Abstract:
The application of measurement and control gate in irrigation area is highly important to improve the utilization efficiency of irrigation water and promote information construction. According to different channel categories in the Qiyi irrigation district, the integrated gate of various specifications is designed. The gate body adopts an integrated and double guide rail structure which is equipped with a DC motor to drive the gate opening and closing to control the discharge. The rotary encoder records the opening degree of the gate, the radar water level meter collects the water level of the upstream and downstream of the gate, and the flow rate of the channel is calculated by the principle of gate outflow. The gate monitoring and control terminal is designed to display the motor running state and channel water level and flow information, which is transmitted to the management station and water agencies remotely through the 4GTD-LTE broadband wireless communication private network. The wind and photovoltaic hybrid power supply mode is adopted to supply energy to the integrated gate of measurement and control, which can meet the electricity demand of at least 10 days without wind or sunlight. The application of integrated gate has changed the way of reading the flow curve of weir level in irrigation area, improved the accuracy of flow measurement and reduced the waste of irrigation water.