高灵敏度气溶胶粒子谱仪研究  

Study on high sensitivity aerosol particle spectrometer

作　　者：顾肖峰 钟荣柯 马星宇 罗浚文 徐国庆 伍波[1,2] GU Xiaofeng;ZHONG Rongke;MA Xinyu;LUO Junwen;XU Guoqing;WU Bo(College of Optoelectronic Engineering,Chengdu University of Information Technology,Chengdu 610225,China;The Joint Research Centre for Weather Modification of China Meteorological Administration and Chengdu University of Information Technology,Chengdu 610225,China)

机构地区：[1]成都信息工程大学光电工程学院,成都610225 [2]中国气象局-成都信息工程大学人工影响天气联合研究中心,成都610225

出　　处：《激光技术》2025年第2期258-262,共5页Laser Technology

摘　　要：为了提升气溶胶粒子谱仪的探测灵敏度,采用了两个光电探测器分别探测小粒子散射的侧向散射光和大粒子散射的前向散射光的方法,设计并研制了基于光散射的小型化高灵敏度气溶胶粒子谱仪;采用聚苯乙烯标准微球测试了粒子谱仪的信号响应,并与国外同类型产品进行了24 h对比观测。结果表明,测试期间两者数浓度相关性好、变化趋势一致,研制的气溶胶粒子谱仪最小分辨粒径间隔为20 nm,且体积小、重量轻。该研究为小型无人机气溶胶探测提供了重要参考。In order to enhance the detection sensitivity of aerosol particle spectrometers,a method that two photodetectors were used to separately detect the side-scattered light of small particles and the forward-scattered light of large particles was employed.A miniaturized high-sensitivity aerosol particle spectrometer based on light scattering was designed and developed.Polystyrene standard microspheres were used to test the signal response of the particle spectrometer.Comparative observations were conducted with similar foreign products for 24 h,showing good concentration correlation and consistent trend between the two instruments during the test period.The results indicate that,the developed aerosol particle spectrometer has a minimum resolution particle size interval of 20 nm,and it is characterized by small size and light weight.This study provides important reference for aerosol detection using small unmanned aerial vehicles.

关 键 词：激光技术 气溶胶粒子 无人机 光学粒子计数器 

分 类 号：TN249[电子电信—物理电子学] X851[环境科学与工程—环境工程]