Low cost, high precision measuring method base on voltage frequency conversion principle

Capturing and getting rid of unstable signal collected at site in initial and ending moment of voltage frequency conversion phase improves repeatability of measured result. Online correction for interior reference source, off line correction for external reference source and external zero compensati...

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Bibliographische Detailangaben
Hauptverfasser:	YAPENG YI, MINGGUANG WU, KEQIANG HUANG
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	Capturing and getting rid of unstable signal collected at site in initial and ending moment of voltage frequency conversion phase improves repeatability of measured result. Online correction for interior reference source, off line correction for external reference source and external zero compensation eliminate unidirectional deviation in measured results caused by dispersed parameters of components in measuring systems. Soft automatic gain control technique of combining testing sampling and formal sampling selects optimal amplification coefficient for site signal automatically so as to make site signals in different amplitudes possess favorable resolution and precision. The invention raises precision of measuring system.