大学物理 ›› 2016, Vol. 35 ›› Issue (11): 40-44.doi: 10.16854/j.cnki.1000-0712.2016.0165

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一种基于多源收发异体结构的室内移动目标超声定位系统

张沁言1,韩 仪2,王四海2   

  1. 1. 北京邮电大学数字媒体与设计艺术学院,北京 100876;2. 北京邮电大学理学院,北京 100876
  • 收稿日期:2015-09-08 修回日期:2016-05-26 出版日期:2016-11-20 发布日期:2016-11-20
  • 通讯作者: 王四海,E-mail:wshjlpa@ sina.com
  • 作者简介:张沁言(1996—)女,四川宜宾人,北京邮电大学数字媒体技术与艺术设计学院2014 级本科生.
  • 基金资助:
    北京邮电大学大学生研究创新基金、北京市共建项目(S-201510013027)专项资助

An ultrasonic location system for indoor moving target using multi-source and separated T/ R structure

ZHANG Qinyan1,HAN Yi2,WANG Sihai2   

  1. 1. School of Digital Media & Design Arts,Beijing University of Posts and Telecommunications,Beijing 100876,China;   2. School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China
  • Received:2015-09-08 Revised:2016-05-26 Online:2016-11-20 Published:2016-11-20
  • Supported by:
     

摘要: 提出一种高性能超声定位系统,采用红外和无线信号同时作为同步信号构成收发异体的定位结构,采用伪随机M序列进行载波扩频,形成码分多址的多基站收发机制,通过设计广角探头来扩大作用范围,设计温度补偿电路提高测量精度. 本系统能实现10 Hz 的测量速率和厘米级的测量精度,能有效实现室内移动目标的高精度定位.

关键词: 室内定位, 超声波, 码分多址, 嵌入式系统

Abstract: A high performance ultrasonic location system is proposed. Both infrared and radio signals are applied as synchronizing signals,forming a locating structure with separated transmitter and receiver. Pseudo random M sequence is utilized as spread spectrum carrier to form a CDMA-based multi-station mechanism. Wide-angle probes are designed for expanding the detecting area. In addition, a temperature compensation circuit is designed to improve the   measurement accuracy. This system can achieve 10 Hz sample rate and centimeter level measurement accuracy,and is verified to be effective for locating moving indoor targets.

Key words: indoor location, ultrasound, CDMA, embedded system

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