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nuckolls.bob(at)aeroelect
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 Posted: Sun Feb 16, 2014 6:43 am Post subject: Getting the numbers . . . |
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We have long and often lamented a lack of
good data to assist in the resolution of certain
performance issues on the AeroElectric-List over the years.
A few weeks ago I ordered some USB based,
analog and digital data acquisition modules off
eBay.
http://tinyurl.com/m68rbdl
[img]cid:.0[/img]
Received them yesterday. I downloaded the
companion software and did a quick look-see
at the graphical user interface and confirmed
that the hardware were all talking to each
other.
This is a real bargain . . . not so much for
the DAS module . . . that's easy to duplicate.
The GUI and the data management is a very
non-trivial task and at first blush, these folks
have done a good job.
The eBay listing says 'limited quantities remaining'
after having sold 438 of the things. My guess is that
they're working down a batch of 500.
But even if they run out of hardware, ALL the software
for both the USB DAS module and the GUI is down-loadable
and can be used with your own incarnation of a
USB DAS module.
I've got a lap-top that will become part of a
system I can mail out to AeroElectric-List readers who are willing
to hook it to their airplanes and record some data.
I've mounted the bare-foot module on a prototype
board so I can add an instrumentation amplifier
to the assembly for the purpose of measuring millivolt
shut levels.
This is moving forward nicely but if anyone on
the List even thinks they'd like to possess such
capabilities, they might want to pick up one or
two of the USB-DAS modules.
If this experiment produces pleasing results, it
may become the topic for a Kitplanes article.
Bob . . .
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dee.whittington(at)gmail.
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| Posted: Sun Feb 16, 2014 7:57 am Post subject: Getting the numbers . . . |
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Bob,
Just noticed this posting. Would this module and the software be useful for our Egg Subaru 3.6L engine with EGT probes added? Or is it just for Lycoming and Continentals? We also have a Vertical Power VP-200 and, of course, the GRT EIS engine monitor with the ability to record to a memory stick.
Dee
DeWitt (Dee) WhittingtonRichmond, VA
804-677-4849 iPhone
804-358-4333 Home
On Sun, Feb 16, 2014 at 9:42 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | We have long and often lamented a lack of
good data to assist in the resolution of certain
performance issues on the AeroElectric-List over the years.
A few weeks ago I ordered some USB based,
analog and digital data acquisition modules off
eBay.
http://tinyurl.com/m68rbdl
[img]cid:.0[/img]
Received them yesterday. I downloaded the
companion software and did a quick look-see
at the graphical user interface and confirmed
that the hardware were all talking to each
other.
This is a real bargain . . . not so much for
the DAS module . . . that's easy to duplicate.
The GUI and the data management is a very
non-trivial task and at first blush, these folks
have done a good job.
The eBay listing says 'limited quantities remaining'
after having sold 438 of the things. My guess is that
they're working down a batch of 500.
But even if they run out of hardware, ALL the software
for both the USB DAS module and the GUI is down-loadable
and can be used with your own incarnation of a
USB DAS module.
I've got a lap-top that will become part of a
system I can mail out to AeroElectric-List readers who are willing
to hook it to their airplanes and record some data.
I've mounted the bare-foot module on a prototype
board so I can add an instrumentation amplifier
to the assembly for the purpose of measuring millivolt
shut levels.
This is moving forward nicely but if anyone on
the List even thinks they'd like to possess such
capabilities, they might want to pick up one or
two of the USB-DAS modules.
If this experiment produces pleasing results, it
may become the topic for a Kitplanes article.
Bob . . .
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Sun Feb 16, 2014 8:43 am Post subject: Getting the numbers . . . |
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At 09:56 AM 2/16/2014, you wrote:
| Quote: | Bob,
Just noticed this posting. Would this module and the software be
useful for our Egg Subaru 3.6L engine with EGT probes added? Or is
it just for Lycoming and Continentals? We also have a Vertical
Power VP-200 and, of course, the GRT EIS engine monitor with the
ability to record to a memory stick.
Dee
|
This is a stand-alone measurement and recording system.
You might call the USB-DAS module a 5 channel voltmeter
with an input of 0-5v for each channel.
In the investigation of strobe system current profiles
I need to add a shunt to measure current (50 millivolt
drop at 20A), an instrumentation amplifier with a gain
of 100 to boost that 50mV to 5.0v, and an 3:1 attenuator
to drop the 14v bus down to 14/3 to attache to one of
the 5v voltage inputs.
The combination of USB-DAS, laptop and the right
cables, we attach it to the system to be explored . . .
in this case, the strobes that seem to be really
hard on wiring. Turn the strobe on and then get
a few seconds of data. We'll want to get data from
a number of systems . . . both problem and civil
children.
The DYNAMIC voltage-current profiles will, I
hypothesize, give us some insight as to why the problem
children are so hard on switches and other wiring.
If you wanted to use it to gather engine data,
you'd have to craft the same sort of interface between
data points to be recorded and the USB-DAS.
Look at this device as if it were a really dumb
voltmeter with the ability to gather 1000 samples
per second on fast moving data and plot it on a
graph.
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Sun Feb 16, 2014 8:45 am Post subject: Getting the numbers . . . |
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At 09:56 AM 2/16/2014, you wrote:
| Quote: | Bob,
Just noticed this posting. Would this module and the software be useful
|
Oops . . . didn't finish. Don't know about the
software. The software OUTPUTS excel or column
delimited text files for the data and will display
the data it gathers on a oscilloscope-like plot.
I don't know yet if it will suck in data
from other sources for graphical observation.
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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