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毕业设计外文翻译,高手请进,感激不尽!

翘Ki8Cgjm0 2018-11-22 17:28:40 396  浏览
  • ResearchonIntegrationofCoalMineMonitoringandControlSystemwithFieldBusControlSystemAbstract:AccordingtotheconstructionofcurrentcoalminemonitoringandcontrolsystemsinChina,t... Research on Integration of Coal Mine Monitoring and Control System with Field Bus Control System Abstract:According to the construction of current coal mine monitoring and control systems in China,the paper proposes three kinds of applicable schemes of integrating PLC and DCS systems with field bus technology to digitize the system and to improve the flexibility and extent of the system.Essentially,the paper introduces the integration of FCS on I/O layers.Based on a real coal mine safety-monitoring and control system applied with a CAN field bus,the major technology of system relays and extensions is discussed.We believe that one of the most applicable methods is currently replacing the connection between function-stations and field-sensors with a CAN bus on I/O layers for system integration. Key words:monitor and control;field bus control system;CAN;integration 1 Coal Mine Monitoring and Control System and Field Bus Technology As one of the most important methods to improve modern management and production efficiency in coal mines,monitoring and control technology have been widely adopted to maintain safety in coal production.Taking advantage of foreign technologies from the 1980’s,coal mine monitoring and control systems have expanded rapidly in China.At present, automatic control has come into use in most large-scale coal mines,which greatly improved production efficiency and safety and lowered costs. In China,most sub-systems of coal mine systems work independently.They follow a DCS system structure of three layers(center layer,sub-station layer and sensor layer)which consists of a tree to-pology.They are composed of sensors,sub-stations on or under the ground,center stations,multiple controllers and display terminals(Fig.1).They work with analogue signals of 4–20 mA or 200–1000 Hz. Each coupled cable can only act as one line for transmission[1]. Currently control networks have been developed for digitalization and networking.Because traditional analogue signals of 4–20 mA or 200–1000 Hz can only carry simple measurement information and con-trol signals,the communication rate is restricted. Therefore,it is necessary to digitalize and network the entire monitoring and control system. Fig.1 Traditional Structure of Coal Mine Monitoring and Control System 展开

