磁通门磁强计利用高导磁铁芯,在交替变饱和激励下,实现将微弱的直流磁场转变为交流电压输出以便测量,是目前微弱磁场检测中较为理想的测试元件,具有高灵敏度、高精度和良好的稳定性等优点.但是传统的三分量磁通门磁强计的功耗和体积都较大,而本文设计了一种小型化且低功耗的三轴磁通门磁强计,其尺寸为124.46×81.66(mm),功耗为0.84W.本文对此磁强计的硬件设计,标定和测试进行详细阐述.实验结果表明,三轴磁通门磁强计的线性度非常好,精度可以达到11.3 n T. Fluxgate magnetometer using high permeability iron core, alternating saturation under excitation, to achieve the weak DC magnetic field into AC voltage output for measurement, is weak magnetic field detection is the ideal test component, with high sensitivity, high Accuracy and good stability, etc. However, the traditional three-component fluxgate magnetometer has larger power consumption and larger volume, and this paper designs a miniaturized and low-power three-axis fluxgate magnetometer , The size of 124.46 × 81.66 (mm), power consumption of 0.84W.This paper describes in detail the hardware design, calibration and testing of the magnetometer.The experimental results show that the three-axis fluxgate magnetometer linearity is very Good, the precision can reach 11.3 n T.