基于OpenCV的溶液浓度监测装置的设计与实现  

Design and Implementation of a Solution Concentration Monitoring Device Based on OpenCV

作　　者：祁皓然 雷明晴 郭书畅 蒋子琦 张益恺 申子嫣 Haoran Qi;Mingqing Lei;Shuchang Guo;Ziqi Jiang;Yikai Zhang;Ziyan Shen(College of Information Science and Technology,Beijing University of Chemical Technology,Beijing 102200,China;College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 102200,China)

机构地区：[1]北京化工大学信息科学与技术学院,北京102200 [2]北京化工大学机电工程学院,北京102200

出　　处：《大学化学》2024年第12期378-384,共7页University Chemistry

基　　金：教育部工程创客教育虚拟教研室青年项目;北京市高等教育学会2022年立项课题(MS2022391);北京化工大学2023本科教育教学改革重点研究项目(2023BHDJGZ06)。

摘　　要：溶液浓度的检测在科研、教学以及工业应用中具有重要意义。为了解决传统溶液检测方法流程复杂、耗时耗材、成本高等问题,本文介绍了基于颜色特征值设计出的有色溶液浓度检测方法。该方法利用一套检测溶液颜色的简易装置,研究出一种基于朗伯-比尔定律和图像比色法相结合的溶液颜色图像识别系统。利用OpenCV(Open Source Computer Vision Library)对系统采集到的不同浓度的溶液的图像进行处理,从而建立溶液的HSV(Hue,Saturation,Value)颜色特征值与其浓度的回归模型以便实现对溶液浓度的准确测量。实验结果表明该方法的线性拟合效果良好,为实验教学与工业生产质量监测提供了新的解决方案。此外,该方法所设计的检测装置进一步改良,还可以应用于测量溶液的包括pH等在内的其他数据。Solution concentration detection plays a crucial role in research,education,and industrial applications.To address the complexity,time consumption,and high costs associated with traditional methods,this study introduces a color-based solution concentration detection method.The method employs a simplified device to capture solution color,mitigates the effects of ambient light,and utilizes a system for solution color image recognition based on the Lambert-Beer law and image colorimetry.Using OpenCV(Open Source Computer Vision Library),images of solutions with varying concentrations are processed to establish a regression model correlating HSV(Hue,Saturation,Value)color features with solution concentrations,enabling accurate measurement.Experimental results demonstrate strong linear correlation(R2=0.99)between HSV values and concentrations,particularly with copper sulfate solutions ranging from 0 to 50 mg∙mL−1.This method offers a novel solution for quality control in industrial production and enhances educational experiments.Furthermore,the adaptable design of the detection device facilitates measurement of additional solution parameters,including pH,expanding its utility in diverse applications.

关 键 词：有色溶液浓度 OPENCV 机器视觉系统 HSV颜色空间 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]