CycleTemp.py

# -*- coding: utf-8 -*-
from __future__ import annotations
import time 
from math import sin
from math import pi

from pioreactor.automations.temperature import Thermostat

class CycleTemp(Thermostat):
    """
    Use  24hr temperature cycle
    """
    
    automation_name = "cycle_temp"
    published_settings = {
        "target_temperature": {"datatype": "float", "unit": "℃", "settable": False}
    }

    def __init__(self, **kwargs) -> None:
        self.bias_temperature = 35
        self.amplitude = 5
        initial_target_temperature = self.get_new_target_temperature()
        super().__init__(target_temperature=initial_target_temperature, **kwargs)

    def get_new_target_temperature(self):
        current_seconds_in_day = time.time() % (60 * 60 * 24)

        return self.bias_temperature + self.amplitude * sin(2 * pi * current_seconds_in_day  / (60 * 60 * 24))

    def execute(self):
        new_temp = self.get_new_target_temperature()
        self.target_temperature = new_temp
        self.logger.debug(f"Setting target temp to {self.target_temperature=}")
        super().execute()