天津市监控公司

Precautions for monitoring the use of optical fiber in security engineering

一个好的安防系统，其线缆传输系统，更是在整个安防系统中起着举足轻重的地位，而安防系统中，光纤的应用更是一个非常大的部分。

A good security system, its cable transmission system, is also playing an important role in the whole security system, and the security system, the application of optical fiber is a very large part.

安全防范系统是建筑智能系统中的重中之重，好的安防系统对于安全的保障是不言而喻的。而一个好的安防系统，其线缆传输系统，更是在整个安防系统中起着举足轻重的地位，而安防系统中，光纤的应用更是一个非常大的部分。今天咱们说说，在实际中光纤的一些注意事项。

Safety guard system is the most important part of building intelligent system. It is self-evident that a good security guard system guarantees safety. And a good security system, its cable transmission system, is also playing an important role in the whole security system, and security system, the application of fiber is a very large part. Today, let's talk about some notices of optical fiber in practice.

光纤的选用除了根据光纤芯数和光纤种类，还要根据光纤的使用来选择光纤的外护套，在选用时要注意以下几点：

In addition to the selection of optical fiber according to the number of fiber cores and fiber types, but also according to the use of optical fiber to choose the outer sheath of optical fiber, in the selection of attention to the following points:

1. 户外用光纤直埋时，宜选铠装光纤，架空时，可选用两根或多根加强筋的黑色塑料外护套的光纤。

1. When outdoor optical fibers are buried directly,www.linyibanjia.org.cn www.diandongmeni.com.cn www.biaozhimoju.cnwww.fzqmoju.com.cnwww.zitongfudiao.cnwww.diandongmene.com.cn armored optical fibers should be selected. When overhead, two or more black plastic sheaths with stiffeners can be used.

2. 建筑物内用的光纤在选用时应该注意其阻燃，毒和烟的特性，一般在管道中和强制通风处，可选用阻燃和有烟的类型，暴露的环境中应选用阻燃、无烟和无毒的类型。

2. the fiber in the building should pay attention to its flame retardancy, poison and smoke, generally in the pipe and forced ventilation, the type of flame retardant and smoke can be selected, and the type of flame retardant, smokeless and non-toxic should be selected in the exposed environment.

3. 楼内垂直布线时，可选用层绞式光纤；水平布线式，可选用分支光纤。

3. in the vertical wiring of the building, the layer stranded optical fiber can be selected, and the horizontal wiring type may use branched optical fiber.

4. 传输距离在2km以内的可选用多模光纤；超过2km可选用中继或单模光纤。

4. multimode optical fiber with a transmission distance of less than 2km; relay or single mode optical fiber can be used for over 2km.