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Dover
Harbour Board has returned to Technographic Displays to extend their
existing PAXIS system to a network of seven displays
The PAXIS programme began
in 1993 with the installation of the first three LED displays. These
original displays were the first in Europe to use the (then)
newly-developed oval-lensed red-green outdoor LED clusters. The displays
proved to be effective and reliable, and, by 1996, the number of PAXIS
displays had increased to five.
In 1999, Dover Harbour Board embarked on an upgrading programme whereby
each of the five displays was upgraded to full-colour operation, making
use of the latest high-brightness red, green and blue LEDs. One display
was upgraded each year, until all five had been converted to full-colour
by 2003.
With the building of two new berths at the port to cater for the new
generation of larger ferries, Dover Harbour Board returned to
Technographic Displays, and the network of displays has now been
extended to seven.
The PAXIS displays feature full-colour, 50fps animation and networked
display controllers with fibre-optic drives to the displays. Each
display comprises 48 light-weight (11kg) ATD28 display modules for ease
of maintenance, and each module features an air-to-air heat exchanger
for reliable operation in a coastal atmosphere often laden with
salt-spray and diesel particulates. The displays operate at 50Vdc with
dual-redundant power supply units in every display module. Diagnostic
information is inserted into the fibre-optic data stream by each module,
and this information is fed back to the DC4500 display controller so
that it can be remotely monitored.
The new generation of PAXIS displays, designed, manufactured and
installed by Technographic Displays, has proved to be reliable and
long-lived, with PAXIS C (the first to be upgraded) still operating
perfectly after 63,000 hours. Many competing displays installed in 2000
have long-since become unreliable and have fallen out of use.
More projects at
the Port of Dover
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