Electricity meter with multiplexers for monitoring measurement c

Details Electricity meter with multiplexers for monitoring measurement c Electricity meter with multiplexers for monitoring measurement c

1998-01-21

2000-06-20

Wachsman, Hal

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

702 60, 702 64, 324118, 324140R, G01R 1700

Patent

active

060788704

ABSTRACT:
An electricity meter includes measurement channels. In order to permit an extensive self monitoring of the measurement channels, input signals, in particular detected current signals and voltage signals, are detected in a double manner through different signal channels with sigma delta modulators. A plausibility monitoring of the detected signals takes place in a following digital signal processing device, wherein a corresponding error signal is generated depending on the type of malfunction or signal deviation.

REFERENCES:
patent: 5301121 (1994-04-01), Garverick et al.
patent: 5345409 (1994-09-01), McGrath et al.
patent: 5485393 (1996-01-01), Bradford
"A Programmable Mixed-Signal ASIC for Power Metering", Garverick et al., IEEE, 1991, pp. 2008-2015, (Dec. 1991).

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