rtu設(shè)計-基于51單片機的遠程溫度采集與顯示系統(tǒng)設(shè)計(已修改)
2024-11-12 14:44 本頁面
【正文】 （論文） 摘 要 隨著數(shù)字技術(shù)的發(fā)展和計算機日益廣泛的應(yīng)用，單片機技術(shù)在各個領(lǐng)域得到了充分的應(yīng)用。本設(shè)計以 AT89C51單片機為設(shè)計開發(fā)平臺，結(jié)合 DS18B20溫度傳感器、 LCD液晶顯示、 LED數(shù)碼管、 RS485遠程通信、按鍵和報警幾部分電路，構(gòu)成 了遠程溫度采集與顯示系統(tǒng)。遠程通信采用 RS485串行通訊的標(biāo)準(zhǔn)，通過DS18B20進行現(xiàn)場總線的溫度采集，然后將溫度數(shù)據(jù)送入單片機進行數(shù)據(jù)處理，具有巡檢速度快，擴展性好，成本低的特點。 本設(shè)計中的溫度采集系統(tǒng)充分發(fā)揮了 AT89C51單片機的特點，結(jié)合現(xiàn)有技術(shù)，大大降低了電路的設(shè)計復(fù)雜度，該系統(tǒng)具有溫控準(zhǔn)確、操控界面良好、穩(wěn)定性高、抗干擾能力強等優(yōu)點。使用 RS485總線，一對雙絞線就能實現(xiàn)多站聯(lián)網(wǎng)，構(gòu)成分布式系統(tǒng)，設(shè)備簡單、價格低廉、能進行長距離通信的優(yōu)點使其得到了廣泛的應(yīng)用。本系統(tǒng)能夠同時檢測 4路溫度 ，檢測溫度的范圍為 55℃ ~+125℃ 。本設(shè)計采用 AT89C51 八位單片機實現(xiàn)，單片機軟件編程的自由度大，可通過編程實現(xiàn)各種各樣的算術(shù)算法和邏輯控制，而且體積小，硬件實現(xiàn)較簡單，安裝方便。 基于單片機的溫度采集系統(tǒng)廣泛應(yīng)用于采用計算機、自動測試、微電子和自動控制等多項技術(shù)，不僅具有信號采集方便、簡單和靈活性大等優(yōu)點，而且可以大幅度提高被測溫度的技術(shù)指標(biāo)。 關(guān)鍵詞： RS485總線；單片機；溫度測量系統(tǒng) － I－ 蘭州交通大學(xué)畢業(yè)設(shè)計（論文） Abstract With the development of digital technology and the increasingly widespread application of puter, microcontroller technology in various fields have been fully applied. The design use AT89C51 microcontroller as development platform,bined with DS18B20 temperature sensor, LCD liquid crystal display, LED digital tube, RS485 remote munications, alarm buttons, and several parts of the circuit, constitutes a remote temperature measurement and display system. Remote Communication with RS485 serial munication standard, through the field bus DS18B20 temperature acquisition,then the temperature data into the microcontroller for data processing, with the inspection speed, scalability and low cost characteristics. The design of the temperature acquisition system fully plays the characteristics of the AT89C51 microcontroller, bined with existing technology, greatly reduces the circuit plexity, the system has accurate temperature control, good control interface, high stability, strong antiinterference advantages . Using the RS485 bus, a pair of twisted pair can achieve multistation work, the distributed system, simple equipment, low cost, can municate over long distances to get the advantages of a wide range of applications. The 4way system can detect temperature, test temperature range is 55 ℃ ~ +125 ℃ . This design uses eight AT89C51 MCU, MCU software programming large degree of freedom can be achieved by programming a variety of arithmetic and logic control algorithm. Small volume and hardware implementation is relatively simple, easy to install. Temperature acquisition system based on microcontroller is widely used by puter, auto test, a number of microelectronics and automatic control technology, signal acquisition is not only convenient, simple and great advantages of flexibility, but also can greatly improve the technical indicators measured temperature . Key words: RS485 bus； Singlechip microputer； Temperature measurement system － II－ 蘭州交通大學(xué)畢業(yè)設(shè)計（論文） 目 錄 摘 要 ..................................................................................................................................... I Abstract ..................................................................................................................................... II 目 錄 .................................................................................................................................. III 1 緒論 ........................................................................................................................................ 4 課 題 背 景 與 意義 ......................................................................................................... 4 課題研究現(xiàn)狀 ............................................................................................................. 3 本 課 題 的 研 究 內(nèi) 容 與 目標(biāo) ......................................................................................... 3 2 基本方案比較 ........................................................................................................................ 4 設(shè) 計 方 案一 ................................................................................................................. 4 設(shè) 計 方 案二 ................................................................................................................. 5 設(shè) 計 方 案三 ..........................................................................................
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