CN106019404A - Electromagnetic method-based test device for testing polarization potential of electrode - Google Patents
Electromagnetic method-based test device for testing polarization potential of electrode Download PDFInfo
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- CN106019404A CN106019404A CN201610512642.9A CN201610512642A CN106019404A CN 106019404 A CN106019404 A CN 106019404A CN 201610512642 A CN201610512642 A CN 201610512642A CN 106019404 A CN106019404 A CN 106019404A
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- electrode
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- test device
- analog switch
- pole plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses an electromagnetic method-based test device for testing the polarization potential of an electrode. The test device comprises an electrode test box, a test electrode in the electrode test box, a first analog switch, a second analog switch, an operational amplifier and a differential analog-to-digital converter. The test electrode is connected with one end of the first analog switch. The other end of the first analog switch is connected with the input end of the operational amplifier. The output end of the operational amplifier is connected with one end of the second analog switch. The other end of the second analog switch is connected with the input end of a low pass filter. The output end of the low pass filter is connected with the input end of the differential analog-to-digital converter. According to the technical scheme of the invention, the test device is used for analyzing the polarization potential of the electrode and obtaining reliable polarization potential data. By using the test device, electrode influence factors are flexible to control. Therefore, the required electrode evaluation can be completed in a laboratory.
Description
Technical field
The present invention relates to geophysical reconnaissance field, particularly to a kind of electromagnetic prospecting electrode polarization electricity
The test device of position.
Background technology
In ground electromagnetic exploration, the physical quantity measured is needed to include two electric field components and 3 magnetic fields
Component, the voltage that wherein measurement of electric field component is through being embedded between ground two electrodes comes
Obtain.
Owing to the low frequency electromagnetic signals of reflection Deep Information is the faintest, detection difficulty is very big, and to electricity
The performance requirement of pole is the highest, it is desirable to after electrode contacts with ground, and the polarization potential of generation is required enough
Little and stable, its polarization potential temperature to external world, the humidity of soil, the salinity shadow of the soil liquid
Ring less (along with the time burying electrode is elongated, above parameter all can be varied from).Otherwise, measure
The low-frequency current field data obtained will be polluted and unavailable greatly.With humanity interference and system noise
Comparing, the characteristic of electrode polarization current potential is unknowable on the impact stealth especially of measurement data.Due to
The detection device of electrical method electrode polarization potential there is presently no, thus electrode polarization potential property also without
Method is learnt, if can be with the polarization potential of detecting electrode, then the no matter measurement to electric field, or after
Continuous data process to be had and important positive effect.
Prior art is typically employed in around the measuring point of two, field and buries multiple electrode underground, then carries out same
The method that measuring point Different electrodes is measured and two measuring point Different electrodes intersection is measured obtains data, and then
Studied with variance calculating by dependency.There is the most several defect in currently available technology: 1, grinds
Study carefully the impact that have ignored on same observation station between Different electrodes；2, data itself carry various earth electric field
Information, be mixed in polarization potential data, it is impossible to obtain reliable result；3, electrode cannot be extracted
The information of polarization potential；4, only carry out seasonal effect in time series evaluation, do not carry out the analysis in data frequency territory,
It is less well-suited to utilize the electromagnetic exploration method of frequency domain.
Summary of the invention
In view of this, the test of a kind of electromagnetic prospecting electrode polarization current potential is embodiments provided
Device.
The test device of a kind of electromagnetic prospecting electrode polarization current potential, described test device includes: electrode
Testing cassete, the test electrode being positioned in described electrode test box, the first analog switch, the second simulation are opened
Pass, differential operational amplifier, low pass filter and difference A/D converter, described test electrode with
One end of described first analog switch connects, and the other end of described first analog switch is transported with described difference
The input calculating amplifier connects, and the outfan of described differential operational amplifier leaves with described second simulation
The one end closed connects, and the other end of described second analog switch is connected with the input of described low pass filter,
The output of described low pass filter is connected with the input of described difference A/D converter.
Alternatively, described electrode test box is the cuboid with an opening, adjacent with described opening
Two of which side on be oppositely arranged two power supply pole plates, respectively first power supply pole plate and second supply
Battery lead plate, is filled with electrolyte in described cuboid, described test electrode is placed on by described opening
In electrolyte in described electrode test box.
