安防系统中摄像机供电方式选择分析

Analysis of the Selection of Camera Power Supply Mode in Security System

文章简述了摄像机供电的两种形式,并以集中供电方式为主,从POE供电和单独电源线供电两种方式的布线形式、供电原理、供电距离以及典型案例中主要设备的投资对比分析来阐述各系统的优缺点。

This paper briefly describes 2 kinds of power supply used for the camera. And it focuses on the centralized power supply. From the wiring mode of POE power supply and separate power line supply, the principle, the distance away from the power supply, and comparative analysis of the investment on major equipment in typical cases, it illustrates the cons and pros of each system.