發(fā)布時間：2018-07-18 12:28

【摘要】：隨著高校人數(shù)的持續(xù)增加,為了給廣大同學提供更加智能化、人性化的教室信息查詢途徑,同時方便教師對學生出勤信息的查詢及高校對學生進行統(tǒng)一管理。為此,智能化的教室人員信息統(tǒng)計與發(fā)布系統(tǒng)應運而生,本文主要完成人員信息統(tǒng)計與發(fā)布系統(tǒng)中的人員信息采集與傳輸子系統(tǒng)設(shè)計。本設(shè)計采用2.4GHz有源RFID技術(shù)實現(xiàn)低成本、自動化的人員信息采集途徑,采用運行在STM32微控器上的嵌入式u IP協(xié)議,實現(xiàn)以校園網(wǎng)為傳輸環(huán)境的人員信息傳輸過程。人員信息采集與傳輸系統(tǒng)的設(shè)計分為標簽發(fā)射端、閱讀及數(shù)據(jù)處理端和數(shù)據(jù)傳輸端三個部分。論文主要工作包括:(1)對比常見的人員信息采集技術(shù)、傳輸協(xié)議,分析系統(tǒng)需求和設(shè)計總體框架,構(gòu)建基于標簽發(fā)射端、閱讀及數(shù)據(jù)處理端和數(shù)據(jù)傳輸端的系統(tǒng)設(shè)計方案。(2)標簽發(fā)射端,完成了標簽發(fā)射端的整體結(jié)構(gòu)設(shè)計,對多通道接收所需的發(fā)射地址進行了分類配置,完成了基于學號的數(shù)據(jù)包格式設(shè)計,結(jié)合nRF24LE1的發(fā)射流程重點設(shè)計出標簽發(fā)射端的低功耗方案,實現(xiàn)了人員信息的自動、超低功耗發(fā)射。(3)閱讀及數(shù)據(jù)處理端,實現(xiàn)了三個不同頻道的nRF24L01+接收設(shè)計,完成了射頻接收芯片nRF24L01+與微控器STM32的接口設(shè)計,接著完成了數(shù)據(jù)接收設(shè)計,確定了數(shù)據(jù)的30秒緩存及5秒發(fā)送方案,最后完成了數(shù)據(jù)包格式和用于設(shè)備自檢測的看門狗定時器設(shè)計。(4)數(shù)據(jù)傳輸端,完成了以ENC28J60為嵌入式以太網(wǎng)卡的設(shè)計和以u IP協(xié)議棧為嵌入式以太網(wǎng)協(xié)議的移植,設(shè)計出數(shù)據(jù)傳輸端做客戶端的嵌入式以太網(wǎng)數(shù)據(jù)傳輸方案,完成了數(shù)據(jù)傳輸端自動連接數(shù)據(jù)庫服務器的設(shè)計。對標簽發(fā)射端、閱讀及數(shù)據(jù)處理端和數(shù)據(jù)傳輸端進行了整體調(diào)試,實現(xiàn)了服務器對數(shù)據(jù)的成功接收。
[Abstract]:With the continuous increase of the number of students in colleges and universities, in order to provide more intelligent and humanized ways for students to inquire about classroom information, it is convenient for teachers to inquire about students' attendance information and to manage students uniformly in colleges and universities. Therefore, the intelligent classroom personnel information statistics and distribution system came into being. This paper mainly completes the design of the personnel information collection and transmission subsystem in the personnel information statistics and distribution system. In this design, 2.4GHz active RFID technology is used to realize low-cost and automatic human information collection, and the embedded u IP protocol running on STM32 microcontroller is adopted to realize the personnel information transmission process using campus network as the transmission environment. The design of personnel information acquisition and transmission system is divided into three parts: label transmitter, reading and data processing and data transmission. The main work of this paper is as follows: (1) comparing common human information collection technology, transmission protocol, analyzing the system requirements and designing the overall framework, building a tag-based transmitter, The system design scheme of reading and data processing terminal and data transmission terminal. (2) the whole structure design of tag transmitter is completed, and the transmission address needed by multi-channel receiving is classified and configured. The design of packet format based on school number is completed, and the low power scheme of tag transmitter is designed based on the transmission flow of nRF24LE1, which realizes the automatic and ultra-low power transmission of personnel information. (3) Reading and data processing, The nRF24L01 receiving design of three different channels is implemented. The interface design of the RF receiver nRF24L01 and the microcontroller STM32 is completed. Then, the data receiving design is completed, and the 30-second cache and 5-second transmission scheme of the data are determined. Finally, the design of data packet format and watchdog timer used for device self-detection is completed. (4) the data transmission end, the design of embedded Ethernet card based on ENC28J60 and the transplant of uIP protocol stack as embedded Ethernet protocol are completed. An embedded Ethernet data transmission scheme with data transfer terminal as client is designed, and the design of automatically connecting database server with data transmission terminal is completed. The tag transmitter, the reading and data processing terminal and the data transmission terminal are debugged as a whole to realize the successful receiving of the data by the server.
【學位授予單位】：河北大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP391.44;TP274.2

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