SIGNAL CONVERTING APPARATUS OF POWER METERING SYSTEM, POWER METERING SYSTEM AND METHOD FOR SIGNAL-CONVERTING IN POWER METERING SYSTEM
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United States of America Patent
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Issued Date -
Jul 11, 2013
app pub date -
Nov 15, 2012
filing date -
Nov 18, 2011
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Abandoned
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Abstract
The present invention relates to a signal converting apparatus of a power metering system, a power metering system and a method for signal-converting in a power metering system. In accordance with one embodiment of the present invention, there is proposed to a signal converting apparatus of a power metering system including a frequency shift unit for shifting a frequency(s) of at least one signal of sensed current and voltage signals by a shift frequency(s) so that the current and voltage signals have different frequency bandwidths, a signal coupling unit for coupling the current and voltage signals having different frequency bandwidths into one signal and an analog-digital convert unit for converting an analog signal coupled as said one signal into a digital signal(s). And also, a power metering system including the same and a method for converting a signal of the power metering system are proposed.
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