Power generation utilizing tire pressure changes
First Claim
1. A method of powering one or more electronic devices in a tire monitoring system, comprising:
- a) rotating a tire on a surface to generate pressure changes within said tire, wherein said pressure changes have a frequency in the range of about 1 Hz to about 100 Hz;
b) converting said pressure changes into electrical energy with a transducer; and
c) utilizing said electrical energy to power said one or more electronic devices in said tire monitoring system.
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Accused Products
Abstract
A method of powering one or more electronic devices in a tire monitoring system using a tire pressure based energy scavenger is provided. With this method, a tire is rotated on a surface to generate pressure changes within the tire. These pressure changes are then converted into electrical energy with a transducer and the energy is stored. The electrical energy or stored electrical energy can then be used to power one or more electronic devices in a tire monitoring system, such as a tire pressure sensor, temperature sensor, acceleration profile sensor, and/or a tire wear monitor. A tire monitoring system with a tire pressure based energy scavenger is also provided.
59 Citations
29 Claims
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1. A method of powering one or more electronic devices in a tire monitoring system, comprising:
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a) rotating a tire on a surface to generate pressure changes within said tire, wherein said pressure changes have a frequency in the range of about 1 Hz to about 100 Hz; b) converting said pressure changes into electrical energy with a transducer; and c) utilizing said electrical energy to power said one or more electronic devices in said tire monitoring system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tire monitoring system with a pressure-based energy scavenger comprising:
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a) one or more electronic devices, wherein said devices are selected from the group consisting of a pressure sensor, a temperature sensor, an acceleration profile sensor, and a tire wear monitor; and b) a transducer, wherein said transducer converts pressure changes generated from rotation of a tire on a surface into electrical energy, wherein said transducer operates at a frequency of between about 1 Hz and about 100 Hz, and wherein said transducer supplies said electrical energy to said one or more electronic devices to power said one or more electronic devices. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A tire monitoring system with a pressure-based energy scavenger comprising:
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a) one or more electronic devices, wherein said devices are selected from the group consisting of a pressure sensor, a temperature sensor, an acceleration profile sensor, and a tire wear monitor; and b) a transducer, wherein said transducer converts pressure changes generated from rotation of a tire on a surface into electrical energy, wherein said transducer is selected from the group consisting of a spiral of piezoelectric material supported on a flexible diaphragm, a piezoelectric diaphragm comprising a weight for altering the resonance frequency of said piezoelectric diaphragm, and a variable capacitor transducer, and wherein said transducer supplies said electrical energy to said one or more electronic devices to power said one or more electronic devices.
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Specification