Alternatively, described first power supply pole plate has positive voltage, and described second power supply pole plate has ground connection；
Or the first power pole plate earthing, described second power supply pole plate has positive voltage.
Alternatively, the degree of depth of described electrode test box is 1 meter, and the width of described electrode test box is 1
Rice, a length of 2 meters of described electrode test box.
Alternatively, described electrolyte is uniform pure soil.
Alternatively, at the geometric center of the opening that described test electrode is positioned at described electrode test box.
Alternatively, the model of described differential operational amplifier is differential operational amplifier AD620.
Alternatively, described difference A/D converter is Differential Input pattern number converter.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
Utilize the test device that the present invention provides to carry out the analysis of electrode polarization current potential, it is possible to obtain can
The polarization potential data leaned on, electrode influences factor controls relatively flexible, can complete required in laboratory
The electrode evaluation wanted.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the test device of the electromagnetic prospecting electrode polarization current potential of the present invention；
Fig. 2 is the structure chart of the electrode test box of the electromagnetic prospecting electrode polarization current potential of the present invention；
Fig. 3 is the electrode test box internal electric field distribution of the electromagnetic prospecting electrode polarization current potential of the present invention
Schematic diagram.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is only the embodiment of a present invention part rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work
The every other embodiment obtained under premise, all should belong to the scope of protection of the invention.
Term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second ",
The (if present) such as " the 3rd ", " the 4th " is for distinguishing similar object, without being used for retouching
State specific order or precedence.Should be appreciated that the data of so use in the appropriate case can be mutual
Change, in order to the embodiments described herein can suitable with in addition to the content except here illustrating or describe
Sequence is implemented.Additionally, term " includes " and " having " and their any deformation, it is intended that
Cover non-exclusive comprising, such as, contain series of steps or the process of unit, method, system,
Product or equipment are not necessarily limited to those steps or the unit clearly listed, but can include the clearest
List or for intrinsic other step of these processes, method, product or equipment or unit.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is entered
Row clearly and completely describes, it is clear that described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art are not making
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
The term that may relate to is explained:
Electrode polarization current potential: the when that electrode contacting with soil, can produce a polarization potential, this
Polarization potential can change with humidity along with extraneous temperature and change, and so-called unpolarizable electrode is not
Refer to that electrode does not has polarization, but say that its polarization potential is the least, and more stable, polarization electricity
The change of position environment to external world is insensitive.
Electrolyte be dissolved in aqueous solution or the most just can conduct electricity (self-ionization Cheng Yang from
Son and anion) compound.
Electrode: in the case of cell, whole battery is in electrochemical equilibrium state, two electricity
Pole is also respectively at poised state, and electrode potential is determined by Nernst equation, is the electrode of balance
Current potential.Now, be zero by the electric current of electrode, i.e. the speed of electrode reaction is zero.To make one
The electric current being not zero passes through electrode, and electrode potential must deviate the value of equilibrium electrod potential, and this just claims
For polarizing electrode.
Analog switch: (English name Analog switches), the signal mainly completed in signal link is cut
Change function.The on-off mode using metal-oxide-semiconductor achieves and turns off signal link or open；Due to it
It is functionally similar to switch, and realizes by the characteristic of analog device, become analog switch.
Shown in Fig. 1, the present invention provides the test device of a kind of electromagnetic prospecting electrode polarization current potential,
Described test device includes: electrode test box 1, the test electrode 2 being positioned in described electrode test box 1,
First analog switch the 3, second analog switch 5, differential operational amplifier 4, low pass filter and difference
Submodular transducer 6, described test electrode 2 is connected with one end of described first analog switch 3, described
The other end of the first analog switch 3 is connected with the input of differential operational amplifier 4, and calculus of differences is put
The big outfan of device 4 is connected with one end of described second analog switch 5, described second analog switch 5
The other end be connected with the input of described low pass filter 9, the output of described low pass filter 9 and institute
The input stating difference A/D converter 6 connects.
Shown in Fig. 1, the first analog switch 3 and the second analog switch 5 all include that four son simulations are opened
Closing, it is simple to be connected with differential operational amplifier 4 or low pass filter 9, those of ordinary skill in the art should
Work as understanding, do not repeat.
