Initial commit

unilabos/devices/temperature/sensor.py

@@ -0,0 +1,90 @@
+import serial
+import time
+import struct
+import tkinter as tk
+from tkinter import ttk
+
+# 配置串口
+ser = serial.Serial(
+    port='COM13',
+    baudrate=9600,
+    bytesize=serial.EIGHTBITS,
+    parity=serial.PARITY_NONE,
+    stopbits=serial.STOPBITS_ONE,
+    timeout=1
+)
+
+def calculate_crc(data):
+    crc = 0xFFFF
+    for pos in data:
+        crc ^= pos
+        for i in range(8):
+            if (crc & 0x0001) != 0:
+                crc >>= 1
+                crc ^= 0xA001
+            else:
+                crc >>= 1
+    return crc
+
+def build_modbus_request(device_id, function_code, register_address, register_count):
+    request = struct.pack('>BBHH', device_id, function_code, register_address, register_count)
+    crc = calculate_crc(request)
+    request += struct.pack('<H', crc)
+    return request
+
+def read_modbus_response(response):
+    if len(response) < 5:
+        return None
+    data = response[:-2]
+    crc_received = struct.unpack('<H', response[-2:])[0]
+    crc_calculated = calculate_crc(data)
+    if crc_received == crc_calculated:
+        return data[3:]
+    return None
+
+def read_temperature():
+    device_id = 0xC0  # 设备地址
+    function_code = 0x04  # 读输入寄存器
+    register_address = 0x0003  # 温度高位寄存器地址
+    register_count = 0x0002  # 读取两个寄存器
+
+    request = build_modbus_request(device_id, function_code, register_address, register_count)
+    ser.write(request)
+    response = ser.read(9)  # 读取9字节的响应
+
+    data = read_modbus_response(response)
+    if data is None:
+        return None
+
+    high_value = struct.unpack('>H', data[:2])[0]
+    low_value = struct.unpack('>H', data[2:])[0]
+
+    # 组合高位和低位并计算实际温度
+    raw_temperature = (high_value << 16) | low_value
+    if raw_temperature & 0x8000:  # 如果低位寄存器最高位为1，表示负值
+        raw_temperature -= 0x10000  # 转换为正确的负数表示
+
+    actual_temperature = raw_temperature / 10.0
+    return actual_temperature
+
+def update_temperature_label():
+    temperature = read_temperature()
+    if temperature is not None:
+        temperature_label.config(text=f"反应温度: {temperature:.1f} °C")
+    else:
+        temperature_label.config(text="Error reading temperature")
+    root.after(1000, update_temperature_label)  # 每秒更新一次
+
+# 创建主窗口
+root = tk.Tk()
+root.title("反应温度监控")
+
+# 创建标签来显示温度
+temperature_label = ttk.Label(root, text="反应温度: -- °C", font=("Helvetica", 20))
+temperature_label.pack(padx=20, pady=20)
+
+# 开始更新温度
+update_temperature_label()
+
+# 运行主循环
+root.mainloop()