Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Data Acquisition and Processing》 2011-05
Add to Favorite Get Latest Update

Signal Processing in Transit Time Ultrasonic Flow Measurement Based on Correlation

Pu Cheng,Zhang Tao,Qi Lei(School of Electrical Engineering & Automation of Tianjin University,Tianjin Key Laboratory of Process Measurement and Control,Tianjin,300072,China)  
Signal processing issues on time-of-flight estimation by correlation in transit time ultrasonic flow measurement are discussed,including the position of the envelope extraction and the ambiguity problem when searching the correlation peak.The realistic flow experiments are conducted on the air flow experimental facility to compare the pre-correlation-envelope-extracting(PRCEE) method with the post-correlation-envelope-extracting(POCEE) one.The results show that the average reading error of the flow rate obtained by POCEE is about half of that obtained by PRCEE and the standard deviation is about 1/3,as it takes advantage of the fine structure of the carrier and makes full use of the signal information.Moreover,the probability distribution of the correlation peaks is given.And the time gating at peaks as well as the temporal/spatial median filtering is introduced to solve the ambiguity problem of correlation peak search.With the nonlinear processing techniques,the reading error of flow rate at 18.9 m/s reduces from 30% to 3.3% and the standard deviation from 2 m/s to 0.35 m/s.
【Fund】: 国家高技术研究发展计划(“八六三”计划)(2008AA042207)重点资助项目
【CateGory Index】: TP274;TN911.7
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Chinese Journal Full-text Database 1 Hits
1 CHENG Xiao-chang*,SU Shao-jing,WANG Yue-ke,PAN Zhong-ming,ZHU Qin(School of Mechatronics Engineering and Automation,National Univ.of defense Technology,Changsha 410073,China);Algorithm of TDE Based on Ultrasonic Echo Demodulation and Its Envelope Correlation[J];Chinese Journal of Sensors and Actuators;2006-06
Chinese Journal Full-text Database 10 Hits
1 TANG Bin,CHEN Jin-ping,YANG Long,WANG Li-liang,LIU Hui-yue(Beijng Global Information Center of Application and Exploration,Beijing 100094,China);GPS Multipath Estimation Based on Colored Noise Kalman Filtering[J];Transactions of Beijing Institute of Technology;2010-10
2 PU Cheng,ZHANG Tao,QI Lei(School of Electrical Engineering & Automation of Tianjin University,Tianjin Key Laboratory of Process Measurementand Control,Tianjin 300072,China);The Impact of Overlapped Echoes on Time-of-Flight Estimation by Correlation in Ultrasonic Flow Measurement[J];Chinese Journal of Sensors and Actuators;2010-04
3 CAO Chang-hong,JIANG Li-hui(Tianjin Key Laboratory of Advanced Signal Processing,Civil Aviation University of China,Tianjin 300300,China);Design of ultrasonic anemometer of high precision[J];Transducer and Microsystem Technologies;2010-02
4 WU Jiang, HU Han-ying,WU Ying(PLA Information Engineering University,Zhengzhou 450002, China);Multiple Target Location by Single Station Using Multiple Illuminators[J];Telecommunication Engineering;2008-08
5 HAN Ya-fei LIANG Guo-long FU Jin YIN Jing-wei(Harbin Engineering University,Underwater Acoustic Technology Key Lab of Science and Technology for National Defense,Harbin Heilongjiang 150001,China);Multi-user detection method for effectively reducing computational complexity based on particle filter[J];Chinese Journal of Radio Science;2010-03
6 GUO Yingrui,REN Hongbin,LI Jing(Missile Institute,Air Force Engineering University,Sanyuan 713800,China);Research on Radar Seeker's Detecting of Towed Decoy[J];Electronics Optics & Control;2010-11
7 WANG Xiaonan1,GAO Shan1,LIU Weijian2(1 The Missile Institute,Air Force Engineering University,Shaanxi Sanyuan 713800,China;2 National University of Defense Technology,Changsha 410073,China);Simulation Analysis of Ballistic Missile Target Recognition Based on Characteristics of Micro-motion[J];Journal of Projectiles,Rockets,Missiles and Guidance;2010-01
8 LIU Jian1,XIE Nuo1,2,and ZHOU Xi-yuan1,2 (1.National Key Lab of Integrated Services Networks,Xidian University Xi' án 710071;2.The 54th Research Institute of CETC Shijiazhuang 050081);Blind Recognition Method of RS Coding[J];Journal of University of Electronic Science and Technology of China;2009-03
9 JING Jun,XU You-yun,MA Wen-feng(Institute of Communications Engineering,PLA Univ.of Sci.and Tech.,Nanjing 210007,China);Optimization for H-D information fused cooperative spectrum sensing based on Bayesian criterion[J];Journal of Circuits and Systems;2011-01
10 WANG Lin,LIU Jin-zhu,DUAN De-ping(Nanjing University of Information Science & Techunology,Nanjing 210044,China);Simulation System of QPSK and Performance Analysis of BER[J];Computer Knowledge and Technology;2011-09
China Proceedings of conference Full-text Database 3 Hits
1 SONG Lei WANG Da-cheng LIANG Shan-shan DING Shi-qi (Collage of Underwater Acoustic Engineering,Harbin Engineering University,Harbin 150001,China);A Study of the Application of Spread Spectrum Techniques to Underwater Acoustic Positioning System[A];[C];2007
2 Zhu Hong Bai Wenle Niu Changliu College of Information Engineering,North China University of Technology,Beijing,100041;Analysis of timing estimation algorithm of two kind of cost functions in PAM modulation[A];[C];2008
3 WANG Bao-sheng~(1,2)HAO Hong-yan~2 (1.Jiangsu Key Laboratory of Advanced Numerical Control Technology,Nanjing 210013,China; 2.Nanjing Institute of Technology,Nanjing 211167,China);Study on Computer Aided Testing System for Dropping Shock[A];[C];2007
【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
1 SUI Wei-ping, PAN Zhong-ming, WANG Yue-ke (College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073 China);A New Type of Driving and Echoes Detection Circuit for Ultrasonic Transducers[J];Journal of National University of Defense Technology;2004-03
2 Ma Zhimin\ Jia Jia (Research Institute of Water Conservancy and Hydroelectric Power);Methods of Promoting Small Signal in Ultrasonic Testing[J];JOURNAL OF WUHAN UNIVERSITY OF HYDRAULIC AND ELECTRIC ENGINEERING;1998-06
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved