摘要
线性霍尔磁传感芯片的金属引线框架部件在待检测磁场中具有聚磁效应和涡流效应,会干扰待测磁场,使磁场强度偏离真实值,导致检测准确度变差。对含磁组分金属框架和不同结构尺寸的框架进行仿真分析后,得出无磁组分材质及小尺寸结构设计可改善金属框架对待检测磁场的干扰,并且对小尺寸结构框架的施工方案进行分析。最终制备得到一种线性霍尔磁传感芯片,通过自主搭建的环境对芯片进行测试,得到354.8 kHz的带宽值。
Metal lead frame components of linear Hall magnetic sensing chip working in detected magnetic field have magnetic accumulation effect and eddy current effect,which can interfere with the magnetic filed to be tested and make magnetic field strength shift the true value,resulting in a decrease in detection accuracy.After simulation analysis on metal frames containing magnetic components and frames with different structural sizes,it is concluded that non-magnetic component materials and small size sturcture design can improve interference of metal frame with detected magnetic field,the construction scheme of small-sized structural frames is analyzed.Finally,the linear Hall magnetic sensing chip is prepared and tested using the autonomous built environment,bandwidth of 354.8 kHz is obtained.
作者
叶明盛
时亚南
李菊萍
侯晓伟
YE Mingsheng;SHI Ya’nan;LI Juping;HOU Xiaowei(Ningbo CRRC Times Transducer Technology Co Ltd,Ningbo 315021,China)
出处
《传感器与微系统》
CSCD
北大核心
2024年第2期124-126,共3页
Transducer and Microsystem Technologies
基金
国家重点研发计划资助项目(2022YFB3207700,2021YFB3203200)。
关键词
电磁学
引线框架
磁场仿真
涡流效应
electro-magnetism
lead frame
magnetic field simulation
eddy current effect
