Aim and Ideas

Research carried out at the HIL Laboratory looks into methods of testing environmental-sensor-based driving functions. The objective is to perform part of the testing procedure in a laboratory environment, so as to reduce the cost and time expenses of the test. It also enables more attention to be given to safety-critical test cases, than, for instance, in real-life driving tests. One concrete objective is to improve radar target simulators to enable them to differentiate between such targets as lorries, cars, pedestrians, etc. There are also plans to develop a camera simulation system with direct frame transmission to the controller under test. Moreover, a method is being developed to allow benchmark analysis of sensors and data fusion algorithms.  In addition, the development of a distributed test environment planned with other laboratories, in which various participants in a simulation are connected via a LAN. The degree of realism varies all the way from pure simulation to real-life vehicles.

 

 

Equipement

  • NI PXI system (NI PXIe-1085)
  • 16 analog inputs
  • 16 analog outputs
  • 8 relay outputs
  • Wheel speed generator, 4 channels
  • 6 CAN interfaces
  • 4 FlexRay interfaces
  • 2 LIN interfaces
  • 8 PSI5 channels
  • 16 PWM input channels
  • 16 PWM output channels
  • 1 Gb/s Ethernet
  • Freely programmable FPGA
  • Frequency generator
  • Oscilloscope
  • Resistance simulator, 8 channels
  • 8 voltage measurement channels (-75 – 75V)
  • 8 current measurement channels (0 – 50A)
  • GPS simulator (NI USRP RIO)
    • 2 NVIDIA Drive PX2
    • 1 dSPACE MicroAutoBox II
    • 4 desktop workstations with Ubuntu as operating system
    • 1 laptop workstation with Windows 7 as operating system
    • 1 HIL system workstation with Windows 7 as operating system
      • Soldering station
      • Mains plug
      • Integrated multimeter
      • Integrated laboratory power supply unit
      • Oscilloscope


        • 55“ screen for presentations
        • Conference table with six places

          Example Applications

          The HIL system is equipped with all common bus interfaces currently employed in the automotive field (CAN, LIN, FlexRay) with which complex restbus simulations can be generated. The open NI PXI system makes it possible to integrate new future standards in the system, such as BroadR-Reach Ethernet.

          The real-time VeriStand (National Instruments) environment enables – by way of MIL and SIL
          testing – the integration of software components from different sources (such as MATLAB, Simulink models, C-Code, LabVIEW, etc.); these may be linked to each other in any way or directly connected to the inputs and outputs of the HIL system.

          Driving simulation can be employed to help with testing functions that are dependent on the driving situation. In CARISSMA HIL, driving simulation is realised using both CarMaker (IPG Automotive GmbH) software and VTD (VIRES Simulationstechnologie GmbH). Driving simulation generates all the ego vehicle data that is required to drive the subsystem. It supplies the data for test bus simulation, which is transmitted to a controller via CAN, LIN, FlexRay and in future also Automotive-Ethernet. In addition, the data can be used to feed models and software modules on the real-time computer of the HIL system. Conversely, it is also possible to feed the output of the subsystem being tested by way of a closed-loop circuit through the HIL system to the driving simulator and to change the latter’s simulation parameters. All connected components, (e.g. driving simulator, controllers, software modules, sensors, etc.) are interconnected and, where appropriate, configured using the Veristand (National Instruments) software.

          The CARISSMA HIL system is fitted with a freely programmable FPGA unit, which, among other things, enables the simulation of proprietary controller interfaces. The FPGA can also be flexibly employed to generate rarely used sensor signals or to expand existing interfaces without the need to provide a dedicated card.

           

           

          A GPS simulator (NI USRP RIO) is integrated in the CARISSMA HIL system.  This enables the testing of the ‘Determine Location’ function with simulated GPS signals, as required, for instance, by navigation systems or other position-dependent assistance and safety functions. The GPS simulator generates the signals of up to 12 satellites, whereby the user is able to define the power level of each simulated satellite. It is also possible to generate separate movement profiles for the satellites. It is also possible to simulate the typical kinds of signal interference occurring with GPS satellites that can lead to positional inaccuracies in terrestrial receivers.

          Team

          Research assistant CARISSMA
          Sanjana Biank, M.Eng.
          Phone : +49 841 9348-3363
          Room : W101
          Fax : +49 841 9348-6440
          E-Mail :
          Research assistant CARISSMA
          Pascal Brunner, M.Sc.
          Phone : +49 841 9348-6422
          Room : W101
          Fax : +49 841 9348-996422
          E-Mail :
          Test Engineer CARISSMA - HiL-Lab
          Sebastian Edler, M.Sc.
          Phone : +49 841 9348-3358
          Room : W101
          Fax : +49 841 9348-997173
          E-Mail :
          Research Assistant CARISSMA
          Dipl.-Ing. Fabio Reway
          Phone : +49 841 9348-6462
          Room : W101
          Fax : +49 841 9348-996462
          E-Mail :
          Research Assistant
          Georg Seifert, M.Sc.
          Phone : +49 841 9348-6260
          Room : P302
          Fax : +49 841 9348-996260
          E-Mail :