基于MSP430的磁阻罗盘自差自动校正设计

Digital Magnetic Compass Autodyne Automatic Elimination Based on MSP430

由于磁航向测量系统应用领域日趋拓宽,数字磁罗盘的航向精度亟待提高。简要介绍了由磁阻罗盘、角度传感器和单片机组成的数字磁罗经系统的软硬件组成及工作原理。探讨了使用八角度法进行误差补偿的可行性。通过实验验证能准确自动消除自差实现导航数据的精确、实时、高清晰的显示。

As magnetic heading measurement system applications increasingly expanding,the direction accuracy of the digital magnetic compass needs to be improved.This paper briefly introduces the hardware structure,software design and working principle of the digital magnetic compass system which composed by the magnetic compass,angle sensor and microcontroller. The feasibility on the use of eight point method for autodyne compensation was discussed.Through experiment,system can automatically eliminate autodyne to achieve accurate,real-time and clear heading data display.