Direct Illuminance-Contribution-Based Lighting Control for IoT-Based Lighting Systems in Smart Buildings

• Published in: Sustainability 2024-06, Vol.16 (12), p.5054
• Main Authors: Kim, Dae Ho, Jeon, Seung Hyun, Sung, Jung-Sik
• Format: Article
• Language: English
• Subjects: Algorithms; Approximation; Architecture and energy conservation; Artificial intelligence; Buildings; Commercial real estate; Control algorithms; Control systems; Energy conservation; Energy consumption; Environmental engineering; HVAC; Internet of Things; Light emitting diodes; Lighting; Sensors; Simulation; User satisfaction; Ventilation; Wi-Fi; Wireless communications
• ISSN: 2071-1050; 2071-1050
• DOI: 10.3390/su16125054

With the advent of low-voltage light-emitting diodes (LEDs) and advances in Internet of Things (IoT) technologies, smart buildings have recently become more energy efficient. Nevertheless, the lighting-control system is one of the major sources of electrical energy consumption in commercial buildings. This study proposes a direct illuminance-contribution-based lighting-control framework to reduce the energy of LED luminaires and ensure illuminance for user requirements in smart buildings. Specifically, we designed a direct illuminance-contribution-based lighting-control algorithm (DIC-LCA) using luminaires that are ideally axisymmetric with all light emitted below the horizontal plane and developed a WiFi lighting controller for the IoT-based lighting-control systems in smart buildings. The DIC-LCA can adjust the dimming level by calculating the illuminance based on the line of sight (LOS) distance for energy saving and user satisfaction. After simulation analysis, we prove that energy savings can be achieved by controlling the dimming levels of LED luminaires with high light contribution.