| 摘要: |
| 【目的】实现灌区明渠输配水的智能化控制。【方法】采用传感测量、电气控制、机械设计制造和无线通信等技术，研发了一种基于PLC和物联网的灌区测控一体化闸门系统，该系统主要包括两大部分：现地闸门终端和物联网远程监控系统。本研究运用矩形渠道平板闸门的过流量检测方法，然后融合信息采集、自动控制等技术，使该闸门系统具备渠道水位、闸门开度、过闸流量等参数的计量功能；采用对称双齿轮齿条作为平板闸门升降的传动机构，提升了闸门启闭运行的稳定性、安全性和效率；研制了基于PLC的现地闸门终端控制装置，具有闸门终端远程通信和自动控制的功能；开发了远程监控平台软件，包含手机端和电脑端，实现了对闸门的远程监控与工情数据管理。【结果】闸门终端工作性能稳定，系统具有计量精度高、稳定性强、操作和维护方便的特点，闸门开度控制的最大误差为1 mm，网络丢包率接近于零，自由出流的测流误差小于4.6%，淹没出流的小于8.3%。【结论】因此，该系统适用于灌区中小型渠道输配水过程的精准控制。 |
| 关键词: 明渠测流；平板闸门；远程智能控制；物联网 |
| DOI：10.13522/j.cnki.ggps.2022481 |
| 分类号: |
| 基金项目: |
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| Design and Experiment of Measurement and Control Gate System in Irrigation Districts |
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JIANG Mingliang
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1. Institute of Farmland Irrigation, CAAS, Xinxiang 453002, China;
2. School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China
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| Abstract: |
| 【Background】Intensive and efficient utilization of water resources is a key link in the modernization of irrigation areas in China. As a general hydraulic structure, sluice plays an important role in the allocation of water resources in irrigation areas.【Objective】In order to realize the intelligent control of open channel water transmission and distribution in irrigation area, an intelligent open channel flat gate system based on Internet of things and PLC is developed by using the technologies of mechanical design and manufacturing, automatic control, sensor detection and Internet of things. The system is mainly composed of local measurement and control integrated gate terminal and Internet of things remote monitoring system.【Method】By using the open channel flow measurement theory and sensing measurement technology, the measurement of channel water level, gate opening and gate flow is realized; As the opening and closing transmission mechanism of the flat gate, the symmetrical double gear rack improves the reliability and energy efficiency of the gate opening and closing movement; A PLC based terminal controller for measuring and controlling the gate is developed, which realizes the automatic control and wireless communication of the local gate terminal; The gate remote monitoring platform software based on Internet of things technology is developed to realize the gate remote monitoring and engineering data management.【Result】The test results show that the system realizes the intelligent remote control of the canal gate, the gate terminal performance is stable, and has the characteristics of high measurement accuracy, strong stability and convenient operation and maintenance. 【Conclusion】It is suitable for the accurate control of the water transmission and distribution process of small and medium-sized channels in the irrigation area. |
| Key words: open channel flow measurement; flat gate; remote smart control; Internet of Things |
