怎么将这个串口接收的数据self.ser = serial.Serial("COM8", 115200) data = self.ser.readline().decode().strip() data_list = data.split()加入到ui更新曲线数据中new_data = np.random.rand() # 将数据添加到数据列表中 self.data.append(new_data) # 更新曲线数据 self.data_line.setData(np.arange(len(self.data)), self.data)

可以将串口接收到的数据 `data_list` 转换成浮点数列表，然后将其添加到数据列表 `self.data` 中，最后使用 `setData()` 方法更新曲线数据。

具体代码如下：

self.ser = serial.Serial("COM8", 115200)
data = self.ser.readline().decode().strip()
data_list = data.split()
float_list = [float(x) for x in data_list]  # 将字符串列表转换为浮点数列表
self.data.extend(float_list)  # 将数据添加到数据列表中
self.data_line.setData(np.arange(len(self.data)), self.data)  # 更新曲线数据

这样，每次从串口接收到数据后，就会将其转换为浮点数列表，并添加到数据列表中，然后更新曲线数据。

相关问题

class MainWindow(QMainWindow): def init(self, user_id): super().init() self.user_id = user_id self.initUI() # 打开串口 self.ser = serial.Serial('COM7', 9600, timeout=1) def initUI(self): # 创建用于显示员工信息的控件 self.info_label = QLabel("员工信息", self) self.info_label.move(100, 50) self.info_label.setStyleSheet("font-size: 24px; color: black; background-color: #eee; border-radius: 10px;") self.id_label = QLabel("员工ID：", self) self.id_label.move(70, 100) self.id_label.setStyleSheet("font-size: 18px; color: black;") self.name_label = QLabel("姓名：", self) self.name_label.move(70, 150) self.name_label.setStyleSheet("font-size: 18px; color: black;") self.six_label = QLabel("性别：", self) self.six_label.move(70, 200) self.six_label.setStyleSheet("font-size: 18px; color: black;") self.sfz_label = QLabel("身份证：", self) self.sfz_label.move(70, 250) self.sfz_label.setStyleSheet("font-size: 18px; color: black;") self.tel_label = QLabel("电话：", self) self.tel_label.move(70, 300) self.tel_label.setStyleSheet("font-size: 18px; color: black;") self.setFixedSize(800, 500) self.setWindowTitle('员工信息') # 查询员工信息 def query_employee(self, id): conn = pymysql.connect(host='39.99.214.172', user='root', password='Solotion.123', database='jj_tset') cursor = conn.cursor() cursor.execute("SELECT * FROM employee_table WHERE user_id='%s'" % id) result = cursor.fetchone() conn.close() return result # 读取数据 def read_data(self): data = self.ser.readline() if data: # 解析数据 id = data.decode().strip() # 查询员工信息 result = self.query_employee(id) if result: # 更新UI界面 self.id_label.setText("员工ID：" + result[0]) self.name_label.setText("姓名：" + str(result[1])) self.six_label.setText("性别：" + result[2]) self.sfz_label.setText("身份证：" + str(result[3])) self.tel_label.setText("电话：" + result[4]) print(result[0],result[1],result[2],result[3],result[4]) else: # 显示空白信息 self.id_label.setText("员工ID：") self.name_label.setText("姓名：") self.six_label.setText("性别：") self.sfz_label.setText("身份证：") self.tel_label.setText("电话：") # 定时读取数据 QTimer.singleShot(100, self.read_data) def closeEvent(self, event): # 关闭串口 self.ser.close()把这个改为多线程

