CN105204072B - Carbon electrode and measuring method in high-density electric instrument - Google Patents
Carbon electrode and measuring method in high-density electric instrument Download PDFInfo
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- CN105204072B CN105204072B CN201510589421.7A CN201510589421A CN105204072B CN 105204072 B CN105204072 B CN 105204072B CN 201510589421 A CN201510589421 A CN 201510589421A CN 105204072 B CN105204072 B CN 105204072B
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- carbon electrode
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Abstract
Carbon electrode in of the invention and a kind of high-density electric instrument, high-density electric instrument passes through the big line connecting communication circuit of high density, microprocessor, three road synchronous ADC circuits and three-component Magnetic Sensor, constituting three-component Magnetic Sensor needs three directions of required sensor are mutually orthogonal, the mutually orthogonal Magnetic Sensor composition high-density electric carbon electrode in three directions.The magnetic field signal that the present invention is produced with high density electric survey underground space electric current flowing at each carbon electrode, not only overcome the deficiency in existing high-density electric metal electrode or unpolarizable electrode use, also overcoming transient electromagnetic method needs to lay larger transmitting coil on ground, workload is big, ground receiver coil is single, the data of acquisition are less, ineffective deficiency.Solve high-density electric metal electrode or unpolarizable electrode it is more difficult in or the problem of electrode can not be squeezed into it is not enough, add the use scope and practicality of high-density electric instrument, improve operating efficiency.
Description
Technical field：
The present invention relates to a kind of geophysical prospecting equipment and measuring method, in particular in multi-electrode resistivity imaging survey
Carbon electrode and measuring method.
Background technology：
Multi-electrode resistivity imaging survey is that one kind of electrical prospecting is progressive, improves operating efficiency, adds to underground rock ore body
The information content of detection, but it is based on electrical prospecting general principle.Its general principle is radiating circuit by electrode to underground
Emission current IAB, its electric current flows in the underground rock ore body of the ground lower half-space, and streaming current will be on ground in the rock ore body of underground
Form potential difference VMN, electrical method or high-density electric receiver measure IABAnd VMN, by calculating VMNAnd IABRatio, obtain regard electricity
Resistance rate, so as to derive underground rock ore body structure.
Multi-electrode resistivity imaging survey obtains extensive use in geophysical exploration with its unique advantage.High-density electric instrument
Actual use number of electrodes is big in device, usually tens to hundreds of.Electrode in high-density electric instrument usually individually makes
It is used in mixed way with metal electrode or by metal electrode and unpolarizable electrode.
Need metal electrode being driven underground during multi-electrode resistivity imaging survey or unpolarizable electrode is digged pit and be embedded to underground, pass through
Lead is connected to main frame.Existing electrode approach exists more difficult in the practice of some multi-electrode resistivity imaging surveys or can not squeeze into electrode
Situation, such as on road, rock exposure region.With the transient electromagnetic method of high-density electric correlation technique, it explores result
It is also to calculate resistivity, transient electromagnetic method is the method for launching electromagnetic field to underground using coil, then by ground receiver coil
The secondary electromagnetic field signal that underground rock ore body is produced is received, so that the apparent resistivity of inverting underground rock ore body, transient electromagnetic method
Need to lay larger transmitting coil (tens or even thousands of square metres) on ground, workload is big, and ground receiver coil is single, obtains
The data taken are less, and operating efficiency is relatively low.
In May, 2008 Jilin University's Master's thesis " magnetometer design based on mistor " is proposed based on anisotropy
The magnetometer design scheme of mistor, can carry out three-dimensional measurement to magnetic field, with composition is simple, compact, the features such as.
But, the design is measurement three-component magnetic field, and specific practical application is seldom considered, also has no three-component magnetic field
The document report applied in high-density electric.
The content of the invention：
The purpose of the present invention is just now in there is provided a kind of magnetic suitable for via High-density Resistivity Method in view of the shortcomings of the prior art
Electrode technology, it is intended to solve when metal electrode can not hammer into underground, measures magnetic field by carbon electrode and makes up metal electrode omission
Cause to measure discontinuous problem
The purpose of the present invention is achieved through the following technical solutions：
Carbon electrode in high-density electric instrument, including high-density electric instrument by the big line connecting communication circuit of high density, three points
Magnetic Sensor, microprocessor and analog-digital converter are measured, is sensed by X-direction Magnetic Sensor, Y-direction Magnetic Sensor and Z-direction magnetic
Device distinguishes conditioned circuit a, modulate circuit b and modulate circuit c Jing San Roads synchronous ADC circuit, microprocessor and communication electricity
Road is connected and composed；
Described three-component Magnetic Sensor is by three single fluxgate sensors or the magnetoresistance device group by three directions
Into three directions of the three-component Magnetic Sensor constituted are mutually orthogonal, and the mutually orthogonal Magnetic Sensor in three directions constitutes high
Density electrical method carbon electrode, the magnetic field signal produced for high density electric survey underground space electric current flowing at each carbon electrode.
