Electronic Control Modules are subsystems consisting of CPUs and assorted signal inputs and outputs dedicated to controlling a component within the vehicle (cars, trucks...).
The aim of this system is to check that all ECM actions are correct, conforming to the specifications. It performs design validation.
It is a development bench, helping technicians and developers during design and developement phases.
Schéma du système
System Diagram

Hardware Technology

The bench is composed of :

  • GPIB Power supplies
  • CAN bus
  • Custom power switches
  • Custom powers charges
  • Industrial PC computer containing :
    • measurement software
    • PCI matrix card
    • PCI acquisition card
    • PCI multimeter card
    PCI signals generator

Software Technology

Operating software : MS Windows XP
Measurement software : NI LabVIEW, NI DAQ

How does it work ?

Using the measurement software, the operator selects stimuli to be sent to the ECM. Each ECM response is adapted by the bench, acquired by the acquisition card and computed by the measurement software. The results are displayed to the computer screen.

What is LabVIEW?

LabVIEW LabVIEW is a development environment specialized in industrial and scientific applications. Its uniqueness is that it relies on the G language, created by National Instruments, which is fully graphical. It can create complex software, while facilitating the programming and thus reduce development time. Through its library of functions for data acquisition, instrumentation, analysis of mathematical measures, but also through the rapid creation of GUIs and coding simplified, the engineer has more time to focus on specific functions of the instrumentation communication and measurement analysis.

LabVIEW is particularly suitable for developing control, supervision, test and measurement systems.

What is LabWindows/CVI?

LabWindows/CVI LabWindows is a development environment in C language for the implementation of test systems, measurement and instrumentation. Thus, it is possible to enjoy both the power and precision of the C language but also libraries of functions for instrumentation and signal processing from National Instruments.

With LabWindows / CVI, you can develop:

  • software for Windows (exe) or UNIX Linux,
  • libraries (DLL, Active X,. NET),
  • instrument drivers,
  • on embedded targets,
  • on real-time target.

What is Measurement Studio

Measurement Studio pour Visual Studio C++, C# et Visual Basic These are libraries of graphical controls and functions for the rapid development of industrial or laboratory solutions containing .NET technology used directly in Visual Studio, to have power tools National Instruments software and instrumentation functions for C++ , C# or Visual Basic.
Read more...

What is TestStand

TestStandTestStand is a instruction sequences engine and a development environment for creating a test sequencer evolved several common test for different products. We have a generic software that loads, as the test product, sequences specifying actions, tests and tolerances, and components (such as DLLs) for communication with the hardware.