CN106646619A - Novel high-precision mine double-frequency induced polarization receiver - Google Patents
Novel high-precision mine double-frequency induced polarization receiver Download PDFInfo
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- CN106646619A CN106646619A CN201611004980.8A CN201611004980A CN106646619A CN 106646619 A CN106646619 A CN 106646619A CN 201611004980 A CN201611004980 A CN 201611004980A CN 106646619 A CN106646619 A CN 106646619A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
The invention discloses a novel high-precision mine double-frequency induced polarization receiver, comprising a signal conditioning module, an AD conversion module, an FPGA processing module, a DSP processing module, a display module and a power module, wherein the power module supplies power to the signal conditioning module, the AD conversion module, the FPGA processing module, the DSP processing module and the display module; the FPGA processing module is connected with the AD conversion module, the DSP processing module and the display module respectively; and the AD conversion module is further connected with the signal conditioning module. The receiver is stable, improves the interference resistance to a great extent, can simultaneously acquire high-precision induced polarization voltage of high and low frequencies, and has the advantages of high synchronous precision of high and low frequency signals and high data processing efficiency.
Description
Technical field
The invention belongs to mineral detection technical field, specifically a kind of novel high-precision is mining Dual-frequency Ip Method receiver.
Background technology
At present, with the development of national economy, country is increasing to the demand of mineral resources.Through surveying for decades
Visit, the exploration environment of mineral resources becomes more and more severe, and the exploration to mineral resources is also more and more difficult.Therefore, raising is surveyed
The operating efficiency of spy equipment, precision, security, can greatly reduce unnecessary economic loss, improve the accuracy of exploration.
Mineral detection can be divided into time domain IP and frequency domain induced polarization method, and time domain IP actually studies mineral
The time dependent method of secondary electric potential after induced polarization, because the detecting devices of time domain IP is heavy, can hand over
Logical convenient plains region application, but the mountain area poor in grounding requirement, interference is big and orographic condition is poor, IP of time domain is just very
It is difficult.At present, mineral detection is all that, using frequency domain induced polarization method, frequency domain swashs electricity and IP of time domain in reflection underground polarization body
Ability on be suitable.But frequency domain swash electricity do not need power-off change different frequency electric current, detecting devices become light and flexible,
The advantages of improving antijamming capability.In mineral detection frequency domain induced polarization method：(1) frequency variation method, the method is the feelings in not power-off
Under condition, using twice respectively supply low-frequency current and high frequency electric measure high and low frequency voltage difference, and calculate regarding Swing frequency, but this
The method of kind can not simultaneously collect the sharp piezoelectric voltage of two kinds of frequencies；(2) double-frequency induced polarization method, this method by Central South University what after
Although a kind of Dual-frequency Ip Method receiver of geophysical exploration method of kind academician invention can realize the same of two kinds of frequency signals
Step is received, and collects sharp piezoelectric voltage signal accordingly, but, the conversion accuracy of a/d converter is low due to synchronization accuracy not enough,
The a series of factor such as the interference of effect of induced polarization and electromagnetic coupling effect, the ability of data processing of processor be weaker, leads
Cause that the precision of relevant device is low, data-handling capacity is weak, a series of phenomenons such as data are unstable occurs.
The content of the invention
The purpose of the present invention is, to overcome the deficiencies in the prior art, and to provide a kind of mining Dual-frequency Ip Method of novel high-precision and connect
Receipts machine, the stability of the receiver, antijamming capability have significant improvement, and can simultaneously collect high-precision high and low two
The sharp piezoelectric voltage of frequency is planted, and high and low frequency signal synchronization accuracy is high, data-handling efficiency is high.
Realizing the technical scheme of the object of the invention is：
A kind of novel high-precision is mining Dual-frequency Ip Method receiver, including Signal-regulated kinase, AD conversion module, FPGA process
Module, DSP processing modules, display module and power module, power module to Signal-regulated kinase, AD conversion module, FPGA at
Reason module, DSP processing modules and display module are powered, FPGA processing modules respectively with AD conversion module, DSP processing modules and aobvious
Show that module connects, AD conversion module is also connected with Signal-regulated kinase.
The effect of described Signal-regulated kinase is that the sharp piezoelectric voltage weak signal to receiving carries out pretreatment and obtains pure
Signal.
The effect of described AD conversion module is to be AD converted the pretreated purified signal of Signal-regulated kinase, will
Signal is converted into data signal.
The effect of described FPGA processing modules is the digital signal data caching to A/D module conversion, and will have been cached
Batch data is sent to DSP processing modules, and to the normal control of modules.
