Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Solar Power
#1
Hi Guys,

Now that the major issues with the design are more or less mitigated, i started thinking on what would be the next level.
Up to now i've consistently avoided using batteries, as this adds another level of complexity. So i decided to pay some skilled freelancer to do the schematic design this time. The question is what would be the requirements for a battery powered device. What i am thinking of is:

- Power consumption of a wireless device is in the range of 2-8 ma/h (send each 10 min, vs each 2 min), mostly consumed by the Wifi module while sending data - for 3-4 seconds @ 250ma/h.
- The CO2 sensor consumes ~ 8ma/h while active, and it takes ~60 seconds to get stable results, so if it is switche on each 5 minutes for 1 minute, this would reduce it to 1-2 ma/h
- Temperature sensor does not consume anything

So this totals to about 50-100 mah per day

Standard AA cells have 2000 MA, C cells have 5000, D cells have 10000
14500 lipos have ~1000 ma
18650 can have up to 5000 ma

So now in any case the device has a limited lifetime before the batteries are dead.

This is why i started wondering - what if i add also some 5x5cm solar panel. If it can deliver up to 10-20ma per hour during the day (even if not every day) this would be enough to cover the daily consumption.

Has any of you thought about this?
I saw a similar comment of Rene Arts in one forum. But maybe others have also thought about this

Regards, Vladimir
Reply


Messages In This Thread
Solar Power - by admin - 12-14-2016, 02:00 PM
RE: Solar Power - by René Arts - 12-14-2016, 04:01 PM
RE: Solar Power - by admin - 12-15-2016, 03:08 PM
RE: Solar Power - by René Arts - 12-19-2016, 09:15 AM

Forum Jump:


Users browsing this thread: 1 Guest(s)