The experimental approach of this investigation has as a main
object tomeasure the energy consumption ofsmart objects. For
that reason, an application in Matlab was developed for real
time energy consumption measurements. The polymeter
device, serially connected with the computer and the Matlab,
measures the electric current of connected devices, such as
XBee modules. The developed tool is generic enough so that it
can be used for a variety of consumed energy experiments and
not only for the current one. It can plot (at real-time) four
different kinds ofmeasurements such as the electric current (in
Ampere), the consumed power (inWatt), the consumed energy
(inWatt-Hour) and the total sumof consumed energy (in Watt-
Hour). One of the key features used to evaluate the described
experiments, is its capability to record measured data for
plotting them later. The described tool is depicted in Fig. 4.