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。詳細介紹SAE J1939協(xié)議的報文幀格式及應用層協(xié)議中發(fā)動機相關參數(shù)的定義，以及步進電機及其驅(qū)動和車速信號的處理方法。該數(shù)字儀表系統(tǒng)硬件平臺由微處理器和信號采集和信息處理及顯示等模塊組成。軟件設計部分編程實現(xiàn)了對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.
上傳時間： 2013-10-20
上傳用戶：huannan88
設計一種基于AT89C52的語音錄放系統(tǒng)，利用單片機、ISD2560語音錄放器件、麥克風、揚聲器等元器件實現(xiàn)硬件電路的設計，并利用C51高級語言設計ISD2560器件控制字的寫入和定時中斷程序。經(jīng)軟硬件調(diào)試，結(jié)果表明該系統(tǒng)錄放效果良好，具有一定的工程實用價值。 Abstract: Voice recording and playback system based on AT89C52is designed in this paper.Using the single-chip microcomputer，voice recording and playback chip ISD2560，microphone and speaker to realize the hardware circuit design.Writing ISD2560control words and timing interrupt procedures are designed by C51advanced language.Through the hardware and software test,voice recording and playback system play better voice,and this system has some engineering practical values.
上傳時間： 2013-10-20
上傳用戶：ywcftc277
MG3500SoC是支持H.264高清編解碼器的片上系統(tǒng)，內(nèi)部集成一個嵌入式ARM926處理器，支持高清H.264編解碼、MPEG鄄2解碼和JPEG編解碼。介紹了MG3500SoC的主要性能特點、引腳排列、主要接口功能及在DVR上的應用，以及MG3500SoC及其周圍器件的硬件設計，提出了在設計中應注意的問題。 Abstract: The MG3500System-on-Chip（SoC）is high definition（HD）H.264codec,including ARM926-EJ processor，H.264encoder/decoder，MPEG2decoder and JPEG/MJPEG encoder/decoder.The features,pin assignments，interfaces and the typical application of MG3500in DVR are introduced in this paper.The application hardware circuit between the MG3500SoC and peripheral device are given,the questions which the syetem design needs to pay attention are explained.
上傳時間： 2013-11-12
上傳用戶：elinuxzj
介紹了以AVR單片機ATmega16為核心，采用前端信號調(diào)理電路、程控增益放大器以及波形顯示LCD（GDM12864A）實現(xiàn)的一個簡易示波器。并給出該系統(tǒng)設計的硬件和軟件設計方案。 Abstract: Abstract:This paper introduces an easy digital storage oscilloscope based on the AVR microcontroller ATmega16,especially emphasizes on the software design and the hardware design which contains signal processing circuit,gain-programmed amplifier circuit and LCD’s interface circuit and so on.
上傳時間： 2013-10-13
上傳用戶：ccccccc
提出一種基于C8051F040的炮塔方位角測試系統(tǒng)的設計方案，給出測試系統(tǒng)的各個模塊軟硬件設計。炮塔方位角測試系統(tǒng)集數(shù)據(jù)采集，數(shù)據(jù)傳輸和數(shù)據(jù)顯示等功能于一體，實現(xiàn)了炮塔方位角裝置的離線檢測。系統(tǒng)軟件采用C51編寫，對單片機進行有效電源管理，保證了系統(tǒng)的穩(wěn)定性，可靠性。 Abstract: This paper puts forwards a design of artillery position system based on C8051F040，describes all modules hardware and software design of measurement system.The system has the function of information collection，transmission，and display.It can measure artillery position system in offline.The system software using C51can manage the power of single chip microcomputer，guarantee the stability，reliability.
標簽： C8051F040 方位角 測試系統(tǒng)
上傳時間： 2014-12-27
上傳用戶：7891
介紹一種多功能音樂播放器，它是以AT89S52單片機為核心，并輔有一些外圍器件，采用匯編語言編寫程序，實現(xiàn)多功能音樂播放，歌曲自動循環(huán)播放和使用琴鍵自編曲目功能。此外，彩燈顯示歌曲節(jié)奏，按鍵跳轉(zhuǎn)到喜愛曲目，液晶顯示當前播英文曲目。并給出了系統(tǒng)軟硬件設計。 Abstract: It introduces a multifunctional music player,taking AT89S52 single-chip microcomputer as hardware control core and using some peripheral elements.Programmes are compiled in assembly language to act as expected.There are two functional modes in this system.One is to make the music play automatically and consecutively,the other is to compose new songs through keys.In addition,lights show the pace of music and the English names can be displayed in the liquid crystal screen.With perfect combination of hardware and software,the music player can meet many music lovers’needs for multifunctional music player.And the hardware and software of the system are given.
