基于TDLAS技术的空间网格化甲烷检测方法

Space grid methane detection method based on TDLAS technology

针对传统甲烷检测方法响应速度慢、无法定位泄漏源的弊端,设计了一种基于可调谐激光二极管吸收光谱技术的空间立体甲烷检测方法。通过对开放性空间分层精细化划分,布置TDLAS传感器,不仅实现了对空间内甲烷气体实时、准确的探测与定位,而且大大减少了传感器的使用数量。根据不同的应用环境,空间检测方法提供两种检测模式:空间网格定位检测与扫描检测。网格检测适用于复杂的生产装置内部的检测;扫描检测适用相对更少的传感器,适用于视线开阔的边界区域检测。当泄漏发生时该检测方法可及时发现泄漏点,对于保护生产生活安全具有十分重要的意义。

Because the low response speed of traditional methane detection fails to locate leakage source, we design a kind of spatial methane detection method based on tunable diode laser absorption spectroscopy technology. Through dividing the open space finely and laying TDLAS sensor, we realize the detection and location of methane gas in the space timely and accurately while greatly reducing the number of sensors. According to different application environment, space detection method provides two detection modes- spatial grid location detection and scanning detection. Spatial grid detection is suitable for detecting the complex grid environment. Scanning detection using fewer sensors is suitable for the boundary region detection. Once the methane leaks, the source of the leak can be found in time by applying the method. It is great significance for protecting the safety of production and life.