Irrigation pipeline pressure controller of multi-pump water supply measurement and control system and control method

Abstract

The invention discloses a multi-pump water supply measurement and control system irrigation pipeline pressure controller and a control method, and relates to the field of agricultural machinery water-saving irrigation, the multi-pump water supply measurement and control system irrigation pipeline pressure controller comprises a water supply measurement and control system, the water supply measurement and control system comprises a control host, a sensor assembly and a plurality of irrigation pipeline pressure control assemblies, the irrigation pipeline pressure control assemblies are arranged on the water pumps respectively, and the control host controls the irrigation pipeline pressure control assemblies to work according to parameter information collected by the sensor assembly. The irrigation measurement and control network platform is connected with the water supply measurement and control system, and a first disposal plan and a second disposal plan are arranged in the irrigation measurement and control network platform; a storage module is arranged in the control host and is used for storing a first parameter threshold value, a second parameter threshold value and a first disposal plan downloaded from the irrigation measurement and control network platform; the UPS is connected with the water supply measurement and control system; a water pump starting and stopping strategy is adjusted by optimizing a control method and an algorithm so as to adjust pipeline pressure and reduce pipeline pressure fluctuation.

Description

technical field [0001] The invention belongs to the field of agricultural machinery water-saving irrigation, and more particularly relates to an irrigation pipeline pressure controller and a control method of a multi-pump water supply measurement and control system. Background technique [0002] Water-saving irrigation equipment is a kind of agricultural irrigation and drainage machinery, which is used to transport the water in the water source to the soil surface or soil layer near the root system of crops through the pipe network and irrigator after pressure filtration. When irrigating crops, the flow rate of the emitter should be kept within a certain range, and the flow rate of the emitter is related to the working pressure of the emitter, so a stable water pressure is required when the emitter is working. Pipeline water pressure adjustment can be achieved by adjusting the valve opening to change the pipeline resistance characteristics to achieve the control of the pump ...

AI Technical Summary

Problems solved by technology

Pipeline water pressure can be adjusted by adjusting the opening of the valve to change the resistance characteristics of the pipeline to realize the regulation of the working point of the pump, or directly changing the working condition of the pump by adjusting the water pump. Because changing the resistance characteristics of the pipeline consumes a lot of energy and the adjustment effect is poor, the frequency conversion and constant pressure are commonly used. Water supply mode to adjust water pressure

[0003] The variable frequency speed regulation constant pressure water supply method uses the frequency converter to adjust the speed of the pump motor to adjust the pump operating point. The existing frequency conversion constant pressure water supply control system has a limited range of regulation, and the adjustment method and control strategy are single, which is difficult to meet the adjustment needs of the irrigation system.

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