好的，您想要把这段代码改为多线程，可以考虑使用QThread来实现。具体实现步骤如下：

1. 定义新的类，继承自QThread。

2. 在新的类中添加一个信号，用于传递查询到的员工信息。

3. 在新的类中重写run()方法，在其中实现查询员工信息和更新UI界面的逻辑。

4. 在MainWindow类中创建一个新的线程对象，并连接其信号和槽函数。

5. 启动新的线程。

下面是修改后的代码，供您参考：

from PyQt5.QtCore import QThread, pyqtSignal

class QueryThread(QThread):
    query_result = pyqtSignal(tuple)
    
    def __init__(self, user_id):
        super().__init__()
        self.user_id = user_id
        self.ser = serial.Serial('COM7', 9600, timeout=1)
    
    def query_employee(self, id):
        conn = pymysql.connect(host='39.99.214.172', user='root', password='Solotion.123', database='jj_tset')
        cursor = conn.cursor()
        cursor.execute("SELECT * FROM employee_table WHERE user_id='%s'" % id)
        result = cursor.fetchone()
        conn.close()
        return result
    
    def run(self):
        while True:
            data = self.ser.readline()
            if data:
                id = data.decode().strip()
                result = self.query_employee(id)
                self.query_result.emit(result)
    
    def stop(self):
        self.ser.close()

class MainWindow(QMainWindow):
    def __init__(self, user_id):
        super().__init__()
        self.user_id = user_id
        self.initUI()
        self.query_thread = QueryThread(user_id)
        self.query_thread.query_result.connect(self.update_ui)
        self.query_thread.start()
    
    def initUI(self):
        self.info_label = QLabel("员工信息", self)
        self.info_label.move(100, 50)
        self.info_label.setStyleSheet("font-size: 24px; color: black; background-color: #eee; border-radius: 10px;")
        self.id_label = QLabel("员工ID：", self)
        self.id_label.move(70, 100)
        self.id_label.setStyleSheet("font-size: 18px; color: black;")
        self.name_label = QLabel("姓名：", self)
        self.name_label.move(70, 150)
        self.name_label.setStyleSheet("font-size: 18px; color: black;")
        self.six_label = QLabel("性别：", self)
        self.six_label.move(70, 200)
        self.six_label.setStyleSheet("font-size: 18px; color: black;")
        self.sfz_label = QLabel("身份证：", self)
        self.sfz_label.move(70, 250)
        self.sfz_label.setStyleSheet("font-size: 18px; color: black;")
        self.tel_label = QLabel("电话：", self)
        self.tel_label.move(70, 300)
        self.tel_label.setStyleSheet("font-size: 18px; color: black;")
        self.setFixedSize(800, 500)
        self.setWindowTitle('员工信息')
    
    def update_ui(self, result):
        if result:
            self.id_label.setText("员工ID：" + result[0])
            self.name_label.setText("姓名：" + str(result[1]))
            self.six_label.setText("性别：" + result[2])
            self.sfz_label.setText("身份证：" + str(result[3]))
            self.tel_label.setText("电话：" + result[4])
            print(result[0],result[1],result[2],result[3],result[4])
        else:
            self.id_label.setText("员工ID：")
            self.name_label.setText("姓名：")
            self.six_label.setText("性别：")
            self.sfz_label.setText("身份证：")
            self.tel_label.setText("电话：")
    
    def closeEvent(self, event):
        self.query_thread.stop()

