学位论文-—基于at89s51单片机的电子血压计设计.doc

PAGEIV
基于AT89S51单片机的电子血压计设计
摘要
电子血压计具有易携带、精度高、智能化等特点，随着现代电子技术的发展，电子血压计呈现出家用化的趋势。然而传统单片机的电路设计复杂、稳定性不好、测量精度不高，因此本设计首先从血压测量方法切入设计出电路系统，然后以AT89S51单片机为控制核心，外围硬件电路由气体压力传感器US9111、串行A/D转换芯片ADC0832、LCD驱动芯片和其他模拟电路组成，同时采用KeiluVision2进行C语言编程来使硬件满足一个简易血压计的功能。本文所设计的血压计稳定性高，测量速度快，测量精度高，测试结果基本与水银血压计一致。另外，本系统的设计能满足人体健康测量需要，对提高日常生活质量有很多好处，具有很高的市场价值。

关键词:单片机血压计传感器精度
TheDesignofElectronicSphygmomanometerBasedonAT89S51MCU
Abstract
Theelectronicbloodpressuremonitoriseasytobecarried,highaccuracy,intelligentfeatures.Withthedevelopmentofmodernelectronictechnology,electronicbloodpressuremonitorshowsthetrendofthehousehold.Thecircuitofthetraditionalmicrocontroller’sdesignprocessiscomplex,andthestabilityisnotgood,aswellasthatthemeasurementaccuracyisnothigh.Therefore,tosumup,themethodofhowtodesignthecircuitsystemisthebloodpressuremeasurementbriefly,andthenaroundtheAT89S51microcontrollerdevelopmentplatform,composedoftheperipheralhardwarecircuitbythegaspressuresensorUS9111,theserialA/DconversionchipADC0832,theLCDdriverchipandotheranalogcircuitsunderthepreparationofKeiluVision2theCprogramminglanguage.Thissphygmomanometerdesignedperfectstability,excellentspeed,highaccuracy,andaboveall,thetestresultsarebasicallyconsistentwiththemercurysphygmomanometer.Inaddition,thedesignofthissystemmeetstheneedsofthehumanhealthmeasurement.Moreover,therearemanybenefitstoimprovethequalityofdailylife,andofcourseithasaveryhighmarketvalue.

KeyWords:MCU;sphygmomanometer;sensor;accuracy;
目录
TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc325563687"1.绪论 PAGEREF_Toc325563687\h1
HYPERLINK\l"_Toc325563688"1.1课题背景与现实意义 PAGEREF_Toc325563688\h1
HYPERLINK\l"_Toc325563689"1.2血压计发展现状 PAGEREF_Toc325563689\h2
HYPERLINK\l"_Toc325563690"1.3本文的研究内容 PAGEREF_Toc325563690\h3
HYPERLINK\l"_Toc325563691"2.设计要求及方案论证 PAGEREF_Toc325563691\h4
HYPERLINK\l"_Toc325563692"2.1血压测量原理 PAGEREF_Toc325563692\h4
HYPERLINK\l"_Toc325563693"2.2设计要求 PAGEREF_Toc325563693\h5
HYPERLINK\l"_Toc325563694"2.3设计方案 PAGEREF_Toc32556369