东南大学学报（英文版）2016，Vol.32Issue(4)：415-419,5.DOI:10.3969/j.issn.1003-7985.2016.04.004
LED灯具在线测试和数据处理的新方法
New method of online testing and data processing for LED lamps
摘要
Abstract
In order to achieve quick and accurate lifetime prediction of LED lighting products under the testing time of 2 000 h, a method of online testing of luminous flux is proposed under the condition of temperature stress. Exponential fitting of lumen maintenance, the Bayesian estimation of failure probability, the Weibull distribution of lifetime and the Arrhenius model of the decay rate are used in combination to acquire the distribution of failure probability over time at the ambient temperatures of 25 ℃. The lifetime test of the same lamps based on the Energy Star standard under the testing time of 6 000 h is also implemented to verify the effectiveness of the method. The errors of lifetimes acquired with the proposed method are 7%, 4%, 3% and 1% at the failure probabilities of 62. 3%, 10%, 5% and 1%, respectively.关键词
在线测试/加速测试/贝叶斯估计/可靠性分析Key words
online testing/accelerated test/Bayesian estimation/reliability analysis分类
数理科学引用本文复制引用
郝剑,荆雷,客洪亮,王尧,高群,王潇洵,孙强,续志军..LED灯具在线测试和数据处理的新方法[J].东南大学学报（英文版）,2016,32(4):415-419,5.基金项目
The Cui Can Project of Chinese Academy of Sciences ( No. KZCC-EW-102), the National High Technology Research and De-velopment Program of China (863 Program )( No.2015AA03A101,2013AA03A116) （ No. KZCC-EW-102）
