【作者】 徐庆富； 李长俊； 江明珠； 陈尚松；

【Author】 Xu Qingfu Li Changjun Jiang Mingzhu Chen Shangsong (Institute of Information Technology,Guilin University of Electronic Technology,Guilin,541004)

【机构】 桂林电子科技大学信息科技学院；

【摘要】 光通信传输带宽已经从Gbit/s向Tbit/s发展。如此大的通信容量,一旦发生光纤故障,将带来巨大的损失。为此,需要进行光路保护,当主路出现故障迅速切换到各路,保证无间隙通信。基于虚拟仪器的光路保护系统采用美国国家仪器公司的NI-LabVIEW开发环境进行开发,通过硬件电路与采集卡,对主、备路的光纤状态进行实时采集,当主路出现故障时立即切换到备路,切换时间小于10ms,大大低于ITU-T G.841标准所规定的50ms,确保光路通信畅通无阻,具有实时性强、动态性能良好,运行稳定可靠等优点。更多还原

【Abstract】 The broadband transmission of fiber communication has developed from Gbit/s to Tbit/s.With so huge message capacity, it will bring about huge losses if fiber breaks down.Therefore,the light route needs to be protected.The main route will switch to stand-by route immediately when it goes wrong,which ensures smooth communication.The development of the light route protection system is based on the development environment of NI-LABVIEW of NI.Hardware and acquisition card are used to make real-time acquisition for the state of the main route and stand-by route.The main route will switch to the stand-by route when it breaks down.The switching time is less than 10ms,which is much less than 50ms by ITU-T G841 standard,making sure that the communication goes smoothly.This system possesses advantages such as strong real-time,dynamic performance and stable operation.更多还原