电子器件
電子器件
전자기건
JOURNAL OF ELECTRON DEVICES
2015年
2期
357-361
,共5页
弱磁场传感器%GMI效应%闭环%非晶带
弱磁場傳感器%GMI效應%閉環%非晶帶
약자장전감기%GMI효응%폐배%비정대
weak magnetic sensor%GMI effect%closed-loop%amorphous ribbon
利用脉冲电流退火处理后的Co66.3 Fe3.7 Si12 B18非晶带作为敏感元件，研制出一种基于非晶带GMI效应的闭环磁场传感器。分析了传感器的工作原理，设计了传感器的信号处理以及负反馈电路，并对传感器性能进行了测试。闭环传感器在线性量程为±260 A/m范围内，线性度提高为0.49%。传感器可应用于地球磁场、环境磁场等微弱磁场检测领域。
利用脈遲電流退火處理後的Co66.3 Fe3.7 Si12 B18非晶帶作為敏感元件，研製齣一種基于非晶帶GMI效應的閉環磁場傳感器。分析瞭傳感器的工作原理，設計瞭傳感器的信號處理以及負反饋電路，併對傳感器性能進行瞭測試。閉環傳感器在線性量程為±260 A/m範圍內，線性度提高為0.49%。傳感器可應用于地毬磁場、環境磁場等微弱磁場檢測領域。
이용맥충전류퇴화처리후적Co66.3 Fe3.7 Si12 B18비정대작위민감원건，연제출일충기우비정대GMI효응적폐배자장전감기。분석료전감기적공작원리，설계료전감기적신호처리이급부반궤전로，병대전감기성능진행료측시。폐배전감기재선성량정위±260 A/m범위내，선성도제고위0.49%。전감기가응용우지구자장、배경자장등미약자장검측영역。
A magnetic field sensor based on GMI effect is developed by using Co66.3 Fe3.7 Si12 B18 amorphous ribbon annealed by pulsed current. The operation principle of the sensor is analyzed. The signal processing and negative feedback circuits are designed and the sensor performance is also tested. The linearity of closed-loop sensor is 0. 49% within the range of ± 260 A/m. The sensor can be used in the weak magnetic measurement field including earth magnetic field and environmental magnetic field.
