基于光谱分析的明视觉照度传感器设计研究

Design and Investigation on Illumination Sensors of Photopic Vision Based on Spectral Analysis

基于光谱分析,给出了非镀膜明视觉照度传感器的设计流程,通过计算传感器理论相对光谱响应与明视觉光谱光效率函数的中心波长、半峰全宽和在380~780nm波段的积分面积的相对偏差,评估传感器匹配误差。利用蓝色玻璃QB21、黄色玻璃LB9和LB16与LXD44MQ硅光电池组合自主设计非镀膜明视觉照度传感器,与明视觉光谱光效率函数相比,该照度传感器理论相对光谱响应中心波长、半峰全宽和在380~780nm波段的积分面积的相对偏差分别为0.36%、5.00%和14.15%。以TES 1330A照度计作为标准参考,0~2000lx内10组测量值的平均绝对误差及平均相对误差分别为7.82lx和1.77%。研究结果证明了该明视觉照度传感器设计方法可行,可为相关照度传感器的设计开发提供参考。

Spectral analysis is used to present the design flow of a non-coated photopic visual illumination sensor.The sensor matching error is evaluated by calculating the relative deviation of central wavelength,full width at half maxima,and the integral area in 380--780 nm band between theoretical relative spectral response and apparent photopic visual spectral efficiency function.Using the combination of blue glass QB21,yellow glass LB9,LB16,and LXD44 MQ silicon photocell,the theoretical relative spectral response of the illumination sensor is compared with the spectral efficiency function of the photopic illumination spectrum.The relative deviations of the central wavelength,full width at half maxima,and the integral area in 380--780 nm band are 0.36%,5.00%,and 14.15%,respectively.With TES 1330 Ailluminometer as the standard reference,the average absolute error and relative error of 10 groups measured in the range of 0--2000 lx are 7.82 lx and 1.77%,respectively.Results show that the proposed method is feasible and can be used as a reference for the design and development of related illumination sensors.