【正文】 secondary school recruitment of students scale increasing, increasingly heavy burden on school management of the personal safety of students, parents of children in school time to know the situation more and more demand. Traditional students attendance for artificial or M to brush card attendance, this makes the job bee very plicated and inefficient. How to improve the students39。 On the other hand, schools can through the school of student attendance management system to statistics. System mainly consists of frontend hardware, home school munication server and related software management platform. School for students, faculty and staff efficiency, intuitive attendance。s students attendance management technology the development direction of automation, intelligent, informatization, improve the management level of the management, management efficiency, improve the degree of parents of children in and out of the school information control, strengthen the school and parents for students to master degree in and out of the school information and to be able to timely feedback to special circumstances, so as to effectively achieve the construction of safe campus this purpose. KEY WORDS： Home school munication； RFID technology； Intelligent attendance； SMS platform 目錄 第一章 緒論 .................................................................................................................... 1 背景分析 ................................................................................................................... 1 發(fā)展現(xiàn)狀及趨勢(shì) ......................................................................................................... 2 論文的意義 ................................................................................................................ 3 本文的主要工作 ......................................................................................................... 4 第二章 RFID 技術(shù) ............................................................................................................ 5 RFID 技術(shù)介紹 ............................................................................................................ 5 RFID 的工作原理及系統(tǒng)組成 ....................................................................................... 6 電磁場(chǎng)基本理論 .................................................................................................... 6 工作原理 .............................................................................................................. 7 RFID 組成系統(tǒng) ...................................................................................................... 8 RFID 系統(tǒng)的特點(diǎn) ........................................................................................................ 9 射頻技術(shù)的特點(diǎn) ................................................................................................... 9 射頻技術(shù)在物流管理中的適用性 .......................................................................... 9 RFID 系統(tǒng)的分類 ...................................................................................................... 10 系統(tǒng)中采用 RFID技術(shù)介紹 .......................................................................... 11 的優(yōu)勢(shì) .................................................................................................... 12 RFID防碰撞技術(shù) ................................................................................................ 12 本章總結(jié) ................................................................................................................. 16 第三章 基于 RFID家校通智能考勤系統(tǒng)組成 .................................................................. 17 系統(tǒng)概述 ................................................................................................................. 17 工作原理 ................................................................................................................. 17 主要硬件設(shè)備及相關(guān)技術(shù)說明 .................................................................................. 19 家校通電子學(xué)生證 ............................................................................................. 19 家校通讀寫器 .................................................................................................... 23 家校通智能終端 ................................................................................................. 25 出入校判定算法 ....................................................................................................... 27 算法導(dǎo)出環(huán)境 .................................................................................................... 27 判定算法 ........................................................................................................... 28 算法中相關(guān)待解決的問題 ................................................................................... 28 數(shù)據(jù)傳輸技術(shù) .......................................................................................................... 29 GPRS 無線傳輸技術(shù) ............................................................................................ 29 CDMA無線傳輸技術(shù) .......................................................................................... 32 數(shù)據(jù)通路與協(xié)議 ....................................................................................................... 36 系統(tǒng)數(shù)據(jù)通路 .................................................................................................... 36 家校通平臺(tái)協(xié)議描述 .......................................................................................... 37 卡的低功耗技術(shù) ................................................................................................ 38 超低功耗技術(shù)簡(jiǎn)介 .................................................................................. 38 超低功耗技術(shù)原理及應(yīng)用 ........................................................................ 39 本章小結(jié) ................................................................................................................. 40 第四章 系統(tǒng)