The magnetic field data measured at each carbon electrode is converted to the current potential of each point, consecutive points current potential is subtracted each other, obtains highly dense
The corresponding potential difference of electrical method is spent, the purpose that potential difference measurement is realized by surveying magnetic is reached.
Described microprocessor includes any of single-chip microcomputer, DSP, FPGA, computer CPU.
Described communicating circuit is times in serial communication circuit, including RS232, RS485, USB or network communication circuit
It is a kind of.
Three described road synchronous ADC circuits, the operationally starting of analog-to-digital conversion and conversion end time synchronized.
The measuring method of carbon electrode, comprises the following steps in high-density electric instrument：
A, the laying big line of high density on area's hatching is surveyed；
B, by high-density electric job specification requirement, between electrode A B lay carbon electrode 2, carbon electrode 3 ... carbon electrode
n-1；
The big line of c, high density is respectively through respective electrode controller connection electrode A, B and 2~carbon electrode of carbon electrode n-1；Both
The big line of high density connects carbon electrode 2 through the connection electrode A of electrode controller 1, through electrode controller 2, connects magnetic through electrode controller 3
Electrode 3 ... is through electrode controller n-1 connection carbon electrode n-1 and through electrode controller n connection electrodes B；
D, electrode A, B power, and carbon electrode 2 to carbon electrode n-1 measures the magnetic field signal of carbon electrode position；
E, by electrode controller microprocessor receive, digital analog converter digitized processing, and be converted to carbon electrode 2 to
The electric potential signal of carbon electrode n-1 corresponding points；
F, high-density electric instrument to sent the electric potential signal after conversion by the big line of high density again.
Beneficial effect：The present invention proposes the carbon electrode in a kind of high-density electric instrument of combination high-density electric instrument, both
The deficiency in existing high-density electric metal electrode or unpolarizable electrode use is overcome, transient electromagnetic method needs are overcome again
Larger transmitting coil is laid on ground, workload is big, and ground receiver coil is single, and the data of acquisition are less, inefficiency
Deficiency.Compared with existing high-density electric instrument electrode, carbon electrode technology is employed, potential difference will be measured in high-density electric
Method be transformed to the method for measuring the magnetic field signal that underground space electric current flowing is produced, and then derive underground space electric current stream
Move the potential difference produced on ground.The present invention can use the total magnetic field size obtained by three components, derive empty with underground
Between the corresponding current potential of magnetic field signal that is produced at each carbon electrode of electric current flowing, the size of each component of magnetic tricomponent can also be used
Change to measure underground rock ore body moves towards trend.The present invention, which solves high-density electric metal electrode or unpolarizable electrode, to be made
In it is more difficult or the problem of electrode can not be squeezed into it is not enough, add the use scope and practicality of high-density electric instrument, improve
Operating efficiency
Brief description of the drawings
Fig. 1 is Magnetic Sensor carbon electrode structured flowchart in high-density electric instrument
Fig. 2 is magnetoresistive transducer carbon electrode structured flowchart in high-density electric instrument
Fig. 3 is fluxgate sensor carbon electrode structured flowchart in high-density electric instrument
Fig. 4 is high-density electric carbon electrode and high-density electric instrument work connection diagram
Fig. 5 is high-density electric carbon electrode operation principle schematic diagram
Fig. 6 is the carbon electrode circuit diagram based on fluxgate
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Carbon electrode in high-density electric instrument, including high-density electric instrument by the big line connecting communication circuit of high density, three points
Magnetic Sensor, microprocessor and analog-digital converter are measured, is sensed by X-direction Magnetic Sensor, Y-direction Magnetic Sensor and Z-direction magnetic
Device distinguishes conditioned circuit a, modulate circuit b and modulate circuit c Jing San Roads synchronous ADC circuit, microprocessor and communication electricity
Road is connected and composed；
Described three-component Magnetic Sensor is by three single fluxgate sensors or the magnetoresistance device group by three directions
Into three directions of the three-component Magnetic Sensor constituted are mutually orthogonal, and the mutually orthogonal Magnetic Sensor in three directions constitutes high
Density electrical method carbon electrode, the magnetic field signal produced for high density electric survey underground space electric current flowing at each carbon electrode.
