The Lighting Control Innovation Award was created in 2011 as part of the Illuminating Engineering Society’s Illumination Awards program, which recognizes professionalism, ingenuity and originality in lighting design. LCA is proud to sponsor the Lighting Control Innovation Award, which recognizes projects that exemplify the effective application of lighting controls in nonresidential spaces.
This month, we will explore the role that lighting controls play in controlling river lighting for nighttime watercraft, a project commissioned by the City of Oklahoma City. Lighting control design by William B. Gilbreath, Lighting Designer and Caleb Gutshall, Lighting Designer for Garver. Photography by Bart Gilbreath, PE, LEED AP and EI Garver. Lighting controls by Crestron Electronic, Inc.
The scope of the control system design was to control 12 poles with dozens of lights on each pole to create an environment usable for nighttime watercraft events on the river.
The wireless system utilizes input from an HMI touchscreen located with the master control system in the river’s Finish Line Tower or via an application for wireless PDA’s. This allows for race administrators to control the lighting during events or coaches to control the lights during practice while on the river.
The system uses an industry standard DMX512 protocol that is expandable for future lighting needs on the river. The HMI screen provides a maintenance view that allows the Owner to view runtime of each circuit, lamp life used, and last maintenance performed to assist with planning events and maintenance.
The wireless network is a self-healing mesh network communicating between the transmitting antenna and each service point using spread spectrum radios. At each service point contactors control on/off functionality of each pole’s two circuits.
The benefit of using the mesh self-healing network is if one service point loses communication with the transmitting antenna it can then receive its signal from another service point.
In order to maximize lamp life and minimize energy usage, the system was designed to allow various zonal controls and stepped dimming at each pole. Each pole utilizes 2 circuits integrated into the control architecture to provide the full (event) or half (practice) light level. The control system intelligently cycles between two circuits for the half level on each light pole to maximize the lamp life based on the system keeping track of burn hours of each circuit.
The master control system in the Finish Line Tower communicates via fiber optics to the transmitting antenna. This antenna sends out the wireless signal to each service point.