Abstract: In order to mitigate overheated interior of a vehicle parked in the hot summer sun and thereby to make the entering into the vehicle more comfortable, microcontroller man柑ged module for automatic ventilation of vehicle interior is made. The module is implemented using a microcon氟roller as a central logical unit and a series of sensors which provide sufficient data to ensure functional, but also efficient, reliable and safe ventilation. The ventila氟ion process is performed by opening vehicle windows slightly, which enables air to circulate. Microcontroller controls the position of the windows autonomously and independently of the driver𠏋 presence, following pre查efined algorithm that uses sensors data obtained from the vehicle𠏋 surroundings. Besides temperature, the most important factors to ensure quality implementation of ventilation are detected move柒ents around the vehicle, the presence of precipitation and other. This paper shows the components, their pur殆ose and capabilities, advantages and disadvantages, as well as potential implementations and upgrades. The test results give insight into utilization options of this module and its usefulness. This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer.

Keywords: Self-Regulated Automatic Ventilation, Vehicle Interior, Microcontroller, three terminal voltage regulator.