基于红外差分算法的粉尘浓度检测系统设计  

Design of Dust Concentration Detection System Based on Infrared Difference Algorithm

作　　者：高敬东 范吉宏 孙玉超 高守峰 董强 刘乾 郑宸 程学珍 Gao Jing-dong;Fan Ji-hong;Sun Yu-chao;Gao Shou-feng;Dong Qiang;Liu Qian;Zheng Chen;Cheng Xue-zhen(Shandong Dongshan Xinyi Coal Mine Co.,Ltd,Shandong Jining 272106;College of Electrical Engineering and Automation,Shandong University of Science and Technology,Shandong Qingdao 266590)

机构地区：[1]山东东山新驿煤矿有限公司,山东济宁272106 [2]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《电子质量》2018年第12期25-31,共7页Electronics Quality

基　　金：国家自然科学基金项目(No.61503224);山东省自然基金项目(No.ZR2017MF048);山东省研究生教育质量提升计划建设项目(No.2016050);青岛市民生科技计划项目(No.17-3-3-88-nsh)

摘　　要：传统的光学仪器和方法测量粉尘浓度信号容易受到环境、光源、电路等多种因素的干扰,基于此,设计了一套基于红外差分法的粉尘浓度信号检测系统。首先建立浓度检测数学模型,然后根据数学模型搭建光学平台,接着对探测器得到的微弱光电流进行转换和放大,基于PXI-6251、PXIe-1062Q等设备,通过图形化编程语言(G语言)实现对信号的采集与处理。实验结果表明,该方法能更好地从充满噪声的粉尘信号中提取有用信号,提高了粉尘浓度信号检测的精度。Traditional optical instruments and methods to measure dust concentration signal are easily interfered by many factors such as environment,light source,circuit and so on.Based on this,a dust concentration signal detection system based on infrared differential method is designed.Firstly,the mathematical model of concentration detection is established,then the optical platform is built according to the mathematical model,and then the weak photocurrent of the detector is converted and amplified.Based on PXI-6251,PXIe-1062 and other equipment,the signal acquisition and processing is realized through the graphical programming language(G language).The experimental results show that the method can extract useful signals from the noisy dust signal better,and improve the precision of dust concentration signal detection.

关 键 词：红外差分 粉尘浓度 G语言 信号采集 LABVIEW 

分 类 号：X831[环境科学与工程—环境工程]