REFLECTOR:Secondary fire detection

[Fred Marconi]

SOME TYPE OF TEMPERATURE MEASURING DEVICE WOULD BE THE SIMPLEST WITH A
WARNING SIGNAL WHEN THE TEMPERATURE GETS ABOVE A CERTAIN LEVEL.  at THAT
POINT NO QUESTIONS ASKED CONSIDER THE HIGH TEMPERATURE A SIGN OF FIRE AND
LAND.

FRED

----- Original Message ----- 
From: "Hiroo Umeno" <humeno@microsoft.com>
To: <reflector@tvbf.org>
Sent: Thursday, July 17, 2003 2:45 PM
Subject: RE: REFLECTOR:Secondary fire detection


> Pat,
>
> CCDs are quite vulnerable to heat.  You need to look at the data sheets
> for the operating temperature range.  The heat inside the engine
> compartment is likely to far exceed the allowable heat rating of most
> low-cost CCDs.
>
> As for switcher, I am currently designing a 4:1 video mux based on
> LT1204 device and a PIC.  I am intending to put this in the same housing
> with the LCD so that there are four buttons that corresponds to each
> cams I can switch through.  The cool thing about using the PIC is that I
> can set it to "scan" every so often as well.
>
> I am thinking of mounting cams on the following locations.  Co-pilot
> side bottom winglet (180 degree pan), under nose looking forward-down,
> overhead duct capturing panel.
>
> For supplies of LCD panels, Earth Computing (www.earthlcd.com) usually
> has some good selection of them.  You can also scour some of the surplus
> electronics outlet and get a fairly good deal if you are not particular
> about specific device you are looking for.
>
> Hiroo
>
>
> -----Original Message-----
> From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org] On
> Behalf Of Pat Shea
> Sent: Thursday, July 17, 2003 11:23 AM
> To: reflector@tvbf.org
> Subject: RE: REFLECTOR:Secondary fire detection
>
> Hiroo,
>
> I'm leaning towards keeping the small CCD cams in the
> engine compartment primarily for fire detection. It
> looks like it's going to take two to get full coverage
> of the critical areas. There may also be some benefit,
> at least during the tweaking stage, of being able to
> see/record what's going on inside the cowl during
> flight (tuft testing?). Two cams either means an A/B
> switch, two monitors, or a split screen. I was able to
> find a company that sells a color, waterproof,
> "helmet" cam w/ a cool aluminum protective mount:
> www.helmetcamera.com. I haven't had a chance to look
> at LCD monitors yet (or the ability to split the
> screen) - any leads on a good source for these??
>
> Pat
>
> --- Hiroo Umeno <humeno@microsoft.com> wrote:
> > One idea may be to install the "wingtip cam".  I
> > have been researching
> > this but one could install a small CCD camera on the
> > wingtip (perhaps on
> > the lower winglet) that can be panned.  Not only it
> > would offer a way to
> > "see" if your cowl is blowing smoke / fire but it
> > will also serve as
> > "rear-view mirror" when starting engine, and offer a
> > feed for your
> > in-flight footage.
> >
> >
> >
> > The cameras can be had for less than $100 these
> > days, and a small LCD
> > monitors can be had for about the same.
> >
> >
> >
> > Hiroo
>
>
>
> __________________________________
> Do you Yahoo!?
> SBC Yahoo! DSL - Now only $29.95 per month!
> http://sbc.yahoo.com
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  tvbf:jamaicangoose
>
> _______________________________________________
> To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  tvbf:jamaicangoose
>