Hi all,
My situation is as follow:
I own multiple apartments in one block, witch are rented out. Those apartments share 1 main boiler for all the radiators, those radiators have their own valve so the temperature can be set by the renters themselves.
My issue:
Some renters forget to turn off their radiator when they leave the house. In addition some have their temperature set to high all the time.
I would like to automate this, so the radiator valve turns off when the house is empty. I just can’t figure out a fool-proof system for presence detection.
Wifi is not an option, bluetooth maybe, keypad can be forgotten and motion sensors aren’t doable (amount of sensors needed)
In addition, is there a way to measure “radiator usage” ? Maybe through temperature sensors?
Hope anyone has a genius idea for my problem…
p.s.: The main door (to enter the block) is opened by a rfid tag, so the renters are used to carry this tag on their key chain.