| 1. | Now , the reported fgs can measure many physical parameters including temperature , strain , stress , displacement , pressure , torsional angle , twist moment ( moment of torque ) , accelerated velocity , current , voltage , magnetic field , frequency , density , coefficient of thermal expansion , trembling etc . some of the fiber grating sensing systems have been put into practical use 目前,已报道的光纤光栅传感器可以检测的物理量有:温度、应变、压力、位移、压强、扭角、扭矩(扭应力) 、加速度、电流、电压、磁场、频率、浓度、热膨胀系数、振动等,其中一部分光纤光栅传感系统已经实际应用。 |