On intelligent lighting of IOT

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Talking about intelligent lighting of IOT

most lighting control systems are still based on Legacy connection models, which are proprietary in this field. The in-depth integration with is the next major disruptive change, which will lead to the seamless integration of real intelligent lighting and building connection management infrastructure. Processing and connection can improve sustainability and maintainability, and enhance the personalized user experience in our interaction with the space where we live or work, thereby improving comfort and happiness

in the past three years, a consortium composed of major European companies has been committed to defining and implementing a set of intelligent solid-state lighting open architecture (openais). Part of the openais project funded by the European Union in the horizon 2020 plan has shown how IOT technology can be more deeply integrated, and in the near future, as a part of intelligent connection building, IOT technology, such as the calculation formula of smooth intersection frequency of constant vibration level sweep experiment, can be more deeply integrated

the deliverables of this architecture describe the use of digital network communication based on IP packets for lighting control and sensor data collection. This facilitates the installation and maintenance of lighting equipment. The impurity content of the same network infrastructure is still very high, and the facilities can be reused as the backbone of the whole building in other application fields, or seamlessly integrated with general information technology and building management systems

openais architecture and its instantiation in the full-scale real office building pilot demonstration also show how an open collaborative ecosystem enables communities to provide intelligent lighting solutions that work well together and are easy to install, use and maintain

network architecture

the connectivity architecture of openais is based on a common IPv6 wired and wireless hybrid network architecture. The suggestion of system technology is to use Ethernet/POE for line segment and wireless thread. However, openais network can also support any other IPv6 transmission

IPv6 packets can be connected to each other through cheap and universal switching or routing devices, which do not require lighting application domain knowledge. Backbone and edge networks can be installed and managed in a unified manner, using expertise in the field of information technology networks or existing infrastructure. In addition, this general network can be used for various other machine to machine signaling or data collection

ensuring the interoperability of multiple suppliers is a basic requirement of openais network system definition. For the wireless field, the requirement of interoperability has prompted the proposal to use threading protocol as the main IPv6 network technology of IOT

in a word, openais architecture describes a network system with the following characteristics:

IPv6 based communication as the transport layer, supporting IPv6 Multicast across wired or wireless network segments

all application layer communications use the standardized COAP protocol defined by IETF for restricted embedded devices

the security and privacy of data communication are achieved through the debugging of transport layer and application layer The combination of configuration and encryption to realize the communication mode of

lighting domain

expand the general IP network to cover lighting control on a large scale in multiple heterogeneous networks, which brings challenges. When these problems are solved, some of the most valuable openais architecture definitions have emerged:

expand the general IP network to cover lighting control on a large scale in multiple heterogeneous networks, which brings challenges, When these problems are solved, some of the most valuable openais architecture definitions emerge:

is defined as a low latency, high synchronous group communication mode and protocol. This assumes a many to many topology using multicast IPv6 addresses. For lighting control, group communication is at the center and is recommended to increase the scalability of high node count systems, rather than the more traditional client server or device to cloud unicast mode

describes a distributed control operation model, which does not rely on a central management server for basic communication. This control model can be based on redundancy. Even if the connection with these central infrastructures is lost or unavailable, it can be degraded gracefully to achieve basic functions. Such basic functions may be simple, but the necessary optical switches are real-time

provides a flexible application layer API to optimize the underlying network - openais project defines and provides an object model with high intelligence, multi-function and future oriented functions for connecting lighting devices

Figure 1 IOT lighting domain architecture

openais practice

in the first half of 2018, openais system was installed in the GGD Office of de Witte Dame, an industrial heritage building located in the center of Eindhoven, the Netherlands

Figure 2 Eindhoven, the Netherlands

this practice includes:

400 + lighting node lamps, which are connected by digital IP network, and use Ethernet/POE/upo beam (indenter) to move downward. W should be adjustable for wireless backbone and wired connection

advanced lighting control strategy, including local occupation and photosensitive sensor of each lamp, particle size sensing and control strategy (local dimming), And personal control through intelligent office applications

collected summary data about the occupancy of the area and provided it to facility managers so that they can evaluate the efficiency of space utilization

for this experiment, some openais alliance members provided thread technology components and implemented thread group authentication procedures for deployed components. Compared with Beijing, Shanghai, Guangzhou and Shenzhen using thread as the local IPv6 protocol, each node has its own IPv6 address, which also allows the natural interconnection between the light points connecting the wireless network and the Ethernet based wired network connected through the general thread edge router. In addition, thread allows the reuse of the same non differentiated application firmware modules on all wired and wireless devices

the project partners of openais alliance are respectively sign (the former Philips Lighting Company), Zumtobel lighting, Tridonic, Johnson Controls, dynniq, NXP, arm, Eindhoven University of technology and TNO ESI

the detailed description and experimental demonstration of the final architecture of openais can be viewed on the alliance station

Copyright © 2011 JIN SHI