针对河工模型大范围断面垂线流速的自动采集系统对水面边界快速测量的需要,研制出了一种基于激光扫描原理的水面边界快速测量装置,该装置采用高分辨率线阵式CCD和激光三角法原理,实现了模型断面水面边界的快速扫描测量,并已成功应用于河工模型大范围流速同步采集与应用示范项目中。该方法具有测量速度快、精度高、无接触等优点,是河工模型水面边界快速测量很好的解决方案。

In response to the demand of rapid measurement of water surface boundary in river model test, an instrument based on the laser scanning principle is developed. The instrument adopts high-resolution line matrix CCD and laser triangulation principle to detect and identify the water surface rapidly. It has been successfully applied to the synchronization acquisition of a wide range of flow velocity in physical river model. The instrument has advantages of high speed, high precision, and non-contact measuring, hence could be a feasible alternative for rapid measurement of water surface boundary in physical river model.