摘　要
隨著社會(huì)經(jīng)濟(jì)的飛速發(fā)展，城市建設(shè)規(guī)模的不斷擴(kuò)大，人口的增多以及人們生活水平的不斷提高，對(duì)日常生活的質(zhì)量也有了越來(lái)越高的要求，創(chuàng)建和諧校園，構(gòu)建和諧社會(huì)已經(jīng)成為時(shí)代的發(fā)展趨勢(shì)。為此我們?cè)O(shè)計(jì)一種更加方便使用的打鈴器，通過(guò)計(jì)算機(jī)控制PLC，進(jìn)而控制燈、電鈴、廣播等，實(shí)現(xiàn)科學(xué)的自動(dòng)化。
本文介紹一種用PLC控制的作息時(shí)間控制系統(tǒng)，詳細(xì)地闡述了系統(tǒng)組成、系統(tǒng)硬件接線和系統(tǒng)軟件設(shè)計(jì)，并詳細(xì)介紹了系統(tǒng)工作原理。該系統(tǒng)具有外設(shè)電路，配置簡(jiǎn)單、擴(kuò)展方便、操作容易、可靠性高、實(shí)用性強(qiáng)等特點(diǎn)，集電鈴、路燈、宿舍燈、教室燈、音樂(lè)廣播自動(dòng)控制于一體，并具有周末與假期控制功能，實(shí)現(xiàn)了作息時(shí)間無(wú)人控制的自動(dòng)化、科學(xué)化管理與操作。
利用PLC作的作息時(shí)間控制器采用數(shù)碼顯示準(zhǔn)確顯示星期、時(shí)、分，按照學(xué)校的作息時(shí)間自動(dòng)打鈴、放關(guān)廣播、放關(guān)音樂(lè)、開熄學(xué)生宿舍燈，同時(shí),該P(yáng)LC作息時(shí)間控制器還設(shè)置了手動(dòng)按鈕，用于星期、時(shí)、分手動(dòng)調(diào)整。操作起來(lái)也是既方便又簡(jiǎn)單。

關(guān)鍵詞：作息時(shí)間控制　PLC　I/O接線　軟件設(shè)計(jì)

 
Abstract
With the rapid economic development of society, the urban construction and expansion of the size of the population increase and the continuous improvement of people’s living standard, the daily life of quality also had more and more high demand, establishing harmonious campus, and construct a harmonious society has become the development rend of The Times. To this end, we design a more use-friendly bell device through the computer control PLC, and thus control the lights, bells, broadcasting, science automation.
This paper introduces a control schedules with PLC control system, detailed description to the system composition, system hardware and software design wiring system, and introduces the working principle of the system. The system has a peripheral circuit, configuration, simple expansion easier, easy operation, high reliability and practicability and other characteristics, set bell, street light, the light, the classroom lamp, music broadcasting to be automatic control at an organic whole, and on weekends and holidays with control functions, realize the calendar control of automation, no scientific management and operation .
 Use of PLC for schedules controller by the digital display show week, and minutes, according to the school calendar ringing the bell, put off automatically broadcast, put off music, open out the students’ dormitory, and at the same time, the PLC controller also set the timetable manual button for weeks, when moving, breaking up adjustment.

Key words: Work and Rest Time Control　PLC　I/O Connection　Software Design
   
 
目　錄
第1章　緒論 1
1.1　目的和意義 1
1.2　研究現(xiàn)狀 1
1.2.1　國(guó)內(nèi)研究狀況 1
1.2.2　國(guó)外研究狀況 2
1.3　研究?jī)?nèi)容 2
第2章　相關(guān)技術(shù)介紹 4
2.1　可編程邏輯控制器技術(shù)介紹 4
2.1.1　PLC的結(jié)構(gòu) 4
2.1.2　工作原理 5
2.2　PLC控制技術(shù)與其他控制技術(shù)的區(qū)別 6
2.2.1　PLC與幾點(diǎn)接觸控制系統(tǒng)的比較 6
2.2.2　PLC與微型計(jì)算機(jī)的比較 6
2.2.3　PLC與集散系統(tǒng)(DCS)的比較 7
2.3　繼電器相關(guān)技術(shù)介紹 7
第3章　硬件設(shè)計(jì) 9
3.1　工作原理 9
3.2　硬件選型 10
3.2.1　PLC選型 10
3.2.2　指示燈 10
3.2.3　數(shù)碼管 11
3.2.4　按鈕 11
3.2.4　繼電器 11
3.2.5　熔斷器 11
3.3 系統(tǒng)接線圖 12
第4章　軟件設(shè)計(jì) 13
4.1　系統(tǒng)流程圖 13
4.2 輸入輸出分配 14
4.3　控制系統(tǒng)的程序設(shè)計(jì) 15
4.3.1　數(shù)字顯示原理 15
4.3.2　秒脈沖程序的設(shè)計(jì) 17
4.3.3　分顯示程序的設(shè)計(jì) 17
4.3.4　時(shí)顯示程序的設(shè)計(jì) 18
4.3.5　星期顯示程序的設(shè)計(jì) 19
4.3.6　廣播控制的設(shè)計(jì) 20
4.3.7　燈的控制的設(shè)計(jì) 21
4.3.8　雙休日控制的設(shè)計(jì) 22
4.3.9　電鈴控制的設(shè)計(jì) 22
4.4　校園作息時(shí)間控制系統(tǒng)指令表 23
第5章　結(jié)論與展望 36
5.1　結(jié)論 36
5.2　展望 36
參考文獻(xiàn) 37
致　謝 38
附　錄 39
附錄A　外文資料 39
附錄B　系統(tǒng)梯形圖 49