摘要
介绍了一种基于MEMS的三维磁阻传感器和加速度传感器的电子指南针系统。相对于由两轴磁阻传感器制造的电子指南针,该系统能够有效补偿倾斜角产生的误差。重点介绍了该系统的测量原理、硬件设计、软件流程。通过中位置均值滤波、限幅滤波、一阶滞后滤波,最大误差控制在1°以内。实验结果表明:本系统可以满足于一般导航领域的要求。
An electronic compass which based on accelerometer and MEMS 3D magnetoresistive sensor is introduced.Compared with the electronic compass which based on 2-axes magnetoresistive sensor,this system can effectively compensate the angle error.The principle of measurement,hardware design and software process are introduced.By the method of intermediate average filtering,limit filtering and first order lag filtering,the maximum error of the system is less than 1°.The experiment result shows that the system can meet the demand of common navigatation field.
出处
《传感器与微系统》
CSCD
北大核心
2011年第8期83-85,88,共4页
Transducer and Microsystem Technologies
