Self-powering headset, devices and related methods
In one aspect, the invention relates to a headset that includes an element that generates energy in response to forces. The headset includes at least one vibratable piezoelectric element; a first circuit element in electrical communication with the at least one vibratable piezoelectric element; and a signal processing element, the signal processing element disposed within the headset and at least partially energized by mechanical changes in the vibratable piezoelectric element.
1. A piezoelectric headset power source, the headset having a headset housing, the headset power source comprising a mounting surface, the mounting surface sized to fit within the headset housing; a plurality of cantilevers, the plurality of cantilevers substantially secured to the mounting surface, the plurality of cantilevers arranged such that the plurality of cantilevers can vibrate and produce an aggregate electric charge flow, wherein the plurality of cantilevers are arranged in overlapping stepped layers of varying lengths; and an energy harvesting circuit, the energy harvesting circuit comprising a first circuit element, the first circuit element receives the aggregate electric charge flow and converts the aggregate electric charge flow such that a current suitable for powering the headset is generated.
2. The headset power source of claim 1 wherein each of the plurality of cantilevers comprises a polycrystalline lead magnesium niobate-lead titanate piezoelectric material.
3. The headset power source of claim 2 wherein the polycrystalline lead magnesium niobate-lead titanate piezoelectric material has a density that ranges from about 7.6 grams/cc to about 8.0 grams/cc.
4. The headset power source of claim 2 wherein the polycrystalline lead magnesium niobate-lead titanate piezoelectric material has a density of about 7.8 grams/cc.
5. The headset power source of claim 2 wherein the polycrystalline lead magnesium niobate-lead titanate piezoelectric material has an average grain size of about 4.3 microns.