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毕业设计外文翻译,高手请进,感激不尽!
ResearchonIntegrationofCoalMineMonitoringandControlSystemwithFieldBusControlSystemAbstract:AccordingtotheconstructionofcurrentcoalminemonitoringandcontrolsystemsinChina,t... Research on Integration of Coal Mine Monitoring and Control System with Field Bus Control System Abstract:According to the construction of current coal mine monitoring and control systems in China,the paper proposes three kinds of applicable schemes of integrating PLC and DCS systems with field bus technology to digitize the system and to improve the flexibility and extent of the system.Essentially,the paper introduces the integration of FCS on I/O layers.Based on a real coal mine safety-monitoring and control system applied with a CAN field bus,the major technology of system relays and extensions is discussed.We believe that one of the most applicable methods is currently replacing the connection between function-stations and field-sensors with a CAN bus on I/O layers for system integration. Key words:monitor and control;field bus control system;CAN;integration 1 Coal Mine Monitoring and Control System and Field Bus Technology As one of the most important methods to improve modern management and production efficiency in coal mines,monitoring and control technology have been widely adopted to maintain safety in coal production.Taking advantage of foreign technologies from the 1980’s,coal mine monitoring and control systems have expanded rapidly in China.At present, automatic control has come into use in most large-scale coal mines,which greatly improved production efficiency and safety and lowered costs. In China,most sub-systems of coal mine systems work independently.They follow a DCS system structure of three layers(center layer,sub-station layer and sensor layer)which consists of a tree to-pology.They are composed of sensors,sub-stations on or under the ground,center stations,multiple controllers and display terminals(Fig.1).They work with analogue signals of 4–20 mA or 200–1000 Hz. Each coupled cable can only act as one line for transmission[1]. Currently control networks have been developed for digitalization and networking.Because traditional analogue signals of 4–20 mA or 200–1000 Hz can only carry simple measurement information and con-trol signals,the communication rate is restricted. Therefore,it is necessary to digitalize and network the entire monitoring and control system. Fig.1 Traditional Structure of Coal Mine Monitoring and Control System 展开
2018-11-22 17:28:40 396 0
求善良的人帮我翻译一篇外文 感激不尽
t treatment, seeding by 3 wt%ZrO2 as glass-composite and pulverization affected the amount, size and distribution of crystalline phases. SEM-EDS and XRD results revealed that crystalline phases presented in the devitrified glass–ceramic ... t treatment, seeding by 3 wt%ZrO2 as glass-composite and pulverization affected the amount, size and distribution of crystalline phases. SEM-EDS and XRD results revealed that crystalline phases presented in the devitrified glass–ceramic were barium aluminate (BaAl2O4), barium aluminosilicate (BaAl2Si2O8) possibly with boron associated in its crystal structure, and barium zirconate (BaZrO3). CTE of the devitrified glass–ceramic was in the range of (10.1–13.0)  106 C1. Good adhesion was obtained both in the cases of glass and devitrified glass–ceramic with YSZ and AISI430 stainless steel. Interfacial phenomena between these components were discussed.  2008 Elsevier B.V. All rights reserved. 1. Introduction Solid oxide fuel cells (SOFCs) are a power source producing electricity via an electrochemical reaction. SOFCs have high energyconversion efficiency [1] and are environmentally friendly due to their low pollutant emission [1–3]. Electrochemical reactions in SOFCs occurred at the temperature range of 600–1000 C and required both oxidizing and reducing atmosphere [4]. Planar SOFCs are a type of SOFCs under development. An important consideration in planar SOFCs fabrication is hermetic sealing of all SOFC components, which are solid electrolyte, metallic interconnect, anode and cathode [5]. The seals must be thermochemically and mechanically compatible with other SOFC materials, should have high electrical resistance, and must be stable and long time durable under operating condition under H2 and H2O atmosphere [4,6]. Rigid sealing using glasses or glass–ceramics is a promising option 展开
2010-05-09 13:55:14 387 1
化学高手请进
明天我要月考、考的是九年下人教版的、主要是酸碱盐那块、可是我因生病九下基本没学、哪位高人给整个提纲让我复习下啊
2010-03-25 08:37:14 340 2
外文翻译《建筑的组成部分》
StructuralSystemstoresistlateralloads这篇外文的作者是谁我想知道他的作者是谁... Structural Systems to resist lateral loads 这篇外文的作者是谁 我想知道他的作者是谁 展开
2009-04-01 00:46:28 352 2
关于等离子切割机,高手请进
关于等离子切割机,高手请进请问用来固定这个割枪气管的塑料配件叫什么名称?多谢答疑
2018-06-28 02:59:35 242 1
物理高手请进来一下,好么?
请帮我写1份实验报告可以么? 格式: 一、实验目的 二、实验仪器[ 能给个图的再+10分 ] 三、实验原理 四、实验步骤[ 详细+正确的再+20分 ] 五、结论 [ 认真回答+详细者再+20分 ] 谢谢,分我一定会给的,帮帮我好吗.?
2009-07-30 11:44:07 359 3
基于单片机的气体传感器的外文翻译。要来自外文期刊。
论文需要。求各位大神帮忙。感谢感谢!小的跪下 了
2018-12-09 10:18:23 310 0
翻译~~高手进
汉族占全国人口的94%,是主体民族,而且“汉语”就是“中文”。ZG有56个民族,如果要找出一个Z能代表整个国家的东西,shou选自然是占主体汉服。... 汉族占全国人口的94%,是主体民族,而且“汉语”就是“中文”。ZG有56个民族,如果要找出一个Z能代表整个国家的东西,shou选自然是占主体汉服。 展开
2007-12-02 03:24:07 604 2
数字语音采集和频谱分析外文翻译
 
2016-06-02 08:25:15 328 1
高手帮忙翻译!!+100
虚拟仪器是一种新的测试与测控技术,近年来得到了迅速发展,基于虚拟仪器的机器视觉系统就是其领域的一个重要分支。本文围绕基于虚拟仪器的机器视觉有关理论和其在玻璃瓶口缺陷检测中... 虚拟仪器是一种新的测试与测控技术,近年来得到了迅速发展,基于虚拟仪器的机器视觉系统就是其领域的一个重要分支。本文围绕基于虚拟仪器的机器视觉有关理论和其在玻璃瓶口缺陷检测中的具体应用进行了研究。 针对玻璃瓶这一对象检测的高精度、高准确度、实时性的特点,本文提出了一种基于LabVIEW的数字图像处理检测方案,并在设计过程中解决了一系列关键问题:利用硬件和软件的编程实现了对玻璃瓶口的缺陷监测;使用阈值进行图像的二值化处理,并进行开启、闭合以增强图像质量;使用Vision Builder AI对有故障的图像进行故障特征识别; 通过理论研究与实验,证明了本文所提出的玻璃瓶口缺陷监测方法是有效和可行的,为其机器视觉检测的进一步研究和开发奠定了很好的基础 请用专业术语,不要用在线翻译。谢谢····好可以多加分 展开
2008-06-10 11:03:29 394 3
翻译翻译,请高手帮我翻译一下这个说明
Followthesysteminstallationinstructionscarefullyandinthespecifiedorder.ThesoftwaremustbeinstalledonthecomputerbeforeconnectingtheUSBcable.2.1FacilitiesRequirementsFacilit... Follow the system installation instructions carefully and in the specified order. The software must be installed on the computer before connecting the USB cable. 2.1 Facilities Requirements Facilities requirements for the alpha-SE system are listed in Table 2-1 and the system dimensions are given in Fig. 2-1. As shown in Fig. 2-2, the alpha-SE tool requires a clear work area of 20 by 18 inches (500 by 460 mm), excluding the operator computer. 2.2 Unpacking the Hardware Opening the Shipping Container Move the alpha-SE shipping container to the area where the tool will be installed. Open the container and remove the top and side pieces of packing foam. Carefully remove all smaller components from the shipping container, verifying that you received all components, as shown in Fig. 2-3. Finally, remove the alpha-SE ellipsometer and position it on your clear 20” by 18” (510 by 460 mm) workspace. Caution: The alpha-SE ellipsometer without sample chuck weighs approximately 37 lbs. (16 kg.). Please find an assistant to lift the alpha-SE unit out of the shipping carton and on to clear work surface. 展开
2008-06-22 06:30:36 755 4
高分求高手翻译,不要机械翻译
Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials,because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review fo... Bimetallic dendrimer-encapsulated nanoparticles(DENs)are important materials,because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts.This tutorial review focuses on the recent research advances in bimetallic DENs with respect to their synthesis,characterization,and applications as catalysts.Bimetallic DENs can be made mainly via three routes:co-complexation,sequential loading,and partial displacement.The research in bimetallic DENs has been significantly promoted by the advancement of characterization instruments.The performances of bimetallic DENs as homogeneous and heterogeneous catalysts in organic synthesis have been compared with both monometallic DENs and their physical mixtures.It is concluded that the synergistic electronic effect in bimetallic nanoparticles enhances their catalytic activities. 能翻译多少都可以的 展开
2009-03-24 13:04:22 297 2
外文文献 基于MCU的信号发生器 做毕业论文外文翻译用的,谢谢了,
 
