电视监控系统树形控制网络结构与性能

Structure and performance of tree-like control networks in TV monitoring system

探讨了大型光纤闭路电视监控系统的控制网络的结构和联网方式．用单 片机实现树形控制网络，具有联网和扩容方便、优先处置灵活、线路阻塞概率 小等优点，对树形网络和总线形网络的线路阻塞概率作了推导和比较，并应 用到大连市中山公安分局站前地区治安管理光纤闭路电视监控网中．

A discussion is given to the structure and connection of control networks used in large optical fiber television monitoring systems. The tree-like control networks implemented by monolithic chip computer have many advantages, such as convenience for connection and expansion, flexibility for privilege processing ,and little probability of blocking ,etc. Derivation and comparison are made for both bus and tree-like networks ,and some good performances of the latter are also shown in the paper.