高精度旋转遮挡式太阳辐射监测仪设计  

High-precision rotary shielding solar radiation monitor design

作　　者：徐志安 李鹏[1,2] 冯姣 王永 Xu Zhian;Li Peng;Feng Jiao;Wang Yong(College of Electronics and Information Engineering,Nanjing University of Information Science&Technology,Nanjing 210044,China;Nanjing Qiyun Zhongtian Technology Co.,Ltd.,Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]南京旗云中天科技有限公司,南京210044

出　　处：《电子测量技术》2024年第20期150-158,共9页Electronic Measurement Technology

摘　　要：针对旋转遮光式太阳辐射监测系统采用的硅光电二极管型辐射传感器具有光谱窄、精度低、长期稳定性差的缺点,提出了一种利用热电堆阵列动态校准硅光电二极管阵列的方法,并设计了一款轻量化、低成本、高精度的旋转遮挡式太阳辐射监测装置。该检测系统采用静态过程与动态过程实时交替的方式进行探测,分为静态采集光强大小和动态采集遮光带在旋转的过程中热电堆阵列、硅光电二极管阵列的光强变化,通过计算出太阳高度角和后续数据处理,得到太阳总辐射、直接辐射和散射辐射值。误差分析图显示,总辐射的均方根误差为1.859 W/m^(2),直接辐射和散射辐射分别为2.922 W/m^(2)、2.770 W/m^(2),相比使用单一硅光电二极管阵列,均方根误差分别降低了8.908 W/m^(2)、5.454 W/m^(2),证明该测量方法具备较高的检测精度。Aiming at the shortcomings of silicon photodiode type radiation sensor used in rotating shading solar radiation monitoring system,such as narrow spectrum,low precision and poor long-term stability,a method of dynamic calibration of silicon photodiode array using thermonuclear array is proposed,and a lightweight,low-cost and high-precision rotating shading solar radiation monitoring device is designed.The detection system uses static process and dynamic process to detect in real time alternately.It is divided into static acquisition of light intensity and dynamic acquisition of light intensity changes of thermonuclear array and silicon photodiode array in the rotating process of the light shield.By calculating the solar altitude angle and subsequent data processing,the value of total solar radiation,direct radiation and scattered radiation can be obtained.The error analysis figure shows that the root mean square error of the total radiation is 1.859 W/m^(2),the direct radiation and the scattered radiation are 2.922 W/m^(2) and 2.770 W/m^(2),respectively.Compared with the single silicon photodiode array,the root mean square error is reduced by 8.908 W/m^(2) and 5.454 W/m^(2),respectively.It is proved that the measurement method has high detection accuracy.

关 键 词：热电堆阵列 硅光电二极管阵列 旋转遮挡 辐射采集 太阳高度角 

分 类 号：TK513.4[动力工程及工程热物理—热能工程] TN98[电子电信—信息与通信工程]