Quote:
Maximilium:
GR: Just as a counter argument, do you really want to shut down the PC because the pump quit? Isn't the key issue that something is getting to hot? (like a CPU?) If so, why the concern with detecting pump problems? Wouldn't it be sufficient and more appropriate to look for CPU over heating?
I have the answer of that, NO.
Lets use a P4 for example, is supose to turn off the computer when it gets too hot, before it reach that point the prosesor is going to slow down ( with the posibility of corrupting any program runing).
Did you ever had problems turning off the computer on windows 98, xp, 2000 and the computer will hang because a program stop responding?
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Actually, no, since I run Linux
However note that I did NOT rule out the 'jump off a cliff' power shutdown! I'm just suggesting that it be done with CPU temp rather than coolant flow. This is something that isn't that difficult, many fan controllers either have the ability to do a hard shutdown built in, or could be modded to do it very easily. (And no BR, you don't have to plug a fan into them
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Even running a stable and reliable OS like Linux, I still believe that a non-software / computer independent shutdown system is a vital part of good system design, I just think it should be operated by the key critical function, not something which might not matter as much.
Assuming the fail-safe fails safely, a CPU temp based hardware shutdown will trip on just about any failure, where there might be times a CPU would over heat w/o upsetting a flow sensor - for instance a block getting dislodged or a rad's airflow being blocked.
Gooserider
Gooserider