Inertially operated piezoelectric energy harvesting electronic circuitry
First Claim
1. An electrical energy harvesting device for harvesting electrical energy from a pulsed impact loading event, the device comprising:
- a piezoelectric element configured to be loaded and unloaded to a first load level by the pulsed impact loading event; and
a first inductor coupled to the piezoelectric element configured to be loaded and unloaded to a second load level by the pulsed impact loading event, wherein the piezoelectric element and the first inductor together operate as a first inductor/capacitor (LC) resonant circuit having a first resonance frequency and wherein the loading of the first inductor lags in time the loading of the piezoelectric element.
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Abstract
An electrical energy harvesting device for harvesting electrical energy from a pulsed impact loading event. The device including: a piezoelectric element configured to be loaded and unloaded to a first load level by the pulsed impact loading event; and a first inductor coupled to the piezoelectric element configured to be loaded and unloaded to a second load level by the pulsed impact loading event, wherein the piezoelectric element and the first inductor together operate as a first inductor/capacitor (LC) resonant circuit having a first resonance frequency and wherein the loading of the first inductor lags in time the loading of the piezoelectric element.
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Citations
24 Claims
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1. An electrical energy harvesting device for harvesting electrical energy from a pulsed impact loading event, the device comprising:
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a piezoelectric element configured to be loaded and unloaded to a first load level by the pulsed impact loading event; and a first inductor coupled to the piezoelectric element configured to be loaded and unloaded to a second load level by the pulsed impact loading event, wherein the piezoelectric element and the first inductor together operate as a first inductor/capacitor (LC) resonant circuit having a first resonance frequency and wherein the loading of the first inductor lags in time the loading of the piezoelectric element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An electrical energy harvesting device for harvesting electrical energy from a single pulsed impact loading event during which compressive loading of a piezoelectric element increases over time and the piezoelectric element structurally fails during the pulsed impact loading event, the device comprising:
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the piezoelectric element configured to be loaded and unloaded to a first load level by the pulsed impact loading event; and a first inductor coupled to the piezoelectric element configured to be loaded and unloaded to a second load level by the pulsed impact loading event, wherein the piezoelectric element and the first inductor together operate as a first inductor/capacitor (LC) resonant circuit having a first resonant frequency and wherein the loading of the first inductor lags in time the loading of the piezoelectric element. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification