Jan
df69d0e832
Thread Safety Violations:
Qt objects (like QWidgets) must only be accessed from the main thread (GUI thread)
Your measurement thread is directly interacting with GUI elements
Painter Conflicts:
Multiple threads trying to paint to the same canvas simultaneously
Recursive repaint calls
Segmentation Fault:
Likely caused by improper thread cleanup or accessing deleted objects
991 lines
39 KiB
Python
991 lines
39 KiB
Python
# -*- coding: utf-8 -*-
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import os
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import time
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import csv
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import threading
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from datetime import datetime
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import numpy as np
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import matplotlib
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matplotlib.use('Qt5Agg')
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from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
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from matplotlib.figure import Figure
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from collections import deque
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from PyQt5.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout, QGridLayout, QLabel,
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QPushButton, QLineEdit, QCheckBox, QFrame, QMessageBox, QFileDialog)
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from PyQt5.QtCore import Qt, QTimer, pyqtSignal, pyqtSlot, QObject, QThread
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import pysmu
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class DeviceDisconnectedError(Exception):
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pass
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class MeasurementThread(QThread):
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update_signal = pyqtSignal(float, float, float)
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error_signal = pyqtSignal(str)
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def __init__(self, device, interval=0.1):
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super().__init__()
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self.device = device
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self.interval = interval
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self.running = False
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self.filter_window_size = 10
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self.voltage_window = []
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self.current_window = []
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self.start_time = time.time()
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def run(self):
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self.running = True
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while self.running:
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try:
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samples = self.device.read(self.filter_window_size, 500, True)
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if not samples:
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raise DeviceDisconnectedError("No samples received")
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raw_voltage = np.mean([s[1][0] for s in samples])
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raw_current = np.mean([s[0][1] for s in samples])
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current_time = time.time() - self.start_time
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self.voltage_window.append(raw_voltage)
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self.current_window.append(raw_current)
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if len(self.voltage_window) > self.filter_window_size:
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self.voltage_window.pop(0)
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self.current_window.pop(0)
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voltage = np.mean(self.voltage_window)
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current = np.mean(self.current_window)
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self.update_signal.emit(voltage, current, current_time)
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time.sleep(max(0.05, self.interval))
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except Exception as e:
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self.error_signal.emit(str(e))
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break
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def stop(self):
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self.running = False
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class BatteryTester(QMainWindow):
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def __init__(self):
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self.plot_mutex = threading.Lock()
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super().__init__()
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# Color scheme
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self.bg_color = "#2E3440"
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self.fg_color = "#D8DEE9"
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self.accent_color = "#5E81AC"
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self.warning_color = "#BF616A"
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self.success_color = "#A3BE8C"
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# Device and measurement state
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self.session_active = False
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self.measuring = False
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self.test_running = False
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self.continuous_mode = False
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self.request_stop = False
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self.interval = 0.1
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self.log_dir = os.path.expanduser("~/adalm1000/logs")
