Abstract:

This article is based on a PXI bus, PXI bus, introduced in line with the standards dedicated multifunction board. PXI multifunction board dedicated primarily to complete a variety of signal input, output and control functions, including A/D converter, D/A converters and I/O function modules such as switch circuit, can effectively function on the closedloop control module, fully able to meet a wide range of systems and a variety of input and output signal processing requirements. Used in vehicle performance testing instrument systems and combined with CCD image acquisition and DSP processing system，it has the advantages of good realtime detection, high precision, high universality, fullfeatured, costeffective, easy to operate and so on.

Key words: vehicle test, PXI bus, image acquisition, A/D converter, combination of detection system, performance test