Python arduino和matplotlib pyqt上带有超声波传感器的实时图形显示图形

我坚持我的密码。我想在PyQt5上有GUI来显示我的图形。我在matplot中有工作代码，但无法将其转换为PyQT。我是这方面的初学者。我试图找到工作类似的代码，但我只是这样做。这在matplotlib上有效，但我想在GUI上使用它

import serial
import numpy
import matplotlib.pyplot as plt
from drawnow import *

distance =[]
arduinoData=serial.Serial('COM4',115200)
plt.ion()
cnt=0

def makeFig():
    plt.ylim(2,20)                         
    plt.title('Plot ')      
    plt.grid(True)                                 
    plt.ylabel('Distance cm')                            
    plt.plot(distance, 'ro-', label='Distance ')      
    plt.legend(loc='upper left')                   

while True: # While loop that loops forever
    while (arduinoData.inWaiting()==0): #Wait here until there is data
        pass #do nothing
    arduinoString = arduinoData.readline() #read the line of text from the serial port
    measurement = int(arduinoString)           #Convert first element to floating number and put in measurement           
    distance.append(measurement)                     #Build our distance array by appending temp readings                 
    drawnow(makeFig)                       #Call drawnow to update our live graph
    plt.pause(.000001)                     #Pause Briefly. Important to keep drawnow from crashing
    cnt=cnt+1
    if(cnt>50):                            #If you have 50 or more points, delete the first one from the array
        distance.pop(0)                       #This allows us to just see the last 50 data points
                         #This allows us to just see the last 50 data points

我的PyQt和Matplot。我想点击按钮并显示这个图表。 我在第51行的情节中发现了错误 测量=整数（arduinoString） ValueError:以10为基数的int（）的文本无效：b'\n''和 “后端TkAgg是交互式后端。正在打开交互式模式。” 我从我的传感器发送的数据是简单的距离，比如5，10等等

import sys
from PyQt5.QtWidgets import QDialog, QApplication, QPushButton, QVBoxLayout

from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
import matplotlib.pyplot as plt

import random
import serial
import numpy
from drawnow import *


arduinoData=serial.Serial('COM4',115200)

cnt=0
distance =[]
class Window(QDialog):
    def __init__(self, parent=None):
        super(Window, self).__init__(parent)

        # a figure instance to plot on
        self.figure = plt.figure()

        # this is the Canvas Widget that displays the `figure`
        # it takes the `figure` instance as a parameter to __init__
        self.canvas = FigureCanvas(self.figure)

        # this is the Navigation widget
        # it takes the Canvas widget and a parent
        self.toolbar = NavigationToolbar(self.canvas, self)

        # Just some button connected to `plot` method
        self.button = QPushButton('Plot')
        self.button.clicked.connect(self.plot)

        # set the layout
        layout = QVBoxLayout()
        layout.addWidget(self.toolbar)
        layout.addWidget(self.canvas)
        layout.addWidget(self.button)
        self.setLayout(layout)

    def plot(self):
        while True:
            while (arduinoData.inWaiting()==0): #wait for data 
                pass 

            arduinoString=arduinoData.readline() #read the line of text from the serial port

            measurement=int(arduinoString)
            distance.append(measurement)

            plt.pause(0.00001)
            global cnt
            cnt=cnt+1
            if (cnt>50):
                distance.pop(0)


        self.figure.clear()
        ax = self.figure.add_subplot(111)

        ax.plot(distance, '*-')

        self.canvas.draw()

if __name__ == '__main__':
    app = QApplication(sys.argv)

    main = Window()
    main.show()

    sys.exit(app.exec_())

这实际上并不是等待，它会执行低于它的任何内容，而不管您的条件检查如何。请按如下方式尝试：

while True:
    if (arduinoData.inWaiting()==0):
        continue
    #rest of your code

---

现在我没有那个错误，但我仍然没有得到任何数据来绘图。它打开了一个新的matplotlib图形，而不是我的。你们可以看到我在这张图中的意思。我在def plot中勾选了最后4行，但我仍然有2行相同的plot，我如何删除其中一行？新版本负责显示更改，旧版本只是复制它，所以当我关闭新版本时，旧版本不起作用。

while True:
    if (arduinoData.inWaiting()==0):
        continue
    #rest of your code