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os.makedirs(self.log_dir, exist_ok=True)
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# Data buffers
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self.time_data = deque()
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self.voltage_data = deque()
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self.current_data = deque()
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self.phase_data = deque()
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# Initialize UI and device
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self.setup_ui()
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self.init_device()
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# Set window properties
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self.setWindowTitle("ADALM1000 - Battery Capacity Tester (CC Test)")
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self.resize(1000, 800)
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self.setMinimumSize(800, 700)
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# Status update timer
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self.status_timer = QTimer()
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self.status_timer.timeout.connect(self.update_status)
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self.status_timer.start(1000) # Update every second
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def setup_ui(self):
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"""Configure the user interface"""
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# Main widget and layout
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self.central_widget = QWidget()
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self.setCentralWidget(self.central_widget)
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self.main_layout = QVBoxLayout(self.central_widget)
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self.main_layout.setContentsMargins(10, 10, 10, 10)
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# Header area
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header_frame = QFrame()
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header_frame.setFrameShape(QFrame.NoFrame)
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header_layout = QHBoxLayout(header_frame)
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header_layout.setContentsMargins(0, 0, 0, 0)
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self.title_label = QLabel("ADALM1000 Battery Capacity Tester (CC Test)")
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self.title_label.setStyleSheet(f"font-size: 14pt; font-weight: bold; color: {self.accent_color};")
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header_layout.addWidget(self.title_label, 1)
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# Status indicator
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self.status_light = QLabel()
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self.status_light.setFixedSize(20, 20)
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self.status_light.setStyleSheet("background-color: red; border-radius: 10px;")
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header_layout.addWidget(self.status_light)
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self.connection_label = QLabel("Disconnected")
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header_layout.addWidget(self.connection_label)
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# Reconnect button
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self.reconnect_btn = QPushButton("Reconnect")
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self.reconnect_btn.clicked.connect(self.reconnect_device)
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header_layout.addWidget(self.reconnect_btn)
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self.main_layout.addWidget(header_frame)
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# Measurement display
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display_frame = QFrame()
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display_frame.setFrameShape(QFrame.StyledPanel)
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display_frame.setStyleSheet(f"QFrame {{ border: 1px solid {self.accent_color}; border-radius: 5px; }}")
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display_layout = QGridLayout(display_frame)
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# Measurement values
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measurement_labels = [
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("Voltage (V)", "V"),
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("Current (A)", "A"),
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("Test Phase", ""),
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("Elapsed Time", "s"),
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("Discharge Capacity", "Ah"),
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("Charge Capacity", "Ah"),
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("Coulomb Eff.", "%"),
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("Cycle Count", ""),
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]
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self.value_labels = {}
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for i, (label, unit) in enumerate(measurement_labels):
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row = i // 2
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col = (i % 2) * 2
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lbl = QLabel(f"{label}:")
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lbl.setStyleSheet(f"color: {self.fg_color};")
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display_layout.addWidget(lbl, row, col)
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value_lbl = QLabel("0.000")
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value_lbl.setStyleSheet(f"color: {self.fg_color}; font-weight: bold;")
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display_layout.addWidget(value_lbl, row, col + 1)
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if unit:
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unit_lbl = QLabel(unit)
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unit_lbl.setStyleSheet(f"color: {self.fg_color};")
