透射式光纤甲烷气体监测系统的研究

Study on Transmission Type Optical Fiber Monitoring System of Methane

基于甲烷气体的光谱吸收特性,采用一种带有参考通道的光纤甲烷气体在线实时监测系统。为了消除随机因素的影响,在设计过程中采用了双光路结构解决系统不稳定问题,提高测量准确度。给出了该光纤甲烷气体测量系统的实验结果。

Based on the characteristic of spectrum absorption of methane, a set of optical fiber monitoring system of methane gas is presented, which has reference channel and is for on line and real time detection. In order to eliminate the effect of other factors on measurement precision, the double light paths are used in this system to eliminate the problem of instability. The measurement precision is greatly enhanced. The final measurement results of methane concentration are shown.