مهدي اسدي

Energy harvesting floor tile systems refer to technology that converts mechanical energy from human weight into electrical energy. These systems can be installed at pedestrian crossings and generate electricity from pedestrian’s footsteps to provide a sustainable and efficient energy source. This technology can be installed in public places, buildings, and subways, and can be utilized to supply energy to devices and sensors; Although researchers believe that it can also be used on a large scale to produce electricity as a new renewable source. In the present study, a floor tile footstep-driven kinetic energy harvester is designed, and its performance has been eva‎luated. The plucking-based frequency up-conversion technique has been used to convert the force of human weight into vibrational movement. In addition, the Halbach arrangement of magnets has been used to produce a stronger magnetic flux gradient and thus more output power. To eva‎luate the performance of the system, a semi-analytical model is presented. This model has been eva‎luated and validated by finite element simulations. The presented model has been used to perform sensitivity analysis in order to eva‎luate the impact of influencing variables on system performance. The result of the sensitivity analysis is the optimal values of the variables affecting the system performance, which determines the optimal system. This optimal system is considered as modules for making a 30×30 cm2 floor tile. Tile's performance has been eva‎luated under various motion conditions, including walking, very slow running, slow running, and fast running. During walking mode, it generates a power output of 0.51 W, which is equivalent to 0.57 mW/cm2. Additionally, each step on this tile generates 511 mJ of energy, equivalent to 568 mJ/cm2. During the conversion of mechanical energy into electrical energy, it is estimated that this system prevents the release of approximately 0.09 g of carbon dioxide equivalent per thousand steps, contributing to greenhouse gas reduction. Furthermore, the energy production potential of the system in a specific area of a metro station has been calculated, and its environmental benefits have been assessed. Finally, a comparison has been made between the presented system and other systems documented in existing literature.

ارتعاشات عمودي , استحصال انرژي , كفپوش كاشي , قدم‌هاي انسان , برداشت‌كننده انرژي الكترومغناطيسي , افزايش فركانس با تحريك اوليه , آرايش هالبچ

Vertical vibrations , Floor tile , Energy scavenge , Human footsteps , Electromagnetic energy harvesting , Plucking frequency up-conversion , Halbach array

Mahdi Asadi

Rouhollah Ahmadi