This study introduces an innovative energy-harvesting system that integrates piezoelectric materials into staircase structures for sustainable urban applications. The design leverages PZT (Lead Zirconate Titanate) crystals embedded within modular “electric bricks” to efficiently convert mechanical stress from footsteps into electrical energy. The system employs a series configuration of eight PZT crystals per step, achieving a maximum output of 219.66 mW under a load of 100 N , with a voltage of 1388.5 mV. A novel feature is the use of optimized electrical connections and bridge rectifiers, ensuring efficient energy storage and conversion. Resonance analysis reveals a peak energy transfer at 90 Hz, further enhancing system efficiency. Comparative evaluations against quartz and PMN-PT (Lead Magnesium Niobate-Lead Titanate) demonstrate the superior performance of PZT in terms of sensitivity and output power. This work offers a sustainable solution for integrating renewable energy into urban infrastructure, contributing to smart city advancements and eco-friendly building designs.
Thangavel et al. (Wed,) studied this question.