The effect of described DSP processing modules is the data that the transmission of FPGA processing modules comes to be carried out at corresponding algorithm
Reason, then sends again the data obtained after algorithm process to FPGA processing modules, through the control of FPGA processing modules, finally
Data are shown in display module.
The connection of described FPGA processing modules and DSP processing modules is to be bi-directionally connected.
Described Signal-regulated kinase further include frontend amplifying circuit, high-frequency filter circuit, low-frequency filter circuit, 4/
8 multiplexers, detection integrating circuit and programme-controlled gain amplifying circuit；Frontend amplifying circuit respectively with high-frequency filter circuit and low
Frequency filter circuit one end connects, and 4/8 multiplexer is connected respectively with high-frequency filter circuit and the low-frequency filter circuit other end, and 4/
8 multiplexers are also connected with detection integrating circuit, and detection integrating circuit is also connected with programme-controlled gain amplifying circuit；Wherein：
The effect of described frontend amplifying circuit is that the faint sharp piezoelectric voltage signal to receiving is amplified process；Institute
The effect of the high-frequency filter circuit stated is to extract pure high frequency in the two-frequency signal in the sharp piezoelectric voltage signal from after amplification to swash
Piezoelectric voltage signal；The effect of described low-frequency filter circuit is extracted in the two-frequency signal in the sharp piezoelectric voltage signal from after amplification
Pure low frequency swashs piezoelectric voltage signal；The effect of 4/8 described multiplexer is to swash piezoelectric voltage signal to high and low frequency respectively to enter
Row control, realization switches to public output to one of 4 road signals；The effect of described detection integrating circuit is respectively to through 4/
The IP effects and EM effects interference signal that high and low frequency after 8 multiplexers is swashed in piezoelectric voltage signal carries out Processing for removing；It is described
Programme-controlled gain amplifying circuit effect be to detection integrating circuit process after signal carry out programme-controlled gain amplification, after making amplification
Signal processed by AD conversion module.
Described AD conversion module is 24 high accuracy delta sigma type A/D converters, 32 high accuracy delta sigma type A/D conversions
At least one in device.
The chip of 4/8 described multiplexer is ADG509FB chips.
Described frontend amplifying circuit chip selects accurate, twin-channel instrument amplifier AD526 chips.
The detection of described detection integrating circuit selects circuit from OPA2227 amplifier chips, and integrating circuit selects OPA602
Amplifier chip.
The invention has the beneficial effects as follows：A kind of novel high-precision is mining Dual-frequency Ip Method receiver, by high accuracy, high-resolution
Rate gathers substantial amounts of data, the complete secondary electric potential data for obtaining the high and low frequency after subsurface mineral induced polarization, and leads to
Crossing FPGA processor and dsp processor fast and effectively carries out data processing, completes high frequency potential difference amplitude Δ VH, low-frequency electrical
Potential difference amplitude Δ VL, regarding Swing frequency FS, low frequency apparent resistivity ρSL, high frequency apparent resistivity ρSHEtc. the measurement of multinomial physical parameter and aobvious
Show, from different electrically angle analysis with portray subsurface mineral structure.It is that accurate assaying species and content are provided reliably
Data message, has significant improvement with stability, antijamming capability, can simultaneously collect high-precision high and low two kinds
The sharp piezoelectric voltage of frequency, and high and low frequency signal synchronization accuracy is high, the high advantage of data-handling efficiency, so as to improve exploration efficiency
And reduce inaccurate causing unnecessary economic loss.
Description of the drawings
A kind of novel high-precisions of Fig. 1 are mining Dual-frequency Ip Method receiver system block diagram；
Fig. 2 Signal-regulated kinase block diagrams；
In figure, the 1. display module 5.DSP process of Signal-regulated kinase 2.AD modular converters 3.FPGA processing modules 4.
The multiplexer of 9. low-frequency filter circuit of module 6. power module, 7. frontend amplifying circuit, 8. high-frequency filter circuit 10.4/8
The programme-controlled gain amplifying circuit of 11. detection integrating circuit 12..
Specific embodiment
With reference to the accompanying drawings and examples the present invention is further elaborated, but is not limitation of the invention.
