基于Arc-GIS-engIne-的GIS-开发的系统设计与实现这是一份非常不错的资料，欢迎下载，希望对您有帮助！
标签： gis系统
上传时间： 2021-12-30
上传用户：kingwide
ArcGIS-engIne开发入门教程-c#，有需要的可以参考！
标签： arcgis
上传时间： 2022-02-28
上传用户：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.
上传时间： 2013-11-10
上传用户：diets
首先研究CAN总线和SAE J1939协议，提出一种基于MC9S12HZ256微控制器的总线式汽车数字仪表解决方案。详细介绍SAE J1939协议的报文帧格式及应用层协议中发动机相关参数的定义，以及步进电机及其驱动和车速信号的处理方法。该数字仪表系统硬件平台由微处理器和信号采集和信息处理及显示等模块组成。软件设计部分编程实现了对CAN总线和各传感器数据的读取、处理。该系统能够实时反映车辆工况。 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.
上传时间： 2013-10-20
上传用户：huannan88
在汽车发动机起动时，若发动机起动后起动机不能及时断电，将会烧毁起动机或损坏飞轮齿环；若变速器不在空档位置起动，则起动机的瞬间动力将使汽车位移，还可能引起交通事故和人身安全。为此介绍一种利用NXP P89LPC901单片机控制的汽车起动保护控制器，通过检测汽车起动开关、变速箱档位、发动机转速，实现对汽车发动机起动过程检测和保护。起动保护控制器在发动机起动过程中通过采用逐个关闭打开负载系统，解决汽车发动机过程中因起动电流大而对汽车电源的冲击影响,延长了电瓶寿命。 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.
上传时间： 2013-10-15
上传用户：mikesering
烽火交换机 S2200交换机配置 及WLAN开通
上传时间： 2014-12-29
上传用户：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.
上传时间： 2013-10-26
上传用户：yuzsu
欢迎使用 PowerPCB 教程。本教程描述了 PADS-PowerPCB 的绝大部分功能和特点，以及使用的各个过程，这些功能包括： · 基本操作 · 建立元件(Component) · 建立板子边框线(Board outline) · 输入网表(Netlist) · 设置设计规则(Design Rule) · 元件(Part)的布局(Placement) · 手工和交互的布线 · SPECCTRA全自动布线器(Route engIne) · 覆铜(Copper Pour) · 建立分隔/混合平面层(Split/mixed Plane) · Microsoft的目标连接与嵌入(OLE)(Object Linking Embedding) · 可选择的装配选件(Assembly options) · 设计规则检查(Design Rule Check) · 反向标注(Back Annotation) · 绘图输出(Plot Output) 使用本教程后，你可以学到印制电路板设计和制造的许多基本知识。
上传时间： 2013-10-08
上传用户：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.
标签： comprehensive programming libraries scripting
上传时间： 2013-11-27
上传用户：xuanchangri
Atheon is a portable Server/Client program designed for easy incorporation into just about any game engIne. Atheon是一个可移植的服务器/客户端程序，设计为可以方便地集成到任何游戏引擎中。 来源: http://sourceforge.net/projects/atheon/
标签： incorporation designed portable program
上传时间： 2014-11-26
上传用户：541657925
