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Angular Hall Effect Sensor

 
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user9253



Joined: 28 Mar 2008
Posts: 1944
Location: Riley TWP Michigan
PostPosted: Thu Sep 27, 2012 5:59 pm    Post subject: Angular Hall Effect Sensor Reply with quote
Bob N,
The N305 Hall effect sensor is no longer available. It was specified in this article: "Angle of Attack Indicator" by Dave Barker.
http://www.aeroelectric.com/articles/Angle_of_Attack/2008_12_21.pdf
The author has substituted part number SS49. His updated article is available here: http://www.barkeraircraft.com/files/AOA_rDisplay.pdf
Now for my question:
Can the SS49 HALL sensor be used to sense the angular position of a control surface, specifically the horizontal stabilizer position on a Kitfox? The total angular movement is only about 10 degrees. Ray Allen sells a linear POT for $35 that could be used. But I thought that a Hall Effect sensor would be a more elegant solution with no moving parts, except for a magnet attached to the control surface. The Specs for the SS49 are available here:
http://sensing.honeywell.com/index.php?ci_id=3108&la_id=1&pr_id=36530
My friend who is building the Kitfox intends to install a Dynon SkyView EFIS. It has 5VDC available to power the SS49. The SkyView also has a dedicated input pin for elevator trim. Can the SS49 Hall sensor output be connected directly to the SkyView 0 to 5vdc input without any buffering or amplifying circuitry? The SkyView utilizes onscreen wizards for calibrating sensors.
Joe

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Joe Gores
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PostPosted: Fri Sep 28, 2012 7:43 am    Post subject: Angular Hall Effect Sensor Reply with quote
At 08:59 PM 9/27/2012, you wrote:
Quote:


Bob N,
The N305 Hall effect sensor is no longer available. It was
specified in this article: "Angle of Attack Indicator" by Dave Barker.
http://www.aeroelectric.com/articles/Angle_of_Attack/2008_12_21.pdf
The author has substituted part number SS49. His updated article is
available here: http://www.barkeraircraft.com/files/AOA_rDisplay.pdf
Now for my question:
Can the SS49 HALL sensor be used to sense the angular position of a
control surface, specifically the horizontal stabilizer position on
a Kitfox? The total angular movement is only about 10 degrees. Ray
Allen sells a linear POT for $35 that could be used. But I thought
that a Hall Effect sensor would be a more elegant solution with no
moving parts, except for a magnet attached to the control
surface. The Specs for the SS49 are available here:
http://sensing.honeywell.com/index.php?ci_id=3108&la_id=1&pr_id=36530
My friend who is building the Kitfox intends to install a Dynon
SkyView EFIS. It has 5VDC available to power the SS49. The SkyView
also has a dedicated input pin for elevator trim. Can the SS49 Hall
sensor output be connected directly to the SkyView 0 to 5vdc input
without any buffering or amplifying circuitry? The
SkyView utilizes onscreen wizards for calibrating sensors.
Joe

--------
Joe Gores


A few months ago there was some discussion on the
List about incorporating some precision, non-contact,
rotary motion transducers to some of our applications
on OBAM aircraft.

Well, I'm aware of one company who has already packaged
the Austria-Microsystems magnetic sensors into a potentiometer
like package.

http://tinyurl.com/73sb7tc

They sell for less $ than I can afford to make them.
We'll be considering them to replace LVDT's in a new
design for a flap actuator. Parts count for the
new versus old system will drop by 30% or more.

Further, the ball bearing version of this device is
tailor made for low-friction sensing of vanes driven
by slip-stream.

The article cited could be easily converted to a uC
based product that would probably fit into our
15-pin, A15 Package

http://tinyurl.com/9ydoldk

The same sort of philosophy and packaging could
be used for trim and/or flap position idication.

I.e. one set of hardware with options for firmware
would fit 3 different systems on the airplane.
Bob . . .

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