宽波段气体泄漏红外成像检测系统设计  

Design of wide-band gas leak infrared imaging detection system

作　　者：李家琨[1] 顿雄 金明磊[1] 金伟其[1] 王霞[1] 夏润秋[1] 

机构地区：[1]北京理工大学光电学院光电成像技术与系统教育部重点实验室,北京100081

出　　处：《红外与激光工程》2014年第6期1966-1971,共6页Infrared and Laser Engineering

基　　金：北京市自然科学基金重点项目(4121002)

摘　　要：有毒有害气体的泄漏不仅污染环境,而且威胁人民生命财产安全,世界各国都非常重视快速有效的气体泄漏检测技术的研究和仪器开发。针对这一问题,提出了宽波段气体泄漏红外成像检测系统设计方案,主要包括宽波段红外光学镜头、子波段滤光片及切换装置、宽波段非制冷焦平面探测器、视频处理及系统控制电路等组成部分,充分利用非制冷探测器的无光谱选择特性,结合热图像非均匀性校正和数字细节增强处理算法,实现了对不同种类气体泄漏的高灵敏度检测,提供了适合人眼判断的气体泄漏视频图像显示结果。整个系统具有可检测气体种类多、检测范围大速度快、气体泄漏痕迹明显增强、系统便携性突出、成本相对较低等特点。The leakage of toxic or hazardous gases not only pollutes the environment, but also threatens people＇s lives and property safety. Many countries attach great importance to the rapid and effective gas leak detection technology and instrument development. To address this issue, a wide-band gas leak IR imaging detection system design was proposed, mainly including wide-band IR optical lens, the sub-band filters and switching device, wide-band Uncooled Focal Plane Array （UFPA） detector, video processing and system control circuit, which takes full advantage of the spectrally non-selective characteristic of the uncooled focal plane array detector. The system can sensitively detect and visualize a considerable number of different kinds of gases, which are not visible to the naked eyes, by using the IR image non- uniformity correction technology and Digital Detail Enhancement （DDE） technology. The resulting gas leak video easy to be observed for the human eye was provided. Many advantages are commendable, such as scanning a wide range simultaneously, locating the leaking source quickly, visualizing the gas plume intuitively, and so on.

关 键 词：气体泄漏检测 红外成像 非制冷焦平面探测器 数字细节增强 

分 类 号：TN216[电子电信—物理电子学]