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mainwindow.py
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# PyPV
#
# Copyright (C) 2015 Daniel Fernandez Pinto
# 2015-2017 Ilario Gelmetti <[email protected]>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from PyQt4 import uic
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import matplotlib.pyplot as plt
from numpy import *
import os
import unicodedata
import VICurves
from time import sleep
import datetime
from multiprocessing import Process
import Keithley2400
TEST_MODE = False # for test mode comment out also "import Keithley2400"
(Ui_MainWindow, QMainWindow) = uic.loadUiType('mainwindow.ui')
NUM_CURRENT_POINTS = 3
CURRENT_POSITIVE = 0
IRRADIANCE_UNIT_MULTIPLIER = 0.001
def plot_graph(
imageName, voltage, adjCurrent, voltageMaxPower,
currentMaxPower, Voc, printVoc, Jsc, JscDensity, FF, efficiency,
saveImage, directory):
fig = plt.figure(imageName)
fig.suptitle(imageName, fontsize=14, fontweight='bold')
ax = fig.add_subplot(111)
fig.subplots_adjust(top=0.85)
ax.set_xlabel('Voltage (V)')
ax.set_ylabel('Current (mA)')
ax.plot(voltage, adjCurrent)
ax.plot(voltageMaxPower, currentMaxPower, 'ro')
if printVoc:
ax.plot(Voc, 0, 'r+')
ax.plot(0, Jsc, 'r+')
ax.axhline(0, color='k')
ax.axvline(0, color='k')
ymin, ymax = plt.ylim()
ax.set_yticks(
arange(
int(min(minimum(adjCurrent, -2)) * 2),
int(max(maximum(adjCurrent, 2)) * 2), 0.5),
minor='True')
ax.yaxis.grid(True, which='minor')
ax.set_ylim(ymin, ymax)
xmin, xmax = plt.xlim()
ax.set_xticks(arange(-20, 20, 0.2), minor='True')
ax.xaxis.grid(True, which='minor')
ax.set_xlim(xmin, xmax)
legend = (
"Voc " + Voc + " V\nJsc " + JscDensity + " mA/cm2\nFF " + FF +
"\nEfficiency " + efficiency + " %")
ax.text(
0.05, 0.05, legend, verticalalignment='bottom',
horizontalalignment='left', transform=ax.transAxes, fontsize=14,
bbox=dict(facecolor='pink', alpha=0.9, pad=10))
if saveImage:
imageNameWithDirectory = os.path.join(directory, imageName)
plt.savefig(imageNameWithDirectory + ".png")
plt.close()
else:
plt.show()
class MainWindow (QMainWindow):
"""MainWindow inherits QMainWindow"""
def __init__(self, parent=None):
if not TEST_MODE:
print("Checking if Keithley is connected...")
QMainWindow.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
if os.path.isfile('last_configuration.lnk'):
with open('last_configuration.lnk') as f:
conf = f.read().splitlines()
extendedConf = 0
self.applyConf(conf, extendedConf)
self.connect(
self.ui.runButton, SIGNAL('clicked()'),
SLOT('clickMeasure_IV()'))
self.connect(
self.ui.vocButton, SIGNAL('clicked()'),
SLOT('clickMeasure_V()'))
self.connect(
self.ui.stopButton, SIGNAL('clicked()'),
SLOT('clickStop()'))
self.connect(
self.ui.saveAsButton, SIGNAL('clicked()'),
SLOT('clickSaveAs()'))
self.connect(
self.ui.autoSaveButton, SIGNAL('clicked()'),
SLOT('clickAutoSave()'))
self.connect(
self.ui.runListButton, SIGNAL('clicked()'),
SLOT('clickRunList()'))
self.connect(
self.ui.runAutoMeasureButton, SIGNAL('clicked()'),
SLOT('clickAutoMeasure()'))
self.connect(
self.ui.autoScale_check, SIGNAL('clicked()'),
SLOT('clickAutoScale()'))
self.connect(
self.ui.stepV_edit, SIGNAL('editingFinished()'),
SLOT('calcScanSpeed()'))
self.connect(
self.ui.integrationTime_edit, SIGNAL('editingFinished()'),
SLOT('calcScanSpeed()'))
self.connect(
self.ui.delayTime_edit, SIGNAL('editingFinished()'),
SLOT('calcScanSpeed()'))
self.isTriggerOpen = False
