设计了一种基于微镜阵与非色散红外瓦斯气体传感原理的长光程微型红外瓦斯气体浓度传感结构,该结构在有限面积内形成可靠光路,并可通过光纤网络连接和复用技术形成准分布式检测网络。该传感器不受外界电磁干扰,不会产生传感头催化剂中毒现象,具有较高的可靠性和稳定性等优点,适合井下长期监测和应急救援极端环境使用。 A long optical path micro-IR gas concentration sensing structure based on the principle of micromirror and non-dispersive infrared gas sensing is designed. The structure forms a reliable optical path in a limited area and can be connected and multiplexed through a fiber optic network Formation of quasi-distributed detection network. The sensor is not affected by external electromagnetic interference, does not produce sensor head poisoning phenomenon, with high reliability and stability, etc., suitable for long-term underground monitoring and emergency rescue extreme environment.