Modeling and Simulation Research of the Self-gain Optical Fiber Differential Pressure Sensor Based on Damping Piston

Abstract

This paper takes a modeling and simulation study on the self-gain optical fiber differential pressure sensor based on damping piston. Firstly, proposes the structure of mechanical packaging sensor probe based on the damping piston, and designs the sensor system; then, carries out the theoretical research on the sensor and builds the intensity modulation function and sensing model of the sensor. Simulation experiments based on the theoretical model are also conducted. The experimental results show that: changing the stiffness of the damping spring can change the detection range of the sensor. In certain stiffness of the damping spring, a sensor’s detected differential pressure DP is in good linearity with the sensor output value H, and the sensor has high sensitivity, whose output value can get self gain. The research shows that the optical fiber differential pressure sensor is of good detection performance and can meet the needs of different detection occasions.