Smart indoor solid state lighting based on a novel illumination model and implementation (original) (raw)

Smart indoor lighting control: Power, illuminance, and colour quality

2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE), 2014

This paper investigates the correlation between color quality and energy efficiency of indoor lighting control. The color quality, in terms of visual performance and comfort, is quantified using three measurements: illuminance, Color Rendering Index, and Correlated Color Temperature. Several experiments have been conducted to evaluate the potential energy savings of using different portions of light spectrum to obtain the optimal color quality. In particular, Light-Emitting Diodes are used as the lighting sources of the experimental luminaire. Moreover, the above quantification method and experimental results have been incorporated into a previously developed simulation framework for Building Automation and Control Systems, and smart lighting is used to adjust the tradeoff between comfort and energy consumption based on the presence of occupants. The results can be used to evaluate the viability of advanced lighting automation.

Energy efficient control of polychromatic solid state lighting using a sensor network

Tenth International Conference on Solid State Lighting, 2010

Motivated by opportunities in smart lighting, energy efficiency, and ubiquitous sensing, we present the design of polychromatic solid-state lighting controlled using a sensor network. We developed both a spectrally tunable light source and an interactive lighting testbed to study the effects of systems that adjust in response to changing environmental lighting conditions and users' requirements of color and intensity. Using both linear and nonlinear optimization, the setpoints of overdetermined systems (greater than three wavelengths) and the energy consumption of the network are adjusted according to the room's lighting conditions (e.g., lux and color temperature of multiple fixtures). Using these techniques, it is possible to maximize luminous efficacy or the color rendering index for a given intensity and color temperature. We detail the system modeling, design, optical calibration, and control theory required to modulate the luminous output and minimize wasted energy.

Energy efficient control of polychromatic solid state lighting using a sensor network

Proceedings of SPIE, 2010

Motivated by opportunities in smart lighting, energy efficiency, and ubiquitous sensing, we present the design of polychromatic solid-state lighting controlled using a sensor network. We developed both a spectrally tunable light source and an interactive lighting testbed to study the effects of systems that adjust in response to changing environmental lighting conditions and users' requirements of color and intensity. Using both linear and nonlinear optimization, the setpoints of overdetermined systems (greater than three wavelengths) and the energy consumption of the network are adjusted according to the room's lighting conditions (e.g., lux and color temperature of multiple fixtures). Using these techniques, it is possible to maximize luminous efficacy or the color rendering index for a given intensity and color temperature. We detail the system modeling, design, optical calibration, and control theory required to modulate the luminous output and minimize wasted energy.

A study on saving energy in artificial lighting by making smart use of wireless sensor networks and actuators

IEEE Network, 2000

This article is focused on adapting lighting conditions to user lighting preferences. A theoretical analysis of lighting conditions is carried out, and a case study is shown by means of the setup of an experimental environment and an empirical analysis of lighting conditions. Finally, a methodology for saving energy, which adjusts luminance to user preferences, is presented, and a study of the consumption results is given.

A Smart Adaptive Lighting System for a Multifunctional Room

2019 12th International Conference on Developments in eSystems Engineering (DeSE), 2019

Young professionals and millennials who live alone or are living in small groups and seek practicality, trigger the trend of smaller, modular and micro houses and apartments which are faster and cheaper to build. Multifunctional or flexible room is one of the important parts of the home. This particular room needs well-designed lighting for comfort. It should give an adequate illuminance for every activity and even pattern of light. This paper presents the factors for developing the smart adaptive lighting system which can provide lighting comfort for the occupants. The simulation is being done in 5 scenarios in the LJMU BRE 2010 house model using DIALux Software with the dimmable type of LED independent luminaire. The proposed system structure uses a wireless sensor network (WSN) and big data processing as the main components. The design employs an Artificial Intelligence (AI) subsystem which has the capability to predict and adaptively regulate the illumination level based on the occupant needs or routine. The simulation shows that this system is able to give even lighting pattern for luminance values 200, 250, 300, 500, and 750 lux which are needed by the occupants. With the possibility of user-defined lighting values, this system can be developed to accommodate the needs of special groups of occupants such as the elder or disabled groups.

Intelligent Household LED Lighting System Considering Energy Efficiency and User Satisfaction

Saving energy has become one of the most important issues these days. The most waste of energy is caused by the inefficient use of the consumer electronics. Particularly, a light accounts for a great part of the total energy consumption. Various light control systems are introduced in current markets, because the installed lighting systems are outdated and energy-inefficient. However, due to architectural limitations, the existing light control systems cannot be successfully applied to home and office buildings. Therefore, this paper proposes an intelligent household LED lighting system considering energy efficiency and user satisfaction. The proposed system utilizes multi sensors and wireless communication technology in order to control an LED light according to the user's state and the surroundings. The proposed LED lighting system can autonomously adjust the minimum light intensity value to enhance both energy efficiency and user satisfaction. We designed and implemented the proposed system in the test bed and measured total power consumption to verify the performance. The proposed LED lighting system reduces total power consumption of the test bed up to 21.9% 1 .

Distributed Intelligent Lighting System by Performing New Model for Illuminance and Color Temperature in the Workplace

Intelligent Control and Automation

A new approach has been proposed to improve the performance of the intelligent lighting system by estimating personal illuminance and desired color temperature at the workplace. We are considering the problem of using the sensing devices manually for the intelligent lighting system. The lighting control system has not become useful without sensing devices to measure the provided illuminance and color temperature. In this paper, we have used the property of light for the color temperature to estimate the level of color temperature for each user at the workplace. The new method will give personal illuminance for each user at the workplace and decrease the power consumption of the environment as well. As a result, the proposed method of the intelligent lighting system has realized the target of illuminance and color temperature for each user at the workplace by adapting dimming levels using illuminance sensing information for each user. Thus, the energy of the workplace has reduced by using a distributed luminance to realize the target for each user.

A smart lighting system for industrial and domestic use

2013

The goal of this work is to develop a smart LED lighting system for industrial and domestic use, taking into account visual comfort and energy saving of interior lighting. The idea is to control the lighting level in an energy efficient way, keeping a desired light level where it is needed, while regulating it to a minimum where not required. In order to achieve this goal, a single control unit is needed for each lamp. In this way the system can individually control the desired light level, adapting the LED illumination according to the environment in which it is installed, by means of light sensors, motion sensors and a smart control system. Experimental results are provided to show the effectiveness of the proposed solution.

Intelligent Lighting System for Energy Saving using Wireless Sensor Network

International Journal of Recent Trends in Engineering and Research, 2018

This paper examines the use of Wireless Sensor Networks interfaced with light fittings to reduce energy usage in existing buildings. This creates a wire free system for existing buildings with the minimum disruption and cost. In the recent trends, the use of electronic load is increasing very fast and the gap between demand and supply are making the reliability and power quality a critical issue. The maximum waste of energy is caused by the inefficient use of the consumer electronics. A light energy accounts for a great part of the total energy consumption. As the installed lighting systems are outdated and energy-inefficient, there are various light control systems introduced in the market. But these existing light control systems cannot be successfully applied to home and office buildings because of the architecture limitations. Therefore this paper proposes an intelligent household incandescent lighting system considering energy efficiency and users satisfaction. The proposed system utilizes multi sensors and the wireless communication technology in order to control the light according to the user's state and the surroundings. This system can autonomously adjust the light intensity value to enhance both energy efficiency and user satisfaction.