The magnetic field data measured at each carbon electrode is converted to the current potential of each point, consecutive points current potential is subtracted each other, obtains highly dense
The corresponding potential difference of electrical method is spent, the purpose that potential difference measurement is realized by surveying magnetic is reached.
Described microprocessor includes any of single-chip microcomputer, DSP, FPGA, computer CPU.
Described communicating circuit is times in serial communication circuit, including RS232, RS485, USB or network communication circuit
It is a kind of.
Three described road synchronous ADC circuits, the operationally starting of analog-to-digital conversion and conversion end time synchronized.
The measuring method of carbon electrode, comprises the following steps in high-density electric instrument：
A, the laying big line of high density on area's hatching is surveyed；
B, by high-density electric job specification requirement, between electrode A B lay carbon electrode 2, carbon electrode 3 ... carbon electrode
n-1；
The big line of c, high density is respectively through respective electrode controller connection electrode A, B and 2~carbon electrode of carbon electrode n-1；Both
The big line of high density connects carbon electrode 2 through the connection electrode A of electrode controller 1, through electrode controller 2, connects magnetic through electrode controller 3
Electrode 3 ... is through electrode controller n-1 connection carbon electrode n-1 and through electrode controller n connection electrodes B；
D, electrode A, B power, the magnetic field signal of 2~carbon electrode of carbon electrode n-1 measurement carbon electrodes position；
E, by electrode controller microprocessor receive, digital analog converter digitized processing, and be converted to carbon electrode 2 to
The electric potential signal of carbon electrode n-1 corresponding points；
F, high-density electric instrument to sent the electric potential signal after conversion by the big line of high density again.
Three-component Magnetic Sensor is respectively through adjusting by X-direction Magnetic Sensor, Y-direction Magnetic Sensor and Z-direction Magnetic Sensor
Manage circuit a, modulate circuit b and modulate circuit c Jing San Roads synchronous ADC circuit, microprocessor and communicating circuit connection structure
Into；
Three-component magnetoresistive transducer is by X-direction magnetoresistive transducer, Y-direction magnetoresistive transducer and Z-direction magnetoresistive transducer
Jing San Road synchronous ADC circuit, microprocessor and communicating circuit are connected and composed respectively；
Triaxial fluxgate magnetometer is by X-direction fluxgate sensor, Y-direction fluxgate sensor and Z-direction magnetic flux
Door sensor is respectively through fluxgate modulate circuit a, fluxgate modulate circuit b and fluxgate modulate circuit c moduluses synchronous with three tunnels
Change-over circuit is connected and composed.
Three-component Magnetic Sensor is connected to modulate circuit, and the output of three road modulate circuits is connected to three road synchronous ADC electricity
Road, the output of analog to digital conversion circuit is connected to microprocessor, and microprocessor control analog to digital conversion circuit carries out three-component magnetic field number
According to synchronized sampling, storage, and high-density electric instrument is given through the big line of high density by measurement data by communicating circuit.
2~n-1 metal electrode or unpolarizable electrode original in high-density electric are replaced with to the carbon electrode of the present invention,
As shown in Figure 4, surveyed when high-density electric instrument works by the big line of high density from metal electrode 1 and n to underground supply by electrical method
The current signal of spy method requirement, the current signal flows in the ground lower half-space, as shown in Figure 5, and produces and supply current
The corresponding magnetic field signal of signal, is distributed in the 2 of ground to n-1 carbon electrodes and measures magnetic field signal corresponding with supply current signal,
Be converted to after data signal, by communicating circuit through the big line of high density, send high-density electric instrument to, carry out at magnetoelectricity signal
Reason, calculates the current potential at 2 to n-1 carbon electrodes position.
The composition of carbon electrode is to be connected to modulate circuit by three-component Magnetic Sensor in the present invention, three road modulate circuits it is defeated
Go out to be connected to three road synchronous ADC circuits, the output of analog to digital conversion circuit is connected to microprocessor, microprocessor control modulus
Change-over circuit carries out three-component magnetic field data synchronized sampling, storage, and by communicating circuit by measurement data through the big line of high density
Give high-density electric instrument.
