© Semel2006

VIKING WORKSHOPHamburg March 15th – 16th

FCD via GPRS – The Green Box SystemSemel Oy

Börje Nummelin

© Semel2006

GREEN BOX

• A GPRS based solution for;– Collect road charges

– Surway Link speed– Collect and distribute FCD information

– Piloted with 1.100 Taxis

• Advantage of GPRS solution in Green Box

– Low Data consumption (less than 1Mb/month/car)– Packed data

– EMV level encryption– Heavy duty servers based on standard technology

– On line solution

© Semel2006

GREEN BOX

OBU

OBU-Windows CE-embedded platform-Communication SW (Semel)-Application SW, GPS signal to zones (Semel)-Display, Navigator or Mobile Phone

LANGPRS

GW(Semel)

ERP(SeveralPoss.)

GPRSnetwork

GPRS Gateway (Semel)- Communication- Keep alive (GPRS)- Administration- OBU On-line SW updates- OBU New billing parameters- OBU diagnostics- Connection to other services- Admin map – zones

ERP - Admin, billing- E-commerce

Based on on-line GPRS connection

© Semel2006

GREEN BOX VEHICLE

• Five levels– Road charge– Link speed– FCD– Taxi stations– Dispatch areas

– GPS signal calculated every second

GPS

Dispatch zones

Taxi stations

FCD

Link speed

Road charge

0

1

2

3

4

© Semel2006

GREEN BOX BACK OFFICE

OBU

Applicationinterface:

gwIntegration

(XML)

mobile networkor WLAN

ERP

operativeapp B

operativeapp C

alarm

encryption/decryption

compression

GW backbone

GIS

BroadCast

TelephonyLink

(SMS,email,GSM locator)

Resend

binary filetransfer

© Semel2006

V1

V1

Road X

V1

V2

• Road charge zones type ’V2’

• RCD zones type ’Road X’

• Link speed zones type ’V1’

GREEN BOX PRINCIPLE

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GREEN BOX PRINCIPLEEXAMPLE

• Road charge zones (ex 3000)

• FCD zones (ex. 371, 370, etc.)

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• Road charge zones– Different

classes of vehicles simulated

– Different charge zones

K

V

R

GREEN BOX PRINCIPLEEXAMPLE

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• Link speed points

GREEN BOX PRINCIPLEEXAMPLE

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GPRS RELIABILITY AND APPLICATION LEVELS

• GPRS application packed and iPSec encrypted• Different message priority levels

– Payment transaction 100 % by applications– Important broadcasts 3 times sent– Less important only one sending

• GPRS reliability figures– GSM/GPRS network loses app. 2% of messages– Testfigure of 2 weeks (as example);

• Sent 136 000 messages• Two resets, meaning loss of network contact

• Coverage practically 100%

© Semel2006

GPRS NETWORKRELIABILITY AND COVERAGE

• Example of– New Initialisation

into GPRS network

– Coverage during 2 weeks test

© Semel2006

SUMMARY

• GPRS is suitable for online FCD gathering, and distribution, but needs tailored solution

• GPRS coverage is very good

• Data consumption can be handeled by using Green Box type zone solutions

• Project will end in September, and then there will be data from Green Box cars to compare with roadside FCD cameras.