HUD showing deco ceiling violation?

sven · 12th July 2006, 03:54

Most would have read Steve's post about his recent adventure, where he performed a (semi) blind self extraction from 105m. If you haven't, here is the story.

Steve's post triggered a thought: What about another LED in the HUD, so the HUD not only shows the health of the loop (O2 wise), but also indicates violations of the deco ceiling? Green = below or at deco ceiling, Red = go down. That would be visible without mask.

How to do it? I have no idea. I don't think any dive computer in the market has an interface which can be used to control a LED based on the current deco calculations. But it would be nice to have ...
Of course, such a minimalist display (Green/Red) would not give you any info on the actual depth at which you are (info needed for gas switches), or, how long to stay there. But once you can control a LED based on deco calculations, it should be possible to have some blinking patterns to prompt for gas switches.

Home builders, CCR makers, HUD builders, DeltaP, Cochran, ... anyone?

E-man · 12th July 2006, 04:04

I've always thought a few button sequences that you could memorize to give you a 'beeping' depth output would be a nice and easy feature for computers...

Gibbon · 12th July 2006, 04:33

How visible a HUD is without a mask is subjective however the deco from the HUD you describe is implememented in the Boris and is I think an excellent feature.

As I understand it shows a ceiling limit or rather when you are above that ceiling !

I am sure a Boris diver will be along soon to detail exactly how it works so that the rest of us can be appropriately jelous.

diverrob · 12th July 2006, 05:28

I read this and found it an interesting question. Not that it was covered in my training but I believe that I read in the VISION manual that the HUD would display red if you violated the ceiling, so........ I flashed up the system and went into demo mode and created a deco dive, on my assent I violated the ceiling and as I expected both LED's showed RED. I then went below the required ceiling and both LED's turned back to green. This seems to answer the question then (yes there is a HUD which will show a ceiling violation). Weather you can see it without a mask on I am not sure but I will check it out on the next dive.

Rob

***ScubaDadMiami*** · 12th July 2006, 05:57

I'm up for any improvements in technology that will work. If there were a way to spend deco and ascent without having to stare at gauges, I am all for it.

On the other hand, I just make sure to always have a backup mask along in my pocket. I have dived wet in years, but I even have pockets on my wetsuit.

(Seriously, glad you made it, Sven, and thanks for helping the rest of us not become complacent about carrying what we need with us on the dives).

sven · 12th July 2006, 06:17

Quote: (Originally Posted by ScubaDadMiami)

(Seriously, glad you made it, Sven, and thanks for helping the rest of us not become complacent about carrying what we need with us on the dives).

Thanks for the thanks, but it is Steve who deserves the credit. I wasn't there, and I have never met Steve. :-)

***ScubaDadMiami*** · 12th July 2006, 06:19

Quote: (Originally Posted by sven)

Thanks for the thanks, but it is Steve who deserves the credit. I wasn't there, and I have never met Steve. :-)

Oops. I meant "Steve."

Sutty · 12th July 2006, 07:19

I have no problem reading my HUD mask-less, its pretty easy as you don't need clear focus to read a flashing coloured LED.
An easier system to implement on a dive computer would be an LED on the computer's display with a simple signalling sequence for deco ceiling violation, eg green for below ceiling, flashing if within a couple of metres of ceiling, red if violated. You would still be able to see it without a mask.

Neil

decoweenie · 12th July 2006, 08:23

Quote: (Originally Posted by Sutty)

eg green for below ceiling, flashing if within a couple of metres of ceiling, red if violated.

Or...

flashing green for below
steady green for at ceiling +/- 1 meter
flashing red for above

So it is easy to go up until the green light stop flashing, stay until it flashes again (stop time is finish, move to next stop depth), repeat until surfaced.

Drmike · 12th July 2006, 08:35

Quote: (Originally Posted by Sutty)

I have no problem reading my HUD mask-less, its pretty easy as you don't need clear focus to read a flashing coloured LED.
An easier system to implement on a dive computer would be an LED on the computer's display with a simple signalling sequence for deco ceiling violation, eg green for below ceiling, flashing if within a couple of metres of ceiling, red if violated. You would still be able to see it without a mask.

Neil

Boris has the red LED in the hud for deco ceiling plus the wrist mounted primary display screen flashes red if there is an alarm (new Colour screen display)

HUD flashing, primary display flashing and rear facing (buddy) display flashing - thats a lot of flashing!

