微型磁通门传感器的低功耗结构设计  

Design of low power consumption structure of micro fluxgate sensor

作　　者：吕辉[1,2] 刘诗斌[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129 [2]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《传感器与微系统》2015年第3期81-83,86,共4页Transducer and Microsystem Technologies

基　　金：高等学校博士学科点专项科研基金资助项目(20126102110031)

摘　　要：微型磁通门的功耗是影响其整体性能的关键因素。要降低功耗必须保证器件的薄膜铁芯能够在较小的激励电流下进入饱和状态,为此,可以通过降低铁芯的饱和磁场强度Hs来实现这一目标。设计了一种具有多孔结构薄膜铁芯的微型磁通门,经过有限元仿真分析发现,多孔结构能够降低磁通门铁芯的饱和磁场强度Hs,从而获得较小的饱和激励电流,在保证微型磁通门灵敏度的同时,有效降低器件功耗。Power consumption is a key factor which influences overall performance of micro fluxgate sensors. To reduce power consumption,must assure thin film iron core of the device can reach saturation state under small excitation current,by reducing saturation magnetic intensity Hsof iron core to achieve this aim. Design micro fluxgate with porous film core and it is found through finite element simulation analysis. Porous structure can be effectively used as a method to decrease value of saturation magnetic intensity Hs,so as to obtain low saturation excitation current,assure sensitivity of micro fluxgate sensor and effectively reduce power consumption at the same time.

关 键 词：有限元仿真 多孔铁芯 微型磁通门 低功耗 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]