數(shù)字顯示式電子體溫計

電子機電論文編號:JD080   附開題報告,字數(shù):13942,頁數(shù):51

目錄

摘要

前言……………………………………………………………………………1

正文

1 功能和方案論證     

1.1 功能及設計要求的概敘…………………………………………1

  1.1.1 功能概敘……………………………………………………1

  1.1.2 設計要求概敘………………………………………………1

  1.2 方案論證…………………………………………………………1

    1.2.1 器件選擇方案………………………………………………1

    1.2.2電路的設計方案……………………………………………3

2 硬件系統(tǒng)設計

2.1 各部分硬件原理說明……………………………………………4

   2.1.1 MAX6626智能溫度傳感器原理說明………………………4

   2.1.2 各部分硬件簡單說明………………………………………9                    

  2.2 硬件電路部分說明………………………………………………12

     2.2.1 MAX6626智能溫度傳感器電路……………………………12

     2.2.2 主機電路……………………………………………………12

     2.2.3 顯示電路……………………………………………………14

     2.2.4 復位電路……………………………………………………15

          2.2.5 晶振電路……………………………………………………15

   2.3 系統(tǒng)總電路功能及工作流程概敘………………………………16

     2.3.1 總電路圖……………………………………………………16

     2.3.2 工作流程圖…………………………………………………17

   2.4 人機界面設計……………………………………………………18

 3 軟件系統(tǒng)分析

   3.1 軟件系統(tǒng)概敘……………………………………………………18

     3.1.1 主程序………………………………………………………19

     3.1.2 單片機模擬程序……………………………………………20

     3.1.3 MAX6626設置程序…………………………………………21

     3.1.4 顯示程序……………………………………………………23

     3.1.5 延時程序……………………………………………………24

3.1.6 按鍵程序……………………………………………………25

 4 系統(tǒng)組裝與調試

   4.1 引言…………………………………………………………………26

       4.2元件的檢測與安裝焊接……………………………………………26

   4.3 硬件系統(tǒng)調試………………………………………………………27

            4.3.1斷電調試……………………………………………………28     

      4.3.2通電調試……………………………………………………28

      4.3.3常見問題……………………………………………………28

4.4 軟件調試與實驗分析………………………………………………29

 5 設計一個好的印刷電路板

5.1 印刷電路板設計基本要求……………………………………………30

      5.2 印刷電路的技巧………………………………………………………31

 6畢業(yè)設計總結………………………………………………………………32

致謝…………………………………………………………………………………32

參考文選……………………………………………………………………………33

附錄…………………………………………………………………………………34

英文摘要……………………………………………………………………………36

摘要  現(xiàn)代信息技術的三大基礎是信息采集(即傳感器技術)、信息傳輸(通信技術)和信息處理(計算機技術)。傳感器屬于信息技術的前沿尖端產品，尤其是溫度傳感器種類日益繁多，數(shù)字溫度傳感器更因適用于各種微處理器接口組成的自動溫度控制系統(tǒng)具有可以克服模擬傳感器與微處理器接口時需要信號調理電路和A/D轉換器的弊端等優(yōu)點，被廣泛應用于工業(yè)控制、電子體溫計、測溫儀器等各種溫度控制系統(tǒng)中。智能溫度傳感器(亦稱數(shù)字溫度傳感器)是在20世紀90年代中期問世的。它是微電子技術、計算機技術和自動測試技術(ATE)的結晶。它們內部都包含溫度傳感器、A/D轉換器、信號處理器、存儲器(或寄存器)和接口電路。有的產品還帶多路選擇器、中央控制器(cpu)、隨機存取存儲器(RAM)和只讀存儲器(ROM)。智能溫度傳感器的特點是能輸出溫度數(shù)據(jù)及相關的溫度控制量，適配各種微控制器(MCU)；并且它是在硬件的基礎上通過軟件來實現(xiàn)測試功能的，其智能化程度也取決于軟件的開發(fā)水平。對某些智能溫度傳感器而言，單片機還可通過相應的寄存器來設定其A/D轉換速率(典型產品為MAX6654)，分辨力及最大轉換時間(典型產品為DS1624)。

關鍵詞   電子體溫計  智能溫度傳感器  單片機       

  Abstract  The modern information technology three big foundations areinformation gathering (namely sensor technology), the intelligencetransmission (communication) and the information processing (computertechnology). The sensor belongs to the information technology the frontstate-of-the-art product, the temperature sensor type day by day is inparticular many, the digital temperature sensor when is suitable hasto each kind of microprocessor connection composition automatictemperature control system may overcome simulates the sensor and themicroprocessor connection needs the signal to recuperate electriccircuit and A/D switch merit and so on malpractice,Is widely applied to the industry control, the electronic clinicalthermometer, the temperature-measuring device and so on in each kindof temperature control system. The intelligent temperature sensor(also called digital temperature sensor) is published in the 1990sintermediate stages. It is the micro electron technology, the computertechnology and the test automation technology (ATE) crystallization.Their interior all contains the temperature sensor, the A/D switch,the signal processor, the memory (or register) and the connectionelectric circuit. Some products also bring the multichannel selector,the central controller (cpu), the random access memory (RAM) and thenon-erasable storage (ROM).

The intelligent temperature sensor characteristic is can output thetemperature data and the correlation temperature control quantity,suitably matches each kind of micro controller (MCU); And it isrealizes the test function in the hardware foundation throughsoftware, its intellectualized degree also is decided by the softwaredevelopment level. Speaking of certain intelligent temperature sensors, the monolithicintegrated circuit also passable corresponding register hasestablished its A/D transformation speed (typical product is MAX6654),the resolving power and the biggest switching time (typical product isDS1624).

Key word      Electronic clinical thermometer   Intelligent temperature sensor          Monolithic integrated circuit