Windows下Python获取AMD CPU温度失败的解决方案问询

环境与问题概述 #

• 系统：Windows 11 24H2
• Python版本：3.10.6
• 测试CPU：Ryzen 9 3950X、Ryzen 7 2700X
• 问题：尝试多种Python方法获取CPU温度均失效，包括WinTmp库、调用LibreHardwareMonitor/OpenHardwareMonitor DLL、WMI/MSAcpi方法，且Stack Overflow相关问题的代码也全部无效。

1. WinTmp库测试 #

使用以下代码调用：

import WinTmp
print(WinTmp.CPU_Temp())

返回结果：

>>> 0.0

结果明显不符合实际CPU温度。

2. LibreHardwareMonitor/OpenHardwareMonitor DLL + WMI/MSAcpi方法测试 #

完整测试代码：

import clr
from pathlib import Path
import os

try:
    import pynvml
except ImportError:
    pynvml = None
try:
    import win32com.client
except ImportError:
    win32com = None


def initialize_hardware_monitor():
    try:
        dll_path = str(Path(__file__).parent / "LibreHardwareMonitorLib.dll")
        if not os.path.exists(dll_path):
            dll_path = str(Path(__file__).parent / "OpenHardwareMonitorLib.dll")
            if not os.path.exists(dll_path):
                print("Error: LibreHardwareMonitorLib.dll or OpenHardwareMonitorLib.dll not found.")
                return None
        clr.AddReference(dll_path)
        from LibreHardwareMonitor import Hardware
        handle = Hardware.Computer()
        handle.IsCpuEnabled = True
        handle.IsGpuEnabled = True
        handle.Open()
        print("Hardware Monitor initialized successfully")
        return handle
    except Exception as e:
        print(f"Error initializing Hardware Monitor: {e}")
        return None


def get_wmi_msacpi_temperature(sensor_type="cpu"):
    if not win32com:
        print(f"pywin32 not installed for {sensor_type.upper()}")
        return None
    try:
        wmi_obj = win32com.client.GetObject("winmgmts:\\.\root\wmi")
        sensors = wmi_obj.ExecQuery("SELECT * FROM MSAcpi_ThermalZoneTemperature")
        for sensor in sensors:
            temp_kelvin = sensor.CurrentTemperature / 10.0
            temp_celsius = temp_kelvin - 273.15
            if sensor_type in sensor.InstanceName.lower() and 0 < temp_celsius < 100:
                return round(temp_celsius, 1)
        print(f"No {sensor_type.upper()} temperature sensor in MSAcpi_ThermalZoneTemperature")
        return None
    except Exception as e:
        print(f"Error getting {sensor_type.upper()} temperature via MSAcpi: {e}")
        return None


def get_cpu_temperature():
    try:
        handle = initialize_hardware_monitor()
        if handle:
            for hardware in handle.Hardware:
                hardware.Update()
                if hardware.HardwareType == 2:
                    for sensor in hardware.Sensors:
                        if sensor.SensorType == 2 and "cpu" in sensor.Name.lower():
                            temp = round(sensor.Value, 1)
                            if 0 < temp < 100:
                                return temp
            print("No CPU temperature sensor found in Hardware Monitor")
    except Exception as e:
        print(f"Error getting CPU temperature via Hardware Monitor: {e}")

    # WMI
    temp = get_wmi_msacpi_temperature("cpu")
    if temp:
        return temp
    print("All CPU temperature methods failed.")
    return None


print(get_cpu_temperature())

运行输出：

Hardware Monitor initialized successfully
No CPU temperature sensor found in Hardware Monitor
Error getting CPU temperature via MSAcpi: (-2147217405, 'OLE error 0x80041003', None, None)
All CPU temperature methods failed.
None

问题点：

• DLL初始化成功，但遍历后找不到CPU温度传感器
• WMI/MSAcpi调用直接报错，部分测试场景返回错误值（如0℃、29℃）

核心需求 #

• 无需运行OpenHardwareMonitor（OHM）主程序，仅通过其DLL实现CPU温度获取
• 希望详细了解Python调用C#/C++ DLL的完整流程
• 若上述需求无法实现，请明确告知以便转向其他技术方案

内容的提问来源于stack exchange，提问作者Tim Ryzikov