HDH-WMS智能库系统应用于自动化存取仓库，实现对物料的安全精细化一对一的管理，物料的存取通过扫描枪或扫描器对物料二维码、条码读取或通过人工输入物料编码等方式，系统内部机械手自动将物料取出或存入到仓库内，并对物料、操作员、物料供应商等进行信息化管理。
The HDH-WMS intelligent warehouse system is applied in the automatic storage and retrieval warehouse to realize the one-to-one management of the security of materials, material access through the scanning gun or scanner to material two-dimensional code, bar code reading or manual input material code, and other means, the system's internal manipulator automatically take out or store the material to the warehouse, and materials, operators, materials suppliers and other information management. (2020-10-15, WORD, 24KB, 下载2次)
某高校现有两个地理位置分离的分校区，每个校区入网信息点有2000多个，现准备通过科教网接入因特网，但从科教网只申请到4个C类网络（202.96.1.0——202.96.4.0），为了安全，要求每个分校区的学生公寓子网和教师子网不在同一广播域。同时，学校有若干台应用服务器，同时对内和对外提供Web等网络服务。
There are two separate campuses in a certain university. There are more than 2000 intranet information points in each campus. Now we are ready to access the Internet through the science and education network, but only 4 C networks (202.96.1.0 - 202.96.4.0) are applied from the science and education network. In order to be safe, the students' apartment network and the teacher subnet in each sub campus are not the same. Broadcast domain. At the same time, there are several application servers in the school, and Web and other Internet services are provided internally and externally. (2018-07-12, WORD, 227KB, 下载16次)
数字温度计的设计
摘要：随着人们生活水平的不断提高,单片机控制无疑是人们追求的目标之一，但人们对它的要求越来越高，要为现代人工作、科研、生活、提供更好的更方便的设施就需要从数单片机技术入手，一切向着数字化控制，智能化控制方向发展。本设计所介绍的数字温度测量系统具有读数方便，测温范围广，测温准确等优点，其输出温度采用数字显示。该设计控制器使用单片机STC89C52，测温传感器使用DS18B20，用4位共阴极LED数码管实现温度显示，能准确达到以上要求。
关键词：STC89C52 DS18B20 数码管显示 数字温度计
Design of Digital Thermomer
Abstract:SCM control is one of people’s pursue with the people’s living standard rising, but people’s demand becomes higher and higher. If people want to get more convenience on work, scientific research and life, we should do more work on single-chip computer technology.Of course with the development of technology, microcontroller technology has spread to our life, work, scientific research and so on.In this paper we introduce a new method named digital temperature system ,this system has many advantages, such as easy reading, large temperature range, accurate measure temperature and its output temperature uses digital display.This design uses STC89C52 single-chip microcomputer controller, temperature sensor DS18B20, and with 4 cathode tube LED to realize digital temperature display.
Keywords: SYC89C52 DS18B20 Digital display Digital thermomer
(2013-09-27, WORD, 1243KB, 下载2次)
本实验中的温度传感器采用了热敏电阻，热敏电阻是一种对热敏感的电阻元件，一般用半导体材料做成，可以分为负温度系数热敏电阻NTC（Negative Temperature coefficient Thermistor）和正温度系数热敏电阻PTC（Positive Temperature Coefficient Thermistor），临界温度系数热敏电阻CTR（Critical Temperature Resistor）三种，本实验用的是负温度系数热敏电阻NTC，NTC通常是一种氧化物的复合烧结体，特别适合于之间的温度测量，它的电阻值随着温度的升高而减小，其经验公式为：，式中，R0是在25时或其他参考温度时的电阻，是热力学温度（K），B称为材料的特征温度，其值与温度有关，主要用于温度测量。
Experiment of the temperature sensor adopts thermistor, the thermistor is a kind of thermal sensitive resistor element, generally with the semiconductor material, can be divided into negative temperature coefficient thermistor NTC ( Negative Temperature coefficient Thermistor ) and the positive temperature coefficient thermistor PTC ( Positive Temperature Coefficient Thermistor ), critical temperature coefficient thermistor CTR ( Critical Temperature Resistor ) three, the test was negative temperature coefficient thermistor NTC, NTC is usually an oxide sintered body, particularly suitable for the temperature measurement, the resistance decreases with increasing temperature, the experience formula is:, type, R0 is in the 25or other reference temperature resistance, is the thermodynamic temperature ( K ), B called the features of material temperature, its value and temperature, mainly used for temperature measurement. (2012-05-06, WORD, 396KB, 下载11次)
关于TCR+FC型SVC的研究文献，这篇文章考查了晶闸管控制的并联补偿器的理论基础。不平衡负荷补偿和电压稳定的条件是建立在对称分量的应用上的。适用于前馈控制（电脑的）的数学关系是根据。这里对前馈和反馈的实用方法进行了讨论。
This paper examines the theoretical foundations of thyristorcontrolled shunt compensation. Conditions for unbalanced load compensation and voltage stabilization are established with the use of symmetrical components. Mathematical relationships applicable to feedforward (computational) type controls are derived. Practical approaches to both feedforward and feedback type controls are discussed. (2011-05-06, WORD, 126KB, 下载25次)
