Master of Science / Department of Architectural Engineering and Construction Science / Fred L. Hasler / The Internet of Things (IoT) is rapidly growing and is starting to be incorporated into commercial buildings. One of the ways that the IoT is being used in buildings is connected lighting, also referred to as smart lighting. Connected lighting allows for communication between the lighting system, people, the environment, and other devices. This paper will focus on connected lighting and its effect on lighting controls and design. The IoT is expected to see substantial growth in the next few years and the growth of connected devices will have a huge impact on the lighting industry as connected lighting systems will be installed in more commercial buildings. The shift to solid state lighting (SSL) in recent years has brought the transition from conventional lighting controls to connected lighting controls. For this shift to be successful, issues with interoperability, security and reliability will need to be overcome. Connected lighting systems on the market are using both wired and wireless technologies. Power over Ethernet (PoE) and wireless technologies such as ZigBee and Bluetooth Smart are currently being incorporated into connected lighting systems. The introduction of these technologies is changing the way that lighting control systems are designed and installed. Products such as fixture-integrated sensors and wireless devices are also being used in connected lighting systems. These products, along with the wired and wireless technologies, are changing lighting control system configurations. Lighting design will also be affected by connected lighting systems. New features including color-tunability and indoor positioning will be used to enhance the lighting system and improve occupant health. Also, energy code compliance will be easier since connected lighting controls will be mostly software-based and can be reprogrammed. Connected lighting systems will be integrated into other building systems such as heating, ventilating, and air conditioning systems or security systems and will also be used in a variety of applications. Connected lighting systems will greatly affect both lighting controls and design of lighting control systems. This paper introduces connected lighting and is intended for those who are not familiar with its design, applications, and implementation.

This thesis addresses a multi-phase research and development project that spanned nearly four years, targeted at providing an ultra high-efficiency, user-friendly, and economic intelligent lighting solution for commercial facility applications, initially targeting underground parking specifically. The system would leverage the strengths of four key technologies: high brightness white Light Emitting Diodes (LEDs), wireless sensor and actuator networks, single board computers, and cloud computing. An introduction to these technologies and an overview of how they were combined to build an intelligent lighting solution is given, followed by an in-depth description of the design and implementation of one of the main subsystems – the Sensor Middleware System – residing on a single board computer. Newly-available LED luminaires (a.k.a. light fixtures) bring the combination of high efficiency, reliability, illumination quality, and long-lifetime to the lighting market. Emerging low-power – and recently low-cost – 802.15.4 wireless networks offer high controllability and responsiveness to deployed luminaires and sensors. The cost- associativity, low maintenance, and easy build-up of Internet Data Center “cloud” computing resources make data collection and remote management infrastructure for Building Automation Systems accessible to even small companies. Additionally, these resources can be much more appropriately sized and allocated, which reduces energy use. These technologies are combined to form an Intelligent Lighting System (ILS). Fitting well within the Internet of Things paradigm, this highly distributed messaging-based “system of systems” was designed to be reliable through loose coupling – spanning multiple network layers and messaging protocols. Its goal was to deliver significant energy savings over incumbent technologies, configurable and responsive lighting service behaviour, and improved experience for users within the facility (pedestrians and drivers) and those interacting with its web-based tools (building managers and ILS administrators). The ILS was partitioned into three main subsystems as follows. The installed Wireless Field Network (WFN) of luminaires and sensors provided coordinated scheduled and real-time output level adjustment (i.e. dimming), with the help of motion sensor triggers. The Monitoring and Configuration System (MCS) in the cloud provided remote data collection and a web-based monitoring and configuration Graphical User Interface application. Network hardware and Message-Oriented Middleware (MOM) were responsible for tying these subsystems together. The MOM layer that provided the message brokering, translating, envelope wrapping, and guaranteed delivery services between the WFN and MCS, as well as field supervisory and quality-of-service functions for the WFN, was called the Sensor Middleware System (SMS). It was hosted on a single board computer located at the facility. / Graduate