Embodiment
As shown in figure 1, a kind of mining Dual-frequency Ip Method receiver of novel high-precision, including Signal-regulated kinase 1, AD conversion mould
Block 2, FPGA processing modules 3, DSP processing modules 5, display module 4 and power module 6, power module 6 to Signal-regulated kinase 1,
AD conversion module 2, FPGA processing modules 3, DSP processing modules 5 and display module 4 are powered, and FPGA processing modules 3 turn respectively with AD
Mold changing block 2, DSP processing modules 5 and display module 4 connect, and AD conversion module 2 is also connected with Signal-regulated kinase 1, wherein：
The effect of described Signal-regulated kinase 1 is that the sharp piezoelectric voltage weak signal to receiving carries out pretreatment and obtains pure
Signal；The effect of described AD conversion module 2 is to be AD converted the pretreated purified signal of Signal-regulated kinase 1, will
Signal is converted into data signal；The effect of described FPGA processing modules 3 is that the digital signal data to A/D module conversion 2 delays
Deposit, and the batch data for having cached is sent into DSP processing modules 5, and to the normal control of modules；Described
The effect of DSP processing modules 5 is that the data for transmitting FPGA processing modules 3 carry out corresponding algorithm process, then by algorithm
The data obtained after process send again FPGA processing modules 3 to, and through the control of FPGA processing modules 3, most at last data are showing
Show in module 4 and show.
Connection between described FPGA processing modules 3 and DSP processing modules 5 is to be bi-directionally connected.
As shown in Fig. 2 described Signal-regulated kinase 1 further includes frontend amplifying circuit 7, high-frequency filter circuit 8, low
Frequency filter circuit 9,4/8 multiplexer 10, detection integrating circuit 11 and programme-controlled gain amplifying circuit 12；Frontend amplifying circuit 7
Be connected with high-frequency filter circuit 8 and the one end of low-frequency filter circuit 9 respectively, 4/8 multiplexer 10 respectively with high-frequency filter circuit 8
Connect with the other end of low-frequency filter circuit 9,4/8 multiplexer 10 is also connected with detection integrating circuit 11, detection integrating circuit
11 are also connected with programme-controlled gain amplifying circuit 12；Wherein：
The effect of described frontend amplifying circuit 7 is that the faint sharp piezoelectric voltage signal to receiving is amplified process；
The effect of described high-frequency filter circuit 8 is to extract pure high frequency in the two-frequency signal in the sharp piezoelectric voltage signal from after amplification
Sharp piezoelectric voltage signal；The effect of described low-frequency filter circuit 9 is in the two-frequency signal in the sharp piezoelectric voltage signal from after amplification
Extract pure low frequency and swash piezoelectric voltage signal；The effect of 4/8 described multiplexer 10 is to swash piezoelectric voltage to high and low frequency respectively
Signal is controlled, and realization switches to public output to one of 4 road signals；The effect of described detection integrating circuit 11 is difference
The IP effects and EM effect interference signals swashed to the high and low frequency after 4/8 multiplexer 10 in piezoelectric voltage signal disappears
Except process；The effect of described programme-controlled gain amplifying circuit 12 is to carry out program control increasing to the signal after the process of detection integrating circuit 11
Benefit is amplified, and makes the signal after amplification for being processed by AD conversion module 2.
Described AD conversion module 2 adopts 24 high accuracy delta sigma type A/D converters.
The chip of 4/8 described multiplexer 10 selects ADG509FB chips.
Described frontend amplifying circuit 7 selects accurate, twin-channel instrument amplifier AD526 chips.
The detection of described detection integrating circuit 11 selects circuit from OPA2227 amplifier chips, and integrating circuit is selected
OPA602 amplifier chips.
When using, the premenstrual end amplifying circuit 7 of sharp piezoelectric voltage signal to receiving is amplified after process, through high frequency filter
Wave circuit 8 and low-frequency filter circuit 9, then selection output is carried out to the sharp piezoelectric voltage signal of high and low frequency through 4/8 multiplexer 10
Control, eliminates afterwards the impact of IP effects and EM effect interference signals into detection integrating circuit 11, finally puts to programme-controlled gain
Big circuit 12, to signal programme-controlled gain amplification is carried out；Purified signal after amplification is by using 24 high accuracy, high-resolution
The a/d converter module 2 of delta sigma type A/D converter, the high frequency potential difference amplitude Δ V after conversionHWith low frequency potential difference amplitude Δ VL
Data are passed in FPGA processing modules, under the control of Jing FPGA processing modules 3, batch data are transferred into DSP processing modules 5
In, according to regarding Swing frequency computing formula：Low frequency calculation formula of apparent resistivity：Wherein K is
Electrode coefficient, ILFor low frequency power supply electric current；High calculation formula of apparent resistivity again and again：Wherein K is electrode coefficient,
IHFor high supply current again and again.Algorithm process by more than, calculates regarding good fortune frequency, low frequency apparent resistivity, high frequency apparent resistance
Rate.Finally by the control of FPGA module 3, high frequency potential difference, low frequency potential difference after DSP processing modules 5 are processed, regarding amplitude-frequency
Rate, apparent resistivity data show in display module 4.
