Polling frequency

[HvdW]

Hi,

Domoticz is polling temperature (on my raspberry install).
It does so frequently.
Through RFXcom 433 mHz every 45 seconds
Through ESP8266 every 60 seconds.

This repeated high frequent polling gives problems in the thermostat script made by @dannybloe.
Link to post in forum.
Link to @dannybloe examples of dzVents, the last is the thermostat script which can be found here.
I adapted the timer from 1 minute to every 10 minutes, but the problem which arises is that the script is running every time that a new temperature measurement is coming in.
In that way setting the timer to 10 minutes has no effect and the script keeps running every 45 seconds or every 60 seconds.

You may ask why I want to set the timer to 10 minutes.
That is because the script calculates between the actual temperature and the average of the last few temperatures measured.
@dannubloe uses this method to temper and slow down the heating process.
As such this is smart programming, however by running the script every 45 seconds the intention of the script is killed after a few minutes because average will reach actual temperature in no time.

So this is why I want to know how I can regulate polling time of individual sensors like this temperature sensor.

[waaren]

So this is why I want to know how I can regulate polling time of individual sensors like this temperature sensor.

For most type of sensors there is no polling. The sensor "pushes" it's readings.
If you can send me the current script I will see if I can help with a workaround. You can send it via PM if you prefer.

[HvdW]

Hi waaren,
Thank you so much for your offer to help me.
The script is a dzVentz script from @dannyblue and my comment on it can be found here.
I just want the temperature sensor trigger to be denied.

I have another question on which I cannot find the answer on the forum.
A selector switch has an Off setting. Is it so that in the off situation all timer settings will be ignored?
Problem that I'm facing is that I can switch to off but I'm afraid the selector will activate one of its settings as soon as the timer will match it's time.
I can experiment, but an answer is easier.
If this off option doesn't switch off timer events automatically, maybe the developers of Domoticz could build that option into the selector switch properties.

[waaren]

The script is a dzVentz script from @dannyblue. I just want the temperature sensor trigger to be denied.

The script you point to is quite old. Please share the script you are using now and also state your domoticz version ?

A selector switch has an Off setting. Is it so that in the off situation all timer settings will be ignored?

No, the timer settings are not ignored. Off is just a state of the switch

[HvdW]

Here is the script as I'm using it.

Code: Select all

-- assumptions:
-- the setpoint is set by a selector dummy device where the values are numeric temperatures
-- but you can easily change it to a setpoint device

local BOILER_DEVICE = 'CV schakelaar' -- switch device
local SETPOINT_DEVICE = 'Thermostaat-setpoint' -- selector dummy device
local TEMPERATURE_SENSOR = 'Kamer-temp'
local HYSTERESIS = 0.3 -- temp has to drop this value below setpoint before boiler is on again
local SMOOTH_FACTOR = 5  --was 3
local LOGGING = true

return {
	    on = {
        devices = {	TEMPERATURE_SENSOR, SETPOINT_DEVICE},
        timer = {'every 10 minutes'}
    },
	
	data = {
		temperatureReadings = { history = true, maxItems = SMOOTH_FACTOR },
		lastUsed = { initial = {}}
	},
	
	active = true,
	execute = function(domoticz, device, triggerInfo)

		local avgTemp
		local temperatureReadings = domoticz.data.temperatureReadings
		local sensor = domoticz.devices(TEMPERATURE_SENSOR)
		local current = sensor.temperature
		local boiler = domoticz.devices(BOILER_DEVICE)
		local setpoint = domoticz.devices(SETPOINT_DEVICE)

        
		-- first check if the sensor got a new reading or the setpoint was changed:
		if (triggerInfo.type == domoticz.EVENT_TYPE_DEVICE) then

			if (sensor.changed) then
				-- sensor just reported a new reading
				-- add it to the readings table

				if (current ~= 0 and current ~= nil) then
					temperatureReadings.add(current)
				else
					-- no need to be here, weird state detected
					domoticz.log('Strange sensor reading.. skiping', domoticz.LOG_ERROR)
					return
				end

			elseif (domoticz.devices(SETPOINT_DEVICE).changed) then
				-- a new setpoint was set
				if LOGGING then domoticz.log('Setpoint was set to ' .. device.state) end
			else
				-- no business here, bail out...
				return
			end
		end

