Controller of Heating, Ventilation and Air Conditioning for A building By using Microcontroller

Abstract

This research concerns the controller of HVAC for Building by using Microcontroller, which uses the difference between the set value and the present value building temperature. The difference is assumed to affect the compressors, Heaters, Fans in order to achieve the desired set point. The project involves protection alarm system for HVAC system, designing a controller and performing a simulation to analyses the performance of the designed controller using Bascom- AVR Language and Proteus/Simulink. The controller is based on LM35 Temperature Sensor to control the temperature building. The result shows that the controller is able to get a suitable temperature according to set point temperature and the Controller give protection for HVAC system.