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Semantic-based

  • 基于AVR單片機(jī)的船舶氣象儀測(cè)試系統(tǒng)的設(shè)計(jì)

       針對(duì)船舶氣象儀保障維修而設(shè)計(jì)的船舶氣象儀測(cè)試系統(tǒng),包括信息處理終端、主儀器檢測(cè)模塊、傳感器檢測(cè)模塊,各個(gè)模塊都采用基于AVR單片機(jī)的嵌入式系統(tǒng),模塊之間通過(guò)CAN總線進(jìn)行通信。結(jié)果表明,船舶氣象儀測(cè)試系統(tǒng)能夠快速檢測(cè)船舶氣象儀故障,與單純依靠人工方式排查故障相比,故障檢測(cè)時(shí)間縮短了60%以上。 Abstract:  The test system of ship meteorological instrument was developed to satisfy the maintenance of ship meteorological instruments,which composed of information processing terminal, testing module of main instrument and testing module of sensors. Each of these modules included an embedded system based on microcontroller of AVR series and communicated with other module by CAN bus. The results show that the test system can judge the fault of ship meteorological instrument quickly and shorten the fault detection time as much as 60% compared with simple manual troubleshooting.

    標(biāo)簽: AVR 單片機(jī) 氣象儀 測(cè)試系統(tǒng)

    上傳時(shí)間: 2013-11-23

    上傳用戶:stvnash

  • 基于IC卡的新型供暖計(jì)費(fèi)系統(tǒng)設(shè)計(jì)

    將現(xiàn)行的供暖計(jì)費(fèi)方式由按建筑面積計(jì)費(fèi)變?yōu)榘聪牡臒崮苡?jì)費(fèi)是供暖計(jì)費(fèi)方式發(fā)展趨勢(shì),為了滿足這一計(jì)費(fèi)方式變化的需要,設(shè)計(jì)了基于IC卡的預(yù)付費(fèi)式新型供暖計(jì)費(fèi)系統(tǒng),通過(guò)測(cè)量用戶采暖系統(tǒng)進(jìn)出口的溫度和流量,計(jì)算用戶消耗的熱能,利用IC卡記錄用戶預(yù)付費(fèi)的金額和當(dāng)年熱能的單價(jià),根據(jù)熱能消耗和當(dāng)年熱能的單價(jià)計(jì)算用戶采暖費(fèi),根據(jù)實(shí)際發(fā)生的供暖費(fèi)用和預(yù)付費(fèi)金額控制供暖的開(kāi)停,這一計(jì)費(fèi)方式的變化使供暖計(jì)費(fèi)更趨合理。 Abstract:  It is trend that the mode of heat charging is changed from billing by building area to by thermal energy. In order to meet the needs of heat charging mode changing, a new system of heat charging based on IC card is proposed. The user?蒺s energy consumption is calculated by measuring the user inlet and outlet temperature and flow,using the IC card to record the prepaid amount and the current price of heat. The user?蒺s heating costs is calculated according to energy consumption and current price, according to actual heating costs and prepaid amount,the system controls the heating opening or stopping. It is more reasonable that calculated heating costs by user heat consumption

    標(biāo)簽: IC卡 計(jì)費(fèi) 系統(tǒng)設(shè)計(jì)

    上傳時(shí)間: 2013-10-14

    上傳用戶:大融融rr

  • 基于單片機(jī)AT89C51的MP3播放系統(tǒng)的設(shè)計(jì)方案

    提出一種基于單片機(jī)AT89C51SND1C的MP3播放系統(tǒng)的設(shè)計(jì)方案。單片機(jī)集成了專用的解碼器,使用K9F1208閃存作為外存儲(chǔ)器,放音電路采用CS4330,存儲(chǔ)文件通過(guò)播放器上的USB接口設(shè)備從PC機(jī)上直接下載,液晶顯示采用LCD1602。方案設(shè)計(jì)簡(jiǎn)單,性價(jià)比高,低功耗,易擴(kuò)展。由于采用的是通用單片機(jī)實(shí)現(xiàn)的,可以很容易地移植到其他微控制器系統(tǒng)中,有很強(qiáng)的市場(chǎng)競(jìng)爭(zhēng)能力和實(shí)用價(jià)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.

