设计题目：土壤湿度无线检测系统的设计摘要传统的土壤检测系统，在面对复杂的地形条件等情况时，布线较为困难，且具有难以实现第一时间将采集的信息进行实时传输的缺陷。而土壤湿度无线检测系统能降低系统对人工的依赖性，实时传输信息，可以很好的实现人机分离。本设计为一种土壤湿度无线检测系统，利用无线通信技术，消除了复杂环境对土壤湿度检测的限制，并能有效实现对土壤湿度信息的有效传输，以便于对土壤湿度实时状况的监控。本系统分为探测和监测两部分，都是以STC89C52RC为控制芯片，YL-69湿度传感器为探测端，将采集到的信息经过A/D转换后通过NRF24L01无线通信芯片实现信息的传输，同时通过继电器控制水泵开关状态；监测端接收到信息后，通过LCD显示模块和报警模块实现人机对话与报警功能。本设计的输入电源电压为5V±0.2V，检测精度为0-80%，无线传输距离为5-10m。本设计结构简单，成本低，安装方便，具有实用性、实时性、小型化的特点。关键词：STC89C52RC；无线传输技术；土壤湿度检测AbstractThetraditionalsoildetectionsystemisdifficulttowireinthefaceofcomplexterrainconditions,andhasthedefectthatitisdifficulttorealizereal-timetransmissionofcollectedinformationinthefirsttime.However,thewirelessdetectionsystemofsoilhumiditycanreducethedependenceofthesystemonmanualworkandrealizetheseparationofmanandmachine.Thisdesignisakindofsoilhumiditywirelessdetectionsystem,whichuseswirelesscommunicationtechnologytoeliminatetherestrictionofcomplexenvironmentonsoilhumiditydetection,andcaneffectivelyrealizetheeffectivetransmissionofsoilhumidityinformation,soastofacilitatethemonitoringofsoilhumidityinrealtime.Thissystemisdividedintotwoparts:detectionandmonitoring.STC89C52RCisusedasthecontrolchipandYL-69humiditysensorisusedasthedetectionend.AfterA/Dconversion,thecollectedinformationistransmittedthroughNRF24L01wirelesscommunicationchip.Atthesametime,theswitchstateofthewaterpumpiscontrolledbyrelay.Afterreceivingtheinformation,themonitoringterminalrealizestheman-machinedialogueandalarmfunctionsthroughtheLCDdisplaymoduleandthealarmmodule.Theinputpowersupplyvoltageofthisdesignis5V±0.2V,thedetectionaccuracyis0-80%,andthewirelesstransmissiondistanceis5-10m.Thedesignhasthecharacteristicsofsimplestructure,lowcost,convenientinstallation,practicability,real-timeperformanceandminiaturization.Keywords:STC89C52RC；Wirelesstransmissiontechnology；Soilmoisturedetection；目录摘要..........................................................................................................................................IAbstract..............................................................................................................................................II0引言..........................................................................................................................................11研究内容......................................................................................................................................22系统方案......................................................................................................................................22.1系统框图介绍..................................................................................................................22.2方案的论证......................................................................................................................42.2.1A/D芯片的选择...................................................................................................42.2.2无...
