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自动测试系统(Automatic Test System)是指能够自动进行测量、处理数据,并以恰当方式显示测试结果的系统,该系统极大地提高了劳动生产率,因此,有关自动测试系统软件技术通用性的研究也越来越受到重视。本文主要对自动测试系统软件技术通用性的现状进行了介绍和分析,并对该自动测试系统通用性的软件实现进行了探讨究。 相似文献
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模块化及标准化是现代自动测试系统的发展方向。本文介绍了将数据库技术引入测试系统 ,实现了五个不同测试对象的统一编程而不考虑其测试流程的不同 ,将检测结果由系统自动记入数据库。这将有助于实现测试系统软件的模块化 ,提高系统的可维护性。 相似文献
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在进行长时间可靠性测试时,为了实现对汽车音响功率放大器的自动连续监测,设计了汽车音响功放自动测试系统.整个系统以音频分析仪和控制模块及负载匹配单元为核心,通过自行开发的功能强大的控制及测试软件,自动实现了对车载音响功放关键性能参数的连续监测及数据分析.实际应用结果表明,该自动测试系统完全达到了设计目的,性能可靠,技术先进,成本低,有很好的应用前景. 相似文献
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介绍了信号发生器自动测试系统的组成、功能以及实现方法,着重介绍了软件系统的结构、设计思路及设计的难点.该自动测试系统的软件基于Visual Basic 6.0编写,并通过GPIB口实现与仪器间的通信,自动完成数据处理及生成文档.该测试系统实用、高效、可靠. 相似文献
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模块化及标准楷是现代自动测试系统的发展方向。本文介绍了将数据库技术引入测试系统,实现了五个不同测试对象的统一编程而不考虑其测试流程的不同,将检测结果由系统自动记入数据库。这将有助于实现测试系统软件的模块化,提高系统的可维护性。 相似文献
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A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling. 相似文献
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An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a
rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate
agreement is demonstrated between the derived relations and experimental data. 相似文献
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水三相点是开尔文热力学温度的唯一基准点,也是ITS-90国际温标重要的定义固定点。因此,水三相点不确定度分析对整个温标的建立、温度量值传递起着至关重要的作用。近3年来,中国计量科学研究院研制出一系列高质量的水三相点容器,加强了水三相点的研究,为不确定度的分析提供了更为可靠的实验依据。同时,不确定度的分析也是客观评价新研制容器性能的一个重要指标。因此,根据实验结果对新研制容器所复现的水三相点进行了不确定度评定。评定结果表明,其扩展不确定度为0.16mK(k=2.69,P=0.99)。 相似文献
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Liebert A Wabnitz H Grosenick D Möller M Macdonald R Rinneberg H 《Applied optics》2003,42(28):5785-5792
A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue. 相似文献
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