Patent ID: 8480374

Claim:
An auto-control system on improving pumping system performance comprising a pump, a pool, pipelines, a parameter setting module, a water level measuring module and a system control module, characterized in that: a) said parameter setting module configured to preset a characteristic parameter and a control parameter of said pump and said pipelines; b) said water level measuring module configured to measure, determine and compute a high level pool water level, a flow demand trend and a system instantaneous flow at regular intervals; said water level measuring module further sending data obtained from said measuring, determining and computing to said system control module; and c) said system control module configured to receive said data sent by said water level measuring module that is measured and computed, and controlling the operation of said system based on said data; wherein said system control module is implemented by a PLC; an input module of said PLC receiving a flow demand signal, an operation parameter of a frequency converter and a pump switch and stop signal from said pumping system; an output module of said PLC sending an operation frequency signal to said frequency converter and a timely operation parameter and a fault protection parameter to a touch screen; said frequency converter controlling the rotation speed of a pump motor according to said operation frequency signal from said PLC and outputting a real-time operation parameter signal to said PLC; said touch screen displaying said real-time operation parameter, a preset parameter and system protection and fault information, and sending data to a host computer; an inductive measuring loop feedbacking said flow demand signal of said pipelines to said PLC.