CN105204074A - Mining intrinsically-safe receiving system for electrical signals induced according to focusing double frequency induced polarization method - Google Patents
Mining intrinsically-safe receiving system for electrical signals induced according to focusing double frequency induced polarization method Download PDFInfo
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- CN105204074A CN105204074A CN201510707171.2A CN201510707171A CN105204074A CN 105204074 A CN105204074 A CN 105204074A CN 201510707171 A CN201510707171 A CN 201510707171A CN 105204074 A CN105204074 A CN 105204074A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000010287 polarization Effects 0.000 title claims abstract description 22
- 238000005065 mining Methods 0.000 title abstract description 5
- 230000003750 conditioning effect Effects 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 14
- 238000001514 detection method Methods 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 11
- 230000005684 electric field Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
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- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010291 electrical method Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
- 235000009018 li Nutrition 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a mining intrinsically-safe receiving system for electrical signals induced according to a focusing double frequency induced polarization method. The receiving system is characterized by comprising a power supply circuit, an interface circuit, a conditioning module, a main-control module, a housing, an interface and the like, wherein the power supply circuit is used for supplying power to the interface circuit, the conditioning module and the main-control module; the interface circuit is connected with a circumscribed terminal, the conditioning module in a receiver and the main-control module; the conditioning module is mainly used for performing the functions of conditioning, acquisition, synchronization control signal generate and the like of induced electrical signals; the main-control module is mainly used for performing the functions of system control, induced polarization parameter display, data processing and the like. The mining intrinsically-safe receiving system has the advantages that measuring, displaying and saving of high-low frequency amplitude value, high-low frequency absolute phase, apparent resistivity, apparent frequency and other induced polarization parameters, as well as synchronization control and data display of a transmitter can be realized. The internal circuit of the receiving system meet the technical specification and requirements of intrinsic safe production of a coal mine, so that the receiving system can be used for look-ahead detection of an underground laneway of the coal mine.
Description
Technical field
The present invention relates to a kind of forward probe instrument of coal mine operation of forward probe field, belong to applied geophysics electrical method advanced detection technology, particularly relate to a kind of Mine-used I. S focusing double-frequency induced polarization method and swash electric signal receiving system.
Background technology
The mechanization degree of China's coal-mine mining method strengthens gradually, requires more and more higher to the work efficiency of fully mechanized workface.The principle of " prediction has pick to visit, first visits and dig afterwards, first controls and adopt afterwards " must be followed in tunneling process, ensure the safety in production of personnel and machine in workplace.At present, coal mine down-hole tunnel forward probe method comprises mine direct current method, Mine Transient Electromagnetic Method, underground geological radar probe method, Rayleigh waves method and mine seismic wave advanced detection technology etc.There are the following problems for these geophysical prospecting method: there is the outstanding problems such as detection accuracy rate is low, poor real, directivity are poor, efficiency is low, cost is high, poor anti jamming capability, spy pick separation, can not meet the requirement of development end to forward probe completely.Therefore, study that a kind of method of work is simple, detection accuracy is high, it is significant to realize with the forward probe method of development machine work compound as early as possible.
Focusing on double-frequency induced polarization method (patent No. CN103176214A) is a kind of Advance Detection of Coal Roadway method based on bidifly electrical method and static focusing effect that China Mining Univ. (Beijing) proposes, according to the character that same sex electric field repels mutually, the detection electric field utilizing the constrained electric field of constraint electrode emission and central electrode to launch interacts, utilize constraint and the deflecting action of electric field, the direction of propagation of effective control electric field, the transmit direction of detection electric field and transmitting boundary is made to control in certain limit, thus realize angle and depth scan detection, carry out the accurate location of anomalous body, reach and determine direction, the object of set a distance detection.
The kind academician that how to continue of Central South University has invented double-frequency induced polarization method and pertinent instruments (patent No. CN1034276A), wherein SQ-3C Dual-frequency Ip Method instrument receiver mainly adopts mimic channel design, shortcoming is that apparatus structure is complicated, be subject to temperature drift, time drift, Environmental Noise Influence, be mainly used in surface electric survey Exploration Domain at present.The Japanese plum ability etc. of Shandong University has invented tunnel or tunnel advance geologic prediction combined type induced polarization instrument and equipment (patent No. CN102176059A), weak point is that frequency-region signal processing module can only obtain the amplitude of low frequency and high frequency fundamental, and phase information can not be obtained, be mainly used in the water body unfavorable geologic body forecast of front, tunnel at present.According to consulting domestic and international pertinent literature, induced polarization method and instrument thereof are not yet for coal mine down-hole tunnel forward probe field.