if not TEST_MODE:
self.smu = Keithley2400.K2400()
self.smu.text("Welcome to PyPV")
self.smu.subtext("")
self.smu.shutterClose()
sleep(2)
self.smu.setlocal()
self.currentUnitMultiplier = 1000
self.ui.data_table.setColumnCount(10)
labels = (
'Device', 'Diode', 'Reverse?', 'Jsc', 'Voc', 'FF',
'efficiency', 'int time', 'delay', 'irradiance')
self.ui.data_table.setHorizontalHeaderLabels(labels)
self.date = datetime.date.today()
self.showImage = 1
self.currentImagePid = 0
self.terminateCurrentImage = 0
self.unsavedData = False
logHeader = self.date, ""
with open("measurements_log.txt", 'a') as f_handle:
savetxt(f_handle, logHeader, fmt='%s')
self.calcScanSpeed()
def applyConf(self, conf, extendedConf):
self.ui.user_edit.setText(str(conf[0]))
self.ui.experiment_edit.setText(str(conf[1]))
self.ui.startV_edit.setText(str(conf[2]))
self.ui.endV_edit.setText(str(conf[3]))
self.ui.stepV_edit.setText(str(conf[4]))
self.ui.compliance_edit.setText(str(conf[5]))
self.ui.scale_combo.setCurrentIndex(int(conf[6]))
self.ui.integrationTime_edit.setText(str(conf[7]))
self.ui.cellArea_edit.setText(str(conf[8]))
if extendedConf:
self.ui.autoScale_check.setCheckState(int(conf[9]))
self.ui.irradiance_edit.setText(str(conf[10]))
self.ui.device_edit.setText(str(conf[11]))
self.ui.diode_spin.setValue(int(conf[12]))
self.ui.reverse_check.setCheckState(int(conf[13]))
self.ui.autoSaveImages_check.setCheckState(int(conf[14]))
self.ui.preDelayOff_edit.setText(int(conf[15]))
self.ui.preDelayOn_edit.setText(int(conf[16]))
def __del__(self):
print("Saving conf...")
try:
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
except:
user = "guest"
experiment = "exp1"
closingConf = (
user, experiment, self.ui.startV_edit.text(),
self.ui.endV_edit.text(), self.ui.stepV_edit.text(),
self.ui.compliance_edit.text(),
str(self.ui.scale_combo.currentIndex()),
self.ui.integrationTime_edit.text(),
self.ui.cellArea_edit.text())
with open('last_configuration.lnk', 'w') as f_handle:
savetxt(f_handle, closingConf, fmt='%s')
sleep(0.5)
self.ui = None
@pyqtSlot()
def clickMeasure_IV(self):
self.ui.LCD_Jsc.setDigitCount(5)
self.ui.LCD_Voc.setDigitCount(5)
self.ui.LCD_PCE.setDigitCount(5)
self.ui.LCD_FF.setDigitCount(5)
try:
self.startV = float(self.ui.startV_edit.text())
self.endV = float(self.ui.endV_edit.text())
self.reverse = int(self.ui.reverse_check.isChecked())
self.stepV = float(self.ui.stepV_edit.text())
self.compliance = float(self.ui.compliance_edit.text())
autoScale = int(self.ui.autoScale_check.isChecked())
if autoScale:
self.scale = False
else:
self.scale = float(self.ui.scale_combo.currentText())
self.integrationTime = float(self.ui.integrationTime_edit.text())
self.delayTime = float(self.ui.delayTime_edit.text())
self.cellArea = float(self.ui.cellArea_edit.text())
self.preDelayOff = float(self.ui.preDelayOff_edit.text())
self.preDelayOn = float(self.ui.preDelayOn_edit.text())
except:
print "Values must be valid numbers"
if self.unsavedData:
unsavedAnswer = QMessageBox.warning(
self, "Unsaved Measurement",
"There is an unsaved measurement. Do you really want to "
"continue with next measurement?",
QMessageBox.Yes | QMessageBox.Abort, QMessageBox.Yes)
if unsavedAnswer == QMessageBox.Yes:
self.unsavedData = False
endVstartV = self.startV * self.endV
if endVstartV <= 0:
crossingZero = True
else:
crossingZero = False
crossingAnswer = QMessageBox.question(
self,
"Scan not Crossing Zero Voltage",
