Abstract: |
Methods and apparatus are disclosed for Automated Meter Reading (AMR) systems for determining quantities of a consumed utility product including electric, gas, and water service, using wireless data transfer. To compensate for the frequency drifts of the transmitters, these methods and apparatus, with minimum pre-processing of the received data, allow for on-the-fly adjustability of receiver bandwidth by merely changing a pre-calculated weighting function. As such, it is possible to use a fixed size Discrete Fourier Transform (DFT), or in particular a fixed N-point Fast Fourier Transform, for signals of different bandwidths. |
Inventor: |
Cornwall, Mark (Spokane, WA, US); Weyrauch, Bruce (Spokane Valley, WA, US) |
Applicant: |
Cornwall, Mark (Spokane, WA, US); Weyrauch, Bruce (Spokane Valley, WA, US) |
Face Assignee: |
Itron, Inc. (Spokane, WA, US) |
Filed: |
2004-10-20 |
Issued: |
2006-04-20 |
Claims: |
22 |
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US20060085147
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1. In a utility meter reading system having multiple utility meters wirelessly transmitting utility meter data to a mobile or fixed wireless receiver, an adjustable bandwidth automated meter reading system, comprising:
(1)
(2)
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3. An adjustable bandwidth automated wireless utility meter reading system, comprising:
(0)
(3)
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4. A wireless utility data communication system for automatic utility meter reading, the data communication system comprising:
(5)
(2)
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11. In a utility meter reading system having multiple utility meters wirelessly transmitting utility meter data to a wireless receiver, a combination of elements for providing an adjustable bandwidth receiver comprising:
(3)
(5)
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16. An adjustable bandwidth wireless data communication method for use with an automated utility meter data reading system, comprising:
(4)
(6)
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21. A wireless automated utility meter data reading system, comprising:
(0)
(6)
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22. An adjustable bandwidth wireless data communication method for use with an automated utility meter data reading system, comprising:
(0)
(8)
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