CN104749636A - Distributed slot wave seismic prospecting system and prospecting method thereof - Google Patents
Distributed slot wave seismic prospecting system and prospecting method thereof Download PDFInfo
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Abstract
The invention discloses a distributed slot wave seismic prospecting system. The distributed slot wave seismic prospecting system comprises a detonator, a seismic source trigger recorder, distributed acquiring stations and a master controller. The invention further discloses a prospecting method of the distributed slot wave seismic prospecting system. The distributed slot wave seismic prospecting system is ingenious and reasonable in structural design; by adopting the design scheme of programmed-controllable signals and using 24 bits ofDelta-Sigma type high-precision ADC to sample, more alternative schemes are provided for signal acquisition. Meanwhile, with the acquiring stations and low-power-consumption and portable design of the single acquiring station, the distributed slot wave seismic prospecting system is more convenient during actual use, and prospecting efficiency and accuracy are greatly improved. The prospecting method is simple, easy to implement, simple to operate and time and labor saving, and prospecting efficiency and accuracy are greatly improved.
Description
Technical field
The present invention relates to geological exploration in coal mine Instrument technology field, be specifically related to a kind of distributed seam seismic exploration system and method for exploration thereof.
Background technology
Coal is the important energy source of China, and in the structure proportion of AND ENERGY RESOURCES CONSUMPTION IN CHINA, coal accounts for more than 70% of the disposable energy, and coal production has very important low level in Chinese national economy.The most coal field geology complex structure of China, in coal production, causes geologic hazard situation to happen occasionally because of the tectonic structure of complexity.The method that the exploration of colliery, current ground is conventional---3-d seismic exploration is larger by the influence of topography, and be difficult to differentiate drop and be less than the small-sized tectonic structures such as the tomography of 5m, down-hole geophysical prospecting method is also because the factors such as detection range is short, accurate rate variance are difficult to meet need of production, and down-hole channel wave seismic technology rely on its easy construction, influenced factor little, resolve precision advantages of higher, become Geological Structure in Coal Mine gradually and detect optimal physical prospecting means.Therefore the slot wave prospecting technique of research and development advanced person and instrument and equipment just seem very important.
Summary of the invention
For above-mentioned deficiency, an object of the present invention is, provides a kind of smart structural design, rationally, can improve the distributed seam seismic exploration system of exploration efficiency and precision.
An object of the present invention is, provides a kind of method of exploration of above-mentioned distributed seam seismic exploration system.
For achieving the above object, technical scheme provided by the present invention is:
A kind of distributed seam seismic exploration system, it comprises:
Blaster, for providing instantaneous high pressure detonating primer;
Focus trigger recording instrument, for detecting the voltage signal of detonating power supply, blasting machine, detonator formation current return, and producing trigger pip, will record in the triggered time and store simultaneously, and being beneficial to aboveground data processing and inverting;
Distributed capture station, for slot wave vibration signal is converted to voltage signal, through signal conditioning circuit conditioning, then through analog to digital conversion, then carries out data acquisition and stores data;
Main control computer, main control computer carries out time synchronized calibration by GPS module, and can carry out the analyzing and processing of optimum configurations and related data and the read operation function of log file to distributed capture station, focus trigger recording instrument and blaster.
As a modification of the present invention, described main control computer comprises GPS module and is preinstalled with the PC of corresponding software, and this PC is provided with network communication interface; Described corresponding software comprises network communication protocol development module, man machine operation interface module, acquisition station parameter setting module, the data read module of acquisition station and storage and each acquisition station condition monitoring.
As a modification of the present invention, described focus trigger recording instrument comprises STM32 and the GPS module be connected with this STM32 respectively, temperature compensating crystal oscillator TCXO, TF storage card, function button, state display module, battery voltage sensing module, trigger element, current transformer, auxiliary power circuit and network communication interface.