Abstract This thesis explores the design and experience of adaptive lighting. In this research, adaptive lighting is understood as a wide concept referring to lighting which adapts to information about the environment and its users or to other information relevant to intended lighting behaviour. Adaptive lighting is approached as an element of architecture and urban space, which has an influence on the human environmental experience at various levels. The research can be defined as architectural design-based research as well as transdisciplinary research. This research explores design practice by analysing the design processes of three case studies through the research-by-design method. The essential design phases, design tasks and design methods are recognized and presented. In addition, the experiences of adaptive lighting are explored with the help of empirical qualitative research material, which is gained through evaluation of the case studies. The methods used in evaluation include in situ walking interviews and evaluation probes. In the case projects situated in urban environments and in a retail space, different forms of lighting adaptation, interaction and participation were studied. The design process of adaptive lighting can be theorized, based on the three case studies, as a three-phase process consisting of several subtasks. The design process is guided by several design factors. In the design process, cooperation with experts of interaction and system design is beneficial. The users’ experience of adaptive lighting environments is complex and multifaceted. The experiences emerge in each environment as context-related interpretations or manifestations of the general experiential aspects. Finally, adaptive lighting is conceptualized in the thesis as a holistic design task by formulating a framework for pragmatic-experiential and context-oriented design of adaptive lighting. This defines adaptive lighting as a design task from the perspectives of multifaceted users’ experience and pragmatic constraints of design practice. Future design processes should acknowledge the complexity of the design task. Then adaptive lighting can offer, besides energy savings, added value for illuminated environments on many levels of experience. The main significance of this study is to help both designers and clients to understand the diversity of the new design task, and to help to approach it from human-oriented perspective—from the perspective of inhabitants of the environments. / Tiivistelmä Tämä väitöskirja tutkii mukautuvan valaistuksen suunnittelua ja kokemusta. Työssä mukautuva valaistus ymmärretään laajana käsitteenä viitaten valaistukseen, joka mukautuu ympäristöstä ja sen käyttäjistä saatavaan tietoon tai johonkin muuhun valaistuksen tavoitellun toiminnan kannalta merkitykselliseen tietoon. Mukautuvaa valaistusta lähestytään arkkitehtuurin ja kaupunkitilan elementtinä, joka vaikuttaa ihmisen kokemukseen ympäristöstään usealla eri tasolla. Tutkimus on luonteeltaan arkkitehtuurin suunnittelulähtöistä tutkimusta ja poikkitieteellistä tutkimusta. Se valottaa suunnittelun praktiikkaa analysoimalla research-by-design-menetelmällä kolmen tapaustutkimuksen suunnitteluprosesseja. Olennaiset suunnitteluvaiheet, -tehtävät ja -menetelmät tunnistetaan ja esitellään. Lisäksi kokemuksia mukautuvasta valaistuksesta tarkastellaan analysoimalla empiiristä, laadullista tutkimusaineistoa, joka on syntynyt tapaustutkimuksia evaluoimalla. Evaluointimenetelminä ovat olleet puolistrukturoitu haastattelu, paikanpäällä tehtävä kävelyhaastattelu ja evaluointiluotain. Tapaustutkimusprojekteissa, jotka sijoittuivat kaupunkiympäristöihin ja liiketiloihin, tutkittiin erilaisia valaistuksen mukautumisen sekä valon kanssa vuorovaikuttamisen ja osallistumisen muotoja. Mukautuvan valaistuksen suunnitteluprosessia voidaan kolmeen tapaustutkimukseen perustuen teoretisoida kolmivaiheisena prosessina, joka sisältää useita alatehtäviä. Suunnitteluprosessia ohjaavat useat suunnittelutekijät. Monialainen yhteistyö suunnitteluprosessin aikana on hyödyllistä. Käyttäjien kokemukset ympäristöistä, jotka on valaistu mukautuvasti, ovat monimutkaisia ja moniulotteisia. Kokemukset muodostuvat kussakin ympäristössä kontekstisidonnaisina tulkintoina ja ilmentyminä yleisistä kokemuksellisista piirteistä. Mukautuvaa valaistusta määritellään ja käsitteellistetään tässä väitöskirjassa holistisena ja kontekstisidonnaisena suunnittelutehtävänä käyttäjän moniulotteisen kokemuksen ja suunnittelupraktiikan käytäntöön liittyvien rajoitusten näkökulmista. Tulevaisuuden suunnitteluprosesseissa tulisi huomioida suunnittelutehtävän moniulotteisuus. Näin mukautuva valaistus voisi tarjota energiansäästöjen ohella valaistuihin ympäristöihin lisäarvoa useilla kokemuksen tasoilla. Tämän työn päämerkityksenä on auttaa sekä suunnittelijoita että suunnittelun tilaajia ymmärtämään uuden suunnittelutehtävän monipuolisuus ja auttaa heitä lähestymään sitä ympäristön käyttäjien näkökulmasta.

本論文は，知的照明システムの改良に関わるものであり，従来の課題であった色温度の実現精度の向上と高価な色温度センシング機材を無くす方法ならびにそれらの最適制御法，これまで不明であったシステムがもたらす省エネルギー性に関する詳細な解析方法を提案し，これらの提案手法の有効性を検証するため新たに改良した知的照明システムを用いて実験を行い，それらの手法の有効性を確認した． / An advanced intelligent lighting system has been proposed and introduced to provide a comfortable personal lighting environment for the workplace using the evaluation and biological information of workers. The research studies the appropriate perspectives of using the intelligent lighting system as a solution of the smart design in the office workspace. In the first part, the research paper has utilized the computerized system and the optimization method to generate the lighting automatically instead of using the sensing devices. The second part is related to energy consumption. The illuminance has been distributed based on the individual preference available of each user inside the office. / 博士(工学) / Doctor of Philosophy in Engineering / 同志社大学 / Doshisha University