PIC-based Room Temperature Control System Using Ventilation Fans

Abstract

This paper is design of PIC-based room temperature control system using ventilation fans. This design is provided with a switch for determining whether the room temperature is increased or decreased. This control system can be used to adjust the temperature of the room automatically by using a few ventilation fans on it. PIC microcontroller is the main control unit. There are two temperature sensors in this device, one for indoor temperature detection and the other for outdoor temperature detection. In two different places, two fresh air fans are placed in the room and their fan circulations are designed as output parameters. Both of these fans have the same goal. It is to lower the high temperature as soon as possible. The temperature values are displayed on six 7-segment LEDs. The controller can be used in two different ways: UP mode to reduce temperature and DOWN mode to turn up temperature. This temperature control system can be used in small area such as home, office, mini market, etc.