by Rob | Feb 6, 2017 | Announcement, Lighting, RoadwayLighting, Traffic Signals
We are excited to announce that we have started work on the new North East False Creek Project! This project involves the removal of the Georgia Street Viaducts and the major works surrounding the site. Within the project limits, 5% of the City of Vancouver traffic signals will be impacted (42 plus or minus) and about 6 km of street lighting. The project also involves dynamic message signs, traffic management systems and communication duct design. We are looking forward to working with the City of Vancouver to help create a new and improved viaduct area. Stay tuned for updates on the progress of this...
by Rob | Dec 2, 2016 | Announcement, LED, Lighting
The completed bridge located in Trail, BC runs over the Columbia River. The bridge was designed by COWI features single-leg tower pole masts , a deck, cables, and lighting. The bridge is 305 metres (1000 feet) long; one of the longest pedestrian suspension bridges in North America. DMD undertook design of the electrical system which included LED walkway lighting and the design of full colour changing LED theatrical type lighting system with DMX control to highlite the structure and cables. The colour changing bridge lighting was designed using rendering software to provide the cleint with photomertically correct lighting effects in the actual existing night-time setting (see rendering below). The colour changing LED system was not installed as part of this work however is being considered for a later...
by Rob | Oct 24, 2016 | Announcement, Lighting, RoadwayLighting, Standards, Traffic Signals
DMD have completed and issued the City of Vancouver street lighting and traffic signal design and construction standards which will be published by the City in early 2017. The standards define specific design and construction requirements for street lighting and traffic signals in the City of Vancouver. DMD and City staff worked in collaboration to develop these very detailed...
by Don McLean | Aug 7, 2016 | IESNA, Lighting
Video produced by Illuminating Engineering Society of North America (IESNA) provides an interesting view on lighting from various standpoints: Electric Light: Dawn of a New Era...
by Don McLean | Feb 26, 2015 | LED, Lighting, Study
Though not a certified test lab, DMD have assembled test equipment to better evaluate LED luminaires. DMD have developed a sophisticated mounting system which will be used to view luminaires in their operating positions. This allows DMD to review, assess and evaluate the various optical systems and lighting technologies in their shop. Suppliers provide luminaires and DMD would review the optical system and its effects in a dark environment at various mounting heights. Other testing include spray tests via a power washer, along with a review of the luminaire driver electrical characteristics under various states of loading. Loading states include under voltage events, over voltage events and various levels of dimming. We use volt meters, ammeters, oscilloscope, power factor meter and light meters while we vary input voltages/light output and measure results. As LED’s are new this analysis and testing is key in defining and comparing LED performance and uncovering possible issues. We are also assessing voltage drop impacts on LED luminaires given the variable input voltage range. DMD also has an operational LED test road which consists of LED luminaires equipped with an adaptive lighting system on the roadway outside their office where lights can be dimmed to various states as well as monitored for faults. This allows for review of the effects of dimming on an actual roadway. The system can be reviewed and assessed by those interested in an adaptive system. LED and adaptive lighting systems represent a large investment. LED and adaptive technologies continue to advance and develop therefore DMD saw the need to step up their abilities to better assess, specify and select products...
