为了实现地磁场探测设备小型化的要求,设计了一种基于各向异性磁阻传感器的三轴磁场探测系统。系统模块包括磁场探测单元、置位/复位单元、信号处理单元、单片机控制及显示单元和电源模块,其中磁场探测单元采用了Honeywell公司生产的HMC1021Z单轴和HMC1022双轴传感器。测试实验结果表明,探测系统可以对地磁场进行有效测量,具有体积小、功耗低及精度高等优点。 In order to realize the miniaturization of geomagnetic field detection equipment, a three-axis magnetic field detection system based on anisotropic magnetoresistive sensor was designed. The system module includes a magnetic field detection unit, a set / reset unit, a signal processing unit, a singlechip control and display unit, and a power supply module. The magnetic field detection unit adopts a HMC1021Z single axis and a HMC1022 dual-axis sensor manufactured by Honeywell. The test results show that the detection system can effectively measure the magnetic field, with the advantages of small size, low power consumption and high accuracy.