CN209182273U - The power frequency detection device of nuclear magnetic resonance three-component probe - Google Patents
The power frequency detection device of nuclear magnetic resonance three-component probe Download PDFInfo
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- CN209182273U CN209182273U CN201821781425.0U CN201821781425U CN209182273U CN 209182273 U CN209182273 U CN 209182273U CN 201821781425 U CN201821781425 U CN 201821781425U CN 209182273 U CN209182273 U CN 209182273U
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- module
- power frequency
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- total power
- frequency component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The utility model discloses a kind of power frequency detection devices of nuclear magnetic resonance three-component probe.The detection device includes power module, pre-amplifying module, narrow-band filtering module, AGC module, zero crossing comparison module, control module, host computer and three-component probe；Power module is connected with pre-amplifying module, narrow-band filtering module, AGC module and zero crossing comparison module respectively, three-component probe output end and control module output end are connected with pre-amplifying module input terminal respectively, pre-amplifying module output end is connected with narrow-band filtering module input, narrow-band filtering module output end is connected with AGC module input, AGC module output end is connected with zero crossing comparison module input terminal, zero crossing comparison module output end is connected with control module input terminal, and control module is interactively communicated with host computer.The detection device of the utility model can be quickly detected vector phase total power frequency component after being added in tri- direction X, Y and Z, save the time for nuclear magnetic resonance underground water detection operations.
Description
Technical field
The utility model relates to the power frequency detection technique fields of ground nuclear-magnetism equipment, total in particular to a kind of nuclear-magnetism
The power frequency detection device that the three-component that shakes is popped one's head in.
Background technique
Currently, shortage of water resources problem is got worse, it is especially short in northern China arid area and semiarid zone water
Scarce problem is the most prominent, this has become the major influence factors for restricting China's economic development.Due to water resources shortage, people start
More concern underground water.Therefore, high-precision, high efficiency, the underground water detection method of low cost are found for solving China's water
Shortage of resources problem is extremely important.
Modern science and technology are constantly progressive, and are provided effective technical support for underground water detection, can be passed through a variety of objects
The occurrence status of spy means exploration underground water.Nuclear magnetic resonance underground water Detection Techniques are uniquely can directly to survey in the world at this stage
Obtain the detection method of underground saturation state.Since nuclear magnetic resonance underground water Detection Techniques have high resolution, high efficiency, information content
The advantages such as abundant and explanation results are unique, therefore it is widely used in underground water detection engineering.But due to logical
Cross that the NMR signal amplitude that receiving coil receives is minimum, and ambient noise is enough to be flooded, and industrial frequency harmonic noise pair
The influence for receiving signal is the most serious.When carrying out underground water detection, under ideal environment unavoidably by
To the influence of industrial frequency harmonic.The presence of industrial frequency harmonic can make the signal conditioning module in reception device reach saturation state in advance,
Subsequent data inversion effect is affected, so that the accuracy of nuclear magnetic resonance detection result is reduced, therefore, to power frequency component
Detection is particularly important.In addition to this, existing power frequency detection device is nearly all a probe coil detection device, detection
Probe is fixed on a tripod upper end, is only capable of the power frequency data of detection space segment position, will cause test data in this way
It is thin, frequency, the amplitude and phase of power frequency can not be accurately detected, are only capable of calculating by the empirical equation in later period or according to existing
Data carry out software simulation and judged, lack the necessary support of measured data, it is difficult to solve the problems, such as power frequency detection technique.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
For this purpose, the purpose of this utility model is that proposing a kind of power frequency detection device of nuclear magnetic resonance three-component probe.
