摘要
对基于磁阻传感器的磁偏角的测定方法进行探究和剖析,加深人们对设备设计原理的理解,拓展思路。此类磁偏角测定模块一般由两个易磁化轴垂直的磁阻传感器、小信号放大器、低通滤波器、模数转换设备及I2C和SPI数据传输设备组成。本测定方法的体积小,易集成化,精度高,原理简单在手写式移动设备中得到了广泛的应用。
This article introduces a way of Determination of geomagnetic declination based on magnetoresistive sensor.Such module of geomagnetic declination formed by two magnetoresistive sensor whose easy magnetization axis is vertical,small-signal amplifier,low-pass filter,analog-digital conversion equipment and Data transmission equipment of I2C and SPI.The determination's size is small,can be integrated easily.It's precision is very high.Principle is very simple.So it is widely used in the pen-based mobile devices.
出处
《数字技术与应用》
2011年第10期146-147,共2页
Digital Technology & Application
基金
中国地质大学(北京)大学生创新实验计划项目经费资助
关键词
磁阻传感器
惠斯通电桥
低通滤波器
放大器
magnetoresistive sensor
wheatstone dridge
low-pass filter
amplifier
