A Feasibility Study in Sound Energy to Electricity

Ch’ng, Benjamin Weng Khei (2018) A Feasibility Study in Sound Energy to Electricity. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

In this research, the main focus is about the conversion of sound energy to electricity. We all heard of green energy like hydro, wind and solar energy very often, however there is one form of energy that we seldom hear much about, which is sound energy. Nowadays, the uses of electronic gadgets with low power utilization, such as computer, mobile phone, television are rapidly increasing. In order to produce electricity at a faster rate, it is important to explore a new method to produce electricity. Furthermore, in this modern world the number of industries, vehicles which produce lots of sound every day. If the sound energy can be harvest and convert it into electricity, it will be very beneficial for us. This paper is about the conversion of sound to electricity conversion by using two types of methods. The first method is by using Faraday’s law electromagnetic induction, and the second method is using the piezoelectric material and the output is combine, rectified, and step up by using appropriate circuit. And the output is able to be store in side a battery and to charge a phone. To conclude this research, a continuous sound signal with at least 60 dBm can be harvested through the sound harvesting device with the appropriate step up method able fully replace the battery role.