Light Management Dictionary
Central Monitoring System:
A central monitoring system monitors your technical installation and gathers all collected information
to a single location. This makes monitoring a light management system fast and easy, no matter how
complicated the location is. Central monitoring systems can be customised to fit the application perfectly.
A system architecture or systems architecture is the conceptual model that defines the structure, behavior,
and more views of a system. An architecture description is a formal description and representation of a
system, organized in a way that supports reasoning about the structures and behaviors of the system.
A mesh network is a network topology where each node receives and pass on data to the network. This
way all nodes cooperate in the distribution of data in the network.
In a star topology network commands are distributed from a single node to the rest of the network. The
commands received by the other units are not passed on unless the units are programmed to do so.
Lighting solutions that mimics the qualities of daylight to enhance human performance, wellbeing and to
support a favorable circadian rhythm.
Pulse Width Modulation (PWM):
Pulse Width Modulation refers to the concept of changing the pulse width of a digital signal on a wire.
When dimming a LED source PWM is used to simulate a varying static voltage.
Tuneable white technology:
Tunable white light is a technology that enables users to adjust the color temperature of a luminaire.
The technology is based on two white light sources with different colour temperatures and a mixing
chamber (e.g. the luminaire). Users can modify the correlated color temperature (CCT) and intensity of the
luminaire with an input from a light management system.
RGB refers to the primary colours, red green and blue. Any colour in the colour spectrcum can be
described by its content of the primary colours. In order to make light with different colours you need to
combine individual LEDs with radiation in the red, green and blue spectrum. This is referred to as RGB in
In a CIE colour diagram all colours can be described with an X-Y coordinate. In DALI DT8 X-Y coordinates
is one way to describe a specific colour.
A passive infrared sensor (PIR) is an electronic sensor that measures infrared light (heat) radiating from
objects in its field of view. In front of the IR sensor a special lens is placed. When the system measures
IR radiation moving from one lens segment to another it is interpreted as presence. PIR sensors are most
often used in PIR-based motion detectors.
Digital Addressable Lighting Interface is a standardized (IEC 62386) protocol describing digital
communication between lighting devices enabling them to be addressed individually and is a protocol
set out in the technical standard IEC 62386.
Dali Device Type 8 (DT8):
Part of DALI protocol that is used to modify colours and colour temperatures. DT8 is used to create Human
Centric Lighting solutions.
KNX is a standardized (EN 50090, ISO/IEC 14543), Open system interconnection model (OSI) based
network communications protocol for building automation.
BAC net is an open communications protocol for Building Automation and Control (BAC) networks that
can implement the ASHRAE, ANSI, and ISO 16484-5 standard protocol.
LonWorks (local operating network) is a networking platform specifically created to address the needs of
control applications. The platform is built on a protocol created by Echelon Corporation for networking
devices over media such as twisted pair, powerlines, fiber optics, and RF.
The Internet of Things (IoT) connects machines and devices to one another.
Building Information Modelling:
Building Information Modelling (BIM) is an intelligent 3D model-based process that gives architecture,
engineering, and construction (AEC) professionals the insight and tools to more efficiently plan, design,
construct, and manage buildings and infrastructure.
Power over Ethernet (POE) is a technology that lets network cables carry electrical power.
Visible Light Communication:
Visible light communication (VLC) is a data communications variant which uses visible light between 400
and 800 THz (780–375 nm). VLC is a subset of optical wireless communications technologies.
Light Fidelity or Li-Fi is a Visible Light Communications (VLC) system running wireless communications
travelling at very high speeds. Li-Fi uses LED luminaires to enable data transfer, boasting speeds of up to
224 gigabits per second.
Internet of People (IoP) encompasses internet-enabled personal electronics.
Small Bluetooth radio transmitter.