US Patent No: 7,227,462

Number of patents in Portfolio can not be more than 2000

Extremely fast polling method for determining the presence of individual electric meters on a power line

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Abstract

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A "super-fast" polling method for electrical meters for outage detection. In response to a query, a large group of electric meters (M) all simultaneously transmit reply signals over an electrical distribution network using TWACS.RTM.. The signals are separated by an inbound detector (IB) at a receiving end of the network. This allows a very large number of meters to be polled in a very short period of time to determine whether or not an outage has occurred at the location of each meter. Each meter transmits a bit pattern, and bit patterns are designed so a group of meter units can transmit their patterns simultaneously over a power line (L) to the inbound detector. The presence or absence of a bit pattern in the received signal conveys the presence or absence of the associated meter in the system. The ability to transmit multiple bit patterns in parallel requires that they be orthogonal to each other. The Hadamard matrices are a class of matrices whose rows could be used as a set of bit patterns.In addition to super-fast polling for outage detection, the method of the invention can also be used to poll meters for the presence of an alarm condition, as well as for both outage detection and an alarm condition.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ACLARA TECHNOLOGIES LLCST LOUIS, MO32

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Spencer, Quentin St. Louis, MO 16 70

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EATON CORPORATION (2)
5,384,712 Energy monitoring system for a plurality of local stations with snapshot polling from a central station 62 1991
5,315,531 Energy monitoring system for a plurality of local stations with snapshot polling from a central station 59 1992
 
GENERAL ELECTRIC COMPANY (2)
4,446,462 Method and apparatus for multiple frequency transmission of information in a digital communication system 24 1982
5,903,594 Power line communications spread spectrum protocol 27 1997
 
ADVANCED CONTROL TECHNOLOGIES, INC. (1)
5,491,463 Power line communication system 112 1993
 
Electric Power Research Institute, Inc. (1)
6,278,357 Apparatus and method for implementing digital communications on a power line 69 2000
 
ELSTER ELECTRICITY, LLC (1)
5,940,009 Apparatus and method to detect tampering with an electronic utility meter 45 1997
 
ITRON, INC. (1)
5,553,094 Radio communication network for remote data generating stations 231 1994
 
LANDIS+GYR INNOVATIONS, INC. (1)
6,195,018 Metering system 186 1996
 
Midway Services, Inc. (1)
6,351,223 System and method for reading and transmitting water meter data utilizing RF signals 51 1999
 
New England Power Service Company (1)
4,559,520 Method for communication utilizing multi-mode reception 24 1982
 
PINE TREE HOLDINGS, INC. (1)
6,710,721 Radio frequency automated meter reading device 58 1999

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SILVER SPRING NETWORKS, INC. (1)
7,853,417 Methods and system for utility network outage detection 4 2007

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7.5 Year Payment $3600.00 $1800.00 $900.00 Dec 5, 2014
11.5 Year Payment $7400.00 $3700.00 $1850.00 Dec 5, 2018
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