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display_layout.addWidget(unit_lbl, row, col + 2)
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# Store references to important labels
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if i == 0:
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self.voltage_label = value_lbl
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elif i == 1:
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self.current_label = value_lbl
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elif i == 2:
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self.phase_label = value_lbl
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elif i == 3:
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self.time_label = value_lbl
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elif i == 4:
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self.capacity_label = value_lbl
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elif i == 5:
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self.charge_capacity_label = value_lbl
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elif i == 6:
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self.efficiency_label = value_lbl
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elif i == 7:
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self.cycle_label = value_lbl
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self.main_layout.addWidget(display_frame)
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# Control area
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controls_frame = QFrame()
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controls_frame.setFrameShape(QFrame.NoFrame)
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controls_layout = QHBoxLayout(controls_frame)
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controls_layout.setContentsMargins(0, 0, 0, 0)
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# Parameters frame
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params_frame = QFrame()
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params_frame.setFrameShape(QFrame.StyledPanel)
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params_frame.setStyleSheet(f"QFrame {{ border: 1px solid {self.accent_color}; border-radius: 5px; }}")
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params_layout = QGridLayout(params_frame)
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# Battery capacity
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self.capacity = 0.2
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self.capacity_label_input = QLabel("Battery Capacity (Ah):")
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self.capacity_label_input.setStyleSheet(f"color: {self.fg_color};")
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params_layout.addWidget(self.capacity_label_input, 0, 0)
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self.capacity_input = QLineEdit("0.2")
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self.capacity_input.setStyleSheet(f"background-color: #3B4252; color: {self.fg_color};")
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self.capacity_input.setFixedWidth(60)
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params_layout.addWidget(self.capacity_input, 0, 1)
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# Charge cutoff
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self.charge_cutoff = 1.43
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self.charge_cutoff_label = QLabel("Charge Cutoff (V):")
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self.charge_cutoff_label.setStyleSheet(f"color: {self.fg_color};")
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params_layout.addWidget(self.charge_cutoff_label, 1, 0)
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self.charge_cutoff_input = QLineEdit("1.43")
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self.charge_cutoff_input.setStyleSheet(f"background-color: #3B4252; color: {self.fg_color};")
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self.charge_cutoff_input.setFixedWidth(60)
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params_layout.addWidget(self.charge_cutoff_input, 1, 1)
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# Discharge cutoff
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self.discharge_cutoff = 0.9
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self.discharge_cutoff_label = QLabel("Discharge Cutoff (V):")
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self.discharge_cutoff_label.setStyleSheet(f"color: {self.fg_color};")
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params_layout.addWidget(self.discharge_cutoff_label, 2, 0)
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self.discharge_cutoff_input = QLineEdit("0.9")
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self.discharge_cutoff_input.setStyleSheet(f"background-color: #3B4252; color: {self.fg_color};")
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self.discharge_cutoff_input.setFixedWidth(60)
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params_layout.addWidget(self.discharge_cutoff_input, 2, 1)
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# Rest time
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self.rest_time = 0.25
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self.rest_time_label = QLabel("Rest Time (hours):")
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self.rest_time_label.setStyleSheet(f"color: {self.fg_color};")
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params_layout.addWidget(self.rest_time_label, 3, 0)
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self.rest_time_input = QLineEdit("0.25")
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self.rest_time_input.setStyleSheet(f"background-color: #3B4252; color: {self.fg_color};")
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self.rest_time_input.setFixedWidth(60)
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params_layout.addWidget(self.rest_time_input, 3, 1)
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# C-rate for test
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self.c_rate = 0.1
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self.c_rate_label = QLabel("Test C-rate:")
