HEVNEC Heavy Vehicle Network Communication. Lars Strandén, SP,

Transkript

1 HEVNEC Heavy Vehicle Network Communication Lars Strandén, SP,

2 Projektet Syfte: Kompetensuppbyggnad i form av förstudie Bakgrund till en kommande FFI huvudansökan Start t Slut Partners SP, Test Site Sweden, Scania CV AB

3 State-of-the-art för trådlös kommunikation Identifierade applikationer (ETSI, CALM m.fl.) 10 intervjuer; industri, högskola/universitet etc Olika begrepp i terminologi Sammanfattning av 7 telekom organisationer 21 fordonsrelaterade organisationer/projekt 6 myndigheter Tekniska översiktliga beskrivningar av kommunikation bl.a. CALM Kartläggning standarder, trender Sammanfattning av CVIS, SAFESPOT, COOPERS showcase Publik rapport (66 sidor)

4 Översikt modellering - Rubriker What is a Model Why models Standardization Initiatives OMG and UML AUTOSAR EAST-ADL Modelica Matlab/Simulink Modelling of Systems Modelling of Requirements/Properties Modelling Support for Dependability

5 Undersökning av nätverkssimulatorer Från Wikipedia: Network simulators are typically programs which run on a single computer, take an abstract description of the network traffic (such as a flow arrival process) and yield performance statistics (such as buffer occupancy as a function of time). Utvärdering av: ns2 - gratis ns3 - gratis OPNET Modeler - kommersiellt QualNet - kommersiellt OMNeT++ - för forskning gratis annars kommersiellt Slutsats: t Det kostar mycket antingen i eget arbete eller i inköp.

6 Undersökning av nätverksemulatorer Kommunicerar via radio Nod kan vara rörlig V2I Skickar olika stora meddelanden t.ex. med TCP, UDP Mäter olika egenskaper t.ex. jitter, throughput, tappade meddelanden, RSSI Utvärdering av: Iperf - gratis IxChariot - kommersiellt

7 Systemspecifikation General prerequisites Application description Application specific prerequisites Use Case Communication HMI Safety analysis analysis analysis analysis Functional requirements Non-Functional requirements Functional requirements Requirement set Scania CV AB requirements Subcontractor requirements

8 Systemspecifikation Tre föreslagna tillämpningar: Funktionella krav specificerade som UML Use Case (scenario) Kommunikationsbehov beräknas ISA (Intelligent Speed Alert) - Function that informs the driver of a coming changed speed limit and by that support the driver to drive at a legal and safe speed. The application shall also support ecofriendly driving by informing the driver of a lowered speed limit well ahead and when to release the gas pedal and start coasting in order to adapt the vehicle speed to the lowered speed limit without the use of the brakes.

9 Systemspecifikation WACC (Wireless Adaptive Cruise Control) - In dense traffic with speed fluctuations a cruise control that adapts the vehicle speed to other road user is useful. Using WACC it is possible to adapt to vehicles not in sight and thus improve performance. EVAA (Emergency Vehicle Approaching Alert) - Application for alert drivers of an approaching emergency vehicle. To reduce blocking of emergency vehicles it would be of benefit if the emergency vehicle could inform other road user well in advance. Such system would also improve road safety, since other road users would have longer time to react and give way to the approaching emergency vehicle.

10 Systemspecifikation Use Case (scenario) mall Name ID Level Super-ordinates Sub-ordinates Description Goal Trigger Involved actors Start state Main scenario sequence Step Main etc Main End state Exception <ID> Step 1 2 etc. <ID> End state Alternative <ID> Step 1 2 etc. <ID> End state Open issues Comments

11 Riskanalys Jämförelse ISO and IEC map risk Riskanalys av tillämpningarna ISA, WACC, EVAA Metodik: Choice of standard to follow Type of hazard System border System knowledge Prerequisites Method (HAZOP, FTA etc.) Hazard identification Hazardous events Hazardous situations Classification Continuing activities (risk reduction, design, implementation etc)

12 Antennplacering - Rubriker Antenna characteristics Single port antennas Multi-port antennas Antenna placement Today Proposed methodology 0 Directive gain [dbi] Dipole Corner + Spolier struts Theta degree Phi [degree]

13 Förslag på testmiljö - Rubriker Purpose of the test site Application to be tested at the test site Applications based on V2V and/or I2V Applications based on V2V Required, optional functionality Required, optional equipment Estimated costs Physical location

14 HEVNEC Nu och i framtiden Bra samarbete, lärt känna varandra Konkreta resultat Förslag på fortsättning Trådlös kommunikation mellan fordon => Oundvikligt! Kontakt: lars.stranden@sp.se