公开(公告)号：US20220137087A1

公开(公告)日：2022-05-05

申请号：US17401878

申请日：2021-08-13

Applicant: Anhui University

Inventor： Benli Yu ,  Gang Zhang ,  Xuqiang Wu ,  Shili Li ,  Cheng Zuo

IPC: G01P15/093 ,  G01V1/22

Abstract: An optical-fiber-acceleration-sensor probe is provided, which includes a probe shell having a threaded hole at a bottom thereof and an optical-fiber entry and exit hole on a side thereof; a double-end stud in the probe shell, an end of the double-end stud being connected to the threaded hole; a high damping elastomer sleeved on the double-end stud; a mass block sleeved on the double-end stud and located on the high damping elastomer; an optical fiber interferometer located in the mass block and including a sensing arm and a reference arm, where the sensing arm is wound around the high damping elastomer, and the reference arm is wound around the mass block; high damping vibration absorbers on the mass block; and a nut located at another end of the double-end stud, and on the high damping vibration absorbers, where a washer is between the nut and the high damping vibration absorbers.

公开(公告)号：US11460346B2

公开(公告)日：2022-10-04

申请号：US17410012

申请日：2021-08-24

Applicant: Anhui University

Inventor： Xuqiang Wu ,  Benli Yu ,  Jinhui Shi ,  Shenglai Zhen ,  Dong Guang

IPC: G01J9/02 ,  G02F1/21

Abstract: The present disclosure provides a phase sensitivity calibration method based on a phase generated carrier (PGC) technology, which is characterized in that in the operation process of a PGC algorithm, an additional calibration signal with a phase of known magnitude is applied through a phase modulator. This signal is demodulated through an arctangent algorithm or a differential cross multiplication algorithm, and a demodulated output value corresponding to a unit phase in the algorithm is obtained. The phase of known magnitude can be obtained by converting a carrier modulation depth parameter according to a certain ratio.

公开(公告)号：US11782071B2

公开(公告)日：2023-10-10

申请号：US17401878

申请日：2021-08-13

Applicant: Anhui University

Inventor： Benli Yu ,  Gang Zhang ,  Xuqiang Wu ,  Shili Li ,  Cheng Zuo

IPC: G01P15/093 ,  G01V1/22

CPC classification number: G01P15/093 ,  G01V1/226

Abstract: An optical-fiber-acceleration-sensor probe is provided, which includes a probe shell having a threaded hole at a bottom thereof and an optical-fiber entry and exit hole on a side thereof; a double-end stud in the probe shell, an end of the double-end stud being connected to the threaded hole; a high damping elastomer sleeved on the double-end stud; a mass block sleeved on the double-end stud and located on the high damping elastomer; an optical fiber interferometer located in the mass block and including a sensing arm and a reference arm, where the sensing arm is wound around the high damping elastomer, and the reference arm is wound around the mass block; high damping vibration absorbers on the mass block; and a nut located at another end of the double-end stud, and on the high damping vibration absorbers, where a washer is between the nut and the high damping vibration absorbers.