【正文】 重慶科技學(xué)院高等教育自學(xué)考試本科畢業(yè)論文 中文摘要 I 摘 要 本課題 本系統(tǒng)采用 PT100 熱電阻溫度傳感器和單片機(jī)組成可靠性高、功耗低的溫度檢測系統(tǒng)。 以 AT89C51 單片機(jī)系統(tǒng)為核心，對單點的溫度進(jìn)行實時檢測。采用模擬溫度傳感器 PT100 對溫度進(jìn)行檢測；采用串型模數(shù)轉(zhuǎn)換器 ADC0809 進(jìn)行A/D轉(zhuǎn)換把溫度信號調(diào)解轉(zhuǎn)換為電壓信號與 AT89C51單片機(jī)接口設(shè)置 LED八段數(shù)碼管實時顯示溫度值。本設(shè)計包括溫度傳感器、 A/D 轉(zhuǎn)換模塊、數(shù)據(jù)傳輸模塊、溫度顯示模塊四個部分。 關(guān)鍵詞： 單片機(jī)， PT100 熱電阻， ADC0809，溫度檢測 重 慶科技學(xué)院高等教育自學(xué)考試本科畢業(yè)論文 英文摘要 II The design of Single Chip Microputer Temperature Detection System Based on the Resistive Thermal Detector of PT100 Abstract This article AT89C51 monolithic integrated circuit which produces by ATMEL Corporation is the core, can inspect a single point of the temperature in real time. The adoption of the serial A/D for temperature signals into voltage signal mediation AT89C51 SingleShip Compute interfaces with the eighth LED digital display of realtime temperature. The design includes four parts of the temperature sensor and the A / D converter module and the data transmission modules and the temperature display module. Each part functions and the process was described in the Paper in detail. Key words： SingleShip Computer。 Resistive Thermal Detector of PT100。 ADC0809。 Measuretemperature 重慶科技學(xué)院高等教育自學(xué)考試本科畢業(yè)論文 目 錄 1 目 錄 摘 要 ...................................................................................................................... I Abstract .....................................................................................................................II 1 緒論 .......................................................................................................................... 1 課題背景 ............................................................................................................ 1 方案論證 ............................................................................................................ 2 單片機(jī)選型 .............................................................................................. 2 模數(shù)轉(zhuǎn)換器選型 ....................................................................................... 3 顯示方案確定 .......................................................................................... 3 2 硬件設(shè)計 ................................................................................................................ 4 溫度信號的獲取與放大 ...................................................................................... 4 元件介紹 ................................................................................................. 4 放大電路設(shè)計 .......................................................................................... 4 模數(shù)轉(zhuǎn)換單元 .................................................................................................... 5 8位串行 A/D轉(zhuǎn)換器 ADC0809 ................................................................... 5 模數(shù)轉(zhuǎn)換單元電路的設(shè)計 ......................................................................... 7 鍵盤電路的設(shè)計 ................................................................................................. 8 LED顯示電路的設(shè)計 ........................................................................................... 8 LED數(shù)碼管原理 ....................................................................................... 9 LED數(shù)碼管編碼方式 ................................................................................ 9 LED數(shù)碼管顯示方式和典型應(yīng)用 ............................................................. 10 LED數(shù)碼管的原理圖 ...............................................................................11 聲光報警電路 .................................................................................................. 12 單片機(jī)接口電路 ............................................................................................... 13 .................................................................................. 13 .............................................................................. 13 3 軟件設(shè)計 .............................................................................................................. 16 程序設(shè)計語言的選用 ........................................................................................ 16 軟件程序的設(shè)計 ............................................................................................... 16 程序流程 ............................................................................................... 16 鍵盤管理 ............................................................................................... 17 LED顯示 ................................................................................................ 18 重慶科技學(xué)院高等教育自學(xué)考試本科畢業(yè)論文 目錄 2 模擬量的采集與處理 .............................................................................. 18 .............................................................................................................. 22 4 抗干擾設(shè)計 ......................................................................................................... 29 用于單片機(jī)系統(tǒng)的干擾抑制元件 ...................................................................... 29 提高單片機(jī)系統(tǒng)抗干擾能力的主要手段 ............................................................ 29 5 結(jié) 論 ................................................................................................................... 31 致 謝 ................................................................................................................... 32 參考文獻(xiàn) ....................................................................................................................................33 論文原創(chuàng)性聲明 ........................................................................... 錯誤 !未定義書簽。 重慶科技學(xué)院高等教育自學(xué)考試本科畢業(yè)論文 緒 論 1 1 緒論 課題背景 在人類的生活環(huán)境中，溫度扮演著極其重要的角色。無論你生活在哪里，從事什么工作，無時無刻不在與溫度打著交道。自 18 世紀(jì)工業(yè)革命以來，工業(yè)發(fā)展