Re: Re: Measuring bath water depth

["Dave McLaughlin" <dave@xxxxxxx>]

Hi Frank,

I can hear the output from the Milford one. They had it as a demo of
radar
at an air show one time and you could hear the clicking of the
transducer.
The guy was trying to tell me you could not hear it and I was hearing
the
motor. I think not!!! :o)

Dave...
PS... Can bus on part hold as I am developing an AVLS system at the
moment.
Before someone asks, this is vehicle location.

----- Original Message -----
From: "Frank Mc Alinden" <armagh@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, August 12, 2002 2:10 PM
Subject: Re: [ukha_d] Re: Measuring bath water depth


> Hi Dave
>
> >Perhaps it would be hoping for too much to convert this into
an
> > ultrasound room radar for occupancy detection? :-)
> Back in the early mid eighties ultrasonics sensors were quite
popular.
Thry
> did have some drawbacks though , for instance in a room with no
furnishings
> they were quite sensitive but when you put carpets etc the
ultrasonics
would
> get absorbed by the soft  furnishings. Also some people could
hear the
> ultrasonic transmitters .......I think they are still in use not to
the
> extent of pir,s.......
>
> Frank Mc
>
> ps Hows the can bus going

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