Post on 09-Aug-2020
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The Internet of Things and the decline of western civilisation
Mike Nash UK Head of Delegation, ISO/IEC JTC1/SC 27
An Apology
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The Internet of Things Lessons from History
The Internet of Things and the decline of western civilisation
Look at Picture 1
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Look at Picture 2
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What’s unusual?
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Look at the signal and the points
This is a semi-automatic signal An automatic signal is always green if there is no train
in the next section There is no train in the next section
Do you want a clue?
The Clue
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Recap
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Safety
If this signal (G3) fails, what does the driver do? Driver can proceed in accordance with rule book Points must be blocked Staff member on platform
A great deal of nuisance and delay Increased risk of runaway
Mitigation by standard solution Dual filament bulbs
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Dual Filament Bulbs
Standard Railway Practice
On LT, normally only main filament is (was) lit
If main filament fails, second filament automatically switches on Lower light intensity Also warning light in signal box comes on Drivers should notice and report lower intensity
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Early LT Telephones
1939 First direct dial LT telephones
1940 Dial “INF” for Central Information Desk (Leicester Square)
1948 Experimental Breakdown Message Recorder introduced - dial 48 (abandoned 1949)
1951 Information System Message Recorder introduced - dial 19
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Modernisation
1962 Central Information Desk moves to 55 Broadway; “INF” connects to “Information System Assistant”, “19” still connects to recorded message.
1973 “INF” changes to All Figure Number (AFN) ”463”
1979 Information System Assistant number changes to ”908”
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Programme Machines
1958 First Programme Machine Controlled Signals at Kennington
1965 “Electronic” Programme Machines Permitting greater complexity
1971 Golders Green Signal Box Closed; Signal G3 becomes Programme Machine Controlled Supervised from Northern Line Control Room,
Cobourg Street, Euston
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The moral of this story...
What can we learn from this Use Case? There’s nothing new about the Internet of Things There is something different about the Internet of
Things Complexity is always a friend of failure Security is also a friend of failure The environment will change in ways you did not
anticipate What else ... ?
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Want To Know More?
Get a Life!
Factual information from Mike Horne’s web site M A C Horne FCILT MIRO http://www.metadyne.co.uk/Research.htm
The story came from my Uncle Frank Former LT Signalling Engineer
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Still Interested in the Decline of Western Civilisation?
Come to my Workshop!
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Questions?
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Thank You
Mike Nash Gamma Secure Systems Ltd
mnash@gammassl.co.uk http://www.gammassl.co.uk/