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Calculate other energy usage using dzVents
Posted: Sunday 12 January 2020 14:18
by RduPre
Hi,
I measure the energy usage of many devices using zwave devices.
I also know the total usage collected from my P1 energy meter.
What I would like to calculate is how much energy I consume from devices I don't measure. So basically this would be the the P1 usage minus al usage of measured devices?
Can someone of you give me a quick start to get this doen ?
Many thanks in advance,
Rien
Re: Calculate other energy usage using dzVents
Posted: Monday 13 January 2020 1:26
by waaren
RduPre wrote: ↑Sunday 12 January 2020 14:18
What I would like to calculate is how much energy I consume from devices I don't measure. So basically this would be the the P1 usage minus al usage of measured devices?
Something like this ?
Code: Select all
return
{
on =
{
devices =
{
'Power', -- 'name' or id of your P1 device
},
},
execute = function(dz, item)
local usage = item.usage -- P1 usage
local allMeasured = { 679, 915, 2326 } -- id's of all measured devices
local delta = usage
for _, id in ipairs(allMeasured) do
delta = delta - ( dz.devices(id).actualWatt or dz.devices(id).WhActual ) -- depending on the version
end
dz.log('Usage by none measured power consumers = ' .. delta )
end
}
Re: Calculate other energy usage using dzVents [Solved]
Posted: Tuesday 14 January 2020 14:13
by RduPre
Hi,
I got it working, but due to the the realtime measurements are not at the same time of al devices, it's not accurate (sometimes even a negative value)
Is it possible to use the daily usage instead (see image below)
Re: Calculate other energy usage using dzVents
Posted: Tuesday 14 January 2020 16:36
by waaren
RduPre wrote: ↑Tuesday 14 January 2020 14:13
I got it working, but due to the the realtime measurements are not at the same time of al devices, it's not accurate (sometimes even a negative value)
Is it possible to use the daily usage instead ?
I guess this should do that (not tested)
Code: Select all
return
{
on =
{
devices =
{
'Power', -- 'name' or id of your P1 device
},
},
execute = function(dz, item)
local usage = item.counterToday -- P1 used Today
local allMeasured = { 679, 915, 2326 } -- id's of all measured devices
local delta = usage
for _, id in ipairs(allMeasured) do
delta = delta - ( dz.devices(id).counterToday )
end
dz.log('Usage by none measured power consumers = ' .. delta )
end
}