Aerospace control systems often run in lockstep and have voting, etc. The smallsat built by students that I mentored didn't have voting, but it had processors with moderately sophisticated watchdogs performing mutual-power-monitoring and simple hardware failsafes. This is a common set of techniques in critical systems. If either watchdog stops responding to the other it is reset. If any processor starts to draw too much or too little current it is reset. If any processor starts disagreeing with the rest it is instantly reset. > This does make one wonder about an architecture that has 4 or more identical processors hooked up to the same inputs and two watchdogs watching them (and each other). It's basically cache invalidation on steroids. Also, synchronization is one of the hardest problems in computer science. The downside is the enormous complexity of the watchdog systems, they would be very expensive to get right. The end result could be a system that is lighter and faster than the traditional RAD hardened system simply because it's built on a smaller process. One could imagine all of these CPUs are hooked to a single bank of redundant and ECC stabilized memory, and all access goes through the watchdog processes which will only let through the ones that are in agreement. Keeping the working data synchronized would be the real trick.
If you face any issues or have any questions, please comment below.This does make one wonder about an architecture that has 4 or more identical processors hooked up to the same inputs and two watchdogs watching them (and each other).
NEWS ROVER FOR MAC PC
Hope this guide helps you to enjoy Land Rover Dashcam on your Windows PC or Mac Laptop. Double-click the app icon to open and use the Land Rover Dashcam in your favorite Windows PC or Mac. Once the installation is over, you will find the Land Rover Dashcam app under the "Apps" menu of Memuplay.
NEWS ROVER FOR MAC DOWNLOAD
Always make sure you download the official app only by verifying the developer's name.
NEWS ROVER FOR MAC INSTALL