Dr. Dee Denteneer

Philips Lighting, Director of Standards & The Zhaga Consortium, Secretary General

Dr. Dee Denteneer

Philips Lighting, Director of Standards & The Zhaga Consortium, Secretary General


Dee Denteneer was elected as Secretary General of the Zhaga Consortium during the most recent gathering of the Zhaga General Assembly in Shanghai. Dee has held positions at the University of Utrecht, the Statistical Office of the Netherlands, and Philips Research. He has a PhD in mathematics, and a background in wireless connectivity, lighting, project and program management, and finance. Currently, he is Director of Standards at Philips Lighting, focussing on strategy and governance in industry alliances. Along side of his position in the Zhaga Consortium, Dee is a member of the executive team, treasurer and chair of the Finance Committee of the ZigBee Alliance; Technical Working Group Chair of the Fairhair Alliance; and non-executive member of the Board of the Philips Pension Fund.

The Fairhair Alliance Facilitating the Internet of Things for Commercial Buildings

The Fairhair Alliance is an alliance of leading companies from the Lighting, Building Automation and IT industry, which aims to facilitate the ‘Internet of Things’ for buildings. It contributes to the realization of this future by providing specifications of application services for building automation systems that are interworked by means of an IPv6 network infrastructure. The specifications build upon work coming out of the IETF, restricting existing RFCs as dictated by the requirements of the building automation industry, or driving new RFCs.
Completed, these specifications address all needed application services, ranging from security, discovery to network management. The aim is to contribute these specifications for adoption by major building automation ecosystems, such as BACnet, KNX and ZigBee. Next to the obvious efficiency advantage, this harmonized approach enables co-existence of devices out of different ecosystems on the network. Our work thus facilitates the realization of a common, wireless, infrastructure for building control, enables integration with IT, brings building domains closer to each other and breaks down existing barriers to more advanced building and lighting control.

The talk outlines motivating requirements and the basic Fairhair Architecture, and addresses the following services and concepts.

  • The Fairhair application framework. This framework sits on top of a generic UDP/IPv6 service that provides a medium-independent transport over wired or wireless physical interfaces. Although Fairhair does not prescribe any specific physical interface it is particularly designed to work with resource-constrained interfaces. To interface to the UDP/IPv6 stack, Fairhair uses services provided by the IETF CoAP protocol [RFC7252] for resource-constrained devices.
  • The Fairhair Application Service sublayer defines mechanisms for application services including network management, service discovery and security. These all operate on resources that are described according to a framework provided by the Fairhair resource model.
  • Service discovery is based on standard IETF CoAP discovery using Link Format (RFC 6690); adapted to meet requirements from the building automation and lighting industry. Fairhair supports a distributed discovery usually via multicast queries to the “/.well-known/core” resource of devices as well as unicast queries and registrations to a central resource directory (draft-ietf-core-resource-directory).
  • The security architecture is based on state-of-the-art IT technology, appropriating the technology for wireless mesh networks. It builds on public key cryptography (IEEE 802.1ar) supporting strong device identities; the protocol flow to bring devices automatically onto the network is based on ANIMA (draft-ietf-anima-bootstrapping-keyinfra). Application layer security is based on DTLS (RFC 6437) and adapts the well-known TLS. Additional extensions are developed to secure group communication, e.g. as in COSE (draft-ietf-cose-msg).

Early 2017, Fairhair has completed its first three draft specifications. These drafts address the Fairhair framework for Resource Modeling, as well as protocols for Resource Discovery, and Security. The talk thus introduces these specifications and constitutes an invitation to comment on the scope and direction of the Fairhair Alliance.

Zhaga Interface Specifications for Connected Lighting and a Circular Economy

Zhaga is an open, global, industry consortium that aims to simplify the design and manufacturing of LED luminaires to accelerate the adoption of smart LED lighting solutions. It achieves its aim by standardizing the interfaces of components of LED luminaires, including LED light engines, LED modules, LED arrays, holders, electronic control gear (LED drivers) and connectivity fit systems. Zhaga has a strong business rationale, as it helps to simplify the supply chain for both LED component and luminaire manufacturers. It can derisk the business by providing stable platforms and enabling second-supplier strategies. At the same time, it safeguards luminaire innovation and differentiation by not standardizing more than necessary.

However, the LED industry is evolving, as for example illustrated by the strategic roadmap 2025 of LightingEurope. On one hand, LED technology is maturing. On the other hand, the industry faces new challenges and needs to answer calls for smart and connected lighting, and for more-circular business models in which luminaires can be upgraded and serviced. Interface specifications will be key to meet these new industry challenges.
Firstly, the road towards smart and connected lighting is fraught with many unknowns as to the best connectivity technology and the needed sensor technology. Still, LED luminaires need to be installed now and remain in the field for 20-30 years. Interface standards are key to upgrading luminaires, and thus to future-proofing LED luminaires against these uncertainties that come with the Internet of Things (IoT). Secondly, luminaires can only be upgraded and serviced if the proper interface standards are in place. Interface standards are key for more-circular business models.

Zhaga has incorporated these industry challenges in its business motivation, whilst keeping to its mission and scope of specifying luminaire component interfaces. In the talk, we discuss a number of our most recent specifications. Next to being relevant in themselves, they also serve to make concrete the strategic directions that Zhaga has chosen, and illustrate what can be expected of Zhaga in the upcoming years.
To this end, we will cover the versatile receptacle for outdoor luminaires, the socketable flat system, and the MD-SIG interfaces between LED modules and drivers. Moreover, we will not shy away from recent developments, and will share in our talk the progress out of the most recent Zhaga member meetings.

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