摘要
针对低功耗的手持导航应用,提出了一种基于数字磁阻传感器和MEMS加速度计的小型低功耗电子罗盘设计方案。介绍了电子罗盘工作原理、硬件设计及软件算法,并在分析磁性物质影响的基础上提出了合理可行的矫正方法。实验表明,该电子罗盘能准确测量罗盘朝向,并且功耗低、运行稳定,具有倾斜补偿及校正功能,可用于普通导航领域。
A low power consumption and portable electronic compass is designed in this paper, which is based on magnetoresistive sensors and digital MEMS accelerometer. In this paper the principle of electronic compass, hardware design and software algorithm are presented, the characteristics of magnetic materials are analyzed. Then a feasible correction method is proposed. The experiments show that this electronic compass can detect the direction accurately with low power consumption based on tilt compensation and correction. It can be used for portable navigation.
出处
《传感器世界》
2011年第6期35-38,共4页
Sensor World
