摘要
针对二维电子罗盘功耗、体积、精度较难平衡等问题,设计了一款基于GMR传感器的车载二维电子罗盘。使用新型的GMR传感器测量磁场,采用集成3个独立Δ-ΣA/D模块的单片机进行模拟信号调理、模数转换和数字信号处理。在保证精度的同时减小了罗盘体积,降低了功耗。测试结果表明,本罗盘具有一定的抗干扰能力。
Aiming at the problems such as the balance of consumption,volume and accuracy of two-axis electronic compass,a vehicle two-axis electronic compass is designed based on GMR sensor.The scheme uses new GMR sensor to measure magnetic field,and adopts MCU integrated three separate Δ-Σ A/D modules for analog signal conditioning,analog-to-digital conversion and digital signal processing.Ensuring the precision,the design also reduces the volume and lowers power consumption.Test results show that the compass has certain anti-interference ability.
出处
《单片机与嵌入式系统应用》
2012年第9期36-38,共3页
Microcontrollers & Embedded Systems
