基于薄膜磁阻传感器的弱磁测量系统的设计  

Design of System for Weak Magnetic Fields Measurement Based on Thin-Film Magnetoresistance Sensors

作　　者：白慧[1] 

机构地区：[1]东华大学,上海200051

出　　处：《仪表技术与传感器》2006年第10期30-31,34,共3页Instrument Technique and Sensor

摘　　要：介绍了Philips公司生产的薄膜磁阻传感器KMZ51的内部结构、测量原理,以及用于微弱磁场测量系统的软硬件设计方法。着重介绍了传感器内集成的触发线圈和补偿线圈驱动电路的设计方法,以及上位机软件的设计方法。触发线圈驱动电路基于可编程逻辑器件CPLD而设计;上位机软件采用虚拟仪器编程语言LabWindows/CVI编写。该系统可作为微弱磁场测量的基本系统,并可用于基于弱磁测量的一些应用领域。Introduced the structure and principle of the thin-film magnetoresistive sensor KM731 manufactured by Philips, and gave out the software and hardware design method of using the sensor in a certain system for weak magnetic fields measurement. Especially introduced the design method of drive circuits for flip coil and compensation coil, and also introduced the software design on PC. Drive circuit for flip coil was based on CPLD;software design used LabWindows/CVI.The system can be used on some application fields based on weak magnetic fields measurement.

关 键 词：磁阻传感器 弱磁测量 薄膜 可编程逻辑器件 软件 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]