铁路信号的激光器驱动电源集中监控

Centralized monitoring of laser drive power for railway signals

为了提高铁路激光器驱动电源监控信号自动识别能力,实现铁路信号的激光器驱动电源集中监控,提出一种基于铁路信号激光器驱动电源集中监控方法。采用传感器进行铁路信号电源集中监控信息采集,对采集的信号模型采用空间阵列分布式设计方法进行空间信源模型构建,对采集的铁路信号采用相干检测法进行滤波检测,提取铁路信号功率谱密度特征,采用小波分析方法进行铁路激光器驱动电源监控信号的多元尺度分解,实现铁路激光器驱动电源信号的自动检测和集中监控。仿真结果表明,采用该方法进行的铁路信号激光器驱动电源集中监控能力较强,误码率低于10-1,下降幅度较大且迅速,信号传输延迟缩短了30%,提高了信号的自动检测和识别能力。

In order to improve automatic identification capability of the railway laser drive power monitoring signal and realize the centralized monitoring of the laser drive power of the railway signal,a centralized monitoring method based on railway signal laser drive power is proposed.The sensor is used to collect the centralized monitoring information of the railway signal power supply.The spatial signal distribution model is used to construct the spatial signal model for the collected signal model.The coherent detection method is used to filter the collected railway signals,and the power spectral density characteristics of the railway signal are extracted.The wavelet analysis method is used to carry out the multi-scale decomposition of the railway laser drive power supply monitoring signal to realize automatic detec・tion and centralized monitoring of railway laser drive power signal.The simulation results show that the centralized monitoring ability of the railway signal laser driver power supply by this method is strong,the bit error rate is less than 10-1,the reduction range is large and rapid,the signal transmission delay is reduced by 30%,and the automatic detection and recognition ability of the signal are improved.