Maneuver based testing of integrated vehicle safety systems Rudolf - - PowerPoint PPT Presentation

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Maneuver based testing of integrated vehicle safety systems Rudolf - - PowerPoint PPT Presentation

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Maneuver based testing of integrated vehicle safety systems Rudolf Ertlmeier 1 Kathrin Sattler 1 , Andreas Raith 1 , Thomas Brandmeier 1 Daouda Sadou 2 , Christian Schyr 3 1 Institute for Applied Research (IAF); Ingolstadt University of Applied

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SLIDE 1

Maneuver based testing

  • f integrated vehicle safety systems

Rudolf Ertlmeier1

Kathrin Sattler1, Andreas Raith1, Thomas Brandmeier1 Daouda Sadou2, Christian Schyr3

1Institute for Applied Research (IAF); Ingolstadt University of Applied Sciences 2Continental Automotive GmbH 3IPG Automotive GmbH

"‘apply & innovate 2012"’ - IPG Technology Conference

  • 18. / 19. September 2012
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Motivations Test system Crash data feeding Outlooks

Agenda / Contents

1 Motivations

Networking of automotive systems Integrated safety systems New test concept

2 Test system

Realisation Example of continuous testing

3 Crash data feeding

Selection and feeding Crash data scaling

4 Outlooks

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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SLIDE 3

Motivations Test system Crash data feeding Outlooks

Agenda / Contents

1 Motivations

Networking of automotive systems Integrated safety systems New test concept

2 Test system

Realisation Example of continuous testing

3 Crash data feeding

Selection and feeding Crash data scaling

4 Outlooks

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks Networking of automotive systems

Development of system complexity

development in recent years The number of various control units in vehicles is expanding extremely since the last few years

⇒ system complexity is

increasing constantly

⇒ testing is getting more and

more extensive

Gateway

CAN

Diagnosis

CAN CAN CAN LIN MOST FlexRay CAN

...

source: Kiesewetter T.: Der VW Touareg - Karosserieelektronik und Infotainment ATZextra, Nr. 2010-02, page 47, 2010

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks Integrated safety systems

New safety system concept (e.g. SCU - Safety Control Unit)

see hear e.g. ACC e.g. CISS (Crash Impact Sound Sensing) feel communicate e.g. ESC e.g. Car-2-X

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks New test concept

Idea of a new test concept for safety systems

idea of the new test concept combination of:

  • vehicle simulation
  • environment simulation
  • crash data feeding

for MiL, SiL and HiL test environment

vehicle- and environment simulation crash data SCU SCU

project: VISAPS

  • modular flexible system for development and production release of

networked systems (MiL, SiL, HiL - test environment)

  • consistency and automation of testing
  • project partners:
  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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SLIDE 7

Motivations Test system Crash data feeding Outlooks

Agenda / Contents

1 Motivations

Networking of automotive systems Integrated safety systems New test concept

2 Test system

Realisation Example of continuous testing

3 Crash data feeding

Selection and feeding Crash data scaling

4 Outlooks

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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SLIDE 8

Motivations Test system Crash data feeding Outlooks Realisation

Concept

HiL (real time system) vehicle & environment simulation interfaces (e.g. SCU (safety control unit) algorithms

(with vehicle dynamics,

sensor signals

  • environment sensors

software hardware SCU signals crash data base .g. bus systems)

(with vehicle dynamics,

  • bject properties, …)

actuators (e.g. airbags, belt tensioners)

  • environment sensors
  • chassis sensors
  • car2X communication
  • GPS/navigation
  • laboratory crashes
  • simulated crashes
  • other relevant

situations (misuses)

trigger SCU signals

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks Realisation 1st Generation:

„CAN-Tester“

Testing of CAN based algorithm in an electronical control unit:

Data sources

  • Replay of CAN-Traces
  • Rest bus simulation
  • CarMaker simulation

CAN data manipulation

  • Cyclic Redundancy Check (CRC)
  • Message counter
  • Data Length Code (DLC)
  • Timeout
  • Data field (including init- and

error-values)

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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SLIDE 10

Motivations Test system Crash data feeding Outlooks Realisation 2nd Generation:

„Airbag HiL-system“

Safety Control Unit

programming, calibration, fault memory

crash parameters

  • velocity
  • coverage

analog current measurement SPI PSI5 bus systems (CAN, LIN, FlexRay) intelligent IO

Crash DB CarMaker

vehicle – environment

  • coverage
  • impact angle
  • …

crash signals

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks Example of continuous testing