		-- now determine what to do
		if (setpoint.state == nil or setpoint.state == 'Off') then
			boiler.switchOff()
			return -- we're done here
		end

		local setpointValue = tonumber(setpoint.state)

		-- determine at which temperature the boiler should be
		-- switched on
		local switchOnTemp = setpointValue - HYSTERESIS

		-- don't use the current reading but average it out over
		-- the past <SMOOTH_FACTOR> readings (data smoothing) to get rid of noise, wrong readings etc
		local avgTemp = temperatureReadings.avg(1, SMOOTH_FACTOR, current) -- fallback to current when history is empty

		if LOGGING then
		    domoticz.log('Current temp: ' .. current, domoticz.LOG_INFO)
			domoticz.log('Average: ' .. avgTemp, domoticz.LOG_INFO)
			domoticz.log('Setpoint: ' .. setpointValue, domoticz.LOG_INFO)
			domoticz.log('Current boiler state: ' .. boiler.state, domoticz.LOG_INFO)
			domoticz.log('Switch-on temperature: ' .. switchOnTemp, domoticz.LOG_INFO)
		end

		if (avgTemp >= setpointValue and boiler.state == 'On') then
			if LOGGING then domoticz.log('Target temperature reached, boiler off') end
			boiler.switchOff()
		end

		if (avgTemp < setpointValue and boiler.state == 'Off') then
			if (avgTemp < switchOnTemp) then
				if LOGGING then domoticz.log('Heating is required, boiler switched on') end
				boiler.switchOn()
			else
				if LOGGING then domoticz.log('Average temperature below setpoint but within hysteresis range, waiting for temperature to drop to ' .. switchOnTemp) end
			end
	    end
    end
}

No, the timer settings are not ignored. Off is just a state of the switch

Pity, maybe a thought for future development?

[waaren]

Here is the script as I'm using it.

Added a check to see if the temperature sensor triggered the script not to soon.
can you please check ?

Code: Select all

--[[ 
 assumptions:
	the setpoint is set by a selector dummy device where the values are numeric temperatures
	or set by a setpoint dummy device
]]--

local BOILER_DEVICE = 'CV schakelaar' -- switch device
local SETPOINT_DEVICE = 'Thermostaat-setpoint' -- selector or setpoint dummy device
local TEMPERATURE_SENSOR = 'Kamer-temp'
local HYSTERESIS = 0.3 -- temp has to drop this value below setpoint before boiler is on again
local SMOOTH_FACTOR = 5  --was 3
local LOGGING = true

return {

		active = true,  -- No longer needed in current dzVents versions ( default is true )
		
		on = 
		{
			devices = {	TEMPERATURE_SENSOR, SETPOINT_DEVICE},
			timer = {'every 10 minutes'}
		},
	
		data = 
		{
			temperatureReadings = { history = true, maxItems = SMOOTH_FACTOR },
			lastSetTemperature = { initial = {} },
			lastUsed = { initial = {} },			-- This does not seem to be used
		},

	execute = function(domoticz, item) -- changed to item as it can be timer or device

		local temperatureReadings = domoticz.data.temperatureReadings
		local sensor = domoticz.devices(TEMPERATURE_SENSOR)
		local current = sensor.temperature
		local boiler = domoticz.devices(BOILER_DEVICE)
		local setpoint = domoticz.devices(SETPOINT_DEVICE)
		local minSensorTime = 600 -- minimum amount of seconds between adding temperature sensor values to temperatureReadings 
		
