Exploring the role of autonomous system behavior in lighting control

Modern distributed lighting systems require advanced control systems because of the large amount of light sources and manipulable parameters. In this position paper we explore the unknown dimensions that can be used to describe control from full-user to full-system control. We believe a hybrid between the two will be most desirable. Combined with explicit user interaction, autonomous system behavior will create intelligent systems, able to adapt to users and contexts. This provides interesting opportunities for improved user experience as well as functional added value, for instance in energy saving or easy commissioning of light infrastructure. Based on different types of interactions, different levels of interaction-initiative and different interaction layers, a useful mapping of such hybrid control can be made. In our lighting living labs, we have implemented different controls in order to evaluate them on the basis of user experience

Exploring the effects of contextual factors on home lighting experience

Background Although lighting increasingly penetrates our everyday life due to technology advancement, little is known about how people interact with lighting and how contextual factors impact on the experience. Thus, this study attempted to reveal how two contextual factors (the level of concentration required for pleasant lighting use and social interaction) could influence the manipulation of lighting parameters, particularly focusing on the major factors of lighting such as illuminance, color temperature, and hue. Methods To understand of the interaction between contextual factors and lighting variables, an experiment was conducted. 10 singles and 10 couples had to manipulate lighting variables such as intensity and colorin five everyday situations for pleasant lighting experience. Results The result of the experiment showed that illuminance, color temperature and hue are influenced by the degree of concentration, but only partially influenced by social factors. The findings could provide a better understanding of manipulating lighting variables in terms of use context with design practitioners. Conclusions The overall findings of the study indicate that illuminance, color temperature, and hue are significantly dependent upon the level of concentration required in at-home lighting use, and also have only a partial dependence on social effect. This implies that although we assumed that people have their personal lighting preferences, their preferences can be largely dependent on the degree of concentration required for at-home pleasant lighting use. Hence, there are common patterns among people in manipulating lighting parameters, which are less dependent on personal differences. © Archives of Design Researc

A Multidimensional Continuous Contextual Lighting Control System Using Google Glass

An increasing number of internet-connected LED lighting fixtures and bulbs have recently become available. This development, in combination with emerging hardware and software solutions for activity recognition, establish an infrastructure for context-aware lighting. Automated lighting control could potentially provide a better user experience, increased comfort, higher productivity, and energy savings compared to static uniform illumination. The first question that comes to mind when thinking about context-aware lighting is how to determine the relevant activities and contexts. Do we need different lighting for reading a magazine and reading a book, or maybe just different lighting for reading versus talking on the phone? How do we identify the relevant situations, and what are the preferred lighting settings? In this paper we present three steps we took to answer these questions and demonstrate them via an adaptive five-channel solid-state lighting system with continuous contextual control. We implemented a multidimensional user interface for manual control as well as an autonomous solution using wearable sensors. We enable a simple set of sensors to manipulate complicated lighting scenarios by indirectly simplifying and reducing the complexity of the sensor-lighting control space using human-derived criteria. In a preliminary user study, we estimated significant energy savings of up to 52% and showed multiple future research directions, including behavioral feedback

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Department of DesignAlthough archiving daily moods in a diary is a common behavior, reflection is difficult because of the pressure brought about by continuous self-tracking of personal moods. In this paper, I developed Lumino, a standalone device that enables users to log their daily moods with colored lights and switch mode to show the log by physically sliding a circular lighting plate. The results of three-week in-field study with six participants revealed that Lumino helped users encounter emotional archives as it separated reflective experiences from daily life activities. Moreover, Lumino helped prevent deep reflection on negative emotions and maintained privacy through abstract color expression. I also found user???s various trials to control emotion reflections in their own usage patterns. I propose considerations for augmenting daily mood recording experiences combined with existing diary practices and further implications for designing how to support positively the negative reflections in everyday spaces.ope

Design of a Multimodal Mixed Reality Work Environment with Wearable Technology

Issues relating to health and well-being at work have risen in prominence, exerting negative effects upon both individuals and organizations. Two main contributing factors are a lack of awareness of one's bodily status and a lack of accessible and effective adjustment mechanisms. Through a comprehensive literature review in the fields of Physiology and Biosensors, Mixed Reality, and Environmental Psychology, this study examines the impacts of environmental attributes and investigates how technology can be leveraged to provide solutions for coping with changes in bodily status caused by internal or external stressors. To address the problem, this study proposes and develops a hybrid wearable and Mixed Reality system prototype that enhances awareness of bodily status and provides mediation. This prototype can adapt to the individual's real-time biometric data through a wearable glove, and provide personalized feedback in a Multimodal Mixed Reality working environment. A small-scale user testing was conducted and has yielded positive feedback. Ultimately, this study highlights that the implementation of a wearable and Mixed Reality system has the potential to contribute to a healthier and more productive workplace for individuals and organizations alike

A design approach to socially adaptive lighting environments

Historically light has been a catalyst for social life to emerge. In recent years of lighting research the social effect of light has been underexposed. The environments we occupy on a daily basis are used for a wider variety of activities. Consequently, lighting conditions need to become sensitive to adapt to the variety of activities being performed. We argue that the effect of light on the social relations between people needs to be considered in order to make adaptive lighting environments viable. To design a socially adaptive lighting environment an approach needs to be used that is iterative, experiential and involves multiple users in an actual context. The design process is described in three stages (Interactive Sketching, a Design Experiment and Socially Situated Adaptive Experience); for each stage the aims, the setup, results and lessons learned are provided. In this process an experimental environment is used, named Incubation environment, which is set up as a dining environment and equipped with computer controllable lighting armatures. In the final design stage the Socially Situated Adaptive Experience technique is described and is found a suitable technique to design socially adaptive lighting environments