User's Manual

ST Engineering Telematics Wireless Ltd
4
1. Street Lighting Control
Street lighting is one of the most essential services provided by municipalities and the lighting’s electricity
bill is one of their major expenses. The Telematics Wireless’ T-Light™ networks enable municipalities and
utilities to control and manage street light operations with operational efficiency and cost-effectiveness.
T-Light Galaxy Network – a wide area network utilizing a single Base Station that covers an area of up to
20 km radius and monitoring directly thousands of luminaries.
The Galaxy network comprises of three major elements:
LCU – Light Control Unit / Node, installed on top or inside the luminaire (external “NEMA” or internal
configuration), enabling the transmission of information, and the reception of control commands for the
luminaire’s LED fixtures. Includes built-in energy metering and possesses auto-commissioning
functionality.
DCU – Data Communication Unit / Base station - The information from and to the LCU is routed via
the DCU and via the Internet, using GPRS/3G or Ethernet connections directly to the BackOffice
application.
CMS – Control and Management System- is a web-enabled BackOffice application, accessible at any
location in the world simply by using a standard browser, such as Internet Explorer or Google Chrome.
CMS usually contains a database of static and dynamic LCU information: ambient light values, lighting and
dimming schedules, power usage, status, etc.
Figure 1 – System Topology