High-precision relative magnetic field intensity measuring device

A technology of magnetic field strength and measuring device, applied in the direction of measuring device, measuring magnetic variable, instrument, etc., can solve the problems of limited wide application and large weight, and achieve the effect of improving measurement accuracy, low cost and wide application range
CN104898075AInactive Publication Date: 2015-09-09HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of detection of relative magnetic field intensity, and specifically relates to a high-precision relative magnetic field intensity measuring device suitable for the field of physics experiment teaching of institutions of higher learning and used for verifying the Biot-Savart law. The high-precision relative magnetic field intensity measuring device includes a magnetic resistance sensing device, a central control processing module and a fixed guide rail device. The device adopts a dual-axis magnetoresistive sensor and a bidirectional bias difference value algorithm, and can effectively eliminate or reduce external interference, thereby improving measurement precision, and the precision can reach 0.001mT. The high-precision relative magnetic field intensity measuring device provided by the invention is stable in system operation, high in integration level, and low in cost, the sensing device is flexible to use, an operation interface is simple and visual, and thus the device has a wide range of application.
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Description

technical field

[0001] The invention belongs to the field of detection of relative magnetic field strength, in particular to a high-precision relative magnetic field strength measuring device suitable for the field of physical experiment teaching in colleges and universities and used for verifying the Biot-Saffar law. Background technique

[0002] At present, the application of magnetic field has been very extensive, not only in the research of physical properties in modern science and the needs of physics teaching, but also in industrial and agricultural production, national defense and medical treatment. Magnetic sounding has become a necessary tool in the study of seismology, geophysics and astrophysics. Therefore, it is of great significance to study the method of measuring the magnetic field.

[0003] There are many methods to measure the magnetic field, such as fluxgate method, Hall effect method, magnetic resonance method, superconducting effect method, magneto-optic...

Claims

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