摘要
为提高激光甲烷遥测仪的稳定性,在探头的设计细节上进行了优化。通过透镜边沿平面化设计,实现了发射-接收孔径的共用,从而减少了光路体积;同时,将光电探测器感光面积优化至03mm,显著降低了背景噪声,最终提升了系统信噪比。验证了改进后的探头在白纸为反射面的情况下达到测试距离100m、测试灵敏度为10ppm·m、精确度达到±10,满足了远距离检测天然气管道泄漏的要求。
To enhance the stability of the laser methane telemetry,optimizations are implemented in the probe design details.Through the planar design of the lens edge,the sharing of transmitting and receiving apertures is realized,thereby reducing the volume of the optical path.Additionally,the detector photosensitive area is optimized to 0.3mm,which significantly reduces the background noise and ultimately improves the signal to noise ratio of the system.It is verified that the improved probe can achieve a test distance of 100 m,a test sensitivity of 10 ppm·m,and an accuracy of±10%when the white paper is the reflective surface,which meets the requirements of long distance detection of natural gas pipeline leakage.
作者
郭学范
刘闯
王劲松
刘涛
GUO Xue-fan;LIU Chuang;WANG Jin-song;LIU Tao(College of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130012,China;Zhongshan Institute of Changchun University of Science and Technology,Zhongshan 528437,China)
出处
《激光与红外》
北大核心
2025年第10期1609-1616,共8页
Laser & Infrared
基金
吉林省教育厅基金项目(No.JJKH20230808KJ)资助。
关键词
激光甲烷遥测仪
遥测技术
光谱吸收
气体检测
laser methane remote detector
telemetry technology
spectral absorption
gas detection
