wireless factory starter group meeting n 1 20 - 21 october 2009 - … · 2009-10-21 · radio...

Radio Technology for Real-Time Application -The flexWARE Project

Wireless Factory Starter Group Meeting N° 120 - 21 October 2009 - ETSI,Sophia Antipolis, France

Lutz Rauchhaupt - The flexWARE Project - 21st October 20091

Dr.-Ing. Lutz Rauchhaupt

Institut für Automation und Kommunikation e.V. MagdeburgWerner-Heisenberg-Str. 139106 MagdeburgTel. +49 391 9901495Fax: +49 391 9901590E-mail: [email protected]

Institut f. Automation und Kommunikation e.V. MagdeburgResearch topic "Wireless Industrial Communication"

Integration of wireless technologies and solutions into automation communication networks

Assessment of wireless technologies and solutions with respect to industrial automation applications


Outline

1. flexWARE Target Application Scenarios

2. flexWARE Key Features


3. flexWARE Architecture

4. flexWARE Basic Technology Investigations

� Wireless LAN

� DECT CLDPS

Flexible Wireless Automation in Real-Time Environments

� Funded by European Commission (7. Framework, STREP, Objective 3 „ICT-2007-2“, FKZ: ICT-224359)

� Duration: 09/2008 - 08/2011

� Coordinator: Austrian Academy of Sciences (AAS, AUT)� Partners:

� Austrian Academy of Sciences (AAS, AUT)


Austrian Academy of Sciences (AAS, AUT)� Institute for Industrial IT (inIT, GER)� Institut für Automation und Kommunikation (ifak, GER)� Connect Blue (cB, SWE)� Oregano Systems GmbH (ore, AUT)� University of Catania (uniCT, ITA)� Schneider Electric (schn, FRA)� rt-Solution.de GmbH (rt-sol, GER)

� Website: http://www.flexware.at

flexWARE Target Application Fields

Storage systems Luggage transport systems


Crane systems

flexWARE Target Application Scenario Provided by FIG Members

AGVs for smart warehouse

Description:Up to 100 AGVs moving in a 100m x 100m areaDynamic path calculationMoving speed: up to 10m/sCentralised architecture managed by a controller in the backbone networkNeed for mobile wireless push buttons for global emergency s top of all


Need for mobile wireless push buttons for global emergency s top of all vehicles

Expected performances:AGV PLC � backbone: non critical traffic (traceability, non critical commands), latency between 50 ms and 100 msAGV PLC � devices: latency < 2 ms, so wireless is not considered here.Central controller � HMI (mobile wireless emergency stop)

Trend for the future: convergence between different wireless technologies with central configuration and maintenance. Strong interest for middleware independent from wireless technology .

flexWARE Target Application Scenario Provided by FIG Members

Wireless industrial cranes over electrolytic cells for aluminium reduction

Description of the setup:2 parallel rows of 200 electrolytic cells (1500m long)8 overhead cranes move along the cells to handle the raw materials in and the liquid metal outEach crane operates over 300m


Wireless communications:Crane PLC � central controller in the plant backbone

Task assignment & emergency commands from central controller to the craneReport of status information by the craneHMI traffic for the operator of the crane

Crane PLC � Crane PLC Anti-collision system

Main requirements:Network Security, Reliability, Safety (SIL3)

� Factory Automation based on wireless technology

� Support of� Mobility� Flexibility � Scalability

flexWARE � Integrated Solution for Factory Automation


� Scalability� Network Based Control� Quality of Service� Safety and security

flexWARE Key Features

� Multiple cells under one roof (Bandwidth and range limitation)

� Seamless handover between cells (Real-time requirements)

� Resource management (Bandwidth limitation and real-time requirements)


� Need for location awareness (Safety requirements and fast handover)

� Clock synchronisation (Localisation and real-time requirements)

� Integrated security approach (Safety requirements)

flexWARE System Architektur

flexWARE controller

flexWARE access point

Real-time Backbone Network


flexWAREnode

Automation device

Wireless communication

flexWARE QoS Architecture: Controller (FC)


flexWARE QoS Architecture: Access Point (FAP)


flexWARE QoS Architecture: Node (FN)


flexWARE Handover Concept


Approach: Usage of position information and the available centralised view of the system

Investigation of the Timing Behaviour of Industrial Wireless LAN Solutions

Condition summary -40

-30

1 m 3 m 10 m

Tx ChannelInterfererWLAN 3

Tx ChannelInterfererWLAN 2

Tx ChannelSUT

WLAN 1

Tests objective

� Investigation of influences to the time behaviour� Wireless data rate

� Implementation

� Adjacent channel interference


Condition summary

� 3 industrial WLAN solutions from different manufacturers

� 93 test cases with 500.000 packet transmissions each (93 Mio time values)

� WLAN Channel 1, 7, 13

� Data rates [MBit/s]: 6, 9, 12, 18, 24, 36, 48, 54, auto

2400 2410 2420 2430 2440 2450 2460 2470 2480-100

-90

-80

-70

-60

-50

-40

Leve

l [dB

m]

Frequency [MHz]

