手持LED光源频闪检测仪的设计与实现  

Design and Implementation of Hand-held LED Light Stroboscopic Detector

作　　者：孙石震 张国玉[1] 施安存[2] 孙悦[2] 段靖远[2] 盖轶冰 SUN Shizhen ZHANG Guoyu SHI Ancun SUN Yue DUAN Jin gyuan GAI Yibinga(College of Photoelectric Engineering , Changchun University of Science and Lab, Institute of Semiconductors , Chinese Academy of Science, Beijing 100083, CHNI Photoelectric System Technology, Changchun 130028, CHN Beijing Institute of Microtechnology, Beijing 100006, CHN)

机构地区：[1]长春理工大学光电工程学院,长春130028 [2]中国科学院半导体研究所光电系统实验室,北京100083 [3]北京市微技术研究所,北京100006

出　　处：《光电子技术》2016年第4期242-247,共6页Optoelectronic Technology

基　　金：中国国家重点基础研究计划(973计划)(2013CB329204);中国自然科学基金资助(61375083)

摘　　要：采用S3C2440嵌入式微处理器,设计了一种由光电探测模块、信号调理模块、高速AD转换模块和时频谱分析波形显示模块组成的具有LED光源频闪检测功能的手持LED光源频闪检测仪。采用LabView开发了基于WINCE操作系统的时频谱分析模块,实现了波形数据分析与保存等功能,同时建立了系统的频闪参数模型,通过对频闪百分比和频闪指数等参数的计算来表征光源频闪波形的特征,并分析引起光源频闪的因素。实验结果表明,所设计的手持LED光源频闪检测仪检测范围可达到50Hz^20 MHz,检测精度为一级(±3%)。完全满足检测LED光源频闪的需要。A LED light blinking detection designer was completed with the function of stroboscopic detector.It consisted of the photoelectric detection module,the signal conditioning module,the high-speed AD conversion module and the time-frequency spectrum analysis of waveform display module.In order to achieve the function waveform data analysis and preservation,etc.,the LabView was employed to develop the time-frequency spectrum analysis module based on the WINCE operating system.The stroboscopic parameter model was established simultaneously,through the calculation of percentage of stroboscopic and stroboscopic index parameters to characterize the light stroboscopic waveform and analysis the causes of the light blinking.The experimental result shows that the detection range of the portable LED light stroboscopic detector can be up to 50Hz～20MHz,precision for level 1（plus or minus 3%）,which could fully meet the needs of stroboscopic light speed detection.

关 键 词：发光二极管 频闪 视力 检测仪 时频谱分析 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]