Video surveillance cameras
have also grown in popularity and use as an effective
tool for traffic control and management. Video cameras
can provide real time, full-motion feedback as traffic
problems develop, whether at a city intersection or on
a major freeway. New Power over Ethernet (PoE) models
add simplicity and convenience.
Traditionally, serial communications lines have been
employed to transmit traffic control signals. However,
live video, as part of an intelligent transportation
system (ITS), requires a transmission bandwidth up to
100 times greater than the standard serial links.
Furthermore, the video signal often must be transmitted
over a distance of several miles, usually to a central
traffic operations center (TOC). Fiber optic cabling
is the preferred medium to carry the video signal, since
fiber optic cabling has a very large bandwidth and is
immune to magnetic interference.
The combination of high bandwidth demand along with
fiber cabling has resulted in the emergence of Ethernet
as the protocol of choice for video surveillance and
traffic control systems. Ethernet’s virtually unlimited
bandwidth, ruggedness, scalability, and inexpensive
systems components make it a natural for the new
generation of video surveillance,
Intelligent Transportation
Systems and other
outdoor applications.
IP Video Surveillance requires hardened networking
products that can be installed in temperature
uncontrolled environments. A full range
of rugged Magnum Ethernet products, including PoE, is
available. |
