[time-nuts] GPS chicken tracker (slightly OT but sorta-not-really)

Bruce Griffiths bruce.griffiths at xtra.co.nz
Wed Dec 23 20:02:01 UTC 2009


The success of that will depend on the vegetation cover available to the 
chickens.
One problem is that at least some countries require that the time that 
the egg is laid be known to within a few hours.
Several day old eggs sitting in the heat of the sun cannot be sold.

Bruce

J. Forster wrote:
> Depending on the range area, if it could be monitored with TV cameras, a
> simple relaxation oscillator and IR LED on each chicken might work. They'd
> be tiny and light weight.
>
> The cameras could be equipped with narrow band pass optical filters and
> the video frames added up into say 10 minute integrated images in a PC.
> Because it's pulsed IR, it'd work both day and night.
>
> The integrated image would look like a trail of bread crumbs, interspersed
> with blobs where the chivcken stopped for a while.
>
> FWIW.,
> -John
>
> ==============
>
>
>
>
>    
>> Jim Palfreyman wrote:
>>      
>>> A friend of mine has asked me for a good GPS method to find out where
>>> his chickens are laying eggs.
>>>
>>> A GPS tracker comes to mind but some
>>> (http://www.coolest-gadgets.com/20060405/really-cool-portable-gps-tracker)
>>>    seem good but expensive.
>>>
>>> Does anyone have any cheap (and possibly smaller) alternatives?
>>>
>>> Regards,
>>>
>>> Jim Palfreyman
>>>
>>>
>>>        
>> Turn the problem on its head and fix a transmitter to each chicken.
>> One can then use range measurements from several antennas to track the
>> chickens, just assign a unique PRBS code to each transmitter.
>> You should be able to do all this with a SDR and some software.
>> This is likely to be cheaper per chicken than using a GPS tracker.
>>
>> Bruce
>>      
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>    






More information about the Time-nuts_lists.febo.com mailing list