Photonic Sensors, 2015, 5 (4): 351, Published Online: Jan. 6, 2016
Self-Compensating Displacement Sensor Based on Hydramatic Structured Transducer and Fiber Bragg Grating
Hydraumatic structured transducer Hydraumatic structured transducer large measuring range large measuring range temperature compensating temperature compensating optical fiber sensor optical fiber sensor displacement displacement
Abstract
An optical fiber displacement sensor with a large measuring range for simultaneous displacement and temperature measurement is presented in this paper. We developed a specific transducer based on the piston and hydraumatic structure to realize a large displacement measurement, which combined the large measuring range and high precision into a single sensor system. The spectrum showed two reflection peaks used to compensate for cross-sensitivity in the displacement detection. This displacement sensor can linearly work in a large measuring displacement range greater than 45 mm with a high sensitivity of 0.036 nm/mm. The sensor we reported can be developed for real-time displacement monitoring in many industrial environments such as the mechanical shape or liquid level monitoring.
Shimeng CHEN, Yun LIU, Xiuxin LIU, Yang ZHANG, Wei PENG. Self-Compensating Displacement Sensor Based on Hydramatic Structured Transducer and Fiber Bragg Grating[J]. Photonic Sensors, 2015, 5(4): 351.