矿用乳化液浓度在线检测系统设计  

Design of on-line detection system of mine emulsion concentration

作　　者：席波 王诗翱 郭建伟 XI Bo;WANG Shi'ao;GUO Jianwei(China Pingmei Shenma Group,Pingdingshan 467099,China;Faculty of Electrical and ControlEngineering, Liaoning Technical University,Huludao 125105,China)

机构地区：[1]中国平煤神马集团,河南平顶山467099 [2]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105

出　　处：《工矿自动化》2020年第9期98-103,共6页Journal Of Mine Automation

基　　金：辽宁省重点研发指导计划项目(2019JH8/10100050);辽宁省教育厅科学研究一般项目(LJYL013)。

摘　　要：针对现有乳化液浓度检测方法受温度影响较大、无法实时测量并全程跟踪采样的问题,在传统密度法的基础上,设计了一种矿用乳化液浓度在线检测系统。该系统通过嵌入储液箱的拉力传感器、温度传感器和液位传感器监测乳化液实时状态信息并发送至DSP控制终端,DSP控制终端根据密度法原理求解当前乳化液浓度并上传至上位机,实现实时在线检测功能。采用温度补偿技术减小不同温度下的测量误差,采用FIR数字滤波技术对传感器支架和箱体带来的振动干扰进行滤波,并采用梯度下降算法校正拉力传感器参数,提高测量精度。实验结果表明,该系统可实时在线检测矿用乳化液浓度,检测值和标准值的最大误差为1.5%,满足煤矿生产要求。In view of problems that existing emulsion concentration detection methods are greatly affected by temperature and cannot be measured in real time and tracked and sampled throughout the entire process,on the basis of traditional density method,an on-line detection system of mine emulsion concentration was designed.The system monitors real-time status information of emulsion through tension sensor,temperature sensor and liquid level sensor embedded in storage tank and sends it to DSP control terminal.The DSP control terminal solves the current emulsion concentration based on principle of density method and uploads it to the host computer to achieve real-time on-line detection function.Temperature compensation technology is used to reduce measurement error at different temperatures,FIR digital filtering technology is used to filter the vibration interference caused by the sensor bracket and box,and gradient descent algorithm is used to correct the tension sensor parameters to improve measurement accuracy.Experimental results show that the system can realize real-time and on-line detection of mine emulsion concentration,and the maximum error between the detection value and the standard value is 1.5%,which meets the requirements of coal mine production.

关 键 词：乳化液浓度 密度法 温度补偿 FIR数字滤波 梯度下降算法 

分 类 号：TD355.4[矿业工程—矿井建设]