Abstract
The water supply is a relations national economy and the people's livelihood important industry. Along with society's development and living standards' enhancement, proposed to the urban water supply a higher request, needs to satisfy promptly, accurate, the security guarantees sufficient water supply, if still continued to use the artificial way, the labor intensity is big, the working efficiency is low, the security safeguards with difficulty, for this reason must make the water tank water monitor automated system's transformation. Because the programmable controller (PLC) its redundant reliability and the high performance-to-price ratio obtains the widespread application in the industrial control. This article in view at present the quite popular control technology, constituted the water tank permanent water level control system using PLC and the sensor. After the transformation water tank water level autonomous system, realizes the water tank water level automatic control system, the long-distance monitoring, realizes unattended.
key word: Programmable logical controller (PLC) water tank water level automatic control
