【正文】
學(xué)院通信工程系 37 / 45摘要知識要學(xué)以致用,才能發(fā)揮它的最大作用。保密的論文(設(shè)計)在解密后適用本規(guī)定。有權(quán)將論文(設(shè)計)用于非贏利目的的少量復(fù)制并允許論文(設(shè)計)進入學(xué)校圖書館被查閱。對本論文(設(shè)計)的研究做出重要貢獻的個人和集體,均已在文中作了明確說明并表示謝意。2013年度本科生畢業(yè)論文(設(shè)計)三段聲控電平顯示器的設(shè)計院 - 系: 工學(xué)院自動化系 專 業(yè): 電氣工程及其自動化 年 級: 學(xué)生姓名: 學(xué) 號: 導(dǎo)師及職稱: 2013年5月2013Annual Graduation Thesis (Project) of the College UndergraduateDesign three sound level displayDepartment: College of engineeringMajor: Electrical engineering and automationGrade: Student’s Name:Student No.: Tutor: May, 2013畢業(yè)論文(設(shè)計)原創(chuàng)性聲明本人所呈交的畢業(yè)論文(設(shè)計)是我在導(dǎo)師的指導(dǎo)下進行的研究工作及取得的研究成果。據(jù)我所知,除文中已經(jīng)注明引用的內(nèi)容外,本論文(設(shè)計)不包含其他個人已經(jīng)發(fā)表或撰寫過的研究成果。 作者簽名: 日期: 畢業(yè)論文(設(shè)計)授權(quán)使用說明本論文(設(shè)計)作者完全了解紅河學(xué)院有關(guān)保留、使用畢業(yè)論文(設(shè)計)的規(guī)定,學(xué)校有權(quán)保留論文(設(shè)計)并向相關(guān)部門送交論文(設(shè)計)的電子版和紙質(zhì)版。學(xué)??梢怨颊撐模ㄔO(shè)計)的全部或部分內(nèi)容。 我們在課堂所學(xué)的是書本的知識,是理論上的東西,我們只有真正用到實際中去才能發(fā)揮它最大的作用,這就需要我們親自動手去操作,理論結(jié)合實際,這對于現(xiàn)在的大學(xué)生顯得更加重要。由音頻電路中的傳感器把聲音信號轉(zhuǎn)換成電信號,然后通過分頻電路把電信號分成不同的頻段,低頻為紅色,頻率為50400HZ,中頻綠色,頻率為50800HZ,高頻為藍色,頻率為1000HZ,然后根據(jù)各段頻率的大小由不同的驅(qū)動電路驅(qū)動相應(yīng)的LED燈閃爍。本文先對三段聲控電平顯示器器中用到的原件的特性和基本情況做了一些相關(guān)介紹,然有逐一介紹了顯示器中的不同電路,最后簡單的介紹了一些安裝調(diào)試的過程以及一些應(yīng)當(dāng)注意的一些事項。關(guān)鍵詞:電平顯示器 頻率 聲控 安裝調(diào)試ABSTRACTKnowledge to apply what they have learned to play the biggest role. We have learned in the classroom is a book of knowledge, theoretical things, we only really used the actual order to play its role, which we need to hands to operate, integrate theory with practice, which for now college students bee more important. The facile introduction of three sections voice level display, the three sections of the voice level monitor circuit includes a power supply circuit, the audio circuit, the frequency divider circuit and a driving circuit constituting. Sound signal is converted into an electrical signal by the audio circuit in the sensor, and then passed through the frequency divider circuit, the electrical signal into different frequency bands, a low frequency of the red, 50400Hz frequency, IF green, a frequency of 50800Hz, highfrequency blue color, frequency to 1000 Hz, and then depending on the size of the frequency by a different driver circuit to drive the corresponding LED flashes. The other three circuit power supply, the power supply voltage input from the power circuit, respectively, for the installation of a threeterminal regulator L7806 for the entire circuit to provide a stable voltage 6V 9V15V, power supply circuit, while a diode IN4007 prevents installation of the power pole sexually but damage the threeterminal regulator. The first three paragraphs voice level monitor used in the original features and basic introduction, and then go through the different circuits in the display, the last simple installation and missioning of the process, as well as some should Note that some of the issues. Finally, under the careful guidance of the instructor, pleted the three paragraphs voice level monitor welding and missioning and successful operation.Key words: Level display Frequency Voice Installation and missioning目錄目錄 3第1章 緒論 11 論文選題目的及意義 12理論淵源及演化 1第2章 主要元件介紹 31 電阻 31 電阻阻值的判斷 32 半導(dǎo)體二極管 51 二極管辨別及參數(shù) 52 半導(dǎo)體二極管的選用 53 二極管的伏安特性曲線 63 電容 71 電容的分類 72 電容的選用方法 73 電容的特性參數(shù) 84 電容元件的符號和特性曲線 94 三極管 91 晶體三極管的伏安特性曲線 102 三極管工作原理 123 三極管引腳的判