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  • 基于8051F330的音頻信號(hào)發(fā)生器的設(shè)計(jì)

     MMC/SD卡以其優(yōu)越的性能,在單片機(jī)嵌入式設(shè)備中得到廣泛應(yīng)用。將MMC/SD卡作為外部掉電存儲(chǔ)介質(zhì)應(yīng)用于音頻信號(hào)發(fā)生器中,通過(guò)8051F330單片機(jī)上的SPI接口,實(shí)現(xiàn)單片機(jī)—MMC/SD卡的存儲(chǔ)擴(kuò)展,設(shè)計(jì)了此硬件平臺(tái)上的MMC/SD卡的單片機(jī)驅(qū)動(dòng)程序,并給出了相應(yīng)的程序代碼,滿足音頻信號(hào)發(fā)生器的大容量存儲(chǔ)要求。 Abstract:  MMC/SD card is more and more widely used in the single chip embedded devices for their excellent performances.This article introduces the application of MMC/SD card as the external power down storage medium in audio signal generator. The extension technology especially for storage of single chip-MMC/SD card via SPI interfaces in 8051F330 single chip, including designs single chip drive program of MMC/SD card based on hardware platform,and also gives the key coding of the program. The implementation of big capacity storage is meaningful in audio signal generator.

    標(biāo)簽: 8051F330 音頻信號(hào) 發(fā)生器

    上傳時(shí)間: 2014-12-27

    上傳用戶:黃華強(qiáng)

  • 基于ATmega48單片機(jī)的可調(diào)交流電子負(fù)載的設(shè)計(jì)

    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.

    標(biāo)簽: ATmega 48 單片機(jī) 交流電子

    上傳時(shí)間: 2013-11-23

    上傳用戶:蟲蟲蟲蟲蟲蟲

  • 基于C8051F005單片機(jī)的參數(shù)測(cè)試儀的設(shè)計(jì)

    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.

    標(biāo)簽: C8051F005 單片機(jī) 儀的設(shè)計(jì) 參數(shù)測(cè)試

    上傳時(shí)間: 2013-11-18

    上傳用戶:wang5829

  • TLC1549串口傳輸與單片機(jī)的AD設(shè)計(jì)

    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.

    標(biāo)簽: 1549 TLC 串口 傳輸

    上傳時(shí)間: 2014-07-16

    上傳用戶:blans

  • 基于單片機(jī)與ADS1121的示波器數(shù)字多用表實(shí)現(xiàn)

    以FPGA為數(shù)字邏輯平臺(tái),借助繼電器矩陣和多路模擬開關(guān),以ADS1211為核心,在單片機(jī)控制下,聯(lián)合實(shí)現(xiàn)手持式虛擬/智能存儲(chǔ)示波表中數(shù)字多用表功能,實(shí)驗(yàn)表明該設(shè)計(jì)是行之有效的。文中介紹了數(shù)字多用表的系統(tǒng)結(jié)構(gòu),重點(diǎn)討論了其測(cè)量電路和智能控制方案。   Abstract:  The digital multimeter in virtual/intellect digital-oscillorgaph was fulfilled, which was controlled by singlechip computer by relay matrix and analogue switches,in which FPGA was used for digital logical plot-form, ADS1211 for kernel chip, the experiment showed the design was feasible, the system struction was present-ed in the paper, measure circuit and intellect control plan of digital multimeter were mainly given.

    標(biāo)簽: 1121 ADS 單片機(jī) 示波器

    上傳時(shí)間: 2013-11-02

    上傳用戶:瓦力瓦力hong

  • 高性價(jià)比單片機(jī)P89LPC932及其應(yīng)用

    P89LPC932是Philips公司推出的高性價(jià)比單片機(jī),該器件內(nèi)含增強(qiáng)型CPU,同一工作頻率下的速度為標(biāo)準(zhǔn)80C51單片機(jī)的6倍。文中介紹了P89LPC932的主要特點(diǎn),給出了基于P89LPC932的車輛數(shù)據(jù)采集系統(tǒng)的組成框圖。 Abstract:  The Philips P89LPC932 is a high cost-effective 8051-based microcontroller.High performance 2-clock 80C51 CPU providing 6 times the preformance of the standard 80C51.The main characteristic of P89LPC932? and its application in vehicle data collection system are given.

    標(biāo)簽: P89 LPC 932 89

    上傳時(shí)間: 2013-10-28

    上傳用戶:gyq

  • 文字轉(zhuǎn)發(fā)音單片處理器WTS701的原理及應(yīng)用

    WTS701是華邦公司推出的內(nèi)建喇叭驅(qū)動(dòng)功能的“文字轉(zhuǎn)發(fā)音”單芯片集成電路。該芯片將連續(xù)運(yùn)算法與華邦專有的多層次儲(chǔ)存技術(shù)相結(jié)合,從而實(shí)現(xiàn)了真正將“文字轉(zhuǎn)發(fā)音”的完整功能。文中介紹了該芯片的原理及典型應(yīng)用,給出了Cygnal F120 MPU與WTS701 的接口電路,并根據(jù)相應(yīng)的芯片指令給出了其控制軟件的代碼程序。 Abstract:  WTS701 is really a single chip on “text-to-speech” produced by Winbond company building-in algorithm with the company's patented multi-level storageMLS technology熏 different from other chips that “text-to-speech” on the market at present. The principle and typical application of this chip are introduced in this article the interface circuit of Cygnal F120 MPU and WTS701 is presented. The corresponding? control software is provided.

