Siemens Technology Day @ MVML, Chakan · Siemens Technology Day @ MVML, Chakan Powertrain Press Shop Paint ... polling – method with a flexible data rate 1 2 3 ... Vivek Roy Industrial

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Wireless Solutions for Automotive

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Industry Sector Page 2 2011-12-13

Agenda

• Key drivers

• Principles of Industrial Wireless LAN

• Technology

• Planning a wireless system

• Applications in Automotive

• Advantages



Key drivers..

Availability of data

Expandability of the system

Coverage of areas difficult to access

Increased sensor density and therefore

increased process quality

Available at any time and any place

Measured data - saving of cabling costs

Systems distributed worldwide can be

merged to form one network and monitored

accordingly

Automation communication throughout the

system - central management of branched

networks

Maintenance

work

Poor

expansion

options

Commiss-

ioning and

modification

Wear & tear

on materials



Agenda

• Key drivers


• Technology



• Advantages



Industrial Wireless LAN - the three principles

Powerful Secure Reliable

WLAN standard IEEE 802.11n

with up to 450 Mbps

Increased range thanks to

MIMO technology with three antennas per wireless interface

Simple configuration

Access control (authentication)

Encryption of the data

Cyclic data traffic

(deterministic)

Redundancy

Monitoring of the wireless link

Stable wireless link



Wireless technologies – different characteristics

Range, mobility

Personal

Area (PAN)

Local

Area (LAN)

Wide

Area (WAN)

100 m 200 m

Data rate in Mbps

UMTS/ EDGE/

GPRS/ GSM

IEEE 802.11n

IEEE 802.11g/a

IEEE 802.11b

WLAN/ IWLAN

Wireless modem 433, 868, 915 MHz (US only)

> 100

54

11

2

0,1

0,01

Bluetooth

IEEE 802.15.4

WirelessHART



Trend towards higher bandwidths Evolution of the IEEE Standards from 802.11abg to IEEE 802.11n



IEEE 802.11n vs. IEEE 802.11abg –

Multiple In Multiple Out vs. Single In Single Out

SISO:

One transmitted signal,

one antenna that

transmits - propagation

of the signal by

reflections.

Here the receiver

compares the quality of

the signals received via

different paths and

uses only the best one.

The other signals are

discarded.

MIMO:

Three transmitted

signals, three antennas

that transmit -

propagation is

deliberately via different

paths. Here, the signals

received via different

paths are added

correctly according to

phase with the overall

result of an

amplified signal

Multiple In Multiple Out (MIMO) allows a higher bandwidth and greater reliability than Single In Single Out

(SISO). The bandwidth and reliability grow due to the active use of several antennas.



Agenda

• Key drivers


• Technology



• Advantages



What is the "industrial" application for WLAN?

e.g. cyclic

process data

transmission e.g. mobile service

connections

Industrial applications for open and closed loop control of facilities require

deterministic behavior for cyclic communication and fast reactions!

e.g. connection

of existing

fieldbus systems

controller

mobile I/O (sensor/actuator)



Which media access is suitable for the automation?

Advantages and Disadvantages of PCF:

+ Real-time capability, devices do not „starve“

+ Fast roaming possible (RR)

+ Not widespread, low risk of hacker-attacks

- Low bandwidth

- Low resistances to interferences from neighboured WLANs

The deterministic Point Coordination Function (PCF) is suitable for real-time application in the

automation.

Standard WLAN with PCF does provide deterministic and is suitable for real-time

applications in the automation, because of that.



iPCF: polling – method with a flexible data rate

1 2 3

Flexible data rate:

If a large area needs to be covered (e.g.

use of omnidirectional antennas), the

clients can drop back to 6 Mbps or lower.

Advantage / disadvantage:

Large range / less real-time performance

Poll

1

2

3



In areas that would cause

problems for normal wireless

systems, the RCoax radiating

cable functions as a special

antenna for the SCALANCE W

access points

Typical applications include

driverless transport systems,

overhead monorail conveyors,

storage and retrieval devices

IWLAN "wired" –

the RCoax radiating cable



RCoax video..



iPCF: roaming method based on the example of

RCoax

RCoax cable RCoax cable

Mobile client

Client roams from AP1 to AP2

Roaming - Example of an iPCF client with 2 RCoax

segments - each segment is assigned to a different AP. Here, roaming is started automatically when the

client moves into the next RCoax segment.

1 2

1

2



iPCF: Roaming methods compared

Roaming with iPCF in 50 ms

is almost 100 x faster than the standard method!

