亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频

蟲蟲首頁| 資源下載| 資源專輯| 精品軟件
登錄| 注冊

System-on-chip

  • 基于AT89C52單片機的語音錄放系統

       設計一種基于AT89C52的語音錄放系統,利用單片機、ISD2560語音錄放器件、麥克風、揚聲器等元器件實現硬件電路的設計,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。經軟硬件調試,結果表明該系統錄放效果良好,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.

    標簽: 89C C52 AT 89

    上傳時間: 2013-10-20

    上傳用戶:ywcftc277

  • 基于C8051F040的方位角測試系統

    提出一種基于C8051F040的炮塔方位角測試系統的設計方案,給出測試系統的各個模塊軟硬件設計。炮塔方位角測試系統集數據采集,數據傳輸和數據顯示等功能于一體,實現了炮塔方位角裝置的離線檢測。系統軟件采用C51編寫,對單片機進行有效電源管理,保證了系統的穩定性,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

    上傳時間: 2014-12-27

    上傳用戶:7891

  • 基于單片機和基站器件EM4095的手持式低頻RFID讀卡器

    介紹一種采用單片機技術和基站器件EM4095的手持式低頻RFID讀卡器方案。首先對整個系統框架進行說明,然后介紹主要功能模塊的設計,給出了各模塊的原理圖。重點描述了基站器件EM4095的性能參數和功能原理,最后描述了該系統的主程序流程圖。 Abstract:  In this paper,a handheld RFID reader based on MCU and EM4095 is introduced.At first,the configuration of this system is explained.Then the design of main modules and schematic documents are particularly presented.The parameters and principle of the chip EM4095 are introduced in detail. At last,the main software flow is given

    標簽: 4095 RFID EM 單片機

    上傳時間: 2013-10-18

    上傳用戶:windypsm

  • 基于DAC7512的數控直流恒流源設計

    為了解決磁放大器性能測試過程中,需要對其供給不同數值恒定電流的問題,設計了一種基于DAC7512和單片機的數控恒流源系統。該系統采用AT89C51作為主控器件,將計算機發送的電流控制字命令轉換為D/A轉換器控制字,通過模擬SPI通信接口,寫D/A控制字到DAC7512,從而控制其輸出相應數字電壓值,經差動縮放電路、電壓/電路變換電路和功率驅動電路,最后輸出恒定電流。實驗結果表明,恒流源輸出電流調節范圍為-45~+45 mA、精度為±0.1 mA,分辨率達0.024 4 mA,具有應用靈活,外圍電路簡單,可靠性高的特點。該數控直流恒流源也可為相關產品的測試系統研發提供參考。 Abstract:  In order to solve the need to supply different values constant current for the magnetic amplifier in testing process, numerical control constant current source system was designed based on DAC7512 chip and microcontroller technology. The system used the AT89C51 as the main chip, which can convert the current control word from computer into to D/A control words. And the system wrote D/A control word into the DAC7512 chip to control the output voltage value by the SPI communication interface, which can output corresponding constant current figures by scaling circuit, the V/I converter and power drive circuit. Experimental results show that the current source output current adjustment range is -45~+45mA, accuracy is ± 0.1mA, and resolution ratio is 0.024 4mA

    標簽: 7512 DAC 數控直流 恒流源

    上傳時間: 2014-12-27

    上傳用戶:invtnewer

  • C8051F320列車安全巡檢儀的設計

    提出了一種基于C8051F320的列車安全巡檢儀的設計方案,詳細闡述了巡檢儀的各個模塊的硬、軟件設計。巡檢儀集信息采集、軸溫檢測、照明和記錄存儲等功能于一體,實現了對列車安全巡檢工作有效的監督和科學管理。系統軟件采用C51編寫,對單片機進行有效的電源管理,保證了巡檢儀的穩定性、可靠性和低功耗性。 Abstract:  This paper puts forward a design of train safety inspection based on C8051F320,describes all modules hardware and software design of inspection instrument.The inspection instrument has the function of information collection, axle’s temperature detection, lighting and records storage.It can supervise and administer train safety inspection work effectively.The system software using C51 can manage the power of single chip microcomputer, and guarantee the stability, reliability and low power consumption of the inspection instrument.

    標簽: C8051F320 列車 儀的設計 巡檢

    上傳時間: 2013-12-22

    上傳用戶:落花無痕

  • 基于C8051F005單片機的參數測試儀的設計

    介紹了基于單片機航空交流電參數測試儀的系統設計。以Silicon Labs公司的C8051F005單片機為核心設計出數據采集板,通過RS-232串口與上位機通訊。運用Lab Windows/CVI編寫的上位機軟件實現信號的檢測以及波形和數據的顯示,給出了測試儀硬件電路的組成和軟件流程圖。本系統具有硬件結構簡單、容易實現和成本低等特點,在實際應用中其穩定性、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.

