Li-Fi LED Lights For Wireless Spy Networks?
March 21, 2013 in Technology
GLASGOW, Scotland, Jan. 28, 2013 — Imagine simultaneously powering your laptop, displaying information and delivering Wi-Fi-like communications, all with the same LED technology used to illuminate your home. This radical, distinctive vision could soon be a reality with micron-size LEDs being developed by a consortium of UK universities. Over the next four years, the group, led by the University of Strathclyde, will develop the technology to help unleash the full potential of “Li-Fi” — the transmission of Internet communications using visible light instead of the current radio and microwave signals — via the flickering of micron-size LEDs. The Li-Fi term was coined by project partner professor Harald Haas of the University of Edinburgh during a TED (Technology, Entertainment, Design) talk in July 2011.
LEDs flicker on and off imperceptibly thousands of times a second. By altering the length of the flickers, digital information can be sent to specially adapted PCs and other electronic devices — making Li-Fi the digital equivalent of Morse code. This would make the visible part of the electromagnetic spectrum available for Internet communications, easing pressure on the increasingly crowded parts now used. In the long-term, larger LED lights such as this one could be replaced by arrays of micron-size LEDs, enabling tasks such as powering a laptop, providing illumination and displaying information to be carried out simultaneously. Courtesy of the EPSRC Press Office.
The LEDs are made from gallium nitride and can flicker on and off 1000 times quicker and transmit data faster than conventional white LEDs. Their tiny size also means that 1000 can fit into the same space as a single conventional bulb, enabling bandwidth to be increased by a total factor of 1 million over a similar area.Besides providing an alternative to wireless Internet access, visible light communication also could be used to transmit data to electronic devices. For example, mobile phones equipped with a flash could be pointed at items affixed with electronic price tags in a store exhibit and display the price and all other information of each item on the phone.
“Imagine an LED array beside a motorway helping to light the road, displaying the latest traffic updates and transmitting Internet information wirelessly to passengers’ laptops, netbooks and smartphones,” said lead researcher Martin Dawson, a professor at the University of Strathclyde. “This is the kind of extraordinary, energy-saving parallelism that we believe our pioneering technology could deliver. This is the technology that could start to touch every aspect of human life within a decade. Other members of the consortium include Cambridge and Oxford universities and the University of St. Andrews. The research is funded by the Engineering and Physical Sciences Research Council.
“Professor Haas’ current research focuses on three main areas (a) optical wireless communications, (b) spatial modulation, and (c) interference coordination in wireless networks.”
Upcoming Events in 2013.
How Optoelectronic/LED Light Principles work.
Also, Quantum Dots/nanocrystals have the same properties as OLED.
Li-Fi LED lights for construction, city streets, multimodal traffic, indoor/outdoor infrastructure, and ect.
“Li-Fi is no longer a concept or an idea but a proven technology, albeit still at its infancy. Already, several experts in the field of communication have attested that Li-Fi technology would soon become a standard adjunct to Wi-Fi. That is, until its inherent limitations could be overcome.
Since it is light-based, its major drawback is that it won’t be able to penetrate solid objects such as walls. Though it could also mean privacy for the personal user, it also questions its use for large-scale delivery of data transmissions.
But despite its drawbacks researchers all over the world have been going all-out in further developing this new technology. A research was initiated by a consortium of universities that includes the Universities of Cambridge, Oxford, St. Andrews and Strathclyde in Scotland. It is led by Professors Martin Dawson, from the Institute of Photonics, and Harald Haas, from the University of Edinburgh.”
Healthcare Biophotonic LED Lights, businesses, and applications.
DHS’s LED Smart Signal Network with Intelight Inc.?
“Intelight sells the only LED-Electronically Steerable Beam programmable visibility signal head available today. The signal can house a 4-way embedded video camera for stop-bar detection and surveillance, and can house sensors for Homeland Security monitoring. Intelight Inc. manufactures and supplies innovative traffic management products including advanced traffic controllers, traffic control cabinets, smart signals, arterial systems masters, NTCIP compliant local software, and web-based central software systems. Our company’s mission is to provide our customers with the highest quality and most innovative “state-of-the-art” technology along with exceptional service and cost-effectiveness.”