CARLO GAVAZZI POWERSOFT, Инструкция по эксплуатации

Страница: 58 / 74

PowerSoft
PowerSoft – Instruction manual
58
an increase of the consumptions is a general trend or if it happens only in
particular days of the week.
In the database some anomalous data could be present. They can be due to
temporary problems of the instrumentation, of the network, of the
monitored system or plant: those measurements are real but they can affect
the statistical analysis. It is possible to filter these anomalies to get a more
homogeneous set of data.
The available filter is a “median filter” with selectable steps of 3, 5, or 7
data. It means that every 3-, 5-, or 7-data sequence of the original trend, the
value of the central datum will be replaced by the median of the same
sequence. This filter cuts the isolated peaks but preserves the trends
(increasing, stable, or decreasing): the higher the step, the more
homogeneous the final trend. The aim of this filter is only to clarify and
highlight the trend of the consumptions. It is to be used only for this
purpose and not to carry-out further analysis or calculations.