Steady weak magnetic-field measurement apparatus based on Wigan effect
A weak magnetic field and Wiegand effect technology, applied in the direction of the size/direction of the magnetic field, can solve the problems of easy damage, poor temperature stability, etc., and achieve the effects of easy portability, small size, and simple measurement operation
Inactive Publication Date: 2011-02-16
FOSHAN UNIVERSITY
View PDF2 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although the Hall device used in the measurement method based on the Hall effect has high sensitivity and small size, its temperature stability is poor, the accuracy is generally only 0.5% to 5%, and it is easy to damage
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The present invention is further described in detail through the following examples.
[0021] See Figure 1-4 As shown, a steady weak magnetic field measuring instrument based on the Wiegand effect of the present invention is composed of a DC power supply 1, a steady weak magnetic field measuring rod 8, a digital acquisition card 5, and a computer 6, and a steady weak magnetic field measurement supported by a bracket 7 The rod 8 is composed of a probe 3, a high-speed motor 4, and a rotating shaft 9 and is wrapped by a shell. The probe 3 is composed of a Wiegand sensor 3-1, a commutator 3-2, and an electric brush 3-3. The commutator 3-2 consists of the first-lobe commutator 3-2-1 and the second-lobe commutator 3-2-2. The arc range of the first-lobe commutator 3-2-1 is 210°- 170°, 240° is selected in this example, the arc range of the second-lobe commutator 3-2-2 is 90°-150°, and 120° is selected in this example. The commutator 3-2 is fixed on the rotating shaft 9, and a p...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Radian | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a steady weak magnetic-field measurement apparatus based on Wigan effect. The magnetic-field measurement apparatus comprises a direct current power supply, a Wigan sensor, a data collecting card and a computer, wherein the output end of the data collecting card is connected with the input port of the computer with software written by LabVIEW. The magnetic-field measurementapparatus is further provided with a steady weak magnetic-field measurement bar which is composed of a probe, a high speed motor and a rotation shaft and is coved by a shell, wherein the high speed motor drives the probe to rotate at high speed through the rotation shaft; the probe is arranged in a steady weak magnetic-field to be measured; and the signal output end of the probe is connected withthe input end of the data collecting card. The measurement apparatus can correctly measure the steady weak magnetic-field within a small range and displays the magnitude and the direction of the measured magnetic-field on the computer.
Description
Technical field [0001] The invention relates to the technical field of steady weak magnetic field measurement, in particular to a steady weak magnetic field measuring instrument based on the Wiegand effect. Background technique [0002] In recent years, with the continuous development of magnetic field measurement technology, the measurement range has reached 10 -15 ~10 3 T has been widely used in various fields such as geophysics, space technology, military engineering, industry, biology, medicine, and archaeology. At present, the more mature magnetic field measurement methods mainly include electromagnetic induction method, Hall effect method, magnetic saturation method, nuclear magnetic resonance method, superconducting effect method and magneto-optical effect method. [0003] Different measurement methods are suitable for different measurement ranges and have different measurement requirements. For the measurement of a steady magnetic field, the commonly used detection coil me...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R33/02
Inventor 曹辉李成龙梁兆基江少青
Owner FOSHAN UNIVERSITY