摘要
针对传统便携式热电型光功率计测量精度低的问题,基于电替代原理设计了一种便携式宽波段高精度光功率计。首先,建立光功率计的热平衡方程及温度响应的理论模型。其次,设计光功率计的结构,采用有限元软件(COMSOL Multiphysics)仿真分析各元件结构参数(材料、尺寸、位置)对其热平衡及光电传热过程差异性的影响,得到了光功率计的温度响应曲线。最后,研究了影响测量精度的主要参量,评估各影响量不确定度,分析光功率计的不确定度。结果表明:该光功率计能实现光功率的高精度测量,不确定度优于0.5%。
For the problem that traditional portable thermoelectric optical power meter has low measurement accuracy, a portable wide-band high-precision optical power meter based on the principle of electrical substitution was designed.Firstly, the thermal balance equation and temperature response theoretical model of optical power meter were established.Secondly, the structure of the optical power meter was designed.The influence of the structural parameters(material, size and position)of each element on its thermal balance and the difference of photoelectric heat transfer process was simulated and analyzed by finite element analysis(FEA)software(COMSOL Multiphysics),and the temperature response curve of the optical power meter was obtained.Finally, the main parameters which influence the measurement accuracy were studied, the uncertainty of influence factors on the optical power meter was evaluated, and the uncertainty of the optical power meter was analyzed.The results show that the optical power meter can achieve high-precision measurement, and the uncertainty is better than 0.5%.
作者
赵聪
叶新
方伟
王凯
吴铎
ZHAO Cong;YE Xin;FANG Wei;WANG Kai;WU Duo(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2022年第8期30-35,57,共7页
Instrument Technique and Sensor
基金
国家重点研发计划项目资助(2018YFB0504600,2018YFB0504603)。
关键词
光功率计
电替代原理
有限元分析
多物理场
高精度
optical power meter
principle of electrical substitution
finite element analysis(FEA)
multi-physics field
high-precision
作者简介
赵聪(1997-),硕士研究生,主要研究方向为光辐射、光功率测量。E⁃mail:18514301872@163.com;通信作者:叶新(1979-),研究员,博士生导师,主要研究方向为太阳辐射、地球辐射绝对测量及光谱辐射基准与溯源。E⁃mail:yexin@ciomp.ac.cn。
