kopia lustrzana https://github.com/jbruce12000/kiln-controller
146 wiersze
5.4 KiB
Plaintext
146 wiersze
5.4 KiB
Plaintext
import logging
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from lib.max31856 import MAX31856
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########################################################################
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#
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# General options
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### Logging
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log_level = logging.INFO
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log_format = '%(asctime)s %(levelname)s %(name)s: %(message)s'
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### Server
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listening_ip = "0.0.0.0"
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listening_port = 8081
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### Cost Estimate
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kwh_rate = 0.1319 # Rate in currency_type to calculate cost to run job
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currency_type = "$" # Currency Symbol to show when calculating cost to run job
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########################################################################
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#
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# GPIO Setup (BCM SoC Numbering Schema)
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#
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# Check the RasPi docs to see where these GPIOs are
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# connected on the P1 header for your board type/rev.
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# These were tested on a Pi B Rev2 but of course you
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# can use whichever GPIO you prefer/have available.
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### Outputs
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gpio_heat = 23 # Switches zero-cross solid-state-relay
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### Thermocouple Adapter selection:
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# max31855 - bitbang SPI interface
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# max31856 - bitbang SPI interface. must specify thermocouple_type.
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max31855 = 1
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max31856 = 0
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# see lib/max31856.py for other thermocouple_type, only applies to max31856
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thermocouple_type = MAX31856.MAX31856_S_TYPE
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### Thermocouple Connection (using bitbang interfaces)
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gpio_sensor_cs = 27
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gpio_sensor_clock = 22
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gpio_sensor_data = 17
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gpio_sensor_di = 10 # only used with max31856
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########################################################################
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#
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# duty cycle of the entire system in seconds
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#
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# Every N seconds a decision is made about switching the relay[s]
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# on & off and for how long. The thermocouple is read
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# temperature_average_samples times during and the average value is used.
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sensor_time_wait = 2
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########################################################################
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#
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# PID parameters
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#
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# These parameters control kiln temperature change. These settings work
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# well with the simulated oven. You must tune them to work well with
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# your specific kiln. Note that the integral pid_ki is
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# inverted so that a smaller number means more integral action.
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# from experimentation
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#pid_kp = 10 # Proportional
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#pid_ki = 50 # Integral
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#pid_kd = 100 # Derivative
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# from ZN tuning
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pid_kp = 3.0662264423638184
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pid_ki = 61.295706065671204
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pid_kd = 144.07164331295013
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########################################################################
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#
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# Initial heating and Integral Windup
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#
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# During initial heating, if the temperature is constantly under the
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# setpoint,large amounts of Integral can accumulate. This accumulation
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# causes the kiln to run above the setpoint for potentially a long
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# period of time. These settings allow integral accumulation only when
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# the temperature is close to the setpoint. This applies only to the integral.
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stop_integral_windup = True
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########################################################################
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#
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# Simulation parameters
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simulate = False
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sim_t_env = 60.0 # deg C
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sim_c_heat = 100.0 # J/K heat capacity of heat element
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sim_c_oven = 5000.0 # J/K heat capacity of oven
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sim_p_heat = 5450.0 # W heating power of oven
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sim_R_o_nocool = 1.0 # K/W thermal resistance oven -> environment
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sim_R_o_cool = 0.05 # K/W " with cooling
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sim_R_ho_noair = 0.1 # K/W thermal resistance heat element -> oven
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sim_R_ho_air = 0.05 # K/W " with internal air circulation
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########################################################################
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#
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# Time and Temperature parameters
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#
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# If you change the temp_scale, all settings in this file are assumed to
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# be in that scale.
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temp_scale = "f" # c = Celsius | f = Fahrenheit - Unit to display
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time_scale_slope = "h" # s = Seconds | m = Minutes | h = Hours - Slope displayed in temp_scale per time_scale_slope
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time_scale_profile = "m" # s = Seconds | m = Minutes | h = Hours - Enter and view target time in time_scale_profile
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# emergency shutoff the profile if this temp is reached or exceeded.
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# This just shuts off the profile. If your SSR is working, your kiln will
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# naturally cool off. If your SSR has failed/shorted/closed circuit, this
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# means your kiln receives full power until your house burns down.
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# this should not replace you watching your kiln or use of a kiln-sitter
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emergency_shutoff_temp = 2264 #cone 7
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# If the kiln cannot heat or cool fast enough and is off by more than
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# kiln_must_catch_up_max_error the entire schedule is shifted until
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# the desired temperature is reached. If your kiln cannot attain the
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# wanted temperature, the schedule will run forever. This is often used
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# for heating as fast as possible in a section of a kiln schedule/profile.
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kiln_must_catch_up = True
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kiln_must_catch_up_max_error = 10 #degrees
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# thermocouple offset
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# If you put your thermocouple in ice water and it reads 36F, you can
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# set set this offset to -4 to compensate. This probably means you have a
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# cheap thermocouple. Invest in a better thermocouple.
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thermocouple_offset=0
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# some kilns/thermocouples start erroneously reporting "short"
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# errors at higher temperatures due to plasma forming in the kiln.
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# Set this to False to ignore these errors and assume the temperature
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# reading was correct anyway
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honour_theromocouple_short_errors = False
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# number of samples of temperature to average.
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# If you suffer from the high temperature kiln issue and have set
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# honour_theromocouple_short_errors to False,
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# you will likely need to increase this (eg I use 40)
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temperature_average_samples = 40
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# Thermocouple AC frequency filtering - set to True if in a 50Hz locale, else leave at False for 60Hz locale
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ac_freq_50hz = False
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