"The specified voltage scanning range does not cross "
"zero, are you sure the range is ok?",
QMessageBox.Yes | QMessageBox.Abort, QMessageBox.Yes)
if crossingAnswer == QMessageBox.Yes:
crossingZero = True
if crossingZero and not self.unsavedData:
if TEST_MODE:
testFile = "test/good-1-1-reverse.txt"
# testFile = "test/bad-1-1-forward.txt"
# testFile = "test/ugly-1-1-forward.txt"
self.voltage, self.current = loadtxt(
testFile, skiprows=25,
unpack=True)
self.current = self.current / self.currentUnitMultiplier
else:
self.smu.reset()
if self.preDelayOff:
subtext = "Shutter Delay Off %s s" % str(self.preDelayOff)
print subtext
self.smu.subtext(subtext)
sleep(self.preDelayOff)
self.smu.shutterOpen()
if self.preDelayOn:
subtext = "Shutter Delay On %s s" % str(self.preDelayOn)
print subtext
self.smu.subtext(subtext)
sleep(self.preDelayOn)
self.smu.removetext()
self.smu.removesubtext()
if self.reverse:
data = self.smu.measureIV(
self.endV, self.startV,
-self.stepV, self.compliance,
self.scale, self.integrationTime,
self.delayTime)
else:
data = self.smu.measureIV(
self.startV, self.endV,
self.stepV, self.compliance,
self.scale, self.integrationTime,
self.delayTime)
self.smu.shutterClose()
self.voltage, self.current = (
array(data['voltage']),
array(data['current']))
data2 = self.voltage, self.current * self.currentUnitMultiplier
self.data3 = transpose(data2)
savetxt('last_measurement_raw.txt', self.data3)
self.unsavedData = True
self.setSaved(0)
(self.maxPower, self.jsc, tempVoc, tempFf, self.voltageMaxPower,
self.currentMaxPower) = VICurves.extractdata(
self.voltage, self.current * (CURRENT_POSITIVE * 2 - 1))
self.voc = "%.4g" % (tempVoc)
self.ff = "%.3g" % (tempFf)
self.jscDensity = "%.4g" % (self.jsc * self.currentUnitMultiplier /
self.cellArea)
self.currentMaxPowerDensity = "%.4g" % (
self.currentMaxPower *
self.currentUnitMultiplier /
self.cellArea)
self.calcEfficiencyAndSetLCDs()
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
if self.reverse:
self.reverseText = "reverse"
else:
self.reverseText = "forward"
self.maxVoltage = self.voltage.max()
self.minVoltage = self.voltage.min()
self.save(
'last_measurement.txt', user, experiment, device, diode,
cellArea, irradiance)
if not float(irradiance):
self.printVoc = 0
else:
self.printVoc = 1
if (
tempVoc < self.minVoltage or
tempVoc > self.maxVoltage or
self.current[0] /
abs(self.current[0]) == self.current[-1] /
abs(self.current[-1])):
self.printVoc = 0
QMessageBox.warning(
self, "Voc not reached",
"This scan didn't pass by the Voc! You should "
"repeat the measurement using a wider voltage "
"range.",
QMessageBox.Ok, QMessageBox.Ok)
if self.showImage:
saveImage = 0
self.makeImage(saveImage, "")
@pyqtSlot()
def clickMeasure_V(self):
self.isTriggerOpen = True
self.ui.LCD_Voc.setDigitCount(5)
while self.isTriggerOpen:
voltage = self.measure_V()
self.ui.LCD_Voc.display(voltage)
print(voltage)
QApplication.processEvents()
def measure_V(self):
self.smu.reset()
self.smu.removetext()
self.smu.removesubtext()
self.smu.shutterOpen()
measurements = self.smu.measureVoltage(5, 10.0, 0, 5)
voltage = average(measurements["voltage"])
self.smu.shutterClose()
return voltage
@pyqtSlot()
def clickStop(self):
self.isTriggerOpen = False
@pyqtSlot()
def clickRunList(self):
fileName = QFileDialog.getOpenFileName(
self, 'Open Parameters List File')
if os.path.isfile(fileName):
print(fileName)
self.isTriggerOpen = True
