Data off whirling arm

[Chuck]

Has anyone taken sensor data off a whirling object? We have a test rig which
is a stationary whirling arm (similar to a helocopter rotor) to which we
mount specimens and expose to rain. I would like to put sensors (piezo film,
TC, etc.) on the tip and take the data off. So far my only idea is an infrared
data link in the blade's center.
Thanks...
Chuck Blair
Univ. of Dayton contractor
AFRL/MLSA Rain Erosion Test Technician

[Reed_Blake]

Hi Chuck,
The traditional way to do this is with an inductive coupling or
slip rings. There are a number products for the industrial
market available. Do a search on non-contact signal
transfer or short range telemetry.

Here is a link to a manufacturers paper on non-contact
transmission:
http://www.manufacturing.net/magazine/dn/channels/tecpapr/baluff.htm


Optim Electronics Microdac looks like it will meet your
requirements.
http://www.optimelectronics.com/product_files/microdac.html

These are just suggestions. I don't have any actual experience
in this area or with these specific products.
Regards,
Reed.

Chuck wrote in message <39eb121e@newsgroups.ni.com>...
>
>Has anyone taken sensor data off a whirling object? We have a test rig
which
>is a stationary whirling
arm (similar to a helocopter rotor) to which we
>mount specimens and expose to rain. I would like to put sensors (piezo
film,
>TC, etc.) on the tip and take the data off. So far my only idea is an
infrared
>data link in the blade's center.
>Thanks...
>Chuck Blair
>Univ. of Dayton contractor
>AFRL/MLSA Rain Erosion Test Technician

[scott seidman]

Don't forget that whatever method you choose, you must somehow get power to
any sensors.

Thus, you must have at least a pair of power slip rings, or you must have a
battery on board if you go the telemetry route.

By the way, even if you have dozens of sensors, you can probably get by with
one multiplexed telemetry channel.

Scott


"Reed Blake" wrote in message
news:39eb2cc1@newsgroups.ni.com...
> Hi Chuck,
> The traditional way to do this is with an inductive coupling or
> slip rings. There are a number products for the industrial
> market available. Do a search on non-contact signal
> transfer or short range telemetry.
>
> Here is a link to a manufacturers paper on non-contact
> transmission:
> http://www.manufacturing.net/magazi
ne/dn/channels/tecpapr/baluff.htm
>
>
> Optim Electronics Microdac looks like it will meet your
> requirements.
> http://www.optimelectronics.com/product_files/microdac.html
>
> These are just suggestions. I don't have any actual experience
> in this area or with these specific products.
> Regards,
> Reed.
>
> Chuck wrote in message <39eb121e@newsgroups.ni.com>...
> >
> >Has anyone taken sensor data off a whirling object? We have a test rig
> which
> >is a stationary whirling arm (similar to a helocopter rotor) to which we
> >mount specimens and expose to rain. I would like to put sensors (piezo
> film,
> >TC, etc.) on the tip and take the data off. So far my only idea is an
> infrared
> >data link in the blade's center.
> >Thanks...
> >Chuck Blair
> >Univ. of Dayton contractor
> >AFRL/MLSA Rain Erosion Test Technician
>
>

[Ronald]

Make sure that your signals aren't too weak. When using slip-rings it can
result in unusable data...

Ronald

Scott Seidman schreef in berichtnieuws
39eb4627@newsgroups.ni.com...
> Don't forget that whatever method you choose, you must somehow get power
to
> any sensors.
>
> Thus, you must have at least a pair of power slip rings, or you must have
a
> battery on board if you go the telemetry route.
>
> By the way, even if you have dozens of sensors, you can probably get by
with
> one multiplexed telemetry channel.
>
> Scott
>
>
> "Reed Blake" wrote in message
> news:39eb2cc1@newsgroups.ni.com...
> > Hi Chuck,
> > The traditional way to do this is with an inductive coupling or
> > slip rings. There
are a number products for the industrial
> > market available. Do a search on non-contact signal
> > transfer or short range telemetry.
> >
> > Here is a link to a manufacturers paper on non-contact
> > transmission:
> > http://www.manufacturing.net/magazine/dn/channels/tecpapr/baluff.htm
> >
> >
> > Optim Electronics Microdac looks like it will meet your
> > requirements.
> > http://www.optimelectronics.com/product_files/microdac.html
> >
> > These are just suggestions. I don't have any actual experience
> > in this area or with these specific products.
> > Regards,
> > Reed.
> >
> > Chuck wrote in message <39eb121e@newsgroups.ni.com>...
> > >
> > >Has anyone taken sensor data off a whirling object? We have a test rig
> > which
> > >is a stationary whirling arm (similar to a helocopter rotor) to which
we
> > >mount specimens and expose to rain. I would like to put sensors (piezo
> > film,
> > >TC, etc.) on the tip and take the data off. So far my only idea is an
> > infrared
> > >dat
a link in the blade's center.
> > >Thanks...
> > >Chuck Blair
> > >Univ. of Dayton contractor
> > >AFRL/MLSA Rain Erosion Test Technician
> >
> >
>
>