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submitted 1 month ago by [email protected] to c/[email protected]
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[-] db2 71 points 1 month ago

"Software defined vehicle"

đź’€

[-] olutukko 33 points 1 month ago

our cars have long been software defined. not just a high level software that they put now. but for a long time there has been chip that is responsible for a LOT of stuff, brakes, steering, abs, traction control etc.

[-] db2 23 points 1 month ago

Roses are red, hope this is never real
Your brake pedal has now become your steering wheel

[-] [email protected] 19 points 4 weeks ago

Default state is a hard left, flooring it is a hard right, precisely 50% is straight.

[-] [email protected] 6 points 4 weeks ago

Never let go, or you dive left into oncoming traffic lol

[-] [email protected] 8 points 4 weeks ago

It should be said, though, that brakes and steering are still possible via plain mechanics in hopefully all cars. There's usually electronics to amplify it, meaning your car brakes harder and steers more easily without you putting in full force, but if that fails, it should degrade gracefully.

Had that happen in my old car a few years ago, that the whole engine and everything just turned off while I was rolling downhill. It was a bit of a panic moment, when suddenly the brake pedal and steering wheel took a lot more force to move, but the instinct reaction to just put in that force worked.

[-] [email protected] 5 points 4 weeks ago* (last edited 4 weeks ago)

I don't drive but if the engine is off while the clutch is ~~disengaged~~ engaged wouldn't that produce a braking effect. Maybe not enough to stop the roll on a slope but enough that normal foot braking would stop the vehicle?

[-] [email protected] 3 points 4 weeks ago

You underestimate what "downhill" can do to that equation. I recommend looking at some roads in WV like route 60 to the east of Gauley Bridge, Mount Alpha Road in Kanawha City, or Goff Mountain road that connects Institute to Cross Lanes, on the end near Institute. That last one has a hill steep enough that just sitting in neutral will get you up to 60MPH before you reach the bottom without heavy breaking.

I used to claim my state didn't have any bad drivers, because there are too many places where if you fuck up you're going to fall a.couple of stories and get impaled on a tree.

[-] [email protected] 2 points 4 weeks ago

Yeah, in a manual car with the clutch disengaged and a gear engaged (and obviously the gas pedal disengaged), it should brake a little bit on its own. Many people don't even use their parking brake, unless they're parking on a slope, because that braking effect is good enough.

But I don't think, you'd even need this braking effect. You can apply a lot of force to that brake pedal, if needed. I was taught, that if I need to brake for an emergency, I should kick, with full-force, the brake pedal and the clutch.

Not entirely sure, why that's advised, maybe to avoid having the engine stutter or shut off, but I assume you couldn't raise the brake amplification much more than that anyways (especially not without the driver being lifted off their seat and losing control).

The amplification is more of a comfort feature, since it means you barely need to move your feet in every-day-traffic.

[-] [email protected] 2 points 4 weeks ago

First to clarify, you mean with the clutch pedal "out." Pushing the pedal down actually disengages the clutch, ie forcing the plates apart to disconnect the engine from the transmission.

In a gasoline powered car that is in gear, yes there is a braking effect. Diesel engines don't, which is why semi trucks have a thing called a Jake Brake.

Also, depending on what went wrong with your engine/why it is shut down, you may not want to choose to do this.

[-] [email protected] 1 points 4 weeks ago

Its pretty exciting too. With EVs it makes even more sense and hopefully means we can see more competition in the market since it means more modular vehicles (imagine if every steering column could work for every drive train for example).

[-] AnUnusualRelic 2 points 4 weeks ago

You've been able to do that for ages. Granted it's pretty much only with tyres and windscreen wipers for now, but it's a start!

[-] [email protected] 1 points 4 weeks ago

Yep, simplyfy, standardize, modularize, repeat, and we might actually get affordable cars (or anything really) again.

Its not something encumbant car manufacturing would be trying to push for outside of their own production lines though.

[-] [email protected] 8 points 4 weeks ago

The term "SDV" is pretty much an industry standard in automotive engineering

[-] [email protected] 5 points 4 weeks ago

Is it just the antonym to fly-by-wire?

[-] [email protected] 67 points 4 weeks ago* (last edited 4 weeks ago)
[-] [email protected] 8 points 4 weeks ago

This is the way

[-] [email protected] 56 points 1 month ago

Gives a whole new meaning to Kernel Panic.

[-] [email protected] 37 points 1 month ago

And "driver crash"

[-] [email protected] 6 points 1 month ago

gives no meaning to full metal panic.

[-] [email protected] 36 points 1 month ago* (last edited 1 month ago)

As someone who's working with Elektrobit and software produced by them, both are hot, steaming garbage. I'm not envying anyone who swallows this bait. Mildly put, Elektrobit underdelivers both on time and quality of their commitments. I hope at least they're cheap but I don't have visibility in that area.

[-] [email protected] 33 points 4 weeks ago

And so what?

Many things are based on Linux that does not mean anything for the customer, because those end up being heavly modified version being able to run just on this specific chip and only support vendor provided software on top.

My TV runs Android, so Linux kernel, but can I reinstall it and run some Debian with Kodi bypassing all the spyware Android crap? Heck no.

[-] [email protected] 7 points 4 weeks ago

They’re TiVoizing our TVs!

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[-] inclementimmigrant 33 points 4 weeks ago

I'm sorry but embedded linux has been around for a while now and I'm pretty sure there's a RHEL for vehicles specifically available too.

[-] [email protected] 3 points 4 weeks ago

Yeah Automotive linux is old news. Ford had a Microsoft system, but I haven't followed Automotive much after leaving that induatry.

[-] [email protected] 28 points 1 month ago
[-] [email protected] 10 points 1 month ago

Nice looks like it’s open source also https://gitlab.com/automotivegradelinux

[-] [email protected] 3 points 1 month ago

Yeah, this has been used in automotive for a long time.

[-] SpaceNoodle 16 points 1 month ago

Its development was led by the automotive electronics supplier Elektrobit

Any of y'all who've ever had to use their software knows that this is not going to go well

[-] [email protected] 4 points 1 month ago* (last edited 1 month ago)

I thought I'd be the only lucky one here! 🥹

[-] SpaceNoodle 3 points 1 month ago

I want to cast Tresos into the fires of Mt. Doom

[-] [email protected] 11 points 1 month ago

That would be great to have linux on my car!!

[-] [email protected] 2 points 1 month ago

This is the best summary I could come up with:


One of the more interesting paradigm shifts underway in the automotive industry is the move to software-defined vehicles.

Instead, you'll find a small number of domain controllers—what the automotive industry is choosing to call "high performance compute" platforms—each responsible for a different set of activities.

You should expect to see this approach more often as automakers develop new platforms, and there are already examples from Audi, BMW, McLaren, and Porsche on the road or arriving shortly.

"The beauty of our concept is that you don't even need to safety-qualify Linux itself," said Moritz Neukirchner, a senior director at Elektrobit overseeing SDVs.

"So in the end, since we take Linux out of the certification path and make it usable in a safety-related context, we don't have any problems in keeping up to speed with the developer community," he explained.

And this is the kind of challenge that you're being put up to if you want to participate in that speed of innovation of an open source community as rich as that of Linux and now want to combine this with safety-related applications," Neukirchner said.


The original article contains 688 words, the summary contains 183 words. Saved 73%. I'm a bot and I'm open source!

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this post was submitted on 23 Apr 2024
298 points (96.6% liked)

Linux

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From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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