设计了一种基于实时双光路校准的分光测色仪结构, 在现有双光路设计中加入校准光源对主光路和辅助光路进行实时双光路校准.构建算法对由温度变化引起的传感器响应效率变化进行修正, 并设计实验在不同温度下对仪器采样稳定性进行评价.实验表明, 采用了实时双光路校正仪器的工作温度从10℃变化至30℃后, 测量数据稳定性标准偏差小于等于0.03, 最大偏差小于等于0.04, 相对于现有技术方案有显著改善.

A improved double-beam structure in spectrophotometer was proposed which has an extra calibration light source in the design of the double-beam to calibrate both the main beam and the auxiliary beam in real time. The related optimisation spectral data sampling algorithm was presented to modify the change of sensor response efficiency caused by temperature change, the effect of the proposed structure with a series of customised experiments at at different ambient temperatures was evaluated. Experiment results show that when operated in an environment with a temperature change from 10℃ to 30℃, double-beam correction instrument is able to produce measurements repeatability, the standard deviation with an average is less than or equal to 0.03, and the maximum is less than or equal to 0.04, which is a significant improvement to existing products.