基于磁通门传感器的数据采集和修正

以磁通门传感器的低功耗、高精度采集与大容量存储技术为需求目标,在优化方案的基础上,设计了采集数据、记录时间、存储数据并拟合修正的电路系统,重点对电路系统的构成和数据修正的方法进行研究与改进.在实际地磁环境下对样机进行测试,结果表明:整套装置的功耗降低至mW级别,地磁场测量值和准确值的偏差在20 nT以内,存储量达到了2GB,实现了预期目标.

Data acquisition and correction based on flux-gate sensor

In order to achieve low power consumption,high precision and large capacity storage technology of fluxgate sensor.On the basis of optimization scheme,circuit system of collecting data,recording time,storing data and fitting and correction is designed,focusing on composition of circuit system and data correction methods is studied and improved.The prototype is tested in actual geomagnetic environment,the results show that power consumption of the whole set of device is reduced to level of milliwatts,moreover,the deviation of Earth's magnetic field measurements and accurate value is less than 20 nT,and the storage capacity up to 2 GB,the expected goal is reached.