    標(biāo)簽: 89C C51 MP3 AT

    上傳時(shí)間: 2014-12-27

    上傳用戶:佳期如夢(mèng)

  • 基于MSP430單片機(jī)和DS18B20的數(shù)字溫度計(jì)

    為了在工業(yè)生產(chǎn)及過(guò)程控制中準(zhǔn)確測(cè)量溫度,設(shè)計(jì)了一種基于低功耗MSP430單片機(jī)的數(shù)字溫度計(jì)。整個(gè)系統(tǒng)通過(guò)單片機(jī)MSP430F1121A控制DS18B20讀取溫度,采用數(shù)碼管顯示,溫度傳感器DS18B20與單片機(jī)之間通過(guò)串口進(jìn)行數(shù)據(jù)傳輸。MSP430系列單片機(jī)具有超低功耗,且外圍的整合性高,DS18B20只需一個(gè)端口即可實(shí)現(xiàn)數(shù)據(jù)通信,連接方便。通過(guò)多次實(shí)驗(yàn)證明,該系統(tǒng)的測(cè)試結(jié)果與實(shí)際環(huán)境溫度一致,除了具有接口電路簡(jiǎn)單、測(cè)量精度高、誤差小、可靠性高等特點(diǎn)外,其低成本、低功耗的特點(diǎn)使其擁有更廣闊的應(yīng)用前景。 Abstract:  In order to obtain accurate measuring temperature in industrial production and process control, a digital thermometer based on MSP430 MCU is designed. The system uses MSP430F1121A MCU to control DS18B20, and gets the temperature data, which is displayed on the LED. The temperature sensor DS18B20 and MCU transmit data through serial communication. MSP430 series has ultra-low power and high integration, DS18B20 only needs one port to achieve data communication. Through many experimental results prove, this system is consistent with actual environment temperature. The system has characteristics of interface circuit simple, high measuring accuracy, minor error, high reliability, besides, the characteristics of low cost and low power make it having vaster application prospect.

    標(biāo)簽: MSP 430 18B B20

    上傳時(shí)間: 2013-10-16

    上傳用戶:wettetw

  • 基于自編程功能的MCU Bootloader設(shè)計(jì)

    Bootloader是微處理器上電時(shí)運(yùn)行的第一段代碼,它可以通過(guò)通信接口實(shí)現(xiàn)對(duì)微處理器內(nèi)部應(yīng)用程序的更新升級(jí),為網(wǎng)絡(luò)化嵌入式產(chǎn)品的應(yīng)用程序升級(jí)帶來(lái)極大的便利。由于目前沒(méi)有統(tǒng)一嵌入式系統(tǒng)的Bootloader。基于NEC 78K0系列單片機(jī)自編程原理,設(shè)計(jì)出一個(gè)適用于78K0/Fx2系列單片機(jī)的Bootloader,并能夠通過(guò)單片機(jī)串口在線升級(jí)應(yīng)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.

    標(biāo)簽: Bootloader MCU 自編程

    上傳時(shí)間: 2013-10-26

    上傳用戶:fang2010

  • 基于AT89S52 的水溫控制系統(tǒng)的設(shè)計(jì)

    本文介紹了基于AT89C52 單片機(jī)的自動(dòng)水溫控制系統(tǒng)的設(shè)計(jì)及實(shí)現(xiàn)過(guò)程。該系統(tǒng)具有實(shí)時(shí)顯示、溫度測(cè)量、溫度設(shè)定并能根據(jù)設(shè)定值對(duì)環(huán)境溫度進(jìn)行調(diào)節(jié)實(shí)現(xiàn)控溫的目的以及達(dá)到上下限溫度報(bào)警功能,控制算法是基于數(shù)字PID 算法。關(guān)鍵詞 :PID AT89C52 脈寬調(diào)制 實(shí)時(shí) Abstract : This article describes AT89C52 single-chip microcomputer-basedautomatic water temperature control system design and implementation process. Thesystem has real-time display, temperature measurement, temperature settings and theenvironment in accordance with the temperature settings adjusted to achieve thepurpose of temperature control and reach the upper and lower limits of temperaturealarm function, the control algorithm is based on the digital PID algorithm.Keyword: PID AT89C52 PWM real time