When carrying out field multi-electrode resistivity imaging survey, carbon electrode is laid between electrodes of A B, by high-density electric
Exploration concrete scheme is arranged, then each carbon electrode will measure the magnetic field that underground space electric current flowing is produced at each carbon electrode
Signal, is converted to after data signal, gives high-density electric instrument by the big line of high density, high-density electric instrument is again by each carbon electrode
Data signal be converted to current potential at each carbon electrode.Therefore potential difference measurement is completed by surveying the method for magnetic, realizes this
The purpose of invention.
Described three-component Magnetic Sensor in use, can use the quadratic sum of three components to obtain total magnetic field square
Size, it is corresponding using the magnetic field signal that the size of total magnetic field is derived with underground space electric current flowing is produced at each carbon electrode
Current potential.The size variation of magnetic tricomponent each component can also be used to measure underground rock ore body moves towards trend.
Embodiment：1
Magnetoresistive transducer carbon electrode in high-density electric instrument, as shown in Fig. 2 magnetoresistive transducer carbon electrode is by X side
Three road synchronized AD converter electricity are connected respectively to magnetoresistive transducer, Y-direction magnetoresistive transducer and Z-direction magnetoresistive transducer
Road, the output of three road synchronous ADC circuits is connected to the microprocessor in carbon electrode controller, microprocessor control modulus
Change-over circuit carries out three-component magnetic field data synchronized sampling, storage, and by communicating circuit by measurement data through the big line of high density
Give high-density electric instrument.
The measuring method of carbon electrode, comprises the following steps in high-density electric instrument：
A, the laying big line of high density on area's hatching is surveyed；
B, by high-density electric job specification requirement, between electrode A B lay carbon electrode 2, carbon electrode 3 ... carbon electrode
n-1；
The big line of c, high density is respectively through respective electrode controller connection electrode A, B and 2~carbon electrode of carbon electrode n-1；Both
The big line of high density connects carbon electrode 2 through the connection electrode A of electrode controller 1, through electrode controller 2, connects magnetic through electrode controller 3
Electrode 3 ... is through electrode controller n-1 connection carbon electrode n-1 and through electrode controller n connection electrodes B；
D, electrode A, B power, the magnetic field signal of 2~carbon electrode of carbon electrode n-1 measurement carbon electrodes position；
E, by electrode controller microprocessor receive, digital analog converter digitized processing, and be converted to carbon electrode 2 to
The electric potential signal of carbon electrode n-1 corresponding points；
F, high-density electric instrument to sent the electric potential signal after conversion by the big line of high density again.
Embodiment 2：
Fluxgate sensor carbon electrode in high-density electric instrument, as shown in figure 3, fluxgate sensor carbon electrode be by
X-direction fluxgate sensor is connected to three road synchronized AD converter circuits through fluxgate modulate circuit a, and Y-direction fluxgate is passed
Sensor is connected to three road synchronized AD converter circuits through fluxgate modulate circuit b, and Z-direction fluxgate sensor is adjusted through fluxgate
Reason circuit c is connected to three road synchronized AD converter circuits, and the output of three road synchronous ADC circuits is connected to carbon electrode control
Microprocessor in device processed, microprocessor control analog to digital conversion circuit carries out three-component magnetic field data synchronized sampling, storage, and leads to
Cross communicating circuit and give high-density electric instrument through the big line of high density by measurement data.
The measuring method of carbon electrode, comprises the following steps in high-density electric instrument：
A, the laying big line of high density on area's hatching is surveyed；
B, by high-density electric job specification requirement, between electrode A B lay carbon electrode 2, carbon electrode 3 ... carbon electrode
n-1；
The big line of c, high density is respectively through respective electrode controller connection electrode A, B and 2~carbon electrode of carbon electrode n-1；Both
The big line of high density connects carbon electrode 2 through the connection electrode A of electrode controller 1, through electrode controller 2, connects magnetic through electrode controller 3
Electrode 3 ... is through electrode controller n-1 connection carbon electrode n-1 and through electrode controller n connection electrodes B；
D, electrode A, B power, and carbon electrode 2 to carbon electrode n-1 measures the magnetic field signal of carbon electrode position；
E, by electrode controller microprocessor receive, digital analog converter digitized processing, and be converted to carbon electrode 2 to
The electric potential signal of carbon electrode n-1 corresponding points；
F, high-density electric instrument to sent the electric potential signal after conversion by the big line of high density again.
