CN103149593A - Method and device for solving field source stability of natural electric field geophysical prospecting instrument - Google Patents
Method and device for solving field source stability of natural electric field geophysical prospecting instrument Download PDFInfo
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Abstract
Provided is a method and a device for solving field source stability of a natural electric field geophysical prospecting instrument. The device for solving field source stability of the natural electric field geophysical prospecting instrument gathers natural electric field source data by using n wireless data collectors to adopt network type combination or distributing type combination to wirelessly control the n data collectors, sample and detect simultaneously. Due to using the n data collectors and not using the same power supply without common mode interference, so that the electrode sensor portion can be shared and used in serial; the n data collectors are connected with a main controller without cables, adopt a wireless launching module to launch data which are gathered and can flexibly and changeably layout measurement. The method and the device for solving field source stability of the natural electric field geophysical prospecting instrument not only omits a clumsy power supply portion by using a manual electrical method to explore, but also solves the defects of instability of the natural electric field source by using a natural electric method to explore, and acquires relatively stable natural electric field source. A pleased electric method geophysical prospecting data can be acquired by using the method to analyze and judge the measuring data, and so that a significant drawback that the field source of the current natural electric field type geophysical prospecting instrument is unstable is overcome.
Description
Technical field
The measurement that the present invention relates to the exploration of International Classification of Patents G01V3/00 electric or magnetic or detection, terrestrial magnetic field characteristic is magnetic declination or magnetic deviation technical field for example, especially a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument.
Background technology
In prior art, geophysical prospecting technology research is widely used, noticeable based on the technical development of natural electric field geophysical measurement, especially it is to have excellent specific property aspect the accuracy of interference free performance and data more outstanding, in the new development that this class constantly obtains technology with through the beginning based on Natural electromagnetic field as field source, so in the omission conventional art, the power-supply unit part of heaviness, make its device significantly light, quick, this also obtains fast popularization with regard to further promotion technology; Yet because natural field source itself has easy variation, unsettled characteristic, prior art must carry out the work to keep measuring accuracy and antijamming capability to this, still, can not break away from like this a puzzlement that changes at any time of natural field source at all.
In known technology, but research and improved list of references for foregoing problems are less, especially the Patents document is also few, such as, Chinese patent application 201110170413.0 relates to a kind of high-precision natural electric field geophysical prospecting measurement instrument, comprise data acquisition module, master controller, data memory module and man-machine interface, described master controller is connected with data acquisition module, data memory module, man-machine interface respectively; Comprise described the data acquisition module potential electrode, the first power frequency that connect successively suppress circuit, decay gain circuitry, frontend amplifying circuit, the second power frequency inhibition circuit, programmable amplifying circuit, program control filtering circuit, detecting circuit, A/D convertor circuit, and described A/D convertor circuit is connected with master controller.
Chinese patent application 201020128870.4 relates to a kind of high density natural electric field frequency-selecting physical prospecting admeasuring apparatus of geophysical survey surveying instrument.Comprise electrode group, electrode selection circuit, selective frequency amplifier circuit and controller.Based on the theoretical foundation of natural alternative electric field frequency-selecting geophysical measurement method, traditional bipolar electrode measurement pattern is improved to the multi-electrode measurement pattern, can accurately arrange electrode before measurement; By changing the input selection of electrode group, can obtain more measurement data in measuring process, form two dimension or three-dimensional picture, measurement result accurately and reliably and intuitively.
86,201,631 1 kinds of Chinese patent application are utilized natural alternative electric field exploration underground hydrological, underground heat, the portable microcomputer based autofrequency-selecting physical prospecting admeasuring apparatus of engineering geological problems. and the selection work frequency is 25,67,170 hertz.Owing to having adopted Control System of Microcomputer, and is furnished with mini-printer, can once sequentially print at the scene abnormal curve figure and the corresponding data of three frequencies, the on-the-spot geology conclusion that obtains. adopt one chip microcomputer as intelligent controller, automatically the gain of control inputs signal and frequency-selecting.
Chinese patent application 201120214308.8 relates to a kind of high-precision natural electric field geophysical prospecting measurement instrument, comprise data acquisition module, master controller, data memory module and man-machine interface, described master controller is connected with data acquisition module, data memory module, man-machine interface respectively; Comprise described the data acquisition module potential electrode, the first power frequency that connect successively suppress circuit, decay gain circuitry, frontend amplifying circuit, the second power frequency inhibition circuit, programmable amplifying circuit, program control filtering circuit, detecting circuit, A/D convertor circuit, and described A/D convertor circuit is connected with master controller.
