Domoticz

EddyG wrote: ↑Thursday 07 September 2017 11:34 Perfect, 2.0.6 is running. Tnx.
I wonder if this data could be incorporated in the script to get a better fine tuning of the graph?
8NCCC -- Cloud type information
Especially the: N -- Amount of low clouds covering sky, if no low clouds, the amount of the middle clouds
This might be used to get a float for Octa.
This SYNOP information comes from http://weather.unisys.com/wxp/Appendice ... SYNOP.html
And my station 06260 supports this.

EddyG wrote: ↑Thursday 07 September 2017 13:38 Unfortunately this formula does not smooth things for me, because okta is fixed with some 9 (or 10?) different values.

Code: Select all

local oktaPercent = round(okta*100/8)

My whole intention is to get a better/smoother Lux value/graph

EddyG wrote: ↑Thursday 07 September 2017 16:34 My idea is that the number of cloud layers and the kind of clouds have impact on the Lux value as an extra.
I will investigate further how that could be an part of okta and oktaPercent.
I will let you know if I found some logic.

Luigi87 wrote: ↑Tuesday 03 October 2017 17:22 I now have the script running for a couple of weeks. and it's running very smooth.

But i see also in the data an output for the solar radiation.
As seen in my output below.

Is there a way to get this data also in a Virtual device? i would like to use this data in how strong the sunlight is (for my sunscreens)
...

			directRadiation = RadiationAtm * math.pow(0.6,M) * sinusSunAltitude
			scatteredRadiation = RadiationAtm * (0.271 - 0.294 * math.pow(0.6,M)) * sinusSunAltitude
			totalRadiation = scatteredRadiation + directRadiation
			Lux = totalRadiation / 0.0079  -- Radiation in Lux. 1 Lux = 0,0079 W/m²
			weightedLux = Lux * Kc   -- radiation of the Sun with the cloud layer

BakSeeDaa wrote: ↑Wednesday 04 October 2017 8:03

Luigi87 wrote: ↑Tuesday 03 October 2017 17:22 I now have the script running for a couple of weeks. and it's running very smooth.

But i see also in the data an output for the solar radiation.
As seen in my output below.

Is there a way to get this data also in a Virtual device? i would like to use this data in how strong the sunlight is (for my sunscreens)
...

I'm not the person who originally created the logic behind the calculations of this script.

To support a sensor using the value of "Direct Radiation" wouldn't be hard to implement but isn't that what the Lux sensor is supposed to be used for?

Weighted Lux (Which is used for the Lux sensor) is totalRadiation expressed as W/m² and compensated with the current cloud layer.
totalRadiation = scatteredRadiation + directRadiation

Code: Select all

			directRadiation = RadiationAtm * math.pow(0.6,M) * sinusSunAltitude
			scatteredRadiation = RadiationAtm * (0.271 - 0.294 * math.pow(0.6,M)) * sinusSunAltitude
			totalRadiation = scatteredRadiation + directRadiation
			Lux = totalRadiation / 0.0079  -- Radiation in Lux. 1 Lux = 0,0079 W/m²
			weightedLux = Lux * Kc   -- radiation of the Sun with the cloud layer

A Direct Radiation sensor wouldn't take the cloud layer into calculation and makes no sense to use such a value for anything unless we like to know how bright it theoretically would be if there was no cloud layer.

Mace wrote: ↑Thursday 05 October 2017 12:15 Script has been working fine for a couple of days, but today I started having the following error:
dzVents: Error: SOLAR 2.1.1: Could not read wuAPIData from file: /tmp/log/wuData.json
When I look at the file, it is 0kb...
What is going on?