Report of visit to Philips Lighting LAC and presentation of VLC Technology

The topic of the visit was the application of Visible Light Communication (VLC) with LED luminaires to enable location based services for office and retail. The visit started with demos in the Philips Lighting Application center (LAC). In the retail demo-area the influence of the spectral properties of the (LED) light were clearly demonstrated. The atmosphere and experience in the shop was determined to a large extend by the chosen lighting conditions. Adding VLC enabled luminaires allowed for determining the location of the shopper on his/her smartphone. This is the base for several interesting services to help the shopper and the retailer both.

Next the possibilities of choosing the lighting conditions and using the interaction with the luminaires was demonstrated in the office demo-area of the Philips LAC. The kind of illumination enhanced the working conditions in the office.  VLC for interaction allowed for personalized conditions for a specific individual desk location.

After the demonstration of the opportunities with VLC based location-aware services Philips presented some of the technological issues to be solved to make VLC in a reliable system. Both transmitter and receiver were discussed. The transmitter is the LED with a special driver which modulates the light in a smart way (with a DC-free code called Ternary Manchester). The receiver is the camera of the smartphone. Special ways of processing the pixels of the camera enable detection of the information of the luminaire.

In a next step that information is combined with the known position of the LED to calculate the location of the smartphone. The software in the driver to program the light intensity and the software in the smart phone to calculate the location are an important ingredient. The data are linked to data from shop and office in the cloud to realize the service.

Several interesting uses cases were presented.

For a further look in the nearby future innovation see Tomorrow's Retail Philips Systems

See also the video, mentioned in the following presentatation: "The Edge: grenzeloze ambitie om personeel ideale kantooromgeving te bieden"

The presentation of Visual Lighting Communication by Philips Lighting is available using the link below.

Programma

 -  uur Reception (coffee and cake)
 -  uur Demos in LAC, application of VLC in office and retail environment
 -  uur On Philips Visible Light Communication Technology, how to extract several kbit/s from a luminaire us
 -  uur Value add location-based services, current applications and outlook by Ir. Onno Janssen (project lea
 -  uur Q@A
 -  uur Networking with some drinks