›› 2011, Vol. 24 ›› Issue (5): 35-.

• 论文 • 上一篇    下一篇

Z-FFT变换在站内轨道信号解调中的应用

王丽萍,苗成伟   

  1. (兰州交通大学 电子信息工程学院,甘肃 兰州 730070)
  • 出版日期:2011-05-15 发布日期:2011-05-19
  • 作者简介:王丽萍(1984-),女,硕士。研究方向:交通信息工程及控制。
  • 基金资助:

    铁道部重点基金资助项目(2007X003-D)

Application of Z-FFT Transform in Station Demodulation of Cab Signals

 WANG Li-Ping, MIAO Cheng-Wei   

  1. (College of Electronics and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
  • Online:2011-05-15 Published:2011-05-19

摘要:

提出了基于Z-FFT变换解调站内ZPW-2000A轨道电路信号,实现站内闭环电码化机车信号的实时检测。该设计以双路TMS320F2812的DSP为硬件核心,双路DSP同时经过Z-FFT变换解调出低频和载频信号,通过DSP的SPI口实时对解调出的信息进行比较,提高了系统的可靠性。

关键词: DSP, Z-FFT, 机车信号

Abstract:

Based on Z-FFT transform demodulates station's ZPW-2000A track circuit signal,the closed loop detection of locomotive's signal code of the station in real time is realized.The design is based on the dual cores of the TMS320F2812 DSP.Z-FFT transform demodulates the low frequency and carrier frequency signal in the dual DSP,and compare information demodulated through the SPI port of DSP in real-time,thereby greatly enhancing the system reliability.

Key words: DSP;Z-FFT;cab signal

中图分类号: 

  • TN911.7