sonar module weatherproofing question

Archiver

Hi Folks,

I'm working on an outdoor project that uses the Devantech module, and I need
some advice on outdoor protection. Has anyone come up with a good way to
protect the sensor from weather and vandals? Ideally, I'd put the sucker in
a
sealed box, but then I'd have other problems. I was thinking about a
plastic
film or wire mesh covering apertures in a sealed box, but I've got a feeling
that the sensor would keep seeing those.

Any ideas?

thanks,


d...

**************************************************************************
* David Okagaki dokagaki@w...
*
* "The light at the end of the tunnel is that of the on coming train!"
*
**************************************************************************

Archiver

Hi David,

We had ultrasonic condenser microphones outdoors for a bat study.
The microphone was mounted in a piece of PVC tube, facing downward
out the opening to protect it from rain. The tube was sealed at the
top of course. A piece of ceramic tile was mounted at 45 degrees
below the opening to serve as a reflector for sounds coming in from
the side. It worked quite well for that purpose.

-- Tracy


>Hi Folks,
>
>I'm working on an outdoor project that uses the Devantech module, and I need
>some advice on outdoor protection. Has anyone come up with a good way to
>protect the sensor from weather and vandals? Ideally, I'd put the sucker in
>a
>sealed box, but then I'd have other problems. I was thinking about a
>plastic
>film or wire mesh covering apertures in a sealed box, but I've got a feeling
>that the sensor would keep seeing those.
>
>Any ideas?
>
>thanks,
>
>
>d...
>
>**************************************************************************
>* David Okagaki dokagaki@w...
>*
>* "The light at the end of the tunnel is that of the on coming train!"
>*
>**************************************************************************

Archiver

The Devantech modules may have trouble with the tube -- I tried doing
something similar with one and it always reported a very short distance, not
the actual object distance. A larger tube may work though.

---

Original Message

---

> We had ultrasonic condenser microphones outdoors for a bat study.
> The microphone was mounted in a piece of PVC tube, facing downward
> out the opening to protect it from rain. The tube was sealed at the
> top of course. A piece of ceramic tile was mounted at 45 degrees
> below the opening to serve as a reflector for sounds coming in from
> the side. It worked quite well for that purpose.
>
> -- Tracy
>
>
> >Hi Folks,
> >
> >I'm working on an outdoor project that uses the Devantech module, and I
need
> >some advice on outdoor protection. Has anyone come up with a good way to
> >protect the sensor from weather and vandals? Ideally, I'd put the sucker
in
> >a
> >sealed box, but then I'd have other problems. I was thinking about a
> >plastic
> >film or wire mesh covering apertures in a sealed box, but I've got a
feeling
> >that the sensor would keep seeing those.