Evaluación del Rendimiento de un Dispositivo de Medición de Tensión y Corriente

Abstract

New technologies offered in the market try to make a better use of electric energy, but it is always necessary to obtain energy consumption data in order to make plans oriented to its rational and efficient use. This article presents the design and implementation of a prototype capable of indirectly taking measurements of RMS voltage and current values from a residential-type electric installation. The objective is to monitor and present the values of these parameters to a subscribed user in real time. The prototype is based on an Arduino embedded system that is in charge of handling voltage and current data given by two sensors which are especially adapted to generate analog impulses. Hence, the Arduino system is synchronized with an LCD touchscreen that serves as an interface to visualize the variables measured in real time. In particular, the measuring device has an accuracy error lower than 1.34% in voltage and 1.5% in current, compared to a reference instrument used in experimental testing that defines the optimal operation of the prototype.