Design Analysis of a Portable Air Quality Detection Device for Passenger Cabin Vehicles
Abstract
Passenger vehicles, such as private and public cars, can spend long periods of time indoors, especially during traffic jams or long journeys. Closed cabins with limited air circulation can potentially reduce air quality due to exposure to carbon monoxide (CO) from exhaust leaks and R-134a refrigerant from air conditioning systems. Both gases are colorless and odorless, making them difficult for humans to detect directly. Furthermore, Indonesia's high temperature and humidity can impact cabin comfort. This research aims to design an air quality detection system in a car cabin based on Arduino Uno R3 to detect CO, R-134a, temperature, and humidity gases and provide early warnings when air conditions exceed safe limits. The research method used is Research and Development (R&D) by utilizing MQ-7, MQ-139, and DHT22 sensors integrated with Arduino Uno R3. The results of sensor readings are displayed via a 20x4 LCD with a buzzer and LED as early warning indicators. The research stages include literature review, system requirements determination, hardware and software design, assembly, and functional system testing. Based on the system testing results, the Arduino Uno R3-based air quality detection device for car applications can work well according to its designed function and is able to provide early warnings when air quality exceeds a predetermined threshold.
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