Structural design and analysis on sensing properties of mining FBG tilt angle sensor
Differential compensation method is used to eliminate the influence of temperature on the wavelength drift of fiber Bragg grating(FBG)based on the lever-pendulum structure and mechanical analysis method,and a mathematical model for wavelength and tilt angle sensing is established,which is used to analyze the sensing characteristics of mining FBG tilt angle sensors.Through static experimental analysis and summary of calibration on the mining FBG inclination sensor platform with copper matrix material mounted FBG surface,it is found that the precision of the FBG sensor is 1.526％,the sensitivity is 952.95pm/(°),the repeatability is 1.2687％,and the hysteresis is 0.2998％,the results show that the FBG inclination sensing property has good consistency with the actual inclination measurement results,providing a theoretical and technical support for the application of mining FBG inclination sensors.
万方数据
