面向灌区调水工程的远程自动计量闸门研究

设计了一种基于远程无线通信技术的灌区动态调水系统,由安装于各级渠道上的自动计量闸门集群和运行于调度中心的远程调水控制系统组成。利用明渠测流理论和传感测量技术,实现了闸门的计量功能;对称双轮双向卷拉驱动机构和中空蜂窝闸板结构设计,提高了闸门启闭运动的可靠性和闸门运行能效;开发了基于ARM的闸门终端控制器,实现了闸门终端的智能控制和无线远程通讯,多种闸门工作模式可满足不同的应用需求;设计了太阳能供电与电源管理系统,解决了闸门野外工作的供电问题;开发了远程动态调水控制的应用软件包,实现了对闸门的远程监控与联动调水。实验表明,闸门终端环境适应性强,性能稳定,动态水位误差小于5 mm,闸门定位误差小于1 mm,自由流的测流误差小于4.6%,淹没流测流误差小于8.3%,可满足各类自动调水工程应用。

Development of Remote Automatic Metering Sluice Oriented to Irrigation Water Diversion Project

Based on remote networking technology, a dynamic irrigation water diversion system was developed. The system consisted of automatic metering sluice clusters installed on the canals and remote diversion control and management system working in dispatching center. Combined with open channel flow measurement principle and sensor technology, the metering function of the gate was designed. The symmetrical bidirectional coupled winding wheel pulling mechanism and hollow honeycomb structure gate panel were utilized, which could improve the movement reliability and the energy efficiency. An ARM-based gate controller and software system were developed to achieve the gate intelligent control and wireless remote communication function. Various working modes of the sluice could meet the different applications needs. A solar power system was devised to solve the outdoor power supply problem of the automatic gate. To implement the remote linkage control of the sluice clusters, remote water diversion control software package was developed. The application and experiment results showed that the gate terminal had good adaptability to outdoor environment and stable work performance. The water level control error was less than 5mm and the gate gap positioning control error was less than 1mm. Under free flow conditions the flow measurement error was less than 4.6%, and under submerged conditions the flow measurement error was less than 8.3%. The remote automatic metering gate could satisfy all kinds of automatic water conveyance project applications.