conf = genfromtxt(str(fileName), skip_header=1, dtype='str')
extendedConf = 1
self.showImage = 1
self.terminateCurrentImage = 1
for i in range(len(conf)):
self.applyConf(conf[i], extendedConf)
if not self.isTriggerOpen:
break
self.displayDiode()
self.clickMeasure_IV()
self.clickAutoSave()
waitBeforeNext = int(conf[i][17])
if waitBeforeNext:
self.saveProblem = False
subtext = "Waiting for user interaction"
print subtext
self.smu.subtext(subtext)
continueWithNextAnswer = QMessageBox.question(
self, "Next measurements block",
"A block of measurements is completed, should "
"continue with the next ones?",
QMessageBox.Yes | QMessageBox.Abort,
QMessageBox.Yes)
if continueWithNextAnswer == QMessageBox.Abort:
self.terminateCurrentImage = 0
self.smu.subtext("Measurements list completed")
break
self.terminateCurrentImage = 0
self.smu.subtext("Measurements list completed")
@pyqtSlot()
def clickAutoMeasure(self):
self.isTriggerOpen = True
self.showImage = 1
self.terminateCurrentImage = 1
self.ui.LCD_Voc.setDigitCount(5)
self.ui.reverse_check.setCheckState(0)
maxVoltages = [0, 0, 0, 0]
for i in (0, 1, 2, 3):
self.ui.diode_spin.setValue(int(i) + 1)
self.displayDiode()
voltage = self.measure_V()
self.smu.shutterClose()
if voltage < float(self.ui.startV_edit.text()):
lowVocAnswer = QMessageBox.warning(
self, "Voc lower than starting V",
"The measured Voc is lower than the starting scan "
"voltage. Check the cable connections or the lower "
"voltage parameter. Do you want to perform anyway "
"this measurement?",
QMessageBox.Yes | QMessageBox.Cancel,
QMessageBox.Cancel)
if lowVocAnswer == QMessageBox.Cancel:
break
approxVoltage = "%.1f" % (float(voltage))
maxVoltages[i] = max(0, float(approxVoltage)) + 0.2
self.ui.endV_edit.setText(str(maxVoltages[i]))
self.ui.reverse_check.setCheckState(0)
QApplication.processEvents()
self.clickMeasure_IV()
self.clickAutoSave()
QApplication.processEvents()
self.ui.reverse_check.setCheckState(1)
self.clickMeasure_IV()
self.clickAutoSave()
QApplication.processEvents()
self.terminateCurrentImage = 0
self.smu.subtext("Measure completed")
def displayDiode(self):
QApplication.processEvents()
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
self.smu.reset()
self.smu.removetext()
self.smu.removesubtext()
text = "Select diode " + diode
print text
self.smu.text(text)
subtext = "Device " + device
self.smu.subtext(subtext)
sleep(0.7)
d = 0
while(d < int(diode)):
self.smu.beep2()
sleep(0.35)
d += 1
sleep(0.5)
self.smu.beep()
sleep(0.2)
self.smu.beep()
sleep(1)
@pyqtSlot()
def clickSaveAs(self):
self.calcEfficiencyAndSetLCDs()
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
suggestedFileName = self.makeAutoName(
experiment, device, diode, irradiance) + ".txt"
fileName = QFileDialog.getSaveFileName(
self, 'Save VI Curve', suggestedFileName, 'Text files (*.txt)')
if fileName:
fileNameTxt = str(fileName)
self.save(
fileNameTxt, user, experiment, device, diode, cellArea,
irradiance)
self.setSaved(1)
self.unsavedData = False
self.pastFileName = fileNameTxt
print fileNameTxt
self.fillTable(device, diode)
self.fillLogFile(user, experiment, device, diode)
logContent = (
"SaveAs by " + str(user) + " experiment " +
str(experiment) + " in file " + str(fileName), "")
with open("measurements_log.txt", 'a') as f_handle:
savetxt(f_handle, logContent, fmt='%s')
@pyqtSlot()
def clickAutoSave(self):
# https://hynek.me/articles/hasattr/#fnref:sentinel
test = getattr(self, "data3", None)
