrated of 74LS04; The A/D digital-to-analog conversion is formed by connecting by integrated of AD-DAC85-V; Constant current source is formed by connecting by a plurality of 2N5401 devices with fast ramp generator; Comparer is formed by connecting by integrated of AD790AQ; Speed-sensitive switch is formed by connecting by integrated of integrated of LM7171,74LS04,2N5401 device; The trigger pulse delayer is formed by connecting by integrated of integrated of AD9501,74LS123,2N2219 device; Power conversion is formed by connecting by CJ12D12 power module, integrated of LM7805CT.
5. acquisition system according to claim 1 and 2 is characterized in that: described reception control circuit, its supply convertor is formed by connecting by the CJ12D12 power module, by input+12V generation+12V ,-the 12V output voltage; High-voltage power supply is in series by a plurality of NR12D12 and produces 200V voltage; Trigger circuit are formed by connecting by LM7171; Sampling dipulse generator is made up of 2N3906,2N5551 device and concentric cable, produces the positive and negative symmetrical pulse signal of wide 0.3 nanosecond, amplitude 2V; Sampling head is formed by connecting by integrated of HSMS-2828,2N5486 device; Height is put by integrated of AD844 and is formed by connecting; Integrator and feedback circuit are formed by connecting by integrated of AD845.
6. acquisition system according to claim 1 is characterized in that: the mainboard of industrial computer is 586, CPU is a Pentium 233; 16M or 32M internal memory are optional; It is adjustable that Shi Ji is controlled to be third gear; Window is respectively 64 nanoseconds, 512 nanoseconds, 1024 nanoseconds when maximum; Sampling length is that the 64-4096 sampling point is adjustable; Sample mode: single-spot testing and continuous sweep are optional; Triggering mode is that computer-internal triggering and external trigger are optional; The signal transmission frequency is 100KHz to the maximum; Instantaneous transponder pulse voltage: 100,000,000 antenna 400V, 500,000,000 antenna 96V, 1,000 million antenna 24V; Exomonental width: 1 nanosecond, 2 nanoseconds, 5 nanoseconds, 10 nanoseconds; Analog to digital conversion is 16, dynamic range 140db; Gain control: 1db, 2db, 4db, 8db, 16db, 32db, 64db, 128db are optional; The display mode of image data has: waveform, cromogram are optional; Software runtime environment WINDOWS95, WINDOWS98 or WINDOWS2000; Be equipped with antenna: 50MHz, 100MHz, 250MHz, 500MHz, 1000MHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB011090405A CN1170171C (en) | 2001-02-28 | 2001-02-28 | Explosion-proof geologic radar collection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB011090405A CN1170171C (en) | 2001-02-28 | 2001-02-28 | Explosion-proof geologic radar collection system |
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| CN1357769A true CN1357769A (en) | 2002-07-10 |
| CN1170171C CN1170171C (en) | 2004-10-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251605B (en) * | 2008-04-17 | 2010-06-02 | 中铁二局股份有限公司 | Method for forecasting advanced geology for tunnel construction |
| CN101762815B (en) * | 2010-01-11 | 2011-11-23 | 大连海事大学 | Maritime shore-based radar image transmission system and transmission method thereof |
| CN103728668A (en) * | 2014-01-07 | 2014-04-16 | 山东大学 | Single-hole directional geological radar for tunnel advanced geological exploration |
| CN111441329A (en) * | 2020-03-21 | 2020-07-24 | 天地科技股份有限公司 | Method for predicting damage of highway pavement under influence of coal mining subsidence |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261325B (en) * | 2008-04-21 | 2010-06-09 | 中铁西南科学研究院有限公司 | Geological advanced prediction method suitable for TBM construction |
| CN101726729B (en) * | 2008-10-16 | 2012-06-20 | 中国矿业大学(北京) | High-precision receiver of geological radar |
-
2001
- 2001-02-28 CN CNB011090405A patent/CN1170171C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251605B (en) * | 2008-04-17 | 2010-06-02 | 中铁二局股份有限公司 | Method for forecasting advanced geology for tunnel construction |
| CN101762815B (en) * | 2010-01-11 | 2011-11-23 | 大连海事大学 | Maritime shore-based radar image transmission system and transmission method thereof |
| CN103728668A (en) * | 2014-01-07 | 2014-04-16 | 山东大学 | Single-hole directional geological radar for tunnel advanced geological exploration |
| CN111441329A (en) * | 2020-03-21 | 2020-07-24 | 天地科技股份有限公司 | Method for predicting damage of highway pavement under influence of coal mining subsidence |
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