CN204536518U - A kind of micro-magnetic-field measurement experiment instrument - Google Patents
A kind of micro-magnetic-field measurement experiment instrument Download PDFInfo
- Publication number
- CN204536518U CN204536518U CN201520276054.0U CN201520276054U CN204536518U CN 204536518 U CN204536518 U CN 204536518U CN 201520276054 U CN201520276054 U CN 201520276054U CN 204536518 U CN204536518 U CN 204536518U
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- Prior art keywords
- giant magnetoresistance
- magnetoresistance sensor
- magnetic
- experiment instrument
- sensor
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Abstract
The utility model belongs to terrestrial magnetic field laboratory equipment preparation field, relate to a kind of micro-magnetic-field measurement experiment instrument, this experiment instrument comprises giant magnetoresistance sensor, described giant magnetoresistance sensor is placed in two blocks of opposite polarity magnet, described giant magnetoresistance sensor is placed on a supporting seat, described supporting seat comprises U-shaped deck, the openend of U-shaped deck is horizontally through a rotating shaft, described rotating shaft is fixed with pallet, giant magnetoresistance sensor is placed in pallet and fixes, and the bottom of U-shaped deck is connected on a base by bearing.Originally novel have adjustable-angle and spinfunction.Because giant magnetoresistance sensor has sensitive axes problem, supporting seat can solve the puzzlement that sensitive axes is brought, can adjusting angle arbitrarily, and giant magnetoresistance sensor is rotated freely in magnetic field.According to regulating the angle of sensor, and the detection of max min and observation, substantially solve this difficult problem of sensitive axes, volume is little, lightweight, is easy to carry, and uses very convenient, and precision is high.
Description
Technical field
The utility model belongs to terrestrial magnetic field laboratory equipment preparation field, particularly relates to a kind of micro-magnetic-field measurement experiment instrument.
Background technology
The measurement of magnetic flux, magnetic flux density, magnetomotive force, magnetic field intensity etc. in space or magnetic material.It is one of content of magnetics measurement amount.The magnetic flux density in space and the proportional relation of magnetic field intensity, the measurement of space magnetic field intensity is in fact also the measurement of magnetic flux density.Thus magnetic flux density is actually with magnetometer survey.Magnetic-field measurement mainly utilizes magnetic measurement instrument to carry out.According to the character in tested magnetic field, magnetic-field measurement is divided into stationary magnetic field to measure and variation magnetic field is measured.
Measured Weak magentic-field by micro-magnetic-field measurement experiment instrument, traditional experiment instrument adopts Hall element, traditional side such as inductive coil time device.Precision is low, and required volume is large.Most of rugged surroundings can not be adapted to, change insensitive to small magnetic field.
Utility model content
It is little, lightweight that technical problem to be solved in the utility model is to provide a kind of volume, is easy to carry, and uses very convenient, micro-magnetic-field measurement experiment instrument that precision is high.
The utility model realizes like this, a kind of micro-magnetic-field measurement experiment instrument, this experiment instrument comprises giant magnetoresistance sensor, described giant magnetoresistance sensor is placed in two blocks of opposite polarity magnet, and described giant magnetoresistance sensor is placed on a supporting seat, and described supporting seat comprises U-shaped deck, the openend of U-shaped deck is horizontally through a rotating shaft, described rotating shaft is fixed with pallet, and giant magnetoresistance sensor is placed in pallet and fixes, and the bottom of U-shaped deck is connected on a base by bearing.
Further, described giant magnetoresistance sensor is connected with working power, the output terminal connection signal receiver of giant magnetoresistance sensor, signal receiver is by signal transmission to PC of reception, described PC is connected with display screen, is shown by signal, and described signal receiver is also connected with amplifier by an output terminal, described amplifier is powered by working power, at the output terminal connecting luminous diode of amplifier.
Further, described giant magnetoresistance sensor adopts the AA002-02 model sensor of NVE company.
Compared with prior art, beneficial effect is the utility model: the micro-magnetic-field measurement experiment instrument of the utility model, can measure small changes of magnetic field.This micro-magnetic-field measurement experiment instrument have employed the single-chip microcomputer of 32, demonstrates the Magnetic Field of collection with one piece of display screen.Under can being operated in the voltage of 5v, all can provide with charger for mobile phone or data line.
The supporting seat adopted.There is adjustable-angle and spinfunction.Because giant magnetoresistance sensor has sensitive axes problem, supporting seat can solve the puzzlement that sensitive axes is brought, can adjusting angle arbitrarily, and giant magnetoresistance sensor is rotated freely in magnetic field.According to regulating the angle of sensor, and the detection of max min and observation, substantially solve this difficult problem of sensitive axes.
