Ge Lighting Solutions LLC

General Electric Company

Benoit Essiambre

Christian Poirier

Truong-Khoa Nguyen

Gang Yao

Nina Rose Scheidegger

Mohamed Cherif Ghanem

Michel Doss

Jessica Lynn Burk

John Chrisman

Provided is a system for reducing power consumption in digitally addressable lighting interfaces (DALI), the system including a processor having at least one pin, a transistor coupled to the processor and a resistive network coupled to the processor and the resistive network.

Method and system for lighting interface messaging with reduced power consumption

A timing circuit may be enabled when a static signal disables communication through a communications bus, the timing circuit producing a threshold level after being enabled for a predetermined time period, and a switch controlled by the timing circuit is configured to disconnect the static signal when the timing circuit produces the threshold level. A static signal may be used to enable a timing circuit upon the static signal disabling communication through a communications bus, and communication may be allowed through the communication bus by disconnecting the static signal using a switch controlled by the timing circuit, after the timing circuit has been enabled for a predetermined period of time.

Digital addressable lighting interface short protection circuit

Systems and methods for monitoring operating parameters of traffic lamps. A traffic lamp includes one or more memory modules and a controller. The controller receives data pertaining to one or more operating parameters of the traffic lamp and logs the one or more operating parameters to the one or more memory modules using the received data. The controller may log the one or more operating parameters to the one or more memory modules upon detection of a fault in the one or more operating parameters.

LED traffic signal fault logging system and method

A safety flashing detector that suitably detects unintentional flashing of the LED light engine in a traffic lamp is provided. The LED light engine may flash unintentionally when there are failures (hardware or software) inside a traffic lamp. In certain embodiments, unintentional flashing may be detected using a current sensor. If unintentional flashing is detected, the flashing detector may activate and shut down the LED light engine to remove the hazardous failure and eventually triggers the fuse blowout circuit. Hardware circuitry is suitably employed for both reliability and safety purposes, but software may also be employed.

Safety flashing detector for traffic lamps

A system and method for setting operating parameters of traffic lamps. A traffic lamp including a memory operates according to one or more operating parameters on the memory. A loading device external to the traffic lamp transfers one or more operating parameters to the traffic lamp, where the traffic lamp sets the operating parameters to the transferred operating parameters.

Traffic signal loading platform

According to one aspect of the present disclosure, systems and methods for monitoring one or more operating parameters of a traffic lamp and adjusting light output of one or more light sources thereof to correct for one or more degradation factors are provided. According to another aspect of the present disclosure, systems and methods for monitoring one or more operating parameters of a traffic lamp and generating an indication if end of life is detected with the traffic lamp, where end of life is determined based on the one or more operating parameters. According to another aspect of the present disclosure, systems and methods for monitoring one or more operating parameters of a traffic lamp and entering the traffic lamp into a self-protected mode if a fault is detected with the one or more operating parameters.

LED traffic signal compensation and protection methods

In accordance with one aspect of the present exemplary embodiment, an LED lamp is provided. In one embodiment, the LED lamp is made to be mounted in a traffic signal housing that includes other lamps, where the LED lamp can be red, yellow, green or another color and can represent a full ball aspect, an arrow aspect or another aspect. The LED lamp is adapted to be powered by an external power source and includes an input power circuit receiving an input voltage from the external power source. The input power circuit includes a power detection circuit that is adapted to determine a power state of the traffic LED lamp. The LED lamp further includes an LED load and a battery powered driving circuit. The battery power driving circuit drives the LED load if the power state of the LED lamp is in a power failure state.

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Lachine, Canada

Benoit Essiambre