To achieve the goals above, the technical solution of the utility model provides a kind of work of nuclear magnetic resonance three-component probe
Frequency detection device, comprising: power module, pre-amplifying module, narrow-band filtering module, AGC module, zero crossing comparison module, control
Module, host computer and three-component probe；Wherein, the power module respectively with the pre-amplifying module, narrow-band filtering module,
AGC module is connected with zero crossing comparison module, the output end of the output end of three-component probe and control module respectively with institute
The input terminal for stating pre-amplifying module is connected, the input of the output end of the pre-amplifying module and the narrow-band filtering module
End is connected, and the output end of the narrow-band filtering module is connected with the input terminal of the AGC module, the AGC module it is defeated
Outlet is connected with the input terminal of the zero crossing comparison module, the output end of the zero crossing comparison module and the control module
Input terminal is connected, and the control module is interacted with the host computer and communicated；The power module, for being described preposition
Amplification module, narrow-band filtering module, AGC module and zero crossing comparison module power supply；The three-component probe, for detecting X respectively
The component power frequency component in direction, Y-direction and Z-direction swears the component power frequency component of the X-direction, Y-direction and Z-direction
Amount phase is added to obtain total power frequency component；The three-component probe is also used to vector phase total power frequency component hair after being added
It send to the pre-amplifying module；The pre-amplifying module, for receiving the vector phase total power frequency component after being added,
And processing is amplified using initial gain factor total power frequency component after being added to the vector phase；The preposition amplification mould
Block is also used to total power frequency component after enhanced processing being sent to the narrow-band filtering module；The narrow-band filtering module,
For receiving total power frequency component after the enhanced processing, total power frequency component after the enhanced processing is filtered；It is described
Narrow-band filtering module is also used to filtered total power frequency component being sent to the AGC module；The AGC module, for receiving
Filtered total power frequency component carries out the locking of power frequency amplitude to filtered total power frequency component；The AGC module,
It is also used to total power frequency component after locking being sent to the zero crossing comparison module；The zero crossing comparison module, for receiving
Total power frequency component after stating locking, and total power frequency component after the locking is sampled；The zero crossing comparison module, is also used
In by sampling after total power frequency component be sent to the control module；The control module, it is total after the sampling for receiving
Power frequency component, and analog-to-digital conversion is carried out to total power frequency component after the sampling；The control module is also used to digital-to-analogue conversion
Total power frequency component afterwards is sent to the host computer；And the host computer, for receiving total power frequency after the digital-to-analogue conversion
Signal, and show total power frequency component after the analog-to-digital conversion.
Preferably, the control module is also used to control the pre-amplifying module and automatically adjusts the initial gain system
Number；And the pre-amplifying module, it is also used to using the gain coefficient after adjusting to vector phase chief engineer after being added
Frequency signal amplifies processing.
Preferably, the power frequency detection device of the nuclear magnetic resonance three-component probe further include: RS485 communication bus；And
The control module is interacted with the host computer by the RS485 communication bus and is communicated.
Preferably, the power frequency detection device of the nuclear magnetic resonance three-component probe further include: 24V battery；And pass through
The 24V battery is power module power supply.
Preferably, the control module uses the single-chip microcontroller MSP430FE427 of Texas Instruments.
Preferably, the pre-amplifying module uses the chip I NA163 of Texas Instruments.
Preferably, the operational amplifier in the narrow-band filtering module and zero crossing comparison module is all made of chip TLC2272.
Preferably, the operational amplifier in the AGC module uses chip VCA810U.
The utility model has the beneficial effects that the power frequency of nuclear magnetic resonance three-component probe provided by the utility model detects dress
It sets, the component power frequency component of the X-direction, Y-direction and the Z-direction that are detected by three-component probe to it carries out vector phase and is added
Total power frequency component is obtained, achievees the purpose that be quickly detected total power frequency component, is saved for nuclear magnetic resonance underground water detection operations
Time, and then improve the working efficiency of entire nuclear magnetic resonance underground water detection；Further, it is used by pre-amplifying module
Initial gain factor amplifies processing to total power frequency component that vector phase is added, and then passes through narrow-band filtering module pair
Total power frequency component after enhanced processing is filtered, then carries out power frequency amplitude to filtered total power frequency component by AGC module
Locking, and then samples total power frequency component after locking by zero crossing comparison module, then after passing through control module to sampling
Total power frequency component carry out analog-to-digital conversion, finally by host computer show analog-to-digital conversion after total power frequency component, connect host computer
The total power frequency component received is even more ideal, provides sufficient data foundation for subsequent data processing and inversion interpretation, improves
The accuracy of data processing and inversion interpretation quickly to obtain geological information, and then improves entire nuclear magnetic resonance underground
The detection accuracy of water.
