CN204945405U - A kind of magnetometer - Google Patents
A kind of magnetometer Download PDFInfo
- Publication number
- CN204945405U CN204945405U CN201520712491.2U CN201520712491U CN204945405U CN 204945405 U CN204945405 U CN 204945405U CN 201520712491 U CN201520712491 U CN 201520712491U CN 204945405 U CN204945405 U CN 204945405U
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- probe
- cpld
- circuit
- primary controller
- main frame
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Abstract
The utility model belongs to magnetic field measuring device field, particularly relates to a kind of magnetometer, comprises probe, main frame, shell, button and display screen, probe is connected with main frame by connecting line, main frame is placed in shell, button embeds shell, display screen embeds shell, described main frame comprises high frequency excitation device, signal deteching circuit, primary controller and CPLD, electronic compass is connected at the input end of primary controller, primary controller is inputed to after measuring magnetic field, high-frequency signal source is by exciting probe after a power amplifier, probe is connected to electric capacity successively and joins humorous filtering circuit, receiving circuit, CPLD is connected to after amplifying circuit, by the equally accurate frequency measurement module in CPLD, frequency measurement is carried out to signal, CPLD is connected with primary controller, display screen is connected for showing the frequency measured with primary controller, the utility model overcomes the not high problem of proton magnetometer precision, take into account simple and practical and economy simultaneously.
Description
Technical field
The utility model belongs to magnetic field measuring device field, particularly relates to a kind of magnetometer.
Background technology
Along with the development and progression of modern times various technology, the importance of terrestrial magnetic field displays in the every field of human lives.The fields such as underground space detection, defence and military, seafari, space exploration that are included in all need to accurately measure terrestrial magnetic field.Existing metering system is more, measuring principle and the different meetings of method cause precision different, measure that complexity is different, cost effectiveness is different.
Present stage can have a variety of classification for the instrument of geomagnetic field measuring according to principle or according to structure, wherein proton magnetometer with its simple and effective advantage in occupation of mainstream market.But this equipment is due to the problem of principal level, place its measuring accuracy larger in neighbourhood noise is often difficult to satisfactory.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of magnetometer, is a kind of magnetostatic survey sensor of high precision that grow up on the basis of proton-precession magnetometer, that make based on dynamical nuclear polarization principle.Overcome the problem that proton magnetometer precision is not high, take into account simple and practical and economy simultaneously.
The utility model is achieved in that a kind of magnetometer, comprises probe, main frame, shell, button and display screen, probe is connected with main frame by connecting line, main frame is placed in shell, button embeds shell, display screen embeds shell, described main frame comprises high frequency excitation device, signal deteching circuit, primary controller and CPLD, electronic compass is connected at the input end of primary controller, primary controller is inputed to after measuring magnetic field, high-frequency signal source is by exciting probe after a power amplifier, probe is connected to electric capacity successively and joins humorous filtering circuit, receiving circuit, CPLD is connected to after amplifying circuit, by the equally accurate frequency measurement module in CPLD, frequency measurement is carried out to signal, CPLD is connected with primary controller, display screen is connected with primary controller for showing the frequency measured.
Further, described CPLD and electric capacity are joined humorous filtering circuit and are connected, and select joining humorous electric capacity for being joined humorous filtering circuit by electric capacity.
Further, described CPLD connects a direct current polarized circuit, and described direct current polarization circuit is connected with probe, and CPLD controls the timing of direct current polarization circuit to probe output DC pulse, and now probe will export Larmor frequency signal.
Further, described probe by exciting/receiving coil and the free-atom aqueous solution being rich in nucleon be sealed in organic glass bottle form.
Compared with prior art, beneficial effect is the utility model:
1) the utility model design sequential is compact, measures efficiency high, in seconds just can realize;
2) in measuring process, first adopt electronic compass bigness scale magnetic field to carry out joining humorous, carry out high efficiency resonance to improve measuring accuracy;
3) measuring overall process is all automatic measurement from start to end, easy to use; Instrument lightweight and portable in volume, is convenient for carrying;
4) user can see the information of measurement intuitively in display screen, comprises position and frequency etc., easy to use, by force functional.
Accompanying drawing explanation
Fig. 1 is the circuitry structured flowchart that the utility model embodiment provides;
Fig. 2 is probe schematic diagram;
Fig. 3 is shell front panel schematic diagram;
Wherein, 1. shell; 2. display screen; 3. probe interface; 4. power switch; 5. button; 6. charging inlet; 7. reset key; 8. free-atom aqueous solution; 9. excite/receiving coil.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See Fig. 1 composition graphs 2 and Fig. 3, a kind of magnetometer, comprises probe, main frame, shell 1, button 5 and display screen 2, probe is connected with main frame by connecting line, main frame is placed in shell 1, button 5 embeds shell 1, display screen 2 embeds shell 1, described main frame comprises high frequency excitation device, signal deteching circuit, primary controller and CPLD, electronic compass is connected at the input end of primary controller, primary controller is inputed to after measuring magnetic field, the input end of primary controller also connects keyboard and DPS carries out inputting and locating, high-frequency signal source is by exciting probe after a power amplifier, probe is connected to electric capacity successively and joins humorous filtering circuit, receiving circuit, CPLD is connected to after amplifying circuit, amplifying circuit comprises pre-amplification circuit and multi-stage process circuit, by the equally accurate frequency measurement module in CPLD, frequency measurement is carried out to signal, CPLD is connected with primary controller, display screen is connected with primary controller for showing the frequency measured.CPLD and electric capacity are joined humorous filtering circuit and are connected, and select joining humorous electric capacity for being joined humorous filtering circuit by electric capacity.CPLD connects a direct current polarized circuit, and direct current polarization circuit is connected with probe, and CPLD controls the timing of direct current polarization circuit to probe output DC pulse, and now probe will export Larmor frequency signal.