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self.c_rate_label.setStyleSheet(f"color: {self.fg_color};")
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params_layout.addWidget(self.c_rate_label, 0, 2)
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self.c_rate_input = QLineEdit("0.1")
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self.c_rate_input.setStyleSheet(f"background-color: #3B4252; color: {self.fg_color};")
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self.c_rate_input.setFixedWidth(40)
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params_layout.addWidget(self.c_rate_input, 0, 3)
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c_rate_note = QLabel("(e.g., 0.2 for C/5)")
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c_rate_note.setStyleSheet(f"color: {self.fg_color};")
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params_layout.addWidget(c_rate_note, 0, 4)
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controls_layout.addWidget(params_frame, 1)
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# Button frame
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button_frame = QFrame()
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button_frame.setFrameShape(QFrame.NoFrame)
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button_layout = QVBoxLayout(button_frame)
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button_layout.setContentsMargins(0, 0, 0, 0)
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self.start_button = QPushButton("START TEST")
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self.start_button.setStyleSheet(f"""
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QPushButton {{
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background-color: {self.accent_color};
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color: {self.fg_color};
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font-weight: bold;
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padding: 6px;
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border-radius: 4px;
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}}
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QPushButton:disabled {{
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background-color: #4C566A;
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color: #D8DEE9;
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}}
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""")
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self.start_button.clicked.connect(self.start_test)
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button_layout.addWidget(self.start_button)
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self.stop_button = QPushButton("STOP TEST")
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self.stop_button.setStyleSheet(f"""
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QPushButton {{
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background-color: {self.warning_color};
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color: {self.fg_color};
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font-weight: bold;
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padding: 6px;
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border-radius: 4px;
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}}
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QPushButton:disabled {{
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background-color: #4C566A;
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color: #D8DEE9;
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}}
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""")
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self.stop_button.clicked.connect(self.stop_test)
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self.stop_button.setEnabled(False)
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button_layout.addWidget(self.stop_button)
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# Continuous mode checkbox
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self.continuous_mode_check = QCheckBox("Continuous Mode")
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self.continuous_mode_check.setChecked(True)
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self.continuous_mode_check.setStyleSheet(f"color: {self.fg_color};")
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button_layout.addWidget(self.continuous_mode_check)
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controls_layout.addWidget(button_frame)
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self.main_layout.addWidget(controls_frame)
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# Plot area
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self.setup_plot()
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# Status bar
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self.status_bar = self.statusBar()
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self.status_bar.setStyleSheet(f"color: {self.fg_color};")
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self.status_bar.showMessage("Ready")
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# Apply dark theme
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self.setStyleSheet(f"""
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QMainWindow {{
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background-color: {self.bg_color};
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}}
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QLabel {{
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color: {self.fg_color};
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}}
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QLineEdit {{
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background-color: #3B4252;
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color: {self.fg_color};
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border: 1px solid #4C566A;
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border-radius: 3px;
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padding: 2px;
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}}
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""")
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def setup_plot(self):
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"""Configure the matplotlib plot"""
