VERSATILE MULTIFUNCTION ELECTRICAL DIGITAL METER BASED ON PERSONAL COMPUTER

Luis Reyes Rosales Montero

Abstract

The objective of this work is to describe a versatile multifunction electrical digital meter based on personal computer; it has been developed for incorporation into a laboratory testing system. The meter uses two 12-bit A/D. The A/Ds are connected to parallel printer port of PC. The work was developed for Measurement of power. Using a programming language Turbo C++ was calculated: rmsVolts, rmsAmps, volt-amps, Reactive Power, Phase angle, frequency, Active power, watts-hour, resistance, capacitance and period. The values are shown at the monitor as a 4-digit display. The accuracy of meter is within 0.1%. The virtual power meter has a virtual two-channel oscilloscope. The meter was developed to senses power supply of electronic devices. (TV, PC) and electromagnetic device.

Keywords

Virtual Power Meter, Power Factor Meter, Electrical Digital Meter, Digital Oscilloscope, and Frequency Meter

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IMEKO-TC4-2001-009.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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