MK7A23P是帶15 位（11bit+4bit）A/D轉(zhuǎn)換器的RISC高性能8位微控制器。它內(nèi)部包含2K字節(jié)的一次性可編程只讀存儲(chǔ)器、128字節(jié)數(shù)據(jù)存儲(chǔ)器、定時(shí)器/計(jì)數(shù)器、中斷、LVR（低電壓復(fù)位）、I/O 口、比較器和PWM輸出。
上傳時(shí)間： 2013-12-07
上傳用戶：hullow
針對(duì)科研實(shí)驗(yàn)中對(duì)拉壓千斤頂加載過(guò)程控制的需要，采用ATmega128單片機(jī)控制步進(jìn)電機(jī)進(jìn)而實(shí)現(xiàn)對(duì)執(zhí)行系統(tǒng)的電動(dòng)泵站實(shí)行自動(dòng)控制。對(duì)力和位移的數(shù)據(jù)采集與處理及用步進(jìn)電機(jī)控制電動(dòng)泵站手柄的技術(shù)細(xì)節(jié)作了重點(diǎn)描述。通過(guò)單片機(jī)的A/D變換器對(duì)AMP放大模塊采集的電橋信號(hào)作量化處理，千斤頂?shù)牟倏厥直恢靡离妱?dòng)油泵閥門開(kāi)啟的方向和大小作若干定位，單片機(jī)根據(jù)力或位移傳感器信號(hào)，實(shí)時(shí)控制步進(jìn)電機(jī)驅(qū)動(dòng)手柄旋轉(zhuǎn)到相應(yīng)操控位置。 Abstract: This article describes the use of ATmega128 AVR microcontroller series of DBS electric pumping stations and QF100/200 separate twoway hydraulic jack to automate the process of manipulating the work of the technical content. Articles on force and displacement data acquisition and processing， and stepper motor control electric pump with the handle of the key technical details were described. Through the MCU’s A / D converter module is collected on the AMP amplification quantify the signal bridge， jack handle position control valve opening according to the direction of electric pumps for a number of positioning and size of the microcontroller based on force or displacement sensor signals， real-time control stepper motor drive control handle rotate to the appropriate location.
標(biāo)簽： AVR 單片機(jī) 閉環(huán)控制
上傳時(shí)間： 2014-01-16
上傳用戶：hasan2015
設(shè)計(jì)了一種基于PIC16C71單片機(jī)的數(shù)字水溫配制閥。該配制閥采用NTC熱敏電阻作溫度傳感器，與固定電阻組成簡(jiǎn)單分壓電路作為水溫測(cè)量電路，利用PIC16C71單片機(jī)內(nèi)置的8位A/D轉(zhuǎn)換器把熱敏電阻上的模擬電壓轉(zhuǎn)換為數(shù)字量，PIC16C71單片機(jī)控制直流電機(jī)驅(qū)動(dòng)混水閥調(diào)節(jié)冷熱水的混合比例實(shí)現(xiàn)水溫調(diào)節(jié)。給出了控制電路圖，對(duì)水溫測(cè)量電路的參數(shù)選擇和測(cè)溫精度作了詳細(xì)討論。實(shí)驗(yàn)和分析表明，選用阻值較大的NTC熱敏電阻和分壓電阻可較好地解決熱敏電阻因功耗較大造成的熱擊穿問(wèn)題。 Abstract: A digital valve for controlling water temperature based on PIC16C71 was presented in this paper.A bleeder circuit which consisted of a NTC thermistor as temperature sensor and a fixed resistance was designed as water temperature measuring circuit.The analog voltage on the thermistor was converted into digital signal by a 8-bit A/D converter embedded in PIC16C71. Based on the digital signal， the MCU PIC16C71 drived the valve by a DC motor to adjust the water temperature through adjusting the proportion of hot water and cold water.The circuit diagram of controller was given，the principle，the component parameters and the accuracy of measuring temperatures were also dissertated in detail. It was found by experiment and analysis that thermal breakdown of thermistor caused by high power could be solved by selecting thermistor and fixed resistance with high impedance value.
