RFID networks are currently recognized as one a research area of priority. Research activities related to RFID technology have been booming recently. A number of ongoing projects are being funded in Europe, Asia, and North America. According to leading market analysts, the development of the RFID market is projected to increase from approximately $3 billion in 2005 to $25 billion in 2015. Several countries have dedicated innovation programs to support and develop RFID systems and related technologies: the RFID initiative in Taiwan, Ubiquitous Japan and the NSF SBIR program in the USA. The EU has recently advertised its Strategic Research Roadmap concerning the Internet of Things, which first of all refers to the RFID technology beFore being extended to commu- nicating devices as in M2M (Machine to Machine). In this roadmap, several application domains have been identified:
上傳時(shí)間： 2020-06-08
上傳用戶：shancjb
This introductory chapter is devoted to reviewing the fundamental ideas of control from a multivariable point of view. In some cases, the mathematics and operations on systems (modelling, pole placement, etc.), as previously treated in introductory courses and textbooks, convey to the readers an un- realistic image of systems engineering. The simplifying assumptions, simple examples and “perfect” model set-up usually used in these scenarios present the control problem as a pure mathematical problem, sometimes losing the physical meaning of the involved concepts and operations. We try to empha- sise the engineering implication of some of these concepts and, beFore entering into a detailed treatment of the different topics, a general qualitative overview is provided in this chapter.
標(biāo)簽： MultivariableControlSystems
上傳時(shí)間： 2020-06-10
上傳用戶：shancjb
n recent years, there have been many books published on power system optimization. Most of these books do not cover applications of artifi cial intelligence based methods. Moreover, with the recent increase of artifi cial intelligence applications in various fi elds, it is becoming a new trend in solving optimization problems in engineering in general due to its advantages of being simple and effi cient in tackling complex problems. For this reason, the application of artifi cial intelligence in power systems has attracted the interest of many researchers around the world during the last two decades. This book is a result of our effort to provide information on the latest applications of artifi cial intelligence to optimization problems in power systems beFore and after deregulation.
標(biāo)簽： Intelligence Artificial System Power in
上傳時(shí)間： 2020-06-10
上傳用戶：shancjb
