REFLECTOR:Secondary fire detection

[reflector@tvbf.org]

Try http://www.protectowire.com/products/protectowirelhd.htm

I don't know what temperature rating you'd want, it might be different in 
different parts of the engine compartment.


At 12:48 AM 7/18/03 -0400, Fred Marconi wrote:
>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
> >
> >
> >
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