1.School of Electrical and Automation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
2.Engineering Technology Research Center of Industrial Automation, Anhui Province, Hefei, Anhui 230009, China
3.Chongqing Sichuan Automation Co. Ltd., Chongqing 404001, China
Abstract：To solve the problem of slurry measurement for electromagnetic flowmeter, the statistical signal models of both water flow-rate and slurry are built up by means of probability analysis method so as to reveal their statistical distribution patterns. And then a reconstruction-filter processing method is proposed for EMF to measure slurry. To verify the effectiveness of the algorithm, the slurry experiments are conducted to compare the performance indexes of our system with those of the slurry-type EMF made by Toshiba Company in Japan. The experimental results show that both the processing algorithm and system for slurry developed by us are feasible and effective.
［1］Hemp J, Sanderson M L. Electromagnetic flowmeters - a state of the art review［C］//International Conference on Advances in Flow Measurement Techniques, 1981: 319-340.
［2］Shercliff J A. The theory of electromagnetic flow-measurement［M］. Cambridge, UK: Cambridge University Press,1962.
［3］蔡武昌,等.电磁流量计［M］.北京:中国石化出版社,2004.
［4］Tamotsu Kobayashi, et al. Electromagnetic flowmeter:US,4773274［P］. 1988-09-27.
［5］Ichiro Wada. Electromagnetic flowmeter utilizing magnetic fields of a plurality frequencies:US,5090250［P］. 1992-02-25.
［6］Peters J,Shook C A. Electromagnetic Sensing of Slurry Concentration［J］.The Canadian Journal of Chem Eng,1981, 59, 430-431.
［7］Eren H,Goh J. Signal extraction from magnetic flowmeters for density measurements［C］// IEEE, Instrumentation and Measurement Technology Conference.Hamamatsu, Japan, 1994,1213-1216.
［8］XIA Y M, XU Z Q. Electromagnetic Flowmeter Measurement and Numerical Computation of Laminar Flow Transport Pipeline Flow Quantity［C］//2009 Second International Symposium on Electronic Commerce and Security. 2009 Second International Symposium on Electronic Commerce and Security（ISECS 2009), 2009, 169-173.
［9］顾志祥.浆液型电磁流量计:中国,101451867［P］.2009-06-10.
［10］杨双龙,王刚,徐科军,等.基于线性电源的单/双频电磁流量计励磁控制系统\[J\].电子测量与仪器学报,2010, 24(2):147-152.
［11］杨双龙,王刚,徐科军,等.基于高低压电源切换的双环恒流控制电磁流量计励磁控制系统\[J\]. 计量学报,2011, 32(3):193-197.
2012, Vol. 33 
