[s-cars] Blower squeak

[Taka Mizutani]

Re: IR sensors for climate control adjustment

I don't know what car you're referring to, but in both the V70 and the
Impreza, the IR sensors are at the base of the windshield, far, far forward
and pretty much out of reach. No interference from any hot coffee IME. In
all seriousness, I've never seen the effect that you mention.

Audi has gone to IR sensors in the dash as well- I haven't seen one of those
little air intakes on the dash since the C4 generation.

Taka


On 5/24/07, Joshua van Tol <josh at spiny.com> wrote:
>
> But the intellectual property required to make said IR sensors work
> worth a hoot is a major thing. Actually, using those air temp sensors
> to control comfort is a major thing as well, but it's different.
> Also, those IR sensors, superior though they are (with the right
> algorithm) are quite expensive. Also, did you ever notice what
> holding a cup of hot coffee in the line of sight of the sensor will do?
>
> I used to work in the biz doing software engineering on such systems,
> and it's really not trivial.
>
>
>
> On May 23, 2007, at 8:51 AM, Taka Mizutani wrote:
>
> > If they engineered it correctly, there would be a $50 mini-filter
> > for the
> > dash intake that requires dash removal to replace and about 18hrs.
> > of labor.
> > There would also be a monitoring device for the filter replacement
> > that
> > would beep at you incessantly in the auto-check system if said
> > filter was
> > not replaced and the monitor reset via VAG-COM.
> >
> > :-)
> >
> > The IR sensors on the Volvo and the Subaru seem to work fine w/o
> > any fancy
> > intake fans.....
> >
> > Taka
> >
> > On 5/23/07, Bill Noland <wenoland at pacbell.net> wrote:
> >>
> >> This design must have come from the engineering interns. Dirt is
> >> guaranteed to fall down the vent into the fan -- just like Timmy is
> >> guaranteed to fall down the well (and be subsequently rescued by
> >> Lassie).
> >>
> >> Bill N
> >>
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>
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