线性霍尔传感器在直线位移中的应用  

Application of Linear Hall Sensor in Linear Displacement Measurement

作　　者：黄明[1] 尚群立[1] 余善恩[1] 

机构地区：[1]杭州电子科技大学自动化学院,浙江杭州310018

出　　处：《自动化仪表》2010年第3期66-68,71,共4页Process Automation Instrumentation

基　　金：国家"863"计划资助项目(编号:2006AA040304);国家自然科学基金资助项目(编号:60774031)

摘　　要：为了实现实时的无接触直线位移测量,通过线性霍尔传感器获取磁场强度信号,采用定时中断方式完成数据采集,并以MSP430F169单片机作为运算及控制单元。考虑到普通的永磁无法形成梯度、线性的磁场分布,因此,在改进磁铁结构的基础上,提出了线性霍尔传感器非线性方法的测量方案,实现了对位置信号的无接触实时精确测量。实验结果表明,该霍尔变送器系统能实现对位置值的准确测量。To implement real-time non-contact linear displacement measurement, the linear Hall sensor is used to acquire the intensity signal of magnetic field, and the timing interrupt measure is used to accomplish data acquisition; and with MSP430F169 single chip computer as operation and control unit. Considering the method using normal magnet is unable to form gradual or linear magnetic distribution, the non-linear measuring strategy with linear Hall sensor and improved structural magnet is proposed for implementing non-contact, precise and real-time measurement of position signal. The result of experiment indicates that accurate position measurement can be realized by this Hall sensor system.

关 键 词：直线位移 线性霍尔传感器 非线性 磁铁结构 无接触测量 磁场分布 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]