Case Studies

Demonstrations & project technology briefs.

Wireless Integrated Photosensor and Motion Sensor at UC Santa Barbara

08/01/2010

Adura Technologies in partnership with the California Lighting Technology Center (CLTC) developed a wireless integrated photosensor and motion sensor (WIPAM) system that uses wireless communications to circumvent the complicated wiring issue, thus increasing the pool of buildings that could cost effectively benefit from lighting controls. 

Adura WIPAM Parking Garage Case Study

01/01/2011

Adura’s Wireless Lighting Control System with flexible control and energy management features increased energy efficiency while providing powerful new management tools. The primary control strategies deployed in this parking garage are daylight harvesting and occupancy detection. 

Features & Benefits:
  • Energy Savings: Reduction of 40% average and >65% maximum savings
  • Payback: 24 months
  • Control Strategies: Daylight Harvesting Occupancy Detection

Bi-level Street and Parking Area Luminaires at Cal Poly San Luis Obispo

05/01/2010

PIER-sponsored research, development, and demonstration has focused on the combination of occupancy-based lighting controls and broad-spectrum light sources to create intelligent, bi-level luminaires designed for street and parking area applications. These products achieve 30 – 75% energy savings compared to traditional street and area luminaires, meet stringent energy-efficiency standards, and provide excellent light distribution for reduced night sky pollution. 

Adaptive LED Parking Garage Luminaires

04/01/2012

California's Public Interest Energy Research (PIER) program sponsored the development of adaptive parking garage luminaires that integrate intelligent controls with adaptive electronic drivers or ballasts to control light output based on garage occupancy. CLTC partnered with PIER on three demonstrations of the technology in parking garages at CSU Sacramento, CSU Long Beach and the San Marcos Civic Center Parking Garage. Luminaires operate at a reduced power during vacancy and switch to full output when occupants approach the area.

Curfew Dimming Parking and Area Luminaires at CSU Long Beach

06/01/2012

Many of the emerging light sources used for exterior lighting, namely light-emitting diode (LED) and advanced ceramic metal halide (CMH) lamps, provide full-range dimming. Occupancy sensors have provided adaptive lighting controls in exterior parking and area lighting applications, but some applications are not compatible with sensor coverage patterns. In these scenarios, combining dimmable sources with a controller that dims based on time of day can achieve comparable energy savings to utilizing occupancy sensors.

Integrated Classroom Lighting System at Laney College

06/01/2012

The Integrated Classroom Lighting System (ICLS) delivers flexible, high-quality, energy-efficient lighting that is easy to use and maintain. ICLS system retrofits can either utilize existing fixture housings, only replacing lamps and ballasts, or the existing fixtures can be entirely replaced with a one-to-one retrofit. ICLS fixture controls, with features such as scene control, dimming, daylight harvesting, and occupancy sensing, automatically maximize energy savings while giving teachers optimal control of their classroom lighting. 

Adaptive Corridors at Latham Square

06/01/2012

Energy savings can be achieved in corridors and other secondary spaces with an occupancy-based adaptive lighting system. The adaptive lighting system installed at the Latham Square office building is based on Lutron's Energi TriPak solution, a stand-alone platform for adaptive lighting that employs cost-effective wireless control devices and programmable dimming ballasts. 

Dual-Loop Photosensor Control System for Daylight Harvesting

Dual-Loop Photosensor Control System for Daylight Harvesting
03/01/2013

To maximize the respective benefits of open-loop and closed-loop systems, and minimize their limitations, the California Lighting Technology Center (CLTC) developed a dual-loop photosensor control system for skylight applications. The system features a control algorithm that monitors the open-loop and closed-loop photosensors and controls the electric light to provide the designed light level. It also automatically recalibrates nightly in order to adjust to longterm changes to the interior space.

Adaptive LED Wall Packs, UC Davis

03/15/2013

In 2012, UC Davis upgraded its exterior lighting as part of the university’s Smart Lighting Initiative. Wall packs on campus, like other exterior lighting fixtures, were retrofitted with dimmable LED sources, motion sensors, and wireless controls. This allowed the units to be incorporated into an adaptive campuswide lighting control system. The system offers an intelligent, networked approach to lighting and energy management, with improved lighting quality and optimal energy efficiency.

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