17 Feb
2007
17 Feb
'07
4:38 p.m.
"Witchy" <witchy at binarydinosaurs.co.uk> wrote:
One of my customers uses SCADA to control some of
their machinery and I
had no idea the name itself was that old - what's the history of it?
SCADA dates back to at least the late 1930's in the electrical generation
and distribution field.
The 40's-era equipment I have seen include 807-based carrier transmitter
units and receiver units based around dozens to hundreds of 6SN7's.
(Today we would call these the modulator and demodulator parts of
modems.) Recording done with chart recorders, and centralized computation
via integrating meters (visualize as marbles in a barrel and
you'd be exactly on.)
Get me started and I'll show you how a pinball machine can be
converted into a multichannel analyzer :-).
Tim.