基于时间戳的时间信号自适应辨识与解析

Adaptive Recognition and Analysis of Time Signal Based on Timestamp

在时间同步监测装置中,需要对IRIG-B(DC)、PPS、PPM、PPH、DCF77和时间串口报文等时间信号进行采集处理。通常IRIG-B(DC)、PPS、PPM、PPH、DCF77采用硬件逻辑电路接收处理,而时间串口报文信息的接收需要借助串口通信模块,并需对串口通信模块进行参数设置。因此,采用了一种基于时间戳的时钟信号处理方式,在FPGA上对这类时间信号进行统一采集处理,提取时间信号特征量对各种时间信号进行自适应识别与解析,简化了装置的硬件结构。同时,还可以根据时间戳对时间信号的准确度和稳定度进行评价。

In time synchronization monitoring device, the acquisition and processing for IRIG - B （ DC）, PPS, PPM, PPH, DCF-/7, time serial message and other time signal need to be carried out. Typically, IRIG - B （ DC）, PPS, PPM, PPH, DCF77 receive the processing using hardware logic circuit, and the processing received by time information serial message needs to use serial communication module which should set parameters for serial communication module. Therefore, the clock signal processing method based on timestamp is adopted to deal with this kind of time signals on FPGA and extract time signal feature quantity to do the adaptive identification and analysis for various time signals, which simplifies hardware structure of the device. At the same time, it can analyze the accuracy and stability of time signal according to the timestamp.