针对河工模型试验中多点流速自动测量的需要,设计了一种多点水深流速同步自动采集系统。系统由计算机通过RS485总线与多台水深流速仪相连,组成多点水深流速自动测量。水深流速仪能够自动测量当前水深,并根据测得的水深和规定的测量法则,如1点法、3点法、5点法等,自动对流速传感器进行垂线定位和流速采集。系统通过串行通信方式控制各台水深流速仪,实现各垂线流速的同步测量、数据传输、显示、保存和查询功能,并能自动生成需要的测量记录报表。该系统显著提高了模型试验断面流速测量的效率和水深测量与定位的精度。
Abstract
In order to meet the need for automatic measurement of multi-point flow velocity in river model experiment, a synchronous automatic system of multi-point flow velocity acquisition at different water depths is designed. The system computer is connected with multiple flow meters at different depths via RS485 bus. The flow meters can automatically measure the current water depth, and fix the position vertically and acquire the flow velocity for flow velocity sensor according to the measured water depth and a predetermined rule such as 1-point method, 3-point method, or 5-point method. The system computer controls each flow meter to achieve functions of simultaneous measurement of each vertical velocity, data transmission, data display, data save and query, and to automatically generate the required measurement recorded statements via a serial communication mode. The system significantly improves the velocity measurement efficiency and the accuracy of depth measurement and positioning for river model experiments.
关键词
流速测量 /
水深测量 /
河工模型试验 /
多点自动测量系统
Key words
velocity measurement /
depth measurement /
river model experiment /
multi-point automatic measurement system
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参考文献
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