Automatic control system of bubbling irrigation and sprinkling irrigation

Abstract

The invention discloses an automatic control system of bubbling irrigation and sprinkling irrigation, which comprises a signal processor, an output control circuit, and a monitoring host, wherein the signal processor is used for receiving electric signals sent by each sensor and filtering, amplifying and driving the signals; the output control circuit is used for executing actions of a contactor, a thermal relay and a time relay of each water pump and adjusting and controlling pipeline pressure of a bubbling irrigation pump and a sprinkling irrigation pump through a frequency converter; and the monitoring host is used for performing data acquisition, filtering, processing and analysis on multi-path sensor signals after the processing by the signal processor and finishing the settings of working parameters and working modes, and uses the output control circuit to perform frequency conversion control on the bubbling irrigation pump and the sprinkling irrigation pump. The control system has the advantages of stable and reliable performance, water conservation and energy conservation, and can be widely applied to large areas of farm irrigation projects in northern provinces lack of water resources in China.

Description

technical field [0001] The invention relates to a computer control system used in agricultural irrigation, in particular to an automatic control system for spring irrigation in fruit forest areas on dry plateaus and sprinkler irrigation in grain areas. Background technique [0002] Dry plateau agricultural areas are widely distributed in various provinces and regions in northern my country, such as Pinglu, Ruicheng, Yuanqu, Yangcheng, Zezhou and other counties in southern Shanxi, Yongshou, Xunyi, Changwu, Luochuan, and Baishui in northern Guanzhong, Shaanxi , Pucheng, Hancheng, Chengcheng, Heyang and other counties, Xifeng City, Pingliang, Qingyang and other counties and cities in the east of Longdong. The geomorphological characteristics of these areas are that the plain is cut into many strip-shaped or triangular small plains by gullies, which are usually called plateaus, and the slightly taller and steamed bun-shaped plateaus in the middle are also called mao. The connect...

AI Technical Summary

Problems solved by technology

[0006] (1) The head loss of the laminar flow in the circular pipe;

[0007] (2) Head loss of turbulent flow in a circular pipe

[0069] Taking Yongquan irrigation as an example, since multiple farms use the same pipeline for irrigation, some farms open the gates to water at the same time, and some farms do not open the gates to water, so the number of gates opened varies, that is, at the same time , the number of opened wells varies, and the water output varies. If a constant speed pump is used, when the number of wells opened is small, the pipeline pressure will be high, and the water output per unit time will be large, which is not conducive to water penetration. , may also cause water to overflow the surface, resulting in flooding and waste. If too few gates are opened, the pipeline will burst due to the inability to release the pressure of the pipeline.

If too many gates are opened, the pressure of the pipeline will be insufficient, thereby reducing the water output of the gushing head

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