Claims (6)
1. carbon electrode in a kind of high-density electric instrument, including high-density electric instrument pass through the big line connecting communication circuit of high density, three
Component Magnetic Sensor, microprocessor and analog-digital converter, it is characterised in that be by X-direction Magnetic Sensor, Y-direction Magnetic Sensor
Distinguish conditioned circuit a, modulate circuit b and modulate circuit c Jing San Roads synchronous ADC circuit with Z-direction Magnetic Sensor, it is micro-
Processor and communicating circuit are connected and composed；
Described three-component Magnetic Sensor is made up of three single fluxgate sensors or the magnetoresistance device by three directions, institute
Three directions of the three-component Magnetic Sensor of composition are mutually orthogonal, and the mutually orthogonal Magnetic Sensor in three directions constitutes high density electricity
Method carbon electrode, the magnetic field signal produced for high density electric survey underground space electric current flowing at each carbon electrode.
2. according to carbon electrode in the high-density electric instrument described in claim 1, it is characterised in that the magnetic that will be measured at each carbon electrode
Field data is converted to the current potential of each point, and consecutive points current potential is subtracted each other, and obtains the corresponding potential difference of high-density electric, reaches by surveying
Magnetic realizes the purpose of potential difference measurement.
3. according to carbon electrode in the high-density electric instrument described in claim 1, it is characterised in that described microprocessor includes single
Any of piece machine, DSP, FPGA, computer CPU.
4. according to carbon electrode in the high-density electric instrument described in claim 1, it is characterised in that described communicating circuit is serial
Communicating circuit, including any of RS232, RS485, USB or network communication circuit.
5. according to carbon electrode in the high-density electric instrument described in claim 1, it is characterised in that the synchronous modulus in three described tunnels turns
Circuit is changed, operationally the starting of analog-to-digital conversion and conversion end time synchronized.
6. according to the measuring method of carbon electrode in the high-density electric instrument described in claim 1, it is characterised in that including following step
Suddenly：
A, the laying big line of high density on area's hatching is surveyed；
B, by high-density electric job specification requirement, multiple carbon electrodes are laid between electrode A B；
The big line of c, high density is respectively through respective electrode controller connection electrode A, electrode B and the multiple carbon electrode；It is i.e. highly dense
Spend big line and connect multiple carbon electrodes respectively through an electrode controller connection electrode A, through multiple electrodes controller successively, through another
Individual electrode controller connection electrode B, electrode controller extremely connects one to one with magnetoelectricity；
D, electrode A, B power, and multiple carbon electrodes measure the magnetic field signal of respective position respectively；
E, received by the microprocessor in electrode controller, digital analog converter digitized processing, and be converted to each carbon electrode correspondence
The electric potential signal of point；
F, high-density electric instrument to sent the electric potential signal after conversion by the big line of high density again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510589421.7A CN105204072B (en) | 2015-09-16 | 2015-09-16 | Carbon electrode and measuring method in high-density electric instrument |
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|---|---|---|---|
| CN201510589421.7A CN105204072B (en) | 2015-09-16 | 2015-09-16 | Carbon electrode and measuring method in high-density electric instrument |
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| CN105204072A CN105204072A (en) | 2015-12-30 |
| CN105204072B true CN105204072B (en) | 2017-08-29 |
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| CN111913224A (en) * | 2020-09-15 | 2020-11-10 | 中国矿业大学 | High-precision three-component electromagnetic field sensor and measuring method thereof |
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| US5444374A (en) * | 1990-06-06 | 1995-08-22 | University Of New England | Method and apparatus for simultaneously collecting spatially and temporally varying magnetic survey data |
| US8368455B2 (en) * | 2007-12-31 | 2013-02-05 | Korea Institute Of Geoscience & Mineral Resources | Apparatus and method for automatic control of current electrodes for electrical resistivity survey |
| CN101369025B (en) * | 2008-10-13 | 2011-03-30 | 湖南继善高科技有限公司 | Combination field source artificial source frequency domain electromagnetic sounding method |
| CN204925410U (en) * | 2015-09-16 | 2015-12-30 | 吉林大学 | Carbon electrode in high -density resistivity method instrument |
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