Title:
MAGNETIC MOMENT CORRECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/128520
Kind Code:
A1
Abstract:
A magnetic moment correction method, comprising the following steps: S1, preparing magnetic particles without magnetic moment anisotropy; S2, uniformly dispersing the magnetic particles in a non-magnetic medium to prepare a correction sample mixture; S3, obtaining a magnetic moment value of unit weight of the correction sample mixture by means of measurement and calculation; S4, preparing a correction sample from the correction sample mixture, measuring the weight of the correction sample, and calculating a magnetic moment value of the correction sample; S5, correcting, by using the correction sample, a signal measured by a magnetic measurement device; and S6, measuring a signal value of an actual sample to be measured, and converting the signal value into a magnetic moment value of said actual sample by means of a correction result. According to the method, the magnetic particles without magnetic moment anisotropy are utilized and are mixed and sized with a sizing auxiliary material to prepare the correction sample having a same or similar shape and size as said actual sample, and the correction sample is utilized to correct the magnetic measurement device so that correction errors caused by different shapes, sizes and positions of said actual sample and the correction sample are avoided.
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Inventors:
WEI RONGHAN (CN)
XU YANYA (CN)
XU YANYA (CN)
Application Number:
PCT/CN2020/072951
Publication Date:
July 01, 2021
Filing Date:
January 19, 2020
Export Citation:
Assignee:
UNIV ZHENGZHOU (CN)
International Classes:
G01R35/00; G01R33/02; G01R33/12
Foreign References:
| CN109407023A | 2019-03-01 | |||
| CN109143126A | 2019-01-04 | |||
| CN104296776A | 2015-01-21 | |||
| CN107045111A | 2017-08-15 | |||
| CN104049224A | 2014-09-17 | |||
| CN108445434A | 2018-08-24 |
Other References:
YU HONGYUN: "Study on Magnetic Measurement Error of SQUID-VSM", EXPERIMENTAL TECHNOLOGY AND MANAGEMENT, XX, CN, vol. 32, no. 1, 1 January 2015 (2015-01-01), CN, pages 61 - 64, XP055827160, ISSN: 1002-4956, DOI: 10.16791/j.cnki.sjg.2015.01.019
LIU XINGMIN, LI RONG: "Fundamentals of Magnetic Measurements", ELECTRICAL MEASUREMENT & INSTRUMENTATION, no. 12, 1 December 1973 (1973-12-01), pages 1 - 3, XP055827158
LIU XINGMIN, LI RONG: "Fundamentals of Magnetic Measurements", ELECTRICAL MEASUREMENT & INSTRUMENTATION, no. 12, 1 December 1973 (1973-12-01), pages 1 - 3, XP055827158
Attorney, Agent or Firm:
FUZHOU YUANCHUANG PATENT AND TRADEMARK AGENT LTD. (CN)
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