201,080,030,843 1 kinds of electromagnetic field measurements equipment of Chinese patent application are used for the high-sensitivity measurement intensive electromagnetic field that has encapsulated the very small region of electron device wherein.Based on the amplitude level control signal (eb) from calculation control unit (40) supply, adjusted the amplitude level of flashlight (pf) by analyzer (34) with respect to the angle of the plane of polarization of flashlight (pf) by adjusting analyzer (34).Frequency spectrum (ea) based on the electric signal (ed) of being measured by RF spectrum analyzer (39) is fed to analyzer (34) with amplitude level control signal (eb) from calculation control unit (40).The amplitude level ratio that will be included between the carrier and sideband in the flashlight (ph) that incides on optical receiver (38) is controlled to be fixed value.
at present, for natural electric field physical prospecting instrument equipment, owing to utilizing Natural electromagnetic field to omit heavy power pack as field source, have light, the distinguishing feature such as quick, meet the physical prospecting instrument light, the development trend of miniaturization, be widely used in actual use, also obtain great achievement, but because natural field source is a field source that changes at any time, constantly all changing, this badly influences the physical prospecting data accuracy in later stage, because the changeability of field source or uncertainty, compare knowability and the stability of the field source of artificial resistivity prospecting, just there is huge difference, can not be judged accurately, even cause great error.
Summary of the invention
goal of the invention of the present invention is to provide a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument, n Wireless data acquisition unit Adoption Network type or distributed combination are by n data collector while sampled measurements of master controller controlled in wireless, to collect the natural electric field field source data of same time, sampled measurements has the consistance of time like this, also obtain the consistance of field source, solve the unsettled problem of natural electric field temporal evolution field source, thereby guarantee the accurate level of geophysical measurement with the instability that overcomes natural electric field thereby obtain relatively stable field source.
Realize that goal of the invention measure of the present invention is: master controller is realized sampled measurements simultaneously by controlled in wireless 1-n data collector, to collect the natural electric field field source data of same time.
Especially, wherein, data acquisition unit is connected with electrode sensor, and electrode sensor is placed in ground to be measured.Wherein 1-n data collector, all use high performance 24 delta sigma A/D converters to realize feeble signal is efficiently changed, and signalization detects and follows, and guarantees the time of measurement and the consistance of frequency, realizes measuring simultaneously completely.
Principle of the present invention is, for solving this significant drawback that changes at any time of natural electric field field source, only depend on provides measuring accuracy and antijamming capability can not solve natural field source to change at any time at all, to thoroughly solve the variability at any time of natural electric field, the most direct is exactly effectively the field source that uses the natural electric field of same time, such field source is exactly relative stationary field, meets the electrical method physical prospecting to the demand of field source, electrical method physical prospecting data and the result that can obtain being satisfied with very much.
the invention has the advantages that, by adopting the mode of controlled in wireless, can realize a host computer control n data collector, n Wireless data acquisition unit Adoption Network type or distributed combination layout are measured, due to the advanced technology that adopts controlled in wireless, make efficient and precision realize improving greatly, the quantity of data acquisition unit can increase according to the needs that reality is used or reduce, can gather the field source of the natural electric field that measures the same time in the natural field source that changes at any time, meet the requirement of the relative measurement analysis of electrical method physical prospecting, obtain in actual use important breakthrough, both omitted the power pack of artificial resistivity prospecting heaviness, obtained again metastable natural electric field field source, convenient and swift, intelligent strong, owing to using n data collector not produce common mode interference, the partial electrode sensor shares, saving resource, can solve the shortcoming that Natural electromagnetic field changes at any time at all, such measurement data is analyzed judgement just can realize judgement more accurately, overcomes the unsettled significant drawback of present natural electric field class geophysical prospecting equipment field source.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the master controller block diagram in the present invention
Fig. 3 be in the present invention the Host Controller Architecture schematic diagram
Fig. 4 be in the present invention the embodiment schematic diagram
Embodiment
Further illustrate below by way of embodiments and drawings.
As described in accompanying drawing 1, master controller is by controlled in wireless 1-n data collector while sampled measurements, to collect the natural electric field field source data of same time.Wherein, data acquisition unit is connected with electrode sensor, and electrode sensor is placed in ground to be measured.
