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数字化视频监控系统集成设计中关于传输部分设计的基本要求有哪些

发布日期:2016/09/20 08:00:00

  数字化视频监控系统集成的设计包括视频监控系统的工程设计、摄像部分的设计、监控室的设计、传输部分的设计,以及数字视频监控系统的组成的设计等。这些内容都需要按照一定的要求进行设计,其中,容易让人忽略掉传输部分的设计,也必须根据以下基本要求来进行:

  1、 系统的图像信号传输方式,应符合:传出距离较近可采用同轴电缆传输视频基带信号的视频传输方式;传输距离较远,监视点分布广,应采用同轴电缆传输射频调制信号的射频传输方式;长距离传输或需避免强电磁场干扰的传输应采用传输光调制信号的光缆传输方式。另外,有防雷要求时,还应该使用无金属光缆。

  2、 系统的控制信号可以使用多芯线直接传输或将遥控信号数字编码后用电或光缆传输。

  3、 传输电、光缆的选择应满足:同轴电缆在满足衰减、屏蔽、弯曲、防潮性能要求的同时选用线径较细的同轴电缆;光缆的选择满足衰减、带宽、温度及物理特性、防潮等要求。

  4、 传输路线由设计应满足:路由应短捷、安全可靠、施工维护方便,应避开恶劣环境条件或易使管线损伤的地段;与其他管线等障碍物不宜交叉跨越。

  根据以上要求,数字化视频监控系统集成的设计才能确保系统里的各种信号信息的传递快、准且清晰。

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