1前言流速是流体流动测量的基本参数，许多流量的测量最终都归结为对流速的测量，因而在科研和生产中对流速测量仪表的需求量很大，在某些科学试验中，大量的流速测量点需要同时取得数据，迅速得到结果，这就要求传感器能迅速反应并能适座高记录和显示，同计算机联网实现数据的 1 Introduction Flow velocity is the basic parameter of fluid flow measurement, many of the flow measurement eventually comes down to the measurement of flow velocity, so in the research and production of flow velocity measuring instruments in great demand, in some scientific experiments, a large number of flow velocity The measurement point needs to obtain the data at the same time, get the result promptly, this requires the sensor to respond promptly and can seat and record well and reveal, connect with the computer and realize the data