流量测量中超声多普勒信号的频谱特点及其与管道中流速的关系  

Characteristics of the Ultrasonic Doppler Spectrum Signal in Flow Measurement and Their Relations with Pipe Flow Velocities

作　　者：李朝晖[1] 刘连傅 姜天仕[1] 段慧明[1] 翟秀贞[1] 

机构地区：[1]北京大学,中国计量科学研究院

出　　处：《计量学报》1995年第1期68-72,共5页Acta Metrologica Sinica

摘　　要：研究了工业测流的超声多普勒信号的频谱特点，并以此为依据分析了不同安装方式对多普勒频谱的影响，提出了不同测量环境下，应用多普勒频谱计算流速的公式及必要的修正，为提高检测准确度提供了理论依据。The authors have studied the characteristics of ultrasonic Doppler spectrum signal in the industrial flow measurement. The influences on the Doppler spectrum due to the different installation arrangements in the pipe have been analyzed.As a result, both the flow calculating formulas and necessary corrections under various measuring conditions have been found, and then it becomes possible to improve the accuracy of flow measurements based on the Doppler spectrum.

关 键 词：频谱信号 流速 超声多普勒信号 流量测量 

分 类 号：TH814.01[机械工程—仪器科学与技术]