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Updates to the user-manual: DivePlanning
- Added some more text to Miika's great start describing the planner. - Tried doing something more with the formatting options asciidoc give us. [Dirk Hohndel: merged with my earlier changes to the same section] Signed-off-by: Reinout Hoornweg <reinout@xs4all.nl> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Reinout Hoornweg
Dirk Hohndel
parent
55cb953922
commit
51cac900aa
2 changed files with 72 additions and 26 deletions
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@ -1,4 +1,5 @@
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ASCIIDOC=asciidoc
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A2X=a2x
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BROWSER=firefox
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doc: user-manual.html
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@ -8,3 +9,16 @@ show: user-manual.html
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user-manual.html: user-manual.txt
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$(ASCIIDOC) user-manual.txt
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# Alternatively::
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user-manual.xhtml: user-manual.txt
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$(A2X) --icons -f xhtml user-manual.txt
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user-manual.text: user-manual.txt
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$(A2X) -f text user-manual.txt
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user-manual.pdf: user-manual.txt
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$(A2X) -f pdf user-manual.txt
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clean:
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rm -f user-manual.html user-manual.pdf user-manual.text
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@ -573,14 +573,20 @@ Planning Dives
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--------------
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Subsurface supports planning of dives using open and closed circuit
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equipment. Deco calculations with optionally displaying the ceiling is
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done using a new implementation of Bühlmann ZH16 algorithm with
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gradient factors. Since the planner and our implementation of
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decompression algorithms are new and have received only a limited amount
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of testing - WE STRONGLY RECOMMEND NOT TO PLAN DIVES SIMPLY BASED ON THE
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RESULTS GIVEN HERE.
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equipment. This allows users to experiment with different plans and see
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the effects of changing various parameters of the dives.
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In order to plan a dive some basic information needs to be entered:
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[WARNING]
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Deco calculations with optionally displaying the ceiling is
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done using a new implementation of the Bühlmann ZH16 algorithm with
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gradient factors. Since the planner and our implementation of the
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decompression algorithms are new and have received only a limited amount
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of testing: +
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**WE STRONGLY RECOMMEND NOT TO PLAN DIVES SIMPLY BASED ON THE
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RESULTS GIVEN HERE.**
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When you start the planner, a dialog appears. In order to plan a dive
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some basic information needs to be entered:
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- planned start time of the dive
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- air consumption
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@ -590,18 +596,18 @@ In order to plan a dive some basic information needs to be entered:
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There is also other information available for those who
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are familiar with dive planning or use closed circuit rebrethers.
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[width="90%",cols="<5%,20%,<75%",grid="none",frame="none",style="monospaced"]
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[width="90%",cols="<25%,<75%"]
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|===============================================================================
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|| Dive starts | +60:00 means that the dive is 60 minutes in the future
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|| Surface Pressure | Air pressure on surface, default 1013 should suffice for most
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|| SAC during dive | Air consumption during the dive, use conservative value based on your own air consumption e.g. 20l/min
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|| SAC during decostop | Air consumption during decompression stop, e.g. 17 l/min
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|| GFlow | Gradient factor low value affects the ceiling calculation, leave to default if you are not familiar with GF
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|| GFhigh | Gradient factor high value affects the ceiling calculation, leave to default if you are not familiar GF
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|| **Ending Depth** | Depth where current segment ends; a different depth from the previous segment creates a transition segment for ascent or descent, keeping the same depth creates a segment at the given depth. By default the planner uses the measurement for length set in the preferences (meters for most users) - this can be overridden by explicitly specifying 'm' or 'ft'.
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|| **Segment Time** | Enter time in minutes; segment duration / relative time is indicated by a '+': '+3' or '+3:00' creates a segment that lasts 3 minutes, a bare number like '7' is used for a segment that ends 7 minutes after the start of the dive.
