【作者】 黄晓燕；

【导师】 罗建；

【作者基本信息】 西北工业大学 ， 机械电子工程， 2007， 硕士

【摘要】 以虚拟仪器为代表的新型测量仪器改变了传统仪器的思想，它充分利用计算机强大的软硬件功能，把计算机技术和测量技术紧密结合起来，在测试领域得到了广泛的应用。本文将虚拟仪器这项新的技术应用在对声学设备的测量中来，使得较之传统的测量方法更加的简便和高效。 首先从需要解决的问题和研究现状出发，分析了虚拟仪器技术的国内外研究现状。通过探讨自动测试系统的发展历程，分析了最先进的第三代自动测试系统—虚拟仪器自动测试系统的一般结构、特点及关键技术。 对测试对象—水声换能器的测量参数、校准方法进行了对比分析，选取了比较法作为测试方法，并对测试数据的处理方法进行了较为深入的研究。 组建了基于GPIB总线的第二代自动测试系统和基于NI PCI-4551数据采集卡的第三代自动测试系统。以LabVIEW作为测试系统的软件开发平台，对系统测试软件进行了设计，实现了测试过程的模块化。 论文最后针对实际的水声换能器进行了测试，对测试结果进行了认真分析。对于系统硬件的选择、连接方式，软件处理方式对测试结果的影响进行了较为深入的讨论。经反复测试证明测试系统的方案是可行和稳定的。更多还原

【Abstract】 Nowaday, a new type measuring instrument which was representatived by virtual instrument had changed the traditional mode. This new technology which was fully utilized the powerful function of computer software and hardware, deeply contacted the computer technology with the measure technology, merged computer and network technology together had been widely used in test field.This aritlce has applied this new technology in acoustic equipment test to improve the test efficiency .At the beginning of article, the development and research status about the automatic system had been disussed. The third generation automatic system based on virtual instrument of automatic system had been analyzed. Subsequently, the ordinary structure 、 trait and key technology has been discussed.As for the special test object-hydrophone, the test parameter and adjust method had been compared and analyzed, the article test theory had been selected out and the software algorithm had definitude.The GPIB bus controlled automatic system and the virtual instrument automatic system based on NI PCI-4551 data acquisition card had been constructed. Using the Lab VIEW as the software developing platform for the system, achieved the test process modularize and the function of every part of the system.The test result had also been analyzed in the end. Some analysis also been did on the error dispose and the system stability.Meanwhile, the research had been done in the selection of hardware section, the line joint manner and the factor which may infection the test result and so on. some research had also been done in test data disposing.the repeating test result of the hydrophone has show that the automatic system has high steady and reliable performance.更多还原