介绍了基于单片机航空交流电参数测试仪的系统设计。以Silicon Labs公司的C8051F005单片机为核心设计出数据采集板，通过RS-232串口与上位机通讯。运用Lab Windows/CVI编写的上位机软件实现信号的检测以及波形和数据的显示，给出了测试仪硬件电路的组成和软件流程图。本系统具有硬件结构简单、容易实现和成本低等特点，在实际应用中其稳定性、精确性均能满足客户要求。 Abstract: The design of aeronautics AC parameters tester based on the single-chip is introduced.The core component of data acquisition board is C8051F005 single chip of Silicon Labs Company,and communication with PC through RS-232. The signal processing software programmed with LabWindows/CVI can be used successfully to fulfill inspection of signal and display of the waveform and data. The hardware and software configuration of test instrument are provided.The hardware of the system is simple, and can be easily realized.The stability and precision of the measurement instrument are enough to meet the requirements.
上传时间： 2013-11-18
上传用户：wang5829
介绍了电力操作电源与智能电池巡检系统的特点，给出了一种基于超低功耗单片机MSP430 F149针对中小型变电站自动化运行的专用设备的基本设计原理及实现方法，最后给出了详细硬件构成和软件实现。该系统能满足中小型变电站安全、可靠、自动运行的要求，并通过与上位机的串行通信实现变电站的远程管理和控制。 Abstract: The characters of the intelligent battery data logging system of the electric operation power are introduced.The basic design principle and the implemented methods of the special equipment which only designed for the middle or small transformer substation based on MSP430F149 are prescribed. Finally, the hardware block diagram and the software flow chart are also given. The function that the system finally needs to realize can basically meet with the middle or small transformer substation’s satisfy, reliably,and automatic running.And it can also realize the transformer substation long-distance management and control by serial communicating with the host computer.
上传时间： 2013-11-25
上传用户：黄华强
介绍基于ATmega8型单片机的温度测量及加热控制系统。分析系统的工作原理，详尽讨论系统的硬件电路和软件流程。实验证明，该系统工作可靠，稳定性高。 Abstract: The new temperature measuring and heating control system based on ATmega8 MCU is introduced.The system’s working principles is analyzed.The design principles of hardware and software are also discussed in detail.This system has been testified and it works steady and reliably.
上传时间： 2013-11-21
上传用户：caiguoqing
为解决传统可视倒车雷达视频字符叠加器结构复杂，可靠性差，成本高昂等问题，在可视倒车雷达设计中采用视频字符发生器芯片MAX7456。该芯片集成了所有用于产生用户定义OSD，并将其插入视频信号中所需的全部功能，仅需少量的外围阻容元件即可正常工作。给出了以MAX7456为核心的可视倒车雷达的软、硬件实现方案及设计实例。该方案具有电路结构简单、价格低廉、符合人体视觉习惯的特点。经实际装车测试，按该方案设计的可视倒车雷达视场清晰、提示字符醒目、工作可靠，可有效降低驾驶员倒车时的工作强度、减少倒车事故的发生。 Abstract: A new video and text generation chip，MAX7456，was used in the design of video parking sensor in order to simplify system structure，improve reliability and reduce cost. This chip included all the necessary functions to generate user-defined OSDs and to add them into the video signals. It could be put into work with addition of just a small number of resistances and capacitors. This paper provided software and hardware implementation solutions and design example based on the chip. The system had the characteristics of simplicity in circuit structure，lower cost，and comfort for the nature of human vision. Loading road test demonstrates high video and text display quality and reliable performance，which makes the driver easy to see backward and reduces chance of accidents.
上传时间： 2013-12-10
上传用户：qiaoyue
提出一种基于单片机AT89C51SND1C的MP3播放系统的设计方案。单片机集成了专用的解码器，使用K9F1208闪存作为外存储器，放音电路采用CS4330，存储文件通过播放器上的USB接口设备从PC机上直接下载，液晶显示采用LCD1602。方案设计简单，性价比高，低功耗，易扩展。由于采用的是通用单片机实现的，可以很容易地移植到其他微控制器系统中，有很强的市场竞争能力和实用价值。 Abstract: A MP3 player design based on microchip AT89C51SND1C was presented, which used K9F1208 Flash chip as the memory circuit and used CS4330 as play chip. Storage files were download from PC through USB interfaces player on the device，and the LCD/602 was used as display screen. This system had characteristics of simple design,low power,easy expand，low cost and high recognition. Using of universual microchip make it easy to transplant to other microcontrol system，and have strong market competitiom and practical value.
