A Xeleum article on controls technology in the lighting industry makes the front page of Lighting News at LightFair:
LED LIGHTING WITH CONTROL TECHNOLOGY
The Next Frontier
Robert L. Diamond, Xeleum Lighting CEO
Now that LED technology has entered the mainstream for both new and retrofit lighting installations, attention is quickly being drawn to the use of control and sensor technology to further reduce energy usage in commercial and industrial applications. Because an LED is a semiconductor device, it lends itself to far less complicated control technology than do legacy lighting types such as incandescent, fluorescent and high intensity discharge where higher levels of voltage and current are involved and the control mechanisms are inherently more complicated than that of simple low voltage diodes.
The basic purpose of controls is to make the lighting occur only where and when it’s desired, and at a specified amplitude. LEDs can cut lighting energy usage roughly in half and effective control technology can cut it in half again.
For example, a large warehouse that might have been continuously and brightly illuminated over its entire floor space may now have its 250 watt metal halide high bay fixtures replaced with 120 watt LED fixtures that can be grouped to provide full lighting only in areas where there is activity. In the remaining spaces, illumination is reduced to a preset dim level, or to fully off. To locate where activity is occurring, the LED fixtures may have built-in sensors for motion and, if the building has access to natural sunlight, the fixtures may also have built-in light level sensors for daylight harvesting.
For operation in commercial and industrial locations such as large buildings, multi-level parking structures and warehouses, the protocol should be based upon transmission frequency bands well suited for command, control and data retrieval applications over considerable distances and in the presence of obstacles such as masonry walls and metal obstructions such as rebar and plumbing.
Xeleum’s Xi-Fi Wireless Lighting Control System, based upon the ISM UHF frequency band, is an example of such a protocol. Intelligence is built directly into each Xeleum fixture and the fixtures communicate with other fixtures in their vicinity via “mesh/flood” technology to create an industrial strength network with greater reliability properties than systems dependent upon two-way direct communication between individual nodes and Wi-Fi gateways.
As part of a larger building management platform, the Xeleum Xi-Fi control system can be used to gather a great deal of valuable real-time data from IoT sensors strategically positioned throughout a structure. A variety of sensor types are available and may be stand-alone or, for mounting and power purposes, imbedded into the light fixtures. Examples of sensor types include those for ambient light level, temperature, humidity, motion, air quality and acoustic event detection analytics.
Through use of this data, the safety, security and comfort of occupants can be enhanced, productivity increased and corporate workspace more efficiently utilized. This data can also be wirelessly delivered to a terminal such as a gateway where it can then be sent to the cloud and accessed by a remote terminal.
See the full magazine in the link below:
Xeleum is a U.S. based market leader in industrial and commercial high-quality LED Lighting and Control products. Its engineering team is dedicated to the development of new, leading edge products and intelligent devices that provide the maximum possible energy savings along with superior illumination.
Xeleum is committed to maintaining its leadership role in the evolution of solid state lighting and to leveraging the latest technology in sensors, the Internet of Things (IoT), environmental control, data mining and smart building systems.