Intelligent control of Dynamic LED Lighting
The goal was to create an intelligent and advanced control of LED lighting which is able to optimize the user's lighting conditions in a given situation or in relation to a task. Apart from a number of known parameters of both personal and demographic character, the system can adjust the lighting at any given time creating ideal lighting conditions and at the same time using minimal electrical energy.
LIGHTEN wants, in collaboration with DTU Photonics (at Risø) and Danish Building Research Institute, to develop an advanced and intelligent controller that can regulate a lighting unit based on LED from a number of demographic and human parameters. The device is a modular LED-based controller, which can be combined geometrically to support different light units, such as general lighting, spot lighting, task lighting, etc.
In this project the goal is to fully develop, demonstrate and test a device to work lighting (a table lamp) in office environments. It is our goal, through preliminary laboratory tests and modifications, to ensure a solution that meets the requirement of both high energy efficiency as the ability to offer intelligent and individually controlled lighting and high quality.
It is assumed that an intelligent controller could help to reduce energy consumption in general lighting in the workplace by up to 88% compared to existing solutions (a task light with 60 W incandescent bulb or equivalent energy-saving bulb).
To obtain sufficient basis for assessment of market maturation phase, we want to test up to 50 units over approximately 6-10 months.
The project is expected to contribute to vital knowledge about light's effect on individual performance and job satisfaction plus corporate performance, output quality and results. The results will provide a fundamental and evidence-based knowledge that will lead to marketable solutions and help to put Denmark on the map in relation to the latest research in the area "Energy Effecient and Healthy Lighting", which is an area with great attention from world leaders architects and producers of solutions for light.
The aim was to create an intelligent and advanced controlling of LED lightning which can optimize the users need of light in a given situation or in relation to an assignment. Based on known parameters the system should be able to regulate the lightning so that it, at any given time, gives the optimal lightning with a minimal use of electrical energy.
There has been developed an intelligent lightning system in shape of a desk lamp which, inter alia, makes it possible to have a dynamic change in the color scheme. The system includes a LED unit for the generation of high quality dynamic light, driver electronic, sensor, lamp design and a controlling system with a user interface and light control – algorithm. Measurements show that the system is able to give light with the same spectral in attenuation from 100% to 10% at different color temperatures in the interval of 2700-7000 K.
The built in intelligence in the system should enable the user to get an optimized generation of light compared to personal preferences and individual needs.
The light can be installed depending on the task and also in relation to the user’s individual biological day rhythm, age and gender. Furthermore the system has a sensor which measures and compensates for the surrounding light (daylight and other light unites), furthermore it detects if the user is nearby (movement sensor shall shift the light on and off depending on the users presence). The sensors shall ensure the optimum energy efficiency.
None of the existing commercialized solutions can offer the user the same qualities as the LIGHTEN´s prototype.
There has been made an end user test of the system through installation of 8 lamps for the employees at Lolland’s municipality health center in Maribo, whom primarily handles ordinary office tasks. In connection to the test the users has answered a number of questions about their everyday office environment and furthermore their use and understanding of the lamp. The test continued for about 4 weeks. The small number of test persons and the short test period makes factors that are worth taking in reservation looking at the test results.
The key conclusion is that the developed prototype is not ready for market introduction yet, because the results of the test shows that there is still a need to improve the energy efficiency such as usability and the design
Key figures
Category
Dokumenter
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| LIGHTEN | 0,61 mio. DKK | 1,44 mio. DKK |
| Danmarks Tekniske Universitet (DTU) | 1,09 mio. DKK | 0,50 mio. DKK |
| Aalborg Universitet (Fredrik Bajers Vej) | 0,17 mio. DKK | 0,04 mio. DKK |
| Lolland kommune | 0,07 mio. DKK |