Summary of the invention
The object of the invention is to, overcome the defect that existing instrument exists, combine pick forward probe method based on focusing double-frequency induced polarization method coal road, provide one to meet coal mine environment requirement, the double-frequency induced polarization method of Mine-used I. S focusing accurately and reliably swashs electric signal receiving system.
The present invention is achieved by the following technical solutions:
A kind of Mine-used I. S focuses on double-frequency induced polarization method and swashs electric signal receiving system, it is characterized in that, by power circuit, interface circuit, conditioning module, main control module, the composition such as shell and interface, described power circuit is interface circuit, conditioning module and main control module are powered, interface circuit respectively conditioning module inner with external terminal and receiver and main control module is connected, conditioning module mainly completes the conditioning of sharp piezoelectric voltage signal, the functions such as the generation of collection and synchronous control signal, the main completion system of main control module controls, the functions such as parameters of electrical induction display and data processing, utilize the present invention, can realize high frequency amplitude, low frequency amplitude, high frequency absolute phase, low frequency absolute phase, apparent resistivity, depending on the measurement of the parameters of electrical inductions such as Swing frequency, display and to store and to the synchro control of transmitter and data display.
Mine-used I. S of the present invention focuses on double-frequency induced polarization method and swashs electric signal receiving system compared with prior art, has following beneficial effect:
1, the present invention adopts Mine-used I. S man-machine interface as main control module, can be directly used in underground coal mine explosion-proof environment;
2, the present invention adopts isolating interface technology, achieves RS-485 communication isolating and exports control signal isolation, enhance system rejection to disturbance ability.
3, the present invention takes into full account colliery intrinsic safety requirements when designing, and meets the requirement of underground coal mine particular surroundings to electrical equipment, can be used in the forward probe of coal mine roadway.
Accompanying drawing explanation
Fig. 1 is that the present invention focuses on double-frequency induced polarization method forward probe system architecture diagram;
Fig. 2 a and 2b is drive control signal oscillogram of the present invention;
Fig. 2 c is double frequency modulation current waveform figure of the present invention;
Fig. 2 d is that the present invention swashs electric signal waveform figure;
Fig. 3 is conditioning module structural drawing of the present invention;
Fig. 4 is that Mine-used I. S of the present invention focusing double-frequency induced polarization method swashs electric signal receiving system structural drawing.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect and be easy to understand and understand, below in conjunction with concrete diagram, set forth the present invention further.
With reference to figure 1, Fig. 2.The present embodiment focuses on double-frequency induced polarization method forward probe system and comprises pumping signal emission coefficient (hereinafter referred to as emission coefficient) and sharp electric signal receiving system (hereinafter referred to as receiving system).Receiving system can produce dual-frequency P WM drive control signal V
con1, V
con2, as Fig. 2 a and Fig. 2 b, control emission coefficient and produce double frequency modulation square wave current I (t), as shown in Figure 2 c, fed the coal petrography of side in face of coal roadway tunneling by emitting electrode.The expression formula of I (t) is such as formula (1).
There is induced polarization in coal rock medium, produce and swash piezoelectric voltage signal V under exciting current effect
int (), as Fig. 2 d, is received by the potential electrode of receiving system.Frequency field swash electrical resistivity survey survey in, near objective body current density the range of linearity in, can the earth regard linear time invariant system as.Therefore, V
infundamental frequency f in I (t) is comprised in (t)
l, f
hand harmonic frequency content, comprise noise voltage composition V in addition
noise.V
int the expression formula of () is such as formula shown in (2).
Receiving system Main Function is the impact of harmonic carcellation frequency content and noise voltage, obtains and swashs piezoelectric voltage amplitude Δ V
lwith Δ V
hand phase differential
with
further calculating obtains apparent resistivity ρ
s, look Swing frequency F
s, look phase frequency
deng parameters of electrical induction, computing formula is respectively such as formula (3), (4), (5).
With reference to figure 3.The present embodiment receiving system is by power circuit, interface circuit, conditioning module, main control module, the composition such as shell and interface, described power circuit is interface circuit, conditioning module and main control module are powered, interface circuit respectively conditioning module inner with external terminal and receiver and main control module is connected, conditioning module mainly completes the conditioning of sharp piezoelectric voltage signal, the functions such as the generation of collection and synchronous control signal, the main completion system of main control module controls, the functions such as parameters of electrical induction display and data processing, utilize the present invention, can realize high frequency amplitude, low frequency amplitude, high frequency absolute phase, low frequency absolute phase, apparent resistivity, depending on the measurement of the parameters of electrical inductions such as Swing frequency, display and to store and to the synchro control of transmitter and data display.
