November
2004, Issue 172
Wi-Fi
Sunlogger
DATA
COLLECTION
The
module measures the voltage before and after the current
sense resistors. This way it can measure the current
provided when the panel is charging the charge/discharge
rate of the battery.
One
input is also connected to a thermistor to measure the
temperature inside the enclosure. Figure 2 shows the
details.
|
(Click
here to enlarge)
|
Figure
2—Here you see the solar output for one day (7 a.m.
to 7 a.m.). The solar output (panel voltage) rises
in the morning, and then dips during the day when
the house occludes the logger. So, obviously this
isn't a good location for a solar panel or collector. |
