Road pavements are spread over large areas and convey various possibilities for energy sources such as high thermal gradients due to their materials and colors, wind corridors, large flat areas for solar harvesting, and heavy loading from traffic. The latest advances in road energy generation have been discretely implemented and have mainly focused on photovoltaic surface applications; other studies have explored the use of piezoelectric transducers with high stresses for better energy-production performance but limited life span. This study explores the stresses on pavement surfaces from traffic loading shockwaves that yield to the natural frequency vibration a piezoelectric harvester using a cantilever array. The passing vehicles triggered 16 piezoelectric sensors divided into four embedded steel profiles. The peak electrical power obtained in the experiment was 55.6 µW with a single transducer using a tip mass of 16 g. The proposed harvester demonstrated potential for applications in micro-generation of energy with limited infrastructure modification and high endurance under traffic loading over time. Its generation capacity is around 50 mWh a month with 16 piezoelectric cantilevers installed (for a commercial traffic volume of 1500 vehicles a day), enough to power a 200 m flashing LED raised marker strip to guide drivers for lane alignment during night shifts.
This paper presents a proposal for clean energy generation through the Piezoelectricity PZT via piezoelectric cells that convert mechanical energy through the deformation of the material into electrical energy to recharge and power portable devices. This research presents a proposal for capturing mechanical energy used daily by the entire world population and the movement of the walk, where a pressure is generated in footwear and soil, is pressure is being transformed into deformation and the mechanical energy required for piezoelectric cells generate electricity. The energy generated by a piezoelectric single cell is relatively small, necessitating the use of multiple cells in a small contact area to increase the power generated by the system. The treatment of the signal generated by the cells is accomplished with piezoelectric rectification and filtering stages where the signal pulse generated is converted continuously being stored in capacitors. Ends up presenting a prototype mounted on a shoe to carry out tests and measurements of the system in order to ascertain the capacity to generate electricity from the piezoelectric effect, given that the energy generated by the system not currently used for any finally, thereby being wasted.
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