詳細介紹工控軟件組態王與單片機多機串口通訊的設計原理。分析組態王提供的直接與單片機串口通信方法的優點，給出系統基于RS-485總線傳輸的接口電路原理圖。根據組態王提供的通訊協議和單片機多機串口通訊的原理，給出程序設計流程與思路。 Abstract: In this paper，the design principle of communication between multi-SCM and KingView by serial ports is described in detail.We analysis the advantage of method supplied by KingView,by which KingView can communicate with serial ports of SCM directly，and provide the system’s interface circuit based on the RS-485transmission line.We provide flow diagram of programming and thinking on the basis of communication protocol supplied by KingView and principle of communication among multi-SCM through serial ports.
上傳時間： 2013-12-19
上傳用戶：tecman
以89S52單片機和EP1C6Q240C8型FPGA為控制核心的多功能計數器，是由峰值檢波、A/D轉換、程控放大、比較整形、移相網絡部分組成,可實現測量正弦信號的頻率、周期和相位差的功能。多功能計數器采用等精度的測量方法，可實現頻率為1Hz～10MHz、幅度為0.01～5Vrms的正弦信號的精確測頻，以及頻率為10Hz～100kHz、幅度為0.5～5Vrms的正弦信號精確測相。液晶顯示器能夠實時顯示當前信號的頻率、周期和相位差。該多功能計數器精度高，界面友好，實用性強。 Abstract: A multi-function counter，which uses89S52MCU and EP1C6Q240C8FPGA as a control core，consists of peak detector，A/D conversion，program-controlled amplification，compared shaping and phase-shifting network part.The counter measures the frequency，period and phase of sinusoidal signal.With the equal precision method,the multi-function counter achieves the precise frequency measurement of the sinusoidal signal which its frequency is from1Hz to10MHz，its amplitude is from0.01Vrms to5Vrms，as well as the accurate phase measurement of the sinusoidal signal which its frequency is from10Hz to100kHz，its amplitude is from0.5Vrms to5Vrms.The LCD monitor real-time displays the frequency，period and phase difference of current signal.The multi-function counter features high precision，friendly interface，and strong practical.
上傳時間： 2013-11-15
上傳用戶：gy592333
介紹一種多功能音樂播放器，它是以AT89S52單片機為核心，并輔有一些外圍器件，采用匯編語言編寫程序，實現多功能音樂播放，歌曲自動循環播放和使用琴鍵自編曲目功能。此外，彩燈顯示歌曲節奏，按鍵跳轉到喜愛曲目，液晶顯示當前播英文曲目。并給出了系統軟硬件設計。 Abstract: It introduces a multifunctional music player,taking AT89S52 single-chip microcomputer as hardware control core and using some peripheral elements.Programmes are compiled in assembly language to act as expected.There are two functional modes in this system.One is to make the music play automatically and consecutively,the other is to compose new songs through keys.In addition,lights show the pace of music and the English names can be displayed in the liquid crystal screen.With perfect combination of hardware and software,the music player can meet many music lovers’needs for multifunctional music player.And the hardware and software of the system are given.
上傳時間： 2013-11-18
上傳用戶：xiaodu1124
摘要：本文介紹應用PIC16C57單片機設計的一種可編程、高性能的數碼式樓宇對講系統，詳細闡明了有關工作原理和關鍵技術。本系統充分應用PIC單片機的軟硬件資源,具有可編程、電路簡單、功能強大等優點,在安居工程、樓宇技防系統等領域具有廣泛的應用前景。 關鍵詞：PIC 單片機 樓宇對講 編碼 譯碼 可編程
上傳時間： 2013-11-14
上傳用戶：hj_18
公司簡介 應廣科技成立于2005年2月18日資本額RMB3千萬臺灣優良IC設計公司主要核心技術:領先全球的平行處理多核心單片機。以軔體取代硬體設計的創新技術與思維。精簡的C語言編譯器。97個精簡指令開發容易，有效縮小程式空間提高工作效率。擁有全球數十項多核心單片機專利技術。經專業測試認證ESD達8千伏特以上。超高抗雜訊能力,超高抗干擾能力。
上傳時間： 2014-12-27
上傳用戶：togetsomething
摘要:討論了80C196MC單片機系統多微機互聯方案,該系統以單片機為主模塊,共享存儲器、共享I/O、總線接口及仲裁器構成。重點分析了多處理機及總線接口邏輯的實現。關鍵詞：單片機 公共總線 多機通訊
上傳時間： 2013-11-03
上傳用戶：璇珠官人
針對材料試驗機等設備中要求測量或控制材料拉伸或壓縮的位移，一般采用光電軸角編碼器檢測位置信號，輸出正交編碼脈沖信號。若采用其他方法檢測位置信號，必然導致電路設計復雜，可靠性降低。因此，提出一種基于LS7266R1的電子式萬能材料試驗機設計方案。給出了試驗機中的控制器工作原理，LS7266R1與單片機的接口硬件設計，以及主程序軟件流程圖。巧妙地把力量傳感器，位移傳感器等機械運動狀態的壓力或拉力以及位置坐標，變成了電壓信號和電脈沖數字信號，供A/D測量和LS7266R1計數，從而實現了獨立完成材料試驗控制或通過PC機串口命令完成材料試驗控制。 Abstract: Aiming at the requirement that the displacement of the tension and compression always be tested and controlled in the equipement such as material testing machine. The position signal was tested by photoelectric axial angle coder. Therefore， the paper proposes the design of electronic universal testing machine design based on LS7266R1. If the position signal detected by other methods， will inevitably lead to the circuit design complexity， reliability decreased. The work theory of the controller， the hardware interface design between LS7266R1 and single chip， and the flow chart of main program， are presented in this paper. The signal of the compression or tension power and displacement at working， which tested by power sensor and displacement sensor especially， is changed into electric voltage and electric pulse numerical signals. And these signals can be tested by A/D and counted by LS7266R1. Finally the test of the material properties can be controlled by itself， or controlled by the COM command of PC.
上傳時間： 2013-11-02
上傳用戶：yl1140vista
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
DP-51PROD單片機教學實驗儀是廣州致遠電子有限公司09年生產的一款單片機教學產品。是一套設計獨特、功能強大的單片機、CPLD、FPGA學習開發工具。DP-51PROD單片機教學實驗儀向用戶提供了豐富的外圍器件和接口，整個產品由多個功能模塊構成，各個功能模塊之間相互獨立，分布在11塊電路板上。不僅包含LED、數碼管、按鍵、蜂鳴器、直流電機、步進電機、AD、DA、LCD、實時時鐘等基本模塊幫助初學者入門，又包含溫度采集、濕度采集、紅外收發、CAN總線、收音機、語音模塊、非接觸式IC卡等復雜模塊，為用戶產品開發提供了平臺。是學校教學、個人學習、公司產品開發的好幫手。
上傳時間： 2013-11-04
上傳用戶：wpt
