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== KNX / ZigBee gateway
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* Institut / Division:Embedded Systems / AAT
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* Contact: Friedrich Praus
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* Author: Matthias König / Michel Pleil
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* Category: Master thesis / Bachelor thesis
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* Keywords: KNX, ZigBee, Gateway
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image:KNX_ZigBee_gateway.jpg[ZigBee/KNX Gateway König]
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image:Zigbee_Pleil.png[ZigBee/KNX Gateway Pleil]
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=== Brief description
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This papers aims to illustrate the working principles and underlying technology of a KNX/ZigBee gateway, as well as to present instructions as to how to implement such a device. The focus lies on the reception of wireless commands, the processing and conversion into commands as specified in the KNX standard.
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=== Abstract König
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The KNX Association is administrator of the KNX standard, which is the only non-proprietary standard worldwide for building automation. By using KNX hardware, electronic building components (e.g. lighting, HVAC, alarm systems ...) can be controlled via a fieldbus.
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To expand the possibilities and to integrate more devices into the sys- tem to make it more flexible and mobile, the system can be equipped with a wireless interface (gateway). This allows a remote controlled operation of aforementioned components.
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The wireless interface uses ZigBee technology, as specified in the IEEE 802.15.4 standard. This ensures maximum interoperability as well as reliable and powerful broadcasting of commands.
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To ensure the interoperability of all those RF-modules, a capable receiver module is needed which evaluates and interprets received data as well as create a proper KNX command. It is the aim of this paper to illustrate the working principles and underlying technology of such a gateway, as well as to present instructions as to how to implement such a device. The focus lies on the re- ception of wireless commands, the processing and conversion into commands as specified in the KNX standard.
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=== Abstract Pleil
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Home automation systems are trying to make life easier and more efficient with the help of intelligent devices which communicate over a bus system with each other. The most common bus system is KNX which provides a lot of different possibilities for transmitting data and an easy integration into an existing power grid. Zigbee is a wireless communication system which is an excellent bus system in home automation with its efficient and energy saving features. Basics of both systems are described at the beginning of this thesis. The biggest part of this work deals with the conflation of Zigbee and KNX, called the Zigbee to KNX Gateway. By such a gateway it is possible to control a KNX lamp with a Zigbee switch. Such controls are turning on or off the light and control the brightness of the lamp. The gateway consists of three main parts, the Zigbee and KNX network and the java application which outlines the interface between these two networks. Structure, tasks and functions of a Zigbee network are described with the AVR RZ Raven Evaluation kit. The KNX system in a building is simulated with a KNX suitcase from Siemens which can be controlled over TCP/IP. A tutorial explains the start-up procedure of the gateway and demonstrates the functions of the gateway in practise. |
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