Detailed description of the invention
Fig. 1 shows the schematic block diagram of the utility model；
Fig. 2 shows the circuit diagrams of the control module in Fig. 1；
Fig. 3 shows the circuit diagram of the zero crossing comparison module in Fig. 1；
Fig. 4 shows the circuit diagram of the AGC module in Fig. 1；
Fig. 5 shows the circuit diagram of the narrow-band filtering module in Fig. 1.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited to the limitation of following public specific embodiment.
As shown in Figure 1, the utility model provides a kind of power frequency detection device of nuclear magnetic resonance three-component probe, comprising:
Power module, pre-amplifying module, narrow-band filtering module, AGC module, zero crossing comparison module, control module, host computer and three points
Amount probe；Wherein, the power module respectively with the pre-amplifying module, narrow-band filtering module, AGC module and Zero-cross comparator
Module is connected, and the output end of the three-component probe and the output end of control module are defeated with the pre-amplifying module respectively
Enter end to be connected, the output end of the pre-amplifying module is connected with the input terminal of the narrow-band filtering module, the narrowband
The output end of filter module is connected with the input terminal of the AGC module, the output end and the Zero-cross comparator of the AGC module
The input terminal of module is connected, and the output end of the zero crossing comparison module is connected with the input terminal of the control module, described
Control module is interacted with the host computer and is communicated；The power module, for being the pre-amplifying module, narrow-band filtering
Module, AGC module and zero crossing comparison module power supply；The three-component probe, for detecting X-direction, Y-direction and Z-direction respectively
Component power frequency component, vector phase is carried out to the component power frequency component of the X-direction, Y-direction and Z-direction and is added to obtain chief engineer
Frequency signal；The three-component probe, is also used to vector phase total power frequency component after being added being sent to the preposition amplification mould
Block；The pre-amplifying module for receiving the vector phase total power frequency component after being added, and uses initial gain factor
Total power frequency component after being added to the vector phase amplifies processing；The pre-amplifying module, being also used to will be through over-discharge
Treated greatly, and total power frequency component is sent to the narrow-band filtering module；The narrow-band filtering module, for receiving the amplification
Treated total power frequency component, is filtered total power frequency component after the enhanced processing；The narrow-band filtering module, is also used
In filtered total power frequency component is sent to the AGC module；The AGC module, for receiving the filtered chief engineer
Frequency signal carries out the locking of power frequency amplitude to filtered total power frequency component；The AGC module, after being also used to lock
Total power frequency component is sent to the zero crossing comparison module；The zero crossing comparison module, for receiving total power frequency after the locking
Signal, and total power frequency component after the locking is sampled；The zero crossing comparison module, the chief engineer after being also used to sample
Frequency signal is sent to the control module；The control module, for receiving total power frequency component after the sampling, and to described
Total power frequency component after sampling carries out analog-to-digital conversion；The control module is also used to total power frequency component hair after digital-to-analogue conversion
Give the host computer；And the host computer, for receiving total power frequency component after the digital-to-analogue conversion, and show the mould
Total power frequency component after number conversion.It is described initial to be also used to control the pre-amplifying module automatic adjustment for the control module
Gain coefficient；And the pre-amplifying module, after being also used to be added the vector phase using the gain coefficient after adjusting
Total power frequency component amplify processing.The power frequency detection device of the nuclear magnetic resonance three-component probe further include: 24V electric power storage
Pond；And passing through the 24V battery is power module power supply.