if test is None:
QMessageBox.warning(
self, "No data", "There is still no data to save.",
QMessageBox.Ok, QMessageBox.Ok)
else:
self.calcEfficiencyAndSetLCDs()
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
directory = os.path.join(user, str(self.date))
if not os.path.exists(directory):
os.makedirs(directory)
fileName = (
self.makeAutoName(experiment, device, diode, irradiance) +
".txt")
fileNameWithDirectory = os.path.join(directory, fileName)
self.saveProblem = True
if not self.unsavedData:
saveAgainAnswer = QMessageBox.question(
self, "Data Already Saved",
"This data was already saved in file " +
self.pastFileName +
". Maybe you should go and check if is better to "
"delete that file, anyway do you want to save this "
"data again in file " +
fileNameWithDirectory +
"?", QMessageBox.Yes | QMessageBox.Cancel,
QMessageBox.Yes)
if saveAgainAnswer == QMessageBox.Yes:
self.saveProblem = False
if os.path.exists(fileNameWithDirectory):
self.saveProblem = True
overwriteAnswer = QMessageBox.question(
self, "File Already Existing",
"There is already a file with name " + fileName +
". Do you really want to overwrite this file?",
QMessageBox.Yes | QMessageBox.Cancel, QMessageBox.Yes)
if overwriteAnswer == QMessageBox.Yes:
self.saveProblem = False
else:
self.saveProblem = False
if not self.saveProblem:
self.save(
str(fileNameWithDirectory), user, experiment, device,
diode, cellArea, irradiance)
self.setSaved(1)
autoSaveText = (
"Measurement saved in " + str(fileNameWithDirectory))
print(autoSaveText)
self.unsavedData = False
self.pastFileName = fileNameWithDirectory
logContent = (
"AutoSave by " + user + " experiment " +
experiment + " in file " + str(fileNameWithDirectory) +
" including results:", "")
with open("measurements_log.txt", 'a') as f_handle:
savetxt(f_handle, logContent, fmt='%s')
self.fillTable(device, diode)
self.fillLogFile(user, experiment, device, diode)
self.fillMeasurementsFile(directory, experiment, device, diode)
if self.ui.autoSaveImages_check.isChecked():
saveImage = 1
self.makeImage(saveImage, directory)
@pyqtSlot()
def clickAutoScale(self):
if self.ui.autoScale_check.isChecked():
self.ui.scale_combo.setEnabled(False)
else:
self.ui.scale_combo.setEnabled(True)
def checkFileName(self, fileName):
# https://stackoverflow.com/questions/9532499/check-whether-a-path-is-valid-in-python-without-creating-a-file-at-the-paths-ta
if not os.access(fileName, os.W_OK):
fileNameOk = False
try:
open(fileName, 'w').close()
os.unlink(fileName)
fileNameOk = True
except IOError:
QMessageBox.warning(
self, "Error while saving file",
"Can't save the required file:\n" + fileName +
"\nEliminate the special characters in the User, "
"Experiment and Device fields.",
QMessageBox.Ok, QMessageBox.Ok)
else:
fileNameOk = True
return fileNameOk
def save(
self, fileName, user, experiment, device, diode, cellArea,
irradiance):
# this handles also saving of last_measurement.txt
if self.checkFileName(fileName):
with open(fileName, 'w') as f_handle:
savetxt(f_handle, self.makeHeader(
user, experiment, device, diode, cellArea,
irradiance), fmt='%s')
with open(fileName, 'a') as f_handle:
savetxt(f_handle, self.data3, fmt='%g \t%g')
def makeImage(self, saveImage, directory):
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
imageName = self.makeAutoName(experiment, device, diode, irradiance)
if self.currentImagePid:
if self.terminateCurrentImage:
if not saveImage:
