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畢業(yè)論文-基于51單片機(jī)以及isd4004模擬的公交車(chē)語(yǔ)音報(bào)站系統(tǒng)暨公共汽車(chē)語(yǔ)音報(bào)站器設(shè)計(jì)-免費(fèi)閱讀

  

【正文】 突然想到那件藍(lán)格子襯衫;那些被折成各種各樣形狀的信紙;那段從街角深巷伊始的友誼;還有那場(chǎng)還沒(méi)有開(kāi)始就宣告了終結(jié)的邂逅計(jì)劃 …… 那些年那些天的非做不可,終于和青春一樣,都將在我們的人生中謝幕。也曾經(jīng)好像已經(jīng)下定了決心去做某件事,但更多的時(shí)候是最后又打起了退堂鼓。t really grow up, it seems is not so important。s actions. CSKA said they were surprised and disappointed by Toure39。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。也因?yàn)檫@樣,我明白了真理總是在不斷的揣摩中產(chǎn)生的,這是我的最深體會(huì)。延時(shí) 3ms 子程序 MOV R7 , 15 Y3MS1: MOV R6 , 48 Y3MS2: DJNZ R6 , Y3MS2 NOP DJNZ R7 , Y3MS1 MOV R6 , 07 Y3MS3: DJNZ R6 , Y3MS3 RET SHUMA: 。等待按鍵的釋放。 MOV A , 00H AJMP LKP LONE: JB , LTWO 。 JNZ LK2 ACALL DISPLAY 。顯示十位緩沖區(qū) DIS_GE EQU 51H 。 硬件電路圖見(jiàn)附錄 。 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) 矩陣式按鍵的工作原理 鍵盤(pán)分兩大類(lèi):編碼鍵盤(pán)和非編碼鍵盤(pán) ,獨(dú)立式按鍵屬于 非編碼鍵盤(pán) , 只簡(jiǎn)單地提供鍵盤(pán)的行列與矩陣,其他操作如鍵的識(shí)別,決定按鍵的讀數(shù)等僅靠軟件完成,故硬件較為簡(jiǎn)單,但占用 CPU 較多時(shí)間。這樣雖然在某一時(shí)段只有一位數(shù)碼管被點(diǎn)亮,但是由于人眼的視覺(jué)暫留 效應(yīng),實(shí)際效果與靜態(tài)顯示完全一樣。本端接 VCCA則禁止自動(dòng)靜噪。芯片內(nèi)部的采樣時(shí)鐘在出廠前已調(diào)校 ,誤差在 +1%內(nèi)。中斷狀態(tài)在下一個(gè) SPI 周期開(kāi)始時(shí)清除。 片選 (SS) 此端為低 ,即向該 ISD4004 芯片發(fā)送指令,兩條指令之間為高電平。采樣頻率可為 ,頻率越低 ,錄放時(shí)間越長(zhǎng) ,而音質(zhì)則有所下降 ,片內(nèi)信息存于閃爍存貯器中 ,可在斷電情況下保存 100 年 (典型值 ),反復(fù)錄音 10 萬(wàn)次。具有聲音清晰自然,節(jié)約內(nèi)存,體積小、成本低,可靠性高,安裝、調(diào)試使用都很方便的特點(diǎn)。但有時(shí)由于受到各種因素如雨雪天路滑、車(chē)上擁擠、乘務(wù)員心情的變化等的影響 ,會(huì)出現(xiàn)報(bào)錯(cuò)站 ,漏報(bào)站的情況 ,給乘客特別是不熟悉本市地形的乘客帶來(lái)了不必要的麻煩 ,從而影響到了一個(gè)城市的窗口形 象工程建設(shè)。 關(guān)鍵字: 單片機(jī),語(yǔ)音提示,文字顯示,公交報(bào)站 ( 500 字以?xún)?nèi)) 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) ABSTRACT The design mainly solve the problem of how to easily and accurately indicate that passengers arriving. It has the function of analog voice reporting and forecasting station on the text display ,reporting number and station name ,and voice information recording and station name selection control. The system includes microcontroller module, voice recording and playback circuitry, station number, station name display modules, interface circuit of the keyboard, reset circuit and power supply. The system uses 51 Singlechip Microputer to control speech synthesis chip and liquid crystal display module. Speech synthesis chip ISD4004 adopts the patented technology for semiconductor memory directly simulated data storage of analog voice, that analog voice data is written directly to the individual storage units, not through A/D and D/A conversion, so we can receive the natural emergence of better voice effects and avoid the quantization of noise and distortion caused by the quantization and pression in the generally solid voice circuit. Besides, LCD makes the reporting system more practical. KEY WORDS: Singlechip Microputer, Audio Prompt, Character Display, BusStop AutoAnnounce 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) 目 錄 中文摘要 ............................................................................................................. 1 ABSTRACT......................................................................................................... 2 目 錄 ................................................................................................................... 3 第一章 緒論 ....................................................................................................... 4 1. 1 引言 ........................................................................................................... 4 設(shè)計(jì)方案論證 ....................................................................................... 5 設(shè)計(jì)方案選擇 ………………………………………………… ...5 總體設(shè)計(jì)方案框圖及分析 …………………………………… ...5 第二章 硬件電路設(shè)計(jì) ....................................................................................... 7 單元電路設(shè)計(jì)與原理分析 .................................................................... 7 ISD4004 的工作原理 .......................................................................... 7 LED 數(shù)碼顯示原理 …………………………………………….. 9 矩陣式按鍵的工作原理 ……………………………………… .11 整機(jī)調(diào)試 …………………………………………… ………… .11 第三章 程序設(shè)計(jì) ............................................................................................. 12 程序流程圖 .......................................................................................... 12 源程序清單 .......................................................................................... 13 參考文獻(xiàn) ........................................................................................................... 17 附錄 A.....................................................
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