Metro Station Video Transmission System – Shanghai Metro Line Project

Case Detail

Project Background

Metro environments present challenges such as high electromagnetic interference, long-distance transmission, and distributed stations. A stable and interference-resistant solution was required.

Solution Architecture

A fiber-centric transmission system was implemented:

PoE switches deployed at each station for camera access
Fiber uplink between station levels (platform & concourse)
Ring fiber topology between stations
Central control center for unified monitoring

Key Equipment Used

Industrial DIN-rail PoE switches (wide temperature range)
EMI-resistant Gigabit fiber media converters
Video fiber optic transceivers for tunnel long-distance transmission
ERPS industrial ring protection protocol

Project Results

24/7 uninterrupted metro operation support
Strong resistance to electromagnetic interference
Near-zero packet loss in video transmission
Real-time emergency dispatch capability