摘要
提出了一种小型化的弱磁矢量检测系统。分析了系统的检测原理,采用专用IC驱动三轴PNI电感式传感器,STC单片机对传感电路进行配置和数据采集,VC++语言编写上位机显示界面,开发出面积5 cm×2.5 cm、功耗3 m W的小型弱磁矢量探测系统,并在磁屏蔽桶中对系统的分辨率和线性度进行了标定。结果表明:系统的最佳分辨率可以达到15.57 n T,线性工作区域为±200μT,具有体积小、功耗低、分辨率高、工作范围大等优势,应用前景广阔。
A miniaturized weak vector detection system for weak magnetic field is proposed,detecting principle of system is analyzed. Using special IC to drive the three axis PNI inductive sensors,realize sensing circuit configuration and data acquisition by STC MCU,and program upper PC display interface based on VC ＋ ＋language,a miniaturized vector detection system for weak magnetic field,which owns the size of 5 cm × 2. 5 cm and the power consumption is 3 m W,is develop and then calibrate distinguishability and linearity in magnetic shielding cylinder. Results shown that the sensing scheme can obtain the distinguishability of up to 15. 57 n T and linearity working range is of ± 200 μT,and the detection system has advantages of small size,low power consumption,high distinguishability and wider working range,has good application prospect.
出处
《传感器与微系统》
CSCD
2015年第11期89-91,95,共4页
Transducer and Microsystem Technologies
基金
国家自然科学基金面上项目(51371105)
三峡大学超前研究基金资助项目(KJ2013C001)
关键词
磁传感器
电感式传感器
弱磁探测
分辨率
线性度
magnetic sensor
inductive sensor
weak magnetic detection
distinguishability
linearity