新闻发布系统ASP 毕业设计 我们从建站的实际情况出发，经过对有关网站新闻发布事项的一番考察和分析，确立了新闻发布系统的具体实现功能。并阐述系统的结构设计和功能设计，实现新闻的分类显示，最近新闻的提示，新闻滚动功能等。经过授权的用户可以通过Web浏览器，以人机交互式的客户端程序实现对学校新闻的发布、管理、实时的进行行为统计和记录。本系统是学校网站的一个子系统，具有很好的外部接口，能够很好的配合站点的其它子系统服务于网站的新闻发布.该系统是一个基于新闻发布和内容管理的全站管理系统；
we embark from the station construction actual situation,pass through to a related website news issue item inspection and theanalysis, has established the news issue system concrete realizationfunction. And the elaboration system structural design and thefunctional design, realize the news classification to demonstratethat, the recent news prompt, the news rolls the function and so on.After the authorized user may through the Web browser, (2011-03-31, WORD, 362KB, 下载9次)
触摸屏接口对包括个人数字助理 (PDA) 应用等在内的众多信息设备都很有用，而且还可在仪表与控制应用中作为通用指示设备。如何将通过触摸屏获得的信息传递给微处理器呢？这项工作可能颇具挑战性。本文将介绍电阻式触摸屏的工作原理，并指出如何最有效地将模拟输入转换为可用的数字数据。我们将讨论建立时间、噪声过滤以及速度权衡等问题。
Touch-screen interface, including personal digital assistants (PDA) applications, including large equipment is very useful information, but also in the application of instrumentation and control equipment as a universal instruction. How to get through the touch-screen information to the microprocessor so? This work may be challenging. This article will introduce Resistive Touch Screen working principle, and pointed out how best to analog input is converted to digital data available. We will discuss the set up time, noise filtering, and speed trade-offs and so on. (2009-02-15, WORD, 111KB, 下载6次)
单端反激式开关电源具有结构简单、输入输出电气隔离、电压升／降范围宽、易于多路输出、可靠性高、造价低等优点，广泛应用于小功率场合。然而，由于漏感影响，反激变换器功率开关管关断时将引起电压尖峰，必须用钳位电路加以抑制。由于RCD钳位电路比有源钳位电路更简洁且易实现，因而在小功率变换场合RCD钳位更有实用价值。
Single-ended flyback switching power supply with a simple structure, input and output electrical isolation, voltage up/down range, easy to multi-output, high reliability and low cost, widely used in low-power occasions. However, due to leakage effects flyback converter power switch off when the voltage spike caused by the need to be inhibited by clamping circuit. RCD clamp circuit as a result of active-clamp circuit than the more concise and easy to realize, and in low-power transform RCD clamp occasions more practical value. (2008-07-17, WORD, 282KB, 下载95次)
本论文提出的“基于PLC的工业以太网控制的实现”，是通过研究工业以太网与西门子S7-300系列PLC，最终实现交通灯信号控制。安装有STEP7软件的上位机通过以太网与CPU315-2DP的以太网部件连接，在CPU315之间实现硬件组态。并在计算机中利用STEP7软件编写程序。利用计时器、比较指令等方法模拟交通灯控制，并将此模拟程序下载到PLC的CPU中，实现基于PLC的工业以太网控制交通灯信号。
the thesis of "PLC-based control of industrial Ethernet achieve," through research on industrial Ethernet and Siemens S7-300 Series PLC, the ultimate realization of traffic signal control. Installation of the software is STEP7 PC via Ethernet and CPU315- 2DP Ethernet connectivity components, CPU315 between hardware configuration. And in the computer software used STEP7 programming. Use timers, compare instructions simulation methods such as traffic lights control, this simulation program will be downloaded to the PLC CPU, PLC-based control of industrial Ethernet traffic light signals. (2005-06-02, WORD, 593KB, 下载147次)
华为 Quidway 系列多协议路由器，支持 PPP、FR、X25、SLIP、HDLC 等网络协议，用户可通过各种广域网线路接入 Internet 及互联互访。 路由器内置安全防火墙、NAT、RADIUS 安全认证，以及 CALL BACK 等多项互联安全防护功能；并通过 CA 认证协议的验证和 IPSec 隧道协议，在 Internet 上构建安全可靠的网络通道，基于硬件的数据加密，将保密数据加密后在隧道上传输，加密数据有可靠的保密性但牺牲了效率；非保密数据可以通过一般性安全处理在隧道上传输，保证较高的转发速率。硬件加密的算法采用专门的芯片（经过国家相关部门批准）进行加密，密钥长度大于 128 位，并提供高强度的一次一密功能。配合完全自主知识产权的软硬件平台，提供网络的安全互联和数据的安全传输的安全解决方案。 而 "备份中心"的可靠性备份解决方案，实现多种线路之间的任意备份和业务分担，为网络提供业界最坚固的保护屏障，保证网络的可靠运行。
Huawei Quidway series of multi-protocol routers to support PPP, FR, X25, SLIP, HDLC and other network protocols, users can through various WAN lines and Internet access to the Internet visits. Built-in security firewall router, NAT, RADIUS authentication, and a number of other CALL BACK Internet security protection functions; And through CA and validation of the agreement IPSec agreement on the Internet to establish a secure and reliable network access, hardware-based data encryption, data encryption confidentiality the tunnels on the Tunnel, a reliable data encryption confidentiality expense of efficiency; non-confidential data can be handled through the general security on the transmission tunnel to ensure a higher rate of transponders. Hardware encryption algorithm using specialized chi (2005-03-19, WORD, 80KB, 下载836次)