針對(duì)船舶氣象儀保障維修而設(shè)計(jì)的船舶氣象儀測(cè)試系統(tǒng)，包括信息處理終端、主儀器檢測(cè)模塊、傳感器檢測(cè)模塊，各個(gè)模塊都采用基于AVR單片機(jī)的嵌入式系統(tǒng)，模塊之間通過CAN總線進(jìn)行通信。結(jié)果表明，船舶氣象儀測(cè)試系統(tǒng)能夠快速檢測(cè)船舶氣象儀故障，與單純依靠人工方式排查故障相比，故障檢測(cè)時(shí)間縮短了60%以上。 Abstract: The test system of ship meteorological instrument was developed to satisfy the maintenance of ship meteorological instruments，which composed of information processing terminal， testing module of main instrument and testing module of sensors. Each of these modules included an embedded system based on microcontroller of AVR series and communicated with other module by CAN bus. The results show that the test system can judge the fault of ship meteorological instrument quickly and shorten the fault detection time as much as 60% compared with simple manual troubleshooting.
標(biāo)簽： AVR 單片機(jī) 氣象儀 測(cè)試系統(tǒng)
上傳時(shí)間： 2013-11-23
上傳用戶：stvnash
本文介紹了基于AT89C52 單片機(jī)的自動(dòng)水溫控制系統(tǒng)的設(shè)計(jì)及實(shí)現(xiàn)過程。該系統(tǒng)具有實(shí)時(shí)顯示、溫度測(cè)量、溫度設(shè)定并能根據(jù)設(shè)定值對(duì)環(huán)境溫度進(jìn)行調(diào)節(jié)實(shí)現(xiàn)控溫的目的以及達(dá)到上下限溫度報(bào)警功能，控制算法是基于數(shù)字PID 算法。關(guān)鍵詞 ：PID AT89C52 脈寬調(diào)制 實(shí)時(shí) Abstract ： This article describes AT89C52 single-chip microcomputer-basedautomatic water temperature control system design and implementation process. Thesystem has real-time display, temperature measurement, temperature settings and theenvironment in accordance with the temperature settings adjusted to achieve thepurpose of temperature control and reach the upper and lower limits of temperaturealarm function, the control algorithm is based on the digital PID algorithm.Keyword: PID AT89C52 PWM real time
上傳時(shí)間： 2013-10-10
上傳用戶：歸海惜雪
匯編器在微處理器的驗(yàn)證和應(yīng)用中舉足輕重，如何設(shè)計(jì)通用的匯編器一直是研究的熱點(diǎn)之一。本文提出了一種開放式的匯編器系統(tǒng)設(shè)計(jì)思想，在匯編語(yǔ)言與機(jī)器語(yǔ)言間插入中間代碼CMDL（code mapping description language）語(yǔ)言，打破匯編語(yǔ)言與機(jī)器語(yǔ)言的直接映射關(guān)系，由此建立起一套描述匯編語(yǔ)言與機(jī)器語(yǔ)言的開放式映射體系。基于此開放式映射體系開發(fā)了一套匯編器系統(tǒng)，具有較高層次上的通用性和可移植性。【關(guān)鍵詞】指令集，CMDL，匯編器，開放式 Design of Retargetable Assembler System Liu Ling Feng Wen Nan Wang Ying Chun Jiang An Ping Ji Li Jiu IME of Peking University, 100871【摘要】An assembler plays a very important role in the field of microprocessor verifications and applications, thus how to build a retargetable assembler system has been a hotspot in this field for long time. This paper presents a new method about the retargetable assembler system design.It provides a kind of language CMDL, code mapping description language. During the process of assembling, assembler languages are firstly translated to CMDL, and then mapped to the machine codes. In an other word, CMDL is inserted between assembler languages and machine codes during the translation procedure. As a medium code, CMDL has a lot of features, such as high extraction, strong descript capabilities. It can describe almost all attributes of assembler languages. By breaking the direct mapping relationship between assembler languages and machine codes, the complexities of machine codes are hided to the users, therefore, the new retargetable assembler system has higher retargetable level by converting the mapping from assembler languages and machine codes to assembler languages and CMDL, and implementationof it becomes easier. Based on the new mapping system structure, a retargetable assemblersystem is developed. It proved the whole system has good retargetability and implantability.【關(guān)鍵詞】instruction set, symbol table, assembler, lexical analysis, retargetability
上傳時(shí)間： 2013-10-10
上傳用戶：meiguiweishi
基于單片機(jī)的除塵控制器的設(shè)計(jì):介紹通用控制儀的硬件組成和軟件設(shè)計(jì),闡述了系統(tǒng)的性能指標(biāo)和功能特點(diǎn)。該產(chǎn)品功能完善,可靠性高,具有很好的應(yīng)用前景。關(guān)鍵詞: 除塵器;通用控制儀;單片機(jī);系統(tǒng)設(shè)計(jì) Abstract: The hardware structure and the software design are introduced in this paper, and the performance index and the features of the system are expounded. It has comp rehensive functions, high reliability and good app lication.Key words: dust catcher; universal controller; microcontroller; system design
