2 ms·
Are both computers running the same software? Because if so, that's a single point of failure right there. (Just like multiply redundant hardware won't help yo
by TheLoneWolfling 11y ago
Are both computers running the same software? Because if so, that's a single point of failure right there.
(Just like multiply redundant hardware won't help you if there's a design flaw and they all fail at once.)
- manarth 11y agoYes, they are…and that's an acknowledged failure risk. A number of divers mitigate that by having a separate independent fourth O2 cell, monitored by a separate computer (from another manufacturer). Divers are trained to watch for any sign that the computer isn't doing its job (and there are certain typical indicators, although they don't cover every possible scenario), and if there's any doubt, switch to an alternative (either bailout to open-circuit, or switch to a fully-manual mode of operation) - either way, the computer is then out of the picture. Of course, fully-manual mode just isn't possible for, say, a passenger jet.