摘要
由意外原因使得网络中光纤通讯模块接收光功率过低直接引发通讯任务失败,这时需要一种监控和诊断手段来帮助管理员判断、预测网络中故障发生的位置,从而及时替换故障部件恢复网络通信。考虑到网络中多个光纤通讯模块需要实时监测并统一管理这一情况,文中提出了一种基于PCA9548的网络光纤通讯模块数字诊断的方法,在光纤通讯模块遵守SFF-8472协议的情况下,通过使用Vivado软件、Verilog语言、可编程门阵列FPGA编程,实现FPGA与光通讯模块进行参数交互从而监测光通讯模块的接收光功率,而且根据SFF-8472协议改变该程序中所使用的地址参数还可实现对模块温度、偏置电流等参数的监测,保证模块的可移植性和通用性。经过在开发板上实际验证以及Debug抓取实时信号,系统成功指示出正常通信时光功率在正常范围内,而光功率低于阈值时将导致的通讯失败,证明该方法切实可行。
It is common that,accidental means reduce the optical power of optical transceiver to cause the failure of communication task,there is need to provide the monitoring and diagnostic method to help the managers to judge and predict the location of fault occurred in the network,so as to replace the turbine components to restore network communication. Considering the realtime monitoring requirement and unified management of the multiple optical transceivers in the network,this paper presents a method of digital diagnosis used on optical transceivers based on PCA9548 and FPGA complied with the SFF-8472 agreement,this paper has realized the function of FPGA gets parameters from optical transceiver to monitor the optical power by the tools of Vivado software,Verilog,FPGA,and according to the SFF-8472 protocol,changing the address parameters in this program can also monitor the parameters of temperature to ensure portability and versatility.After the actual verification and Debug on the development board,this system designed by paper indicating the normal working condition made by optical power in the threshold range,and the optical power below the threshold range can cause the failure of communication task.The test proves that this method is feasible.
作者
庄洪毅
ZHUANG Hong-yi(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2018年第7期24-28,32,共6页
Instrument Technique and Sensor
