MQTT in the Internet of Things | Loop by Litmus Automation

MQTT in the Internet of ThingsVatsal Shah | Founder & CEO, Litmus Automation

Internet of Things WorldJune 16th-18th, 2014 | Palo Alto, USA

@vatsal1212 @LAutomation

Founder | CEO of Litmus Automation

Vatsal Shah

Loves IoTIndustrial Automation guy

@vatsal1212 [email protected]

OSS supporter

MQTT as an IoT Protocol.

Features of MQTT.

MQTT: Myths vs. Reality.

MQTT: Practical Implementations.

Agenda

What is the talk of the town?

3,000,000,000 User Interfacesby 2022.

14,000,000,000 ConnectedDevices.Billion

Fourth Industrial RevolutionSources: Bosch Blog 2014, Machina Research, 2014 and Cisco VNI Mobile Forecast Highlights 2012-2017

Lets look at how things TALK.Their Language = Protocol

Speak/listen only when neededAble to communicate with allAvoid getting drained by talking

Ideal Communication

Able to talk in all situations

The Battlefield of Protocols.Cluttered & No Single Direction

HTTP | AMQP | MQTT | XMPP | Others

Foundation and Community.

Late 1990s

Aug 2010

Nov 2011

Feb 2013

Invented by IBM and Eurotech

Protocol spec published royalty-free

Joined hands with Eclipse M2M group

Proposed as an OASIS standard

MQTTMessage Queuing Telemetry Transport

Publish Subscribe

MQTT Broker

Simple, Asynchronous (“push”) delivery of messages through Pub/Sub Architecture

Mob Apps

Dashboard System

Other devices

Data Storage

Enterprise Applications

Different Devices

and Applications

1-1 , 1 - N or N – 1 flexible Pub/Sub structure

Lightweight (network)Binary Protocol | Minimum Overhead | 2 bytes

Low bandwidth | Copes with Slow N/WMade for Unreliable Networks

Lightweight (CPU)Large & Small devices | Many languages

Quality of Service Levels

Publisher SubscriberPublish Publish

Delete Message

QoS 0: At most onceFire and Forget

Loop Broker

Publish

Quality of Service Levels

Publisher SubscriberPublish Publish

Delete Message

QoS 1: At least onceReliable mode

Loop Broker

Publish + PubAck

Store MessageStore

Delete

Quality of Service Levels

Publisher SubscriberPublish Publish

Delete Message

QoS 2: Exactly onceSafest but slowest

Loop Broker

Publish + PubRec + PubRel + PubComp

Store MessageStore

Delete

Pub Complete

1 {2 mqtt.connect();3 mqtt.publish();4 mqtt.subscribe();5 mqtt.unsubscribe();6 mqtt.disconnect();7 }89 Simple

Simple to implement | No SDK nightmares

Wildcard Subscription

Plant 1

Machine 1 Machine 2

Plant 1

Machine 1 Machine 2

Plant 1 / # Plant 1 / Machine 1 / +Plant 1 / + / Database

Plant 1

Machine 1 Machine 2

Multiple subscriptions | Easy client design

Last Will and TestamentBroker caches & publishes on death

MQTT: Myths vs. Reality

Broker is the Single Point of FailureBroker Cluster | Replication of states | Failover

Myth1

Security in MQTT is difficultSSL / TLS | Application layer | Privacy policies

Made for devices

Myth2

MQTT Payload Agnostic is an issueBig advantage for devices | Adaptability

Myth3

MQTT is not Scalable`

Myth4

Horizontal | Vertical | Across Datacenters

Getting off the ground: MQTT Use CasesImmobile: Factory Floor | Mobile: Container

Challenges

Immobile: Factory Floor• Robust communication• Existing standards / Retrofitting• Large data chunk• Security is the primary concern

Mobile: Container• Bandwidth , bandwidth , bandwidth• Small session length• Inaccuracy in sensor readings• Power

Factory Floor

MQTT Broker

Machine 1

Machine 2

Machine 3

Weather Station

ERP System

Inventory Mgt System

LED Boards

SCADA

HMI

MongoDBDatabase

WiFi

Ethernet

2G

WiFi

Factory Floor

MQTT Broker

Machine 1

Machine 2

Modbus /RS485

CPU

Modbus /RS485

CPU

PubSub

PubSub

ProtocolMapping

ProtocolMapping

Factory Floor: Machine 1

Temperature Plant / Machine 1 / Temp_serial#

Counter Plant / Machine 1 / Counter_serial#Counter Set Plant / Machine 1 / Counter_control_Serial#Stop Plant / Machine 1 / Stop_serial#Logs Plant / Machine 1 / Logs_serial#Consumption Plant / Machine 1 / Consumption_serial#Power Plant / Machine 1 / Power_serial#

QoS 1

QoS 2

QoS 2

Sensor to Topic mapping (Existing Modbus)

QoS 0

QoS 1

QoS 1

QoS 2

Perishable goods tracking

MQTT Broker

SCM System

Goods health logic

Android application

Real-time dashboard

(LoopBoards)

Cassandra Database

2G / 3G

Perishable goods tracking

MQTT Broker

Truck 1

CANBusmapping

CPU

2G / 3GTemperatureHumidity

Precise Location

Data Storage

Let’s choose the best for them.Things

We didn’t have a choice to customize our language.

Lets get Looped!

litmusautomation.com

@litmusautomation

@LAutomation

@Litmus Automation

Thank You

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