Based On The Highly Reliable Automated Test System In The Pxi / Cpci Bus

In the fields of industrial automation, measurement and telecommunication, the technologies of CompactPCI/PXI are being rapidly admited as the importance of standards, open characters and future compatibility being recognized by more and more people.This dissertation represents the design and implementation of a test system of some equipment which is part of a national key project with the use of CompactPCI/PXI technology. The design methods of real-time automatic test system with high reliability are discussed. The system is composed of several design modules and the features of these modules are particularly expatiated.Firstly, the test principles of the quipment and the organization of the test system are introduced. There are five test modules in this system: ARINC429 Communicate Module, BMK Interface Module, CPU Simulate Module, Frequency&code Module, and Power Monitor&control Module.Secondly, the CompactPCI/PXI bus technology is presented. Some features of the bus technology which are different from the original PCI bus are enumerated such as hot swap and the instrumentation bus concepts.Then several different ways to implement the bus interface are discussed.Thirdly, the implementation of the ARINC429 Communicate Module is particularly introduced to demonstrate how to combine embedded microprocessor and dual-port RAM together to construct an intelligent CompactPCI/PXI bus interface.Fourthly, the design of Power Monitor&control Module is analysed to give an example to illustrat the isolation technique which is used to guarantee high reliability and accuracy.Lastly, a summary is done in the end of the article. Some disadvantages in our design are cited and the corresponding improvements are given.The test system has already been in operation, and the praise of its reliable qualities can be heard. In a word, the test system we developed is of great value.