目 录1前 言..............................................................................42闭路监控及周界防备系统设计方案.....................................................42.1系统需求......................................................................42.2系统设计思想..................................................................42.3系统设计根据..................................................................52.4系统设计构造..................................................................52.5系统设计......................................................................6重要设备性能和参数........................................................6后端设计阐明..............................................................72.6系统功能及操作...............................................................10系统操作.................................................................102.7系统原理图...................................................................113背景音乐与公共广播系统.............................................................123.1市场分析.....................................................................123.2系统设计原理.................................................................123.3系统原理图...................................................................133.4原理及参数...................................................................133.5系统功能和操作...............................................................143.6系统操作.....................................................................153.7系统设计.....................................................................15详细设计.................................................................154楼宇可视对讲门禁系统(和第 5 部分选一种)...........................................174.1系统需求.....................................................................174.2系统设计思想.................................................................174.3系统设计根据.......................