上傳時(shí)間： 2013-11-08
上傳用戶：Yue Zhong
針對(duì)目前使用的RS232接口數(shù)字化B超鍵盤存在PC主機(jī)啟動(dòng)時(shí)不能設(shè)置BIOS，提出一種PS2鍵盤的設(shè)計(jì)方法。基于W78E052D單片機(jī)，采用8通道串行A/D轉(zhuǎn)換器設(shè)計(jì)了8個(gè)TGC電位器信息采集電路，電位器位置信息以鍵盤掃描碼序列形式發(fā)送，正交編碼器信號(hào)通過(guò)XC9536XL轉(zhuǎn)換為單片機(jī)可接收的中斷信號(hào)，軟件接收到中斷信息后等效處理成按鍵。結(jié)果表明，在滿足開(kāi)機(jī)可設(shè)置BIOS同時(shí)，又可實(shí)現(xiàn)超聲特有功能，不需要專門設(shè)計(jì)驅(qū)動(dòng)程序，接口簡(jiǎn)單，成本低。 Abstract: Aiming at the problem of the digital ultrasonic diagnostic imaging system keyboard with RS232 interface currently used couldn?蒺t set the BIOS when the PC boot， this paper proposed a design method of PS2 keyboards. Based on W78E052D microcontroller，designed eight TGC potentiometers information acquisition circuit with 8-channel serial A/D converter， potentiometer position information sent out with keyboard scan code sequentially.The control circuit based on XC9536 CPLD is used for converting the mechanical actions of the encoders into the signals that can be identified by the MCU， software received interrupt information and equivalently treatmented as key. The results show that the BIOS can be set to meet the boot， ultrasound specific functionality can be achieved at the same time， it does not require specially designed driver，the interface is simple and low cost.
標(biāo)簽： 單片機(jī) B超 數(shù)字化 鍵盤設(shè)計(jì)
上傳時(shí)間： 2013-10-10
上傳用戶：asdfasdfd
第一章：MCS-51系列單片機(jī)的存儲(chǔ)結(jié)構(gòu)(4學(xué)時(shí)) ① 掌握內(nèi)部數(shù)據(jù)寄存器RAM的結(jié)構(gòu)、用途和特點(diǎn); ② 程序存儲(chǔ)器ROM的結(jié)構(gòu)特點(diǎn)，編程中應(yīng)注意的問(wèn)題; ③ 片內(nèi)、外程序存儲(chǔ)器的確定方法。 .. 第二章：MCS-51單片機(jī)指令系統(tǒng)及時(shí)序(4學(xué)時(shí)) ① 111條指令的功能分類; ② 指令的尋址方式; ③ 偽指令及匯編語(yǔ)言源程序的格式; ④ 與指令的相關(guān)時(shí)序。 第三章：MCS-51單片機(jī)內(nèi)部模塊的功能介紹(8學(xué)時(shí)) ① 內(nèi)部并行I/O端口的結(jié)構(gòu)特點(diǎn)、使用中的注意事項(xiàng); ② 定時(shí)/計(jì)數(shù)器的2種工作方式、4種計(jì)數(shù)模式; ③ 串行接口的4種工作模式的設(shè)定及波特率的計(jì)算; ④ 中斷系統(tǒng)的結(jié)構(gòu)、中斷響應(yīng)的過(guò)程和編程方法。 .. 第四章：MCS-51單片機(jī)系統(tǒng)的擴(kuò)展及應(yīng)用(8學(xué)時(shí)); ① 系統(tǒng)擴(kuò)展的幾種方法; ② 外部程序、數(shù)據(jù)存儲(chǔ)器的擴(kuò)展; ③ A/D、D/A轉(zhuǎn)換器與單片機(jī)的接口電路及編程方法; ④ 鍵盤掃描/動(dòng)態(tài)顯示接口電路; ⑤ 單片機(jī)的監(jiān)控電路等。
標(biāo)簽： 單片機(jī) 綜合設(shè)計(jì)
上傳時(shí)間： 2013-10-17
上傳用戶：熊少鋒
摘 要: 閥門開(kāi)度儀以AT89C51單片機(jī)為核心, 通過(guò)在閥門電機(jī)軸上安裝的電位計(jì)傳感器獲得閥 門電機(jī)軸的轉(zhuǎn)動(dòng)角位移, 從而得出閥門的開(kāi)度, 達(dá)到自動(dòng)檢測(cè)的目的。詳細(xì)介紹了串行控制的10 位A /D轉(zhuǎn)換器TLC1549的特點(diǎn)和功能, 說(shuō)明了TLC1549與AT89C51單片機(jī)在閥門開(kāi)度儀中的硬件 電路和軟件程序。實(shí)踐證明, 該閥門開(kāi)度儀數(shù)據(jù)采集準(zhǔn)確可靠、工作穩(wěn)定。 關(guān)鍵詞: TLC1549; AT89C51單片機(jī); 閥門開(kāi)度