The power frequency detection device of nuclear magnetic resonance three-component probe provided by the utility model, examines it by three-component probe
The component power frequency component of the X-direction, Y-direction and the Z-direction that measure carries out vector phase and is added to obtain total power frequency component, reaches quick
It detects the purpose of total power frequency component, has been saved the time for nuclear magnetic resonance underground water detection operations, and then improve entire nuclear-magnetism
The working efficiency that the underground water that resonates detects；Further, use initial gain factor to vector phase by pre-amplifying module
It is added obtained total power frequency component and amplifies processing, and then by narrow-band filtering module to total power frequency component after enhanced processing
It is filtered, then power frequency amplitude lock is carried out to filtered total power frequency component by AGC module (i.e. automatic growth control module)
It is fixed, and then total power frequency component after locking is sampled by zero crossing comparison module, then after passing through control module to sampling
Total power frequency component carries out analog-to-digital conversion, and total power frequency component after analog-to-digital conversion is shown finally by host computer receives host computer
Total power frequency component it is even more ideal, sufficient data foundation is provided for subsequent data processing and inversion interpretation, improves number
According to the accuracy of processing and inversion interpretation, quickly to obtain geological information, and then entire nuclear magnetic resonance underground water is improved
Detection accuracy.In specific embodiment, the power frequency detection device of the nuclear magnetic resonance three-component probe of the utility model, by upper
Machine receives total power frequency component after digital-to-analogue conversion, at the same judged by host computer total power frequency component after the analog-to-digital conversion whether
In preset range, total power frequency component after the analog-to-digital conversion within a preset range when, just by host computer show the modulus turn
Total power frequency component after changing.Further, total power frequency component by host computer after the analog-to-digital conversion is not within a preset range
When, the information for adjusting initial gain factor, which is sent, to control module, then by control module receives the adjusting initial gain system
Several information simultaneously sends this information to pre-amplifying module, and then receives the adjusting initial gain system by pre-amplifying module
Several information, and the initial gain factor is automatically adjusted, finally by pre-amplifying module using the gain coefficient after adjusting
Total power frequency component after being added to vector phase amplifies processing.Technological means in above-mentioned specific embodiment belongs to existing
The innovative point of technology, the utility model does not lie in this.
Preferably, the power frequency detection device of the nuclear magnetic resonance three-component probe further include: RS485 communication bus；And
The control module is interacted with the host computer by the RS485 communication bus and is communicated, reach control module with it is upper
The purpose that machine interactively communicates in time.
Preferably, the pre-amplifying module uses the chip I NA163 of Texas Instruments.
Preferably, as shown in Fig. 2, the control module uses the single-chip microcontroller MSP430FE42X of Texas Instruments.
Preferably, as shown in figure 3, the operational amplifier in zero crossing comparison module uses chip TLC2272, as shown in figure 5,
Operational amplifier in narrow-band filtering module uses chip TLC2272.
