电磁定位系统设计  

Design of electromagnetic positioning system

作　　者：包建孟 胡超[2] 林卫星[1] 王文虎[1,2] 王涛[1] 

机构地区：[1]宁波大学信息科学与工程学院计算机系,浙江宁波315211 [2]浙江大学宁波理工学院,浙江宁波315100

出　　处：《现代仪器与医疗》2014年第5期11-14,共4页Modern Instruments & Medical Treatment

基　　金：国家自然科学基金项目(No.61273332);宁波市自然科学基金项目(No.2012A610005)

摘　　要：为了实现空间较大范围内的移动目标定位跟踪,根据法拉第电磁感应定律,设计了一种电磁定位系统。此系统主要包括信号发射线圈和多轴接收线圈传感单元两部分。系统采用ST公司的ARM微控制器STM32F103来实现核心功能,并用特定的处理电路实现。功放电路对正弦信号进行放大,激励发射线圈产生交变磁场。三轴传感线圈感应磁场信号,得到三路模拟信号;采样处理后,通过计算得到相关位置参数。系统可以定位离信号源数米范围内的移动目标,满足室内的定位需求。According to Faraday’s law of electromagnetic induction,an electromagnetic positioning system was designed to realize the positioning of the motion object in wide range. This system uses transmitting coils for signal sources and multi-axial coils as the receiving sensors. The system was realized based on STM32F103,an ARM micro-controller of ST,as well as signal processing circuits. Sinusoidal signal is ampliifed through the power ampliifer circuit to stimulate emitting coil,and a speciifc frequency magnetic ifeld is built. After the three-axial sensor coils sample the magnetic ifeld,the positional parameter can be calculated by the embedded system. The moving objects can be localized within the range of several meters between the transmitter and the receivers,and satisfactory accuracy is obtained. This system meets the needs for majority of indoor positioning applications.

关 键 词：电磁定位 磁场发射线圈 三轴传感线圈 嵌入式系统 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TP368.1[自动化与计算机技术—控制科学与工程]