基于Arc-GIS-Engine-的GIS-開發(fā)的系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)這是一份非常不錯(cuò)的資料，歡迎下載，希望對(duì)您有幫助！
標(biāo)簽： gis系統(tǒng)
上傳時(shí)間： 2021-12-30
上傳用戶：kingwide
ArcGIS-Engine開發(fā)入門教程-c#，有需要的可以參考！
標(biāo)簽： arcgis
上傳時(shí)間： 2022-02-28
上傳用戶：ttalli
Abstract: As electronic systems take over many of the mechanical functions in a car—ranging from Engine timing to steering andbraking—there is a growing concern about fault tolerance. There should not be a single point of failure that would prevent a car fromat least "limping" off the road or making it to the nearest service station. Redundant systems, watchdog timers, and other controlcircuits are used to reroute signals and perform other functions that ensure that a vehicle can safely make it off the road when afailure occurs.
標(biāo)簽： 看門狗定時(shí)器 汽車安全系統(tǒng)
上傳時(shí)間： 2013-11-10
上傳用戶：diets
首先研究CAN總線和SAE J1939協(xié)議，提出一種基于MC9S12HZ256微控制器的總線式汽車數(shù)字儀表解決方案。詳細(xì)介紹SAE J1939協(xié)議的報(bào)文幀格式及應(yīng)用層協(xié)議中發(fā)動(dòng)機(jī)相關(guān)參數(shù)的定義，以及步進(jìn)電機(jī)及其驅(qū)動(dòng)和車速信號(hào)的處理方法。該數(shù)字儀表系統(tǒng)硬件平臺(tái)由微處理器和信號(hào)采集和信息處理及顯示等模塊組成。軟件設(shè)計(jì)部分編程實(shí)現(xiàn)了對(duì)CAN總線和各傳感器數(shù)據(jù)的讀取、處理。該系統(tǒng)能夠?qū)崟r(shí)反映車輛工況。 Abstract: In this paper，CAN bus and SAE J1939protocol are researched，and a vehicle digital instrument solution based on MC9S12HZ256MCU is proposed.The message frame format and some Engine-related parameters’definition in SAE J1939application layer protocol are introduced in detail.Stepper motor and its driver，the methods of speed signal process-ing are also introduced.The hardware platform of vehicle digital instrument is composed by MCU，signal acquisition mod-ule，and signal processing and displaying module.Data receiving and processing from CAN bus and sensors are accom-plished by programming，and vehicle condition can be reflected in real-time.
上傳時(shí)間： 2013-10-20
上傳用戶：huannan88
在汽車發(fā)動(dòng)機(jī)起動(dòng)時(shí)，若發(fā)動(dòng)機(jī)起動(dòng)后起動(dòng)機(jī)不能及時(shí)斷電，將會(huì)燒毀起動(dòng)機(jī)或損壞飛輪齒環(huán)；若變速器不在空檔位置起動(dòng)，則起動(dòng)機(jī)的瞬間動(dòng)力將使汽車位移，還可能引起交通事故和人身安全。為此介紹一種利用NXP P89LPC901單片機(jī)控制的汽車起動(dòng)保護(hù)控制器，通過檢測(cè)汽車起動(dòng)開關(guān)、變速箱檔位、發(fā)動(dòng)機(jī)轉(zhuǎn)速，實(shí)現(xiàn)對(duì)汽車發(fā)動(dòng)機(jī)起動(dòng)過程檢測(cè)和保護(hù)。起動(dòng)保護(hù)控制器在發(fā)動(dòng)機(jī)起動(dòng)過程中通過采用逐個(gè)關(guān)閉打開負(fù)載系統(tǒng)，解決汽車發(fā)動(dòng)機(jī)過程中因起動(dòng)電流大而對(duì)汽車電源的沖擊影響,延長(zhǎng)了電瓶壽命。 Abstract: When the automotive Engine is started, the Engine start motor and flywheel gear may be damaged， even traffic accidents and personal safeties may be caused by wrong operation or other factors.In order to ensure the automotive Engine can be started normally and safely,it is necessary that the protecting measures and methods are considered in the automotive electrical control system.This paper introduces a kind of the automotive Engine starting protect controller based on NXP P89LPC901 MCU.The controller can protect the Engine starting process by detecting the starter key switch,transmission stall and Engine speed.Through the use of close and open load system,the controller can solve the impact on automotive power because of the high-current load in the process of the automobile Engine starting, and extend battery life.
上傳時(shí)間： 2013-10-15
上傳用戶：mikesering
烽火交換機(jī) S2200交換機(jī)配置 及WLAN開通
標(biāo)簽： F-Engine ME-PAF 2200 1.0
上傳時(shí)間： 2014-12-29
上傳用戶：q986086481
The Tri-Mode Ethernet MAC (TEMAC) UltraController-II module is a minimal footprint,embedded network processing Engine based on the PowerPC™ 405 (PPC405) processor coreand the TEMAC core embedded within a Virtex™-4 FX Platform FPGA. The TEMACUltraController-II module connects to an external PHY through Gigabit Media IndependentInterface (GMII) and Management Data Input/Output (MDIO) interfaces and supports tri-mode(10/100/1000 Mb/s) Ethernet. Software running from the processor cache reads and writesthrough an On-Chip Memory (OCM) interface to two FIFOs that act as buffers between thedifferent clock domains of the PPC405 OCM and the TEMAC.
上傳時(shí)間： 2013-10-26
上傳用戶：yuzsu
歡迎使用 PowerPCB 教程。本教程描述了 PADS-PowerPCB 的絕大部分功能和特點(diǎn)，以及使用的各個(gè)過程，這些功能包括： · 基本操作 · 建立元件(Component) · 建立板子邊框線(Board outline) · 輸入網(wǎng)表(Netlist) · 設(shè)置設(shè)計(jì)規(guī)則(Design Rule) · 元件(Part)的布局(Placement) · 手工和交互的布線 · SPECCTRA全自動(dòng)布線器(Route Engine) · 覆銅(Copper Pour) · 建立分隔/混合平面層(Split/mixed Plane) · Microsoft的目標(biāo)連接與嵌入(OLE)(Object Linking Embedding) · 可選擇的裝配選件(Assembly options) · 設(shè)計(jì)規(guī)則檢查(Design Rule Check) · 反向標(biāo)注(Back Annotation) · 繪圖輸出(Plot Output) 使用本教程后，你可以學(xué)到印制電路板設(shè)計(jì)和制造的許多基本知識(shí)。
上傳時(shí)間： 2013-10-08
上傳用戶：x18010875091
CSL is a programming language with C syntax and comprehensive libraries. The compact scripting Engine can also be embedded into your own applications as a powerful macro language. Windows Distribution utilities.
標(biāo)簽： comprehensive programming libraries scripting
上傳時(shí)間： 2013-11-27
上傳用戶：xuanchangri
Atheon is a portable Server/Client program designed for easy incorporation into just about any game Engine. Atheon是一個(gè)可移植的服務(wù)器/客戶端程序，設(shè)計(jì)為可以方便地集成到任何游戲引擎中。 來源: http://sourceforge.net/projects/atheon/
標(biāo)簽： incorporation designed portable program
上傳時(shí)間： 2014-11-26
上傳用戶：541657925
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