基于單片機(jī)的心率計設(shè)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(xiàn)狀及發(fā)展動態(tài)........................................42方案論證及元器件選擇................................................52.1研究內(nèi)容及設(shè)計指標(biāo).............................................

3、...52.2方案設(shè)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(jī)系統(tǒng)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(jī)AT89S52...................................................92.3.2

5、紅外傳感器......................................................112.3.3雙運(yùn)算放大器LM358N.............................................112.3.4LCD12864.......................................................123硬件系統(tǒng)設(shè)計..................

6、.....................................133.1系統(tǒng)設(shè)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(shè)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(shè)計....................................

9、.......................194.1測量計算原理.....................................................204.2主程序流程圖.....................................................20基于單片機(jī)的心率計設(shè)計基于單片機(jī)的心率計設(shè)計基于單片機(jī)的心率計設(shè)計摘要摘要：在社會飛速發(fā)展的今天，人們的物質(zhì)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(yù)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(shè)計要解決的問題就是可以測量心率、預(yù)防心臟病等心臟方面疾病的數(shù)字心率計。便攜式數(shù)字人體心率計運(yùn)用AT89S52單片機(jī)作為核心控制處理單元，采用紅外傳感器作為傳感器，運(yùn)用軟件和硬件雙重濾波技術(shù)實(shí)現(xiàn)了對人體心率信號的準(zhǔn)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(jié)果以數(shù)字

11、方式存儲并顯示，測量精確到2次分。可以測試多人，全部數(shù)據(jù)完全實(shí)現(xiàn)代碼識別、掉電存儲。同時在特色和創(chuàng)新部分還擴(kuò)展了可以由微機(jī)控制清除儀表的存儲數(shù)據(jù)，也可以由儀表自行清除的功能。為方便儀表數(shù)據(jù)的查詢，又設(shè)計了上翻、下翻按鈕。經(jīng)過大量實(shí)驗，本心率計已經(jīng)基本達(dá)到題目要求部分的全部指標(biāo)。關(guān)鍵字關(guān)鍵字：心率；紅外傳感器；單片機(jī)AT89S52BasedonSCMcardiotachometerdesignAbstract：Todayintherapi

12、ddevelopmentofsocietypeoplesmaterialculturallifehasbeengreatlyimprovedbutalsoavarietyofdiseasesthreateningpeopleslivesheartattackisitdifficulttopreventsuddenfataldiseasesohealthisalsovaluedbymemepeople.Thedesignproblemto

13、besolvedisthatyoucanmeasureheartratecardiacdiseaseheartdiseaseotherdigitalcardiotachometer.PtabledigitalcardiotachometeradoptAT89S52SCMasthececontrolbytheprocessingunitusinginfraredsensassensusingthesoftwarehardwaredoubl

14、efilteringtechnologytoachievethehumanheartrateftheaccuratedetectionsignal.Measurementrange40120timespointslessthan40timesmethan120timesthesenscansoundlightalarminanypartofthebodypulseobviousthemeasuredresultssteddigitall

15、ydisplaymeasurementprecisionto2timesperminute.Cantestpeoplealldatacompletelyrealizedcodeidentificationoffelectricitystage.Meanwhileinfeaturesinnovationpartisexpedbymicrocomputercontrolcanbeclearedinstrumentstedataalsocan

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