摘 要 在網(wǎng)絡(luò)越來越發(fā)達(dá)的今天，人們對網(wǎng)絡(luò)的依賴越來越多，越來越離不開網(wǎng)絡(luò)，由此而產(chǎn)生的聊天工具越來越多，例如，國外的ICQ、國內(nèi)騰訊公司開發(fā)的OICQ。隨著網(wǎng)絡(luò)聊天一類的聊天系統(tǒng)的發(fā)展日新月異，因此產(chǎn)生了制作一個(gè)類似QQ的網(wǎng)絡(luò)聊天工具。Java是一種程序設(shè)計(jì)語言，它具有簡單的、完全面向?qū)ο笠约芭c平臺(tái)無關(guān)的結(jié)構(gòu)，也具有可移植性、高性能和安全性，并提供了多線程的功能，而Java語言最大的成功之處在于它的平臺(tái)無關(guān)性和具有強(qiáng)大的網(wǎng)絡(luò)編程功能，基于Java網(wǎng)絡(luò)編程的強(qiáng)大功能，本人將用Java編寫一個(gè)網(wǎng)絡(luò)聊天系統(tǒng)。論文首先論述了系統(tǒng)的開發(fā)背景，并對所用到的開發(fā)工具與關(guān)鍵技術(shù)做了簡單的介紹。接著對系統(tǒng)的研究意義，研究現(xiàn)狀及設(shè)計(jì)目標(biāo)進(jìn)行分析，通過對系統(tǒng)需求和可行性進(jìn)行分析，確定了系統(tǒng)的功能模塊，并畫出相應(yīng)的功能結(jié)構(gòu)圖、模塊圖和數(shù)據(jù)流圖。其次按系統(tǒng)總體設(shè)計(jì)的結(jié)果，對系統(tǒng)中的數(shù)據(jù)庫進(jìn)行結(jié)構(gòu)設(shè)計(jì)。一般來說，聊天工具大多數(shù)由客戶端程序和服務(wù)器程序,外加服務(wù)器端用于存放客戶數(shù)據(jù)的數(shù)據(jù)庫組成，本系統(tǒng)采用客戶機(jī)/服務(wù)器架構(gòu)模式，通過Java提供的Socket類來連接客戶機(jī)和服務(wù)器并使客戶機(jī)和服務(wù)器之間相互通信，由于聊天是多點(diǎn)對多點(diǎn)的，而Java提供的多線程功能，用多線程可完成多點(diǎn)對多點(diǎn)的聊天。數(shù)據(jù)庫管理系統(tǒng)用SQL Server2000，完成并通過JDBC-ODBC橋訪問數(shù)據(jù)庫。聊天系統(tǒng)完成后將可進(jìn)行多人對多人的聊天，對好友進(jìn)行添加、刪除，對新用戶的注冊，發(fā)送消息、接受消息，傳輸文件等功能。界面設(shè)計(jì)細(xì)分化，方便使用者操作和理解。服務(wù)器實(shí)現(xiàn)了查詢和修改等功能，程序邏輯聯(lián)系較緊密。 關(guān)鍵詞：JAVA，C/S，SQL Server 2000, 多線程, 數(shù)據(jù)庫管理系統(tǒng)
標(biāo)簽： java 網(wǎng)絡(luò)通訊
上傳時(shí)間： 2021-10-25
上傳用戶：XuVshu
基于JAVA CS遠(yuǎn)程監(jiān)控系統(tǒng)軟件的實(shí)現(xiàn)(源代碼+WORD論文文檔論文)基于JAVA C/S遠(yuǎn)程監(jiān)控系統(tǒng)軟件的實(shí)現(xiàn)摘 要近年來，網(wǎng)絡(luò)技術(shù)的不斷發(fā)展，為遠(yuǎn)程監(jiān)控技術(shù)的發(fā)展創(chuàng)造了條件。遠(yuǎn)程監(jiān)控系統(tǒng)軟件越來越受到人們的重視，其實(shí)用性也毋庸質(zhì)疑?；贘AVA C/S遠(yuǎn)程監(jiān)控系統(tǒng)軟件突破了空間的限制，使用者不用親臨，在自己的電腦面前就能輕松的實(shí)現(xiàn)對被監(jiān)控端機(jī)器的監(jiān)控。本系統(tǒng)采用Java網(wǎng)絡(luò)編程和Java圖形編程實(shí)現(xiàn)。筆者在開發(fā)過程中將網(wǎng)絡(luò)技術(shù)與遠(yuǎn)程監(jiān)控理論基礎(chǔ)相結(jié)合，實(shí)現(xiàn)了以下功能：能連續(xù)獲得被監(jiān)控端機(jī)器屏幕變化；實(shí)現(xiàn)被監(jiān)控端硬盤文件的上傳、下載；實(shí)現(xiàn)對鼠標(biāo)、鍵盤的模擬；實(shí)現(xiàn)在遠(yuǎn)程機(jī)器上執(zhí)行任意DOS命令；遠(yuǎn)程關(guān)機(jī)、遠(yuǎn)程重啟計(jì)算機(jī)，方便了用戶監(jiān)視和操作被監(jiān)控端機(jī)器。本系統(tǒng)從系統(tǒng)需求分析、概要設(shè)計(jì)、詳細(xì)設(shè)計(jì)到具體的編碼實(shí)現(xiàn)和后期的代碼優(yōu)化、功能測試都嚴(yán)格遵循了軟件工程的思想。 關(guān)鍵詞：遠(yuǎn)程監(jiān)控；Java Robot；屏幕截??；Java Socket
標(biāo)簽： java 遠(yuǎn)程監(jiān)控系統(tǒng)
上傳時(shí)間： 2021-10-25
上傳用戶：
本設(shè)計(jì)基于STC89C52單片機(jī)、1302時(shí)鐘芯片準(zhǔn)確計(jì)時(shí)、LCD1602液晶顯示、24c02芯片可以掉電存儲(chǔ)數(shù)據(jù)、3v直流電機(jī)模擬發(fā)動(dòng)機(jī)工作。當(dāng)無乘客時(shí)液晶可以顯示時(shí)間（年月日時(shí)分秒），時(shí)間可以按鍵設(shè)置，此時(shí)電機(jī)不工作；當(dāng)有乘客時(shí)電機(jī)工作，可以通過按鍵開始計(jì)費(fèi)系統(tǒng)工作，有清零鍵，收費(fèi)可以修改（包括起價(jià)費(fèi)、超過起價(jià)費(fèi)每公里或分鐘收費(fèi)、白天和夜晚收費(fèi)標(biāo)準(zhǔn)），可以切換白天和夜晚收費(fèi)標(biāo)準(zhǔn)，可以按照分鐘或公里收費(fèi)切換。資料內(nèi)容
標(biāo)簽： 51單片機(jī) 出租車計(jì)價(jià)器
上傳時(shí)間： 2021-12-01
上傳用戶：
