Energy metering by pulse count

[ygi 0]

hi,

 

i am browsing several forums in order to find an answer, as i don't find any, here is my post.

 

i have servral electrical and water devices that generate pulses on consumption. this is called S0

for instance, the electrical modules generate 1000 pulses by kwh, and the water meter generates 1 pulse by 0,25 l

i would like to know if it exists a zwave counter that listen to these pulse, or if we can use the fgbs321 with lua code to listen to the pulses, but i don't know if zwave can be quick enought to react to several pulses per second.

 

how would you do that ?

 

thank you

 

yves

 

[j.nowacki 5]

I do not have knowledge of any Z-wave device (however I might be wrong) that would be capable of reading such short pulses. Do these devices have some visual indicator of the usage? Then check out Northq modules. Otherwise I would advise DIY solutions, like Arduino with Ethernet shield for example.

[stevenvd 51]

The NorthQ reader is indeed available for both energy and gas, not sure if it is available for water. These count pulses of for instance 100.000 pulses per kwh.

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[tnesheim 8]

I have the NorthQ NQ-9021 and it is supported by HC2, works fine. However, only basic functions are supported, yet. For now there are no apparent way to include the sensor in the eg Energy Panel which off course would be of great value if implemented.

[PGL 5]

The NorthQ reader is indeed available for both energy and gas, not sure if it is available for water. These count pulses of for instance 100.000 pulses per kwh.

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Do you have a VD you can share for the NorthQ readers?

Regards

[tnesheim 8]

Hello!

Sorry, I have not been into here for a while and I have apparently not seen the forum notification. Anyway, here is the VD:

 

local meterID=156

function getIcon(watt)

  if(watt > 8000) then return 149

  elseif(watt >= 7000) then return 148

  elseif(watt >= 7000) then return 147

  elseif(watt >= 6000) then return 150

  elseif(watt >= 5000) then return 146

  elseif(watt >= 4000) then return 145

  elseif(watt >= 3000) then return 144

  elseif(watt >= 2000) then return 143

  elseif(watt >= 1000) then return 142

  elseif(watt >= 500) then return 141

  else return 141 end

end

 

function round(num, idp)

  local mult = 10^(idp or 0)

  return math.floor(num * mult + 0.5) / mult

end

 

 

--Main start

 

e1=fibaro:getValue(meterID, "value")

t1=os.time()

etot=round(261009 + e1*0.01)

 

while e1==fibaro:getValue(meterID, "value") do end

 

e2=fibaro:getValue(meterID, "value")

t2=os.time()

 

td=t2-t1

ed=(e2-e1)*3.6

p=round(10000*ed/td)

 

 

fibaro:call(149, "setProperty", "ui.Label1.value", p.." W")

fibaro:call(149, "setProperty", "ui.Label2.value", etot.." kWh")

fibaro:call(149, "setProperty", "currentIcon", getIcon(p))

[krza 3]

2738 days since the last post ... a good day to ask for an update ... is there any news wrt reading the impulse output from an electricity meter? Any new devices or more clever solutions? Did not find something at the first glance, and the link above is also no longer existing.

 

 

Edit: Just found

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here from 2021 ... will check if it helps already ...

 

Edit 2: No, it does not really help. I saw that the Smart Implant was mentioned there and was wondering how that could work. But it obviously does not. At least not for electricity where you have too many pulses per second for high loads. And anyways, you would still need a sensor which get the actual pulses from the meter LED.

 

So the question is still open

Edited May 30, 2023 by krza