krishnakant Mane wrote:
hi,
yes, central server is the way to go this is what I was advicing from
quite some time.
Central server makes use of a computer and needs underground wiring or
expensive wireless network. Plus a power consumption of over 300 watts.
Local tiny broadcaster circuits are cost effective and maintainence
free. Install and forget. The choice is now FM or WLAN or Bluetooth as
per Dinesh's suggestion.
Why are we looking at solar panels and batteries? Like street lights,
these could be powered by the municipal electricity or traffic signal
posts. Maybe a battery backup for power breakdowns.
We also need to check out power consumptions of all the 3 devices
mentioned above for a TX. range of 5 feet only, not 100 feet.
What about a cheap laser diode pumping high density packets into a
receiver. The rail has a hollow docking port to simply place the
receiver's probe into it for a few seconds, so no shake problem. A beep
will tell the user that data is transferred. This will make it cheap and
will also function as the user position aligner.
Regards,
Rony.
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