Voltage plays a crucial role in the efficiency of a piezoelectric energy harvesting system in smart wearables. Piezoelectric energy harvesting involves converting mechanical vibrations or deformations into electrical energy using piezoelectric materials. These materials generate voltage in response to mechanical stress, and this voltage is a key factor in determining the overall efficiency of the energy harvesting process. Here's how voltage influences the efficiency of such a system:
Output Power Generation: The voltage generated by the piezoelectric material is directly proportional to the amount of mechanical stress or vibration it experiences. Higher mechanical stress results in higher voltage output. The voltage generated across the piezoelectric material is used to drive a current through an external load, which then results in power generation. Higher voltage levels lead to increased output power, which is