Are Open IoT Technologies ready for the Enterprise?

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Are Open IoT Technologies ready for theEnterprise?Experiences with Wireless IEEE 802.15.4, MQTT and OpenHAB

16. September 2014Experiences with Wireless IEEE 802.15.4, MQTT and OpenHAB | Mike Hogg Folie 1

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Who are Zuhlke?

Experiences with Wireless IEEE 802.15.4, MQTT and OpenHAB | Mike Hogg 16. September 2014 Slide 2

• Software Solutions, Product Innovation and Consulting

• Pan-European

• Over 8000 projects delivered

• Revenue of €87M (2013)

• 600 Employees

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Zuhlke: Embedded to Cloud

16. September 2014Experiences with Wireless IEEE 802.15.4, MQTT and OpenHAB | Mike Hogg Slide 3

Public Private

Monitoring Alerts

Upgrades

Aggregation

Remote Control

Configuration Management

CPU Offload Storage

Cloud Services

Apps

Enterprise Systems

Web

Apps

3rd Party Services

Web

Devices

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Bespoke Systems:Liebherr Service & Fleet Management


Internet

LiDAT DataWarehouse

LiDAT Servers

MachineServices

LTPServer

LiDAT Portal:• Customers• Service Personnel

GSM /GPRS

Vehicle Telematics:• Position• Usage• Diagnostics

Images: Liebherr

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Bespoke Systems:Viessmann Fuel Cell Research


…

Devices in the field(fuel cells) collectoperational data

Engineers monitor thedevices and evaluatethe data for use inproduct development.

• Anonymous Devices

• 12.6 TB data per month

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Are Open IoT Technologies ready for theEnterprise?


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Experimental Setup


HUB

802.15.4 WirelessMoteSensor

MoteSensor

MoteSensor

Browser

Mobile

3rd PartyServices

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Hardware: Mote

ATmega256RFR2 Soc (Atmel Xplained)

• 802.15.4 Transceiver

• Low power consumption (when radio off)

• Board has temperature sensor (via I2C) and antenna


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Hardware: Hub

Raspberry Pi B

• Raspbian with custom kernel

• 802.15.4 radio shield connected via GPIO (Atmel AT86RF233)


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Software: Communication Stack


802.15.4 PHY

IP

TCPCustom

protocol*

MQTT Broker (pub/sub)

Application

Ethernet PHYMosquittoOpen Source MQTT Broker

* Not using TCP or 6LoWPAN over 802.15.4

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Software: Hub

OpenHAB open source smart home platform

• Large number of bindings, including MQTT

• UIs for web, iOS and Android

• Java based



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Software: 3rd Party Service

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IEEE 802.15.4

• Simple & low level – minimum resources and footprint

• 127 byte frames – fine for simple protocols

• Range 10-20m, hence significantly lower power consumption that WiFi

• Can use Zigbee stack on RPi

MQTT

• Lightweight nature fits simple processors

• Eclipse Paho and Mosquitto work well

• Good interoperability with other open and proprietary services

• Last Will Testament enables elegant handling of mote outages

Positives (1of 2)


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OpenHAB

• Well featured project with multiple integrations

• Creating UIs and automating rules is very easy– For instance email alerts on thresholds

• OpenHAB mobile applications for Android and iOS work well

Positives (2 of 2)


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• MQTT uses TCP/IP, and an open TCP connection, requiring custom handlingfor efficient handling– MQTT-SN aims to address this, but open source offerings not mature yet

• MQTT uses mostly human readable messaging, with the entire topic name ineach message.

• OpenHAB and its bindings suffer numerous small defects

• Care needed in Hub network location– We have a strong preference for pushing data to the internet, not letting the internet in

• We still needed to write bespoke code!

Challenges & Concerns


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Mike HoggEmbedded and Mobile Systems Business Unit Lead

http://uk.linkedin.com/in/mikehogg

mailto:[email protected]

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