目錄前言4簡介6 1 范圍72 規(guī)范性引用文件73 術(shù)語和定義74 試驗(yàn)要求104.1 所需特性104.1.1 基本運(yùn)動(dòng)104.1.2 虛假運(yùn)動(dòng)104.1.3 信號容差114.1.4 振幅公差114.1.5 頻率公差114.1.6 掃描124.2 控制策略124.2.1 單點(diǎn)/多點(diǎn)控制124.2.2 多參考控制134.3 安裝135 嚴(yán)重程度135.1 頻率范圍145.1.1 低頻f Hz 1415.1.2 高頻f Hz 142
標(biāo)簽： 正弦振動(dòng) 國際標(biāo)準(zhǔn)
上傳時(shí)間： 2021-12-11
上傳用戶：XuVshu
基于FPGA設(shè)計(jì)的sdram讀寫測試實(shí)驗(yàn)Verilog邏輯源碼Quartus工程文件+文檔說明，DRAM選用海力士公司的 HY57V2562 型號,容量為的 256Mbit,采用了 54 引腳的TSOP 封裝, 數(shù)據(jù)寬度都為 16 位, 工作電壓為 3.3V,并丏采用同步接口方式所有的信號都是時(shí)鐘信號。FPGA型號Cyclone4E系列中的EP4CE6F17C8，Quartus版本17.1。timescale 1ps/1psmodule top(input clk,input rst_n,output[1:0] led,output sdram_clk, //sdram clockoutput sdram_cke, //sdram clock enableoutput sdram_cs_n, //sdram chip selectoutput sdram_we_n, //sdram write enableoutput sdram_cas_n, //sdram column address strobeoutput sdram_ras_n, //sdram row address strobeoutput[1:0] sdram_dqm, //sdram data enable output[1:0] sdram_ba, //sdram bank addressoutput[12:0] sdram_addr, //sdram addressinout[15:0] sdram_dq //sdram data);parameter MEM_DATA_BITS = 16 ; //external memory user interface data widthparameter ADDR_BITS = 24 ; //external memory user interface address widthparameter BUSRT_BITS = 10 ; //external memory user interface burst widthparameter BURST_SIZE = 128 ; //burst sizewire wr_burst_data_req; // from external memory controller,write data request ,beFore data 1 clockwire wr_burst_finish; // from external memory controller,burst write finish
標(biāo)簽： fpga sdram verilog quartus
上傳時(shí)間： 2021-12-18
上傳用戶：
ABB機(jī)器人編程手冊.pdfAliasIO is used to define a signal of any type with an alias name or to use signals in builtin task modules. Signals with alias names can be used for predefined generic programs, without any modification of the program beFore running in different robot installations. The instruction AliasIO must be run beFore any use of the actual signal. See Basic examples on page 21 for loaded modules, and More examples on page 22 for installed modules.
上傳時(shí)間： 2022-03-28
上傳用戶：kingwide
1. Preface2. The concept2.2. Prescience 2.3. Reading guide 2.4. Abbreviations 2.5. Version management3. Hardware3.2. ESP32 3.3.2. Hardware schema 3.3.3. DHT22 and level shifter 3.3.4. Geekcreit? ESP32 Development Board4. Software4.2. Installatie van GIT 4.3. Installatation of the ESP32 Core 4.4. Installation of the Xtensa and ESP32 Tools 4.5. Python 4.5.1. Install Python 4.5.2. Installation of pySerial and EspTool 4.6. Test the software installation5. The ESP32 IoT project 5.1.1. WiFi connection 5.1.2. Setup date and time 5.1.3. MQTT connection 5.1.4. Determining temperature and humidity 5.2. IOT_ESP32_Project source6. Test6.2. ESP32, NodeJS, MongoDB en Mosca 6.2.1. Start MongoDB 6.2.2. Start NodeJS Express serve and Mosca broker 6.2.3. Start the ESP32 6.2.4. Start an Chrome browser
上傳時(shí)間： 2022-04-05
上傳用戶：kingwide
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