Cosmic rays... that's the ticket
Cosmic rays... that's the ticket
A few decades ago, while working on classified programs which were pushing the envelope for computer-controlled systems, my coworkers and I would jokingly attribute anomalous system behavior to "cosmic rays", when no other explanation was apparent. The automotive world now seems to have also gained an appreciation for these particles from the Great Beyond:
Cars vs. cosmic rays
which links to this interesting anonymous email and related docs:
Submission on Sea-Level SEU Phenomenon
Cars vs. cosmic rays
which links to this interesting anonymous email and related docs:
Submission on Sea-Level SEU Phenomenon
For the really critical stuff, divide the redundant channels into redundant lanes that use dissimilar processors, dissimilar compilers, dissimilar control/monitor functions and dissimilar sensors, with a "last ditch" analog backup mode. For radiation environments, consider rad-hard circuits. For hopeless cases, where KHz will do, there's always fluidic logic.MSimon wrote:Triple redundancy and voting for safety critical subsystems.
Oh you mean Tiny ElectroMagnetic Particles Emitting Secret Things [wikipedia] ?MSimon wrote:Are you even allowed to mention that?KitemanSA wrote:And make them TEMPEST to boot.
When I was working in the field the specs were never available to me. And I had held a Secret clearance in the past.
The entropy of information.....
In theory there is no difference between theory and practice, but in practice there is.
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Another use for cosmic rays:
http://home.earthlink.net/~drestinblack/tesfreee.htm
This is a project I want to do eventually, I just need to find a decent wiring diagram that shows how to get power out so it can be measured.
http://home.earthlink.net/~drestinblack/tesfreee.htm
This is a project I want to do eventually, I just need to find a decent wiring diagram that shows how to get power out so it can be measured.
Evil is evil, no matter how small