The applications of wireless sensor nodes (WSNs) are rapidly growing in civil infrastructures, yet constrained bybatteries with the short lifespan. Providing an alternative power source will undoubtedly expand the application forWSNs and other technologies such as energy harvesting. This paper presents a basic field study conducted on a cityflyover to explore the possibility of piezoelectric energy harvesting from bridge vibrations. A piezoelectric energyharvester based on Micro Fiber Composite (MFC) has fabricated. The maximum voltage and average power generatedby stainless steel PEH with surface bonded MFC patch was found to be 1.34 V and 0.784 μW respectively. Finally, thepractical application of energy harvested achieved by lighting an LED with vibration energy.
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