    標(biāo)簽: 89S S52 AT 89

    上傳時(shí)間: 2013-10-10

    上傳用戶:歸海惜雪

  • 基于AT89C52單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)設(shè)計(jì)

    基于AT89C52單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)設(shè)計(jì) 摘 要: 提出了一個(gè)由AT89C52單片機(jī)控制步進(jìn)電機(jī)的實(shí)例。可以通過(guò)鍵盤輸入相關(guān)數(shù)據(jù), 并根據(jù)需要, 實(shí)時(shí)對(duì)步進(jìn)電機(jī)工作方式進(jìn)行設(shè)置, 具有實(shí)時(shí)性和交互性的特點(diǎn)。該系統(tǒng)可應(yīng)用于步進(jìn)電機(jī)控制的大多數(shù)場(chǎng)合。實(shí)踐表明, 系統(tǒng)性能優(yōu)于傳統(tǒng)的步進(jìn)電機(jī)控制器。 關(guān)鍵詞: 單片機(jī); 步進(jìn)電動(dòng)機(jī); 直流固態(tài)繼電器; 實(shí)時(shí)控制 ABSTRACT: A stepp ing motor control system based on AT89C52 chip microcomputer was described.The data can be inputwith keyboard, and stepp ingmotorwas controlled by these data. According to the demand, users can set the workingmodel of stepp ingmotor in real2time. This system can be widely used in stepp ing motor controlling. The p ractice showed that the performance of this system outdid the tradi-tional stepp ing motor controller.

    標(biāo)簽: 89C C52 AT 89

    上傳時(shí)間: 2013-11-22

    上傳用戶:vodssv

  • LPC1769 LPC1768 LPC1767 LPC176

    The LPC1769/68/67/66/65/64 are ARM Cortex-M3 based microcontrollers for embedded applications featuring a high level of integration and low power consumption. The ARM Cortex-M3 is a next generation core that offers system enhancements such as enhanced debug features and a higher level of support block integration.

    標(biāo)簽: LPC 1769 1768 1767

    上傳時(shí)間: 2014-02-20

    上傳用戶:13215175592

  • MC9S08QG8英文資料 pdf

    MC9S08QG8英文資料 The MC9S08QG8 is the newest member of the Freescale 8-bit family of highly integratedmicrocontrollers, based on the high-performance yet low power HCS08 core. The MC9S08QG8is an excellent solution for power-sensitive applications with extended battery life and maximum performance down to 1.8VDC.

    標(biāo)簽: MC9 S08 QG8

    上傳時(shí)間: 2014-12-28

    上傳用戶:dxxx

  • 單片機(jī)在健身車轉(zhuǎn)速測(cè)量中的應(yīng)用

    本文介紹了一種基于單片機(jī)的健身車轉(zhuǎn)速測(cè)量系統(tǒng)。該系統(tǒng)具有電路簡(jiǎn)單、使用方便等特點(diǎn)。文中詳細(xì)介紹了該系統(tǒng)的工作原理,并且給出了它的硬件原理圖和軟件設(shè)計(jì)程序框圖。關(guān)鍵詞:轉(zhuǎn)速 單片機(jī) 測(cè)量ABSTRACT :This paper introduces a measuring system of the rotational velocity of exercise bike based on single - chip microcomputer . It has such advantages : simple circuit ,convenient use and so on. The work principle is presented in detail in this paper and the block diagram of hardware and program flow chart are giv2 en as well .KEYWORDS :Rotational velocity  Single - chip microcomputer  Measuring

    標(biāo)簽: 單片機(jī) 中的應(yīng)用 轉(zhuǎn)速測(cè)量

    上傳時(shí)間: 2013-11-02

    上傳用戶:源弋弋

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