Load side voltage sensing for AMI metrology

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United States of America Patent

PATENT NO 8212687
APP PUB NO 20080088297A1
SERIAL NO

11901292

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Abstract

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Disclosed are apparatus and methodologies for providing improved functionality of a meter in a 2-way communications arrangement, such as an Advanced Metering System (AMS) or Infrastructure (AMI). More particularly, the present technology relates to methodologies and apparatus for providing load side voltage sensing for utility meters which preferably are operable with remote disconnect features in an Advanced Metering Infrastructure (AMI) open operational framework. The present subject matter provides enhanced capabilities resulting in improved functionality, increased safety, and greater economy vis-à-vis fraud detection for individual metrology components in an open operational framework. Meters per the present subject matter utilize a detection circuit, which is situated generally downstream of a remote disconnect functionality. Such detection circuit is able to sense whether voltage exists or doesn't exist at such relatively downstream, or load side location. Providing such functionality allows for: (a) verification that a remote disconnect switch did open subsequent to an instruction or command to do so, (b) identification of possible user fraud, as would possibly be reflected by the presence of voltage at a time when the remote disconnect switch is open, (c) verification that the remote disconnect switch did re-close after having been given an instruction or command to close, and (d) verification of lack of voltage present before re-closing such remote disconnect switch, which serves an important safety feature.

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Patent Owner(s)

Patent OwnerAddress
ITRON INC2111 N MOLTER ROAD LIBERTY LAKE WA 99019

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lancaster, Andrew Seneca, US 12 112
Makinson, David N Seneca, US 13 395
Swanson, Scott Walhalla, US 13 252

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