jens
b7df7197ed
- simplified pid - pant cycle time 30 s git-svn-id: http://moon:8086/svn/projects/HendiControl@272 fda53097-d464-4ada-af97-ba876c37ca34
56 lines
1.2 KiB
Python
56 lines
1.2 KiB
Python
import numpy as np
|
|
import json
|
|
from aplant import APlant
|
|
from math import sqrt
|
|
from hendiCtrl import HendiCtrl
|
|
from max31865 import Max31865
|
|
|
|
class Plant(APlant):
|
|
def __init__(self):
|
|
self.heater = HendiCtrl('/dev/ttyUSB0', 115200)
|
|
self.tempsensor = Max31865()
|
|
self.P = 0
|
|
self.isOn = False
|
|
self.cycleTime = 30
|
|
self.dutyCycle = 1
|
|
self.cycleCounter = 0
|
|
|
|
def activate(self, enable=True):
|
|
if enable == True:
|
|
self.heater.remoteEnable(enable)
|
|
self.heater.setSwitch(enable)
|
|
else:
|
|
self.heater.setSwitch(enable)
|
|
self.heater.remoteEnable(enable)
|
|
|
|
def process(self, dt=1):
|
|
isOn = self.isOn
|
|
self.cycleCounter += dt
|
|
if self.cycleCounter >= self.cycleTime:
|
|
self.cycleCounter -= self.cycleTime
|
|
isOn = 0
|
|
|
|
if self.cycleCounter >= (self.cycleTime * (1-self.dutyCycle)):
|
|
if not isOn:
|
|
isOn = 1
|
|
|
|
if self.isOn != isOn:
|
|
if isOn:
|
|
self.heater.setSwitch(True)
|
|
else:
|
|
self.heater.setSwitch(False)
|
|
|
|
self.isOn = isOn
|
|
|
|
def setPower(self, power_w):
|
|
self.P = power_w
|
|
self.heater.setPowerWatts(max(500, power_w))
|
|
self.dutyCycle = min(1, power_w / 500)
|
|
|
|
def getPower(self):
|
|
return self.heater.getPowerWatts()
|
|
|
|
def getTemperature(self):
|
|
return self.tempsensor.temperature()
|
|
|