設(shè)計(jì)一種基于AT89C52的語(yǔ)音錄放系統(tǒng)，利用單片機(jī)、ISD2560語(yǔ)音錄放器件、麥克風(fēng)、揚(yáng)聲器等元器件實(shí)現(xiàn)硬件電路的設(shè)計(jì)，并利用C51高級(jí)語(yǔ)言設(shè)計(jì)ISD2560器件控制字的寫(xiě)入和定時(shí)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(shí)用價(jià)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.
介紹一種多功能音樂(lè)播放器，它是以AT89S52單片機(jī)為核心，并輔有一些外圍器件，采用匯編語(yǔ)言編寫(xiě)程序，實(shí)現(xiàn)多功能音樂(lè)播放，歌曲自動(dòng)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(ài)曲目，液晶顯示當(dāng)前播英文曲目。并給出了系統(tǒng)軟硬件設(shè)計(jì)。
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.
介紹一種基于C8051F060單片機(jī)和NAND Flash的數(shù)據(jù)采集存儲(chǔ)系統(tǒng)，該系統(tǒng)可實(shí)現(xiàn)3路信號(hào)采樣，每路采樣率為5KS/s,通過(guò)異步串行通信接口實(shí)現(xiàn)數(shù)據(jù)傳輸。并詳細(xì)說(shuō)明系統(tǒng)的軟件設(shè)計(jì)。
Abstract:
An acquisition and storage system based on C8051F060and NAND Flash is designed in this paper.The system is used to sample three-channel of signal,5KSPS each channel,and can upload data to test bench through UART（Universal Asynchronous Receiver/Transmitter）.The software design is discussed in detail.
介紹了一種基于C8051F020單片機(jī)的多路壓力測(cè)量?jī)x。該測(cè)量?jī)x選用電阻應(yīng)變式壓力傳感器采集壓力信號(hào)，并經(jīng)放大電路處理后送入C8051F020單片機(jī)，再由C8051F020單片機(jī)內(nèi)部的A/D轉(zhuǎn)換器將采集到的壓力信號(hào)進(jìn)行模數(shù)轉(zhuǎn)化，然后分別對(duì)數(shù)據(jù)進(jìn)行存儲(chǔ)和顯示。該測(cè)量?jī)x能測(cè)量6路壓力信號(hào)，并且各測(cè)量點(diǎn)都能單獨(dú)檢測(cè)和設(shè)置。由于采用了C8051F020單片機(jī)，簡(jiǎn)化了硬件電路，增強(qiáng)了抗干擾能力，使得測(cè)量?jī)x具有測(cè)量精度高，沖擊小等特點(diǎn)。
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.
介紹一種簡(jiǎn)單射頻識(shí)別系統(tǒng)設(shè)計(jì)。該設(shè)計(jì)包括閱讀器、應(yīng)答器和線圈3部分。由單片機(jī)控制閱讀器向應(yīng)答器發(fā)射無(wú)線信號(hào)，并接收應(yīng)答器回送的信號(hào)，再通過(guò)分析回送信號(hào)識(shí)別物品。閱讀器和應(yīng)答器之間以半雙工通信方式通信。
Abstract:
A simple design of radio frequency identification system is given in this paper.The design includes reader,responder and winding.through MCU，signals are sent to responder from reader，then corresponding signals are sent back. According to the analysis of the signals sent back，the objects can be identified.Half-duplex communication is adopted? between? reader? and? responder.
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(guò)檢測(cè)汽車起動(dòng)開(kāi)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(guò)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(guò)程中通過(guò)采用逐個(gè)關(guān)閉打開(kāi)負(fù)載系統(tǒng)，解決汽車發(fā)動(dòng)機(jī)過(guò)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.
介紹一種無(wú)極可調(diào)交流電子負(fù)載設(shè)計(jì)的新方法，由ATmega48單片機(jī)輸出PWM波，通過(guò)上位機(jī)設(shè)定不同的占空比控制場(chǎng)效應(yīng)管的通斷時(shí)間，即改變流過(guò)場(chǎng)效應(yīng)管的平均電流。根據(jù)電流的大小，可以等效為相應(yīng)的負(fù)載，并將采集的電流值顯示在上位機(jī)上。文中對(duì)該系統(tǒng)的軟﹑硬件設(shè)計(jì)思路作了詳細(xì)的分析，闡述了其設(shè)計(jì)原理。
Abstract:
A new type electronic load is introduced.Due to ATmega48 microcomputer output PWM wave.The different duty is set ratio through PC to control FET turn-on time.We can equivalent homologous load according the current and display the current at PC.The hardware and software designing are analysed in detail. The principle is explained and the output is also given.
介紹了基于單片機(jī)航空交流電參數(shù)測(cè)試儀的系統(tǒng)設(shè)計(jì)。以Silicon Labs公司的C8051F005單片機(jī)為核心設(shè)計(jì)出數(shù)據(jù)采集板，通過(guò)RS-232串口與上位機(jī)通訊。運(yùn)用Lab Windows/CVI編寫(xiě)的上位機(jī)軟件實(shí)現(xiàn)信號(hào)的檢測(cè)以及波形和數(shù)據(jù)的顯示，給出了測(cè)試儀硬件電路的組成和軟件流程圖。本系統(tǒng)具有硬件結(jié)構(gòu)簡(jiǎn)單、容易實(shí)現(xiàn)和成本低等特點(diǎn)，在實(shí)際應(yīng)用中其穩(wěn)定性、精確性均能滿足客戶要求。
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.
詳細(xì)介紹了TLC1549系列模數(shù)轉(zhuǎn)換器的特點(diǎn)及工作原理，然后根據(jù)TLC1549的工作時(shí)序和A/D轉(zhuǎn)換原理針對(duì)實(shí)際問(wèn)題編寫(xiě)了詳細(xì)的匯編語(yǔ)言程序。
Abstract:
A basic principle and characteristic of TLC1549 analog-to-digital converter are introduced? detailedly in this article.through engineering-oriented illustration,a microcomputer programmer base on basic principle and time sequence of TLC1549 is writted.
利用Atmel公司的ATmega168微處理器，采用A/D轉(zhuǎn)換方式來(lái)實(shí)現(xiàn)按摩椅控制器的鍵盤接口，通過(guò)在硬件電路中巧妙地選擇電阻，在軟件設(shè)計(jì)中采用數(shù)字濾波、二分法和區(qū)間鑒定等方法，靈敏可靠地實(shí)現(xiàn)了按摩椅中30個(gè)按鍵的處理。給出了硬件電路設(shè)計(jì)和軟件設(shè)計(jì)思想以及部分匯編代碼。
Abstract:
This paper chooses A/D conversion method to realize the keyboard interface of the controller by using ATmega168 microchip from Atmel Company.It accomplishes 30-key dealing sensitively and reliably in massage chair through skillfully selecting resistors in hardware circuit and using digital filter,dichotomy and area-judging method in software design.The hardware design circuit, software design idea and partly assembles code are presented mainly.
