论文题目：矿用超声波物位传感器设计（软件）专业：自动化本科生：张米林（签名）指导老师：郭秀才（签名）摘要随着科技的进步和煤炭开采自动化程度的提高，煤矿安全检测监控系统为煤矿安全生产发挥了重要的作用。超声波物位传感器为煤矿安全检测监控系统提供了实时物位数据。所以超声波物位传感器的研究具有重要的意义。本设计以STC89C52单片机为核心处理器，有电源模块，超声波模块，温度模块，12864液晶显示模块，报警模块，D/A转换模块，压频转换模块等组成。测量距离时，先由软件产生40KHz的方波驱动超声波发射探头发射超声波，同时开始计时，通过超声波传播时间即可实现物位的测量。此外实现了温度的显示，报警等。最后将物位数据通过D/A转换转换为电压信号，再通过压频转换模块转换为频率信号，实现远距离传输，最后通过上位机显示。通过实验论证：该系统电路设计合理，工作稳定，检测速度快，在测量精度方面能达到工业要求，具有重要的现实意义。关键字：检测监控，超声波，单片机，传感器，物位Subject:ThesensordesignoftheMineultrasonicthinglocation(software)Specialty:AutomationName:Zhangmilin(signature)Instructor:Guoxiucai(signature)ABSTRACTWiththeadvancementoftechnologyandincreasedautomationofcoalmining,coalminesafetyinspectionandmonitoringsystemplayanimportantroleinthecoalminesafetyproduction.Ultrasoniclevelsensorprovidesreal-timepositiondataforcoalminesafetyinspectionandmonitoringsystem.Therefore,toresearchonultrasoniclevelsensorhasimportantsignificance.ThisdesignusesSTC89C52microcontrollerasthecoreprocessor,includepowermodule,ultrasonicmodule,temperaturemodule,12864liquidcrystaldisplaymodule,alarmmodule,D/Aconvertermodule,voltagetofrequencyconversionmoduleandsoon.Whenmeasuringdistance,firstbythesoftwaregeneratesa40KHzsquarewavetodriveultrasonictransmitterprobetransmittingultrasonic,andstartthetimer,canbeachievedbytheultrasonicpropagationtimemeasurementthinglocation,Inadditiontoachievetemperaturedisplay,alarmetc.FinallythinglocationdatathroughtheD/Aconverterconversiontoavoltagesignal,andthenthroughvoltage-frequencyconversionmoduleconvertsthefrequencysignal,toachievelongdistancetransmission,finallythroughthePCdisplay.Itwasprovedbyexperimentsthatthesystemdesignisreasonable,stable,fastdetectionspeed,measurementaccuracycanmeettherequirementofindustry,hastheimportantpracticalsignificance.KEYWORDS:inspectionandmonitoring,ultrasonic,microcontroller,sensor,thinglocation目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc358546960"1绪论PAGEREF_Toc358546960\h1HYPERLINK\l"_Toc