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发明公开
CN107359978A 一种基于数据转发延时测量的HSR/PRP网络采样同步方法 无效 - 驳回

一种基于数据转发延时测量的HSR/PRP网络采样同步方法
摘要：
本发明公开了一种基于数据转发延时测量的HSR/PRP网络采样同步方法：通过在HSR/PRP网络基本通讯单元RedBox的输入、输出端口对SV报文打时间戳，对SV报文在RedBox上传输延时的测量和累加并写入报文时间域中，实现HSR环、HSR环与PRP网络间设备的SV报文累积传输时间精确测量，SV报文接收装置(如保护、测控等装置)以本地时钟为基准，根据接收报文时间域中的值推算合并单元SV报文发送时刻，实现采样数据同步。采用这种同步方法，可有效地解决HSR/PRP网络采样同步依赖公共时钟信号的问题。
摘要（英）：

The invention discloses an HSR/PRP network sampling synchronization method based on data forwarding time-delay measurement, and the method comprises the steps: giving a timestamp to an SV message at the input and output ports of a basic communication unit RedBox of an HSR/PRP network; carrying out the measurement and accumulation of transmission time delay of the SV message on the RedBox, and writing the accumulated time delay into a message time domain, thereby achieving the precise measurement of the accumulated transmission time of the SV message among HSR rings and between the HSR rings and a PRP network; enabling an SV message receiving device (such as a protection device, a measurement and control device) to take a local clock as the reference, and deducing the transmitting moment of an SV message of a merging unit according to a value in a time domain of the received message, thereby achieving the synchronization of sampling data. The method can effectively solve a problem that the sampling synchronization of the HSR/PRP network depends on a public clock signal.

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