科技创新与应用2024，Vol.14Issue(5)：69-72,4.DOI:10.19981/j.CN23-1581/G3.2024.05.017
基于全反射原理的透明液体浓度测量方法研究
摘要
Abstract
Nowadays,there are various methods for measuring the concentration of transparent liquids,such as the specific gravity method,refractive index method(minimum deviation angle method),ultrasonic grating method,etc.All of the above methods need to be used to establish the relationship among concentration and density,refractive index,sound velocity,and light loss,thus obtaining a characterization of the measured concentration.This paper proposes using the principle of total reflection,when the light is emitted from the light dense medium to the light sparse medium,and the incident angle exceeds a certain angle θc(critical angle),the refracted light disappears completely,there only remains reflected light which is called total reflection.Taking NaCl solution as an example,by measuring the total reflection phenomenon caused by different concentrations of NaCl solution,the height change of the incident light source is caused.Through experimental exploration,it is found that the"concentration-height"shows a linear negative correlation,and this relationship is used to measure the concentration of transparent liquids.Research experiments have shown that the fitted correlation coefficient R2=0.9957 has a good fitting effect and a measurement accuracy of 99%.关键词
透明溶液/浓度/全反射/测量/临界角Key words
transparent solution/concentration/total reflection/measurement/critical angle分类
数理科学引用本文复制引用
肖恩赞,李兆麒,徐佳利,钟晓娇,赵海超,王永康,秦海森..基于全反射原理的透明液体浓度测量方法研究[J].科技创新与应用,2024,14(5):69-72,4.基金项目
国家级大学生创新创业训练计划(202311116010) （202311116010）
成都工业学院青苗计划(QM2023057) （QM2023057）
