Lightfair International 2011 Field Report

(Electrical Construction & Maintenance Via Acquire Media NewsEdge) By Joe Knisley, Senior Editorial Consultant Held at the Philadelphia Convention Center May 15-19 and sponsored by the Illuminating Engineering Society of North America (IESNA) and the International Association of Lighting Designers (IALD), Lightfair International 2011 drew approximately 22,000 attendees and exhibitors who reviewed an array of light sources, materials, and electronics that feed product innovation. Solid-state light sources are separated into two categories: LED replacement lamps that fit into existing incandescent screw and pin sockets, which formed a $1 billion market in 2010, and LED luminaires, which was a $3.98 billion market in 2010. Both categories generally have advantages over legacy lighting products in terms of energy efficiency, longevity, directional light output, variety, versatility, durability, and compact size. New look luminairesGE showed innovative optical design in a line of flat-panel, edge-lit LED fixtures, available as recessed ceiling troffers and suspended fixtures that distribute light evenly over the flat surface of the acrylic-like transparent panel using True Edge technology from Rambus, Inc. The LED light source bars-to-light guide coupling achieves up to 95% efficiency, and the light output can be delivered across the entire surface of the panel, or it can be focused in specific patterns across the panel. The Juno Lighting Group Acculite Alari LED roadway and area luminaries feature field-rotatable optics and are available with 0V to 10V dimming or DALI control. The Finia Series serves medium mounting heights and flood lighting applications. The Acculux line of 3¼-in. round- and square-aperature LED downlights includes features that speed installation for contractors. Philips’ Jump direct linear luminaire, for either LED or fluorescent light sources, features optics having holographic nanotechnology to provide precise batwing distribution. The fixture, which is available in a variety of patterns, colors, and mounting options, also integrates daylight harvesting sensors and Airwave wireless, battery-free solar and kinetically powered control to reduce energy consumption. BetaLED showed its LEDway SLM and SLM IP-66 streetlights, which provide protection from ingress contamination. Both pole-mounted units can replace 70W to 250W HPS fixtures.

Wireless DALI: A Solution for Controlling Lights When Wires Can't ...

Currently, the Digital Addressable Lighting Interface standard (DALI) requires a wired connection between lights, switches, and a control panel. This allows enhanced control of lighting appliances including dimming, with connections next to but separated from electrical wiring. However, it adds extra wiring that must be installed, a problem for places such as older churches and historic buildings where it is an engineering challenge to install additional wiring or may have governmental limitations on what can be done. Our wireless DALI device solves this problem. It allows the use of a DALI system without additional wiring, using 434 or 868 MHz bandwidths to send data between a control unit and DALI devices. There can also be several separated DALI networks in one area with low risk of interference to easily manipulate lighting conditions in a building. The device requires a power supply of 12-24 VDC, which also powers the DALI bus. For instance, many churches and historic buildings, especially in Europe, were built centuries before electric lighting. These buildings are difficult and expensive to modify to add lights and the extra wires that a wired DALI system requires. In many cases, historic preservation laws require government approval of any major changes to the building, a legal hurdle that makes it more expensive and take longer to install a wired DALI network, if not outright impossible to do so. Wireless DALI solves that problem by making a DALI network easier to install without additional wires. This is also useful for exhibitions or events in which a temporary light system is needed. It may not be feasible or desirable to rewire an entire building to support an evening event or even a short-term exhibit. A wireless DALI system would remove that problem and make it easier and less expensive to add advanced control of the lights. These are just some of the use cases we envision for wireless DALI lighting. This system is, however, an early prototype. We are still working on how such a networked system might be used. How would you use such a solution? What sorts of situations would benefit from a wireless DALI system and what sort of criteria would you look for in deciding whether to use it? We want to hear from you in guiding us in the right direction to make this device effective.

Lighting control-technology and applications

In Europe the European Load interface Control interface/ gateway Separate power ... If it is a load interface, it may have two sets of DALI terminals, ...

Intelligent Buildings and Building Automation

A control interface provides the flexibility and ability of a DALI system to use non-DALI lighting components or integrate with other building automation ...

Advanced lighting controls, energy savings, productivity, technology and applications

Lightfair 2003, the company unveiled a line of fixtures that uses the Digital Addressable Lighting Interface (DALI) protocol, called iGEN. ...

Practical Lighting Design with LEDs

“DALI is a digital addressable lighting interface designed to replace and enhance the traditional 0–10 V analog dimmer. It is an open-lighting control ...

Consulting-specifying engineer

In "DALI: Forerunner of Today's Breakthrough Lighting Technology," the ... by digital addressable lighting interface control systems, but DALI is just the ...