def __init__(self, parent=None):
# Set up device
self.dev = reflow.Reflow()
self.dev.set_pwm_period(PWM_PERIOD)
self.dev.set_mode('off')
temp = self.dev.get_therm_value()
# Create set point function
self.reflow_profile = reflow_profile.Reflow_Profile(start_T=temp)
stop_t = self.reflow_profile.stop_time()
# Setup controller
self.model = delay_model.Therm_Delay_Model(T_amb=temp)
self.model.load_param('model_param.pkl')
self.pgain = PGAIN
self.igain = IGAIN
self.controller = controller.PI_Controller(
self.reflow_profile.func,
self.pgain,
self.igain,
ff_func = self.model.ctl_for_steady_state
)
# Set Gui main window
QtGui.QWidget.__init__(self,parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# Connect buttons and checkbox
self.connect(self.ui.startButton, QtCore.SIGNAL('clicked()'), self.on_start_clicked)
self.connect(self.ui.stopButton, QtCore.SIGNAL('clicked()'), self.on_stop_clicked)
self.connect(self.ui.resetButton, QtCore.SIGNAL('clicked()'), self.on_reset_clicked)
self.connect(self.ui.controlCheckbox, QtCore.SIGNAL('clicked()'), self.on_control_clicked)
# Set up event timer
self.timer = QtCore.QTimer()
self.connect(self.timer, QtCore.SIGNAL('timeout()'), self.on_timer_update)
self.timer.setInterval(TIMER_INTERVAL)
self.timer.start()
# Set lcd display
self.update_lcd(temp)
# Set up plot - may want to autoset x axis scale
print stop_t
self.ui.tempPlot.setCanvasBackground(QtCore.Qt.black)
self.ui.tempPlot.setAxisTitle(Qwt.QwtPlot.xBottom, '(sec)')
self.ui.tempPlot.setAxisTitle(Qwt.QwtPlot.yLeft, '(C)')
self.ui.tempPlot.setAxisScale(Qwt.QwtPlot.xBottom, 0, 500, 100)
self.ui.tempPlot.setAxisScale(Qwt.QwtPlot.yLeft, 0, 300, 100)
# Setup setpoint curve
self.setp_curve = Qwt.QwtPlotCurve('')
self.setp_curve.setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
self.pen = QtGui.QPen(QtGui.QColor('limegreen'))
self.pen.setWidth(2)
self.setp_curve.setPen(self.pen)
self.setp_curve.attach(self.ui.tempPlot)
t = scipy.linspace(0.0, stop_t, 1000)
T = scipy.array([self.reflow_profile.func(tt-self.model.t_delay) for tt in t])
self.setp_curve.setData(t, T)
self.ui.tempPlot.replot()
# Set data curve
self.data_curve = Qwt.QwtPlotCurve('')
self.data_curve.setRenderHint(Qwt.QwtPlotItem.RenderAntialiased)
self.pen = QtGui.QPen(QtGui.QColor('red'))
self.pen.setWidth(2)
self.data_curve.setPen(self.pen)
self.data_curve.attach(self.ui.tempPlot)
self.state = 'stopped'
self.t0 = None
self.t_stop = None
self.t_offset = 0.0
self.update_status()
# Lists for time and temp samples
self.temp_samples = []
self.time_samples = []
