超声波多普勒流速测量方法的信息窗区域控制研究  

Investigation on Controlling the Area of Information Window by Doppler Ultrasonic Method

作　　者：李昕[1] 王子延[2] 

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]西安交通大学能源与动力工程学院

出　　处：《西安交通大学学报》2001年第5期455-458,共4页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目! (5 96 76 0 33)

摘　　要：通过对超声波多普勒信息窗区域的控制 ,实现了管流内部流速的分区测量 .研制出的发射传感器和接收传感器 ,能够分别产生细长的发射声束和接收声束 ,使信息窗区域面积能够控制在很小的范围内 ,位置也被控制在设计值处 ,满足了分区测量的要求 .设计的模拟管道流动装置 ,能够提供管道流动截面上某一小区域上的流速 ,为分区测量提供了信号源 .成功地进行了信息窗区域面积的控制和位置的实验测量 。A method to measure flow velocity in a special region by controlling the information window of a Doppler ultrasonic flow meter is presented. A set of emitter which slenderize the acoustic wave has been designed, and also a set of receiver which select the scattered acoustic wave according to the position of the scattering particle has been designed. In this way the information window can be positioned in a small area in a desired position. Experiment was gone by measuring the velocity of small bubbles and the measured value is very close to the set value of the bubble emitter.

关 键 词：多普勒效应 超声波传感器 散射回波 流速测量 信息窗 

分 类 号：TH814.92[机械工程—仪器科学与技术]