12th July 2006, 03:54	#1 (permalink)
sven Blogs Admin / Forum Mod Current Rebreather/s: Inspiration Classic Other Rebreather/s: Evolution Join Date: Nov 2005 Location: Sydney Posts: 551	HUD showing deco ceiling violation? Most would have read Steve's post about his recent adventure, where he performed a (semi) blind self extraction from 105m. If you haven't, here is the story. Steve's post triggered a thought: What about another LED in the HUD, so the HUD not only shows the health of the loop (O2 wise), but also indicates violations of the deco ceiling? Green = below or at deco ceiling, Red = go down. That would be visible without mask. How to do it? I have no idea. I don't think any dive computer in the market has an interface which can be used to control a LED based on the current deco calculations. But it would be nice to have ... Of course, such a minimalist display (Green/Red) would not give you any info on the actual depth at which you are (info needed for gas switches), or, how long to stay there. But once you can control a LED based on deco calculations, it should be possible to have some blinking patterns to prompt for gas switches. Home builders, CCR makers, HUD builders, DeltaP, Cochran, ... anyone? __________________ Regards, Sven The Sydney Project website: http://www.sydneyproject.com My Blog: http://sven.rebreatherworld.com "Whenever you find yourself on the side of the majority, it's time to pause and reflect." Mark Twain
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12th July 2006, 04:04	#2 (permalink)
E-man On the loop! Current Rebreather/s: Inspiration Classic Optima Other Rebreather/s: Titan Join Date: Sep 2005 Location: Eastern Coast ;) Posts: 212	Re: HUD showing deco ceiling violation? I've always thought a few button sequences that you could memorize to give you a 'beeping' depth output would be a nice and easy feature for computers...
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12th July 2006, 04:33	#3 (permalink)
Gibbon Southern Monkey Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2005 Location: East Devon Posts: 224	Re: HUD showing deco ceiling violation? How visible a HUD is without a mask is subjective however the deco from the HUD you describe is implememented in the Boris and is I think an excellent feature. As I understand it shows a ceiling limit or rather when you are above that ceiling ! I am sure a Boris diver will be along soon to detail exactly how it works so that the rest of us can be appropriately jelous.
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12th July 2006, 05:28	#4 (permalink)
diverrob The Evolution of Diving Current Rebreather/s: Evolution Other SCR Other Rebreather/s: Not Bought Yet Other SCR Join Date: May 2005 Location: Victoria BC Canada Posts: 349	Re: HUD showing deco ceiling violation? I read this and found it an interesting question. Not that it was covered in my training but I believe that I read in the VISION manual that the HUD would display red if you violated the ceiling, so........ I flashed up the system and went into demo mode and created a deco dive, on my assent I violated the ceiling and as I expected both LED's showed RED. I then went below the required ceiling and both LED's turned back to green. This seems to answer the question then (yes there is a HUD which will show a ceiling violation). Weather you can see it without a mask on I am not sure but I will check it out on the next dive. Rob
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12th July 2006, 05:57	#5 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,215	Re: HUD showing deco ceiling violation? I'm up for any improvements in technology that will work. If there were a way to spend deco and ascent without having to stare at gauges, I am all for it. On the other hand, I just make sure to always have a backup mask along in my pocket. I have dived wet in years, but I even have pockets on my wetsuit. (Seriously, glad you made it, Sven, and thanks for helping the rest of us not become complacent about carrying what we need with us on the dives). __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com
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12th July 2006, 06:17	#6 (permalink)
sven Blogs Admin / Forum Mod Current Rebreather/s: Inspiration Classic Other Rebreather/s: Evolution Join Date: Nov 2005 Location: Sydney Posts: 551	Re: HUD showing deco ceiling violation? Quote: (Originally Posted by ScubaDadMiami) (Seriously, glad you made it, Sven, and thanks for helping the rest of us not become complacent about carrying what we need with us on the dives). Thanks for the thanks, but it is Steve who deserves the credit. I wasn't there, and I have never met Steve. :-) __________________ Regards, Sven The Sydney Project website: http://www.sydneyproject.com My Blog: http://sven.rebreatherworld.com "Whenever you find yourself on the side of the majority, it's time to pause and reflect." Mark Twain
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12th July 2006, 06:19	#7 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,215	Re: HUD showing deco ceiling violation? Quote: (Originally Posted by sven) Thanks for the thanks, but it is Steve who deserves the credit. I wasn't there, and I have never met Steve. :-) Oops. I meant "Steve." __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com
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12th July 2006, 07:19	#8 (permalink)
Sutty Classic Kiss diver Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Jun 2005 Location: Glossop, Derbyshire, UK Posts: 834	Re: HUD showing deco ceiling violation? I have no problem reading my HUD mask-less, its pretty easy as you don't need clear focus to read a flashing coloured LED. An easier system to implement on a dive computer would be an LED on the computer's display with a simple signalling sequence for deco ceiling violation, eg green for below ceiling, flashing if within a couple of metres of ceiling, red if violated. You would still be able to see it without a mask. Neil __________________ Never forget that life is a finite resource.
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12th July 2006, 08:23	#9 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: HUD showing deco ceiling violation? Quote: (Originally Posted by Sutty) eg green for below ceiling, flashing if within a couple of metres of ceiling, red if violated. Or... flashing green for below steady green for at ceiling +/- 1 meter flashing red for above So it is easy to go up until the green light stop flashing, stay until it flashes again (stop time is finish, move to next stop depth), repeat until surfaced. __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM Last edited by decoweenie : 12th July 2006 at 08:54.
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12th July 2006, 08:35	#10 (permalink)
Drmike RBW Member Current Rebreather/s: MK 15.X Ouroboros Other CCR Home Build Other Rebreather/s: Inspiration Classic Other CCR Home Build Join Date: Feb 2005 Posts: 3,378	Re: HUD showing deco ceiling violation? Quote: (Originally Posted by Sutty) I have no problem reading my HUD mask-less, its pretty easy as you don't need clear focus to read a flashing coloured LED. An easier system to implement on a dive computer would be an LED on the computer's display with a simple signalling sequence for deco ceiling violation, eg green for below ceiling, flashing if within a couple of metres of ceiling, red if violated. You would still be able to see it without a mask. Neil Boris has the red LED in the hud for deco ceiling plus the wrist mounted primary display screen flashes red if there is an alarm (new Colour screen display) HUD flashing, primary display flashing and rear facing (buddy) display flashing - thats a lot of flashing! __________________ Cave diving is a sport Wreck diving is a sport Diving in general is a sport 'Rebreather diving' is not a sport its the delusional obsession with a highly dangerous and often inappropriate piece of equipment
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