Development of a long-term monitoring system based on fiber optic sensors in concrete structures

摘要

A structural health monitoring system is used to detect the location of crack damage on structure and structural elements. The optic sensor system comprises a receiver to receive the lights from sensors being placed at different locations and each sensor includesa sensing fiber. Each sensor generates an output light signal with a specified wavelength.The property of the sensing fiber of the output light signal varies when stress is included in the sensing. This detection system includes a memory to store the information related to mapping between the wavelength of the output light signals and the regions where the optic sensors are placed.