[PSUBS-MAILIST] Environment and Control software

Mon Aug 10 20:23:25 EDT 2015

Lasse,in the ABS rules for classing & building underwater vehicles etc.Section 9, piping systems & mechanical equipment. TABLE 1Color Codes for Piping and Gas Storage BottlesName Designation ColorOxygen O2 Dark GreenNitrogen N Light GrayAir (Low Pressure) ALP BlackAir (High Pressure) AHP BlackHelium He BuffHelium-Oxygen Mix He-O2 Buff and Dark GreenExhaust E Silver.
Sorry the copy & paste didn't turn out well, the above was in a table form.It also says that other color codes can be used. It doesn't talk about the valvesthemselves, but these would be required to be labeled.I am sure DNVGL would have similar in their piping section.Alan
      From: Lasse Schmidt via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Tuesday, August 11, 2015 8:39 AM
 Subject: Re: [PSUBS-MAILIST] Environment and Control software

Very interesting link, thank you Alan.Is there color coding guidelines for valves and control knobs as well on subs?I´m thinking of colors for air valves, water valves etc.
Thanks
Lasse

10 aug 2015 kl. 22:23 skrev Alan James via Personal_Submersibles <personal_submersibles at psubs.org>:

Sean, Jon,presume it's this guide dealing with shipshttp://www.eagle.org/eagleExternalPortalWEB/ShowProperty/BEA%20Repository/Rules%26Guides/Current/86_ApplicationsofErgonomicstoMarineSystems/Pub86_ErgoMarineSystems
Great stuff, I will use this document as a guideline.Jon, you are doing a fantastic job documenting this. I will need to start on this within the next 6 months so are followingwith interest.Alan
From: Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Tuesday, August 11, 2015 8:12 AM
Subject: Re: [PSUBS-MAILIST] Environment and Control software

The ABS ergonomics guide has some info about alarm colours, sounds and behaviour which might be useful.Sean

On August 10, 2015 1:39:02 PM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

HI Cliff, thanks for the feedback.  Alarms are located on the left side 
under the yellow/black warning graphic.  Each one functions as both an 
alert and alarm.  For example, a yellow alert lights up "DEPTH" at 500 
feet to warn of approaching maximum depth.  At 600 feet it turns into a 
red alarm.  These alerts and alarms can only be disengaged by retreating 
back to a non-alarm operating environment (ie.. decreasing depth to less 
than 500 feet).  Audio alerts will accompany the visual ones.

Depth is available on all displays in the lower left corner.  Data 
logging is included and can be written to a USB drive and 'replayed' on 
any other computer that has the same software on it or even imported 
into something like a spreadsheet.  However, if I end up with a tablet I 
will likely log there directly.

Battery information will be added when I get those sensors.  This design lends itself well to semi-automated control, for example typing in a 
target depth of 100 feet and then letting the computer operate the 
motors and monitor vertical rate of descent/ascent, slow down when 
approaching the target depth, and then shutting off the motors at/near 
target depth.

A more distant and advanced project would be, I don't know, maybe 
inertial navigation using an IMU.

Jon

On 8/10/2015 12:19 PM, Cliff Redus via Personal_Submersibles wrote:

Jon, your first pass at HMI for your boat looks good. I like the 
overall layout and data seems to be presented in logical and 
straightforward manner. I think it would easy for someone other than 
yourself to get the state of the boat from this HMI.

On your DIVE panel, I would add a couple of items. ! The first is the 
battery SOC and air SOF(state of Fill, 0-100%). These are key 
items for the home screen. Also, I would add a proximity switch on 
hatch so that the hatch state is shown. This can also be used to 
lockout diving the boat unless the hatch switch is closed. Also I 
would add Altitude. Airmar has a sensor called the DST800 that gives 
boat speed, depth (altitude) and water temperature. Signals comes in 
as a RS-232 ASCII string that you parse. On the NAV screen, I would 
include depth and altitude. On HIST screen, rather than looking at 
min and max on key variable's, I would recommend that up set up data 
logging and log all ship systems say every minute. Most PLCs and 
associated HMIs have data logging capabilities. This allows you to 
download all sensor measurements and switch states as a function of 
time. This is useful to analyze how the boat performed after the dive 
and also serves a Black Box for the sub. I did not see any alarm 
database. Need to be able to see and hear and audible alarms an such 
items as low air pressure, O2 and CO2 out of range ...

Best regards

Cliff

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