磁性材料及器件
磁性材料及器件
자성재료급기건
JOURNAL OF MAGNETIC MATERIALS AND DEVICES
2015年
1期
64-68
,共5页
非晶带%巨磁阻抗效应%磁场传感器%闭环%设计%性能
非晶帶%巨磁阻抗效應%磁場傳感器%閉環%設計%性能
비정대%거자조항효응%자장전감기%폐배%설계%성능
amorphous ribbon%giant magneto-impedance effect%magnetic sensor%closed-loop%design%performance
利用钴基非晶带作为敏感元件，研制出一种基于非晶带GMI效应的磁场传感器。分析了传感器的工作原理，设计了该传感器的信号处理以及负反馈电路。通过负反馈方法组成闭环系统，提高了传感器的测量范围、线性度等性能。对传感器性能进行了测试，实验结果表明：在-260~+260 A/m磁场范围内，传感器线性度为0.57%，灵敏度为3.23mV/A·m-1，满量程输出1.68V。本传感器可应用于地球磁场、环境磁场等微弱磁场检测领域。
利用鈷基非晶帶作為敏感元件，研製齣一種基于非晶帶GMI效應的磁場傳感器。分析瞭傳感器的工作原理，設計瞭該傳感器的信號處理以及負反饋電路。通過負反饋方法組成閉環繫統，提高瞭傳感器的測量範圍、線性度等性能。對傳感器性能進行瞭測試，實驗結果錶明：在-260~+260 A/m磁場範圍內，傳感器線性度為0.57%，靈敏度為3.23mV/A·m-1，滿量程輸齣1.68V。本傳感器可應用于地毬磁場、環境磁場等微弱磁場檢測領域。
이용고기비정대작위민감원건，연제출일충기우비정대GMI효응적자장전감기。분석료전감기적공작원리，설계료해전감기적신호처리이급부반궤전로。통과부반궤방법조성폐배계통，제고료전감기적측량범위、선성도등성능。대전감기성능진행료측시，실험결과표명：재-260~+260 A/m자장범위내，전감기선성도위0.57%，령민도위3.23mV/A·m-1，만량정수출1.68V。본전감기가응용우지구자장、배경자장등미약자장검측영역。
A magnetic field sensor based on GMI effect was developed by using Co-based amorphous ribbon, and its operation principle analyzed. The signal processing and negative feedback circuits were designed. The measurement range and linearity of the sensor are improved by designing negative feedback forming closed loop system. A sensor was developed with linearity of 0.57%, sensitivity of 3.23mV/A·m-1, full-scale output of 1.68V, and magnetic field test range from-260 to+260A/m. The sensor can be used for weak magnetic field measurement including earth and environmental magnetic field.