This novel volume is little, lightweight, and be easy to carry, and use very convenient, precision is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the supporting seat that the utility model embodiment provides;
Fig. 2 is the circuit module block diagram of the experiment instrument that the utility model embodiment provides.
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, a kind of micro-magnetic-field measurement experiment instrument, this experiment instrument comprises giant magnetoresistance sensor 1, giant magnetoresistance sensor 1 is placed in two blocks of opposite polarity magnet, and described giant magnetoresistance sensor 1 is placed on a supporting seat, and described supporting seat comprises U-shaped deck 4, the openend of U-shaped deck 4 is horizontally through a rotating shaft 3, described rotating shaft is fixed with pallet 2, giant magnetoresistance sensor 1 is placed in pallet 2 and fixes, and the bottom of U-shaped deck 4 is connected on a base 6 by bearing 5.
See Fig. 2, described giant magnetoresistance sensor is connected with working power, the output terminal connection signal receiver of giant magnetoresistance sensor, signal receiver is by signal transmission to PC of reception, described PC is connected with display screen, is shown by signal, and described signal receiver is also connected with amplifier by an output terminal, described amplifier is powered by working power, at the output terminal connecting luminous diode of amplifier.
Working power is direct current, the N level in magnetic field and S level are bar magnets in analog, giant magnetoresistance sensor adopt the AA002-02 of NVE company or other, amplifier adopt LM324 chip or other, working power voltage is input on giant magnetoresistance sensor and amplifier respectively, giant magnetoresistance sensor induces magnitude of voltage and is input to respectively on PC and amplifier again in magnetic field, the distribution plan in magnetic field can be demonstrated on commenting again after PC process, lumination of light emitting diode is made through amplifier amplification sensor output voltage, along with the change in magnetic field, light-emitting diode luminance also changes, the change of magnetic field intensity power in analog can be demonstrated intuitively.
Giant magnetoresistance sensor in addition owing to utilizing is very small and exquisite and energy consumption is very low, just can normally work under the voltage of 5V, and itself there is again the ability of impression changes of magnetic field that can be responsive, in-40 ~ 125 DEG C, still can ensure normal work, anti-adverse environment very competent.Thus the micro-magnetic-field measurement experiment instrument utilizing giant magnetoresistance sensor to make just have gently little, economize energy, most of rugged surroundings can be adapted to, sensitive measurement goes out the excellent in performance such as small magnetic field change.These excellent in performance can improve science and technology now to a great extent.The advantage made new advances is manifested in the measurement, earthquake prediction, terrestrial magnetic field measurement of dip angle etc. of mine locating, terrestrial magnetic field.Micro-magnetic-field measurement experiment instrument in fact only has 5 centimeter square sizes, and volume is little, lightweight, is easy to carry, and uses very convenient, only needs charger for mobile phone or data line just can provide power supply, and power supply is easy to find, and need not be equipped with separately.
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 (3)
1. a micro-magnetic-field measurement experiment instrument, it is characterized in that, this experiment instrument comprises giant magnetoresistance sensor, described giant magnetoresistance sensor is placed in two blocks of opposite polarity magnet, and described giant magnetoresistance sensor is placed on a supporting seat, and described supporting seat comprises U-shaped deck, the openend of U-shaped deck is horizontally through a rotating shaft, described rotating shaft is fixed with pallet, and giant magnetoresistance sensor is placed in pallet and fixes, and the bottom of U-shaped deck is connected on a base by bearing.
2. micro-magnetic-field measurement experiment instrument as claimed in claim 1, it is characterized in that, described giant magnetoresistance sensor is connected with working power, the output terminal connection signal receiver of giant magnetoresistance sensor, signal receiver is by signal transmission to PC of reception, and described PC is connected with display screen, signal is shown, described signal receiver is also connected with amplifier by an output terminal, and described amplifier is powered by working power, at the output terminal connecting luminous diode of amplifier.
3. micro-magnetic-field measurement experiment instrument as claimed in claim 2, is characterized in that, described giant magnetoresistance sensor adopts the AA002-02 model sensor of NVE company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276054.0U CN204536518U (en) | 2015-04-30 | 2015-04-30 | A kind of micro-magnetic-field measurement experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520276054.0U CN204536518U (en) | 2015-04-30 | 2015-04-30 | A kind of micro-magnetic-field measurement experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204536518U true CN204536518U (en) | 2015-08-05 |
Family
ID=53750504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520276054.0U Expired - Fee Related CN204536518U (en) | 2015-04-30 | 2015-04-30 | A kind of micro-magnetic-field measurement experiment instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204536518U (en) |
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2015
- 2015-04-30 CN CN201520276054.0U patent/CN204536518U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150805 Termination date: 20160430 |