2015-01-23 07:15:40 291 1
开关电源控制器1631内部分析,高手请进
 
2012-06-17 17:05:02 345 3
有关酸的问题 化学高手请进
在物质的分类上来说,酸属于无机物。那么醋酸属于有机物,请问醋酸属于酸吗?酸的定义电离时生成的阳离子全部是氢离子的化合物叫做酸。本人初四,请各位回答时不要添加高中内容... 在物质的分类上来说,酸属于无机物。那么醋酸属于有机物,请问醋酸属于酸吗? 酸的定义电离时生成的阳离子全部是氢离子的化合物叫做酸。 本人初四,请各位回答时不要添加高中内容 展开
2010-05-01 10:07:11 484 4
高手请进,关于通讯模块的作用。
我有一ADMA得通讯模块,我想了解一下,通讯模块的具体作用是什么,百科上的解释是“指在工业自动化控制领域中,专为电机传递不同讯号的连接器,包含工业通讯模块IFD8520转换RS-232、R... 我有一ADMA得通讯模块,我想了解一下,通讯模块的具体作用是什么,百科上的解释是“指在工业自动化控制领域中,专为电机传递不同讯号的连接器,包含 工业通讯模块IFD8520 转换RS-232、RS-422/485信号等通讯网络,以使系统架构中的驱动、控制与致动组件的串行讯息兼容。”对于这个解释我不太明白,请高手用通俗的语言为我解释一下,谢谢!请不要灌水,谢谢! 展开
2012-06-08 10:11:01 328 3
有关单体聚合的问题,高手请进
单体聚合中用过氧化苯甲酰做引发剂,但是过氧化苯甲酰的用量占到总的用水量的6.67%,请问过氧化苯甲酰在里面是不是只做引发剂的作用吗?他是不是也作为单体聚合反应的一部分参与反应的进行吗? 他会不会有控制分子量(链的终止反应)的作用呢? 假如用无机的... 单体聚合中用过氧化苯甲酰做引发剂,但是过氧化苯甲酰的用量占到总的用水量的6.67%,请问过氧化苯甲酰在里面是不是只做引发剂的作用吗?他是不是也作为单体聚合反应的一部分参与反应的进行吗? 他会不会有控制分子量(链的终止反应)的作用呢? 假如用无机的过氧化物替代是否会使反应失败呢? 展开
2005-08-24 02:07:49 536 6
化学物纯度分析. 高手请进.有高分
我厂要进一批原料. 要分析其纯度. 请高手指点. 原料如下: 钛; 聚氯乙烯树脂(PVC);9004-2促发泡稳定剂;ADC发泡剂;荧光增白剂FP;增塑剂DOP; 重质碳酸钙. 或者此原料要ZD分析其某物质含量的方法.能回答真是不胜感激. 我把分数全给你.
2008-07-17 11:58:08 487 5
毕业设计 有关labview和虚拟仪器的参考文献 外文的 麻烦Q2360725465
 
2012-04-04 02:00:55 228 1
超声波测距仪外文翻译在哪个网站能找到
 
2018-12-02 22:42:18 234 0

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