说明：  超声多普勒流量计在流量测量、企业管理及流量监测与控制中具有广阔的应用前景, 但目前大部分流量计仍使用过 零检测法,精度不高。本文从理论上介绍了采用频谱分析法消除了理论上的误差, 提高了测量精度。同时介绍了硬件电路电 路、软件处理及试验结果。
(Doppler flowmeter in the flow measurement, enterprise management and traffic monitoring and control has broad application prospects, but most still use flowmeter zero crossing detection method, the accuracy is not high. This paper theoretically introduce the use of spectrum analysis method to eliminate the theory of error, improve the measurement accuracy. At the same time introduce a hardware circuit circuits, software and test results of treatment.)