Water Level and Temperature Control System

Abstract

The aim of this system is to develop water level and temperature controlling system. The system can control not only water amount but also water temperature with an appropriate value. To construct this system, PIC16F84A microcontroller is used. The main aspect of this system is automatic control of filling tank using level switch sensor. It can be done by means of the position sensor which senses the position of the copper rod. The operations are measuring, heating and filling. Thermistor is used for temperature sensor. The user sets the required temperature by using manually preset control. To fill the water, AC motor is used. The circuit is activated by a start switch and the system is automatically filled the tank and stopped when it reaches the high level. When the water is reached the low level, this system opens heating coil to control set temperature of water. LEDs which use in this circuit are common output types. If water temperature is equal to the setting values, system turns on siren alarm. If water level is high, system is automatically closed to fill water into tank. This system is implemented by using Pic Basic Language.