As a modification of the present invention, described distributed capture station comprises:
Wave detector, receives the signal from slot wave vibrations and is converted to voltage signal;
Signal conditioning circuit, the signal exported by wave detector after signal conditioning circuit to adapt to ∑-Δ ADCLK module to the requirement of level;
SPI universal serial bus, the simulating signal that transmission ∑-Δ ADCLK module produces is to distributed capture main control unit STM32;
Distributed capture main control unit STM32, accepts the data on spi bus and is stored in SOPC;
Temperature compensating crystal oscillator TCXO, for system provides clock signal accurately;
SOPC, adopts TF card, for the data of storage of collected;
Auxiliary power circuit, comprises power conversion module and Ni-MH battery, for distributed capture station powers;
GPS module, carries out synchronously to distributed capture station verification clock;
24 ∑-Δ ADCLK modules, are converted into simulating signal by the signal after conditioning, are transferred to spi bus; Function button, state display module, after distributed capture station acquisition function button is pressed, start image data, state display module shows the working condition at distributed capture station in real time.
As a modification of the present invention, have employed programmable amplifier in described signal conditioning circuit and carry out the program control of impedance matching and signal, described signal conditioning circuit is provided with low-pass filter, rejection filter and radome.Low-pass filter reaches the interference of filtering nature, adds rejection filter and adds that radome reduces the electromagnetic noise of fair interference and occurring in nature.
As a modification of the present invention, described distributed capture station also comprises battery voltage sensing module.Battery voltage sensing module is used for detecting the voltage of battery, if brownout, the pilot lamp at distributed capture station can remind operating personnel's electricity not enough.
As a modification of the present invention, described distributed capture station also comprises network communication interface, for the communication at main control computer and distributed capture station.
A method of exploration for above-mentioned distributed seam seismic exploration system, it comprises the following steps:
(1) GPS time service, host parameter configuration: after system starts, each distributed capture station, focus trigger recording instrument and main control computer first verify clock respectively by GPS module carry out synchronously aboveground aboveground, and operating personnel are to being that parameter is configured;
(2) main control computer sends signal: main control computer sends signal by network communication interface to distributed capture station, focus trigger recording instrument;
(3) distributed capture station acknowledge(ment) signal: distributed capture station receives signal by network communication interface, and sets parameter;
(4) distributed capture station acquisition function button is pressed: after optimum configurations is good, and distributed capture station acquisition function button is pressed and starts image data by operating personnel;
(5) distributed capture station gathers and storage signal: the data collected are stored in TF storage card by distributed capture station;
(6) blasting machine starts: after operating personnel recognize that all working is ready, start to start blasting machine;
(7) focus trigger recording instrument accepts trigger pip and the stored record time: the triggering produced is recorded the time this moment to STM32, STM32 and is stored in TF storage card by trigger element
(8) main control computer sends readout data signal: main control computer by network communication interface to distributed capture station, focus trigger recording instrument send readout data signal;
(9) main control computer accepts data: main control computer accepts the data of distributed capture station collection and data writing time of focus trigger recording instrument by network communication interface, with in aboveground data processing and inverting, realizes the object of exploration.
Beneficial effect of the present invention is: distributed seam seismic exploration system structure design provided by the invention is ingenious, reasonable, before down-hole operation, each equipment is full of electricity, each distributed capture station and focus trigger recording instrument adopt and carry out time synchronized calibration respectively by GPS module, by the side of main control computer by network communication on the ground
Formula carries out parameter setting operation; After going into the well, the mode that wave detector adopts anchor pole to connect carries out the vibration of reception focus, and distributed capture station state under normal circumstances, presses acquisition function button, starts to record data and is stored in TF storage card.When blaster presses startup button, detonating power supply, blasting machine, detonator form current return, current transformer detects that current signal transfer goes out voltage signal, and trigger element detects voltage signal and produces trigger pip, and trigger recorder will record and be stored in TF storage card in the triggered time.After down-hole gathers, by each equipment delivery to ground, the data utilizing main control computer to be stored at each distributed capture station and the time interocclusal record of focus trigger recording instrument transfer to main control computer by wire communication, according to the triggered time, raw data are cut into process desired data.Utilize data processing interpretation software to carry out data processing explanation, complete slot wave transmission beam method or reflection survey.Must, there are two large advantages: the design proposal that 1, the present invention's distributed seam seismic exploration system employing signal is program-controlled, coordinates 24 delta sigma type high-precision adcs to sample, for signals collecting provides more more options scheme; 2, the distributed seam seismic exploration system of the present invention's development, adopts multiple acquisition station, the low-power consumption of single acquisition station, portable design, more convenient when reality uses, and greatly improves exploration efficiency and precision.
