传统彩虹测量技术标定复杂、精度可重复性差且难以适应密闭空间。一种基于多彩虹谱线自标定方法, 可省去原有的标定系统装置, 将标定过程内化于对彩虹信号的处理, 以水为例的测量偏差仅为0.13%。将该技术应用于混合喷雾液滴组分浓度测量中, 探究并优化了参与混合的两种液体组分的方案。实验采用60%乙醇-水混合喷雾, 原位测量了混合喷雾场多点组分浓度, 测量结果差别可以控制在0.5%以内, 表明该方法技术在相关领域的应用潜力。

Calibration of the traditional rainbow measuring technique has the following disadvantages, complex equipment, precision reliance on manual operation, poor reproducibility and difficult to adapt to the measurement needs of confined space. A self-calibration method based on multi rainbow spectrum is proposed, eliminating any original rainbow measuring technology calibrate system device. The calibration process is put into the process of rainbow signal processing. With the measurement, it only needs to be processed with spray signal itself. And deviation of water measurement is just 0.13%. The technology is used in global rainbow technology to measure mix component concentrations in the spray droplets. Factors affecting the issues are explored and the program of two liquid components which involved is optimized. 60% ethanol-water mixture spray is used in the experiments, and the concentration of mixed multi-component spray is measured in situ measurements. Comparing with the traditional method, the difference in the measurement results can be controlled within 0.5%. Moreover, self-calibration method has better maneuverability in situ measurements. Application of this method shows the potential in related fields.