电测与仪表2012，Vol.49Issue(12)：64-68,5.
脉冲电流测量LED结温的方法及不确定度分析
The Method of Pulse Current Measuring LED Junction Temperate and the Uncertainty Analysis
范宜锋 1来磊 1刘薇 1潘洋 1石雷兵 1韩志强1
作者信息
- 1. 上海市计量测试技术研究院,上海201203
- 折叠
摘要
Abstract
The pulse current method is a new kind of method in measuring LED junction temperature which is based on the forward-voltage principle. This paper gives an introduction on the principle of the pulse current method. The testing system which is built according to the pulse current method and also the uncertainty evaluation of the temperature -voltage coefficient and the LED junction temperature are illustrated. The results show that the most important influence quantity in the component of the LED junction temperature and temperature-voltage coefficient uncertainty arise from measuring repeatability of the LED forward voltage. This demonstrates that, improving the measurement accuracy of the LED junction temperature depends not just on the accuracy of the measuring instruments, but also on the manufacturing materials of the LED worth further studying in order to minimize the measurement influence from LED itself.关键词
脉冲电流法/LED结温/线性拟合/不确定度分析Key words
pulse current method/the LED junction temperature/linear fit/ uncertainty analysis分类
信息技术与安全科学引用本文复制引用
范宜锋,来磊,刘薇,潘洋,石雷兵,韩志强..脉冲电流测量LED结温的方法及不确定度分析[J].电测与仪表,2012,49(12):64-68,5.
