强激光与粒子束2017，Vol.29Issue(4)：125-128,4.DOI:10.11884/HPLPB201729.160466
霍尔传感器温度漂移补偿电路设计
Design of temperature compensation for Hall sensor
摘要
Abstract
Hall sensor's sensitivity drift as temperature vibrates limits its applications in magnetic measurement field.Common temperature compensation techniques mainly offset drift caused by first order temperature variation and simultaneously neglect error caused by second order temperature variation.In this paper,a circuit design is proposed adopting temperature transducer output signal to offset temperature drift through closed-loop feedback.Temperature transducer output signal multiplied by final output signal from signal processing circuit is sent to input port of signal processing circuit.This is distinguished from universal method of adding temperature transducer output signal with input signal of Hall element and then sending it to input port of signal processing circuit.Theoretical analysis and simulation certify that error caused by temperature drift can be eliminated entirely through equalizing feedback factor K to thermal drift factor a of Hall element.Therefore,by thermal drift compensation method of closed-loop feedback,first order and second order temperature variations can be compensated through adjusting feedback coefficient.And this method can be applied to other transducers concerning thermal drift.关键词
霍尔传感器/温度漂移/磁场测量/闭环反馈Key words
Hall sensor/temperature drift/magnetic field measurement/closed-loop feedback分类
信息技术与安全科学引用本文复制引用
国旗,傅鹏,蒋力..霍尔传感器温度漂移补偿电路设计[J].强激光与粒子束,2017,29(4):125-128,4.基金项目
国际热核聚变实验堆(ITER)计划专项(2011GB114000) （ITER）
