Dynamic Control Of Automobile Air Conditioning Vents Using Passive Infrared (PIR) Sensor

Abstract

In today’s fast-developing era human comfort along with optimal utilization of resources is becoming utmost important. People are shifting focus from manual to automation systems, which eventually helping them to perform daily tasks with ease.  The paradigm shift in automobile sector is towards system automation like automatic air conditioning system, automatic headlamps, and many more. Automatic air conditioning has become a de-facto standard on almost every car coming nowadays, thus enhancing the comfort of passengers. Modern air conditioning systems feature automatic climate control, heating, de-fogging and humidity control. These systems tend to improve passenger thermal comfort and safety. The movement of air vents, manages the direction of airflow towards passengers, which is a most important aspect of automatic climate control in the car. The proposed system will control the movement of air vents using Passive InfraRed sensor. The Passive InfraRed sensor detects the human presence in the proximity using the principle of heat radiated from the human body. The Passive InfraRed sensor sends the relevant signals to microcontroller, which in turn control the stepper motor managing the movements of air vents. Thus, the system controls the direction and speed of air flow, by detecting the presence of individuals in the car.