上傳時(shí)間： 2013-11-16
上傳用戶：ming52900
The Motorola MPC106 PCI bridge/memory controller provides a PowerPCªmicroprocessor common hardware reference platform (CHRPª) compliant bridgebetween the PowerPC microprocessor family and the Peripheral Component Interconnect(PCI) bus. In this document, the term Ô106Õ is used as an abbreviation for the phraseÔMPC106 PCI bridge/memory controllerÕ. This document contains pertinent physicalcharacteristics of the 106. For functional characteristics refer to theMPC106 PCI Bridge/Memory Controller UserÕs Manual.This document contains the following topics:Topic PageSection 1.1, ÒOverviewÓ 2Section 1.2, ÒFeaturesÓ 3Section 1.3, ÒGeneral ParametersÓ 5Section 1.4, ÒElectrical and Thermal CharacteristicsÓ 5Section 1.5, ÒPin AssignmentsÓ 17Section 1.6, ÒPinout Listings 18Section 1.7, ÒPackage DescriptionÓ 22Section 1.8, ÒSystem Design InformationÓ 24Section 1.9, ÒDocument Revision HistoryÓ 29Section 1.10, ÒOrdering InformationÓ 29
標(biāo)簽： MPC 106 PCI 存儲(chǔ)器
上傳時(shí)間： 2013-11-04
上傳用戶：as275944189
設(shè)計(jì)一種應(yīng)用于某全地形ATV車載武器裝置中的中控系統(tǒng)，該系統(tǒng)設(shè)計(jì)是以TMS320F2812型DSP為核心，采用模塊化設(shè)計(jì)思想，對(duì)其硬件部分進(jìn)行系統(tǒng)設(shè)計(jì)，能夠完成對(duì)武器裝置高低、回轉(zhuǎn)方向的運(yùn)動(dòng)控制，實(shí)現(xiàn)靜止或行進(jìn)狀態(tài)中對(duì)目標(biāo)物的測(cè)距，自動(dòng)瞄準(zhǔn)以及按既定發(fā)射模式發(fā)射彈丸和各項(xiàng)安全性能檢測(cè)等功能。通過編制相應(yīng)的軟件，對(duì)其進(jìn)行系統(tǒng)調(diào)試，驗(yàn)證了該設(shè)計(jì)運(yùn)行穩(wěn)定。 Abstract: A central control system applied to an ATV vehicle weapons is designed. The system design is based on TMS320F2812 DSP as the core， uses modular design for its hardware parts. The central control system can complete the motion control of the level of weapons and equipment， rotation direction， to achieve a state of static or moving objects on the target ranging， auto-targeting and according to the established target and the projectile and the launch of the security performance testing and other functions. Through the development of appropriate software and to carry out system testing to verify the stability of this design and operation.
標(biāo)簽： ATV-ATT DSP 中控系統(tǒng)
上傳時(shí)間： 2013-11-02
上傳用戶：jshailingzzh
Field Programmable Gate Arrays (FPGAs) are becoming a critical part of every system design. Many vendors offer many different architectures and processes. Which one is right for your design? How do you design one of these so that it works correctly and functions as you expect in your entire system? These are the questions that this paper sets out to answer.
上傳時(shí)間： 2013-10-29
上傳用戶：lixqiang
嵌入式系統(tǒng)（Embedded System）是以應(yīng)用為中心，以計(jì)算機(jī)技術(shù)為基礎(chǔ)，并且軟硬件是可裁剪的，適用于對(duì)功能、可靠性、成本、體積、功耗等有嚴(yán)格要求的專用計(jì)算機(jī)系統(tǒng)。嵌入式系統(tǒng)最典型的特點(diǎn)是與人們的日常生活緊密相關(guān)，任何一個(gè)普通人都可能擁有各類形形色色運(yùn)用了嵌入式技術(shù)的電子產(chǎn)品，小到MP3、PDA等微型數(shù)字化設(shè)備，大到信息家電、智能電器、車載GIS。 雖然嵌入式系統(tǒng)是近幾年才開始真正風(fēng)靡起來(lái)的，但事實(shí)上嵌入式這個(gè)概念卻很早就已經(jīng)存在了，從上個(gè)世紀(jì)70年代單片機(jī)的出現(xiàn)到今天各種嵌入式微處理器、微控制器的廣泛應(yīng)用，嵌入式系統(tǒng)少說(shuō)也有了近30年的歷史。縱觀嵌入式系統(tǒng)的發(fā)展歷程，大致經(jīng)歷了以下四個(gè)階段：
標(biāo)簽： Windows_CE 嵌入式系統(tǒng)
上傳時(shí)間： 2014-12-29
上傳用戶：wangzeng
嵌入式系統(tǒng)（Embedded system）也稱嵌入式計(jì)算機(jī)系統(tǒng)。顧名思義，嵌入式系統(tǒng)是計(jì)算機(jī)的一種特殊形式，所以在理解嵌入式系統(tǒng)概念前，必須先明確計(jì)算機(jī)的基本概念。計(jì)算機(jī)是能按照指令對(duì)各種數(shù)據(jù)進(jìn)行自動(dòng)加工處理的電子設(shè)備，一套完整的計(jì)算機(jī)系統(tǒng)包括硬件和軟件兩個(gè)部分。軟件是指令與數(shù)據(jù)的集合，而硬件則是執(zhí)行指令和處理數(shù)據(jù)的環(huán)境平臺(tái)，是那些看得見、摸得著的部件。計(jì)算機(jī)的硬件系統(tǒng)主要由中央處理器（CPU）、存儲(chǔ)器、外部設(shè)備以及連接各個(gè)部分的計(jì)算機(jī)總線組成。
標(biāo)簽： 嵌入式 系統(tǒng)原理
上傳時(shí)間： 2013-11-23
上傳用戶：qwerasdf
Abstract: This article discusses the benefits of a G3-PLC-based automation system and presents a real-world example of a systemfor reducing energy usage and lowering maintenance costs in tunnels. The basic system design is explained and key performance
標(biāo)簽： 路燈 電力線通信 自動(dòng)化系統(tǒng)
上傳時(shí)間： 2013-10-29
上傳用戶：康郎
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