self.currentImage.terminate()
p = Process(target=plot_graph, args=(
imageName, self.voltage,
- self.current * self.currentUnitMultiplier,
self.voltageMaxPower,
self.currentMaxPower * self.currentUnitMultiplier, self.voc,
self.printVoc, self.jsc * self.currentUnitMultiplier,
self.jscDensity, self.ff, self.efficiency, saveImage,
directory))
p.start()
if not saveImage:
self.currentImage = p
self.currentImagePid = int(p.pid)
def makeAutoName(self, experiment, device, diode, irradiance):
if float(irradiance) == 0:
fileName = (
experiment + "-" + device + "-" + diode + "-dark-" +
self.reverseText)
else:
if float(irradiance) == 100:
fileName = (
experiment + "-" + device + "-" + diode + "-" +
self.reverseText)
else:
fileName = (
experiment + "-" + device + "-" + diode + "-" +
str(float(irradiance)/100) + "sun-" +
self.reverseText)
return fileName
def getDeviceIdentification(self):
try:
user = unicodedata.normalize(
'NFD', unicode(self.ui.user_edit.text())).encode(
'ascii', 'ignore')
experiment = unicodedata.normalize(
'NFD', unicode(self.ui.experiment_edit.text())).encode(
'ascii', 'ignore')
device = unicodedata.normalize(
'NFD', unicode(self.ui.device_edit.text())).encode(
'ascii', 'ignore')
diode = str(int(self.ui.diode_spin.value()))
cellArea = str(self.ui.cellArea_edit.text())
irradiance = str(self.ui.irradiance_edit.text())
except:
QMessageBox.warning(
self, "Error reading parameters",
"Please check the user, experiment, device, diode, "
"cellArea and irradiance data fields", QMessageBox.Ok,
QMessageBox.Ok)
return user, experiment, device, diode, cellArea, irradiance
def getDarkData(self, irradiance, cellArea, compliance):
parallelResistance = VICurves.calcParallelResistance(
self.voltage, self.current * (CURRENT_POSITIVE * 2 - 1))
seriesResistance = VICurves.calcSeriesResistance(
self.voltage, self.current * (CURRENT_POSITIVE * 2 - 1),
compliance, self.reverse)
darkOutput = (
"Serie Resistance (Ohm): " + str(seriesResistance) +
" Parallel Resistance (Ohm): " +
str(parallelResistance))
return darkOutput
def setSaved(self, saved):
if saved:
self.ui.saved.setText("Saved")
self.ui.saved.setStyleSheet('color: green')
else:
self.ui.saved.setText("Not saved")
self.ui.saved.setStyleSheet('color: red')
def calcEfficiencyAndSetLCDs(self):
self.irradiance = float(self.ui.irradiance_edit.text())
(user, experiment, device, diode, cellArea,
irradiance) = self.getDeviceIdentification()
if self.irradiance:
self.efficiency = "%.3f" % float("%.4g" % (100 * (
(float(self.maxPower) / float(cellArea)) /
(float(self.irradiance) * IRRADIANCE_UNIT_MULTIPLIER))))
else:
self.efficiency = "0"
self.ui.LCD_Jsc.display(self.jscDensity[0:5])
self.ui.LCD_Voc.display(self.voc[0:5])
self.ui.LCD_FF.display(self.ff[0:4])
self.ui.LCD_PCE.display(self.efficiency[0:5])
@pyqtSlot()
def calcScanSpeed(self):
if TEST_MODE:
self.scanSpeed = 0
else:
stepV = float(self.ui.stepV_edit.text())
integrationTime = float(self.ui.integrationTime_edit.text())
delayTime = float(self.ui.delayTime_edit.text())
self.scanSpeed = "%.3g" % (
self.smu.scanSpeed(stepV, integrationTime, delayTime))
scanSpeedText = str(self.scanSpeed) + " V/s"
self.ui.scanSpeed_label.setText(scanSpeedText)
def fillTable(self, device, diode):
self.ui.data_table.insertRow(0)
self.ui.data_table.setItem(0, 0, QTableWidgetItem(str(device)))
self.ui.data_table.setItem(0, 1, QTableWidgetItem(str(diode)))
self.ui.data_table.setItem(0, 2, QTableWidgetItem(self.reverseText))
