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  #85  
Old 07-30-2013, 02:05 PM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by BlueLine View Post
Does this mean that those of us patiently (or not) waiting until 8/9 to order a CRD Summit will get the ACC with Stop-Go automatically since our vehicles have yet to be built?
Yes .
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  #86  
Old 07-30-2013, 02:05 PM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by plynn7 View Post
Any chance the Rear DVD will quietly go in to prodution too?
Unlikely, but these days nothing an be ruled out.
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  #87  
Old 07-30-2013, 02:06 PM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by silvermax04 View Post
Milous any word if its software that can be upgraded on existing builds or is it a hardware change?
No info yet, still looking...
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  #88  
Old 07-30-2013, 02:42 PM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by Milous View Post
Yes .
Sweet!
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Old 07-30-2013, 04:11 PM
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Re: Adaptive Cruise Control Stop-go

I just had a long convo with my cousin and explained to him exactly what we wanted to know, his work seem so fun .... LandRoverJaguar and a few other manufactures use a system that adds a short range radar, but its not required to bring the car to a complete stop.. So in short, the current long wave radar unit can be used to bring the vehicle to a stop! so in theory the existing parts should be fine

"How to reprograms it" unfortunately he couldn't tell me as he has no experience with ChrylserJeep
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Old 07-30-2013, 04:34 PM
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Re: Adaptive Cruise Control Stop-go

Radar doesn't have a "range" so to speak. It sends out radio frequencies in an infinite beam. What is probably more likely is to adjust the sensitivity of the antenna to receive the return beam once it bounces off an object (like a car in front of you). That's not to say there isn't more than one radar antenna on our Jeeps however.

If you think about it, not much will change actually, other than to reprogram what speed our cars will slow down to before the ACC shuts off. I can't imagine Jeep would have used different physical parts for a feature they knew all along was going to eventually change anyway. It would be more expensive to do it that way. Now whether or not they're willing to reprogram our Jeeps that have already been manufactured without stop and go is an entirely different story.

And I thought I was going to just patiently and quietly wait for an answer. Ha.

Tony
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  #91  
Old 07-30-2013, 05:57 PM
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Re: Adaptive Cruise Control Stop-go

I bet even if Jeep won't give existing builds a software update to include the stop function, Willx or someone else can post an update that allows us to add it.
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  #92  
Old 07-30-2013, 07:33 PM
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Quote:
Originally Posted by Tony407 View Post
Radar doesn't have a "range" so to speak. It sends out radio frequencies in an infinite beam. What is probably more likely is to adjust the sensitivity of the antenna to receive the return beam once it bounces off an object (like a car in front of you). That's not to say there isn't more than one radar antenna on our Jeeps however.

If you think about it, not much will change actually, other than to reprogram what speed our cars will slow down to before the ACC shuts off. I can't imagine Jeep would have used different physical parts for a feature they knew all along was going to eventually change anyway. It would be more expensive to do it that way. Now whether or not they're willing to reprogram our Jeeps that have already been manufactured without stop and go is an entirely different story.

And I thought I was going to just patiently and quietly wait for an answer. Ha.

Tony
The term long and short range is a reference to its operational range, meaning it doesn't operate outside a preset range. These radar systems don't just operate with an infinite range, that wouldn't make sense. The radar sensitivity can not just be turned up or down, lol, they are engineered and manufactured to operate within certain limits.

All adaptive cruise units have a long range radar that operates up to 150m in front of the car and some manufactures use an additional short range radar, with a much shorter wider range which operates up to 30m (hence being called short range). Both use separate radar, sometimes combined within a same unit or sometimes located separately, however the short range is only use to make the system more precise, it's not really needed to bring the car to a stop! :-)

The new Cherokee has an additional photo stereo system thing that enhances the adaptive cruise even further and it's also used for land departure warning.. But it's not needed to bring vehicle to stop, one radar is sufficient enough.

So it looks like it can be done, but we won't know for sure!
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Old 07-30-2013, 08:11 PM
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Originally Posted by JeepGCOverland View Post
I bet even if Jeep won't give existing builds a software update to include the stop function, Willx or someone else can post an update that allows us to add it.
Who is the Willx guy you speak of???

I am going to need to dig my bunker deeper. Lol.
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Old 07-31-2013, 01:51 AM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by 2mad2bad View Post
The term long and short range is a reference to its operational range, meaning it doesn't operate outside a preset range. These radar systems don't just operate with an infinite range, that wouldn't make sense. The radar sensitivity can not just be turned up or down, lol, they are engineered and manufactured to operate within certain limits.
I never said they operate within an infinite range. Agreed, that wouldn't make sense. However, for the purposes of our discussion, a radar beam is infinite (not that I want to get into a discussion about waves traveling through space, or how much they're affected by gravity, etc.) The beam will travel forever until it's reflected, refracted or absorbed. A receiver inside the sending unit constantly scans for reflected signals. This receiver's sensitivity is what's adjustable, not the length of the radar beam. This, as you say, is how it's engineered and manufactured to operate within certain limits.

How many antennas our ACC needs to operate and all the other parameters it's programmed to do is another topic of which I don't claim to entirely understand. However, I stand by my claim.

Tony
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Old 07-31-2013, 04:57 PM
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Re: Adaptive Cruise Control Stop-go

I would just like to state - for the record - that THIS IS FREAKING AWESOME!!

I spend a ton of time in stop and go traffic everyday, so this small feature will really improve an hour or more of my day greatly. Woo!

Now, if I could just order one of them there diesels at some point ...
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  #96  
Old 07-31-2013, 05:21 PM
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Re: Adaptive Cruise Control Stop-go

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Originally Posted by walt_mink View Post
I would just like to state - for the record - that THIS IS FREAKING AWESOME!!

I spend a ton of time in stop and go traffic everyday, so this small feature will really improve an hour or more of my day greatly. Woo!

Now, if I could just order one of them there diesels at some point ...
Agree 100% I am in the same boat with the stop and go traffic this would be great. With the way it currently is where it cuts out at 15 mph it doesn't do much good for the stop and go traffic but works fine for a highway cruise. I hope it is a software upgrade, buying some of the first 14s has its disadvantages
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