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详细阐述了基于VXI总线的多通道混合信号采集分析仪的设计原理,关键技术的实现途径。重点论述了模拟采集技术、数字采集技术、VXI总线接口和模块资源管理电路原理与设计,智能人机界面设计技术,自动测量、自动校准、自动刻度、FFT变换技术等。 相似文献
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A Rapid and Robust Diagnostic for Liver Fibrosis Using a Multichannel Polymer Sensor Array 下载免费PDF全文
William J. Peveler Ryan F. Landis Mahdieh Yazdani James W. Day Raakesh Modi Claire J. Carmalt William M. Rosenberg Vincent M. Rotello 《Advanced materials (Deerfield Beach, Fla.)》2018,30(28)
Liver disease is the fifth most common cause of premature death in the Western world, with the irreversible damage caused by fibrosis, and ultimately cirrhosis, a primary driver of mortality. Early detection of fibrosis would facilitate treatment of the underlying liver disease to limit progression. Unfortunately, most cases of liver disease are diagnosed late, with current strategies reliant on invasive biopsy or fragile lab‐based antibody technologies. A robust, fully synthetic fluorescent‐polymer sensor array is reported, which, rapidly (in 45 minutes), detects liver fibrosis from low‐volume serum samples with clinically relevant specificity and accuracy, using an easily readable diagnostic output. The simplicity, rapidity, and robustness of this method make it a promising platform for point‐of‐care diagnostics for detecting and monitoring liver disease. 相似文献
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在多参数控制系统中,控制信号由多路输入信道传输给控制单元。由于信道之间存在相互干扰,因而系统的输出受到影响。通过对输入信号的分离,去除信号之间的相互影响,恢复原始的控制信号,能够提高控制系统的性能。独立分量分析是一种盲源分离的方法,对其进行了简要介绍。用此方法对多参数控制系统输入信号进行分离,恢复出原始控制信号。通过大量的仿真试验,验证了此方法的有效性。 相似文献
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