Optical fiber pressure sensor dynamic calibration device and method based on strain drop hammer

• Main Authors: ZHAN HUI, JIANG XU, GUAN ZHUOWEI, BI CHUNMING, LYU GUOHUI
• Format: Patent
• Language: Chinese; English
• Published: 11.12.2020
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The invention discloses an optical fiber pressure sensor dynamic calibration device and method based on a strain drop hammer, belongs to the field of sensors, and aims at solving the problem that a traditional comparison type pressure calibration device cannot meet the dynamic calibration requirement of an optical fiber pressure sensor. The device comprises a strain drop hammer, a hydraulic piston, a hydraulic oil cylinder and a signal acquisition and processing unit. The inner cavity of the hydraulic oil cylinder is filled with a pressure transmission medium, and the hydraulic piston is installed on the upper portion of the inner cavity of the hydraulic oil cylinder. A to-be-calibrated optical fiber pressure sensor is installed on the side wall of the hydraulic oil cylinder, and a probe of the to-be-calibrated optical fiber pressure sensor extends into the pressure transmission medium. The strain drop hammer freely falls to impact the hydraulic piston, the hydraulic piston is impactedto move downwards togeth