I design process control equipment for a living and you are 100% correct. When the controller/PLC dies or the power goes out everything goes to a safe state that protects the human. Big part of the design decisions.
Might be the doors are fail shut if anything happens… But that seems like the worst design ever.
Come to think of it, it’s basic design to designate features as fail closed/fail open on loss of power in an emergency, and you go with what’s inherently safe. It appears Tesla did not consider basic safety design. To no one’s surprise.
afraid_of_zombies@lemmy.world 1 week ago
assassin_aragorn@lemmy.world 1 week ago
I’ve unfortunately been working on process control strategies for almost a year now on new and novel applications for my company, so I’ve been intimately familiar with this. If it isn’t obvious, this isn’t my favorite professional area of interest hahaha.
Designating fail open and fail closed valves is so intrinsic to what I’ve been doing that I can’t imagine someone designing a car control system and not thinking about that at all.
afraid_of_zombies@lemmy.world 1 week ago
I designed a quencher system that failed closed, no water flowing, during outages once. Granted I was an intern but still not my proudest moment.
It’s weird now as my employer is slowing moving into motion control tech for waste. Seeing the changes like having to really think about hardwired limit switches and safety relays. Chemical world I feel is easier.
assassin_aragorn@lemmy.world 1 week ago
We all make mistakes. I once forgot to include gravity in a pressure drop calculation for a 100 ft vertical pipe as part of a steam drum system. I had to send an awkward email revising the design pressure I previously communicated out.
But hey, if we were perfect, we wouldn’t need peer review.
I have a little bit of experience with limit switches, but that’s really interesting. It certainly seems like an unusual system. I’m a lot more familiar with safety relays.
Passerby6497@lemmy.world 1 week ago
You’re assuming they didn’t consider it, vs having considered it and thought that its more important to protect property than peoples’ lives. Again, to no one’s surprise.
assassin_aragorn@lemmy.world 1 week ago
It really says something when even oil companies will design for these considerations but Tesla won’t.