Low pass filter 9 can use existing low pass filter widely, does not limits this.
Shown in Fig. 2, for the structure of electrode test box 1, the invention provides a kind of realization side
Formula, is described below:
The test electrode 2 that generally electromagnetic method test uses contacts the part of soil and is typically a diameter of 10cm
Circle, in order to avoid two test electrodes 2 between influence each other, then test electrode 2 shadow
Ringing the level of distance about 1m, electrode test box 1 is the cuboid with an opening, with opening
Two power supply pole plates, the respectively first power supply pole plate 7 He it is oppositely arranged on adjacent two of which side
Second power supply pole plate 8, is filled with electrolyte in cuboid, test electrode 2 is placed on electrode by opening and surveys
In electrolyte in examination box 1.
Shown in Fig. 3, the first power supply pole plate 7 has positive voltage 12V, and the second power supply pole plate 8 connects
Ground；Or the first power supply pole plate 7 ground connection, the second power supply pole plate 8 has 12V voltage, surveys to electrode
After the power supply pole plate of examination box 1 adds a voltage, it is seen that electric field is equally distributed in soil box, that
, the half that midpoint electromotive force is two electrode potential sums between the electrode of electrode test box both sides two, this
In should be 6V voltage.
Being found through experiments, the degree of depth of electrode test box 2 is 1 meter, and the width of electrode test box 2 is 1
Rice, a length of 2 meters of electrode test box 2, the effect of test is preferable.
Alternatively, electrolyte is uniform pure soil, the when of filling soil, it is necessary to assure all
Even, there are not the foreign material such as stone in earth, uniformly bury and tamp reality.
Alternatively, at the geometric center of the opening that test electrode 2 is positioned at electrode test box 2, test electricity
Pole 2 is directly inserted in earth, and certainly, test electrode 2 is not necessarily placed at geometric center, according to electricity
The different placement locations of pole, correspondingly the reference potential of amendment detection is the most permissible, and this area is common
Technical staff is not it is to be appreciated that limit.
Alternatively, the model of differential operational amplifier 4 is differential operational amplifier AD620, AD620
There is high accuracy (maximum nonlinearity 40ppm), low maladjustment voltage (maximum 50 μ V) and low offset drift
(maximum 0.6 μ V/ DEG C) characteristic, is the ideal of the Precise Data Sampling System such as electronic scale and sensor interface
Choosing.It also has low noise, low input bias current and low power consumption characteristic, is allowed to be especially suitable for ECG
With medical applications such as non-invasive blood pressure measuring instruments.
Alternatively, difference A/D converter 6 is Differential Input pattern number converter.
The test device that application is previously described is measured to a kind of realization side of possible method of testing
Formula is:
Test electrode 2 is connected a lead-in wire and is connected difference fortune with 6V voltage by the first analog switch 3
Calculating amplifier 4 and carry out a difference copped wave process, differential operational amplifier 4 exports again by second
Analog switch 5 obtains a differential signal, after giving a difference A/D converter 6 differential signal
Obtain test polarization of electrode current potential, this polarization potential is measured for a long time, and data are entered
Row processes, thus obtains some evaluation results.
Utilize the test device that the present invention provides to carry out the analysis of electrode polarization current potential, it is possible to obtain can
The polarization potential data leaned on, electrode influences factor controls relatively flexible, can complete required in laboratory
The electrode evaluation wanted.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, above-mentioned
The system described, the specific works process of device and unit, it is referred in preceding method embodiment
Corresponding process, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, device
And method, can realize by another way.Such as, device embodiment described above is only
It is schematic, such as, the division of unit, it is only a kind of logic function and divides, actual when realizing
Can have other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another
One system, or some features can ignore, or do not perform.Another point, shown or discussed phase
Coupling between Hu or direct-coupling or communication connection can be by some interfaces, device or unit
INDIRECT COUPLING or communication connection, can be electrical, machinery or other form.
The unit illustrated as separating component can be or may not be physically separate, as
The parts that unit shows can be or may not be physical location, i.e. may be located at a place,
Or can also be distributed on multiple NE.Part therein can be selected according to the actual needs
Or all unit realizes the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit
In, it is also possible to it is that unit is individually physically present, it is also possible to two or more unit are integrated in
In one unit.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ soft
The form of part functional unit realizes.