See Fig. 2 probe by exciting/receiving coil and the free-atom aqueous solution being rich in nucleon be sealed in organic glass bottle form.
See Fig. 3, the front panel of main frame is provided with successively display screen 2, power switch 4, button 5, charging inlet 6, reset button 7 and the probe interface 3 for being connected probe; Pop one's head in primarily of the free-atom aqueous solution 8 be loaded in sealed glass jars and be entangled in exciting on container/receiving coil 9 and form, excite/receiving coil 9 is by being connected with magnetometer main frame for the probe interface 3 connecting probe.Shell is the plastic casing being covered with metal envelope at internal layer, and shell is reserved with the space of inlaying display screen and button.Display screen is embedded on shell, is connected with the magnetometer main frame of enclosure.Button is embedded on shell, is connected with the magnetometer main frame of enclosure.
System work process is as follows:
1) 5 are pushed button after turning on the power switch 4, system starts.Under the high-frequency signal source excitation that frequency is 60.7MHz, OVERHAUSER effect occurs probe interior free-atom aqueous solution 8, and (proton in free-atom aqueous solution is active, etc. DC pulse arrive will output frequency signal), in magnetometer main frame, CPLD controls the timing of direct current polarization circuit to probe output DC pulse, and now probe will export Larmor frequency signal.
2) can export 3 axle magnetic-field components after electronic compass work, data send primary controller to, and primary controller calculates terrestrial magnetic field numerical value.Base area the Magnetic Field Numerical Calculation goes out to join humorous electric capacity, then joins humorous filtering circuit with CPLD by electric capacity and select joining humorous electric capacity.
3) after joining humorous completing, probe is switched to metering circuit, the signal that probe exports enters electric capacity and joins humorous filtering circuit, after frequency-selecting is amplified, signal converts sine wave to square wave by shaping circuit after carrying out narrow-band filtering, amplification respectively by receiving circuit, pre-amplification circuit, multistage amplifier circuit.
4) the equally accurate frequency measurement module in CPLD carries out frequency measurement to square-wave signal, sends the data to primary controller.Primary controller demonstrates the current frequency measured by the display screen on magnetometer main frame front panel.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a magnetometer, is characterized in that, comprises probe, main frame, shell, button and display screen, probe is connected with main frame by connecting line, main frame is placed in shell, button embeds shell, display screen embeds shell, described main frame comprises high frequency excitation device, signal deteching circuit, primary controller and CPLD, electronic compass is connected at the input end of primary controller, primary controller is inputed to after measuring magnetic field, high-frequency signal source is by exciting probe after a power amplifier, probe is connected to electric capacity successively and joins humorous filtering circuit, receiving circuit, CPLD is connected to after amplifying circuit, by the equally accurate frequency measurement module in CPLD, frequency measurement is carried out to signal, CPLD is connected with primary controller, display screen is connected with primary controller for showing the frequency measured.
2. according to magnetometer according to claim 1, it is characterized in that, described CPLD and electric capacity are joined humorous filtering circuit and are connected, and select joining humorous electric capacity for being joined humorous filtering circuit by electric capacity.
3. according to magnetometer according to claim 1, it is characterized in that, described CPLD connects a direct current polarized circuit, and described direct current polarization circuit is connected with probe, CPLD controls the timing of direct current polarization circuit to probe output DC pulse, and now probe will export Larmor frequency signal.
4., according to magnetometer according to claim 1, it is characterized in that, described probe by exciting/receiving coil and the free-atom aqueous solution being rich in nucleon be sealed in organic glass bottle form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712491.2U CN204945405U (en) | 2015-09-15 | 2015-09-15 | A kind of magnetometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712491.2U CN204945405U (en) | 2015-09-15 | 2015-09-15 | A kind of magnetometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204945405U true CN204945405U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520712491.2U Expired - Fee Related CN204945405U (en) | 2015-09-15 | 2015-09-15 | A kind of magnetometer |
Country Status (1)
| Country | Link |
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| CN (1) | CN204945405U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608000A (en) * | 2017-09-01 | 2018-01-19 | 北京奥地探测仪器有限公司 | A kind of probe of proton magnetometer |
| CN107643546A (en) * | 2017-10-31 | 2018-01-30 | 吉林大学 | A kind of magnetometer based on statistical stacking method |
| CN110333544A (en) * | 2019-03-05 | 2019-10-15 | 江苏省新沂地震台 | Vector proton magnetometer intelligence frequency-selecting method |
-
2015
- 2015-09-15 CN CN201520712491.2U patent/CN204945405U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608000A (en) * | 2017-09-01 | 2018-01-19 | 北京奥地探测仪器有限公司 | A kind of probe of proton magnetometer |
| CN107643546A (en) * | 2017-10-31 | 2018-01-30 | 吉林大学 | A kind of magnetometer based on statistical stacking method |
| CN107643546B (en) * | 2017-10-31 | 2024-02-23 | 吉林大学 | Magnetometer based on statistical superposition method |
| CN110333544A (en) * | 2019-03-05 | 2019-10-15 | 江苏省新沂地震台 | Vector proton magnetometer intelligence frequency-selecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160915 |