过零极性相关法在单相流体流速测量中的应用

Flow Speed Measurement by Intelligent Zero-Crossing Polarity Cross-Correlator

依据过零极性相关测量方法的基本原理，研制成了在Ｚ—８０单板机上构成的过零极性相关器，并利用热线风速仪作为标定设备，进行了极性相关测量技术用于气体流速测量的实验研究。实验结果表明，用过零极性相关测量方法测单相气体流速是可行的。

The zero-crossing polarity cross-correiator produced on Z-80 microcomputer and based on the principle of zero-crossing polarity cross-correlation method is reported. Regarding hot-wire anemometer as a calibration equipment,the experimental study of using this method to measure gas flow velocity is carried out. The experiment results shows that to measure one-phase gas by this method is possible.