設計一種基于ATmega16L單片機的溫度控制系統，闡述該系統的軟硬件設計方案。采用模塊化設計方法，利用增量式PID算法使被控對象的溫度值趨于給定值。實驗結果表明該系統具有良好的檢測和控制功能。 Abstract: This paper designs a temperature control system based on ATmega16L，describes the hardware and software de－sign scheme of the system，adopts the modularized design method and utilizes the incremental PID algorithm to realize the temperature of controlled deviCE incline to the given value.The experiment result indicates that the system has good detec－tion and control function
上傳時間： 2013-10-09
上傳用戶：stvnash
針對目前汽車追尾事件頻發問題，提出一種防汽車車前和車后追尾的安全裝置設計。該設計以高性能、低功耗的8位AVR微處理器ATmega8L為核心，結合霍爾式車速傳感器、激光雷達測距裝置和MMA7260QT加速度傳感器，能夠兼顧車前和車后，摒棄以往設計中只考慮車前或車后單一性缺點，尤其適用于高速、夜晚或新手行車。 Abstract: Aiming at the high frequency of vehicle rear-end collision，a safe deviCE design of anti-vehicle rear-end collision is presented.In the design，the high-performance，low-power8-bit AVR microprocessor ATmega8L is utilized as a core combined with Hall-type speed sensor，laser-radar ranging deviCEs and the acceleration sensor MMA7260QT.The design considers both the front and back of a car，and overcomes the drawbacks of former designs in which only the front or the back of the car is considered，so it is especially suitable for high-speed，night or the beginner’s driving.
上傳時間： 2013-10-14
上傳用戶：GavinNeko
實時時鐘是微機保護裝置的重要部件，在討論PCF8583結構與功能的基礎上，提出采用dsPIC33F系列微處理器與串行I2C時鐘PCF8583的接口設計方案，給出了相應的接口電路與軟件流程。該設計方案結構簡單，可靠性高，開發周期短，具有一定的實用與參考價值。所設計的微機保護裝置已投入現場運行，效果良好。 Abstract: Real-time clock chip is an important part in microcomputer protection deviCE.Based on discussing the structure and function of PCF8583，a new interface scheme which uses dsPIC33F microprocessor and serial clock chip（I2C）PCF8583is proposed.The method of the circuit design and the main software flow are introduced in this paper.The scheme has simple structure，higher reliability and shorter exploitation cycle，so has definite practicality or reference value.The microcomputer protection deviCE has been put into operation with better effects.
上傳時間： 2013-11-18
上傳用戶：Thuan
介紹一種基于C8051單片機的動態心電監護系統。該系統由兩部分組成：以C8051F320單片機為核心的數據采集裝置和以PC機為平臺的分析處理系統。硬件電路功耗低，由單片機自帶的USB接口將數據傳送給PC機。軟件平臺采用LabVIEW可視化虛擬儀器系統開發平臺，將傳統儀器的功能模塊集成到計算機中，用戶可通過修改虛擬儀器的程序改變其功能。采用USB接口實時傳輸心電數據，并將數據采集模塊設計為計算機外設，使該系統高速快捷、小巧便攜。 Abstract: In this design，a low-cost ECG electrocardiogram monitoring system is introduced，which consists of two parts:data acquisition deviCE based on C8051F320and PC terminal as the analysis and processing system.The system is low-power consumption，the data is transmitted to the PC terminal by USB interface of the C8051F320.By using the visible virtual instrument system developing platform LabVIEW，the traditional instruments function modules are integrated into the computer，so the user can modify virtual instrument software to change its function to meet their needs.Using USB in-terface to realize real-time ECG data transmission，in addition，ECG data acquisition module is designed as the computer peripheral，which makes the syetem high-speed and portable.
上傳時間： 2013-11-13
上傳用戶：zhangzhenyu
介紹一種以Atmel公司的Attiny13為處理器的投影儀防盜器設計方案。該防盜器具有功耗低，功能完整，防盜效果良好等特點，除具有報警功能外，防盜器還具有以無線方式向主機發送報警信號的功能。采用315MHz發射模塊實現無線信號發送。該投影儀防盜器可適應眾多廠家生產的防盜器主機。 Abstract: This paper introduces the design scheme of overhead projector's anti-theft deviCE which users ATMEL company’s Attiny13as processor.This anti-theft deviCE features low powerloss，functional integrity，good effect of anti-theft.In addition to its own with alarm functions，the anti-theft deviCE also has alarm function which can send alarm signal to the host through wireless way.It sends wireless signal using315MHz transmitting module，so this overhead projector’s anti-theft deviCE is adapted to anti-theft deviCE host produced by many manufacturers.
