【摘要】 利用霍尔元件、HC-05蓝牙模块及STM32单片机，制作了一个能够测量弱磁场强度大小并实时在智能手机上显示测量数据的实验装置，详细介绍了其工作原理。通过设计多组不同位置、不同线圈匝数的磁场测量实验，从而得到多组实验数据，经过对实验数据进行分析处理，表明该磁场测量装置的测量范围为±40GS,分辨率为1GS;通过不确定度分析，验证了该装置的可行性、科学性。此外，相比于其他检测精度更高、检测范围更广的电磁场检测仪器，该磁场测量装置价格低廉、操作简单，更能够满足普通大众对磁场测量的需求。更多还原

【Abstract】 An experimental device is created by using Hall sensors, HC-05 bluetooth module, and STM32 microcontroller, which is capable of measuring weak magnetic field intensities and presenting measuring results in real-time on a smartphone.The operating principles of the device are explained in detail.By conducting multiple magnetic field measurement experiments at various positions and with differing coil turns, we collected extensive experimental data.Through the analysis and processing of the data, it is determined that the measurement range of the magnetic field detection device is ±40 GS and its resolution is 1 GS.Through analysing the uncertainty, the practicality and scientific validity of the device are confirmed.Furthermore, when compared to other electromagnetic field detection instruments—characterized by higher accuracy and broader detection ranges this magnetic field measurement device offers advantages such as lower cost and ease of operation, making it more suitable for meeting the general public’s magnetic field measurement requirements.更多还原