基于at89s51单片机的电子血压计设计毕业设计.pdfVIP

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

I

TheDesignofElectronicSphygmomanometerBasedonAT89S51MCU

Abstract

Theelectronicbloodpressuremonitoriseasytobecarried,highaccuracy,

intelligentfeatures.Withthedevelopmentofmodernelectronictechnology,

electronicbloodpressuremonitorshowsthetrendofthehousehold.Thecircuit

ofthetraditionalmicrocontroller’sdesignprocessiscomplex,andthestability

isnotgood,aswellasthatthemeasurementaccuracyisnothigh.Therefore,to

sumup,themethodofhowtodesignthecircuitsystemisthebloodpressure

measurementbriefly,andthenaroundtheAT89S51microcontrollerdevelopment

platform,composedoftheperipheralhardwarecircuitbythegaspressuresensor

US9111,theserialA/DconversionchipADC0832,theLCDdriverchipandother

analogcircuitsunderthepreparationofKeiluVision2theCprogramminglanguage.

Thissphygmomanometerdesignedperfectstability,excellentspeed,highaccuracy,

andaboveall,thetestresultsarebasicallyconsistentwiththemercury

sphygmomanometer.Inaddition,thedesignofthissystemmeetstheneedsofthe

humanhealthmeasurement.Moreover,therearemanybenefitstoimprovethequality

ofdailylife,andofcourseithasaveryhighmarketvalue.

KeyWords:MCU;sphygmomanometer;sensor;accuracy;

II

目录

1.绪论1

1.1课题背景与现实意义1

1.2血压计发展现状2

1.3本文的