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self.fig = Figure(figsize=(8, 5), dpi=100, facecolor=self.bg_color)
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self.fig.subplots_adjust(left=0.1, right=0.88, top=0.9, bottom=0.15)
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self.ax = self.fig.add_subplot(111)
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self.ax.set_facecolor('#3B4252')
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# Set initial voltage range
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voltage_padding = 0.2
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min_voltage = max(0, 0.9 - voltage_padding)
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max_voltage = 1.43 + voltage_padding
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self.ax.set_ylim(min_voltage, max_voltage)
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# Voltage plot
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self.line_voltage, = self.ax.plot([], [], color='#00BFFF', label='Voltage (V)', linewidth=2)
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self.ax.set_ylabel("Voltage (V)", color='#00BFFF')
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self.ax.tick_params(axis='y', labelcolor='#00BFFF')
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# Current plot (right axis)
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self.ax2 = self.ax.twinx()
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current_padding = 0.05
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test_current = 0.1 * 0.2 # Default values
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max_current = test_current * 1.5
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self.ax2.set_ylim(-max_current - current_padding, max_current + current_padding)
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self.line_current, = self.ax2.plot([], [], 'r-', label='Current (A)', linewidth=2)
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self.ax2.set_ylabel("Current (A)", color='r')
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self.ax2.tick_params(axis='y', labelcolor='r')
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self.ax.set_xlabel('Time (s)', color=self.fg_color)
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self.ax.set_title('Battery Test (CC)', color=self.fg_color)
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self.ax.tick_params(axis='x', colors=self.fg_color)
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self.ax.grid(True, color='#4C566A')
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# Position legends
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self.ax.legend(loc='upper left', bbox_to_anchor=(0.01, 0.99))
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self.ax2.legend(loc='upper right', bbox_to_anchor=(0.99, 0.99))
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# Embed plot
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self.canvas = FigureCanvas(self.fig)
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self.canvas.setStyleSheet(f"background-color: {self.bg_color};")
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self.main_layout.addWidget(self.canvas, 1)
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def init_device(self):
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"""Initialize the ADALM1000 device with continuous measurement"""
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try:
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# Clean up any existing session
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if hasattr(self, 'session'):
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try:
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self.session.end()
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del self.session
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except:
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pass
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time.sleep(1)
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self.session = pysmu.Session(ignore_dataflow=True, queue_size=10000)
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if not self.session.devices:
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raise Exception("No ADALM1000 detected - check connections")
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self.dev = self.session.devices[0]
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self.dev.channels['A'].mode = pysmu.Mode.HI_Z
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self.dev.channels['B'].mode = pysmu.Mode.HI_Z
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self.dev.channels['A'].constant(0)
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self.dev.channels['B'].constant(0)
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self.session.start(0)
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self.status_light.setStyleSheet(f"background-color: green; border-radius: 10px;")
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self.connection_label.setText("Connected")
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self.status_bar.showMessage("Device connected | Ready to measure")
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self.session_active = True
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self.start_button.setEnabled(True)
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# Start measurement thread
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self.measurement_thread = MeasurementThread(self.dev, self.interval)
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self.measurement_thread.update_signal.connect(self.update_measurements)
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self.measurement_thread.error_signal.connect(self.handle_device_error)
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# Start the QThread directly (no need for threading.Thread)
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self.measurement_thread.start()
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except Exception as e:
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self.handle_device_error(str(e))
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@pyqtSlot(float, float, float)
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def update_measurements(self, voltage, current, current_time):
