Energy harvesting for wireless sensor operation and data transmission
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Abstract
A device for powering a load from an ambient source of energy is provided. The device includes an energy harvesting device for harvesting energy from the ambient source of energy wherein the rate energy is harvested from the ambient source of energy is below that required for directly powering the load. A storage device is connected to the energy harvesting device. The storage device receives electrical energy from the energy harvesting device and is for storing the electrical energy. A controller is connected to the storage device for monitoring the amount of electrical energy stored in the storage device and for switchably connecting the storage device to the load when the stored energy exceeds a first threshold. The system can be used for powering a sensor and for transmitting sensor data, such as tire pressure.
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Citations
99 Claims
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1-76. -76. (canceled)
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77. An electronic system, comprising:
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a rotating part;
an energy harvesting circuit mounted on said rotating part, said energy harvesting circuit for harvesting mechanical energy from motion of said rotating part and converting said mechanical energy into electricity; and
a radio frequency communications device mounted on said rotating part and connected to receive electricity derived from said energy harvesting circuit for powering said radio frequency communications device. - View Dependent Claims (78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99)
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Specification