Self-adaptive control method for water pump

Abstract

The invention discloses a self-adaptive control method for a water pump. By utilizing a programmable logic controller and a sensor, a performance curve and a power curve of the water pump are mastered, continuous correction is performed in daily operation, and the precision is improved. After the learning of a controller is finished, the situations such as the performance, a running state and thelike of the water pump can be derived reversely according to a learning result in the self-adaptive control method for the water pump. If output power is obviously deviated compared with a normal value, the situation that the water pump has a problem can be judged, so that a comprehensive monitoring function for the water pump is realized. Meanwhile, the running state of the water pump can be calculated out according to the learning result. When it is inferred that the water pump can timely stop running in a state of doing idle work, electric energy loss is reduced, so that the purpose of energy conservation is achieved. According to the self-adaptive control device for the water pump, a pressure of a water outlet pipeline of the water pump can be accurately determined; the function of anoutlet pressure transmitter is completely replaced; and the technical problem that normal work of a water supply system is influenced due to a fault of the pressure transmitter in the prior art is solved.

Description

Technical field: [0001] The invention relates to the field of electricity, in particular to water pump control technology, in particular to a water pump self-adaptive control method and device. Background technique: [0002] In the prior art, the water supply system widely uses pipe network pressure transmitters to detect user pressure, and then performs PID calculation with the pressure value given by the user to control the output frequency of the frequency converter, so as to achieve the purpose of constant pressure control. Since the pressure transmitter of the pipe network is installed on the unit, the damage rate is very high. Usually, a complete set of water supply equipment will affect the normal work only because of the failure of one pressure transmitter. Moreover, when the pressure transmitter fails, the site cannot be controlled, and the system can be started and shut down manually, and the system water supply pressure cannot be stabilized, which affects the wate...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a water pump self-adaptive control method, said water pump self-adaptive control method is to solve the technical problem in the prior art that the normal operation of the water supply system is affected by the failure of the pressure transmitter

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