Design and Analysis of a Metal Detection System Based on an Inductive Sensor

Resumo

This article presents the development and analysis of a metal object detection system utilizing an inductive sensor. The project covers everything from the fundamental operating principles of inductive sensors to their practical application within a circuit controlled by an ESP32 microcontroller. A detailed noise analysis of the system was conducted, comparing theoretical quantization noise with experimentally measured noise. This allowed for the identification of predominant interference sources. The results demonstrate the system's effectiveness in metal detection and quantify the measurement errors, thereby validating the application of inductive sensors in industrial automation and process control systems.