Condicionamento de Sinais de Sensores Piezoelétricos: Detecção de Eventos em Sistemas Mecânicos

Abstract

This study investigates the use of wafer-type piezoelectric sensors for signal conditioning and preparation to enable their integration with microcontrollers. The research is based on mathematical models and circuit simulations to assess the feasibility of detecting mechanical events in vibration systems. Mechanical waves generated in different scenarios are modeled as Rayleigh waves and analyzed in both time and frequency domains.

Validation was conducted through the design of amplifier circuits that condition signals within the voltage specifications of the microcontrollers used, ensuring data integrity even under adverse conditions. Simulations and experimental trials evaluated aspects such as energy efficiency, circuit robustness, and signal quality.

The results suggest that the proposed approach is feasible, showing potential for applications in contexts such as cybersecurity and mechanical event monitoring. The simplicity of the circuit and the use of readily available components make this approach suitable for researchers and technical enthusiasts.