Abstract
As people's standard of living gradually increased, the requirements of water supply systems are increasingly higher .Most of the traditional water supply system using water tower, tank or high pressure tank pressurization equipment.Traditional control method have some shortcomings such as lower control accuracy, higher energy consumption , and it certainly not be seasoned with people's increasing standard living standard .To save energy, improve the quality of water supply systems, this design uses PLC technology to achieve water level autocontrol system of water tower, this control system has higher control precision, and make the hydraulic pressure regulate of user be more in time and efficiency, regulating fluctuations be smaller, And also ,this control system have some advantage such as a simple structure, low cost, saving energy and so on.
Keywords：PLC;water level of water tower ;automatic control
