摘要：【中文】一种明渠水位跟踪便携式超声波自动测流方法，所述自动测流方法是将自动测流装置置于明渠渠道上方，并将支撑杆垂直插入水底，接通电源，液位超声波传感器先测量明渠水位高度，传感器发射超声波至水面，通过高度差计算获得水位，测量杆通过滑块在丝杆上下位移并在舵机带动下作360度旋转，智能控制器根据水位高度自动控制超声波探头位置，并分别置于水面和水底，相向交替发射接收超声波，将采集数据无线传输到监控设备，根据时差法原理求得流速，利用程序自动算出整个渠道的流量并在液晶显示屏上显示出来，本方法不受水体环境影响，测量精度高，适用范围广，省时省力，具有广阔的应用前景。 【EN】A portable ultrasonic automatic flow measuring method for tracking the water level of open channel features that an automatic flow measuring unit is arranged above the channel of open channel, a supporting rod is inserted in water bottom, a power supply is connected, a liquid level ultrasonic sensor measures the height of water level of open channel, the ultrasonic sensor emits ultrasonic waves to water surface, the water level is calculated out by height difference, a measuring rod is moved up and down by a slide block and driven by a steering engine to rotate 360 deg, an intelligent controller automatically controls the position of ultrasonic probe according to the height of water level, and is arranged on water surface and water bottom, alternatively emits and receives ultrasonic waves in opposite directions, the collected data is wirelessly transmitted to monitor, the flow rate is calculated out by time difference method, the flow of channel is automatically calculated out by program and displayed on LCD screen, and the method is not affected by water environment, has high measuring precision and wide application range, time and labor are saved, and the method has wide application prospect.