Preferably, as shown in figure 4, the operational amplifier in the AGC module uses chip VCA810U.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of power frequency detection device of nuclear magnetic resonance three-component probe characterized by comprising power module, preposition amplification
Module, narrow-band filtering module, AGC module, zero crossing comparison module, control module, host computer and three-component probe；
Wherein, the power module respectively with the pre-amplifying module, narrow-band filtering module, AGC module and Zero-cross comparator mould
Block is connected, the output end of the three-component probe and the output end input with the pre-amplifying module respectively of control module
End is connected, and the output end of the pre-amplifying module is connected with the input terminal of the narrow-band filtering module, the narrowband filter
The output end of wave module is connected with the input terminal of the AGC module, the output end of the AGC module and the Zero-cross comparator mould
The input terminal of block is connected, and the output end of the zero crossing comparison module is connected with the input terminal of the control module, the control
Molding block is interacted with the host computer and is communicated；
The power module, for being supplied for the pre-amplifying module, narrow-band filtering module, AGC module and zero crossing comparison module
Electricity；
The three-component probe, for detecting the component power frequency component of X-direction, Y-direction and Z-direction respectively, to the X-direction, Y
Direction carries out vector phase with the component power frequency component of Z-direction and is added to obtain total power frequency component；
The three-component probe, is also used to vector phase total power frequency component after being added being sent to the pre-amplifying module；
The pre-amplifying module for receiving the vector phase total power frequency component after being added, and uses initial gain system
Several total power frequency components after being added to the vector phase amplify processing；
The pre-amplifying module is also used to total power frequency component after enhanced processing being sent to the narrow-band filtering mould
Block；
The narrow-band filtering module, for receiving total power frequency component after the enhanced processing, to total after the enhanced processing
Power frequency component is filtered；
The narrow-band filtering module is also used to filtered total power frequency component being sent to the AGC module；
The AGC module carries out work to filtered total power frequency component for receiving filtered total power frequency component
The locking of frequency amplitude；
The AGC module is also used to total power frequency component after locking being sent to the zero crossing comparison module；
The zero crossing comparison module is believed for receiving total power frequency component after the locking, and to total power frequency after the locking
It number is sampled；
The zero crossing comparison module is also used to total power frequency component after sampling being sent to the control module；
The control module, for receiving total power frequency component after the sampling, and to total power frequency component after the sampling into
Row analog-to-digital conversion；
The control module is also used to total power frequency component after digital-to-analogue conversion being sent to the host computer；And
The host computer for receiving total power frequency component after the digital-to-analogue conversion, and shows the chief engineer after the analog-to-digital conversion
Frequency signal.
2. the power frequency detection device of nuclear magnetic resonance three-component probe according to claim 1, which is characterized in that
The control module is also used to control the pre-amplifying module and automatically adjusts the initial gain factor；And
The pre-amplifying module is also used to using the total power frequency letter after being added to the vector phase of the gain coefficient after adjusting
Number amplify processing.
3. the power frequency detection device of nuclear magnetic resonance three-component probe according to claim 1, which is characterized in that further include:
RS485 communication bus；And
The control module is interacted with the host computer by the RS485 communication bus and is communicated.
4. the power frequency detection device of nuclear magnetic resonance three-component probe according to claim 1, which is characterized in that further include:
24V battery；And
It is power module power supply by the 24V battery.
5. the power frequency detection device of nuclear magnetic resonance three-component probe according to any one of claim 1 to 4, feature exist
In the control module uses the single-chip microcontroller MSP430FE427 of Texas Instruments.
6. the power frequency detection device of nuclear magnetic resonance three-component probe according to any one of claim 1 to 4, feature exist
In the pre-amplifying module uses the chip I NA163 of Texas Instruments.
7. the power frequency detection device of nuclear magnetic resonance three-component probe according to any one of claim 1 to 4, feature exist
In the operational amplifier in the narrow-band filtering module and zero crossing comparison module is all made of chip TLC2272.
8. the power frequency detection device of nuclear magnetic resonance three-component probe according to any one of claim 1 to 4, feature exist
In the operational amplifier in the AGC module uses chip VCA810U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821781425.0U CN209182273U (en) | 2018-10-31 | 2018-10-31 | The power frequency detection device of nuclear magnetic resonance three-component probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821781425.0U CN209182273U (en) | 2018-10-31 | 2018-10-31 | The power frequency detection device of nuclear magnetic resonance three-component probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209182273U true CN209182273U (en) | 2019-07-30 |
Family
ID=67362784
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821781425.0U Expired - Fee Related CN209182273U (en) | 2018-10-31 | 2018-10-31 | The power frequency detection device of nuclear magnetic resonance three-component probe |
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|---|---|
| CN (1) | CN209182273U (en) |
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2018
- 2018-10-31 CN CN201821781425.0U patent/CN209182273U/en not_active Expired - Fee Related
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