The step of method of exploration provided by the invention is simple and easy, is easy to realize, simple to operate, time saving and energy saving, greatly improves exploration efficiency and surveying accuracy.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Accompanying drawing explanation
Fig. 1 is structural schematic block diagram of the present invention.
Fig. 2 is workflow diagram of the present invention.
Embodiment
See Fig. 1 and Fig. 2, the distributed seam seismic exploration system of the one that the present embodiment provides, it comprises: blaster 4, focus trigger recording instrument 3, distributed capture station 2 and main control computer 1.
Concrete, blaster 4, for providing instantaneous high pressure detonating primer; In the present embodiment, after wireline inspection of blowing out is qualified, switch is forwarded to (charging) position, blasting machine is sounded a buzzer sound, shinny through 10-20 charging indicator light in second, show that main capacitor both end voltage is full of, at this moment switch is forwarded to (blowing out) position, blasting machine produces instantaneous pressure, realizes the object of detonating primer.
Focus trigger recording instrument 3, for detecting the voltage signal of detonating power supply, blasting machine, detonator formation current return, and producing trigger pip, will record in the triggered time and store simultaneously, and being beneficial to aboveground data processing and inverting; Described focus trigger recording instrument comprises STM32 301 and the GPS module 302, temperature compensating crystal oscillator TCXO 303, TF storage card 304, function button, state display module 305, battery voltage sensing module 306, current transformer 307, trigger element 308 and the network communication interface 311 that are connected with this STM32 301 respectively and auxiliary power circuit.Wherein auxiliary power circuit is made up of power conversion module 309 and Ni-MH battery 310.Clock when STM32 301 adopts automorph, simultaneously with function and the module such as pre-service, system parameter setting, instrument state indicating module of hardware driving exploitation, reading and writing data, storage, data communication module, data; GPS module 302 just carries out time synchronized calibration originally to focus trigger recording instrument aboveground; Temperature compensating crystal oscillator TCXO303 provide accurate clock signal.Operating personnel get hold of the time, press function button and start focus trigger recording instrument, press blaster 4 and start button, current transformer 307 detects the electric current formed by detonating power supply, blasting machine 4, detonator in current return, and produce voltage signal, after trigger element 308 processes, output signal to STM32 301, STM32 301 to record the burst time and be stored in TF storage card.Once gathering can by the reset key realization acquisition and recording next time in function button after terminating.Last main control computer carries out communication by network communication interface 311, and the time data of record is transferred to main control computer 1.
Distributed capture station 2, for slot wave vibration signal is converted to voltage signal, through signal conditioning circuit conditioning, then through analog to digital conversion, then carries out data acquisition and stores data; Concrete, described distributed capture station comprises: comprise wave detector (Geophone) 210, signal conditioning circuit 209 and distributed capture main control unit STM32 201, auxiliary power circuit, battery voltage sensing module 202, GPS module 203, function button, state display module 204, temperature compensating crystal oscillator TCXO 205, SOPC 206, SPI universal serial bus 207,24 ∑-Δ AD
cLKmodule 208 and network communication interface 213.The voltage condition at battery voltage sensing module 202 Real-Time Monitoring distributed capture station; GPS module 203 automatic time synchronous calibration; Function button, state display module 204 start and close the ruuning situation at distributed capture station and display distributed capture station; Temperature compensating crystal oscillator TCXO 205 provides clock signal accurately.Slot wave vibration signal is converted to voltage signal by wave detector 210, and each distributed capture station controls 4 independently acquisition channel synchronous acquisitions, nurses one's health through signal conditioning circuit 209, then through 24 ∑s-Δ AD
cLKmodule 208 carries out analog to digital conversion, is then transmitted by SPI universal serial bus 207, eventually passes distributed capture main control unit STM32 201 and carries out data acquisition and store data in SOPC206.Auxiliary power circuit is powered to distributed capture station 2.
