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:
Aug. 18, 2020
Filed:
May. 17, 2019
LI Sun, Shandong, CN;
Chunwei Zhang, Shandong, CN;
Li Sun, Shandong, CN;
Chunwei Zhang, Shandong, CN;
Ziqiang Xu, Liaoning, CN;
Chuang Li, Liaoning, CN;
Other;
Abstract
A high-precision fiber Bragg grating dislocation sensor, including a fiber Bragg grating, a loose tube, a tension spring, a sliding rod, a positioning piece, a sheath, a stainless steel tube, a transmission rod and a fastener. The sliding rod, the tension spring, the positioning piece, the fiber Bragg grating and the sheath are connected in series, and are provided in the precision stainless steel tube successively. The mechanism of the dislocation sensor is that an elastic force, converted from the local uneven settlement of the settlement joint, is applied on the bare fiber Bragg grating, so that the bare fiber Bragg grating suffers an axial stress and a strain is generated by itself, and the central wavelength of the fiber Bragg grating is further changed, allowing for the monitoring of settlement.