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光纤同轴电缆混合HFC(hybridfiberandcoaxial)网络是目前国际上广泛采用的有线电视传输方式。为实现HFC网络核心单元——光节点工作状态的远程自动监控,提出了HFC网络光节点监控系统的硬件组成,分析了该系统的数据速率、调制方式、带宽选取、数据结构以及通信协议。上述原理成功地应用于深圳有线电视网络的光节点监控系统的软件界面和功能模块。同时提出了一种防止安装箱非法开启的解决方法。所提出的原理和方法对于HFC网络光节点监控系统的开发具有指导作用。
Fiber Coaxial Hybrid HFC (hybridfiberandcoaxial) network is currently widely used in the cable television transmission. In order to realize the remote automatic monitoring of working status of optical node in HFC network, the hardware composition of HFC network optical node monitoring system is proposed. The data rate, modulation mode, bandwidth selection, data structure and communication protocol are analyzed. The above principle is successfully applied to the software interface and function module of the optical node monitoring system in Shenzhen CATV network. At the same time, a solution to prevent the installation box from opening illegally was proposed. The proposed principles and methods for the development of HFC network optical node monitoring system has a guiding role.