Hey thanks again!
Let me try to answer those questions:
How far are the sensors apart?
it varies pretty much. We could go from 35-40 meters to many km.
How often do they need to sample?
This doesn't have to be done very often: I'd say every 5 to 10 minutes.
What is the expected precision?
I wouldn't know of to "measure" this, put it into words. It has to be decent, the more consisten, the better
What is the expected accuracy?
This is not an issue.. I could tollerate a -+ 1 cm.
Should a timestamp be included?
A timestamp 'could' be included but it's not a requirements.
What if a sample is wrong?
If a sample is wrong is just discarded, no biggie. we'll examine the next sample.
WHat if a sample is missed?
Same as above, no big deal.
WHat powersupply do you intend to use?
Power supply i have no preference. A battery of some sort, but it does not really mater. Although it might be cool for future add on, a possibility to use a small solar panel to recharge it.
Do you need watertight casing?
well, this could be useful indeed! I knew we'd have needed a case of some sort.
Do you need other sensordata as well? (often there is a need but people don't say that ...)
Well, it'd be very very useful to a a gps in order to provide our location when sending the data.
What are the operating conditions? Temperature, Humidity etc.
This will be outdoor but inside an involucre.so it'll be shielded from all (or most) of the atmospheric agents. But just in case it'd be nice a watertight case (if this doesn't cost crazy)
(be aware that the speed of sound is altered by temperature and humidity in a non-linear way which mangles your distance readings ... --->> Is this the case of infrared as well? I'd have thought only ultrasonic sensor would be afflicted by this.
Did I allready say you need extra sensors?..
Yes you did!
THank you so much for the moment!