畢業(yè)設計論文-校園廣播自動播放系統(tǒng)(已修改)
2025-06-19 02:16 本頁面
【正文】 閩江學院本科畢業(yè)論文(設計)題 目 校園廣播自動播放系統(tǒng) 學生姓名 學 號 120041005021 系 別 物理學與電子信息工程系 年 級 2004級 專 業(yè) 電子信息科學與技術 指導教師 職 稱 實驗師 完成日期 目錄摘要 ………………………………………………………………………………3引言 ………………………………………………………………………………41．方案論證與比較………………………………………………………………51．1總體方案比較………………………………………………………………5 1．2各模塊方案比較……………………………………………………………6 ………………………………………………………………6 驅動電路模塊………………………………………………………7 ………………………………………………………………7………………………………………………………………7…………………………………………………………………8 ……………………………………………………………8 ………………………………………………………………8 ……………………………………………………12 ……………………………………………………………153．測試結果與分析……………………………………………………………204．總結…………………………………………………………5．附錄…………………………………………………………參考文獻…………………………………………………………校園廣播自動播放系統(tǒng)摘要：以AT89S52單片機為主控制器和按鍵、顯示、實時時鐘及電機驅動等外圍電路構成了具有定時開/關功能的播放系統(tǒng)。主控制器的作用是對數(shù)據(jù)的存取和處理，還有及時響應外部的三個中斷：按鍵中斷， 即T1計數(shù)器溢出中斷；實時時鐘更新結束中斷；霍爾脈沖計數(shù)中斷。選取實時時鐘芯片DS14285與控制器來實現(xiàn)自動播放功能，從而實現(xiàn)無人職守。DS14285 是一款8 位并行方式的時鐘芯片,芯片采用地址/ 數(shù)據(jù)總線復用方式實現(xiàn)引腳的高效性，除了可向用戶提供報時和鬧鐘功能外,它還具有自動后備電源功能和114 字節(jié)的用戶RAM ,可以使時間和用戶信息在系統(tǒng)掉電時不丟失。Abstrat:A broadcast system with automatic on / off function was designed, which was posed of the main controller and peripheral circuits. A singlechip microputer AT89S52 was used as the main controller and the circuits consists of button, display, realtime clock and motor drives. The role of main controller is to access and to process the data. The main controller also responds timely to three outside interrupts, which are Key interruption, known as T1 counter overflow interruption, updated realtime clock interruption and Hall pulse counting interruption, respectively. To obtain the unattended function, a realtime clock chip of DS14285 and controller were used in the automatic playback capability. DS14285 is a 8bit parallel manner clock chip which performs high efficiency by using address/data multiplex mode. The chip have a function of givingthecorrecttime and using as alarm clock. It also has automatic backup battery and 114 bytes user RAM, which can make sure that the time and users’information in the system do not be lost when power fails.關鍵詞：校園廣播；自動播放；電控機蕊；單片機；AT89S52實時時鐘；定時控制；DS14285；
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