[PSUBS-MAILIST] 12V DC Sonar Implementation

[Steve McQueen]

Joe, thanks for the feedback.

It is funny how posting an idea will all of a sudden opens your eyes to
other solutions : )

Based on Alec's comment I can see that for my 4 hour operational
requirement I could potentially just utilize the laptop or tablet's
internal battery (maybe have to also use a spare battery) vs. the power
suck of trying to generate 120V AC. This way I would only need to supply
the sonar head and I could do this easily with a small AGM battery.

Steve


On Sat, Feb 1, 2014 at 9:26 AM, Joe Perkel <josephperkel at yahoo.com> wrote:

>
> Steve,
>
> I've briefly looked at this issue for myself down the road.
> Hyperdrive,   http://www.hypershop.com/HyperDrive/iUSBport/  makes a
> wireless USB port device for iPad, I have one. Perhaps that would make the
> tablet interface doable.
>
> If  PC is a must, Panasonic Tough-book is reduced scale, and both shock
> and water resistant. It's the laptop of choice for EMS personnel. It is
> pricey as a result. Perhaps it can be sourced from a guy named "Bear" at
> the local pawn shop?! :)
>
> Joe
>
>
>   On Saturday, February 1, 2014 8:54 AM, Steve McQueen <
> psub101 at indy.rr.com> wrote:
>  Alec, yes. I agree. My initial approach is basic old school. The tech
> support guys at Teledyne are very helpful and I'm sure it has been done
> before.  Good feedback ( I wasn't sure that email made it to the thread).
> Thanks.
>
>
> On Fri, Jan 31, 2014 at 10:03 PM, Private <alecsmyth at gmail.com> wrote:
>
> Hi Steve,
>
> I find a laptop hard to imagine in a 250 just due to space constraints. I
> think the first thing I'd look at is whether one could interface the sonar
> to a tablet instead. Note that an iPad, for instance, has a 12 hour battery
> so you would save space, amps, and money by getting rid of the DC-AC
> converter.
>
> Best,
>
> Alec
>
>
>
> On Jan 31, 2014, at 8:19 PM, Steve McQueen <psub101 at indy.rr.com> wrote:
>
> All, thought I would share an exercise I am noodling through. As an off
> shoot to developing my K-250 electrical layout I am looking at what it
> would take to add (later) a sonar system based on a 12V DC system.  Thought
> I could get some feedback as well as provide an "example" for others
> considering a similar scenario.
>
> On the Psubs site under Submitter/Steve McQueen/K-250 Sonar Electrical you
> can find my initial version of a wiring diagram. In this example I used
> easily found components as a base reference.
>
> My current self inflicted design constraints:
> Implementation of the Teledyne BlueView M-900 2D imaging sonar
> Utilization of laptop for viewing (vs. separate processor with remote
> monitor)
> Dedicated 12V DC sourced (separate from main 12V DC bank)
> 4 hours of run time
>
> I am sure my initial design can be made more efficient. The initial design
> has 2 parallel 12V/150 Ah batteries which are larger and heavier than I'd
> like (22x4x11 inches or 560x110x280 mm and 89.3 lbs or 40.5 kg). This
> design gives 3.9 hrs of run time
>
> For me the design goal is to reduce battery footprint (size/weight)
>
> Any comments? Anyone have sonar based on 12V DC?
>
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