Patent ID: 8922097

Claim:
A vibrational energy harvesting apparatus comprising: a transducer ( 102 ) configured to: sense vibrational energy generated by a vibrational energy source ( 101 ), and convert the vibrational energy into a transducer signal, wherein the transducer signal indicates an electrical signal generated in proportion to the vibrational energy; an electronic amplifier ( 103 ) configured to: amplify the transducer signal, wherein the transducer signal amplified is in a form of a distorted square waveform; an optocoupler ( 104 ) configured to: receive the transducer signal in the form of the distorted square waveform, and reduce distortions from the amplified transducer signal to generate a first electrical signal form; and a pneumatic controller ( 105 ) configured to receive the first electrical signal form, wherein the pneumatic controller ( 105 ) has a piston arrangement ( 109 ) coupled with an array of piezoelectric sensors ( 106 ), wherein the pneumatic controller ( 105 ) moves and pushes the piston arrangement ( 109 ) by using the first electrical signal form in order to generate a pneumatic stress upon each piezoelectric sensor of the array of piezoelectric sensors ( 106 ), and wherein each piezoelectric sensor generates a second electrical signal form in response to the pneumatic stress, wherein the second electrical signal form is a representative of an electrical energy.