为了提高河工模型检测与控制自动化水平，采用机电式自动跟踪水位计及自行设计的异形板结构掺沙阀门，自适应ＰＩＤ算法和独特的控制流程，以每级流量时间为基础，设计出了一个集流量、掺砂、水位检测与控制为一体的全自动控制系统。系统水位控制精度达到０．１ｍｍ，能在７ｍｉｎ左右使水位达到稳定。应用于南水北调穿黄河工模型后，各项指标均满足系统设计要求。 In order to improve the level of automation of river model detection and control, the electromechanical automatic tracking water level gauge and self-designed special-shaped plate structure sand-mixing valve, adaptive PID algorithm and unique control flow are used to design a Set flow, sand mixed, water level detection and control as one of the fully automatic control system. System water level control accuracy of 0.1mm, in about 7min so that the water level to achieve stability. Applied to the Yellow River after the South-North Water Transfer Model, the indicators meet the system design requirements.