Title:
CALIBRATION METHOD AND DEVICE FOR OPTICAL FIBER STRAIN SENSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/259591
Kind Code:
A1
Abstract:
Provided are a calibration method and a calibration device for an optical fiber strain sensing system. The method comprises: suspending a weight platform on a stainless steel frame by means of a sensing optical fiber, and adjusting the height of a vibration table (S1); placing an electronic detector on the vibration table (S2); setting the vibration amplitude and frequency of the vibration table (S3); obtaining a first displacement of the vibration table according to the vibration amplitude and frequency, and measuring the speed of the vibration table by means of the electronic detector (S4); converting the speed of the vibration table into a second displacement of the vibration table (S5); and calculating the goodness of fit of the vibration table, so as to complete calibration for the optical fiber strain sensing system (S6). The motion of the vibration table is simultaneously measured by the sensing optical fiber and the electronic detector, and motion information measured by the sensing optical fiber and the electronic detector is fitted such that the deformation quantity of the sensing optical fiber can match the vibration amplitude of the vibration table, thereby improving the accuracy of the optical fiber strain sensing system and ensuring the rationality and feasibility of the calibration method.
Inventors:
RAN ZENGLING (CN)
CHENG JIANKAI (CN)
RAO YUNJIANG (CN)
CHENG JIANKAI (CN)
RAO YUNJIANG (CN)
Application Number:
PCT/CN2020/098135
Publication Date:
December 30, 2020
Filing Date:
June 24, 2020
Export Citation:
Assignee:
UNIV ELECTRONIC SCI & TECH CHINA (CN)
International Classes:
G01H9/00; G01H11/06
Foreign References:
| CN110160629A | 2019-08-23 | |||
| CN106124803A | 2016-11-16 | |||
| CN109579722A | 2019-04-05 | |||
| CN203053560U | 2013-07-10 | |||
| CN207318047U | 2018-05-04 | |||
| CN109211302A | 2019-01-15 | |||
| CN102927912A | 2013-02-13 | |||
| CN105547457A | 2016-05-04 | |||
| US20160202131A1 | 2016-07-14 |
Attorney, Agent or Firm:
CHENGDU ZHENGHUA PATENT AGENCY (CN)
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