| 微机控制超声多普勒法测量液体粘滞系数 |
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| 引用本文： | 魏忠仁,郭敏,刘志存.微机控制超声多普勒法测量液体粘滞系数[J].陕西师范大学学报,1992(1). |
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| 作者姓名： | 魏忠仁 郭敏 刘志存 |
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| 作者单位： | 陕西师大物理系，陕西师大物理系，陕西师大物理系 |
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| 摘 要： | 硬件结构框图如下:Ⅰ为超声探头电路,采用陕西师大应用声学研究所研制的超声多普勒血流计,用来产生频移讯号.其中:1为发射电路,产生3MHz 的电汛号;2为组装在一块的发射、接收换能器。其中的发射换能器用来将1产生的电讯号转换为超声讯号,射向在液体中下落的小球;接收换能器则将由小球反射回来的超声讯号转换为相应的电讯号,送接收电路;3为接收电路.对接收换能器送来的电讯号放大、整形后送给差频电路;4为差频电路,
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Ultrasonic Doppler measurement of liquid's retarding coefficient by microcomputer |
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| Wei Zhongren Guo Min Liu Zhicun.Ultrasonic Doppler measurement of liquid''''s retarding coefficient by microcomputer[J].Journal of Shaanxi Normal University: Nat Sci Ed,1992(1). |
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| Authors: | Wei Zhongren Guo Min Liu Zhicun |
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| Institution: | Department of Physics |
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| Abstract: | Ultrasonic Dopple measurcmcnt of liquid's retarding coefficient by microcomputer is given.Ball's dropping speed in liquid is mcasured via ultrasonic doppler methods.The single-ship computer collects,processes data,and displays the results.The rctarding coefficient can be quickly and accurately detcrmined by using this method. |
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| Keywords: | ultrasonic Doppler effect Mes 51 single ship computer dropping ball methed frequency shfiting singnal |
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