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+--- Thread: Thermostat script (/showthread.php?tid=4497)
Thermostat script - almoisey - 13.01.2023
Hello, can you please suggest how to create thermostat script with 3 thermo sensors in zone?
There are 3 thermosensors in 1 room- current temperaturete at a height of 1 meter , current temperaturete at a height of 2 meters, floor temperature to protect against overheating, setpoint temperature and control valve (1 bit output). Can I use the average temperature of the sensors at 1 and 2 meters? At what temperature should the overheating protection of the floor be activated? How to make the right heating control algorithm for underfloor heating / for radiators?
Best regards
A
RE: Thermostat script - admin - 19.01.2023
For several temperature sensors you can calculate the average and use it as a source temperature for PID regulator.
PID example: https://openrb.com/example-pid-thermostat-with-lm2/
It requires minor modifications to work with 1 bit output instead of 1 byte: https://forum.logicmachine.net/showthread.php?tid=386
To prevent overheating you can make a separate script that activates PID "manual" object and turns off the valve if the temperature raises above a certain level. The temperature limit depends on many factors like the sensor placement and flooring material.