15.05.2017, 09:03
Hi,
accumulation needs to be done inside the ade7878.
The device is capable to do so, but calibration support is missing so far.
This is why I would be fine with an interval of a minute or so for accumulated data.
The issue I see with self-accumulation is that, accuracy is not reachable.
If we would increase measurement frequency from currently 0.2 Hz to 1Hz or even 10Hz,
accuracy would not increase much.
Transient effects when turning on/off concumers are much faster than this and we loose this information.
In other words averaging over 5secs results in similar poor accuracy than averaging over 1sec ... 0.1sec.
accumulation needs to be done inside the ade7878.
The device is capable to do so, but calibration support is missing so far.
This is why I would be fine with an interval of a minute or so for accumulated data.
The issue I see with self-accumulation is that, accuracy is not reachable.
If we would increase measurement frequency from currently 0.2 Hz to 1Hz or even 10Hz,
accuracy would not increase much.
Transient effects when turning on/off concumers are much faster than this and we loose this information.
In other words averaging over 5secs results in similar poor accuracy than averaging over 1sec ... 0.1sec.