上傳時間： 2013-11-02
上傳用戶：ysystc699
MG3500SoC是支持H.264高清編解碼器的片上系統，內部集成一個嵌入式ARM926處理器，支持高清H.264編解碼、MPEG鄄2解碼和JPEG編解碼。介紹了MG3500SoC的主要性能特點、引腳排列、主要接口功能及在DVR上的應用，以及MG3500SoC及其周圍器件的硬件設計，提出了在設計中應注意的問題。 Abstract: The MG3500System-on-Chip（SoC）is high definition（HD）H.264codec,including ARM926-EJ processor，H.264encoder/decoder，MPEG2decoder and JPEG/MJPEG encoder/decoder.The features,pin assignments，interfaces and the typical application of MG3500in DVR are introduced in this paper.The application hardware circuit between the MG3500SoC and peripheral deviCE are given,the questions which the syetem design needs to pay attention are explained.
上傳時間： 2013-11-12
上傳用戶：elinuxzj
數字信號處理器dsPIC33F集多通道高精度A/D轉換、多通訊模式、看門狗、CMOS Flash技術等于一體，其內部可完成所有數據操作，實現總線不出芯片技術。將該處理器應用于微機保護裝置，提出基于dsPIC33F微處理器的微機保護裝置的設計方案，給出相應的接口電路與軟件流程。該設計方案結構簡單，性價比及可靠性高，開發周期短，具有一定的實用推廣價值。所研制的微機保護裝置現場運行效果良好。 Abstract: The dsPIC33F microprocessor has a plentiful interior resource which contains multi-channel，high precision A/D converters，multi-communication module，watchdog，CMOS Flash technology，and so on.All data manipulations is accomplished interiorly.What is more，it makes the technology that bus does not go beyond the chip comes into practice.The paper put forwards a design scheme based on dsPIC33F microprocessor.The scheme has the advantages of simple structure，high reliability and shortened exploitation cycle.What is more，it has definite practicality and reference.The microcomputer protection deviCE has been put into operation with excellent effects.
上傳時間： 2013-11-16
上傳用戶：開懷常笑
在開放式數控系統結構模型的基礎上，研究了基于ISA總線的DSP通信控制原理。采用中斷方式完成了PC機和DSP之間的通信。介紹了以DriverWorks為工具開發ISA設備WDM驅動程序的方法，探討了中斷處理、驅動程序與應用程序之間的通信,簡要說明了驅動程序的安裝與調試。通過調試,系統設計運行穩定。 Abstract: The ISA bus and DSP correspondence control principle is investigated in the basis of the existing open architecture numerical control system.The interrupt method is used to realize the communication between PC and DSP based on the ISA bus.The methods of WDM driver exploitation for ISA deviCE using Driver Works are introduced.The main process of driver program and the keys such as handle interrupt and the communication between the drivers and application are presented.And how to debug and install the drive is explained.
上傳時間： 2013-11-04
上傳用戶：kang1923
針對眾多低成本數據采集需求，采用帶有片上USB控制器和D/A轉換器的混合信號微處理器C8051F340，設計了一款可通過USB接口和LabVIEW圖形用戶界面實現與PC機聯機的數據采集器，同時借助系統的SD卡存儲獨立實現現場長時間采集數據。該數據采集器成本低，結構簡單，體積小，已成功用于工業現場。 Abstract: Aiming at the need of low cost data acquisition, a data acquisition deviCE is designed based on C8051F340 which is a mixed-signal microcontroller and integrates USB controller and A/D controller on a chip.The data acquisition deviCE which can combine with PC by USB interface and LabVIEW graphical user interface,can realize data acquisition. At the same time,it can be solely run a long time in virtue of SD card in field.The date aequisition deviCE features low cost,simple structure and little sharp, and it has been used in industry field.
上傳時間： 2014-05-31
上傳用戶：1109003457
The PCF8578 is a low power CMOS1 LCD row and column driver, designed to drive dotmatrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The deviCE has40 outputs, of which 24 are programmable and configurable for the following ratios ofrows/columns: 32¤8, 24¤16, 16¤24 or 8¤32. The PCF8578 can function as a stand-alone LCDcontroller and driver for use in small systems. For larger systems it can be used inconjunction with up to 32 PCF8579s for which it has been optimized. Together these twodeviCEs form a general purpose LCD dot matrix driver chip set, capable of driving displaysof up to 40960 dots. The PCF8578 is compatible with most microcontrollers andcommunicates via a two-line bidirectional bus (I2C-bus). Communication overhead isminimized by a display RAM with auto-incremented addressing and display bankswitching.
上傳時間： 2013-10-23
上傳用戶：頂得柱
