【正文】 物與有毒有害的有機(jī)物等限值的嚴(yán)格要求，使得膜技術(shù)在飲用水處理中的應(yīng)用越來越廣泛。voice chip iii 目 錄 摘 要 ........................................................................................................................ i ABSTRACT .............................................................................................................. ii 目 錄 ......................................................................................................................iii 1 緒論 ........................................................................................................................ 1 2 水質(zhì)監(jiān)測(cè)報(bào)警器總體設(shè)計(jì)方案 ............................................................................ 5 裝置原理及功能說明 ................................................................................. 5 系統(tǒng)構(gòu)成電路圖 ......................................................................................... 8 3 系統(tǒng)各部件功能說明 ............................................................................................ 9 信號(hào)采集 ..................................................................................................... 9 信號(hào)分析及輸出系統(tǒng) ............................................................................... 11 中心控制裝置 ........................................................................................... 14 主要性能 ......................................................................................... 15 引腳功能說明 ................................................................................. 17 振蕩器特征 ..................................................................................... 18 特殊功能寄存器 ............................................................................. 19 聲音控制模塊 ........................................................................................... 23 應(yīng)用方框圖 ..................................................................................... 25 管腳描述 ......................................................................................... 25 電氣參數(shù) ......................................................................................... 27 音頻輸出線路設(shè)計(jì) ......................................................................... 28 4 主要部件選型及參數(shù) ......................................................................................... 29 芯片 ........................................................................................................... 29 電阻 ........................................................................................................... 29 晶振的選擇 ............................................................................................... 29 三極管的選擇 ........................................................................................... 29 5 實(shí)物部件的組裝 .................................................................................................. 30 iv 結(jié)論 ......................................................................................................................... 33 致謝 ......................................................................................................................... 36 參考文獻(xiàn) ................................................................................................................. 36 附錄 ......................................................................................................................... 37 1 1 緒論 生活飲用水水質(zhì)與人們的身體健康和日常生活緊密相關(guān)。s life, membrane filtration technology is generally used for household drinking machine or plant, water purification technology has been paid more and more attention, and the production technology of largescale transformation of the existing water economically not feasible. On the background of this water filtration technology application and, in our drinking water machine mainly depends on the filter implementation, the process including the ultrafiltration membrane, consumption level of cation exchange resin, the hair of activated carbon, energy water, postpositional particle coconut shell activated carbon, ultrafiltration membrane, liquid activation device processes. But once the time is too long. The filter will lose its role, unable to plete the filtration process effectively, so the water quality will be worse, if people can not detect such deterioration will give people a healthy life problems. This water quality alarm system in foreign countries at relatively early development, now has bee a mature. But in China started relatively late, and the alarm system applied to the drinking machine is not widely used. This design including the use of conductivity sensor for the detection of water quality, data analysis of alarm control of the speech output consists of a single chip, so as to achieve the purpose of reminding people to deterioration of water quality, timely replacement of filter equipment, to ensure that people39。但是在國(guó)內(nèi)起步較晚，而這種應(yīng)用于飲水機(jī)的時(shí)時(shí)報(bào)警系統(tǒng)上未普遍應(yīng)用。 本人簽名： 日期： i 摘 要 在當(dāng)今生活中，膜過濾技術(shù)一般用于家用飲水機(jī)或者工廠， 水凈化工藝越來越受到人們的重視，而大規(guī)模改造現(xiàn)有水廠的生產(chǎn)工藝從經(jīng)濟(jì)上尚不可行。在論文答辯過程中，該生能在規(guī)定時(shí)間內(nèi)比較流利、清晰地闡述論文的主要內(nèi)容能恰當(dāng)回答與論文有關(guān)的問題。論文的寫作基本規(guī)范。它是實(shí)現(xiàn)自動(dòng)檢測(cè)和自動(dòng)控制的首要環(huán)節(jié) 。 3）系統(tǒng)構(gòu)成圖（見下頁） 圖 2 系統(tǒng)結(jié)構(gòu)示意圖（電源未標(biāo)示） 裝置功能、工作原理：實(shí)時(shí)檢測(cè)進(jìn)入飲水機(jī)水管的電極測(cè)量?jī)蓸O之間的離子濃度，將數(shù)值發(fā)送到比較器，和比較器內(nèi)正常數(shù)值做比較，離子濃度小于正常數(shù)值，則說明水質(zhì)合格，否則發(fā)送信號(hào)給反相器。概括的講：一塊 芯片 就成了一臺(tái)計(jì)算機(jī)。（原理圖詳見圖 2） 1）電化學(xué)原理 （ Electrochemistry）， 由于純水是不導(dǎo)電的，當(dāng)水質(zhì)不純水中含有電解質(zhì)（離子）時(shí)，水就可以導(dǎo)電，就可以測(cè)水中的電導(dǎo)率。但是在國(guó)內(nèi)起步較晚，而這種應(yīng)用于飲水機(jī)的時(shí)時(shí)報(bào)警系統(tǒng)上未普遍應(yīng)用。 在當(dāng)今生活中， 膜過濾技術(shù) 一般 用于家用飲水機(jī)或者工廠， 水凈化工藝越來越受到人們的重視，而大規(guī)模改造現(xiàn)有水廠的生產(chǎn)工藝從經(jīng)濟(jì)上尚不可行。眾所周知， 上一世紀(jì)中期 美國(guó)宇航局計(jì)劃投資 ，這費(fèi)用實(shí)在高的離譜。 6 技術(shù)總結(jié)完成論文。 2 探討、計(jì)算電導(dǎo)率與水質(zhì)變化的曲線關(guān)系。 2．以單片機(jī) 2051為核心，連接電壓比較器（檢測(cè)電導(dǎo)信號(hào)）、語音芯片、放大器、揚(yáng)聲器等外圍器件制成小盒裝置實(shí)物。遺憾的是人們可能忽視和錯(cuò)過更換和處理，喝二次污染水，實(shí)時(shí)監(jiān)測(cè)水質(zhì)非常必要。但是過期的膜、及積累毒素的過濾層反會(huì)對(duì)人產(chǎn)生危害，必須及時(shí)更換、處理。 二．內(nèi)容和要求 1．以電化學(xué)原理研制水質(zhì)電導(dǎo)率實(shí)時(shí)監(jiān)測(cè)傳感器 ，便于安裝在飲水機(jī)的管路上。 畢業(yè)設(shè)計(jì) (論文 )主要參考資料： [1] 童詩(shī)白、華成英 《模擬電子技術(shù)基礎(chǔ)》（第四版） 高等教育出版社 2020（ 0