RE: New Arm technologies enable safety-capable computing solutions for an autonomous future September 2930 Sep 2020 12:55
In the olden days, there wasn't much electronics in cars, then gradually more features got added and each was stand alone. Recently there may have been up to 50 ECUs in a car (tiny computers) each for only 1 or two functions. This adds to the weight, cost, wiring and installation time.
Now forward thinking car companies are addressing this problem head on, now more of the devices are being centralised into fewer and fewer "computers" each looking after a particular "domain"
So you have a core "safety" one that controls braking, steering etc This needs to work ALL OF THE TIME!!!
You have an ADAS one that looks after the cameras and the secondary features, These supervise driving, so if they fail, it won't kill you, but when you need them, you need them - like a safety belt - this needs to work 99.99... % of the time.
and you have the infotainment systems - annoying when they don't work, but shouldn't kill you if they do. These ought to be working 99 % of the time (and boy to people get grumpy when they don't work - this is why certain companies get a poor reputation)
The Arm announcement is about a series of new chip "designs" that have better performance, have better ASIL safety ratings (they are trusted better for Safety features) and have partitioning, so that you can run multiple systems on the same hardware - if one fails (let's hope it was infotainment) it will not affect your ADAS or primary safety systems.
The Arm announcement included a quote from a head honcho at VW
VW need this because they are well on the way to merging their ECUs onto fewer devices and have even restructured all of their software development teams into one organisation to support this.
Good thing too that we have devoted so much time and effort to ensure our code runs really well and is optimised for power, memory and speed on Arm!