介紹一種簡單射頻識別系統設計。該設計包括閱讀器、應答器和線圈3部分。由單片機控制閱讀器向應答器發射無線信號，并接收應答器回送的信號，再通過分析回送信號識別物品。閱讀器和應答器之間以半雙工通信方式通信。 Abstract: A simple design of radio frequency identification system is given in this paper.The design includes reader,responder and winding.Through MCU，signals are sent to responder from reader，then corresponding signals are sent back. According to the analysis of the signals sent back，the objects can be identified.Half-duplex communication is adopted? between? reader? and? responder.
上傳時間： 2013-10-11
上傳用戶：plsee
RFID（Radio Frequency identification）技術是利用射頻通信實現的一種非接觸式自動識別技術。擁有廣闊的發展前景和巨大的市場潛力。本文介紹了RFID技術的原理、特點，深入分析了信號傳輸時所采取的反方向散射的調制方式，影響傳輸距離的因素，最后介紹了在遠程RFID自動識別系統中的讀寫沖突和防沖突算法，更好的解決了遠程RFID系統存在的沖突問題。
上傳時間： 2013-10-11
上傳用戶：fdfadfs
提出了一種基于PIC16F877A微控制器和CC2500射頻收發器芯片的低功耗、低成本RFID（Radio Frequency identification， 無線射頻識別）局域定位系統設計方法，介紹了系統的定位工作原理、主要硬件電路模塊及定位算法的設計和實現。采用基于序列號對時隙數運算的排序算法有效解決了多標簽識別碰撞的問題，基于射頻輻射強度（Received Signal Strength Indication， RSSI）和圓周定位算法實現了基于RFID多標簽系統的平面定位。實驗測試表明，這種射頻定位方法能夠實現一定精度下的無線局域定位的功能。
上傳時間： 2013-11-06
上傳用戶：weareno2
The information in this specification is subject to change without notice.Use of this specification for product design requires an executed license agreement from the CompactFlashAssociation.The CompactFlash Association shall not be liable for technical or editorial errors or omissions contained herein; norfor incidental or consequential damages resulting from the furnishing, performance, or use of this material.All parts of the CompactFlash Specification are protected by copyright law and all rights are reserved. Thisdocumentation may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to anyelectronic medium or machine readable form without prior consent, in writing, from the CompactFlash Association.The CFA logo is a trademark of the CompactFlash Association.Product names mentioned herein are for identification purposes only and may be trademarks and/or registeredtrademarks of their respective companies.© 1998-99, CompactFlash Association. All rights reserved.
標簽： 技術資料
上傳時間： 2013-10-08
上傳用戶：stewart·
4. If a modified source code is distributed, the original unmodified -- source code must also be included (or a link to the Free IP web -- site). In the modified source code there must be clear -- identification of the modified version.
標簽： source code distributed unmodified
上傳時間： 2013-12-14
上傳用戶：qq1604324866
This module can be used to interface to the MMC card in MMC or * SPI modes. It supports a multiple card environment. The reset and * identification processes assume multiple cards on the bus. * In MMC mode, the card number is used as the RCA operand in the * commands.
標簽： MMC interface multiple supports
上傳時間： 2014-01-07
上傳用戶：qilin
matlab編寫的一個涂膠機的仿真程序，可用于仿真和控制方法的驗證，具體可參見文獻"identification and cross-directional control of coating processes"
上傳時間： 2015-08-16
上傳用戶：sammi
本書以4個面向來表現C++的本質：procedural（程序性的）、generic（泛型的）、object-based（個別對象的）、object-oriented（面向對象的）。本書的組織圍繞著一系列逐漸繁復的程序問題，以及用以解決這些問題的語言特性。循此方式，你不只學到C++的函數和結構，也會學習到它們的設計目的和基本原理。 你可以由本書發現以下關鍵主題： ● Generic （泛型）編程風格和Standard Template Library(STL) ● Object-based(個別對象)編程風格和class的設計 ● Object-oriented(面向對象)編程風格和classes階層體系的設計 ● Function template 和class template 的設計和運用 ● Exception handling(異常處理)與執行期型別鑒定（Run-Time Type identification）
標簽： object-oriented object-based procedural generic
上傳時間： 2013-12-30
上傳用戶：362279997
This article describes Atmel’s FingerChip technology for electronic fingerprint sensing that combines the advantages of small size, low cost, high accuracy, zero maintenance, low energy consumption and portability. This technology has applications in a wide range of fixed and portable secured devices including access control systems, cash terminals, public transport, PCs, PDAs, Smart Card readers and motor vehicles. It can be used in almost any situation where rapid, reliable and accurate identification or authentication of an individual is required.
標簽： fingerprint FingerChip technology electronic
上傳時間： 2013-12-27
上傳用戶：h886166
In the field of biometrics, palmprint is a novel but promising technology. Limited work has been reported on palmprint identification and verification, despite the importance of palmprint features. There are many unique features in a palmprint image that can be used for personal identification. Principal lines, wrinkles, ridges, minutiae points, singular points, and texture are regarded as useful features for palmprint representation.
標簽： biometrics technology palmprint promising
上傳時間： 2016-04-02
上傳用戶：duoshen1989