As described in accompanying drawing 2, master controller comprises wireless control module, man-machine dialog interface module and Data Collection memory module.Master controller is controlled the order of data acquisition unit emission measurement and is collected measurement data by wireless transmitter module, data acquisition unit is controlled by high precision clock and is connected with electrode sensor, electrode sensor is placed in ground to be measured, by the simultaneously-measured order of main frame emission, the data acquisition unit rear realization that receives orders is measured simultaneously, measures the field source of the natural electric field of the same time in the natural field source that changes at any time with collection.
As described in accompanying drawing 3, data acquisition unit comprises wireless control module and digital sampling and processing.
As embodiment, the present invention forms natural electric field physical prospecting instrument by a master controller, 1-n number of units according to collector and electrode sensor, and with high precision clock and wireless control module, data acquisition unit connecting electrode sensor senses device, complete multichannel data acquisition simultaneously by the main frame master controller by wireless command and measure under high-precision clock control, reach the purpose of obtaining same time natural electric field field source.
As shown in Figure 4, in the present embodiment, master controller is comprised of governor circuit, man-machine dialog interface, data storage derivation module and wireless control module; The 1-n number of units is according to being comprised of wireless control module and data acquisition module in collector, and data acquisition module suppresses circuit, prime signal conditioning circuit and signal acquisition circuit by power frequency and consists of; Wherein the n number of units is comprised of positive and negative the two poles of the earth electrode according to the part of the electrode sensor in collector, identical electrode and stube cable are realized general, signal in n data collector is inputted, use high performance 24 delta sigma A/D converters to realize feeble signal is efficiently changed, use high precision clock to control and realize n data collector sampled measurements simultaneously, guarantee the time of measurement and the consistance of frequency.
In aforementioned, control simultaneously the pattern of n data collector owing to using master controller, got rid of the common mode interference between electrode sensor, it is characterized in that, electrode sensor is comprised of a plurality of positive and negative the two poles of the earth electrode bar, in order to save electrode bar and stube cable, identical electrode bar and stube cable are realized sharing; Through being processed by master controller after data acquisition unit, master controller is numbered to distinguish to corresponding every group of data organizes data, then is transformed into multiple signals output, measures when realizing signal; For improving the complete machine antijamming capability, power frequency suppresses circuit and adopts the adjustable active double T rejection filter of Q value, and the power frequency of filtering 50Hz and 60Hz is disturbed, and decays to 50dB; The prime signal conditioning circuit is according to the power of signal, and self-adaptation is switched corresponding enlargement factor, is divided into 4 enlargement factor X1, X10, X100, X1000; Wireless control module comprises the GPS module, and governor circuit adopts 32 high-performance ARM chip STM32F103, and signal acquisition circuit adopts 16 high precision analogue conversion chip AD8329.The GPS module adopts the high-performance GPS module of being produced by U-BLOX company.
In the present invention, each potential electrode on the ground can equidistant any layout, and method of synchronization aspect adopts GPS to carry out the precise synchronization of clock.
The present embodiment has the following advantages:
One, solve the field source stability of natural electric field: use the method and device can gather the field source of the natural electric field that measures the same time in the natural field source that changes at any time, obtain metastable natural electric field field source, solved the unsettled significant drawback of present natural electric field class geophysical prospecting equipment field source.
Two, data are accurate: a plurality of data acquisition units are sampled measurements simultaneously, fully guarantees the accuracy of measurement data.
Three, light and fast: omit the power pack of artificial resistivity prospecting heaviness, obtained again stable natural electric field field source, light more accurate.
Four, flexible and convenient to use: owing to adopting wireless control module, can arbitrary placement, it is quite convenient to use, effectively prevents because cable causes confusion too much.
Five, saving resource, electrode sensor are realized sharing, and saving resource reduces costs.
In above embodiment, do not reach the employing prior aries such as other necessary technologies that relate to enforcement of narration, enumerate no longer successively detailed description.
in the present invention, master controller is controlled data acquisition unit issue measuring command and is collected measurement data by wireless transmitter module, data acquisition unit is controlled by high precision clock and is connected with electrode sensor, electrode sensor is placed in ground to be measured, by the simultaneously-measured order of main frame emission, the data acquisition unit rear realization that receives orders is measured simultaneously, measure the field source of the natural electric field of the same time in the natural field source that changes at any time with collection, do not use same power supply there is no common mode interference owing to using n data collector, electrode sensor part can share and go here and there use, both omitted the power pack of artificial resistivity prospecting heaviness, obtained again metastable natural electric field field source, the theory that meets resistivity prospecting fully, use such method to analyze to measurement data the electrical method physical prospecting data that judgement just can obtain being satisfied with very much, overcome the unsettled significant drawback of present natural electric field class geophysical prospecting equipment field source.