		-- first check if the sensor got a new reading or the setpoint was changed:
		if item.isDevice then
			if item == sensor then
				-- sensor reported a reading ==>> Check if it is not too soon
				if ( domoticz.data.lastSetTemperature[sensor.name] or 0 ) > ( domoticz.time.dDate - minSensorTime ) then
					-- Too soon after last sensor reading; quit
					if LOGGING then domoticz.log('Temperature reading ignored. Too soon after last one') end
				   	return
				elseif current and current ~= 0 then
					-- add it to the readings table
					temperatureReadings.add(current)
					domoticz.data.lastSetTemperature[sensor.name] = domoticz.time.dDate
				else
					-- no need to be here, weird state detected
					domoticz.log('Strange sensor reading.. skiping', domoticz.LOG_ERROR)
					return
				end
			elseif item == setpoint then
				-- a new setpoint was set
				if LOGGING then domoticz.log('Setpoint was set to ' .. item.state) end
			else
				-- no business here, bail out...
				return
			end
		end

		-- get setpointValue 
		local setpointValue 
		if setpoint.deviceSubType == "SetPoint" then 
			setpointValue = setpoint.setPoint
		elseif setpoint.state and setpoint.state ~= 'Off' then
			setpointValue = tonumber(setpoint.state)
		else
			boiler.switchOff() -- no setpoint or setpoint == Off
			return -- we're done here
		end	

		-- determine at which temperature the boiler should be
		-- switched on
		local switchOnTemp = setpointValue - HYSTERESIS

		-- don't use the current reading but average it out over
		-- the past <SMOOTH_FACTOR> readings (data smoothing) to get rid of noise, wrong readings etc
		local avgTemp = temperatureReadings.avg(1, SMOOTH_FACTOR, current) -- fallback to current when history is empty

		if LOGGING then
			domoticz.log('Current temp: ' .. current, domoticz.LOG_INFO)
			domoticz.log('Average: ' .. avgTemp, domoticz.LOG_INFO)
			domoticz.log('Setpoint: ' .. setpointValue, domoticz.LOG_INFO)
			domoticz.log('Current boiler state: ' .. boiler.state, domoticz.LOG_INFO)
			domoticz.log('Switch-on temperature: ' .. switchOnTemp, domoticz.LOG_INFO)
		end

		if (avgTemp >= setpointValue and boiler.state == 'On') then
			if LOGGING then domoticz.log('Target temperature reached, switching boiler to Off') end
			boiler.switchOff()
		elseif (avgTemp < setpointValue and boiler.state == 'Off') then
			if (avgTemp < switchOnTemp) then
				if LOGGING then domoticz.log('Heating is required, switching boiler to On') end
				boiler.switchOn()
			else
				if LOGGING then domoticz.log('Average temperature below setpoint but within hysteresis range, waiting for temperature to drop to ' .. switchOnTemp) end
			end
		else
			-- no action required
			if LOGGING then domoticz.log('No action required') end
		end
	end
}

[HvdW]

Here is the answer from the log.

