Can LEDs talk?
Behnaz Majlesein (LightBee), Damon Ye (TU Delft), Jagdeep Singh (Toshiba) and Ömer Dalgiç (SUPSI) participated in the Eurpean Researchers' Night 2022 Vienna with a Presentacion of our work in LiFi Technology. The event took place on the 30 September 2022.
Almost all light sources in our environment are based on LEDs. They are widely used for lighting homes, offices, street lamps and submarines, to name just a few examples.
However, LEDs also have great potential for providing information through illumination. LEDs can be switched on and off quickly, at a speed that the human eye cannot perceive, but everyday devices, e.g. smartphones/tablets with ambient light sensors or cameras, laptops with cameras, can detect this change. To the human eye, LEDs appear to be fully on with no change in lighting quality. However, light sensors detect this small change and convert it into digital information. Using this property, LEDs send out information; on the other hand, users with light sensors can retrieve this information. This makes it possible to talk to the light.
In this show, we introduced talking to LEDs for various applications ranging from locating a device to controlling it in different environments.
The European Researchers’ Night is a Europe-wide public event, which displays the diversity of science and its impact on citizens’ daily lives in fun, inspiring ways. This year, the event took place in 25 countries on Friday 30 September 2022.
The European Researchers’ Night aims to:
- bring research and researchers closer to the public
- promote excellent research projects across Europe and beyond
- increase the interest of young people in science and research careers
- showcase the impact of researchers’ work on people’s daily lives
The European Researchers’ Night attracts each year more than 1 million visitors in Europe and beyond.