標(biāo)簽： 1549 TLC 閥門開(kāi)度儀
上傳時(shí)間： 2013-10-14
上傳用戶：行者Xin
摘要：為了解決信號(hào)采集系統(tǒng)的同步串行通訊問(wèn)題，在理解AVR 單片機(jī)SPI接口的通訊原 理和方法的基礎(chǔ)上，分析了AVR 單片機(jī)SPI接口的工作過(guò)程，設(shè)計(jì)了AVR單片機(jī)和串行A/ D轉(zhuǎn)換器的同步串行通訊接口，并用程序描述了SPI接口通訊的過(guò)程，實(shí)現(xiàn)了AVR單片機(jī) 通過(guò)SPI接口與串行A/D轉(zhuǎn)換器之間的數(shù)據(jù)通訊。最后，用實(shí)驗(yàn)和數(shù)據(jù)分析驗(yàn)證了設(shè)計(jì)方 案的可行性。 關(guān)鍵詞：SPI接口；AVR單片機(jī)；串行A/D
標(biāo)簽： AVR SPI 單片機(jī) 串行AD
上傳時(shí)間： 2013-10-31
上傳用戶：lilei900512
以C8051F020為核心處理器，設(shè)計(jì)無(wú)線傳感器網(wǎng)絡(luò)數(shù)據(jù)采集系統(tǒng)。系統(tǒng)采用SZ05-ADV型無(wú)線通訊模塊組建Zigbee無(wú)線網(wǎng)絡(luò)，結(jié)合嵌入式系統(tǒng)的軟硬件技術(shù)，完成終端節(jié)點(diǎn)的8路傳感器信號(hào)的數(shù)據(jù)采集。現(xiàn)場(chǎng)8路信號(hào)通過(guò)前端處理后，分別送入C8051F020的12位A/D轉(zhuǎn)換器進(jìn)行轉(zhuǎn)換。經(jīng)過(guò)精確處理、存儲(chǔ)后的現(xiàn)場(chǎng)數(shù)據(jù)，通過(guò)Zigbee無(wú)線網(wǎng)絡(luò)傳送到上位機(jī)，系統(tǒng)可達(dá)到汽車試驗(yàn)中無(wú)線測(cè)試的目的。 Abstract: This paper designs a wireless sensor network system for data acquisition with C8051F020 as core processors.The system used SZ05-ADV wireless communication module，set up a Zigbee wireless network， combined with hardware and software technologies of embedded systems，completed the end-node 8-locale sensor signal data acquisition.Eight locale signals were sent separately into the 12-bit ADC of C8051F020 for conversion through front treatment.After accurate processing and storage，the locale data was transmitted to the host computer through Zigbee wireless.The system achieves the purpose of wireless testing in vehicle trial.
標(biāo)簽： C8051F020 Zigbee 汽車測(cè)試 系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2013-11-23
上傳用戶：dsgkjgkjg
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.
標(biāo)簽： C8051F020 單片機(jī) 多路 壓力
上傳時(shí)間： 2013-11-16
上傳用戶：yare
前言 自從盛群半導(dǎo)體公司成立以來(lái)，即致力于單片機(jī)產(chǎn)品的設(shè)計(jì)與開(kāi)發(fā)。雖然盛群半導(dǎo)體提供給客戶各式各樣的半導(dǎo)體器件，但其中單片機(jī)仍是盛群的主要關(guān)鍵產(chǎn)品，未來(lái)盛群半導(dǎo)體仍將繼續(xù)擴(kuò)展單片機(jī)產(chǎn)品系列完整性與功能性。通過(guò)長(zhǎng)期累積的單片機(jī)研發(fā)經(jīng)驗(yàn)與技術(shù)，盛群半導(dǎo)體能為各式各樣的應(yīng)用范圍開(kāi)發(fā)出高性能且低價(jià)位的單片機(jī)芯片。許多連接到外部感應(yīng)器的重要應(yīng)用需要處理模擬信號(hào)，所有的這些應(yīng)用，在它們可以被單片機(jī)處理之前需要通過(guò)一個(gè)A/D轉(zhuǎn)換器做模數(shù)信號(hào)的轉(zhuǎn)換。為了滿足這些需求，盛群開(kāi)發(fā)出A/D系列的單片機(jī)，除了擁有I/O系列的所有特性和功能外，還含有集成的多通道A/D轉(zhuǎn)換器，它的解析度和通道個(gè)數(shù)可調(diào)。而PWM功能和I2C接口，則進(jìn)一步增加了A/D系列單片機(jī)的功能和應(yīng)用的可行性。
上傳時(shí)間： 2013-12-05
上傳用戶：waitingfy
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