    標簽: C8051F005 單片機 儀的設計 參數測試

    上傳時間: 2013-11-18

    上傳用戶:wang5829

  • 多路溫度采集及監控系統的設計

    介紹一種基于單片機的多路溫度采集及監控系統,能夠測量6路溫度信號,具有計算機聯網功能,各測量點可以單獨監控和設置,可根據用戶的需求自動控制。測量溫度范圍為-10 ℃~200 ℃,控制方式采用模擬量調壓模式。該系統具有控制精度高、沖擊小等特點。 Abstract:  A temperature collecting and surveillance-controlling system based on sing-chip microcomputer is introduced. It can measure 6 channel signal of the temperature,and it has a function of network connection.The temperature measure points can be monitored and located, it can be controlled automatic according to user’s demand.The temperature range is -10℃ to 200℃.The model of control is adjustable voltage with simulation. It features high precision and little impact.

    標簽: 多路 溫度采集 監控系統

    上傳時間: 2013-10-23

    上傳用戶:bjgaofei

  • 基于MSP430F149的無線環境監測傳感器系統設計

    為了提高環境參數采集的自動化水平,提升效率,設計了無線傳感器系統。本系統運用了傳感器技術、通信技術和單片機技術,實現了對環境溫度、濕度、光照度以及可燃性氣體濃度等參數的檢測。它能夠實時地與上位機進行無線通信,滿足對環境參數實時監測的要求。 Abstract:  In order to increase the degree of automation and improve the efficiency of the environment monitoring parameters,the wireless sensor system was developed.Combining with the technique of sensor,automatic monitoring,communication and single-chip microcomputer,it realized real-time monitoring environment parameters,such as temperature,humidity,illumination,concentration of com- bustible gas and so on.At the same time it can communicate with upper personal computers,satisfy the desire of real-time monitoring.

    標簽: 430F F149 MSP 430

    上傳時間: 2013-11-22

    上傳用戶:longlong12345678

  • 基于C8051F930的管道溫度壓力遠程監測系統

       為解決輸油管道溫度壓力參數實時監測的問題,設計了以C8051F930單片機作為控制核心的超低功耗輸油管道溫度壓力遠程監測系統。現場儀表使用高精度電橋采集數據,通過433 MHz短距離無線通信網絡與遠程終端RTU進行通信,RTU通過GPRS網絡與PC上位機進行遠程數據傳輸,在上位機中實現數據存儲和圖形化界面顯示,從而實現輸油管道溫度壓力參數的實時監測和異常報警。經實驗證明,該系統的12位數據采集精度滿足設計要求,漏碼率小于1%,正常工作時間超過5個月,能實時有效地監測輸油管道的溫度壓力參數,節省大量人工成本,有效預防管道參數異常造成的經濟損失和環境污染。 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.

    標簽: C8051F930 溫度 壓力 遠程監測系統

    上傳時間: 2013-11-07

    上傳用戶:cuibaigao

  • MAX7456在可視倒車雷達中的應用

    為解決傳統可視倒車雷達視頻字符疊加器結構復雜,可靠性差,成本高昂等問題,在可視倒車雷達設計中采用視頻字符發生器芯片MAX7456。該芯片集成了所有用于產生用戶定義OSD,并將其插入視頻信號中所需的全部功能,僅需少量的外圍阻容元件即可正常工作。給出了以MAX7456為核心的可視倒車雷達的軟、硬件實現方案及設計實例。該方案具有電路結構簡單、價格低廉、符合人體視覺習慣的特點。經實際裝車測試,按該方案設計的可視倒車雷達視場清晰、提示字符醒目、工作可靠,可有效降低駕駛員倒車時的工作強度、減少倒車事故的發生。 Abstract:  A new video and text generation chip,MAX7456,was used in the design of video parking sensor in order to simplify system structure,improve reliability and reduce cost. This chip included all the necessary functions to generate user-defined OSDs and to add them into the video signals. It could be put into work with addition of just a small number of resistances and capacitors. This paper provided software and hardware implementation solutions and design example based on the chip. The system had the characteristics of simplicity in circuit structure,lower cost,and comfort for the nature of human vision. Loading road test demonstrates high video and text display quality and reliable performance,which makes the driver easy to see backward and reduces chance of accidents.

