AC collection apparatus

The utility model discloses an AC collection apparatus, comprising a DSP processor and a single-chip microcomputer connected with the DSP processor, wherein the AC voltages of A, B and C phases are divided by precise resistors, then boosted from a 1.65V reference voltage to a DC voltage signal with...

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Bibliographic Details
Main Authors HU JINBO, DU MENGMENG, ZHANG HAITAO, YE YUCHENG
Format Patent
LanguageChinese
English
Published 10.04.2013
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:The utility model discloses an AC collection apparatus, comprising a DSP processor and a single-chip microcomputer connected with the DSP processor, wherein the AC voltages of A, B and C phases are divided by precise resistors, then boosted from a 1.65V reference voltage to a DC voltage signal with an effective value from 0.7V to 1V, then processed to be a voltage value from 0V to 3.3V through an operation amplifier, and output to the A/D conversion input port of the DSP processor; the AC currents of A, B and C phases pass through current transformers, then boosted from the 1.65V reference voltage to a small DC voltage signal with an effective value from 0.7V to 1V, then processed to be a voltage from 0V to 3.3V, and output to the A/D conversion input port of the DSP processor; and simultaneously the small DC voltage signal with the effective value from 0.7V to 1V, converted from the A or C phase AC voltage is input into a hysteresis comparator and output to the CAP port of the DSP processor. The AC collectio
Bibliography:Application Number: CN20122562270U