摘要
介绍了三分量磁阻式磁力仪的实现原理,设计了基于磁阻传感器、惯性测量单元(IMU)、ARM7微控制器的近海底三分量磁力仪的电子系统。分析了各传感部件的选型要点,给出了从信号调理电路、高精度数据采集电路、到大容量数据存储的硬件实现方案,以及基于μC/OS-Ⅱ实时操作系统和嵌入式文件系统库(EFSL)的软件实现方案。与传统的磁力仪相比,该系统有体积小,功耗低,抗干扰能力强等优点,能方便地应用于近海底地磁测量。
Implement principle of three-component magnetoresistive magnetometer was described. Electronic system of near sea-bed three-component magnetometer based on magnetoresistive sensor, inertial measurement unit, ARM7 microprocessor was designed. Sensor choosing tips were given. The whole hardware scheme included signal conditioning circuit, high-definition data acquiring circuit, large-amount data storage and the software scheme based on theμC/OS-Ⅱ real-time operating system and em- bedded filesystem library （EFSL）. Compared with traditional magnetometer, this system has advantages such as small size, low power consumption and good anti-interference ability. And it can be applied in near sea-bed geomagnetism measurement.
出处
《仪表技术与传感器》
CSCD
北大核心
2009年第7期26-29,共4页
Instrument Technique and Sensor
关键词
磁力仪
磁阻传感器
惯性测量单元
高精度测量
ARM7
magnetometer
AMR sensor
inertial measurement unit（IMU）
high-definition measurement
ARM7
