| 大功率LED温度特性测量仪 |
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| 引用本文： | 陈国杰,周有平,张潞英,李斌,钟土基.大功率LED温度特性测量仪[J].大学物理,2012,31(2):33-36. |
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| 作者姓名： | 陈国杰 周有平 张潞英 李斌 钟土基 |
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| 作者单位： | 佛山科学技术学院理学院,广东佛山,528000 |
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| 基金项目： | "大学物理实验"广东省精品课程、广东省高等教育教学改革项目，广东省物理实验教学示范中心资助 |
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| 摘 要： | 用半导体加热/致冷芯片对LED恒温,用贴片式pt100作温度传感器,用具有人眼视觉特性的可见光亮度传感器组成光强探测器,研制了一种大功率LED温度特性测量仪.用该测量仪测量了1W白光LED在恒流和恒压驱动下光强、发光效率等参数的温度特性.实验表明,该测量仪恒温快,测量准确,成本低,操作便捷.
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| 关 键 词： | 大功率LED 光强 温度特性 测量仪 |
Instrument for measuring temperature characteristic of high power LED |
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| CHEN Guo-jie
,
ZHOU You-ping
,
Zhang Lu-ying
,
LI Bin
,
ZHONG Tu-ji.Instrument for measuring temperature characteristic of high power LED[J].College Physics,2012,31(2):33-36. |
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| Authors: | CHEN Guo-jie ZHOU You-ping Zhang Lu-ying LI Bin ZHONG Tu-ji |
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| Institution: | (School of Science,Foshan University,Foshan,Guan gdong 528000,China) |
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| Abstract: | An instrument for measuring t he temperature characteristic of a high power LED is developed b y using a semiconductor heating/cooling element to make the LED ’ s temperature rise or fall,in which a pt100 surface mounted re sistor is used as a temperature sensor,and a light sensor with spectral respon se that emulates the human eye is used as a luminous intensity detector.The te m perature characteristics of the photoelectric parameters,such as luminous inte nsity,luminous efficiency,of the l watt white LED supplied b y a constant current source or a constant voltage source are investigated,resp ectively.The experimental results show that this instrument has advantages of fast temperature measurement,high accuracy,low cost and simple operation. |
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| Keywords: | high power LED luminous intensity temperature characteristics measurement instrument |
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