Re: [mowbot] rf and acoustic
Monta Elkins (Monta nospam at vt.edu)
Thu, 17 Oct 1996 08:13:58 -0400
Wayne Talbot wrote:
>
> On 15 Oct 96 at 10:10, Monta Elkins wrote:
>
> > Looks like somebody's aready done
> > an RF - acoustic location "thing"
> > with resoulution to 12.7mm over 9.1 M^2
> >
> > -Monta
> snip...
> > active beacon. Inter-robot commu-nication is accomplished over the
> > same spread-spectrum channel using a time-division-multiple-ac-cess
> > scheme controlled by the base station. Principle sources of error
> > include variations in the speed of sound, the finite size of the
> > ultrasonic transducers, non-repetitive propagation delays in the
> > electronics, and ambiguities associated with time-of-arrival
> > detection. The cost for this system is $10,000.
> >
> At that price let's get two!!
:)
The point was (I assume you realize) that we might do something
similar though a lot less expensive.
BTW, I first sent that note a few(?) days ago; looks like
something maybe 'clogging up the pipes'
-Monta Elkins
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| "All that is necessary for evil to triumph is |
| for good men to do nothing." -- Edmund Burke |
| Monta nospam at bev.net ----------------- http://www.bev.net |
| System Administrator - Blacksburg Electronic Village |
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