The present invention is under the prerequisite that keeps original high-acruracy survey, realize n data collector sampled measurements simultaneously, consistance with time, also obtain the consistance of field source, be the equal of the signal that stable field source sends in the relative data in later stage is processed and analyzed, thoroughly solved the unsettled shortcoming of field source of natural electric field quasi-instrument, obtained in actual use important breakthrough, made efficient and precision realize improving greatly.
Compared with prior art, the present invention has the following advantages:
One, solve the field source stability of natural electric field: use the method and device can gather the field source of the natural electric field that measures the same time in the natural field source that changes at any time, obtain metastable natural electric field field source, solved the unsettled significant drawback of present natural electric field class geophysical prospecting equipment field source.
Two, data are accurate: a plurality of data acquisition units are sampled measurements simultaneously, fully guarantees the accuracy of measurement data.
Three, light and fast: omit the power pack of artificial resistivity prospecting heaviness, obtained again stable natural electric field field source, light more accurate.
Four, flexible and convenient to use: owing to adopting wireless control module, can arbitrary placement, it is quite convenient to use, effectively prevents because cable causes confusion too much.
Five, saving resource, electrode sensor are realized sharing, and saving resource reduces costs.
In above embodiment, do not reach the employing prior aries such as other necessary technologies that relate to enforcement of narration, enumerate no longer successively detailed description.
Claims (7)
1. method and device that solves the field source stability of natural electric field physical prospecting instrument, it is characterized in that: n Wireless data acquisition unit Adoption Network type or distributed combination layout are measured, master controller is by controlled in wireless n data collector while sampled measurements, to collect the natural electric field field source data of same time.
2. a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument as claimed in claim 1, it is characterized in that: master controller is controlled the order of data acquisition unit emission measurement and is collected measurement data by wireless transmitter module, data acquisition unit is controlled by high precision clock and is connected with electrode sensor, electrode sensor is placed in ground to be measured, by the simultaneously-measured order of main frame emission, the data acquisition unit rear realization that receives orders is measured simultaneously, measures the field source of the natural electric field of the same time in the natural field source that changes at any time with collection.
3. a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument as claimed in claim 1, is characterized in that, master controller comprises wireless control module, man-machine dialog interface module and Data Collection memory module.
4. a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument as claimed in claim 1, is characterized in that, data acquisition unit comprises wireless control module and digital sampling and processing.
5. a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument as claimed in claim 1, is characterized in that, digital sampling and processing suppresses circuit, prime signal conditioning circuit and AD sampling Acquisition Circuit by power frequency and forms.
6. a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument as claimed in claim 1, is characterized in that, master controller is comprised of governor circuit, man-machine dialog interface, data storage derivation module and wireless control module.
7. a kind of method and device that solves the field source stability of natural electric field physical prospecting instrument as claimed in claim 1, control simultaneously the pattern of N data collector owing to using master controller, got rid of the common mode interference between electrode sensor, it is characterized in that, electrode sensor is comprised of a plurality of positive and negative the two poles of the earth electrode bar, in order to save electrode bar and stube cable, identical electrode bar and stube cable are realized general; Through being processed by master controller after data acquisition unit, master controller is numbered to distinguish to corresponding every group of data organizes data, then is transformed into multiple signals output storage.
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Cited By (5)
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| CN103487836A (en) * | 2013-10-11 | 2014-01-01 | 钟世航 | Electrical prospecting multi-electrode multi-power supply unit system and prospecting method thereof |
| CN104749636A (en) * | 2015-04-09 | 2015-07-01 | 北京中矿大地地球探测工程技术有限公司 | Distributed slot wave seismic prospecting system and prospecting method thereof |
| CN106950889A (en) * | 2017-04-27 | 2017-07-14 | 中南大学 | A kind of natural electric field wireless senser and automatically descend pollution monitor system |
| WO2020057019A1 (en) * | 2018-09-21 | 2020-03-26 | 安徽惠洲地质安全研究院股份有限公司 | Parallel acquisition system and method employing multiple geophysical fields for exploration |
| CN111538091A (en) * | 2020-06-16 | 2020-08-14 | 湖南普奇地质勘探设备研究院（普通合伙) | Multi-channel natural electric field collector |
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Application publication date: 20130612 |