Re: [Paparazzi-devel] IRs directions

[Maik Höpfel]

Hello Roman,

the docs are not perfect, but it's there:
http://paparazzi.enac.fr/wiki/Airframe_Configuration#Infrared

"The two channels of the horizontal sensor must give positive values
when it is warmer on the right side and the rear side. To adjust these
signs, use the following declarations:"

"Then, define how the horizontal sensor is connected to the airframe,
orientation aligned or tilted. In the aligned case, ir1 is along the
lateral axis (The axis that passes through the plane from wingtip to
wingtip) and ir2 along the longitudinal one. In the tilted case, the
sensors are tilted by 45 degrees; ir1 is along rear-left --
front-right, and ir2 along rear-right -- front-left. The parameter
"value" has no effect! If the airframe construction allows choose an
aligned sensor orientation since this gives the best stabilization
response results."

I know there's a thread of RCgroups where you could've found that
info, and I think there's some other wiki linked where that process is
described as well. I'm not speaking for the community but only myself,
and want to say this the nicest way possible, but I kindly ask you do
put a bit more effort into looking trough the available materials.
You're very welcome to improve the wiki yourself if you feel that it
is lacking. And please feel free to come back with more questions if
you're stuck.

Greetings from very hot Germany,
Maik



2010/7/12 Roman Nikitin <address@hidden>:
> Hi guys,
>
>
>
> I started to assemble my aircraft and to put the autopilot on it.
>
>
>
> How do I define where  the front and the back on the horizontal IR sensor? I
> would use tilted 45 degree sensor option. I found some descriptions if I
> would place the IR sensors parallel to the body axes.
>
>
>
> ·  everything will be done as if you are looking towards the REAR of the
> plane
>
> ·  put your finger UNDER the VERTICAL sensor, "int16 vertical" should go
> POSITIVE. If not, flip it around.
>
> ·  put your finger on each one of the horizontal sensors until "int16 ir1"
> goes POSITIVE. position it to the RIGHT.
>
> ·  put your finger on each one of the horizontal sensors until "int16 ir2"
> goes POSITIVE. position it FORWARD.
>
>
>
> Do you know how could I do it for tilted 45 degree option?
>
>
>
> Thank you.
>
>
>
> Regards,
>
>
>
> Roman
>
>
>
> Bristol Institute of Technology
>
> University of the West of England
>
> Aerospace Systems Engineering
>
> email: address@hidden
>
> Mob.: +44 (0) 7760806643
>
>
>
> P please consider the environment before printing this email.
>
>
>
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