System for detecting oscillatory type AC magnetic signal for high pressure experiment
A high-voltage experiment and detection system technology, applied in the direction of magnetic performance measurement, etc., can solve the problems of inconvenience, difficulty and low success rate of measurement, and achieve the effect of dynamic scanning measurement and small size
Inactive Publication Date: 2010-08-11
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
High voltage plays an irreplaceable important role in the development of new materials and the study of basic physical properties of materials. People have used the method of directly installing electrodes to measure electrical properties. Because the wires are easily broken and difficult to make under high voltage conditions, using such The method measurement is extremely inconvenient and the success rate is extremely low
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
[0013] The features of the present invention and other related features are further described in detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:
[0014] As shown in Figure 1, the magnetic sensor 14 is composed of two sets of secondary windings 2 and 3 and a set of primary windings 4, and all winding parameters of the secondary windings 2 and 3 are consistent, including size, number of turns, winding direction etc.
[0015] The secondary windings 2 and 3 are connected in series by winding ends with the same name, the excitation signal can be input from 5, and 6 can be used as a signal output. In the absence of sample 1, pass an alternating current signal of a specific frequency on the excitation coil, use a lock-in amplifier to measure the induced potential of this frequency, and slightly adjust the number of turns of one of the secondary windings to adjust the signal output ...
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
Login to View More Abstract
The invention discloses an oscillating type AC magnetic signal detecting system for high voltage experiment, comprising two phase-locking amplifiers, two signal generators, magnetic sensor, temperature sensor, data collecting system. The magnetic sensor is composed of two second windings and one primary winding connected with vibrating plate, wherein the second windings and primary winding are concentrically disposed. Therefore a device for detecting AC magnetism at high pressure without contacting with the sample is formed. The size of magnetic sensor is very small and the magnetic sensor can be mounted in very narrow space of high pressure device, at the same time the detecting system uses two stage of phase-lock amplifying, thus the sample magnetic signal with very small size can be measured, so as to solve the problem of non-contact measurement technique of material under high pressure.
Description
technical field [0001] The invention relates to the measurement of physical properties of magnetic materials under high-voltage conditions, especially the measurement of AC magnetic properties. A sample-free contact measurement device that realizes AC physical properties of magnetic materials under high-voltage conditions. Background technique [0002] Pressure is a basic physical parameter independent of temperature and composition. It can effectively shorten the interatomic distance of a substance, increase the overlap of adjacent electron orbits, and then change the crystal structure, electronic structure and interaction between atoms (molecules) of a substance. With the successful combination of ultra-high pressure technology represented by diamond anvil (DAC) and a variety of physical, chemical, and material methods, the research on ultra-high pressure physics and materials has shown a momentum of rapid development. It can generate more than 1 million pressure. Since ...
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 Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/12
Inventor 余勇杨留响靳常青
Owner INST OF PHYSICS - CHINESE ACAD OF SCI