基于單片機的心率計設計（based on scm cardiotachometer design）

1、目錄目錄摘要..................................................................3英文摘要..............................................................31引言...............................................................41.1心率計的研究背景和意

2、義............................................41.2心率計的研究現狀及發(fā)展動態(tài)........................................42方案論證及元器件選擇................................................52.1研究內容及設計指標.............................................

3、...52.2方案設計與論證....................................................52.2.1傳感器的選擇與論證..............................................52.2.2信號處理方案選擇和論證..........................................72.2.3單片機系統選擇和論證..................

4、..........................82.2.4顯示模塊選擇和論證..............................................92.3元器件選擇及其功能介紹.............................................92.3.1單片機AT89S52...................................................92.3.2

5、紅外傳感器......................................................112.3.3雙運算放大器LM358N.............................................112.3.4LCD12864.......................................................123硬件系統設計..................

6、.....................................133.1系統設計框圖.....................................................133.2信號采集電路.....................................................143.3信號放大電路............................................

7、.........153.3.1一級信號放大電路................................................153.3.2電源模塊設計...................................................163.4信號比較電路.....................................................173.5LCD顯示電路........

8、.............................................183.6記憶電路.........................................................183.7鍵盤電路.........................................................194軟件設計....................................

9、.......................194.1測量計算原理.....................................................204.2主程序流程圖.....................................................20基于單片機的心率計設計基于單片機的心率計設計基于單片機的心率計設計摘要摘要：在社會飛速發(fā)展的今天，人們的物質文化生活得到了極大的提高，

10、但同時多種疾病威脅著人們的生命；而心臟病又是人們難以預防的突發(fā)致命疾病，所以健康也被越來越多的人所重視。本設計要解決的問題就是可以測量心率、預防心臟病等心臟方面疾病的數字心率計。便攜式數字人體心率計運用AT89S52單片機作為核心控制處理單元，采用紅外傳感器作為傳感器，運用軟件和硬件雙重濾波技術實現了對人體心率信號的準確檢測。測量范圍40—120次分，小于40次或大于120次聲光報警，傳感器可以放在身體脈搏明顯的任何部位，測量結果以數字

11、方式存儲并顯示，測量精確到2次分?？梢詼y試多人，全部數據完全實現代碼識別、掉電存儲。同時在特色和創(chuàng)新部分還擴展了可以由微機控制清除儀表的存儲數據，也可以由儀表自行清除的功能。為方便儀表數據的查詢，又設計了上翻、下翻按鈕。經過大量實驗，本心率計已經基本達到題目要求部分的全部指標。關鍵字關鍵字：心率；紅外傳感器；單片機AT89S52BasedonSCMcardiotachometerdesignAbstract：Todayintherapi

12、ddevelopmentofsocietypeoplesmaterialculturallifehasbeengreatlyimprovedbutalsoavarietyofdiseasesthreateningpeopleslivesheartattackisitdifficulttopreventsuddenfataldiseasesohealthisalsovaluedbymemepeople.Thedesignproblemto

13、besolvedisthatyoucanmeasureheartratecardiacdiseaseheartdiseaseotherdigitalcardiotachometer.PtabledigitalcardiotachometeradoptAT89S52SCMasthececontrolbytheprocessingunitusinginfraredsensassensusingthesoftwarehardwaredoubl

14、efilteringtechnologytoachievethehumanheartrateftheaccuratedetectionsignal.Measurementrange40120timespointslessthan40timesmethan120timesthesenscansoundlightalarminanypartofthebodypulseobviousthemeasuredresultssteddigitall

15、ydisplaymeasurementprecisionto2timesperminute.Cantestpeoplealldatacompletelyrealizedcodeidentificationoffelectricitystage.Meanwhileinfeaturesinnovationpartisexpedbymicrocomputercontrolcanbeclearedinstrumentstedataalsocan

16、bemadebyinstrumenttocleanfunction.Ftheconvenienceofmeterdataquerydesignedaoverturntonextbutton.AfteralotofexperimentsthecardiotachometerhasfullyreachthetopicbasicrequirementspartKeywds:heartrate；infraredtransducer；microc