In the present embodiment, preferably, the Main Function of signal conditioning circuit 209 be by the voltage signal exported by wave detector 210 after signal conditioning circuit 209 to adapt to 24 ∑s-Δ AD
cLKthe requirement of module 208 pairs of level.In the present embodiment, be generally 1uV ~ 1V from wave detector 210 voltage signal scope out, detect that complete seismic signal has very high requirement to signal conditioning circuit 209: high input impedance (impedance matching), high cmrr CMRR, low noise, low drifting, gain are optional etc.In the present embodiment adopt make instrument miniaturization and integrated, reduce components and parts, simplify circuit and reduce system noise.Then carry out impedance transformation through programmable amplifier to carry out programming amplifying simultaneously provide voltage gain to adapt to the requirement of AD conversion to level to improve its acquisition precision, again by low-pass filtering to filter high frequency interference and noise, finally add that radome reduces the electromagnetic noise of Hz noise and occurring in nature by power frequency notch filter with to Whole Equipment.It is program-controlled that this programmable amplifier has low-down bias voltage, low excursion with temperature, high cmrr, low noise and gain.Programmable amplifier adopts Automatic level control, controls the mutual simplicity of program control multiple raising system module and versatility by changing low and high level.Any unit of system is all by near for noise minimum, and the system of ensure that meets high precision.
In the present embodiment, preferably, in distributed capture station, introduce the program-controlled design proposal of signal, coordinate 24 ∑-Δ AD simultaneously
cLKmodule 208 is sampled, for signals collecting provides more more options scheme.In the present embodiment, 24 ∑-Δ AD
cLKhyperchannel 24 industrial analog to digital converters are used in module 208.This converter inside is integrated with multiple independently high-order chopped wave stabilizing modulator and Finite Impulse Response filter, can realize four-way synchronized sampling, supports high speed, high precision, low-power consumption, low speed 4 kinds of mode of operations; This converter has excellent AC and DC characteristic, high sampling rate, has high s/n ratio (SNR), the feature of low offset drift in certain bandwidth.This converter selects mode of operation by arranging corresponding I/O pin simultaneously, and without the need to register programming, its data export optional frame synchronization or SPI serial line interface, are convenient to be connected to DSP, FPGA and microcontroller.
In the present embodiment, preferably, distributed capture main control unit 201 adopts low power processor STM32 as main control chip (supporting 5 serial ports).Clock when STM32 adopts automorph, simultaneously with function and the module such as pre-service, system parameter setting, instrument state indicating module of hardware driving exploitation, reading and writing data, storage, data communication module, data.Input signal inputs 24 ∑s-Δ AD through signal conditioning circuit 209
cLKmodule 208,24 ∑-Δ AD
cLKmodule 208 adopts and synchronously triggers sampling.Main control chip, in clock alignment situation, can adopt condition to trigger starting 24 ∑s-Δ AD
cLKmodule 208 is sampled.AD sampling trigger signal produces fixed sampling frequency signal (4-20kHz) by main control chip.AD sampled data adds markers stored in TF storage card, is beneficial to aboveground data processing and inverting.
In the present embodiment, preferably, clock crystal oscillator adopts temperature compensating crystal oscillator TCXO 205, and this temperature compensating crystal oscillator is at-5 DEG C
In the temperature range of to+80 DEG C, only have the error of maximum ± 0.28ppm, in standard output load variations ± 5%, maximum error ± 0.1ppm, in voltage vcc ± 5% changes, in use First Year, maximum error is ± 0.1ppm.Free-run (Inclusive of calibration tolerance at25 DEG C in use 20 years, frequency vs.change in temperature, change in supply voltage (± 5%), loadchange 15pF (± 5%), reflow soldering process) precision can keep in maximum error ± 4.6ppm.
Main control computer 1 is the parametric controller of distributed seam seismic exploration system, mainly realizes the functions such as the reading of optimum configurations, data and the log file to each distributed capture station 2, focus trigger recording instrument 3.In the present embodiment, adopt remote control software based on VC++ platform as main control computer.
In the present embodiment, before down-hole operation, main control computer generates control signal and sends to each distributed capture station 2, focus trigger recording instrument 3, and wherein control signal comprises the optimum configurations to each distributed capture station, focus trigger recording instrument.After borehole operation completes, main control computer generates control signal and sends to each distributed capture station 2, focus trigger recording instrument 3, and wherein control signal is mainly used in each distributed capture station 2, the image data of focus trigger recording instrument 3 and the reading of log file.
