A water and fertilizer integrated machine based on multi-channel flow control and its flow control method

Abstract

The invention discloses an integrated water and fertilizer machine based on multi-channel flow control and a flow control method thereof. The flow is controlled by digital regulating valves of variouswater channel, so that the fertilizer preparation ratio is controlled. Water and multi-channel water-soluble fertilizers simultaneously enter a water pump, are uniformly mixed in the water pump and finally reach plant roots by virtue of a drip irrigation zone. The structure has high fertilization efficiency, and spent time is short. Multiple types of fertilizers are simultaneously applied, so that the fertilizers are fully and uniformly mixed to reach the crop roots, and the fertilizer absorption efficiency of the crops is improved. Non-uniformity of different plant fertilizers in the fertilization process is avoided, and the condition that quality differences of crops are caused due to non-uniform growth vigor of different plants is avoided. An adaptive harmonic ratio control algorithm is adopted, and the control algorithm is capable of realizing unity of flow control rapidness and following performance. When flow of a main pipeline is subjected to disturbance, flow of branch pipelines rapidly follows, and the condition that the flow ratio of mismatched can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of agricultural equipment, and in particular relates to a water and fertilizer integrated machine based on multi-channel flow control and a flow control method thereof. Background technique [0002] Water and fertilizer integration technology is a new agricultural technology that integrates irrigation and fertilization. Generally, drip irrigation technology is used to infiltrate the roots of plants with water and water-soluble fertilizer in drops by laying drip irrigation belts. Water-soluble fertilizer is a compound fertilizer that can be quickly and completely dissolved in water. It is easy to be absorbed by crops and has a high utilization rate. It is an ideal fertilizer for realizing integrated water and fertilizer irrigation. The research of water and fertilizer integrated machine is mostly concentrated in the fields of timing control, logic control, switch control and so on. In agricultural production...

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the existing water and fertilizer integrated machine, such as low fertilization efficiency, inaccurate fertilizer ratio, and few functions, the present invention proposes a water and fertilizer integrated machine based on multi-channel flow control and its flow control based on full closed loop and multi-flow ratio control. method

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