基于單片機AT89C2051的九路多功能智力競賽搶答器的設計
上傳時間: 2013-10-13
上傳用戶:YUANQINHUI
8路遙控搶答器
上傳時間: 2013-11-17
上傳用戶:sunjet
基于AT89S51單片機的頻率可調的方波信號發生器
上傳時間: 2014-12-26
上傳用戶:jkhjkh1982
袖珍型電子日歷及8路長時間定時控制器程序
上傳時間: 2013-10-29
上傳用戶:agent
四路搶答器的設計和制作,搶答用的
標簽: 四路搶答器
上傳時間: 2013-11-02
上傳用戶:ouyangmark
介紹了一種基于C8051F020單片機的多路壓力測量儀。該測量儀選用電阻應變式壓力傳感器采集壓力信號,并經放大電路處理后送入C8051F020單片機,再由C8051F020單片機內部的A/D轉換器將采集到的壓力信號進行模數轉化,然后分別對數據進行存儲和顯示。該測量儀能測量6路壓力信號,并且各測量點都能單獨檢測和設置。由于采用了C8051F020單片機,簡化了硬件電路,增強了抗干擾能力,使得測量儀具有測量精度高,沖擊小等特點。 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.
上傳時間: 2013-11-16
上傳用戶:yare
主要介紹了以PIC18F2480單片機為處理器,基于可編程多路開關檢測接口器件MC33993實現的車用多路開關檢測接口電路的設計。該設計克服了以往基于分立元件的檢測接口電路的弊端,簡化了接口電路設計,保證了車用開關工作的可靠性和安全性。 Abstract: The design of automotive multiple switch detection interface circuit based on MC33993 is introduced mainly which adopts PIC18F2480 single chip microprocessor.This circuit overcomes shortage of traditional design which contains many schism elements, and the application of MC33993 also predigests the whole design of interface circuit and guarantees the dependability and security of the switch.
上傳時間: 2013-11-19
上傳用戶:star_in_rain
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.
上傳時間: 2013-10-23
上傳用戶:bjgaofei
以FPGA為數字邏輯平臺,借助繼電器矩陣和多路模擬開關,以ADS1211為核心,在單片機控制下,聯合實現手持式虛擬/智能存儲示波表中數字多用表功能,實驗表明該設計是行之有效的。文中介紹了數字多用表的系統結構,重點討論了其測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.
上傳時間: 2013-11-02
上傳用戶:瓦力瓦力hong
提出了采用兩段式同軸波紋慢波結構實現雙頻高功率微波輸出的相對論返波振蕩器, 推導了該結構的TM0n模式色散方程,數值求解了兩段式同軸波紋慢波結構TM0n模色散曲線,分析了該器件X波段雙頻高功率微波輸出的產生機理, 分析中考慮了電子注在慢波結構第二段工作效率不變和下降時的雙頻工作點情況,并運用2.5 維全電磁粒子模擬程序驗證了雙頻微波信號的可靠性。關鍵詞高功率微波;雙頻;X 波段;相對論返波振蕩器 當前, 應用于高功率微波效應的微波器件只有一個主頻率,已有的實驗結果表明,在現有條件下,單頻高功率微波用于攻擊敵方的電子系統所需的功率遠遠大于單只高功率微波源所能產生的功率,即破壞閾值很高[1]。但是,如果用兩個或多個頻率相近的高功率微波波束產生拍頻后用于攻擊電子系統,那么所需的功率密度將大大減小,即效應閾值大大下降, 采用這種方式將有可能在現有的技術下使高功率微波實用化[2],但是雙頻及多頻高功率微波源器件的研究目前是十分前沿的課題,處于剛起步階段,在國內外極少有報道[2~4],因而,用單個微波源器件產生穩定輸出的雙頻甚至多頻高功率微波具有重要的實際應用價值和學術價值,是高功率微波領域又一個新興的研究方向, 在高功率微波武器和新體制雷達等方面將有良好的應用前景。
上傳時間: 2013-10-31
上傳用戶:kxyw404582151