DETECTING AND MONITORING NOISE POLLUTION WITH ARDUINO UNO: AN INNOVATIVE APPROACH

Abstract

Noise pollution is a serious environmental and health issue that affects millions of people around the world. In this comprehensive paper, we present a low-cost and easy-to-build noise detection system that can effectively measure the sound intensity in an environment and alert the user when it exceeds a certain threshold. The system is ingeniously composed of microphones connected to sound modules, an LCD display, and LEDs. The two strategically placed microphones capture sound waves, convert them into electrical signals, and feed them into the module. The sound sensor module, which is ingeniously based on the operational amplifier, compares the sound signal with a setpoint value and outputs a digital signal indicating whether the sound level is above or below the threshold. The LCD display shows the sound level in decibels, and an LED glow when the sound is too loud, providing a visual cue. The system can be powered by a 5V DC source or any other system with a USB port, and it can be easily calibrated using a potentiometer. We demonstrate the functionality and performance of our system across various sound environments, showcasing its versatility. We also discuss the potential applications and limitations of our system, along with some prospective improvements, offering a roadmap for future development.