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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Creation of Smart Device Gateways Final Talk Maximilian Geissler - - PowerPoint PPT Presentation
Creation of Smart Device Gateways Final Talk Maximilian Geissler - - PowerPoint PPT Presentation
Lehrstuhl fr Netzarchitekturen und Netzdienste Institut fr Informatik Technische Universitt Mnchen Creation of Smart Device Gateways Final Talk Maximilian Geissler Chair for Network Architectures and Services Department for Computer
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Overview & Motivation
q Research area § Building Automation Systems (BAS) § Home Automation Systems § Home Automation devices: Temperature sensors, wall switches, remote controlled power outlets, infrared remote controlled devices, Philips Hue, … q Motivation: Interconnect Home Automation devices from different manufacturers
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Analysis
q Building Automation Systems § Large scale: LonWorks, KNX, BACnet § Small scale: X10, CEBus, HomeMatic, RWE SmartHome q Current situation § BAS from many different manufacturers § Most BASs are incompatible to other BASs q Research questions § Connect software applications to BAS devices § Overcome heterogeneity of BAS à Solution needed: Smart Device Gateways
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Analysis: Requirements
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Analysis: Requirements
F = Functional requirement, N = Non-functional requirement
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Related work
q openHAB v1 § Open Home Automation Bus § Control and monitoring of Home Automation devices § RESTful API q DS2OS § Distributed Smart Space Orchestration System § Stores and distributes state context between networked devices § Simple Java interface q Assessment (functional requirements):
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Hardware
q Analysis of various Home Automation protocols q Signal analysis with software defined radio (SDR) § Hardware: RTL2832U based DVB-T stick § Software: RTLSDR, GNU Radio and HDSDR q Analyzed protocols q Results lead to hardware design § Software controlled transceivers § Protocol drivers: Homegear, pilight and LIRC
Protocol Devices using the protocol Physical layer (OSI) Pollin Pollin power outlets 433 MHz, AM, OOK BidCoS HomeMatic devices 868 MHz, FM, BPSK NEC, RC-5 IR remote controlled devices, e.g. TV 940nm, 38 KHz
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Design: Software: Architecture
Web application Control script Software applications IR transceiver 433 MHz transceiver 868 MHz transceiver Hardware Pollin HomeMatic IR remote controlled devices Power outlet Power outlet Power outlet Samsung TV Switch Software SmartDeviceGateway
Details: Next page
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Design: Software: Architecture
SmartDeviceGateway Software Hardware 433 MHz transceiver IR transceiver 868 MHz transceiver Interface Driver CLI Protocol Adapter Bus <-> Driver CLI InterfaceBinding Interface Driver RESTful API Protocol Adapter Bus <-> Driver RESTful API InterfaceBinding Cacheable Storage Pollin ProtocolBinding Protocol Adapter Driver <-> Bus Protocol Driver pilight IR ProtocolBinding Protocol Adapter Driver <-> Bus Protocol Driver LIRC HomeMatic ProtocolBinding Protocol Adapter Driver <-> Bus Bus Protocol Driver Homegear
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Design: Software: API
q HTTP REST API q Server push is possible, e.g. using WebSocket à R10 can be fulfilled q Fulfills functional requirements R5, R6, R7, (R10) and R19 q Resource hierarchy: /devices GET /add POST /discover GET /<device> GET, POST, DELETE /state GET, POST /addons GET /repo GET /add POST /<addon> GET, POST, DELETE /settings GET, POST /status GET
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Implementation
q Software § Protocol drivers: Homegear, pilight and LIRC § Integration software: openHAB § Protocol adapters: openHAB Bindings
- Homegear:
HomeMatic Binding exists
- pilight:
Implemented using Exec Binding
- LIRC:
Implemented using Exec Binding q Hardware § Picture on next slide
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Demo
Switching Pollin power outlets on and off with a HomeMatic switch using a Smart Device Gateway.
433 MHz transceiver IR transceiver 868 MHz transceiver Raspberry Pi CUL
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Evaluation
ß ß ß ß ß
à Solution works
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Future work
q Implementation of proposed API (R5, R14) § Let external applications control and monitor Smart Device Gateways § Installing and removing protocol drivers remotely q Interconnect multiple SDGs (R13) § Redundancy § Extend radio range q Integrate into DS2OS § Home Automation devices available in DS2OS
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Contributions
q Requirements for Smart Device Gateways q Overview of existing approaches q Assessment of existing solutions: DS2OS and openHAB q Overview and assessment of state-of-the-art technology q Software design § Architecture for Smart Device Gateways § API for external applications q Hardware design q Implementation of a Smart Device Gateway q Assessment of implementation (evaluation)
Questions?
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Maximilian Geissler - Creation of Smart Device Gateways - BA Final Talk
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Creation of Smart Device Gateways Maximilian Geissler max.geissler@tum.de Thank you for your attention! Thanks to
- Dr. Marc-Oliver Pahl (Advisor)
- Prof. Dr.-Ing. Georg Carle (Supervisor)
Thank you
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