Hardware-in-the-Loop (HiL) simulation solution

Paving the way towards automated driving with scalable, cost- and time-efficient testing of ECU software functionality.


Testing ECUs (electronic control units) plays a crucial but cost intensive and extensive role for successfully developing automated vehicles.

With our Hardware-in-the-Loop (HiL) simulation solution, you can test the functions, system integration, and communication of ECUs in a simulated environment under realistic conditions to validate your ECUs and their functionality.

Built with modular, proven-in-use hardware and software, you can profit from a scalable system and high processing power that allows the parallel replay of multiple sensor streams.

The right architecture for HiL testing

A recent blog post by Amazon Web Services (AWS) describes in detail, how test drive log data is ingested and stored in Amazon S3 for testing ECU functions in EB’s HiL server farms. By enabling OEMs to orchestrate and deploy large HiL server farms working in parallel, the time needed to validate thousands of miles of drive time is reduced significantly.

> Read the article


Improve product quality

Safely test any given situation in a simulated environment and foster quality control. Our solutions are compliant with the latest AUTOSAR version, meeting the highest criteria of mass production software.

Maximum efficiency

Validate the ECU functionality through processing real driving scene data and shorten the time to market despite more and more complex vehicle network architectures. Profit from high processing power that allows the replay of multiple sensor streams such as camera, LIDAR, or vehicle bus communication.

High level of safety through reproducibility

Simulated tests are easy to reproduce and allow for the detection of errors already during predevelopment, playing a crucial part in bringing vehicles into mass production. Our proven-in-use rest bus simulation plays a major part in this task.

Ready to use, customizable turnkey solutions

A solution built from interlocking and proven-in-use hardware and software products, ready to use right from the start. Easily customizable with specific add-ons.



Key features

  • Comprehensive solution that allows for integration of third-party software
  • Modeling tools that are based on industry standards
  • Covers test and simulation scenarios within ADAS and automated driving, from single-component tests to vehicle network testing
  • Scalable system and processing power that allows replay and processing of multiple sensor streams (e.g. for ADAS/AD)
  • Replay raw data and all relevant vehicle bus communication data synchronously
  • Built with modular, proven-in-use hardware
  • High-precision data logging with EB Assist CAR Box hardware variants EB 9101 for maximum computing power and EB 9200 created especially for rough environments
  • EB Assist ADTF development environment with a set of toolboxes for replaying driving scenes and managing the data and workflow of HiL installations
  • Farm management software to manage multiple HiL systems with interfaces to data centers such as Amazon S3
  • Comprehensive driving scene database
  • HiL control-toolbox
  • Proven-in-use rest bus simulation firmware and software (EB 5200)
  • Support of latest AUTOSAR version


HiL use cases

  • Open-loop HiL processing (reinjection)
    • Complete solution with EB Assist hardware and software
    • Automated replay of all relevant sensor data with high time precision to ECU
    • Capturing of ECU responses including debug data
    • Potential integration of customer components inside the HiL (e.g. for visualization or post-processing)
  • Rest bus simulation
    • BroadR-Reach Ethernet
    • Fully automated HiL system in cluster network (HiL farm)
    • Data export for KPI calculation
  • Automated HiL system in a cluster network
  • Data export for calculating KPI
  • Recapturing of data


Hardware-in-the-Loop Infosheet

Hardware-in-the-Loop test solutions by EB

EB offers customizable and scalable HiL test solutions to suit your specific needs.


Related products

EB Assist ADTF

Leading development tool for ADAS and automated driving. The software cornerstone for your HiL solution.

EB Assist Test Lab

Efficiently manage terabytes to exabytes of driving scenes, bringing automated driving to series production faster

EB Assist ADTF toolboxes

Add-ons and extensions to meet your specific test and validation needs.

EB Assist CAR Box

High-performant and reliable automotive PC systems to suit your testing and validation needs, the basis for powerful HiL systems.

EB Assist bus tools

Broad set of high-performant modular I/O slot cards, I/O interface modules, and simulation tools for measurement and simulation of bus data.

EB Assist Busmirror

Our tool for testing ECU software during the implementation stage, both for real hardware and on PC.

Related services

ADAS and automated driving engineering services

Innovative engineering methods, sophisticated processes, proven standards worldwide.

Validation engineering services

Comprehensive services for embedded systems, automated driving, connected solutions, and more.

EB Assist HiL training

Learn how to efficiently test the functions, system integration, and communication of ECUs in a simulated environment under realistic conditions to validate your ECUs and their functionality.

Software for the automotive industry