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"""Update measurements from the measurement thread"""
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self.time_data.append(current_time)
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self.voltage_data.append(voltage)
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self.current_data.append(current)
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# Update display
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self.voltage_label.setText(f"{voltage:.4f}")
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self.current_label.setText(f"{current:.4f}")
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self.time_label.setText(self.format_time(current_time))
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# Update plot periodically
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if len(self.time_data) % 10 == 0: # Update plot every 10 samples
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self.update_plot()
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def update_status(self):
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"""Update status information periodically"""
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if self.test_running:
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# Update capacity calculations if in test mode
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if self.measuring and self.time_data:
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current_time = time.time() - self.start_time
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delta_t = current_time - self.last_update_time
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self.last_update_time = current_time
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if self.test_phase == "Discharge":
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current_current = abs(self.current_data[-1])
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self.capacity_ah += current_current * delta_t / 3600
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self.capacity_label.setText(f"{self.capacity_ah:.4f}")
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elif self.test_phase == "Charge":
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current_current = abs(self.current_data[-1])
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self.charge_capacity += current_current * delta_t / 3600
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self.charge_capacity_label.setText(f"{self.charge_capacity:.4f}")
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|
|
def start_test(self):
|
|
"""Start the full battery test cycle"""
|
|
if not self.test_running:
|
|
try:
|
|
# Get parameters from UI
|
|
self.capacity = float(self.capacity_input.text())
|
|
self.charge_cutoff = float(self.charge_cutoff_input.text())
|
|
self.discharge_cutoff = float(self.discharge_cutoff_input.text())
|
|
self.rest_time = float(self.rest_time_input.text())
|
|
self.c_rate = float(self.c_rate_input.text())
|
|
|
|
# Validate inputs
|
|
if self.capacity <= 0:
|
|
raise ValueError("Battery capacity must be positive")
|
|
if self.charge_cutoff <= self.discharge_cutoff:
|
|
raise ValueError("Charge cutoff must be higher than discharge cutoff")
|
|
if self.c_rate <= 0:
|
|
raise ValueError("C-rate must be positive")
|
|
|
|
self.continuous_mode = self.continuous_mode_check.isChecked()
|
|
self.measurement_start_time = time.time()
|
|
self.test_start_time = time.time()
|
|
test_current = self.c_rate * self.capacity
|
|
|
|
if test_current > 0.2:
|
|
raise ValueError("Current must be ≤200mA (0.2A) for ADALM1000")
|
|
|
|
# Clear previous data
|
|
self.time_data.clear()
|
|
self.voltage_data.clear()
|
|
self.current_data.clear()
|
|
self.phase_data.clear()
|
|
self.capacity_ah = 0.0
|
|
self.charge_capacity = 0.0
|
|
self.coulomb_efficiency = 0.0
|
|
self.cycle_count = 0
|
|
|
|
# Reset plot
|
|
self.reset_plot()
|
|
|
|
# Generate filename
|
|
timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
|
|
self.base_filename = os.path.join(self.log_dir, f"battery_test_{timestamp}")
|
|
self.current_cycle_file = None
|
|
|
|
# Start test
|
|
self.test_running = True
|
|
self.start_time = time.time()
|
|
self.last_update_time = time.time()
|
|
self.test_phase = "Initial Discharge"
|
|
self.phase_label.setText(self.test_phase)
|
|
|
|
self.start_button.setEnabled(False)
|
|
self.stop_button.setEnabled(True)
|
|
self.status_bar.showMessage(f"Test started | Discharging to {self.discharge_cutoff}V @ {test_current:.3f}A")
|
|
|
|
# Start test sequence in a new thread
|
|
self.test_sequence_thread = threading.Thread(target=self.run_test_sequence, daemon=True)
|
|
self.test_sequence_thread.start()
|
|
|
|
except Exception as e:
|
|
QMessageBox.critical(self, "Error", str(e))
|
|
|
|
def create_cycle_log_file(self):
|
|
"""Create a new log file for the current cycle"""
|
|
if hasattr(self, 'current_cycle_file') and self.current_cycle_file:
|
|
try:
|
|
self.current_cycle_file.close()
|
|
except Exception as e:
|
|
print(f"Error closing previous log file: {e}")
|
|
|
|
if not os.access(self.log_dir, os.W_OK):
|
|
QMessageBox.critical(self, "Error", f"No write permissions in {self.log_dir}")
|
|
return False
|
|
|
|
suffix = 1
|
|
while True:
|
|
self.filename = f"{self.base_filename}_{suffix}.csv"
|
|
if not os.path.exists(self.filename):
|
|
break
|
|
suffix += 1
|
|
|
|
try:
|
|
self.current_cycle_file = open(self.filename, 'w', newline='')
|
|
self.log_writer = csv.writer(self.current_cycle_file)
|
|
self.log_writer.writerow(["Time(s)", "Voltage(V)", "Current(A)", "Phase",
|
|
"Discharge_Capacity(Ah)", "Charge_Capacity(Ah)",
|
|
"Coulomb_Eff(%)", "Cycle"])
|
|
self.log_buffer = []
|
|
return True
|
|
except Exception as e:
|
|
QMessageBox.critical(self, "Error", f"Failed to create log file: {e}")
|
|
return False
|
|
|
|
def format_time(self, seconds):
|
|
"""Convert seconds to hh:mm:ss format"""
|
|
hours = int(seconds // 3600)
|
|
minutes = int((seconds % 3600) // 60)
|
|
seconds = int(seconds % 60)
|
|
return f"{hours:02d}:{minutes:02d}:{seconds:02d}"
|
|
|
|
def stop_test(self):
|
|
"""Request immediate stop of the test"""
|
|
if not self.test_running:
|
|
return
|
|
|
|
self.request_stop = True
|
|
self.test_running = False
|
|
self.measuring = False
|
|
self.test_phase = "Idle"
|
|
self.phase_label.setText(self.test_phase)
|
|
|
|
if hasattr(self, 'dev'):
