Automatic Test System frequently relate to access database based on virtual instrument. Now, LabWindows/CVI platform is generally adopted to develop ATS, according to the problem that the platform low-efficiently access database in ATS, a design method of database access technology based on network communication is proposed. The article simply analyses database access technology in VC+ +,and get a database access model and realization, and use the Network Communication function of the LabWindows/CVI and VC++ to build the Data Transmission Model, and realize the Control Logic and the way of interprocess communication of the ATS. The results of experiments show that the method has been better stability in actual application, and can improve database access efficiency about 100 times in ATS.%基于虚拟仪器的自动测试系统(简称ATS)一般都会涉及到对专家诊断等数据库的访问;目前,开发ATS系统较为流行的工具常采用NI公司的LabWindows/CVI平台,针对该平台访问数据库效率低的问题,提出了一种基于网络通信的数据库访问解决方案:简单分析了几种常用数据库访问技术,并给出了VC++平台基于ADO技术的ATS数据库访问模型及其实现方法,介绍了ATS数据库网络通信的访问模型、控制逻辑以及ATS各进程之间的数据通信方法;试验结果表明该方案在应用中具有较高的稳定性,能提高ATS数据库的访问效率100倍左右.
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