In surface and underground train stations, customer surveillance is done via various networked cameras. These cameras can be controlled centrally and used to identify any suspicious or potentially dangerous incidents. Information collected form each camera is stored and can be accessed at a later date.

In the past Video Recording solutions required analogue cameras to be cabled back to the DVR’s (Digital Video Recorder) location no matter where this was. However, today IP cameras can be allocated IP addresses, networked and thereby made accessible via Ethernet networks without the need of extensive cabling.

IP based CCTV/surveillance systems are capable of producing large amounts of data all of which most often are stored on reliable hard disk drives (HDD). Servers with multiple HDDs dedicated to storing such data are often referred to as Networked Video Recorders (NVR).
A typical MPEG4 video stream from an IP camera/ video server can provide D1 (720 x 576) resolution video at 25 frames per second. Leading to the production and need for storage of up to 8TB of data per month.

A modern IP surveillance system should typically consist products that can provide 24/7 operation and have a life cycle of five years. This IP surveillance system usually comprises three key hardware components: high-reliability servers, IP network infrastructure and IP cameras.

In building and IP network infrastructure, it is worth considering ‘Power over Ethernet’ as an excellent cost-saving tool that allows cameras to be positioned up to 100m away from network infrastructure with no additional power connection to the camera need be made.

Whilst many companies are able to supply standard Ethernet switches, Amplicon can supply a fully 802.3af compliant EN 50155 industrial switch ideally suited to rail industrial applications.

Associated product
PS14P INDUSTRIAL SWITCH