Re: BIK Sensor - who is interested?

["Mark McCall" <mark@xxxxxxx>]

Very interesting Ian!

What is required for the Aerial?  Cables under carpet?

Thanks

M.


----- Original Message -----
From: "Ian B" <I.Bird@xxxxxxx>
To: <ukha_d@xxxxxxx>
Cc: <phillip.harris1@xxxxxxx>
Sent: Monday, March 26, 2001 11:59 AM
Subject: [ukha_d] BIK Sensor - who is interested?


> The testing I have done so far has revealed:
>
> 1) Your house earth has to be good as this is used as a reference when
the
> unit operates. (Ian's task number one - bury a large lump of stainless
> somewhere and connect it to the house earth. In the short term I am
watering
> my earth stake!!! Wifey thinks I am mad).
>
> 2) They are easier to set up and more accurate if you cover smaller
areas.
A
> large room would need more than one sensor - cool for location
sensing.
>
> 3) You can have more than one overlapping as the aerial length
determines
> the frequency (or something like that). Alter the aerial length
slightly
and
> there is no interferencebetween sensors.
>
> 4) They only detect presence within the aerials. When testing on the
kitchen
> table I could virtually touch the aerial from outside with no effect.
Move
> in between the wires and instant detection.
>
> 5) They detect in a sort of bubble shape between the two aerials. It
would
> detect my hand quite high above the kitchen table (read test bench)
but
> lower as I got nearer the aerials themselves.
>
> 6) They detect presence in one of two ways which means you can detect
> someone touching the ground or lying on the sofa but not both with the
same
> detector. You would need two, one for each activity.
>
> There is loads more info on the above points in the Bik documentation.
>
> Having looked at the board I made I would like to get all the
components
> together before finalising anything. I suspect it would be worth my
while
to
> recreate this circuit in my design package and then reproduce the
boards.
It
> may even be worth getting a batch made 'properly' if there is enough
> interest.
>
> Personally I like them so, send me a note if you're interested and I
will
> work with everyone to get some made.
>
> Ian
>
> -----Original Message-----
> From: Phillip Harris [mailto:phillip.harris1@xxxxxxx]
> Sent: 25 March 2001 16:14
> To: I.Bird@xxxxxxx
> Subject: RE: [ukha_d] BIK Sensor
>
>
>
> Could you possibly run up a board for me too? Let me know what I owe
you
for
> doing so if you can. Have you have problems sourcing any components?
> Occupancy sensing is proving to be a nightmare challenge!
>
> I know you said you had one of these already ... how good are they for
> sensing within a room? Do they have blind spots? Are they affected by
> movement in other rooms (given that they're RF I believe).
>
> > -----Original Message-----
> > From: Ian B [mailto:I.Bird@xxxxxxx]
> > Sent: 25 March 2001 14:33
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] BIK Sensor
> >
> >
> > In the process of making on now. I'll report back when it is
> > done. I am not
> > planning to assemble it, just make the board. I will send it off
to
Stuart
> > Grimshaw for the pleasure of building it.
> >
> > I have no doubt we will post details of how it went laeter.
> >
> > Kenneth: if you would like one of them then let me know and I
> > will make one
> > for you. The more the merrier...........
> >
> > Ian
> >
> > -----Original Message-----
> > From: Kenneth Watt [mailto:kennethwatt@xxxxxxx]
> > Sent: 25 March 2001 10:32
> > To: UKHA
> > Subject: [ukha_d] BIK Sensor
> >
> >
> > If anyone is having boards printed for this sensor please let me
know.
> >
> > Ta
> >
> > Kenneth
> >
> >
> >
> >
> >
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> >
> >
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