Interacting with the Internet of Lighting

My PhD focusses on interaction with office lighting systems as part of the Internet of Things. By applying a research-through-design approach, I design and evaluate interfaces for personal lighting control, taking into account stakeholders involved with office lighting. A value chain impact analysis provided insights in implications on design, installation, management and use of office lighting. I have constructed a living lab where several studies regarding lighting control are conducted. At this moment, I am setting up a study in a real-world office to validate expected stakeholder impact and for evaluations of new lighting interfaces

The impact of the internet of lighting on the office lighting value network

\u3cp\u3eLighting systems in offices are becoming an infrastructure to connect people, devices, and systems to each other and to the Internet, creating an Internet of Lighting (IoL). This can bring advantages to stakeholders involved, and is expected to have a disruptive impact on the value chain. This study investigates the impact of IoL on the European office lighting value chain. A qualitative stakeholder study indicates four perspectives with corresponding drivers of change: IP to the end node, standardisation, sharing data, and light as a service. Potential impacts on value have been formulated for each driver, and are operationalised towards stakeholders using the layered value network model. The validity of the model is shown by populating it with the European office lighting value chain. The work concludes with insights in the impact of IoL on stakeholders, and recommendations about the user of the model for synthesis of new stakeholder networks.\u3c/p\u3

Evaluating interface characteristics for shared lighting systems in the office environment

IoT developments make shared systems, such as lighting systems, increasingly connected. From an interaction perspective, this offers opportunities for personal control. Especially for lighting, the benefits of personal control have been underlined by research. However, how to design interfaces that realise these potential benefits is much less investigated. This paper presents a long-term qualitative study in which three interfaces for a shared lighting system are evaluated by 17 people working in an open plan office. The interfaces are designed to vary on a number of characteristics, including the distribution over space, interaction modality, and sequence of interaction. Based on the results, we provide new insights in the impact of interface characteristics on lighting use and experience. We find, i.a., that having an interface on a personal multi-purpose device or on a central interface solely dedicated to lighting, influences whether people make individual or more collective lighting adjustments and decisions

Designing multi-user lighting interfaces:four strategies to implement social translucence

In this work, we investigate how to design multi-user interfaces for shared environments by implementing social translucence: Visibility of socially relevant\u3cbr/\u3einformation, awareness of other people, and accountability for actions. By designing and analysing 126 multi-user lighting interface concepts, we define four strategies to implement socially relevant information into a user interface. The strategies are:\u3cbr/\u3e(1) to direct attention towards the context, (2) to present information about previous interactions, (3) to make information about needs and wishes explicit, and (4) to facilitate pre-evaluation of a light setting and its impact

Design considerations for interactive office lighting interface characteristics, shared and hybrid control

\u3cp\u3eThe inclusion of IoT in office lighting allows people to have personal lighting control at their workplace. To design lighting control interfaces that fit people’s everyday living, we need a better understanding of how people experience lighting interaction in the real world. Still, lighting control is often explored in controlled settings. This work presents a qualitative field study concerning the user experience of two control interfaces for a state-of-the-art lighting system of 400+ luminaires in a real-life office. In ten weeks, 43 people interacted 3937 times. The findings illustrate the effects of using a smartphone for lighting control, how people experience lighting control in shared situations, and issues with automatic system behavior. We define design considerations for interface characteristics, shared control, and hybrid control. The work contributes to making the potential benefits of interactive office lighting a reality.\u3c/p\u3