Distributed optical fiber temperature measurement system and its high-speed data acquisition and processing

The distributed optical fiber temperature measurement system is a kind of sensor system,which is applied to the real-time measurement of the temperature field in space.A distributed optical fiber temperature measurement system is presented,with a digital signal processor(DSP) as the core and a circuit composed by parallel high-speed pipeline A/D converter,first-in first-out memory(FIFO),complex programmable logic device(CPLD).The conversion rate of data acquisition is up to 10×10~7SPS,with the distance resolution up to 1 m and the temperature resolution up to 1 ℃.The data of temperature can be obtained by demodulating directly in system.