Smart DC ceiling

A test facility where DC devices mount straight into ceiling tiles and draw power from ceiling rails. No conventional wiring, no fixed switches, and a direct path for solar DC power.

Switches
Bluetooth Low Energy, wireless
Location sensing
Trilateration and machine learning
Goal
Efficiency and easier renewable integration
Test room with a DC ceiling grid, power track, smart tile and wireless switch

Most of the devices in a modern building, such as LED lights, sensors, fans and electronics, run on DC internally, while solar panels and batteries produce DC. Yet buildings are wired for AC, so power is converted back and forth, losing energy each time.

How it works

Devices are mounted on ceiling tiles and powered by rails in the ceiling grid. Because there is no fixed wiring, a light or device can be moved to wherever it is needed. Bluetooth Low Energy switches control the equipment, and we estimate each switch's location accurately using trilateration and machine learning, so a switch can control whatever is nearest to it.

DC ceiling grid with labels for the DC grid, smart tile, power track and wireless switch
DC ceiling grid setup: a DC LED powered by ceiling rails

The research aims to improve energy efficiency and make it simpler to run buildings directly on renewable power.