Energy harvesting for wireless sensor operation and data transmission
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Accused Products
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
91 Claims
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1-75. -75. (canceled)
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76. An energy harvesting system, comprising:
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a wheel;
a PZT mounted on said wheel;
a circuit for harvesting energy from said PZT, wherein said circuit comprises an element having an impedance approximately matching impedance of said PZT; and
a sensing module connected to said circuit, said sensing module including a sensor and a circuit for wirelessly transmitting sensor information. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91)
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Specification