    標(biāo)簽: WTS 701 發(fā)音 單片處理

    上傳時(shí)間: 2013-10-08

    上傳用戶:旗魚旗魚

  • 基于DS1991和PIC單片機(jī)的智能水卡設(shè)計(jì)

    DS1991是一種多密鑰信息紐扣,文章介紹了DS1991的主要特點(diǎn)、工作原理及讀寫方法。給出了一種基于DS1991和PIC單片機(jī)的智能水卡設(shè)計(jì)方案,同時(shí)給出了整個(gè)系統(tǒng)的硬件組成原理和軟件設(shè)計(jì)方法。 Abstract:  DS1991 is a multikey iButton. The characteristic operation principle and the way of read/write of DS1991 are introduced in the paper. A smart water card based on DS1991 and PIC singlechip is presented the design of hardware and software are also given

    標(biāo)簽: 1991 PIC DS 單片機(jī)

    上傳時(shí)間: 2013-11-06

    上傳用戶:李彥東

  • 基于PIC單片機(jī)的光電感煙探測(cè)器設(shè)計(jì)

    介紹了點(diǎn)型光電感煙探測(cè)器的工作原理,闡述了PIC16F676單片機(jī)的特殊功能,同時(shí)給出了該功能在探測(cè)器設(shè)計(jì)中的應(yīng)用方法,最后給出了基于PIC16F676單片機(jī)設(shè)計(jì)的探測(cè)器的硬件構(gòu)成和軟件程序。 Abstract:  To begin with ,the principle of point type optical smoke detector is simply introduced and then the spe-cific functions of PIC16F676 are emphatically illuminated and it is also expounded that how to apply the specific functions in design of the detector.Furthermore the hardware and software design of detector are provided.

    標(biāo)簽: PIC 單片機(jī) 光電 感煙探測(cè)器

    上傳時(shí)間: 2013-11-18

    上傳用戶:hanwudadi

  • 基于C8051F930的管道溫度壓力遠(yuǎn)程監(jiān)測(cè)系統(tǒng)

       為解決輸油管道溫度壓力參數(shù)實(shí)時(shí)監(jiān)測(cè)的問(wèn)題,設(shè)計(jì)了以C8051F930單片機(jī)作為控制核心的超低功耗輸油管道溫度壓力遠(yuǎn)程監(jiān)測(cè)系統(tǒng)?,F(xiàn)場(chǎng)儀表使用高精度電橋采集數(shù)據(jù),通過(guò)433 MHz短距離無(wú)線通信網(wǎng)絡(luò)與遠(yuǎn)程終端RTU進(jìn)行通信,RTU通過(guò)GPRS網(wǎng)絡(luò)與PC上位機(jī)進(jìn)行遠(yuǎn)程數(shù)據(jù)傳輸,在上位機(jī)中實(shí)現(xiàn)數(shù)據(jù)存儲(chǔ)和圖形化界面顯示,從而實(shí)現(xiàn)輸油管道溫度壓力參數(shù)的實(shí)時(shí)監(jiān)測(cè)和異常報(bào)警。經(jīng)實(shí)驗(yàn)證明,該系統(tǒng)的12位數(shù)據(jù)采集精度滿足設(shè)計(jì)要求,漏碼率小于1%,正常工作時(shí)間超過(guò)5個(gè)月,能實(shí)時(shí)有效地監(jiān)測(cè)輸油管道的溫度壓力參數(shù),節(jié)省大量人工成本,有效預(yù)防管道參數(shù)異常造成的經(jīng)濟(jì)損失和環(huán)境污染。 Abstract:  In order to solve the problems on real-time monitoring of pipeline temperature and pressure parameters, the ultra-low power remote pipeline temperature and pressure monitoring system was designed by using the single chip processor C8051F930 as the control core. The high-precision electric bridge was used in field instruments for data collection, the 433MHz short-range wireless communication network was used to make communication between field instrument and RTU, the GPRS was used by the RTU to transmit data to the PC host computer, and the data was stored and displayed in the PC host computer, so the real-time monitoring and exception alerts of pipeline temperature and pressure parameters were achieved. The experiment proves that the system of which error rate is less than 1% over five months working with the 12-bit data acquisition accuracy can effectively monitor the pipeline temperature and pressure parameters in real time, it saves a lot of labor costs and effectively prevents environmental pollution and economic losses caused by abnormal channel parameters.

    標(biāo)簽: C8051F930 溫度 壓力 遠(yuǎn)程監(jiān)測(cè)系統(tǒng)

    上傳時(shí)間: 2013-11-07

    上傳用戶:cuibaigao

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