With reference to figure 4.The present embodiment input swash piezoelectric voltage signal successively through input stage, filtering stage and single-ended transfer difference circuit realiration to the process of simulating signal, be converted to after digital quantity through analog to digital conversion circuit, digital phase sensitivity detection process is carried out by digital processing circuit, detection data is transferred to master control system by single chip circuit with 485 communication modes, in addition, digital processing circuit controls Drive and Control Circuit and produces two-way dual-frequency P WM drive control signal.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by claims and equivalent thereof.
Claims (4)
1. a Mine-used I. S focusing double-frequency induced polarization method swashs electric signal receiving system, it is characterized in that, by power circuit, interface circuit, conditioning module, main control module, the composition such as shell and interface, described power circuit is interface circuit, conditioning module and main control module are powered, interface circuit respectively conditioning module inner with external terminal and receiver and main control module is connected, conditioning module mainly completes the conditioning of sharp piezoelectric voltage signal, the functions such as the generation of collection and synchronous control signal, the main completion system of main control module controls, the functions such as parameters of electrical induction display and data processing, utilize the present invention, can realize high frequency amplitude, low frequency amplitude, high frequency absolute phase, low frequency absolute phase, apparent resistivity, depending on the measurement of the parameters of electrical inductions such as Swing frequency, display and to store and to the synchro control of transmitter and data display.
2. Mine-used I. S focusing double-frequency induced polarization method according to claim 1 swashs electric signal receiving system, and it is characterized in that, described power circuit can produce the 3 mutually isolated power supplys in tunnel, is respectively interface circuit, conditioning module and main control module and powers.
3. Mine-used I. S focusing double-frequency induced polarization method according to claim 1 swashs electric signal receiving system; it is characterized in that, described interface circuit comprises usb communication protection circuit, input signal protection circuit, exports control signal isolation protective circuit, RS-485 communication isolating protection circuit.
4. Mine-used I. S focusing double-frequency induced polarization method according to claim 1 swashs electric signal receiving system, and it is characterized in that, described main control module is Mine-used I. S man-machine interface.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796329A (en) * | 2020-07-20 | 2020-10-20 | 吉林大学 | Electric source dragging type electromagnetic detection device and method for urban deep underground space |
| CN112255691A (en) * | 2020-11-09 | 2021-01-22 | 高军 | Method for detecting deep fracture geology by induced polarization composite frequency |
| CN117558117A (en) * | 2024-01-12 | 2024-02-13 | 山东省煤田地质规划勘察研究院 | Intelligent landslide monitoring and early warning device and method based on pseudo-random signal excitation method |
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| CN205229476U (en) * | 2015-10-27 | 2016-05-11 | 中国矿业大学(北京) | Mining ann's type focus dual -frenquency induced polarization method swashs electric signal reception system |
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2015
- 2015-10-27 CN CN201510707171.2A patent/CN105204074A/en active Pending
Patent Citations (5)
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| US6208249B1 (en) * | 1997-09-03 | 2001-03-27 | Nec Corporation | Passenger detection system |
| CN102012525A (en) * | 2010-12-21 | 2011-04-13 | 吉林大学 | Distribution type multi-parameter deep electromagnetic section imaging system and measuring method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796329A (en) * | 2020-07-20 | 2020-10-20 | 吉林大学 | Electric source dragging type electromagnetic detection device and method for urban deep underground space |
| CN111796329B (en) * | 2020-07-20 | 2021-04-13 | 吉林大学 | Electric source dragging type electromagnetic detection device and method for urban deep underground space |
| CN112255691A (en) * | 2020-11-09 | 2021-01-22 | 高军 | Method for detecting deep fracture geology by induced polarization composite frequency |
| CN112255691B (en) * | 2020-11-09 | 2024-02-02 | 高军 | Deep fracture geological method for detecting excitation composite frequency |
| CN117558117A (en) * | 2024-01-12 | 2024-02-13 | 山东省煤田地质规划勘察研究院 | Intelligent landslide monitoring and early warning device and method based on pseudo-random signal excitation method |
| CN117558117B (en) * | 2024-01-12 | 2024-05-31 | 山东省煤田地质规划勘察研究院 | Intelligent landslide monitoring and early warning device and method based on pseudo-random signal excitation method |
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Application publication date: 20151230 |