分布式光纤测温系统及高速数据采集与处理

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

分布式光纤测温系统是一种用于实时测量空间温度场分布的传感器系统。介绍了一种以数字信号处理器(DSP)为核心,以并行高速流水线式A/D转换器、先入先出队列芯片(FIFO)、可编程逻辑器件(CPLD)为主体的分布式光纤测温系统。其数据采集速率每秒可达10×107次,空间分辨力达1m,温度分辨力为1℃,并能直接在主机中解调出温度数据。

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 1m and the temperature resolution up to 1℃. The data of temperature can be obtained by demodulating directly in system.