基于TDOA的有源RFID定位系统  

TDOA-Based Active RFID Localizing System

作　　者：唐军[1] 蒋朝根[1] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《工业控制计算机》2014年第7期66-67,共2页Industrial Control Computer

摘　　要：设计并实现了采用MSP430单片机和CC1101射频芯片,基于超声波和射频到达时间差的低功耗、高精度的室内定位系统,用于待定位标签的定位和追踪。系统主要采用超声波收发分离的方式,电子标签首先发送射频信号探寻信号范围内的阅读器数量,确定阅读器的数量后,再给阅读器发送一个射频信号,发出射频信号的同时,发送超声波信号,阅读器启用定时器计算接收到射频信号与超声波信号之间的时间差,并将数据传送给中心控制主机,控制主机通过三个圆相交于一点的方式计算出待定位标签的位置,并通过MFC程序图形化显示出来。实验结果表明,该系统具有较高的定位精度。This paper describes the design and implementation of a low-power,high-precision indoor localizing system for the locating tag to be located and tracked by using MSP430 MCU and CC1101 RF chip.The system mainly uses the way that Ultrasonic transceiver is separated. The electronic tag first sends out the RF signals to explore the number of Readers in the signal range,after confirming the number of the readers,it will send out a radio frequency signal to let the reader enable the timer,meanwhile,the tag will send out ultrasonic signal,the reader uses the timer to calculate the time difference of arrival between radio frequency signal and ultrasonic signal,at last,the data will be transmitted to the central control com- puter,the control host will calculate the position of the locating tag with the theory that three circles intersect at one point, then it will display the result graphically through the MFC program.

关 键 词：MSP430 CC1101 超声波定位 到达时间差 MFC 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]