需要注意的是，多线程编程需要遵循一定的规则，比如不能直接访问UI控件，需要使用信号和槽函数进行通信等。建议您在使用多线程时仔细阅读相关文档，以避免出现问题。

class MainWindow(QMainWindow): def init(self, user_id): super().init() self.user_id = user_id self.initUI() # 打开串口 self.ser = serial.Serial('COM7', 9600, timeout=1) def initUI(self): # 创建用于显示员工信息的控件 self.info_label = QLabel("员工信息", self) self.info_label.move(100, 50) self.info_label.setStyleSheet("font-size: 24px; color: black; background-color: #eee; border-radius: 10px;") self.id_label = QLabel("员工ID：", self) self.id_label.move(70, 100) self.id_label.setStyleSheet("font-size: 18px; color: black;") self.name_label = QLabel("姓名：", self) self.name_label.move(70, 150) self.name_label.setStyleSheet("font-size: 18px; color: black;") self.six_label = QLabel("性别：", self) self.six_label.move(70, 200) self.six_label.setStyleSheet("font-size: 18px; color: black;") self.sfz_label = QLabel("身份证：", self) self.sfz_label.move(70, 250) self.sfz_label.setStyleSheet("font-size: 18px; color: black;") self.tel_label = QLabel("电话：", self) self.tel_label.move(70, 300) self.tel_label.setStyleSheet("font-size: 18px; color: black;") self.setFixedSize(800, 500) self.setWindowTitle('员工信息') # 查询员工信息 def query_employee(self, id): conn = pymysql.connect(host='39.99.214.172', user='root', password='Solotion.123', database='jj_tset') cursor = conn.cursor() cursor.execute("SELECT * FROM employee_table WHERE user_id='%s'" % id) result = cursor.fetchone() conn.close() return result # 读取数据 def read_data(self): data = self.ser.readline() if data: # 解析数据 id = data.decode().strip() # 查询员工信息 result = self.query_employee(id) if result: # 更新UI界面 self.id_label.setText("员工ID：" + result[0]) self.name_label.setText("姓名：" + str(result[1])) self.six_label.setText("性别：" + result[2]) self.sfz_label.setText("身份证：" + str(result[3])) self.tel_label.setText("电话：" + result[4]) print(result[0],result[1],result[2],result[3],result[4]) else: # 显示空白信息 self.id_label.setText("员工ID：") self.name_label.setText("姓名：") self.six_label.setText("性别：") self.sfz_label.setText("身份证：") self.tel_label.setText("电话：") # 定时读取数据 QTimer.singleShot(100, self.read_data) def closeEvent(self, event): # 关闭串口 self.ser.close()用多线程改写代码，防止主线程阻塞

Here's an example of how you could use multithreading to prevent the main thread from blocking:

from PyQt5.QtCore import Qt, QThread, QTimer, pyqtSignal

class SerialThread(QThread):
    dataReceived = pyqtSignal(str)

    def __init__(self, parent=None):
        super().__init__(parent)
        self.ser = serial.Serial('COM7', 9600, timeout=1)
        self.running = False

    def run(self):
        self.running = True
        while self.running:
            data = self.ser.readline().decode().strip()
            if data:
                self.dataReceived.emit(data)

    def stop(self):
        self.running = False
        self.wait()
        self.ser.close()

class MainWindow(QMainWindow):
    def __init__(self, user_id):
        super().__init__()
        self.user_id = user_id
        self.initUI()

        self.serialThread = SerialThread(self)
        self.serialThread.dataReceived.connect(self.handle_data)
        self.serialThread.start()

    def initUI(self):
        # Create UI elements here

    def handle_data(self, data):
        # Handle incoming data here
        result = self.query_employee(data)
        if result:
            self.id_label.setText("员工ID：" + result[0])
            self.name_label.setText("姓名：" + str(result[1]))
            self.six_label.setText("性别：" + result[2])
            self.sfz_label.setText("身份证：" + str(result[3]))
            self.tel_label.setText("电话：" + result[4])
            print(result[0],result[1],result[2],result[3],result[4])
        else:
            self.id_label.setText("员工ID：")
            self.name_label.setText("姓名：")
            self.six_label.setText("性别：")
            self.sfz_label.setText("身份证：")
            self.tel_label.setText("电话：")

    def query_employee(self, id):
        # Query employee information from database
        pass

    def closeEvent(self, event):
        self.serialThread.stop()

In this example, a `SerialThread` is created to handle the serial communication. The `dataReceived` signal is emitted whenever new data is available. The `handle_data` method is called whenever the signal is emitted, and this method updates the UI with the relevant employee information. The `SerialThread` is started in the `MainWindow` constructor, and stopped in the `closeEvent` method.