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Abstract
We can use micro—controller system using cooling towers to achieve the level
of automation, design a low cost and high practical value of the water tower water
level controller。 The system has the water level detection, low water high water
level alarm and automatic functions such as adding water。 The design process mainly
uses the sensor technology, single chip technology, optical technology and the weak
control the strong police power technology。 Detection system using simple system
for detection of copper needles , resulting in the low and high sensitivity 。
AT89C2051 SCM system control by using the circuit of signal processing and the use
of optical coupling and weak control relays to achieve strong power to realize
automatic control of water systems.
It can automatically detect the water level, light alarm, all the work without
water cycle , to ensure better surface height is always within the context of its
structure simple, low cost high sensitivity, significant energy is used in various kind
of ideal equipment for high—level liquid storage。
Key words: SCM, Automatic monitoring, Circuit Control