CN109839667A - Electromagnetic type data link for physics survey system - Google Patents
Electromagnetic type data link for physics survey system Download PDFInfo
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- CN109839667A CN109839667A CN201711210196.7A CN201711210196A CN109839667A CN 109839667 A CN109839667 A CN 109839667A CN 201711210196 A CN201711210196 A CN 201711210196A CN 109839667 A CN109839667 A CN 109839667A
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- survey system
- electromagnetic type
- sensor
- data link
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Abstract
Electromagnetic type data link for physics survey system, it is characterised in that: the electromagnetic type data link for physics survey system includes test waveform source, annular electromagnetic sensor, amplifier, data sink, data processor；Wherein: test waveform source, data sink and data processing system can be located in aircraft, and by being connected to annular electromagnetic sensor along the communication link of towing cable and the armouring of support cable laying.Test waveform source, amplifier can be physically located in annular electromagnetic sensor nearby or at which, to reduce the introducing of preamplifier noise to the signal obtained by receiver sensor component.Advantages of the present invention: the electromagnetic type data link of the present invention for physics survey system, design is reasonable, by combining the low frequency sensitivity of its magnetic induction sensor with the measured value of the high-frequency response obtained using alignment loop, it determines the calibration factor of its receiver system, improves exploration efficiency and detection accuracy.
Description
Technical field
The present invention relates to geological mapping fields, specifically provide a kind of electromagnetic type data transmission for physics survey system
Device.
Background technique
In actual EM exploration system, by one or more receivers (they can be orthogonal) induction earth
Auxiliary response, and recorded by data-acquisition system.In active source system, influence of the primary magnetic field to receiver can be by making
It is reduced with bucking coil, to allow the more accurate record to secondary magnetic field.In particular, may be used also when there are bucking coil
The primary magnetic field of transmitting is incuded and recorded by current sensor.In the case where active source system, the transmitter of record
Primary magnetic waveforms, bucking coil waveform and the receiver and record system that current waveform and secondary magnetic field waveform are emitted
Transmission function influence.Although these influences tend to very little at high delay time (low frequency), they prolong short
Become more important when slow time (high-frequency).In the case where natural source system, the amplitude of signal and phase by receiver and
The influence of record system.In order to suitably explain the waveform of record, primary magnetic waveforms, the receiver of transmitting are reduced or eliminated,
And the influence of record system is ideal.This requires the impulse response (or transmission function) of sensor and record system accurate
Known to ground.Since impulse response and transmission function change, under the conditions of field, with interval measurement appropriate, they are reasons
Think.The receiver in natural source EM system based on ground is usually the ferromagnetic core magnetic induction for having toroidal
Sensor.Such receiver can be convenient equipped with helix tube form calibration winding, the calibration winding close main winding,
Other than the end for extending slightly into core, and there is the size for the sensor being equivalent in calibration.This is used of the fact that
Only know the spacing of winding and in the electric current wherein flowed, so that it may accurately calculate the magnetic field inside helix tube winding.
Receiver in TDEM system and aviation natural source EM is usually the cooling snake of air of the form of loop with multiturn line
Pipe magnetic induction sensor.Biggish air coil receiver have the advantages that it is multiple, including more clean time domain response with
And more convenient shape for aviation towing.In ground observation environment, it is difficult to sufficiently large to include such reception
The magnetic field of accurately known waveform and amplitude is provided in the space of device.
Summary of the invention
The purpose of the present invention is to solve above-mentioned many technical problems, have provided a kind of for physics exploration
The electromagnetic type data link of system.
The present invention provides the electromagnetic type data links for physics survey system, it is characterised in that: described is used for
The electromagnetic type data link of physics survey system include test waveform source (1), annular electromagnetic sensor (2), amplifier (3),
Data sink (4), data processor (5)；
Wherein: test waveform source (1), data sink (4) and data processor (5) can be located in aircraft (3), and
By being connected to annular electromagnetic sensor (2) along the communication link of towing cable and the armouring of support cable laying.
The test waveform source (1), amplifier (3) can be physically located in annular electromagnetic sensor (2) nearby or
At which, to reduce the introducing of preamplifier (3) noise to the signal obtained by receiver sensor component.
Advantages of the present invention:
Electromagnetic type data link of the present invention for physics survey system, design is reasonable, by passing its magnetic induction
The low frequency sensitivity of sensor is combined with the measured value of the high-frequency response obtained using alignment loop, determines its receiver system
Calibration factor, improve exploration efficiency and detection accuracy.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is described in further detail:
Fig. 1 is the principle of the present invention schematic diagram.
Specific embodiment
Embodiment 1
Present embodiments provide the electromagnetic type data link for physics survey system, it is characterised in that: described is used for object
The electromagnetic type data link of reason survey system includes test waveform source (1), annular electromagnetic sensor (2), amplifier (3), number
According to receiver (4), data processor (5)；
Wherein: test waveform source (1), data sink (4) and data processor (5) can be located in aircraft (3), and
By being connected to annular electromagnetic sensor (2) along the communication link of towing cable and the armouring of support cable laying.
The test waveform source (1), amplifier (3) can be physically located in annular electromagnetic sensor (2) nearby or
At which, to reduce the introducing of preamplifier (3) noise to the signal obtained by receiver sensor component.
Claims (2)
1. being used for the electromagnetic type data link of physics survey system, it is characterised in that: described for physics survey system
Electromagnetic type data link include test waveform source (1), annular electromagnetic sensor (2), amplifier (3), data sink (4),
Data processor (5)；
Wherein: test waveform source (1), data sink (4) and data processor (5) can be located in aircraft (3), and
By being connected to annular electromagnetic sensor (2) along the communication link of towing cable and the armouring of support cable laying.
2. the electromagnetic type data link described in accordance with the claim 1 for physics survey system, it is characterised in that: described
Test waveform source (1), amplifier (3) can be physically located in annular electromagnetic sensor (2) nearby or at which, before reducing
Set the introducing of amplifier (3) noise to the signal obtained by receiver sensor component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210196.7A CN109839667A (en) | 2017-11-28 | 2017-11-28 | Electromagnetic type data link for physics survey system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210196.7A CN109839667A (en) | 2017-11-28 | 2017-11-28 | Electromagnetic type data link for physics survey system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109839667A true CN109839667A (en) | 2019-06-04 |
Family
ID=66879316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210196.7A Pending CN109839667A (en) | 2017-11-28 | 2017-11-28 | Electromagnetic type data link for physics survey system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109839667A (en) |
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2017
- 2017-11-28 CN CN201711210196.7A patent/CN109839667A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190604 |