上传时间： 2014-12-27
上传用户：佳期如梦
第一章 序論……………………………………………………………6 1- 1 研究動機…………………………………………………………..7 1- 2 專題目標…………………………………………………………..8 1- 3 工作流程…………………………………………………………..9 1- 4 開發環境與設備…………………………………………………10 第二章 德州儀器OMAP 開發套件…………………………………10 2- 1 OMAP介紹………………………………………………………10 2-1.1 OMAP是什麼?…….………………………………….…10 2-1.2 DSP的優點……………………………………………....11 2- 2 OMAP Architecture介紹………………………………………...12 2-2-1 OMAP1510 硬體架構………………………………….…12 2-2.2 OMAP1510軟體架構……………………………………...12 2-2.3 DSP / BIOS Bridge簡述…………………………………...13 2- 3 TI Innovator套件 -- OMAP1510 ……………………………..14 2-2.1 General Purpose processor -- ARM925T………………...14 2-2.2 DSP processor -- TMS320C55x …………………………15 2-2.3 IDE Tool – CCS …………………………………………15 2-2.4 Peripheral ………………………………………………..16 第三章 在OMAP1510上建構Embedded Linux System…………….17 3- 1 嵌入式工具………………………………………………………17 3-1.1 嵌入式程式開發與一般程式開發之不同………….….17 3-1.2 Cross Compiling的GNU工具程式……………………18 3-1.3 建立ARM-Linux Cross-Compiling 工具程式………...19 3-1.4 Serial Communication Program………………………...20 3- 2 Porting kernel………………………………………………….…21 3-2.1 Setup CCS ………………………………………….…..21 3-2.2 編譯及上傳Loader…………………………………..…23 3-2.3 編譯及上傳Kernel…………………………………..…24 3- 3 建構Root File System………………………………………..…..26 3-3.1 Flash ROM……………………………………………...26 3-3.2 NFS mounting…………………………………………..27 3-3.3 支援NFS Mounting 的kernel…………………………..27 3-3.4 提供NFS Mounting Service……………………………29 3-3.5 DHCP Server……………………………………………31 3-3.6 Linux root 檔案系統……………………………….…..32 3- 4 啟動及測試Innovator音效裝置…………………………..…….33 3- 5 建構支援DSP processor的環境…………………………...……34 3-5.1 Solution -- DSP Gateway簡介……………………..…34 3-5.2 DSP Gateway運作架構…………………………..…..35 3- 6 架設DSP Gateway………………………………………….…36 3-6.1 重編kernel……………………………………………...36 3-6.2 DEVFS driver…………………………………….……..36 3-6.3 編譯DSP tool和API……………………………..…….37 3-6.4 測試……………………………………………….…….37 第四章 MP3 Player……………………………………………….…..38 4- 1 MP3 介紹………………………………………………….…….38 4- 2 MP3 壓縮原理……………………………………………….….39 4- 3 Linux MP3 player – splay………………………………….…….41 4.3-1 splay介紹…………………………………………….…..41 4.3-2 splay 編譯………………………………………….…….41 4.3-3 splay 的使用說明………………………………….……41 第五章 程式改寫………………………………………………...…...42 5-1 程式評估與改寫………………………………………………...…42 5-1.1 Inter-Processor Communication Scheme…………….....42 5-1.2 ARM part programming……………………………..…42 5-1.3 DSP part programming………………………………....42 5-2 程式碼………………………………………………………..……43 5-3 雙處理器程式開發注意事項…………………………………...…47 第六章 效能評估與討論……………………………………………48 6-1 速度……………………………………………………………...48 6-2 CPU負載………………………………………………………..49 6-3 討論……………………………………………………………...49 6-3.1分工處理的經濟效益………………………………...49 6-3.2音質v.s 浮點與定點運算………………………..…..49 6-3.3 DSP Gateway架構的限制………………………….…50 6-3.4減少IO溝通……………….………………………….50 6-3.5網路掛載File System的Delay…………………..……51 第七章 結論心得…
上传时间： 2013-10-14
上传用户：a471778
Bootloader是微处理器上电时运行的第一段代码，它可以通过通信接口实现对微处理器内部应用程序的更新升级，为网络化嵌入式产品的应用程序升级带来极大的便利。由于目前没有统一嵌入式系统的Bootloader。基于NEC 78K0系列单片机自编程原理，设计出一个适用于78K0/Fx2系列单片机的Bootloader，并能够通过单片机串口在线升级应用程序。 Abstract: Bootloader is the first piece of code executed after microprocessor startup. It makes the embedded product’s firmware update conveniently through communication interface. However， no unified bootloader is available for all kinds of microprocessor products. Based on the principle of self-programming NEC 78K0s’ series， a useful Bootloader which is suitable for 78K0/Fx2s’ series MCU is designed，the design can update the application through serial ports.
标签： Bootloader MCU 自编程
上传时间： 2013-10-26
上传用户：fang2010
The MSP-FET430U14 is a powerful flash emulation tool to quickly begin application development on the MSP430 MCU. It includes USB debugging interface used to program and debug the MSP430 in-system through the JTAG interface or the pin saving Spy Bi-Wire (2-wire JTAG) protocol. The flash memory can be erased and programmed in seconds with only a few keystrokes, and since the MSP430 flash is ultra-low power, no external power supply is required. The debugging tool interfaces the MSP430 to the included integrated software environment and includes code to start your design immediately. The MSP-FET430UIF development tools supports development with all MSP430 flash devices
上传时间： 2013-10-28
上传用户：13691535575
Atmel AVR 单片机上网方案 The AVR Embedded Internet Toolkit is the fastest way to connect anyembedded design to the Internet. It includes an ATmega AVR microcontroller,dedicated hardware, and all required software protocols forconnecting to the Internet. The AVR Embedded Internet Toolkit is thefastest choice for getting started with embedded Internet and for developinga complete embedded application connected to the Internet.
上传时间： 2013-11-06
上传用户：xjz632
NXP Semiconductor designed the LPC2400 microcontrollers around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded Trace. The LPC2400 microcontrollers have 512 kB of on-chip high-speedFlash memory. This Flash memory includes a special 128-bit wide memory interface andaccelerator architecture that enables the CPU to execute sequential instructions fromFlash memory at the maximum 72 MHz system clock rate. This feature is available onlyon the LPC2000 ARM Microcontroller family of products. The LPC2400 can execute both32-bit ARM and 16-bit Thumb instructions. Support for the two Instruction Sets meansEngineers can choose to optimize their application for either performance or code size atthe sub-routine level. When the core executes instructions in Thumb state it can reducecode size by more than 30 % with only a small loss in performance while executinginstructions in ARM state maximizes core performance.
上传时间： 2013-11-15
上传用户：zouxinwang