Code: Select all

  2019-05-20 22:19:19.135 Status: dzVents: Info: Temperature reading ignored. Too soon after last one
2019-05-20 22:19:19.136 Status: dzVents: Info: ------ Finished Verwarming
2019-05-20 22:19:27.777 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:19:37.769 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:19:47.784 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:19:57.783 (Slimme meter) P1 Smart Meter (Stroom)
[b]2019-05-20 22:20:00.141 Status: dzVents: Info: ------ Start internal script: Verwarming:, trigger: every 10 minutes[/b]
2019-05-20 22:20:00.163 Status: dzVents: Info: Current temp: 21.799999237061
2019-05-20 22:20:00.163 Status: dzVents: Info: Average: 21.720000076294
2019-05-20 22:20:00.163 Status: dzVents: Info: Setpoint: 20.5
2019-05-20 22:20:00.163 Status: dzVents: Info: Current boiler state: Off
2019-05-20 22:20:00.163 Status: dzVents: Info: Switch-on temperature: 20.2
2019-05-20 22:20:00.163 Status: dzVents: Info: No action required
2019-05-20 22:20:00.164 Status: dzVents: Info: ------ Finished Verwarming
2019-05-20 22:20:04.009 (RFXtfx) Temp + Humidity (Room-temp)
2019-05-20 22:20:04.131 Status: dzVents: Info: Handling events for: "Room-temp", value: "21.8;59;1"
2019-05-20 22:20:04.131 Status: dzVents: Info: ------ Start internal script: Verwarming: Device: "Room-temp (RFXtfx)", Index: 3
2019-05-20 22:20:04.134 Status: dzVents: Info: Temperature reading ignored. Too soon after last one
2019-05-20 22:20:04.135 Status: dzVents: Info: ------ Finished Verwarming
2019-05-20 22:20:07.773 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:20:10.098 (RFXtfx) Temp (Buiten)
2019-05-20 22:20:17.783 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:20:21.389 (Zonnepanelen) General/Voltage (Volt uac1)
2019-05-20 22:20:21.391 (Zonnepanelen) General/Percentage (Efficiency)
2019-05-20 22:20:21.393 (Zonnepanelen) General/Percentage (Hz)
2019-05-20 22:20:21.395 (Zonnepanelen) General/Percentage (BT_Signal)
2019-05-20 22:20:21.397 (Zonnepanelen) Temp (Temperature)
2019-05-20 22:20:21.403 (Zonnepanelen) Energy (Zonnepanelen)
2019-05-20 22:20:27.773 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:20:37.778 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:20:47.784 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:20:47.794 (Slimme meter) P1 Smart Meter (Gas)
2019-05-20 22:20:49.010 (RFXtfx) Temp + Humidity (Room-temp)
2019-05-20 22:20:49.140 Status: dzVents: Info: Handling events for: "Room-temp", value: "21.8;59;1"
2019-05-20 22:20:49.140 Status: dzVents: Info: ------ Start internal script: Verwarming: Device: "Room-temp (RFXtfx)", Index: 3
2019-05-20 22:20:49.143 Status: dzVents: Info: Temperature reading ignored. Too soon after last one
2019-05-20 22:20:49.144 Status: dzVents: Info: ------ Finished Verwarming
2019-05-20 22:20:57.790 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:21:07.778 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:21:17.783 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:21:27.791 (Slimme meter) P1 Smart Meter (Stroom)
2019-05-20 22:21:34.013 (RFXtfx) Temp + Humidity (Room-temp)
2019-05-20 22:21:34.165 Status: dzVents: Info: Handling events for: "Room-temp", value: "21.8;59;1"
[b]2019-05-20 22:21:34.166 Status: dzVents: Info: ------ Start internal script: Verwarming: Device: "Room-temp (RFXtfx)", Index: 3[/b]
2019-05-20 22:21:34.172 Status: dzVents: Info: Current temp: 21.799999237061
2019-05-20 22:21:34.172 Status: dzVents: Info: Average: 21.759999847412
2019-05-20 22:21:34.172 Status: dzVents: Info: Setpoint: 20.5
2019-05-20 22:21:34.172 Status: dzVents: Info: Current boiler state: Off
2019-05-20 22:21:34.172 Status: dzVents: Info: Switch-on temperature: 20.2
2019-05-20 22:21:34.172 Status: dzVents: Info: No action required
2019-05-20 22:21:34.173 Status: dzVents: Info: ------ Finished Verwarming
2019-05-20 22:21:37.781 (Slimme meter) P1 Smart Meter (Stroom)
 

Great!
It's a great step forward.
One thing is missing; both triggers operate completely independent from each other.
Can you give me a tip on how to reset the temperature trigger after the 10 minute trigger has been executed?
Or rather the code because this addition you did is magic for me for the greater part.
See 22:20:00 and 22:21:34
I know of one way out and that is setting the temperature time to 11 minutes or so.
By doing so the timer always is in charge.
Maybe the two triggers will sync on the long run even when the temperature trigger time is set to 601 seconds.

