Development and Testing of a Low Cost Ultrasonic Leak Detector

Abstract: This study focuses on the development of an ultrasonic leak detection system utilizing the Arduino Nano 33 BLE Sense Rev2 board. The research aimed to create a compact and cost-effective solution for identifying leaks in high-pressure pipes. Algorithms were designed to enable lossless recording and processing of sound data captured by the onboard MEMS microphone. Key signal processing techniques, including the implementation of an IIR high-pass filter and RMS calculation, were employed to detect ultrasonic frequencies associated with leaks. The system was tested on a pressurized pipe setup, demonstrating its ability to accurately identify leaks. The results highlight the system's effectiveness, with its compact design and low cost making it suitable for a wide range of industrial applications. This research contributes a practical and accessible tool for leak detection, offering potential benefits in industrial applications.