基于单片机的病床呼叫系统设计摘要病房呼叫系统是传送临床信息的重要手段,可将病人的请求快速传送给值班医生或护士,它主要用于协助医院病员在病床上方便地呼叫医务人员，是提高医院和病室护理水平的必备设备之一。让患者需要服务时，只要按一下随身携带的呼叫器，信息立马就能传至护工处.避免没有看护人在时,病人急需服务却无法通知医生的情况.它要求及时、准确、可靠、简便可行。本设计的呼叫系统由按键检测，数据处理，信息显示三部分组成。由C51单片机作为主要控制器，利用液晶显示器作为显示部分，使用3X8矩阵开关分别模拟医院病房与病床位数。病人按下按键时，C51立即获取病人的病房号和病床号，同时采集此时的时间并一起显示在液晶显示器上，当护士看到显示器上病人的信息，并按下清零键后，液晶显示器恢复到初始状态。本系统对键盘的检测采用中断的方式，能够提高系统的立即性和高效性。当同时有数个病床呼叫时，本系统还可以循环呼叫记录显示。关键词：病房呼叫单片机中断液晶显示DesignofhospitalbedcallsystembasedonsinglechipmicrocomputerSummaryWardcallsystemisanimportantmeanstotransfertheclinicalinformation,thepatient'sIrequestcanbequicklytransmittedtothedoctorornurseonduty,itismainlyusedtoassistthehospitaleasilycallthemedicalstaffinahospitalbed,isoneofthenecessaryequipmenttoimprovethelevelofnursingandhospitalward.Letthepatientneedservice,justclickthethecarrypagerinformationcanspreadtotheworkers.Immediatelywithoutcaregiverswhenpatientsneededservicescannottellthedoctor.Itrequirestimely,accurateandreliable,simpleandfeasible.Thedesignofthecallsystembythekeydetection,dataprocessing,informationdisplaythreeparts.C51microcontrollerasthemaincontroller,theuseofliquidcrystaldisplayasthedisplaypart,theuseof3X8matrixswitchtosimulatethehospitalwardandhospitalbeds.Whenthepressbuttonispressed,theC51immediatelygetsthepatient'swardnumberandthebednumber,whilethetimeiscollectedanddisplayedontheLCDmonitor,whenthenurseseesthepatient'sinformationandpresstheresetbutton,theLCDscreenisreturnedtoitsinitialstate.Thissystemcanimprovetheimmediateandefficiencyofthesystembyusingtheinterruptmode.Whenthereareanumberofhospitalbedscall,thesystemcanalsobeacircularcallrecordsshow.Keywords:wardcall,SCM,interrupt,liquidcrystaldisplayII目录前言........................................................................................................................................I第1章绪论............................................................................................................31.1课题概述........................................................................................................................31.2智能病床呼叫系统发展概况........................................................................................31.3课题研究的目的和意义................................................................................................31.4设计任务........................................................................................................................41.5任务要求分析................................................................................................................4第2章系统设计和方案选择........................................................52.1设计思路........................................................................................................................52.2键盘采集方案选择........................................................................................................52.3设计芯片的选择.....................
