基于单片机的自动滴灌系统的设计

毕业设计（论文）基于单片机的自动滴灌系统的设计专业名称：机械制造与自动化学生姓名：薛路路导师姓名：郝文玲焦作大学机电工程学院2013年12月基于单片机的自动滴灌系统的设计Thedesignofautomaticirrigationsystembasedonsinglechipmicrocomputer姓名薛路路学制三年专业机械制造与自动化导师郝文玲职称副教授论文提交日期13.12.30论文答辩日期14.1.1焦作大学机电工程学院焦作大学机电学院毕业设计（论文）摘要I摘要自动控制节水滴灌技术的高低代表着农业现代化的发展状况，滴灌系统自动化水平较低是制约我国高效农业发展的主要原因。单片机控制的滴灌节水滴灌系统，该系统可对不同土壤的湿度进行监控，并按照作物对土壤湿度的要求进行适时、适量灌水，其核心是单片机和PC机构成的控制部分，主要对土壤湿度与灌水量之间的关系、滴灌控制技术及设备系统的硬件、软件编程各个部分进行实现。单片机控制部分采用AT89C51单片机为核心，主要由土壤湿度传感器，信号处理电路，显示电路，输出控制电路，故障报警电路等组成，软件选用汇编语言编程。单片机可将土壤湿度传感器检测到的土壤湿度模拟量转换成数字量，显示于LED显示器上。该系统灵活性强，易于操作，可靠性高，将会有更广阔的开发前景。关键字：自动滴灌系统单片机AT89C51焦作大学机电学院毕业设计（论文）摘要IIAbstractThediscretionoftheautomaticcontrolofwater-savingirrigationtechnologyrepresentsthedevelopmentofagriculturalmodernization,totheChina'sefficientirrigationsystemtothelowlevelofautomationisthemaincauseofagriculturaldevelopment.Single-chipmicrocomputercontrolofdripirrigationwatersavingirrigationsystem,thesystemcanbeofdifferentsoilhumiditymonitor,andtimelyinaccordancewiththerequirementsofthecropsonsoilmoisture,adequatewater,itscoreisasingle-chipmicrocomputerandPCagenciesintocontrolpart,mainlyontherelationshipbetweensoilmoistureandirrigationwater,irrigationcontroltechnologyandequipmentsystemtoimplementvariouspartsofhardwareandsoftwareprogramming.Single-chipmicrocomputercontrolpartadoptsAT89C51asthecore,mainlybythesoilmoisturesensor,signalprocessingcircuit,displaycircuit,theoutputcontrolcircuit,faultalarmcircuitandsoon,softwareuseassemblylanguageprogramming.MCUsoilhumiditysensorstodetectsoilmoisturecanbeanalogconversiontodigitalquantity,displayonLEDdisplay.Thesystemflexibilityisstrong,easytooperate,highreliability,therewillbemorebroadprospectsfordevelopment.Keywords:AutomaticdripirrigationsystemSinglechipmicrocomputerAT89C51焦作大学机电学院毕业设计（论文）目录III目录摘要.....................................................................................................................................IAbstract...............................................................................................................................II第一章绪论.......................................................................................................................11.1引言.......................................................................................................................11.2节水滴灌系统概述............................................................................................21.3本设计任务和主要内容....................................................................................3第二章滴灌系统总体设计方案.......................................................................................42.1计算机控制系统的基本形式................................................................................42.2系统总体方案......................................................................................................42.2.1AT89C51微控器构成的最小系统..........................................................52.2.2数据采集部分.........................................................................................52.2.3显示部分.................................................................................................62.2.4供电电源单元.........................................................................................7第3章系统硬件电路设计.............................................................................................83.1本系统的硬件设计概述......................................................................................83.2单片机的选择及分析........................................................................................83.2.1单片机的定义和特点.............................................................................83.2.2单片机的发展概况.................................................................................93.2.3本系统单片机的选择...........................................................................103.3本系统硬件电路部分......................................................................................143.3.1系统的工作原理...................................................................................143.3.2单片机主系统电路...............................................................................143.3.3时钟电路...............................................................................................153.3.4数据存储的扩展电路...........................................................................153.3.5数据采集处理电路...............................................................................163.3.6LED显示电路........................................................................................173.4电磁离合器异步电动机..................................................................................183.4.1电机概念介绍.......................................................................................183.4.2电磁离合器电机结构及原理...............................................................19焦作大学机电学院毕业设计（论文）目录IV第4章系统软件设计...................................................................................................204.1本系统的主程序设计......................................................................................204.2采样子程序设计.............................