--- peter green <plugwash@P10Link.net> wrote:

> what are you using theese counts for?

Sounds like they want to check up on ticket sales vs cars in/cars out.
 
> do in cars and out cars take different routes?

Yep.

> 
> what accuracy do you need (e.g. what proportion of counts can you afford to
> gain/lose before the data becomes useless to you)

Basically, want to log all cars. The vehicles will be pretty close to the
sensor and slow moving (<15 k/h) so should give big magnetic sig? Path width
should be, say, <5metres. It's a sports event - as the car park fills up, they
move the poles, path and traffic wardens someplace else. Ditto car counter. So
you probly don't want a gizmo that needs turf dug up or dangles loops or is
fiddly to align. I'm thinking magnetic would be the way to go? Those Honeywell
sensors have analogue o/p but that wouldn't be a big drama.
Thanks -Debbie


		
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