24-01-2013, 11:03 AM
WATER LEVEL INDICATORS
1WATER LEVEL.pdf (Size: 23.03 KB / Downloads: 27)
ABSTRACT :
Indicator and controller of water level is a equipment that can monitor the water
levels in the reservoirs. A LED indicator display 16 levels of water in the tank.
A detector that used a water level sensor is aluminum wire structure combined
with electrical switches. Unit encoder and decoder units are used for water-level
data processing, where the output of the decoder is used to activate the water
level indicator, and used as an input unit controller. As a controller working the
water pump driven by a 555 timer IC. During testing, the system indicate that
when the water level is fully charged, all green LED lights, and when the tide
LED is dwindling down, and vice versa when the water level higher then the lit
LED growing up. When water levels drop to below ¼ of the height of the tank,
then the LED-Red-colored LED indicator lights and LED-green LED will die,
which indicates the water level in critical condition/almost empty. If the water
level drops to below the level of ¼, the pump will work to fill the water tank,
and vice versa when the water level close to full, then the water will stop
charging.