Design, fabrication, characterisation and calibration of a three-axis, ring-core, second harmonic fluxgate magnetometer is described in detail. Owing to the good material selection, precise structural fabrication, and high-performance processing unit, in addition to implementation of a novel and effective calibration algorithm, the sensor features good characteristics such as \(0.1^{\circ }\) non-orthogonality, 0.03% accuracy and 0.08% linearity. The power consumption of the fabricated sensor is 0.7 W. We have also compared the noise level of two types of commercial ring cores and shown that the experimental findings confirm our expectation about the noise level of the cores. In addition, a novel calibration method using the neural network was used to reduce errors of the fluxgate sensor.

详细描述了三轴环形磁芯二次谐波磁通门磁力计的设计、制造、表征和校准。由于良好的材料选择、精密的结构制造和高性能的处理单元，除了实施新颖有效的校准算法外，该传感器还具有\(0.1^{\circ }\)非正交性等良好特性, 0.03% 的准确度和 0.08% 的线性度。制造的传感器的功耗为 0.7 W。我们还比较了两种商用环形磁芯的噪声水平，结果表明实验结果证实了我们对磁芯噪声水平的预期。此外，使用神经网络的新型校准方法用于减少磁通门传感器的误差。