Sensor system for measuring deformations in structures or machines has demodulator that converts optical signal into analog or digital to be analyzed by data acquisition system e.g. personal computer (PC)

摘要

A sensor comprised of a fiber Bragg material is applied to a structure. A beam of light generated by a radiant body travels through an optical coupler and an optical fiber such that disturbances on the fiber Bragg material generate a phantom proportional to the deformation of the beam due to a load applied to the specific point on the structure. The phantom is reflected through another optical filter and a Bragg filter to a demodulator that also receives a reference signal. The demodulator converts the optical signal to analog or digital for analysis in a data acquisition system e.g. PC.