计算机控制系统中显示画面设计中的几个问题

本文结合实际例子，提出计算机控制系统中显示操作画面设计中应遵循的几个原则，并对实际的图进行了对比说明，同时简要介绍了报警画面的设计原则。     

基于FPGA的多路视频合成系统的设计

研究一种基于FPGA的多路视频合成系统.系统接收16路ITU656格式的视频数据,按照画面分割的要求对视频数据流进行有效抽取和帧合成处理,经过视频编码芯片转换成模拟信号输出到显示器,以全屏或多窗口模式显示多路视频画面.整个系统无需操作系统,利用FPGA的高速并行处理的优势,应用灵活的多路视频信号的合成技术和数字图像处理算法,实现实时多路视频数据的显示.     

计算机控制系统中显示画面设计中的几个问题

本文结合实际例子，提出计算机控制系统中显示操作画面设计中应遵循的几个原则，并对实际的图进行了对比说明，同时简要介绍了报警画面的设计原则。     

在西门子系统上制作用户画面的方法简介

西门子的SINUMERIK 810D/840D/840Di系统是一个开放性的系统.所谓开放性,即允许机床厂家将自己的专有技术加入到系统当中,额外提供更适合特殊应用的显示界面、更方便的操作方式、更简单的加工参数调整等功能,并使其与标准系统无缝连接,从而将一个通用的系统变成专家系统,最终机床制造商借此赢得更大的市场.同时,在国外也有很多独立的解决方案提供者(Solution Provider)自己拥有如刀具监控、远程诊断等特殊技术,当这些技术应用到机床上时,往往需要与数控系统很好地配合才能工作.以往两者可能需要通过数字量或模拟量的输入/输出或者以通讯的方式进行数据交换,这样做的结果可能导致性能下降、安装/调试/操作复杂、难于维护等等问题.而现在这些厂商可以在西门子的开放平台上轻松地实现原有的功能,同时相关技术也更容易被最终用户接受,从而扩大市场份额.     

光柱显示技术

介绍直流等离子体光柱显示、ＬＥＤ光柱显示和液晶光柱显示等的工作原理及其优点。     

我国数显技术的应用与发展

机械行业使用的数显检测元件,有感应同步器、光栅、磁尺和容栅以及与它们配套的数显表组成各种数显测量系统。下面介绍我国数显技术的应用和发展。一、我国数显技术的发展现状我国数显技术的发展,大体上可分为三个阶段:从1960年到1972年,为准备研究阶段。当时清华大学、北京机床研     

简易型数字显示调节仪表与动圈式指示调节仪表的异同

简易型数字显示调节仪表与动圈式指示调节仪表的异同北京航空材料研究所宋洪才数字显示调节仪表发展速度非常快，目前国内不完全统计已有近两百个厂家生产。由于这种仪表功能全、可靠性高、读数直观，抗震性能好、工程价格比愈来愈低，逐步替代动图式仪表。这两类仪表都能...     

一种将数码管显示仪表改进为字符显示的解决方案

介绍了一种将现有LED数码显示转移为LCD字符显示的方案，以解决系统功耗太高的问题，并改善了人机界面，使信息显示符合人性化的需求；通过附加的单片机可以使原系统的功能更丰富，从而具有智能化仪表的特征。     

基于AutoCAD动态块在机械设计中的应用分析

探究分析AutoCAD动态块在机械设计中的实际应用。通过研究分析AutoCAD动态块的原理、操作原理、设计方法来探究AutoCAD动态块在机械设计中如何运用。AutoCAD动态块能够让图形不再是整体性变化,而是可以采取灵活的变化方法来进行变化,同时,其还具有智能性,能够快速根据用户需求来进行创建、管理、输出、共享等操作,应用于机械设计中能够大幅度提升设计结果的准确性及效率。AutoCAD动态块应用于机械设计中,能够帮助用户快速处理设计内容,提升设计结果的准确性与效率,值得在机械设计中进行大力推广。     

产品服务化供应链信息共享激励的博弈分析

产品服务化供应链信息共享能够减少企业之间的信息不对称所造成的不良影响。但是,企业参与供应链信息共享是需要付出成本的,可能会出现收益和投入不成比例的情况,造成部分企业不愿意参与供应链信息共享,这就需要建立一种激励机制来促使企业主动参与供应链信息共享。分析了产品服务化供应链信息不共享的原因,建立了产品服务集成商主导的产品服务化供应链两级合作的信息共享激励的博弈模型,并作均衡分析。然后,给出一些产品服务化供应链信息共享的激励策略。最后,通过实例说明了该模型的可行性。     

Measurement technique for the on-line detection of fines in a fluidized bed

In many industrial applications knowledge of the particle size distribution in a fluidized bed and in particular knowledge of the proportion of fines, is extremely important in order to maintain good fluidization quality in the bed, and to prevent too many particles from leaving the cyclones in the gas stream. A common method of monitoring particle size in a laboratory situation is to take a sample of particles from the fluidized bed and use equipment such as a laser diffraction device to analyze the sample, which can be a cumbersome procedure. The objective of this study was to develop an online tool to monitor the proportion of fines in a fluidized bed. A novel online measurement technique for the detection of fines in fluidized beds was developed, which includes a correlation that relates the triboelectric signal to the proportion of fines in the bed.     

