Weather station & RF telemetry project

[jim97]

Hi

I've got an idea for a radio telemetry 'weather station' project and I'd like some help to get me started in the right direction. The proect is in three parts.

1) Air temperature and windspeed measurement approx 5m above ground level... every 1 second.
The temperature measurement needs to particularly sensitive as I'm trying to measure differences in air temperature caused by ground level thermal bubbles as they move through on the wind.

2) Radio telemetry of this information to a base station approx 150m away.

3) Display results in realtime on a 'palm pilot' type device, at the base station, as scrolling graph(s). I'm thinking some kind of java applet.

If thats not enough to bite off ... I actually want to measure the wind\temperature at 3 positions. Upwind 150m from base station. At the base station itself. Downwind 150m from the base station. So the 'palm pilot' will have 6 realtime traces. The wind and temperature don't actually have to be calibrated to the real temperature and wind speed. Its more comparative analysis between the stations that I'm looking at.

Can anyone help with setting me off in the right direction on these 3 different streams

Thanks

Jim

[CCH Concepts]

personally i would approach this with a microcontroller creating packets i.e.

sync bit 1
posistion 1 date sample
sync bit 2
posistion 2 date sample
sync bit 3
posistion 3 date sample

this would be sent down a serial bus to a trasmitter. this could quiet easilly be done via UART as most microcontroller have a UART output. this way it should be alot easier to program in assembely code.