非色散性智能红外瓦斯传感器的研究  

Study on non-dispersive smart infrared methane sensor

作　　者：毛晓波[1] 陈铁军[1] 罗勇[1] 

机构地区：[1]郑州大学电气工程学院,河南郑州450001

出　　处：《电子技术应用》2008年第1期68-71,74,共5页Application of Electronic Technique

基　　金：河南省杰出人才创新基金资助(521000100)

摘　　要：提出一种基于非色散性红外检测技术的非毒化红外瓦斯传感器。它利用瓦斯气体对某一特定波长红外光吸收性能与瓦斯浓度之间存在的确定关系,通过测定特定波长红外光被吸收的程度反映瓦斯浓度值的原理进行工作。详细介绍了红外吸收气体检测原理、脉动光源与热电探测器信号的关系,给出了瓦斯浓度的实用测量算法及传感器系统的软硬件设计方案。具有标定周期长、测量精度高、不受其他气体影响和不会产生催化中毒等特点。A non-poisoning infrared methane sensor based on non-dispersive infrared detection principle is presented. This technique relies on the target gas having a unique,well-defined absorption signature within the infrared region of the electromagnetic spectrum, It is used to detect the presence and concentration of methane gas, The infrared gas detection principle, relationship of pulsed lamp-house and pyroelectric detectors signals are introduced in detail. A practical algorithm of gas concentration, hardware and software design schemes of methane sensor are given. The sensor benefits from long calibration periods, high precision, non-poisoning and is unacted on its environment.

关 键 词：红外 气体传感器 瓦斯浓度 热电探测器 光学辐射 

分 类 号：TD712.55[矿业工程—矿井通风与安全] TU857[建筑科学]