The Supply Water Control System of Variable Frequency And Constant Pressure Based on Single-chip Computer
Abstract: In resident live with the water, the water supply of industry use, various waterworks, oil-field, oil depot, boiler, settle press provide hotly with constant press repair water spray pour and fire fight etc. Supply water system, the water tower of the traditional old style in as of old adoption, the high a water tank, air pressure increases to press to waits the equipments, not only cover the area to invest bigness with the equipments, maintenance difficulty, but also can't satisfy the high building, the fast water supply of the high water pressure, big discharge in etching industry,the need of fire fight.At the same time, because of supplying water the deal of with machine, adoption tradition control method, and is hard to guarantee the constant of the water supply pressure settle with solid the hour supplies water, resulting in energy wasted serious.For resolving this problem, this lesson designed a kind of new constant presses to change the frequency supplies water the auto the control the system.That system with 8031 Single-chip Computer, the calculate way of PID of the adoption improvement, the hardware part adopts the high accuracy, high and stable signal collect, deliver, handles the system, and establishes someone or other machine dialogue function, the convenience works to the system of supervise and control.For anti- interference ability that increases system with the stability of the movement, the system makes use of a watchdog for, realizes single a machine system electric circuit, power supply breaks down to supervise and control with reply an electric circuit, making the system is more the tightly packed.This text expatiated the control of the system requests, analyzing the work principle of the system with work process, gave each parts of hardwares design process and its related electric circuits, software design process, control the calculate way realizes flow chart, emphasized to explain the calculate way of PID in the single a work for on boardly realizing method, at the same time expatiating system characteristics, experiment proof this is a kind of economic practical forerunner control technique.
Key Words: Single-chip Computer, variable Frequency, PID the supply water control system of variable frequency and constant pressure
