ELCN

Overview

The ELCN (Embedded Luminaire/Lighting Control Network) is the physical layer for transmitting light level data to embedded dimmers.

ELCN Transmitter

The transmitter injects a 1MHz carrier into the AC line at each zero crossing when its transmitting. It is connected to the line by a high pass filter.

ELCN Receiver

The receiver has a high pass filter to remove the 60 Hz signal and a diode-capacitor detector to demodulate the data.

Mechanical

The ELCN module will fit between the light bulb and the bottom of the socket.

Preliminary Results

• 1 MHz square wave, 8 Vpp input to AC line though 2.2nF coupling cap with 10 K to ground
• Transmitted from Diddy's room to Emily's room. 250 mV signal, 250 mV noise