 One
of the elements of the Kruger SCADA system is the
primary interface to the operator and computer. The primary interface is a graphical display (mimic) which shows
a representation of the plant or equipment in graphical form. Live data is
shown as graphical shapes (foreground) over a static background. As the data
changes in the field, the foreground is updated. E.g. a valve may be shown
as open or closed. Analogue data can be shown either as a number, or
graphically. The system may have many such displays, and the operator can
select from the relevant ones at any time.
And the power of the computer can be used
to perform complex sequencing of operations. e.g. OPEN a valve, then START a
pump, but only if the pressure is greater than 50.
The computer can be used to summarise and display the data it is processing.
Trends (graphs) of analogue values over time are very common. Collecting the
data and summarising it into reports for operators, and management are
normal features of a SCADA system.
Pictured below is a selection of screen
shots taken from the Princeton Wastewater Treatment Plant SCADA System
operators screen. These photos represent but a few of the many data screens
available to the operator which can be called up with the simple click of
the mouse. You will notice some of the screens are animated showing the
relative part of the plant equipment moving. |
