Echelon Corporation

John G Waclawsky

Sohrab Modi

Glen Meyers Riley

Mark Keating

Jonathan Lloyd

Jwalant Dholakia

Systems, methods, and apparatuses for improved powerline communication (PLC) are described. In one embodiment, a system comprises power down hardware coupled to internal wiring of a premises to selectively power down a portion of the internal wiring on request, and at least one hardware device to transmit a request to the power down hardware to selectively power down a portion of the internal wiring on request and to transmit data using power line communication hardware of the at least one hardware device while the portion of the internal wiring is powered down.

Systems, methods, and apparatuses for powerline communication

A central management system polls a lighting node in a mesh lighting network, sending a command message for the node to measure a link quality indication (LQI) of the received command message. The node returns a status message, including in its payload the measured LQI. The management system computes from the node's status messages, a statistical characterization of the link quality of the node and compares it with a threshold quality value. If the comparison indicates sufficient degradation in link quality, the management system automatically transmits a disconnect command to the node. In response, the node disconnects and enters a discovery mode to find a better quality link to rejoin the network. In example embodiments, the lighting node may also report its illumination and operational status in the payload of the status message, along with the LQI, enabling the management system to determine whether illumination by the node is failing.

Self-healing lighting network

The combination of LED lighting and particulate detectors are enhanced by exploiting the light degradation/reflection/wavelengths detected, absorbed or frequency shift seen in lighting due to the presence of smoke, gas or other molecules (such as explosives) in the air can be detected. The use of LEDs is expanded well beyond simple lighting and energy savings to include not only smoke and fire detection by also to scan for gases and particulates found based in the usage environment.

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Alpine, WY, United States of America

John G Waclawsky