The Implement Of Interface In ATS Based On ATML

Automatic test system is playing a greater role in the field of aviation, aerospace and national defense after experiencing the development from dedicated test systems to modular automatic test system and having made great progress.But the application of universal automatic test system still remains limited,which has some deficiencies of high costs of development and maintenance,vacuity of interoperability between systems,being incompatible of the diagnostic testing new technologies and the existing system.In view of the above problems,this paper follows the signal test definition according to the standard of IEEE1641,describes the test requirements and resources with a signal,which allows the resource management and distribution auto run on the basis of that needs of the test signal(test capability)match with description of signal and resources(incentive capability),and then integrates the system through interchangeable virtual instruments signal interface and codes the test program based on signal.At the same time,ATML(Automatic Test Markup Language)is used to save the information of IEEE1641 signal,system configuration and test results and so on,therefore promote the information sharing and seamless interaction ability among the system components,different test systems,test systems and the external environments and enhance the development of the test procedure efficiency.Through the above three technologies,problems of the interoperability of equipment and reusability and portability of test procedures set are fundamentally solved.The main work of this paper is as follows:(1)According to the XML-based signal description standard of STDBSC schema,STDTSF schema,STDTSFLib schema released by the ATML Working Group,a visual signal integrated editor is designed on the basis of the STD(Signal Test Definition)layered model and signal description model given by IEEE1641.(2)At the same time,a description for equipment function on the basis of the study of Capabilitics Draft released by ATML Working Group is given.(3)According to an XML-based description standard of TestDescription schema given by the ATML Working Group,Actions composing a test operation sequence are analyzed and a method of parse for operating sequence is presented.(4)Likely,according to an XML-based description standard of TestDescription schema given by the ATML Working Group,the composition of Test and TestGroup is investigated and the related implementation process is given.(5)To use IVI(Interchangeable Virtual Instrument)drivers in the test system for achieving the exchange of equipment,a system must first be configured to communicate with specific drivers.This paper gives specific examples to explain how to amend the instrument configuration information of interface addresses,driver paths,initialization information and simulation and state inquiring with the third-party tools MAX(Measurement and Automatic Explorer).(6)Finally,the implementation of ATS software is introduced and the test results are analyzed.At present,there are two ways for the development of ATS.One is generic software,such as Microsoft's Visual C#,Visual Basic and Visual C++,etc。The other is professional graphical programming software,such as HP's VEE, NI's Lab View and Lab windows/CVI.In our subject,we use C#.