基于PLC棉花地灌溉及施肥自动控制系统设计
河北理工大学信息学院
摘要
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摘要
借助集成自动化控制技术、传感器检测技术以及智能监控软件，基于PLC的棉花地灌溉施肥自动控制系统达成了对棉花地水肥管理的精确监测以及智能调控。此系统将西门子S7-200系列PLC当作核心控制器，与液位传感器、湿度传感器相配合，实时收集储水箱水位以及田间土壤湿度等关键参数。依据预先设定的灌溉阈值与施肥方案，系统对进水泵、分区灌溉泵、施肥装置还有搅拌设备等执行机构进行自动控制，保证水肥供应能精准契合棉花生长所需。该系统具备手动和自动两种运行模式，能够依照实际需求灵活转换操作方式。利用MCGS组态软件搭建的可视化监控界面，具备实时数据展示、参数设定、报警记录以及数据存储等功能。历经系统的硬件调试、软件验证以及实地测验，该系统实现了高效且稳定的水肥管理，大幅提升了灌溉效率与肥料利用率，降低了人工成本与资源浪费，为棉花种植给出了科学、智能的栽培管理方案，有力推动了精准农业的可持续发展进程。
关键词PLC；液位传感器；湿度传感器；实时监控；
Abstract
Abstract
Abstract
ThePLCbasedautomaticcontrolsystemforirrigationandfertilizationincottonfieldsintegratesautomationcontroltechnology,sensordetectiontechnology,andintelligentmonitoringsoftwaretoachieveprecisemonitoringandintelligentregulationofwaterandfertilizermanagementincottonfields.ThesystemusesSiemensS7-200seriesPLCasthecorecontroller,combinedwithliquidlevelsensorsandsoilmoisturesensors,toreal-timecollectkeyparameterssuchaswaterlevelinthestoragetankandsoilmoistureinthefield.Throughpresetirrigationthresholdsandfertilizationschemes,thesystemautomaticallycontrolstheexecutionmechanismssuchastheinletpump,zoneirrigationpump,fertilizationdevice,andmixingequipmenttoensureaccuratematchingofwaterandfertilizersupplywithcottongrowthneeds.Thesystemsupportsmanualandautomaticdual-modeoperation,andcanflexiblyswitchoperationmodesaccordingtoactualneeds.ThevisualmonitoringinterfaceconstructedbyMCGSconfigurationsoftwareprovidesreal-timedatadisplay,parametersetting,alarmrecording,anddatastoragefunctions.Afterhardwaredebugging,softwareverification,andfieldtesting,thesystemhasachievedefficientandstablewaterandfertilizermanagement,significantlyimprovingirrigationefficiencyandfertilizerutilization,reducinglaborcostsandresourcewaste,providingscientificandintelligentcultivationmanagementsolutionsforcottonpl