Smart-lighting emergency ballast for fluorescent lamps

- Jul 24, 2017 -

The function of a traditional emergency lighting system is the supply of a minimum illuminating level when a line voltage failure appears. Therefore, they have to store energy in a battery module to supply the lamps in that case of failure. In this kind of lighting systems the internal damages for example battery overcharging, damaged lamps and starting circuit failure must be detected and repaired by specialist workers.

For this reason, the smart lighting prototype can check its functional state every fourteen days and dump the result into a LED display. With these features they can test themselves checking their functional state and displaying their internal damages. Also the maintenance cost can be decreased.

Overview

The main idea is the substitution of the simple line voltage sensing block that appears in the traditional systems by a more complex one based on a microcontroller. This new circuit will assume the functions of line voltage sensing and inverter activation, by one side, and the supervision of all the system: lamp and battery state, battery charging, external communications, correct operation of the power stage, etc., by the other side.

The system has a great flexibility, for instance, it would be possible the communication of several devices with a master computer, which would know the state of each device all the time.

A new emergency lighting system based on an intelligent module has been developed. The micro-controller as a control and supervision device guarantees increase in the installation security and a maintenance cost saving.

Another important advantage is the cost saving for mass production specially whether a microcontroller with the program in ROM memory is used.

Smart lighting ecosystem

Smart lighting systems can be controlled using the internet to adjust lighting brightness and schedules.One technology involves a smart lighting network that assigns IP addresses to light bulbs.

Information transmitting with smart light

Schubert predicts that revolutionary lighting systems will provide an entirely new means of sensing and broadcasting information. By blinking far too rapidly for any human to notice, the light will pick up data from sensors and carry it from room to room, reporting such information as the location of every person within a high-security building. A major focus of the Future Chips Constellation is smart lighting, a revolutionary new field in photonics based on efficient light sources that are fully tunable in terms of such factors as spectral content, emission pattern, polarization, color temperature, and intensity. Schubert, who leads the group, says smart lighting will not only offer better, more efficient illumination; it will provide “totally new functionalities.”

Advances in photonics

The advances achieved in photonics are already transforming society just as electronics revolutionized the world in recent decades and it will continue to contribute more in the future. From the statistics, North America’s optoelectronics market grew to more than $20 billion in 2003. The LED (light-emitting diode) market is expected to reach $5 billion in 2007, and the solid-state lighting market is predicted to be $50 billion in 15–20 years, as stated by E. Fred Schubert, Wellfleet Senior Distinguished Professor of the Future Chips Constellation at Rensselaer.


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