A Single-chip Solution for Railway Frequency-shift Signal Detection
Frequency-shift automatic blocking system has been widely applied in Chinas railway system. High-precision detection of the frequency-shift signal is important to railway driving safety. In this paper, a new algorithm for railway frequency-shift signal detection on the basis of frequencydomain analysis was presented. The main and accessory frequencies of railway signal were separated using FIR digital filtering technology. By combining under sampling technology, Zoom-FFT and energy centrobaric correction technology , detection of the low frequency and the upper/down side frequency of the railway signal were realized. This algorithm has been verified on ARM processor, test results demonstrate that this solution has the advantages of high accuracy, low complexity, good reliability and low cost, which is fit for railway frequency-shift signal detection.
frequency-shift signal under-sampling Zoom-FFT energy centrobaric correction
Yang Fan Dai Shenghua
School of Electronics and Information Engineering Beijing Jiaotong University, 100044 Beijing, China
国际会议
北京
英文
1-5
2010-06-25（万方平台首次上网日期，不代表论文的发表时间）