上傳時間： 2013-11-18
上傳用戶：xiaodu1124
應用德國Micronas公司的CDC3207G微控制器開發(fā)了一款汽車儀表板系統(tǒng)。詳細地介紹了該系統(tǒng)的硬件原理，以及步進電機，音頻控制，LCD顯示，LED指示燈和報警燈等幾個模塊的實現(xiàn)方法。應用μC/OS-II實時操作系統(tǒng)開發(fā)軟件。著重介紹了啟動代碼的設計和任務的規(guī)劃。 Abstract: A dashboard system is developed by using CDC3207G microcontroller made by Micronas.The hardware of the sys-tem and the realization of the step motor module,audio module,LCD display and LED indicator and alarm module are ex-plained in detail.The μC/OS-II real-time operating system is used for the software development and the starting code design and the task planning is explained specifically.
上傳時間： 2013-10-26
上傳用戶：x4587
介紹了一種基于C8051F020單片機的多路壓力測量儀。該測量儀選用電阻應變式壓力傳感器采集壓力信號，并經(jīng)放大電路處理后送入C8051F020單片機，再由C8051F020單片機內(nèi)部的A/D轉(zhuǎn)換器將采集到的壓力信號進行模數(shù)轉(zhuǎn)化，然后分別對數(shù)據(jù)進行存儲和顯示。該測量儀能測量6路壓力信號，并且各測量點都能單獨檢測和設置。由于采用了C8051F020單片機，簡化了硬件電路，增強了抗干擾能力，使得測量儀具有測量精度高，沖擊小等特點。 Abstract: A measurement apparatus for multi-channel pressure based on single chip microcomputer is introduced.It can measure 6 channels signal of the pressure，and the pressure measure points can be detection and located individually.The pressure signal sampling is obtained by resistor stress-type pressure sensors，the digital signals of 6 channels are collected through amplifying and adjustment circuit of pressure signals and internal integrated A/D converter of MCU.Finally，and it realizes the function to store and display data separately.C8051F020 was used to made hardware circuit simple，and it also enhanced the anti-interference ability.It features high precision and little impact.
上傳時間： 2013-11-16
上傳用戶：yare
Mega16是一款采用先進RISC精簡指令，內(nèi)置A/D的8位單片機，可支持低電壓聯(lián)機 Flash和EEPROM 寫入功能；同時還支持 Basic和C 等高級語言編程。用它設計電子時鐘不僅成本低，硬件簡單，而且很容易實現(xiàn)系統(tǒng)移植。介紹了如何利用AVR系列單片機Mega16及1602字符液晶來設計電子時鐘的方法，同時給出了相應的電路原理及部分語言程序。 Abstract: ?Mega16 is a high-performance, low power consumption, the use of advanced RISC concise instructions, built-in A/D 8-bit microcontrollers, the on-line support for low-voltage Flash, EEPROM write function. Except Mega16 also support the Basic, C, and other high-level language programming.The electronic clock which is deisgned by Mega16 is not only low-cost, simple hardware, but easy to achieve system migration.The design method of electrioic clock based on the AVR Mega16 and character LCD1602 is introduced in this paper,and the corresponding circuit electrionic and some language program are given.
上傳時間： 2014-12-27
上傳用戶：zl5712176
針對目前燃氣灶市場的狀況，提出一種基于PIC16C711單片機的燃氣灶脈沖點火控制器設計,具體包括有系統(tǒng)的組成和功能介紹、硬件電路設計及軟件功能實現(xiàn)。 Abstract: Aiming at today’s gas cooker market, a pulse ignition controler design based on PIC16C711 is presented.The specific descriptions of system components and functions,hardware circuit design and software function are given.
上傳時間： 2013-10-31
上傳用戶：zhqzal1014