I had found this preventing-from-execution-code somewhere else on this forum and have tried several times, more than several times to insert it in the script.
The only effect my code injection had was that I could conclude that it was the perfect way of either refusing to run or generating lots of errors in the log files.
Anyway, even that was a nice experience.

[waaren]

One thing is missing; both triggers operate completely independent from each other.

If you want to align the adding the temperature reading to the list with the timer, why not just take it completely out as trigger and add the reading to the list when the script is triggered by the timer. Something like this

Code: Select all

--[[ 
 assumptions:
	the setpoint is set by a selector dummy device where the values are numeric temperatures
	or set by a setpoint dummy device
]]--

local BOILER_DEVICE = 'CV schakelaar' -- switch device
local SETPOINT_DEVICE = 'Thermostaat-setpoint' -- selector or setpoint dummy device
local TEMPERATURE_SENSOR = 'Kamer-temp'
local HYSTERESIS = 0.3 -- temp has to drop this value below setpoint before boiler is on again
local SMOOTH_FACTOR = 5  --was 3
local LOGGING = true

return 
{
	active = true,  -- No longer needed in current dzVents versions ( default is true )

	on = 
	{
		devices = {  SETPOINT_DEVICE },
		timer = {'every 10 minutes'}
	},

	data = 
	{
		temperatureReadings = { history = true, maxItems = SMOOTH_FACTOR },
		lastSetTemperature = { initial = {} },
		lastUsed = { initial = {} },			-- This does not seem to be used
	},

	execute = function(domoticz, item) -- changed to item as it can be timer or device

		local temperatureReadings = domoticz.data.temperatureReadings
		local sensor = domoticz.devices(TEMPERATURE_SENSOR)
		local current = sensor.temperature
		local boiler = domoticz.devices(BOILER_DEVICE)
		local setpoint = domoticz.devices(SETPOINT_DEVICE)

		if item.isTimer then  -- triggered by timer
			temperatureReadings.add(current) -- add temperature from sensor to the array
		end

		-- get setpointValue 
		local setpointValue 
		if setpoint.deviceSubType == "SetPoint" then 
			setpointValue = setpoint.setPoint
		elseif setpoint.state and setpoint.state ~= 'Off' then
			setpointValue = tonumber(setpoint.state)
		else
			boiler.switchOff() -- no setpoint or setpoint == Off
			return -- we're done here
		end	

		-- determine at which temperature the boiler should be
		-- switched on
		local switchOnTemp = setpointValue - HYSTERESIS

		-- don't use the current reading but average it out over
		-- the past <SMOOTH_FACTOR> readings (data smoothing) to get rid of noise, wrong readings etc
		local avgTemp = temperatureReadings.avg(1, SMOOTH_FACTOR, current) -- fallback to current when history is empty

		if LOGGING then
			domoticz.log('Current temp: ' .. current, domoticz.LOG_INFO)
			domoticz.log('Average: ' .. avgTemp, domoticz.LOG_INFO)
			domoticz.log('Setpoint: ' .. setpointValue, domoticz.LOG_INFO)
			domoticz.log('Current boiler state: ' .. boiler.state, domoticz.LOG_INFO)
			domoticz.log('Switch-on temperature: ' .. switchOnTemp, domoticz.LOG_INFO)
		end

		if (avgTemp >= setpointValue and boiler.state == 'On') then
			if LOGGING then domoticz.log('Target temperature reached, switching boiler to Off') end
			boiler.switchOff()
		elseif (avgTemp < setpointValue and boiler.state == 'Off') then
			if (avgTemp < switchOnTemp) then
				if LOGGING then domoticz.log('Heating is required, switching boiler to On') end
				boiler.switchOn()
			else
				if LOGGING then 
					domoticz.log('Average temperature below setpoint but within hysteresis range, waiting for temperature to drop to ' .. switchOnTemp) 
				end
			end
		else
			-- no action required
			if LOGGING then domoticz.log('No action required') end
		end
	end
}

Please ask if anything in the code (syntax or choices) is not clear. I am happy to (try to) clarify / discuss.