基于USB的箭载数字量变换器测试仪设计

Design and Achievement of Rocket High-speed Test-Bench Tester Based on USB

摘要:

为配合箭上某型号数字量变换器进行全面的性能测试,通过对数字量变换器性能指标以及各状态信号的分析,提出了基于USB接口的高速数字量变换器测试仪的设计方案；详细说明了系统各功能模块的实现方法,并对系统进行了实际的分析和测试；与以往测试仪器性能相比,该设计从硬件、软件及其工作模式方面都做了一些优化,明显提高了测试的精度;系统整体采用模块化设计方法,完成幅值8-10 V的计算机字信号以及幅值28 V的指令信号的传输,具有很强的通用性和可扩展性；在实际应用中,该测试仪设计可行,能全面检测数字量变换器的性能。

Abstract:

Through analyzing the function and state signal of Digital converter, this paper brings forward a design of Digital converter test-bench that based on USB interface, which is used to test the comprehensive performance of Digital converter. The detailed implementation method of each part and practical tests are presented. Compared with traditional tester, this method is optimized from both aspects of hardware and software to improve the precision of the test. By using the design method of module, the system accomplishs the transmission of 8-10V computer word and 28V instructed signal, and achieves powerful universality and extensity. In practical application, the design of the tester is feasible, and it can examine the digital converter performance entirely.