基于LabVIEW的VLC-LED模组结温非接触式测量系统设计
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摘要
可见光通信中LED模组结温影响其光、色、电特性及工作寿命,对模组结温的测量及管理十分重要。因LED模组管脚存在无法接触测量的缺点,LED结温非接触式测量方法广受关注。在研究双光谱参数测量LED结温的基础上,开发了VC-LED模组结温的非接触式测量系统。该系统主要由恒流源控制、光谱数据采集和数据分析处理3个模块组成。经实验验证,双光谱参数法与中心波长法相比,两者结果偏差在3℃以内。采用该系统测量LED模组结温,不但直观、准确,且不需要接触LED管脚,实现了LED模组结温的非接触测量。
In visible light communication,the junction temperature of LED module affects its color and electrical characteristics and lifetime,which is very important for measuring and managing the junction temperature of modules.Because of the failure to contact the LED module pins,the non-contact measurement method has attracted people′s attention.Based on the non-contact LED Array junction temperature testing method,a non-contact detection system for VLC-LED module junction temperature is developed.The system consists of three modules,i.e.,control of current source,spectral data acquisition and data analysis and processing.Experimental results show that the deviation between the two spectral parameters method and the central wavelength method is less than 3 degrees.Therefore,using this system to measure the junction temperature of LED module is not only intuitive and accurate,but also does not need to contact the LED pin,thus achieving the non-contact measurement of the junction temperature of the LED module.
In visible light communication,the junction temperature of LED module affects its color and electrical characteristics and lifetime,which is very important for measuring and managing the junction temperature of modules.Because of the failure to contact the LED module pins,the non-contact measurement method has attracted people′s attention.Based on the non-contact LED Array junction temperature testing method,a non-contact detection system for VLC-LED module junction temperature is developed.The system consists of three modules,i.e.,control of current source,spectral data acquisition and data analysis and processing.Experimental results show that the deviation between the two spectral parameters method and the central wavelength method is less than 3 degrees.Therefore,using this system to measure the junction temperature of LED module is not only intuitive and accurate,but also does not need to contact the LED pin,thus achieving the non-contact measurement of the junction temperature of the LED module.
引文
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[14]张晶晶,张涛,陈要玲,等.采用LabVIEW编程的LED非接触式结温检测系统[J].自动化仪表,2013,34(9):37-39.
[15]李达波,王钏文,曾成昆,等.基于LabVIEW的非接触式LED结温测试系统[J].科技展望,2016,26(3):120-121.
[16]温怀疆.VLC-LED模组的动态响应及结温测试研究[J].光通信技术,2017(4):46-49.
[17]饶丰,郭杰,许昊,等.采用双光谱参数表征GaN基蓝色LED的结温[J].光电子·激光,2015,26(11):2083-2088.
[18]王振帅,陈明,李超超.基于LabVIEW的PID水温控制系统[J].软件导刊,2018,17(3):139-141.
[19]陈飞,陈奎,谢启,等.LabVIEW编程与项目开发实用教程[M].西安:西安电子科技大学出版社,2016.
[20]沈杨帆,鲍建新,赵新未.基于LabVIEW的车间环境无线监测系统[J].仪表技术与传感器,2017(9):83-87.
[2]骆宏图,陈长缨,傅倩,等.白光LED室内可见光通信的关键技术[J].光通信技术,2011,35(2):56-59.
[3]杨宇,刘博,张建昆,等.一种基于大功率LED照明灯的可见光通信系统[J].光电子·激光,2011,22(6):803-807.
[4]刘立明,郑晓东.LED结温与光谱特性关系的测量[J].光子学报,2009,38(5):1069-1073
[5]赵光华,陈海燕.一种大功率白光LED结温测量方法[J].电路与系统学报,2012,15(1):125-128.
[6]田民波,朱艳艳.白光LED照明技术[M].北京:科学出版社,2012.
[7]余彬海,王垚浩.结温与热阻制约大功率LED发展[J].发光学报,2005,26(6):761-766.
[8]国家标准化委员会.GB/T 24824-2009/CIE 127-2007《普通照明用LED模块的测量方法》[S].北京:中国标准出版社,2009.
[9]邱西振,张方辉.基于相对光谱强度的非接触式LED结温测量法[J].光谱学与光谱分析,2013,33(1):36-39.
[10]HONG E,NARENDRAN N.A method for projecting useful life of LED lighting systems[C].Third International Conference on Solid State Lighting,2004,5187:93-99.
[11]CHEN K,NARENDRAN N.Estimating the average junction temperature of AlGaInP LED arrays by spectral analysis[J].Microelectronics Reliability,2013,53(7):701-705.
[12]饶丰,郭杰,朱锡芳,等.用质心波长表征AlGaInP基LED的结温[J].光电子·激光,2015,26(3):444-449.
[13]饶丰,朱锡芳,徐安成.用归一化光谱分布差异表征AlGaInP基LED阵列的平均结温[J].光学学报.2014,34(9)093004.
[14]张晶晶,张涛,陈要玲,等.采用LabVIEW编程的LED非接触式结温检测系统[J].自动化仪表,2013,34(9):37-39.
[15]李达波,王钏文,曾成昆,等.基于LabVIEW的非接触式LED结温测试系统[J].科技展望,2016,26(3):120-121.
[16]温怀疆.VLC-LED模组的动态响应及结温测试研究[J].光通信技术,2017(4):46-49.
[17]饶丰,郭杰,许昊,等.采用双光谱参数表征GaN基蓝色LED的结温[J].光电子·激光,2015,26(11):2083-2088.
[18]王振帅,陈明,李超超.基于LabVIEW的PID水温控制系统[J].软件导刊,2018,17(3):139-141.
[19]陈飞,陈奎,谢启,等.LabVIEW编程与项目开发实用教程[M].西安:西安电子科技大学出版社,2016.
[20]沈杨帆,鲍建新,赵新未.基于LabVIEW的车间环境无线监测系统[J].仪表技术与传感器,2017(9):83-87.