Claims (9)
1. the mining Dual-frequency Ip Method receiver of a kind of novel high-precision, it is characterised in that including Signal-regulated kinase, AD conversion mould
Block, FPGA processing modules, DSP processing modules, display module and power module, power module is to Signal-regulated kinase, AD conversion
Module, FPGA processing modules, DSP processing modules and display module are powered, FPGA processing modules respectively with AD conversion module, DSP
Processing module and display module connect, and AD conversion module is also connected with Signal-regulated kinase.
2. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that described signal is adjusted
The effect of reason module is that sharp piezoelectric voltage weak signal to receiving carries out pretreatment and obtains purified signal.
3. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that described AD conversion
The effect of module is to be AD converted the pretreated purified signal of Signal-regulated kinase, converts the signal into data signal.
4. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that at described FPGA
The effect of reason module is the digital signal data caching to A/D module conversion, and the batch data for having cached is sent into DSP
Processing module, and to the normal control of modules.
5. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that at described DSP
The effect of reason module is that the data that the transmission of FPGA processing modules comes are carried out into corresponding algorithm process, then will be obtained after algorithm process
To data send FPGA processing modules to again, through the control of FPGA processing modules, most at last data show in display module
Illustrate and.
6. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that at described FPGA
Connection between reason module and DSP processing modules is to be bi-directionally connected.
7. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that described AD conversion
Module is at least one in 24 high accuracy delta sigma type A/D converters, 32 high accuracy delta sigma type A/D converters.
8. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 1, it is characterised in that described signal is adjusted
Reason module further includes frontend amplifying circuit, high-frequency filter circuit, low-frequency filter circuit, 4/8 multiplexer, detection integration
Circuit and programme-controlled gain amplifying circuit；Frontend amplifying circuit is connected respectively with high-frequency filter circuit and low-frequency filter circuit one end,
4/8 multiplexer is connected respectively with high-frequency filter circuit and the low-frequency filter circuit other end, 4/8 multiplexer also with detection
Integrating circuit connects, and detection integrating circuit is also connected with programme-controlled gain amplifying circuit；Wherein：
The effect of described frontend amplifying circuit is that the faint sharp piezoelectric voltage signal to receiving is amplified process；Described
The effect of high-frequency filter circuit is to extract pure high frequency in the two-frequency signal in the sharp piezoelectric voltage signal from after amplification to swash electricity electricity
Pressure signal；The effect of described low-frequency filter circuit is to extract pure in the two-frequency signal in the sharp piezoelectric voltage signal from after amplification
Low frequency swash piezoelectric voltage signal；The effect of 4/8 described multiplexer is to swash piezoelectric voltage signal to high and low frequency respectively to control
System, realization switches to public output to one of 4 road signals；The effect of described detection integrating circuit is respectively to through more than 4/8
The IP effects and EM effects interference signal that high and low frequency after path multiplexer is swashed in piezoelectric voltage signal carries out Processing for removing；Described
The effect of programme-controlled gain amplifying circuit is to carry out programme-controlled gain amplification to the signal after the process of detection integrating circuit, after making amplification
Signal by AD conversion module for being processed.
9. the mining Dual-frequency Ip Method receiver of novel high-precision according to claim 8, it is characterised in that more than described 4/8
The chip of path multiplexer is ADG509FB chips；The chip of described frontend amplifying circuit amplifies for accurate, twin-channel instrument
Device AD526 chips；The detecting circuit of described detection integrating circuit uses OPA2227 amplifier chips, integrating circuit to be transported with OPA602
Put chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611004980.8A CN106646619A (en) | 2016-11-15 | 2016-11-15 | Novel high-precision mine double-frequency induced polarization receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004980.8A CN106646619A (en) | 2016-11-15 | 2016-11-15 | Novel high-precision mine double-frequency induced polarization receiver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264420A (en) * | 2021-12-14 | 2022-04-01 | 黄河勘测规划设计研究院有限公司 | Dyke safety monitoring method based on active field source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264420A (en) * | 2021-12-14 | 2022-04-01 | 黄河勘测规划设计研究院有限公司 | Dyke safety monitoring method based on active field source |
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