The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2022
Filed:
Jul. 07, 2020
China University of Mining and Technology, Xuzhou, CN;
Shaoyi Xu, Xuzhou, CN;
Zhencai Zhu, Xuzhou, CN;
Wei Li, Xuzhou, CN;
Fangfang Xing, Xuzhou, CN;
Yuqiao Wang, Xuzhou, CN;
Hongyu Xue, Xuzhou, CN;
Qiang Peng, Xuzhou, CN;
Guang Chen, Xuzhou, CN;
Feng Dong, Xuzhou, CN;
CHINA UNIVERSITY OF MINING AND TECHNOLOGY, Xuzhou, CN;
Abstract
A device and method for detecting an angle of a shearer rocker arm based on optical fiber sensing. The device includes an optical system and a mechanical system. The optical system includes a broadband light source, a polarizer, collimating lenses, a gradient-rotation media plate, a polarization beam splitter, and a data processing module. The mechanical system includes a connecting base, connecting rods, a slider, a bracket, and a sensor housing. When the shearer operates, the rocker arm converts rotation angle information to linear displacement related to a gradient refractive index by using a connecting rod mechanism, and a position on the gradient-rotation media plate through which linearly polarized light produced by the optical system passes also changes. Due to an optical rotation effect, corresponding rotation angles of a plane of polarization that are formed after the light passing through the gradient-rotation media plate also vary.