Abstract
As part of ongoing research into saving lighting energy, studies on lighting control integrating location-awareness technologies have recently been increasing, but these have led to the indoor illuminance imbalance problem by controlling only the lighting adjacent to the occupant. Therefore, the purpose of this study is to develop a dimming lighting control system using general illumination and location-awareness technology by integrating general illumination and dimming technology with lighting control technology that is based on location-recognition, and to verify the effectiveness of this system. This study built a full-scale test bed to evaluate the performance of the developed technology, and derived the energy reduction rate and indoor light environment improvement rate to evaluate the performance of dimming lighting control (Case 1), dimming lighting control using location-awareness technology (Case 2), and dimming lighting control using general illumination and location-awareness technology (Case 3). The conclusions are as follows. (1) Case 3 reduces lighting energy by 47.9–64.2% as compared to Case 1, and Case 3 reduces lighting energy compared to Case 2 when there are three occupants. (2) Case 3 improves indoor light environment comfort by increasing the uniformity by 17.8–49% compared to Case 2. These results confirm the effectiveness of Case 3 proposed in this study.
Highlights
The continual increase in energy consumption has been recognized as a serious problem, along with fossil fuel resource depletion and increasing carbon emissions
The dimming lighting control using general lighting and occupant location-awareness technology in this study monitors the occupant’s location information and it applies general lighting in order to solve the illuminance imbalance that is caused by the local lighting method that controls only the lighting adjacent to the occupant, thereby saving lighting energy and improving the overall light environment
This study developed a dimming lighting control system using general lighting and occupant location-awareness technology (Case 3)
Summary
The continual increase in energy consumption has been recognized as a serious problem, along with fossil fuel resource depletion and increasing carbon emissions. Research and technology development related to energy reduction are underway in various sectors, such as buildings, transport, and industry to solve this problem [1,2,3]. The lighting energy consumption of the building sector accounts for. Various studies are being performed to reduce the lighting energy consumption in the building sector. These studies are focused on improving the efficiency of lighting equipment [6,7,8,9], improving the application of lighting equipment [10,11,12,13], and improving lighting control through environmental information collection sensors [14,15,16], which contribute to Energies 2018, 11, 2999; doi:10.3390/en11112999 www.mdpi.com/journal/energies
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