In the present embodiment, main control computer 1 provides human-computer interaction interface, operates system for operating personnel.The instrument parameter configuration that control signal is arranged according to operating personnel generates, and usual instrument parameter comprises: sampling rate, programming amplifying multiple, documentation time etc.
In the present embodiment, main control platform is also configured with each distributed capture station status monitoring function, and whether by synchronously setting, whether optimum configurations set, and monitors the running status of instrument.
Before detecting by distributed seam seismic exploration system, first need some preliminary works, each equipment is full of electricity, fix anchor pole and wave detector, place detonator etc.Fig. 2 is the workflow diagram of the distributed seam seismic exploration system of the present invention.As shown in Figure 2, a kind of method of exploration of above-mentioned distributed seam seismic exploration system, it comprises the following steps:
S201:GPS time service, host parameter configuration: after system starts, each distributed capture station, focus trigger recording instrument and main control computer first verify clock respectively by GPS module carry out synchronously aboveground aboveground, and operating personnel are configured systematic parameter; Comprise: the sampling rate, programming amplifying multiple, documentation time etc. at every platform distributed capture station;
S202: main control computer sends signal: main control computer sends signal by network communication interface to distributed capture station, focus trigger recording instrument;
S203: distributed capture station acknowledge(ment) signal: distributed capture station receives signal by network communication interface, and sets parameter;
S204: distributed capture station acquisition function button is pressed: after optimum configurations is good, distributed capture station acquisition function button is pressed and starts image data by operating personnel;
S205: distributed capture station gathers and storage signal: the data collected are stored in TF storage card by distributed capture station;
S206: blasting machine starts: after operating personnel recognize that all working is ready, start to start blasting machine;
S207: focus trigger recording instrument accepts trigger pip and the stored record time: the triggering produced is recorded the time this moment to STM32, STM32 and is stored in TF storage card by trigger element
S208: main control computer sends readout data signal: main control computer by network communication interface to distributed capture station, focus trigger recording instrument send readout data signal;
S209: main control computer accepts data: main control computer accepts the data of distributed capture station collection and data writing time of focus trigger recording instrument by network communication interface, with in aboveground data processing and inverting, realizes the object of exploration.
After once collection terminates, the reset key directly pressing focus trigger recording instrument just can realize the record of second time time.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the present invention.As described in the above embodiment the present invention, adopt structure same or similar with it and other system and method for obtaining all in scope.
Claims (8)
1. a distributed seam seismic exploration system, it is characterized in that, it comprises:
Blaster, for providing instantaneous high pressure detonating primer;
Focus trigger recording instrument, for detecting the voltage signal of detonating power supply, blasting machine, detonator formation current return, and producing trigger pip, will record in the triggered time and store simultaneously, and being beneficial to aboveground data processing and inverting;
Distributed capture station, for slot wave vibration signal is converted to voltage signal, through signal conditioning circuit conditioning, then through analog to digital conversion, then carries out data acquisition and stores data;
Main control computer, main control computer carries out time synchronized calibration by GPS module, and can carry out the analyzing and processing of optimum configurations and related data and the read operation function of log file to distributed capture station, focus trigger recording instrument and blaster.
2. distributed seam seismic exploration system according to claim 1, is characterized in that, described main control computer comprises GPS module and is preinstalled with the PC of corresponding software, and this PC is provided with network communication interface; Described corresponding software comprises network communication protocol development module, man machine operation interface module, acquisition station parameter setting module, the data read module of acquisition station and storage and each acquisition station condition monitoring.
3. distributed seam seismic exploration system according to claim 1, it is characterized in that, described focus trigger recording instrument comprises STM32 and the GPS module be connected with this STM32 respectively, temperature compensating crystal oscillator TCXO, TF storage card, function button, state display module, battery voltage sensing module, trigger element, current transformer, auxiliary power circuit and network communication interface.