改进型图像中的直线快速检测

为提高数字图像中的直线的检测速度,从时频域变换和空间域变换两个角度出发,提出了一种改进型数字图像中直线快速检测方法。首先,采用小波提升提取图像中的低频轮廓信息,抑制高频噪声。然后,对像素降低后的图像进行二值化处理;基于"两点确定一条直线"以及Hough变换过程中"图像空间中一条直线上的多个点对应参数空间中一个点"的原理,按照从局部到整体的检测顺序,将二值化后图像空间中的非零点映射到参数空间中具有较大存在概率的累加单元,而不是所有可能的累加单元。最后,对累加单元进行统计,以确定图像中直线的参数。利用该方法对一幅像素为128×128的数字图像进行直线检测,耗时为213ms。该方法有效地提高了数字图像中直线检测的实时性。     

Low-temperature bitumen stiffness and viscous paraffinic nano- and micro-domains by cryogenic AFM and PDM

In an effort to better understand the structure and behaviour of bitumen in low temperature, we describe the first use of cryogenic atomic force microscopy and phase detection microscopy to characterize bitumen nano‐ and micro‐structures. The results were interpreted in light of glass transition temperatures (T_gs) for bitumen fractions. The domains visible by microscopy, the catana, peri and para phases, were attributed to domains rich in asphaltenes, naphthene and polar aromatics, and saturates, respectively. Between ?10°C and ?30°C, atomic force microscopy images revealed topographic features not visible in atomic force microscopy images acquired at room temperature. According to phase detection microscopy and T_gs, the features were assigned to viscous unfrozen saturates. Upon cooling to ?72°C, unfrozen domains of 20–400 nm were observed. These domains were found in the paraphase rich in saturates and in the periphase rich in naphthene aromatics and polar aromatics. The findings indicate that new viscous domains form upon cooling to low temperatures owing to phase segregation, and that some bitumens are never entirely rigid in low temperatures.     

突破性产品是造型、技术和价值的有机结合

为了提高产品在市场中的竞争力,将产品造型、产品技术功能和目标用户联系起来,分析新产品在开发初期如何明确产品的价值所在,如何挖掘产品的潜在价值,最后对产品价值进行分析和评估,从而得到满足顾客需求和期望值的创造性产品。     

Application of an advanced maximum likelihood estimation restoration method for enhanced‐resolution and contrast in second‐harmonic generation microscopy

Second‐harmonic generation (SHG) microscopy has gained popularity because of its ability to perform submicron, label‐free imaging of noncentrosymmetric biological structures, such as fibrillar collagen in the extracellular matrix environment of various organs with high contrast and specificity. Because SHG is a two‐photon coherent scattering process, it is difficult to define a point spread function (PSF) for this modality. Hence, compared to incoherent two‐photon processes like two‐photon fluorescence, it is challenging to apply the various PSF‐engineering methods to improve the spatial resolution to be close to the diffraction limit. Using a synthetic PSF and application of an advanced maximum likelihood estimation (AdvMLE) deconvolution algorithm, we demonstrate restoration of the spatial resolution in SHG images to that closer to the theoretical diffraction limit. The AdvMLE algorithm adaptively and iteratively develops a PSF for the supplied image and succeeds in improving the signal to noise ratio (SNR) for images where the SHG signals are derived from various sources such as collagen in tendon and myosin in heart sarcomere. Approximately 3.5 times improvement in SNR is observed for tissue images at depths of up to ～480 nm, which helps in revealing the underlying helical structures in collagen fibres with an ～26% improvement in the amplitude contrast in a fibre pitch. Our approach could be adapted to noisy and low resolution modalities such as micro‐nano CT and MRI, impacting precision of diagnosis and treatment of human diseases.     

基于多Agent的虚拟企业调度研究与实现

针对虚拟企业制造环境的不确定性、动态性和复杂性，运用多Agent技术实现生产调度系统的反应性和智能性．构建了虚拟企业生产调度系统体系结构；通过Agent能力匹配来实现任务分解；采用基于合同网的协商和多属性决策来解决虚拟企业调度问题中的任务分配和协作，利用集成的优化算法来自动处理调度优化问题，并进行了原型系统的开发。     

The cytoskeleton in fish melanophore melanosome positioning

Melanophore melanosomes organelles can be regulated to move and locate correspondingly to many other different organelle types. Comparing lessons from analysis of a specific melanosome distribution can, therefore, contribute to the understanding of distribution of other organelles, and vice versa. From such data, it is now generally accepted that microtubules provide directed long-distance movement, while cell peripheral movements include microfilaments. In fish melanophores, both actin and dynein exhibit counter-forces to the kinesin-like protein in maintaining the evenly dispersed state, while actin and kinesin exhibit counter-forces to dynein in many other systems. Lessons from elevating cAMP levels indicate the presence of a peripheral feedback regulatory system involved in maintaining the evenly dispersed state. Studies from dynein inhibition suggest that the kinesin-like protein involved in fish melanosome dispersal is regulated in contrast to many other systems. One would further expect melanosome transport to be regulated also on actin/myosin, in order to prevent actin-dependent capture of melanosomes during the microtubule-dependent aggregation and dispersion. General findings will be discussed in comparison with positioning and movement of other organelle types in cells. Finally, recent data on melanosome-dependent organising of microtubules show that dynein is involved in nucleating microtubules extending from melanosome aggregates in melanophore fragments.