Adaptive adjusting system for water-fertilizer irrigation pressure of terraced field based on sensor network

Abstract

The invention relates to an adaptive adjusting system for the water-fertilizer irrigation pressure of a terraced field based on a sensor network. The adaptive adjusting system comprises water-fertilizer blending equipment and wireless sensing nodes respectively arranged at the front, middle and rear parts of a main irrigation pipeline, wherein each wireless sensing node comprises a microcontroller, a first wireless communication module, an internal pipe pressure sensor and an external pipe pressure sensor; the external pipe pressure sensor comprises a shallow layer humidity sensor, a middle layer humidity sensor and a deep layer humidity sensor; the first wireless communication module is wirelessly matched with the second wireless communication module arranged at the water-fertilizer blending equipment; the water-fertilizer blending equipment executes output through a water pump frequency changer; the wireless sensing nodes are used for uploading internal pipe pressure data and the humidity data of a shallow layer, a middle layer and a deep layer to the water-fertilizer blending equipment; and the water-fertilizer blending equipment outputs a control model based on a wave manner, executes adaptive adjustment and controls the water pump frequency changer to execute output. According to the adaptive adjusting system, the integral uniform fertilization and effective irrigation ofterraced field crops are realized.

Description

technical field [0001] The invention relates to the field of intelligent agricultural facilities, in particular to a sensor network-based self-adaptive adjustment system for water and fertilizer irrigation pressure in terraced fields. Background technique [0002] Water and fertilizer are indispensable factors for the growth of crops. The integrated technology of water and fertilizer is a new technology that integrates agricultural irrigation and fertilization. It dissolves solid instant fertilizer in water and uses water to carry fertilizer for irrigation. It has high efficiency, With the advantages of precise control, consumption saving, time saving and energy saving, it has been recognized as the best technology in the world to improve the utilization rate of water and fertilizer resources. The advantages of water and fertilizer integration technology are as follows: (1) Water saving: Traditional crop irrigation generally adopts flood irrigation and border irrigation, whi...

AI Technical Summary

Problems solved by technology

There are two problems in irrigation of terraced fields with water and fertilizer: First, because the water pressure is related to the vertical depth of the water body, the water pressure in the pipe at the bottom of the terraced field is the highest, which will directly cause more water and fertilizer to be sprayed out from the lowest layer of the terraced field. However, less water and fertilizer are sprayed from the highest layer, and the overall fertilization of terraced crops is uneven, resulting in poor consistency of crop growth; If it is too small, it will cause the top terraces to be unable to be irrigated effectively

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