|
|
try:
|
|
self.dev.channels['A'].mode = pysmu.Mode.HI_Z
|
|
self.dev.channels['A'].constant(0)
|
|
except Exception as e:
|
|
print(f"Error resetting device: {e}")
|
|
|
|
self.time_data.clear()
|
|
self.voltage_data.clear()
|
|
self.current_data.clear()
|
|
self.phase_data.clear()
|
|
|
|
self.capacity_ah = 0.0
|
|
self.charge_capacity = 0.0
|
|
self.coulomb_efficiency = 0.0
|
|
|
|
self.reset_plot()
|
|
|
|
self.status_bar.showMessage("Test stopped - Ready for new test")
|
|
self.stop_button.setEnabled(False)
|
|
self.start_button.setEnabled(True)
|
|
|
|
self.finalize_test()
|
|
|
|
def run_test_sequence(self):
|
|
try:
|
|
test_current = self.c_rate * self.capacity
|
|
|
|
while self.test_running and (self.continuous_mode or self.cycle_count == 0):
|
|
self.request_stop = False
|
|
self.cycle_count += 1
|
|
self.cycle_label.setText(str(self.cycle_count))
|
|
|
|
self.create_cycle_log_file()
|
|
|
|
# 1. Charge phase
|
|
self.test_phase = "Charge"
|
|
self.phase_label.setText(self.test_phase)
|
|
self.status_bar.showMessage(f"Charging to {self.charge_cutoff}V @ {test_current:.3f}A")
|
|
|
|
self.measuring = True
|
|
self.dev.channels['B'].mode = pysmu.Mode.HI_Z
|
|
self.dev.channels['A'].mode = pysmu.Mode.SIMV
|
|
self.dev.channels['A'].constant(test_current)
|
|
self.charge_capacity = 0.0
|
|
self.charge_capacity_label.setText(f"{self.charge_capacity:.4f}")
|
|
target_voltage = self.charge_cutoff
|
|
self.last_update_time = time.time()
|
|
|
|
while self.test_running and not self.request_stop:
|
|
if not self.voltage_data:
|
|
time.sleep(0.1)
|
|
continue
|
|
|
|
current_voltage = self.voltage_data[-1]
|
|
measured_current = abs(self.current_data[-1])
|
|
|
|
# Log data
|
|
if hasattr(self, 'current_cycle_file'):
|
|
self.log_buffer.append([
|
|
f"{time.time() - self.start_time:.3f}",
|
|
f"{current_voltage:.6f}",
|
|
f"{measured_current:.6f}",
|
|
self.test_phase,
|
|
f"{self.capacity_ah:.4f}",
|
|
f"{self.charge_capacity:.4f}",
|
|
f"{self.coulomb_efficiency:.1f}",
|
|
f"{self.cycle_count}"
|
|
])
|
|
|
|
if len(self.log_buffer) >= 10:
|
|
self.log_writer.writerows(self.log_buffer)
|
|
self.log_buffer.clear()
|
|
|
|
if current_voltage >= target_voltage or self.request_stop:
|
|
break
|
|
|
|
time.sleep(0.1)
|
|
|
|
if self.request_stop or not self.test_running:
|
|
break
|
|
|
|
# 2. Rest period after charge
|
|
self.test_phase = "Resting (Post-Charge)"
|
|
self.phase_label.setText(self.test_phase)
|
|
self.measuring = False
|
|
self.dev.channels['A'].mode = pysmu.Mode.HI_Z
|
|
self.dev.channels['A'].constant(0)
|
|
|
|
rest_end_time = time.time() + (self.rest_time * 3600)
|
|
while time.time() < rest_end_time and self.test_running and not self.request_stop:
|
|
time_left = max(0, rest_end_time - time.time())
|
|
self.status_bar.showMessage(f"Resting after charge | Time left: {time_left/60:.1f} min")
|
|
time.sleep(1)
|
|
|
|
if self.request_stop or not self.test_running:
|
|
break
|
|
|
|
# 3. Discharge phase
|
|
self.test_phase = "Discharge"
|
|
self.phase_label.setText(self.test_phase)
|
|
self.status_bar.showMessage(f"Discharging to {self.discharge_cutoff}V @ {test_current:.3f}A")
|
|
|
|
self.measuring = True
|
|
self.dev.channels['A'].mode = pysmu.Mode.SIMV
|
|
self.dev.channels['A'].constant(-test_current)
|
|
self.capacity_ah = 0.0
|
|
self.capacity_label.setText(f"{self.capacity_ah:.4f}")
|
|
self.last_update_time = time.time()
|
|
|
|
while self.test_running and not self.request_stop:
|
|
if not self.current_data:
|
|
time.sleep(0.1)
|
|
continue
|
|
|
|
current_voltage = self.voltage_data[-1]
|
|
current_current = abs(self.current_data[-1])
|
|
|
|
# Log data
|
|
if hasattr(self, 'current_cycle_file'):
|
|
self.log_buffer.append([
|
|
f"{time.time() - self.start_time:.3f}",
|
|
f"{current_voltage:.6f}",
|
|
f"{current_current:.6f}",
|
|
self.test_phase,
|
|
f"{self.capacity_ah:.4f}",
|
|
f"{self.charge_capacity:.4f}",
|
|
f"{self.coulomb_efficiency:.1f}",
|
|
f"{self.cycle_count}"
|
|
])
|
|
|
|
if len(self.log_buffer) >= 10:
|
|
self.log_writer.writerows(self.log_buffer)
|
|
self.log_buffer.clear()
|
|
|
|
if current_voltage <= self.discharge_cutoff or self.request_stop:
|
|
break
|
|
|
|
if not self.continuous_mode_check.isChecked():
|
|
self.test_running = False
|
|
self.test_phase = "Idle"
|
|
self.phase_label.setText(self.test_phase)
|
|
break
|
|
|
|
# 4. Rest period after discharge
|
|
if self.test_running and not self.request_stop:
|
|
self.test_phase = "Resting (Post-Discharge)"
|
|
self.phase_label.setText(self.test_phase)
|
|
self.measuring = False
|
|
self.dev.channels['A'].mode = pysmu.Mode.HI_Z
|
|
self.dev.channels['A'].constant(0)
|
|
|
|
rest_end_time = time.time() + (self.rest_time * 3600)
|
|
while time.time() < rest_end_time and self.test_running and not self.request_stop:
|
|
time_left = max(0, rest_end_time - time.time())
|
|
self.status_bar.showMessage(f"Resting after discharge | Time left: {time_left/60:.1f} min")
|
|
time.sleep(1)
|
|
|
|
# Calculate Coulomb efficiency
|
|
if not self.request_stop and self.charge_capacity > 0:
|
|
efficiency = (self.capacity_ah / self.charge_capacity) * 100
|
|
self.coulomb_efficiency = efficiency
|
|
self.efficiency_label.setText(f"{efficiency:.1f}")
|
|
|
|
self.status_bar.showMessage(
|
|
f"Cycle {self.cycle_count} complete | "
|
|
f"Discharge: {self.capacity_ah:.3f}Ah | "
|
|
f"Charge: {self.charge_capacity:.3f}Ah | "
|
|
f"Efficiency: {efficiency:.1f}%"
|
|
)
|
|
|
|
self.write_cycle_summary()
|
|
|
|
if self.log_buffer:
|
|
self.log_writer.writerows(self.log_buffer)
|
|
self.log_buffer.clear()
|
|
|
|
self.finalize_test()
|
|
|
|
except Exception as e:
|
|
self.status_bar.showMessage(f"Test error: {str(e)}")
|
|
self.finalize_test()
|
|
|
|
def finalize_test(self):
|
|
"""Final cleanup after test completes or is stopped"""
|
|
self.measuring = False
|
|
if hasattr(self, 'dev'):
|
|
try:
|
|
self.dev.channels['A'].constant(0)
|
|
except Exception as e:
|
|
print(f"Error resetting device: {e}")
|
|
|
|
if hasattr(self, 'log_buffer') and self.log_buffer and hasattr(self, 'log_writer'):
|
|
try:
|
|
self.log_writer.writerows(self.log_buffer)
|
|
self.log_buffer.clear()
|
|
except Exception as e:
|
|
print(f"Error flushing log buffer: {e}")
|
|
|
|
if hasattr(self, 'current_cycle_file'):
|
|
try:
|
|
self.current_cycle_file.close()
|
|
except Exception as e:
|
|
print(f"Error closing log file: {e}")
|
|
|
|
self.start_button.setEnabled(True)
