分布式光纤测温系统中解调方法的优化

摘要

随着分布式光纤传感技术的不断发展,对测温系统的性能要求不再仅仅是追求更远的测量距离,其稳定性和测量精度也成为很重要的评价标准.从提高精确度和稳定性的角度出发,提出对升、降温数据线性拟合的方式求解探测单元的温度,使用回路解调方式对整条温度曲线优化处理,并论述其可行性和实用性.%With development of distributed optical fiber sensing technology, both stability and accuracy become important to evaluating temperature measurement system besides the measurement distance. Starting from improving system' s accuracy and stability, the data linear fitting way for up/down temperature was proposed to solve detector unit' s temperature and to optimize the whole temperature curve by the way of loop demodulation; meanwhile,this method's feasibility and practicality were discussed.