基于PLC的恒压供水系统设计

Design of Constant Pressure Water Supply System Based on Plc

随着科学技术的迅猛发展,传统供水方式存在的供水不稳定、能耗大等缺点日益突出。为了提高供水质量,设计了一种基于PLC的恒压供水系统,它集先进的自动化控制技术、变频调速技术、以及通信技术于一体,采用PID闭环控制方式,大大提高了供水的稳定性和可靠性。本系统的基本原理是用压力传感器检测管网中的水压,把测得的压力反馈至PLC内部的PID模块进行计算,得出偏差信号后调整变频器的输出频率,从而调节水泵的转速,让管网的水压稳定在设定值附近。

With the rapid development of science and technology,the traditional water supply mode of water supply instability,energy consumption and other shortcomings become increasingly prominent.In order to improve the quality of water supply,this paper designs a constant pressure water supply system based on PLC,which integrates advanced automatic control technology,frequency conversion speed control technology and communication technology in one,using PID closed-loop control mode,greatly improving the water supply stability Sex and reliability.The basic principle of the system is to use the pressure sensor to detect the water pressure in the pipe network,the measured pressure feedback to the PLC inside the PID module to calculate the deviation signal to adjust the frequency of the inverter output frequency,thus adjusting the pump speed,So that the pipe network pressure stability in the vicinity of the set value.