Collision in front of traffic lights

New test system enables a continuous testing throughout all phases of driving: Normal Driving, PreCrash and InCrash

t0 = 0s v0 ≈ 40km/h t-2 ≈ -0,8s v-2 = 60km/h t-3 = -2s v-3 = 60km/h t-1 ≈ -0,75s v-1 = 60km/h

PreCrash Normal Driving InCrash t t t t

belt tensioner emergency brake airbag

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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SLIDE 12

Motivations Test system Crash data feeding Outlooks

Agenda / Contents

1 Motivations

Networking of automotive systems Integrated safety systems New test concept

2 Test system

Realisation Example of continuous testing

3 Crash data feeding

Selection and feeding Crash data scaling

4 Outlooks

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks Selection and feeding

Feeding test system with required crash data

1

Normal Driving / PreCrash:

  • SCU is being fed with vehicle dynamics

and environmental sensor data from IPG CarMaker simulation 2

InCrash:

  • looking for corresponding real driven

crash data and feeding into SCU

specify crash parameter by using simulation parameter crash trigger at collision time

Angular 30° 43 km/h

?

crash data base

real driven crash data

?

SCU

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks Crash data scaling

Artificial generation of crash data

What can we do if there are not enough or exactly the required real driven crash data in the database?

  • search for best fitting data set

⇒ inaccurate testing results

  • generate crash data by using FEM ⇒ not feasible in almost real time

⇒ generate data out of existing real driven crash data by scaling and

interpolation

angular 30° 32 km/h angular 30° 32 km/h angular 30° 51 km/h angular 30° 51 km/h

scaling / interpolation

angular 30° 43 km/h 10 20 30 40 50 60 70

  • 30
  • 20
  • 10

longitudinal acceleration [g]

front 30° right angle, v = 43km/h

reference signal generated signal 10 20 30 40 50 60 70

  • 40
  • 20

time [ms] integrated velocity [km/h] vreference vgenerated

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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SLIDE 15

Motivations Test system Crash data feeding Outlooks

Agenda / Contents

1 Motivations

Networking of automotive systems Integrated safety systems New test concept

2 Test system

Realisation Example of continuous testing

3 Crash data feeding

Selection and feeding Crash data scaling

4 Outlooks

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks

Next generation test system

project: VISAPS2

1 further development of current scaling and interpolation algorithm 2 realisation of secondary accidents simulation within CarMaker 3 further development of the new VISAPS test system:

  • implementation of AUTOSAR - requirements
  • ISO 26262 certification
  • integration of power measurement to measure the ignition circuit

currents exactly

4 test strategies

  • development of an efficient test strategy for highly networked

safety systems by combining different test methods such as maneuver-based or evolutionary tests

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks

If you have any questions, please do not hesitate to contact us:

Dipl.-Ing. (FH) Rudolf Ertlmeier Dipl.-Ing. (FH) Kathrin Sattler

Istitute for Applied Research (IAF) Istitute for Applied Research (IAF) Ingolstadt Universty of Applied Sciences Ingolstadt Universty of Applied Sciences Esplanade 10 Esplanade 10 85049 Ingolstadt 85049 Ingolstadt phone: +49 (0)841/9348-648 phone: +49 (0)841/9348-646 Email: rudolf.ertlmeier@haw-ingolstadt.de Email: kathrin.sattler@haw-ingolstadt.de

Dipl.-Ing. (FH) Andreas Raith

  • Prof. Dr.-Ing. Thomas Brandmeier

Istitute for Applied Research (IAF) Istitute for Applied Research (IAF) Ingolstadt Universty of Applied Sciences Ingolstadt Universty of Applied Sciences Esplanade 10 Esplanade 10 85049 Ingolstadt 85049 Ingolstadt phone: +49 (0)841/9348-723 phone: +49 (0)841/9348-384 Email: andreas.raith@haw-ingolstadt.de Email: thomas.brandmeier@haw-ingolstadt.de

Dipl.-Ing. Daouda Sadou Dr.-Ing. Christian Schyr

Continental Automotive GmbH IPG Automotive GmbH Siemensstraße 12 Bannwaldallee 60 93055 Regensburg phone: +49 (0)721/98520-43 phone: +49 (0)941/790-6280 Email: christian.schyr@ipg.de Email: daouda.sadou@continental-corporation.com

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems

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Motivations Test system Crash data feeding Outlooks

Thank you for your attention

  • R. Ertlmeier, K. Sattler, A. Raith, T. Brandmeier, D. Sadou, C. Schyr

Maneuver based testing of integrated vehicle safety systems