One of ordinary skill in the art will appreciate that in the various methods of above-described embodiment is all or part of
Step can be by program and completes to instruct relevant hardware, and this program can be stored in a calculating
In machine readable storage medium storing program for executing, storage medium may include that read only memory (ROM, Read Only
Memory), random access memory (RAM, Random Access Memory), disk or CD
Deng.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method
Suddenly the program that can be by completes to instruct relevant hardware, program can be stored in a kind of computer
In readable storage medium storing program for executing, storage medium mentioned above can be read only memory, disk or CD etc..
Above the test device of a kind of electromagnetic prospecting electrode polarization current potential provided by the present invention is carried out
It is discussed in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention,
All will change in detailed description of the invention and range of application, to sum up, this specification content should not be managed
Solve as limitation of the present invention.
Claims (8)
1. the test device of an electromagnetic prospecting electrode polarization current potential, it is characterised in that described test
Device includes: electrode test box, the test electrode being positioned in described electrode test box, the first simulation are opened
Pass, the second analog switch, differential operational amplifier, low pass filter and difference A/D converter,
Described test electrode is connected with one end of described first analog switch, another of described first analog switch
End be connected with the input of described differential operational amplifier, the outfan of described differential operational amplifier and
One end of described second analog switch connects, the other end of described second analog switch and described low pass filtered
The input of ripple device connects, the output of described low pass filter and the input of described difference A/D converter
Connect.
Test device the most according to claim 1, it is characterised in that described electrode test box is
There is the cuboid of an opening, the two of which side adjacent with described opening is oppositely arranged two
Power supply pole plate, the respectively first power supply pole plate and the second power supply pole plate, be filled with electricity in described cuboid
Xie Zhi, described test electrode is placed in the electrolyte in described electrode test box by described opening.
Test device the most according to claim 2, it is characterised in that described first power supply pole plate
There is positive voltage, described second power pole plate earthing；Or the first power pole plate earthing, described second
Power supply pole plate has positive voltage.
4. according to the test device described in Claims 2 or 3, it is characterised in that described electrode test
The degree of depth of box is 1 meter, and the width of described electrode test box is 1 meter, the length of described electrode test box
It it is 2 meters.
Test device the most according to claim 4, it is characterised in that described electrolyte is uniform
Pure soil.
Test device the most according to claim 2, it is characterised in that described test electrode is positioned at
At the geometric center of the opening of described electrode test box.
Test device the most according to claim 1, it is characterised in that described calculus of differences amplifies
The model of device is differential operational amplifier AD620.
Test device the most according to claim 2, it is characterised in that described differential mode number conversion
Device is Differential Input pattern number converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512642.9A CN106019404B (en) | 2016-07-01 | 2016-07-01 | A kind of test device of electromagnetic prospecting electrode polarization current potential |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512642.9A CN106019404B (en) | 2016-07-01 | 2016-07-01 | A kind of test device of electromagnetic prospecting electrode polarization current potential |
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| CN106019404A true CN106019404A (en) | 2016-10-12 |
| CN106019404B CN106019404B (en) | 2018-04-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693412A (en) * | 2017-04-06 | 2018-10-23 | 上海市地震预测分析中心 | Earthquake Observation of The Geoelectric Field device and observation procedure |
| CN109286423A (en) * | 2018-09-28 | 2019-01-29 | 中南大学 | A kind of either simplex two-way carrier communication device based on mountain area exploration receiver |
| CN113406708A (en) * | 2021-06-18 | 2021-09-17 | 中国科学院地质与地球物理研究所 | Electrode range eliminating system and method for electromagnetic prospecting electric field measurement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693412A (en) * | 2017-04-06 | 2018-10-23 | 上海市地震预测分析中心 | Earthquake Observation of The Geoelectric Field device and observation procedure |
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| CN113406708A (en) * | 2021-06-18 | 2021-09-17 | 中国科学院地质与地球物理研究所 | Electrode range eliminating system and method for electromagnetic prospecting electric field measurement |
| CN113406708B (en) * | 2021-06-18 | 2022-01-04 | 中国科学院地质与地球物理研究所 | Electrode range eliminating system and method for electromagnetic prospecting electric field measurement |
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| CN106019404B (en) | 2018-04-17 |
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