介紹一種采用單片機技術(shù)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(tǒng)框架進行說明，然后介紹主要功能模塊的設(shè)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(shù)和功能原理，最后描述了該系統(tǒng)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
上傳時間： 2013-10-18
上傳用戶：windypsm
在開放式數(shù)控系統(tǒng)結(jié)構(gòu)模型的基礎(chǔ)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(fā)ISA設(shè)備WDM驅(qū)動程序的方法，探討了中斷處理、驅(qū)動程序與應(yīng)用程序之間的通信,簡要說明了驅(qū)動程序的安裝與調(diào)試。通過調(diào)試,系統(tǒng)設(shè)計運行穩(wěn)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
C8051F020單片機通過SPI接口驅(qū)動四線電阻式觸摸屏控制器TSC2046，利用中斷方式驅(qū)動TSC2046設(shè)計軟件。介紹了觸摸屏的工作原理、TSC2046工作方式以及典型應(yīng)用電路。 Abstract: The C8051F020 MCU is connected with the TSC2046 which is a 4-wire touch screen controller. The TSC2046 is controlled by interrupt mode, the? operation princIPle of touch screen is introduced. The operation mode of TSC2046 and typical application circuit are also discussed.
上傳時間： 2014-12-27
上傳用戶：hwl453472107
介紹一種無極可調(diào)交流電子負載設(shè)計的新方法，由ATmega48單片機輸出PWM波，通過上位機設(shè)定不同的占空比控制場效應(yīng)管的通斷時間，即改變流過場效應(yīng)管的平均電流。根據(jù)電流的大小，可以等效為相應(yīng)的負載，并將采集的電流值顯示在上位機上。文中對該系統(tǒng)的軟﹑硬件設(shè)計思路作了詳細的分析，闡述了其設(shè)計原理。 Abstract: A new type electronic load is introduced.Due to ATmega48 microcomputer output PWM wave.The different duty is set ratio through PC to control FET turn-on time.We can equivalent homologous load according the current and display the current at PC.The hardware and software designing are analysed in detail. The princIPle is explained and the output is also given.
上傳時間： 2013-11-23
上傳用戶：蟲蟲蟲蟲蟲蟲
提出了一種基于C8051F320的紅外模擬槍戰(zhàn)系統(tǒng)設(shè)計方案。介紹了紅外模擬槍戰(zhàn)系統(tǒng)的構(gòu)成，給出了硬件選型、系統(tǒng)硬軟件設(shè)計。利用紅外抗對系統(tǒng)的工作原理，系統(tǒng)獲得良好效果。 Abstract: This paper presents the design of simulated gunfight system based on C8051F320.Introduces system structure,and puts forward hardware selection of infrared simulated gunfight system and system hardware and software designs.Using the operation princIPle of infrared antagonizing system,the system result is good.
標簽： C8051F320 模擬 系統(tǒng)設(shè)計
上傳時間： 2013-11-20
上傳用戶：南國時代
針對51單片機系統(tǒng)中常用的A/D轉(zhuǎn)換器價格高、精度低的缺點，介紹TI公司的16 位的帶有I2C串行接口的A/D轉(zhuǎn)換器ADS1110的工作原理，給出ADS1110與AT89C51單片機系統(tǒng)的接口電路和軟件設(shè)計。實踐證明，ADS1110具有高性價比和實用性。 Abstract: According to the disadvantages of high expense and low accuracy of the general A/D converter used in MCS51 microchip system,the princIPle and working process of a high accuracy 16-bit A/D conversion ADS1110 which has I2C bus and belongs to TI Company are proposed here as well as the interface of ADS1110 to AT89C51 and software list.It is proved to be high performance index and practicability.
上傳時間： 2013-11-21
上傳用戶：gyq
詳細介紹了TLC1549系列模數(shù)轉(zhuǎn)換器的特點及工作原理，然后根據(jù)TLC1549的工作時序和A/D轉(zhuǎn)換原理針對實際問題編寫了詳細的匯編語言程序。 Abstract: A basic princIPle and characteristic of TLC1549 analog-to-digital converter are introduced? detailedly in this article.Through engineering-oriented illustration,a microcomputer programmer base on basic princIPle and time sequence of TLC1549 is writted.
上傳時間： 2014-07-16
上傳用戶：blans
介紹了電力操作電源與智能電池巡檢系統(tǒng)的特點，給出了一種基于超低功耗單片機MSP430 F149針對中小型變電站自動化運行的專用設(shè)備的基本設(shè)計原理及實現(xiàn)方法，最后給出了詳細硬件構(gòu)成和軟件實現(xiàn)。該系統(tǒng)能滿足中小型變電站安全、可靠、自動運行的要求，并通過與上位機的串行通信實現(xiàn)變電站的遠程管理和控制。 Abstract: The characters of the intelligent battery data logging system of the electric operation power are introduced.The basic design princIPle and the implemented methods of the special equipment which only designed for the middle or small transformer substation based on MSP430F149 are prescribed. Finally, the hardware block diagram and the software flow chart are also given. The function that the system finally needs to realize can basically meet with the middle or small transformer substation’s satisfy, reliably,and automatic running.And it can also realize the transformer substation long-distance management and control by serial communicating with the host computer.
上傳時間： 2013-11-25
上傳用戶：黃華強
在介紹基于MSP430單片機的指紋保險柜工作原理的基礎(chǔ)上，從系統(tǒng)軟件設(shè)計的角度出發(fā)，詳細介紹了指紋保險柜軟件的總體分析過程、程序結(jié)構(gòu)的設(shè)計以及代碼的編寫，給出了按鍵管理流程和部分源代碼。 Abstract: On basis of the operating princIPle of MSP430 microcontroller-based fingerprint safe,the general analyzing process,program designing and code compiling of the fingerprint safe software are introduced mainly,and the key-press flows chart and some codes according to the system software designing are put forward.
上傳時間： 2014-12-27
上傳用戶：gaojiao1999
在需要實時大量輸入漢字的顯示控制處理應(yīng)用中，利用傳統(tǒng)單片機實現(xiàn)顯示控制的設(shè)計方法是較難實現(xiàn)的。帶漢字字庫的液晶模塊的使用使得小容量ROM單片機的大量漢字信息輸入與顯示成為可能。提出了針對漢字字庫編碼的二級索引拼音輸入檢索方法,介紹了以ST7920作為控制器的帶漢字字庫的液晶顯示模塊的接口方法及漢字顯示和控制原理，給出了通用計算機鍵盤在單片機中的串行接口，采用該技術(shù)可大大增強單片機的漢字輸入功能。為小容量ROM單片機的大批量漢字信息處理提供了一種漢字輸入解決方案。 Abstract: It is difficult to realize Chinese characters input method based on the embedded system by using the traditional design method of display control. It is possible to input and display Chinese characters based on the embedded system with the ROM of small content by using the LCD module with Chinese characters.Chinese characters input method of the quadric index recall in allusion to Chinese characters code is brought forward.The interface and the princIPle of Chinese characters display control based on the LCD module controlled with the ST7920 is introduced too.The serial interface of the computer keyboard in common use and the embedded system is given at the same time. It can enhance the embedded system function of Chinese characters input by using this technology, and provide a kind of Chinese characters input scheme for the embedded system with small capacity ROM.
上傳時間： 2013-11-19
上傳用戶：jhksyghr
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