self.ui.data_table.setItem(
0, 3, QTableWidgetItem(str(self.jscDensity[0:5])))
self.ui.data_table.setItem(0, 4, QTableWidgetItem(str(self.voc[0:5])))
self.ui.data_table.setItem(0, 5, QTableWidgetItem(str(self.ff[0:4])))
self.ui.data_table.setItem(
0, 6, QTableWidgetItem(str(self.efficiency[0:5])))
self.ui.data_table.setItem(
0, 7, QTableWidgetItem(str(self.integrationTime)))
self.ui.data_table.setItem(0, 8, QTableWidgetItem(str(self.delayTime)))
self.ui.data_table.setItem(
0, 9, QTableWidgetItem(str(self.irradiance)))
self.ui.data_table.resizeColumnsToContents()
def fillMeasurementsFile(self, directory, experiment, device, diode):
measurementsFileName = (
"iv_measurements-" + str(experiment) + "-" +
str(self.date) + ".txt")
measurementsFileNameWithDirectory = os.path.join(
directory, measurementsFileName)
if self.checkFileName(measurementsFileNameWithDirectory):
if not os.path.exists(measurementsFileNameWithDirectory):
measurementsFileHeader = (
"exp device diode rev/fwd Jsc Voc FF "
"efficiency intTime delay irradiance", "")
with open(measurementsFileNameWithDirectory, 'w') as f_handle:
savetxt(f_handle, measurementsFileHeader, fmt='%s')
if os.path.isfile(measurementsFileNameWithDirectory):
measurementsFileContent = (
str(experiment) + " " +
str(device) +
" " + str(diode) + " " + str(self.reverseText) +
" " + str(self.jscDensity) + " " + str(self.voc) +
" " + str(self.ff) + " " + str(self.efficiency) +
" " + str(self.integrationTime) + " " +
str(self.delayTime) + " " + str(self.irradiance), "")
with open(measurementsFileNameWithDirectory, 'a') as f_handle:
savetxt(f_handle, measurementsFileContent, fmt='%s')
def fillLogFile(self, user, experiment, device, diode):
logContent = (
str(user) + " " + str(experiment) + " " + str(device) +
" " + str(diode) + " " + str(self.reverseText) + " " +
str(self.jscDensity) + " " + str(self.voc) + " " +
str(self.ff) + " " + str(self.efficiency) + " " +
str(self.integrationTime) + " " + str(self.delayTime) + " " +
str(self.irradiance), "")
with open("measurements_log.txt", 'a') as f_handle:
savetxt(f_handle, logContent, fmt='%s')
def makeHeader(
self, user, experiment, device, diode, cellArea,
irradiance):
darkOutput = self.getDarkData(
irradiance, cellArea, float(self.compliance))
return (
"PyPV software (Gr. E. Palomares, ICIQ) - Voltage-Current "
"measurement Report", "User: " +
user, "Date: " + str(self.date) + " Time: " +
str(datetime.datetime.now().strftime("%H:%M:%S")),
"Experiment: " + experiment, "Device: " + device,
"Diode: " + diode, "Forward or reverse? " + self.reverseText,
"Lowest Voltage (V): " + str(self.minVoltage),
"Highest Voltage (V): " + str(self.maxVoltage),
"Voltage Step (V): " + str(self.stepV), "Compliance (A): " +
str(self.compliance), "Scale (A): " + str(self.scale),
"Voltage of maximum power point (V): " +
str(self.voltageMaxPower) +
" Current density of MPP (mA/cm2): " +
str(self.currentMaxPowerDensity), "Integration Time: " +
str(self.integrationTime) + " Scan Speed (V/s): " +
str(self.scanSpeed), "Delay Time (s): " +
str(self.delayTime) + " ShutterDelayOff (s): " +
str(self.preDelayOff) + " ShutterDelayOn (s): " +
str(self.preDelayOn), darkOutput, "Cell Area (cm2): " +
cellArea, "Irradiance (mW/cm2): " + irradiance,
"Jsc (mA/cm2): " + str(self.jscDensity), "Voc (V): " +
str(self.voc), "Fill factor: " + str(self.ff),
"Efficiency (%): " + str(self.efficiency),
"Voltage_V \tCurrent_mA")