How do you automate the control of a room thermoelectric fan?

Question

WITAM, I have a question whether it is possible to create a control of a thermoventilator in a room based on such a scheme: basic temperature set e.g. 18 °C, when no one is present, a person enters, the thermoventilator turns on and raises the temperature e.g. 2 - 3 °C more. When the person...

sosarek · Answer

. You have suggested them yourself .

bolek11 · Answer

I don't have that much experience of what to connect to what and what I would need to create such a control and that is why I wrote a request on the forum for help in putting together the necessary components . The inspiration for the idea was such a fan heater with a motion sensor .

sosarek · Answer

There are a whole bunch of tutorials on the web on how to create a scene in Tuya, besides it would probably be cooler if a worker entered an already heated room. What's a thermo-fan?

vodiczka · Answer

The fan heater should be turned on to a higher temperature 15-30 min before the staff arrive and when they are not there, maintaining 16°C is sufficient. If you have fixed working hours, a timer control will suffice.

bolek11 · Answer

Thermo fan 230v 2000w wall mounted . Room occupancy varies and the timer does not come into use.

VPSA132 · Answer

Two motion sensors will be needed.
Rules in tuya:
1. turn on when motion appears on sensor #1 and there is no motion on #2 and keep it that way.
2. turn off when movement is on #2 and there is no movement on #1.
Sensor #1 will be inside the room and #2 behind the door, for example.
Sensor locations to be determined experimentally. Any delays are the same.
I have lighting firing done like this in one place. I have gone through several configurations and this one works best.

xury · Answer

And what if there are, say, 10 people hanging around? Will it switch on and off every now and then?
That's what human sensors are for, they detect "people" even when they don't move.
And there are even some for tuya.

VPSA132 · Answer

. You are right. However, we do not have data on this. The author has not written anything about it. It would be useful to specify whether the employees enter and leave in one group or as whoever wants.

bolek11 · Answer

The room is visited about 5 times at 10 minutes each for 16 hours, and for this reason the pattern of operation of the fan heater which gave me food for thought was as follows: the temperature was set at e.g. 20 degrees when someone entered the room, the motion sensor raised the temperature by 2 degrees for about 10 minutes, when the person left during the 10 minutes, the fan heater returned to 20 degrees and kept it that way. I know this from the owner, who had such a fan heater, but it got worn out and he brought it back from Norway, and that is why I want to copy this cycle of heating with a fan heater in my case.

vodiczka · Answer

Raising the temperature because someone stays for 10 minutes and not much longer sounds like a joke to me, unless the room is a loo and the fan is blowing cool air from outside during that time.

bolek11 · Answer

The time of the raised temperature lasted as long as the motion sensor saw the person, minimum 10 min (adjustable) to 20 min max.

vodiczka · Answer

and let him stay for 30 minutes, I thought you were writing about a room where people stay much longer and do sedentary work.
For light work and work carried out in office premises, the temperature must not be lower than +18°C, the recommended temperature in winter is 20-23°C.

bolek11 · Answer

I am closing the topic because some posts miss the question and do not contribute any hints to the solution of the topic.

[Solved] How do you automate the control of a room thermoelectric fan?

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