    標簽: 7456 MAX 可視倒車 中的應用

    上傳時間: 2013-12-10

    上傳用戶:qiaoyue

亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频
国产精品视频yy9099| 国产精品女人久久久久久| 久久久中精品2020中文| 久久久夜精品| 性欧美8khd高清极品| 国产午夜精品福利 | 久久青草久久| 影音先锋欧美精品| 亚洲女爱视频在线| …久久精品99久久香蕉国产| 欧美在线影院在线视频| 国产欧美在线播放| 久久超碰97中文字幕| 欧美日韩免费观看一区二区三区| 在线不卡欧美| 免费成人黄色| 狠狠色综合网| 欧美成人a视频| 91久久精品一区| 欧美视频成人| 香蕉久久夜色精品| 日韩一级二级三级| 久久频这里精品99香蕉| 国产一区久久久| 欧美高清视频在线观看| 久久九九精品| 日韩一区二区免费看| 国产一区二区按摩在线观看| 欧美日韩国产色视频| 久久露脸国产精品| 欧美成人精品一区| 夜夜嗨网站十八久久| 亚洲午夜电影在线观看| 91久久精品www人人做人人爽| 一区二区三区.www| 久久久久久久999精品视频| 欧美成人亚洲| 亚洲欧美视频| 欧美一级淫片播放口| 欧美日韩国产综合网| 亚洲美女毛片| 欧美日韩视频免费播放| 美女免费视频一区| 欧美在线一二三四区| 亚洲一区欧美二区| 一本久久青青| 99视频在线精品国自产拍免费观看| 狠狠入ady亚洲精品经典电影| 久久免费视频一区| 99在线精品视频| 亚洲资源av| 欧美亚洲三区| 在线视频欧美一区| 日韩视频在线观看一区二区| 亚洲第一网站| 一区二区三区精密机械公司 | 亚洲电影免费在线| 国产精品卡一卡二卡三| 欧美日韩国产黄| 欧美激情导航| 欧美日韩国产一级片| 欧美日韩国产免费| 欧美性一二三区| 国产精品日韩欧美| 国产欧美日韩视频一区二区三区 | 影音先锋中文字幕一区二区| 国产精品专区一| 欧美精品一区二区蜜臀亚洲| 免费成人av在线| 欧美在线免费视屏| 久久久久久久久久看片| 另类专区欧美制服同性| 欧美精品一区三区| 国产精品porn| 国产一区二区久久| 亚洲高清网站| 亚洲最快最全在线视频| 亚洲一区日韩在线| 久久精品免费| 欧美电影免费观看| 国产精品国码视频| 狠久久av成人天堂| 亚洲精品裸体| 性xx色xx综合久久久xx| 久久夜精品va视频免费观看| 欧美精品三级| 国产一区清纯| av成人免费在线| 久久精品国产免费| 欧美人成免费网站| 国产日韩欧美一区| 亚洲激情综合| 午夜精品久久久久久99热| 久久一二三四| 国产精品久久久久久久久久三级 | 欧美福利视频一区| 国产精品手机视频| 亚洲日本视频| 久久精品99国产精品| 欧美精品一区二区三区在线播放 | 久久精品理论片| 欧美激情片在线观看| 国产视频自拍一区| 日韩一二在线观看| 久久午夜羞羞影院免费观看| 国产精品va在线| 亚洲人体影院| 久久人人爽人人爽| 国产精品久久久久久久一区探花 | 国产九九精品视频| 亚洲日本免费电影| 午夜天堂精品久久久久| 欧美久久视频| 亚洲高清自拍| 久久久久久国产精品mv| 国产精品美女久久久免费| 亚洲乱码国产乱码精品精天堂 | 国产精品日韩精品| 亚洲精选一区| 男女激情视频一区| 黄色亚洲免费| 欧美专区日韩视频| 国产精品一区在线观看你懂的| 亚洲毛片在线免费观看| 免费成人黄色| 亚洲国产视频直播| 久久影视精品| 亚洲国产高清高潮精品美女| 久久久国产91| 国内久久视频| 久久深夜福利| 在线精品视频一区二区| 久久综合福利| 亚洲经典在线| 欧美日韩黄色大片| 亚洲私人黄色宅男| 国产精品五月天| 久久精品国产77777蜜臀| 国产精品久久午夜| 欧美日韩一区二区在线观看| 欧美激情四色| 欧美日韩一区精品| 国产亚洲人成a一在线v站| 国内在线观看一区二区三区| 在线观看国产一区二区| 国产精品99久久不卡二区| 欧美在线一二三区| 欧美精品一区二| 好看的亚洲午夜视频在线| 亚洲激情不卡| 久久精品99无色码中文字幕| 蜜月aⅴ免费一区二区三区| 欧美日韩高清在线| 国产日本欧美一区二区三区在线| 在线观看一区欧美| 欧美成在线观看| 欧美一区二区三区在线视频| 午夜久久久久| 欧美精品色一区二区三区| 午夜精品国产更新| 免费在线视频一区| 国产精品一区视频网站| 在线亚洲一区观看| 尤物在线精品| 一本色道久久综合亚洲精品按摩| 裸体丰满少妇做受久久99精品| 亚洲综合电影| 亚洲欧美成人一区二区三区| 欧美jjzz| 欧美中文字幕视频| 亚洲综合精品一区二区| 韩日午夜在线资源一区二区| 欧美主播一区二区三区美女 久久精品人 | 99在线|亚洲一区二区| 国产精品扒开腿做爽爽爽软件| 国产精品v欧美精品v日本精品动漫 | 亚洲大片精品永久免费| 欧美成人一区在线| 亚洲欧美日韩在线综合| 亚洲第一中文字幕在线观看| 欧美午夜剧场| 麻豆精品一区二区综合av | 欧美一区二区精品久久911| 伊人成人在线视频| 国产精品久久久久久久久久免费| 久久全球大尺度高清视频| 亚洲天堂网在线观看| 在线免费高清一区二区三区| 国产精品久久91| 欧美韩日高清| 久久综合色综合88| 午夜宅男欧美| 亚洲视屏在线播放| 日韩视频精品在线观看| 在线观看视频欧美| 国产一区欧美| 国产视频精品免费播放| 国产精品大片免费观看| 欧美mv日韩mv亚洲| 毛片精品免费在线观看|