Test Setup for WLAN Investigations

1, 3

, 10

m

APChannel 13Communication Load: 1518 Bytes / 0,4 ms

APChannel 7

10 m

Communication Load: 64 Bytes / 10 ms

APChannel 1Communication Load: 1518 Bytes / 0,4 ms

1, 3

, 10

m

WLAN 1 With Different Data Rates Without Interferer

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Transmission Delay at 6 MBit/s Transmission Delay at 54 MBit/s

0 5 10 15 20 25 30 35 40 45

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Transmission Delay [ms]0 5 10 15 20 25 30 35 40 45

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Transmission Delay [ms]

Transmission Delay at Different Data Rates

6

8

10

12

Tra

nsm

issi

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elay

[ms]

Minimum Maximum Percentil 95th


0

2

4

6

TC 1.1.1 TC 1.1.2 TC 1.1.3 TC 1.1.4 TC 1.1.5 TC 1.1.6 TC 1.1.7 TC 1.1.8 TC 1.1.9

6 Mbps 9 Mbps 12 Mbps 18 Mbps 24 Mbps 36 Mbps 48 Mbps 54 Mbps automatic

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issi

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elay

[ms]

WLAN 1 at 12 MBit/s without Interferer

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Transmission Delay for Test Case 1.1.3 Update Time for Test Case 1.1.3

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Transmission Delay [ms]0 10 20 30 40 50 60

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Timing of WLAN 1 (Channel 7, 12 MBit/s) with Interferences from Channel 1 and 13

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Distance of the interferer = 1 m = 3 m = 10 m


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Timing of WLAN 1, 2 and 3 (Channel 7, 12 MBit/s) with Interferences from Channel 1 and 13 in 3 m distance

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WLAN 1 WLAN 2 WLAN 3


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Investigation of the Timing Behaviour of DECT CLDPS Protocol

Point-to-Point-Connection


FT-PT1

PT1-FT

DECT

DECT with CLDPS

Timing Behaviour Investigations of a DECT SolutionTest objective� Investigation of influences to the time

behaviour� Principal behaviour� Optimisation potential

Influencing values for defining test cases



FT-PT1

PTs-FT with Burst Transfer FT-PTs

Point-to-Multipoint-Connection

Multipoint-to-Point-Connection

Burst Transfer FT-PTs

Distributed Transfer FT-PTs

Distributed Transfer FT-PTs with Transfer PTs-FT

Burst Transfer FT-PTs with Transfer PTs-FT

PTs-FT with Distributed Transfer FT-PTs

PT1-FT

Influencing values for defining test cases� ca. 30 test cases has been executed with

10.000 packets per connection (ca. 5,6 Mio time values)

� User data length: 64 Byte (1518 Byte)� Application cycle: 5 ms ... 70 ms

Test Architecture for DECT with CLDPS

Test Application

Distributed Test

Distributed Test ComponentDistributed Test

ComponentDistributed Test

Anritsu Data Quality Analyser

Test Producer or Test Consumer

Test Producer or Test Consumer

DUTDUT

Wireless Communication MediaDECT with CLDPS

Conditions

Communication Characteristics

Communication InterfaceEthernet 10 MBit/s

Distributed Test Component

DUT

Distributed Test Component

DUT

Fixed Terminal (FT)Portable Terminal 1 (PT1)

RF Cable

Spectrum FT-PT-Transmission, TAC = 5 ms


Transmission Delay and Update Time forFT-PT-Transmission

TAC = 30 ms


TAC = 30 ms

TAC = 5 ms

Spectrum FT-PTs-Transmission, Distributed TAC = 3*24 ms

FT to PT1 FT to PT2 FT to PT3 FT to PT1 FT to PT2

TAC=3*16ms / 3*24ms

16ms / 24ms


Transmission Delay and Update Time forFT-PTs-Transmission, Distributed TAC = 3 * 24 ms


FT - PT2FT - PT1 FT - PT3

Spectrum FT-PTs- and PTs-FT-Transmission, Distributed TAC = 3 * 24 ms and TAC = 24 ms


Media Time FT-PTs- and PTs-FT-Transmission,Distributed TAC = 3 * 24 ms and TAC = 24 ms


Transmission Delay and Update Time FT-PTs- and PTs-FT-Transmission

FT - PT


FT - PT

PT - FT

Media Time DECT versus WLAN

-50

-40

-30

Leve

l [dB

m]


648 µs

0 100 200 300 400 500-80

-70

-60

Leve

l [dB

m]

Time [µs]

ca. 190 µs at 54 MBit/s

Transmission Delay and Update Time DECT versus WLAN, TAC = 10 ms

0 5 10 15 20 25 30 35 40 45

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DECT CLDPS PT-FT WLAN 12 MBit/sDECT CLDPS FT-PT

Summary and Outlook

� flexWare addresses future wireless cellular network solutions for real-time communication in the factory hall.

� flexWare takes into account different basis wireless technologies.

� The investigation of available implementations is the basis to indicate


� The investigation of available implementations is the basis to indicate optimisation potential with respect to the flexWARE key features.

� Proof of concept platform will be implemented based formal specification.

� Formal specification and simulation model can support future standardisation activities.

wireless factory starter group meeting n 1 20 - 21 october 2009 - … · 2009-10-21 · radio...

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