In conjunction with a stable

wireless link using RCoax

cable, iPCF allows roaming

by maintaining deterministic

data traffic; iPCF also

allows roaming in a much

shorter time than non-iPCF

systems (for this reason,

devices capable of iPCF

are often known as "rapid

roaming" devices)

Packet dela

y

Seconds (recording time)



Agenda

• Key drivers


• Technology



• Advantages



WLAN Planning & Deployment

FLUKE Air Magnet

AirMagnet Planner Predictive wireless LAN design & modeling

No site visit required

Initial estimate of number of APs and placement

AirMagnet Survey Collect real data from environment

Survey tool for accurately determining AP placement

Confirming deployment, ongoing network optimisation



Planning

• Design and Model WLANs for any indoor

environment

– Design WLANs before physical AP roll-out

– Take into account building materials and environment

– Compare different leading AP vendors you

wish to roll out

– Optimize AP count, layout and configuration for

maximized balance of cost versus coverage

and performance

– 3D Viewer

• Produce a predictive report

– Estimate infrastructure costs

– Show expected coverage

Plan AP #, location, configuration



Agenda

• Key drivers


• Technology



• Advantages



Engine assembly..

MDC Power GmBH (Daimler Engines)

The challenge

Aims of MDC Power GmbH

Design of an integrated material and assembly flow

Across several assembly lines consisting of suspended monorails

with approximately 250 carriage

units

The units travel in 3 main lines and in diverse

supply, ancillary and buffer lines on 2 levels

Designed for 500,000 engines annually

Fully automated store that also serves as a decoupling module

Perfectly matched solutions with scalable functions and capabilities from a single source to

enable system-wide, cost-effective handling of the demanding tasks in this segment.

Solution: Networking in vehicle construction/Powertrain Products: SCALANCE W, X, RCoax, as well as S7-300, ET200pro, Sinamics G120D and others Sector: Automotive industry



Wireless solution in engine assembly

The solution

Communication with IWLAN

Wireless networking of the carriage units of the

suspended monorail via Scalance W747-1RR client

modules (rapid roaming) for fast transfer between the

access points, and specific functionalities for PROFINET IO

data traffic (iPCF³)

The receivers are RCoax radiating cables that establish

a precisely defined and interference-free wireless field

simply and cost-effectively.

The radiating cables are connected to the Profinet network at the

control level of the assembly conveyor system via one Scalance

W788-1 RR access point each as the infeed station

The products:

250 x SCALANCE W747-1 RR 6 x SCALANCE W788-1 RR 400 m RCoax radiating cable

Solution: Networking in vehicle construction/Powertrain Products: SCALANCE W, X, RCoax, as well as S7-300, ET200pro, Sinamics G120D and others Sector: Automotive industry



Suspended Monorail Conveyor Assembly shop

Batch plate conveyor

The challenge

Customer objective (economic view)

Increase in productivity and cycle time reduction

Reduced maintenance and servicing costs

Reduction of downtime costs

Customer objective (technical view)

High plant availability

Secure and wear-free data transmission

Avoidance of contact wires susceptible to maintenance and contamination

Easy servicing and maintenance

Heavy-duty suspended monorail

Electric suspension monorail with a swivel unit



Suspended Monorail Conveyor Our Solution!

The solution

Wireless communication solution

Wireless communication between controller and hangers

An RCoax leaky wave conductor runs parallel to the suspended monorail, forming a defined, optimized radio field around the conductor

Installed power splitters increase the maximum segment length by central supply

Utilization of both frequency bands (2,4/ 5 GHz) to avoid radio interference

SIMATIC S7-300 in the controllers for the suspended monorail/skid

Integrated PROFINET solution

RCoax



Agenda

• Key drivers


• Technology



• Advantages



Advantages of using Industrial Wireless LAN

IWLAN is reliable, rugged and secure!

Greater system flexibility and cost saving

Data transmission to mobile communication partners is without physical contact and therefore not

subject to wear and tear/contact wires and trailing cables are substituted

Investments in existing systems are protected

Integration of PROFIBUS field devices into an IWLAN radio network by means of IWLAN/PB LINK PN

IO

Investments in future systems are protected

Future-oriented technologies and continuous expansion of available products with consistent

compatibility. Innovative technology, specially for the tasks in the industrial environment (iFeatures),

can be expanded via KEY-PLUG.

Planning certainty and know-how protection

Long product useful lives and availabilities ensure system concepts designed for the long term and

the benefits of employee know-how.



Thank You!

Vivek Roy

Industrial Communications & Identification

Industry Automation

Siemens Limited, Kalwa, Thane 400 601

Tel: +91-22- 3326 5765

Mob: +91 9820026855

Email: [email protected]

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Siemens Technology Day @ MVML, Chakan · Siemens Technology Day @ MVML, Chakan Powertrain Press Shop Paint ... polling – method with a flexible data rate 1 2 3 ... Vivek Roy Industrial