|
|
self.stop_button.setEnabled(False)
|
|
self.request_stop = False
|
|
|
|
message = (
|
|
f"Test safely stopped after discharge phase | "
|
|
f"Cycle {self.cycle_count} completed | "
|
|
f"Final capacity: {self.capacity_ah:.3f}Ah"
|
|
)
|
|
self.status_bar.showMessage(message)
|
|
|
|
QMessageBox.information(
|
|
self,
|
|
"Test Completed",
|
|
f"Test was safely stopped after discharge phase.\n\n"
|
|
f"Final discharge capacity: {self.capacity_ah:.3f}Ah\n"
|
|
f"Total cycles completed: {self.cycle_count}"
|
|
)
|
|
|
|
def reset_plot(self):
|
|
"""Reset the plot completely for a new test"""
|
|
self.line_voltage.set_data([], [])
|
|
self.line_current.set_data([], [])
|
|
|
|
self.time_data.clear()
|
|
self.voltage_data.clear()
|
|
self.current_data.clear()
|
|
|
|
voltage_padding = 0.2
|
|
min_voltage = max(0, self.discharge_cutoff - voltage_padding)
|
|
max_voltage = self.charge_cutoff + voltage_padding
|
|
self.ax.set_xlim(0, 10)
|
|
self.ax.set_ylim(min_voltage, max_voltage)
|
|
|
|
current_padding = 0.05
|
|
test_current = self.c_rate * self.capacity
|
|
max_current = test_current * 1.5
|
|
self.ax2.set_ylim(-max_current - current_padding, max_current + current_padding)
|
|
|
|
self.canvas.draw()
|
|
|
|
def write_cycle_summary(self):
|
|
"""Write cycle summary to the current cycle's log file"""
|
|
if not hasattr(self, 'current_cycle_file') or not self.current_cycle_file:
|
|
return
|
|
|
|
summary_line = (
|
|
f"Cycle {self.cycle_count} Summary - "
|
|
f"Discharge={self.capacity_ah:.4f}Ah, "
|
|
f"Charge={self.charge_capacity:.4f}Ah, "
|
|
f"Efficiency={self.coulomb_efficiency:.1f}%"
|
|
)
|
|
|
|
try:
|
|
if self.log_buffer:
|
|
self.log_writer.writerows(self.log_buffer)
|
|
self.log_buffer.clear()
|
|
self.current_cycle_file.write(summary_line + "\n")
|
|
self.current_cycle_file.flush()
|
|
except Exception as e:
|
|
print(f"Error writing cycle summary: {e}")
|
|
|
|
def update_plot(self):
|
|
"""Optimized plot update with change detection"""
|
|
if not self.time_data:
|
|
return
|
|
|
|
with self.plot_mutex:
|
|
self.line_voltage.set_data(self.time_data, self.voltage_data)
|
|
self.line_current.set_data(self.time_data, self.current_data)
|
|
self.auto_scale_axes()
|
|
self.canvas.draw_idle()
|
|
|
|
def auto_scale_axes(self):
|
|
"""Auto-scale plot axes with appropriate padding and strict boundaries"""
|
|
if not self.time_data:
|
|
return
|
|
|
|
min_time = 0
|
|
max_time = self.time_data[-1]
|
|
current_xlim = self.ax.get_xlim()
|
|
|
|
if max_time > current_xlim[1] * 0.95:
|
|
new_max = max_time * 1.05
|
|
self.ax.set_xlim(min_time, new_max)
|
|
self.ax2.set_xlim(min_time, new_max)
|
|
|
|
voltage_padding = 0.2
|
|
if self.voltage_data:
|
|
min_voltage = max(0, min(self.voltage_data) - voltage_padding)
|
|
max_voltage = min(5.0, max(self.voltage_data) + voltage_padding)
|
|
current_ylim = self.ax.get_ylim()
|
|
if (abs(current_ylim[0] - min_voltage) > 0.1 or abs(current_ylim[1] - max_voltage) > 0.1):
|
|
self.ax.set_ylim(min_voltage, max_voltage)
|
|
|
|
current_padding = 0.05
|
|
if self.current_data:
|
|
min_current = max(-0.25, min(self.current_data) - current_padding)
|
|
max_current = min(0.25, max(self.current_data) + current_padding)
|
|
current_ylim2 = self.ax2.get_ylim()
|
|
if (abs(current_ylim2[0] - min_current) > 0.02 or abs(current_ylim2[1] - max_current) > 0.02):
|
|
self.ax2.set_ylim(min_current, max_current)
|
|
|
|
@pyqtSlot(str)
|
|
def handle_device_error(self, error):
|
|
"""Handle device connection errors"""
|
|
error_msg = str(error)
|
|
print(f"Device error: {error_msg}")
|
|
|
|
if hasattr(self, 'session'):
|
|
try:
|
|
if self.session_active:
|
|
self.session.end()
|
|
del self.session
|
|
except Exception as e:
|
|
print(f"Error cleaning up session: {e}")
|
|
|
|
self.status_light.setStyleSheet(f"background-color: red; border-radius: 10px;")
|
|
self.connection_label.setText("Disconnected")
|
|
self.status_bar.showMessage(f"Device error: {error_msg}")
|
|
|
|
self.session_active = False
|
|
self.test_running = False
|
|
self.continuous_mode = False
|
|
self.measuring = False
|
|
|
|
self.start_button.setEnabled(False)
|
|
self.stop_button.setEnabled(False)
|
|
|
|
self.time_data.clear()
|
|
self.voltage_data.clear()
|
|
self.current_data.clear()
|
|
|
|
if hasattr(self, 'line_voltage') and hasattr(self, 'line_current'):
|
|
self.line_voltage.set_data([], [])
|
|
self.line_current.set_data([], [])
|
|
self.ax.set_xlim(0, 1)
|
|
self.ax2.set_xlim(0, 1)
|
|
self.canvas.draw()
|
|
|
|
self.attempt_reconnect()
|
|
|
|
def attempt_reconnect(self):
|
|
"""Attempt to reconnect automatically"""
|
|
QMessageBox.critical(
|
|
self,
|
|
"Device Connection Error",
|
|
"Could not connect to ADALM1000\n\n"
|
|
"1. Check USB cable connection\n"
|
|
"2. The device will attempt to reconnect automatically"
|
|
)
|
|
|
|
QTimer.singleShot(1000, self.reconnect_device)
|
|
|
|
def reconnect_device(self):
|
|
"""Reconnect the device with proper cleanup"""
|
|
self.status_bar.showMessage("Attempting to reconnect...")
|
|
|
|
if hasattr(self, 'session'):
|
|
try:
|
|
if self.session_active:
|
|
self.session.end()
|
|
del self.session
|
|
except:
|
|
pass
|
|
|
|
self.test_running = False
|
|
self.continuous_mode = False
|
|
self.measuring = False
|
|
|
|
if hasattr(self, 'measurement_thread'):
|
|
self.measurement_thread.stop()
|
|
|
|
time.sleep(1.5)
|
|
|
|
try:
|
|
self.init_device()
|
|
if self.session_active:
|
|
self.status_bar.showMessage("Reconnected successfully")
|
|
return
|
|
except Exception as e:
|
|
print(f"Reconnect failed: {e}")
|
|
|
|
self.status_bar.showMessage("Reconnect failed - will retry...")
|
|
QTimer.singleShot(2000, self.reconnect_device)
|
|
|
|
def closeEvent(self, event):
|
|
"""Clean up on window close"""
|
|
self.test_running = False
|
|
self.measuring = False
|
|
self.session_active = False
|
|
|
|
if hasattr(self, 'measurement_thread'):
|
|
self.measurement_thread.stop()
|
|
self.measurement_thread.quit()
|
|
self.measurement_thread.wait(1000) # Wait up to 1 second
|
|
|
|
if hasattr(self, 'session') and self.session:
|
|
try:
|
|
self.session.end()
|
|
except Exception as e:
|
|
print(f"Error ending session: {e}")
|
|
|
|
event.accept()
|
|
|
|
if __name__ == "__main__":
|
|
app = QApplication([])
|
|
try:
|
|
window = BatteryTester()
|
|
window.show()
|
|
app.exec_()
|
|
except Exception as e:
|
|
QMessageBox.critical(None, "Fatal Error", f"Application failed: {str(e)}") |