4. distributed seam seismic exploration system according to claim 1, is characterized in that, described distributed capture station comprises:
Wave detector, receives the signal from slot wave vibrations and is converted to voltage signal;
Signal conditioning circuit, the signal exported by wave detector after signal conditioning circuit to adapt to ∑-△ ADCLK module to the requirement of level;
SPI universal serial bus, the simulating signal that transmission ∑-△ ADCLK module produces is to distributed capture main control unit STM32;
Distributed capture main control unit STM32, accepts the data on spi bus and is stored in SOPC;
Temperature compensating crystal oscillator TCXO, for system provides clock signal accurately;
SOPC, adopts TF card, for the data of storage of collected;
Auxiliary power circuit, comprises power conversion module and Ni-MH battery, for distributed capture station powers;
GPS module, carries out synchronously to distributed capture station verification clock;
24 ∑-△ ADCLK modules, are converted into simulating signal by the signal after conditioning, are transferred to spi bus; Function button, state display module, after distributed capture station acquisition function button is pressed, start image data, state display module shows the working condition at distributed capture station in real time.
5. distributed seam seismic exploration system according to claim 4, it is characterized in that, have employed programmable amplifier in described signal conditioning circuit and carry out the program control of impedance matching and signal, described signal conditioning circuit is provided with low-pass filter, rejection filter and radome.
6. the distributed seam seismic exploration system according to claim 4 or 5, is characterized in that, described distributed capture station also comprises battery voltage sensing module.
7. the distributed seam seismic exploration system according to claim 4 or 5, is characterized in that, described distributed capture station also comprises network communication interface, for the communication at main control computer and distributed capture station.
8. a method of exploration for the distributed seam seismic exploration system that one of claim 1-7 is described, it is characterized in that, it comprises the following steps:
(1) GPS time service, host parameter configuration: after system starts, each distributed capture station, focus trigger recording instrument and main control computer first verify clock respectively by GPS module carry out synchronously aboveground aboveground, and operating personnel are configured systematic parameter;
(2) main control computer sends signal: main control computer sends signal by network communication interface to distributed capture station, focus trigger recording instrument;
(3) distributed capture station acknowledge(ment) signal: distributed capture station receives signal by network communication interface, and sets parameter;
(4) distributed capture station acquisition function button is pressed: after optimum configurations is good, and distributed capture station acquisition function button is pressed and starts image data by operating personnel;
(5) distributed capture station gathers and storage signal: the data collected are stored in TF storage card by distributed capture station;
(6) blasting machine starts: after operating personnel recognize that all working is ready, start to start blasting machine;
(7) focus trigger recording instrument accepts trigger pip and the stored record time: the triggering produced is recorded the time this moment to STM32, STM32 and is stored in TF storage card by trigger element
(8) main control computer sends readout data signal: main control computer by network communication interface to distributed capture station, focus trigger recording instrument send readout data signal;
(9) main control computer accepts data: main control computer accepts the data of distributed capture station collection and data writing time of focus trigger recording instrument by network communication interface, with in aboveground data processing and inverting, realizes the object of exploration.
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| CN108051851A (en) * | 2017-11-27 | 2018-05-18 | 福州华虹智能科技股份有限公司 | A kind of method of seismic prospecting and system |
| CN110231654A (en) * | 2019-06-20 | 2019-09-13 | 合肥国为电子有限公司 | A kind of channel wave seismic data collection system and method |
| CN110231655A (en) * | 2019-06-28 | 2019-09-13 | 合肥国为电子有限公司 | One kind being suitable for underground in-seam seismograph |
| CN111142154A (en) * | 2020-01-03 | 2020-05-12 | 深圳面元智能科技有限公司 | Distributed seismic data acquisition method and acquisition system |
| CN111208584A (en) * | 2020-03-03 | 2020-05-29 | 何良 | Accurate extraction method for detonation moment in underground distributed channel wave seismic exploration |
| CN111208557A (en) * | 2020-03-03 | 2020-05-29 | 何良 | Intelligent data recovery and correction method for underground distributed channel wave seismograph |
| CN113805223A (en) * | 2021-08-16 | 2021-12-17 | 南京天巡遥感技术研究院有限公司 | Seismic exploration system and processing method of data acquired by seismic exploration system |
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Application publication date: 20150701 |