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|| **Gas Used** | Breathing gas mix used; the parser is reasonably flexible and understands terms like AIR, EAN32, 36% or 15/50 (compressed air, 32% nitrox, 36% nitrox or 15% O₂ / 50% He trimix, respectively); leaving this field empty indicates continued use of the previous gas, air by default
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|| **CC SetPoint** | SetPoint when diving with a closed circuit rebreather. Leave empty for open circuit dives with standard scuba equipment
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| Dive starts | Start time of the dive; '+60:00' means that the dive is 60 minutes in the future
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| Surface Pressure | Air pressure on surface, default 1013 should suffice for most
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| SAC during dive | Air consumption during the dive, use conservative value based on your own air consumption e.g. 20l/min
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| SAC during decostop | Air consumption during decompression stop, e.g. 17 l/min
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| GFlow | Gradient factor low value affects the ceiling calculation, leave to default if you are not familiar with GF
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| GFhigh | Gradient factor high value affects the ceiling calculation, leave to default if you are not familiar GF
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| **Ending Depth** | Depth where current segment ends; a different depth from the previous segment creates a transition segment for ascent or descent, keeping the same depth creates a segment at the given depth. By default the planner uses the measurement for length set in te preferences (meters for most users) - this can be overridden by explicitly specifying 'm' or 'ft'.
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| **Segment Time** | Enter time in minutes; segment duration / relative time is indicated by a '+': '+3' or '+3:00' creates a segment that lasts 3 minutes, a bare number like '7' is used for a segment that ends 7 minutes after the start of the dive.
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| **Gas Used** | Breathing gas mix used; the parser is reasonably flexible and understands terms like AIR, EAN32, 36% or 15/50 (compressed air, 32% nitrox, 36% nitrox or 15% O₂ / 50% He trimix, respectively); leaving this field empty indicates continued use of the previous gas, air by default
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| **CC SetPoint** | SetPoint when diving with a closed circuit rebreather. Leave empty for open circuit dives with standard scuba equipment
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|===============================================================================
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The last four elements are repeated for each segment of a planned dive.
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@ -609,12 +615,13 @@ To illustrate the functionality let's plan a dive to 20 meters lasting 20
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minutes at that depth and another 10 minutes at 10 meters. We'll only
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concentrate on the dive profile here filling the segments.
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[width="30%",cols="<15%,10%,<15%,<60%",grid="none",frame="none",style="monospaced"]
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[width="30%",cols="<33%,<33%,34%",options="header"]
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|===============================================================================
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|| 20 | +3 | AIR
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|| 20 | +20 |
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|| 10 | +1:30 |
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|| 10 | +10 |
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| Ending Depth | Segment Time | Gas Used
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| 20 | +3 | AIR
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| 20 | +20 |
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| 10 | +1:30 |
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| 10 | +10 |
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|===============================================================================
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So we define the ending depth for the first segment to be 20 meters
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@ -638,9 +645,34 @@ speed.
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If needed more segments can be added by clicking 'Add waypoint'.
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To add the dive to the divelist simply click 'OK'. The dive notes now
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contain the detailed dive plan including the estimated gas consumption
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based on the SAC rates specified.
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To add the dive to the divelist simply click 'OK'. Double-clicking on
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the planned dive wil show the details, including a written diveplan in
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the Notes.
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The dive we defined earlier will present itself like this:
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--------------------------
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DISCLAIMER / WARNING: THIS IS A NEW IMPLEMENTATION OF THE BUHLMANN
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ALGORITHM AND A DIVE PLANNER IMPLEMENTION BASED ON THAT WHICH HAS
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RECEIVED ONLY A LIMITED AMOUNT OF TESTING. WE STRONGLY RECOMMEND NOT TO
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PLAN DIVES SIMPLY BASED ON THE RESULTS GIVEN HERE.
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Subsurface dive plan
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based on GFlow = 30 and GFhigh = 80 <1>
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Transition to 20 m in 3:00 min - runtime 3:00 on air <2>
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Stay at 20 m for 20:00 min - runtime 23:00 on air <3>
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Transition to 10.0 m in 1:30 min - runtime 24:30 on air
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Stay at 10.0 m for 10:00 min - runtime 34:30 on air
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Transition to 0.0 m in 1:06 min - runtime 35:36 on air <4>
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Gas consumption:
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1849l of air <5>
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--------------------------
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<1> This shows the values used for GFlow and GFhigh
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<2> A 'transition' is a change in depth in a certain amount of time
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<3> A 'stay' is a constant depth for a specified amount of time
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<4> Note that the planner assumes you always want to end the dive at the surface.
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The final segment to 0m with a sane ascent rate is automatically added.
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<5> The planner tries to estimate the needed amount of gas based on the plan and SAC
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[[S_Webservice,Web Service and Companion App]]
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