The aim of this test bench is to validate electronic measurements and audio signals. The system must be enough flexible to permit the test of several models of car radio.

Banc de test d'autoradio

Radio car validation bench

Hardware Technology

The bench is composed of:

  • an industrial PC with:
    • a test sequencer, its measurement libraries and instruments drivers
    • a VAN bus PCI card
    • a bar code reader .
  • a conversion RS-232 / I2C module
  • an audio AM/FM generator GPIB
  • an audio analyser GPIB
  • a PXI chassis containing:
    • a MXI3 card
    • a DIO card
    • two switches matix cards
    • a multimeter card
    • a GPIB card

Software Technology

Operating software : MS Windows XP
Measurement software : NI LabWindows/CVI
Test Sequencer : NI TestStand
Reports : MS Excel

How does it work ?

The operator connects the car radio to the interface which is connected to the test bench. He identifies the unit to be tested with the car radio bar code. The sequence test the sound quality, the consomation, the EEPROM software and the radio reception. At the end of the tests, a Excel formated report is generated.

The modular material and software architecture allows the component generisation and thus a change robustness gain.

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.

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.