Failure of overhead dynamic message signs can have disastrous results with fast
The Datalink i50-VMS provides a back-up solution when the
fiber link fails at any time. An i50-VMS is attached to each sign and
connects to the highway signs message server. This communications link can
be over cellular GSM-GPRS, local UHF/VHF network or in remote areas over
The Iridium constellation of 66 low earth orbit
satellites provides world wide coverage and message delivery in typically 10
seconds. Smart technology within the i50-VMS adheres to the NTCIP protocols
and greatly reduces the "over the air" message size to keep satellite
airtime costs low.
The i50-VMS uses an IP-Port communication structure which should allow for
simple integration with existing message controllers.
The i50B has ten years of design experience behind it.
Internal module options include Iridium 9612 SBD Satellite modem, GSM GPRS
quad band modem and optional external Kenwood LMR UHF/VHF radio.
The latest variant addresses a need for remote control of
electronic highway signs in remote areas. The i50VMS can also provide an
easy switch over from fiber networks to a back-up link in the event of a
failure in the primary fiber link.
The i50-VMS requires our DataGate IP router software in
order to link to 3rd party legacy systems. This would normally be installed
on the same server that hosts the Message Sign control program. Connection
between the DataGate and the sign controller is normally over an IP/Port
address. Other options include read/write to a common database or via
Click here to view