长途客车防超载控制系统的设计摘要在本设计当中主要通过STC89C52单片机的智能化运用，针对客车超载现象设计一款智能化预防控制系统，其中将HX711作为系统的称重芯片来对客车负载进行检测，同时运用了红外对射管F3来作为系统的核心。具体包括主程序控制模块、客车人数检测模块、客车称重子模块、LED显示模块、按键模块、声光报警模块、客车开/关点火模块。系统可以通过按键的方式来设置客车的负载重量最大限制与人数的控制，利用了数码管的显示方式可以监控显示车辆上的人员数量，在客车负载超出额定重量或者人数的时候，激发声光报警器，同时由继电器来控制打火，对汽车进行锁定。当客车人说和重量都符合要求后，报警才会接触，同时解除客车锁定。关键词：客车防超载；SCT89C52；F3红外对射管；HX711Anti-overloadcontrolsystemforintelligentbusAbstractThispaperdesignsasetofintelligentbusantioverloadcontrolsystembasedonsinglechipmicrocomputer.ThecoreofthesystemisSTC89C52microcontroller.ThecoreofthewholesystemisF3infraredtoradiotubeandHX711weighingchip.Itincludesmainprogramcontrolmodule,busnumberdetectionmodule,busweighingbaryonmodule,LEDdisplaymodule,keymodule,acousto-opticalarmmoduleandbuson/offignitionmodule.Theadjustmentoftheupperlimitofthebusnumberandtheadjustmentoftheupperlimitoftheweightcanbesetbythekey,andtheweightisdisplayedthroughthefourinonecommonanodedigitaltube,andthenumberisdisplayedthroughthetwoinonecommonanode.Whenthenumberofpassengercarsortheweightisoverloadedoroverloaded,thesoundandlightalarmwillbestarted.Atthesametime,theignitiondeviceofthebusisdisconnectedthroughtherelayandthecarislocked.Whenthebusmansaysandtheweightmeetstherequirements,thealarmwillcomeintocontactandthelockofthebusisrelieved.Keywords：Passengercaroverloading;SCT89C52;F3infraredraytube;HX711目录1绪论......................................................................................................................................12客车防超载智能监控系统设计..........................................................................................22.1元器件选型....................................................................................................................22.1.1主控制芯片选型....................................................................................................22.1.2显示模块选型........................................................................................................22.1.3称重模块选型........................................................................................................22.2总体设计........................................................................................................................33客车超载智能化防控系统的硬件设计..............................................................................43.1单片机最小系统............................................................................................................43.1.1STC89C52单片机介绍..........................................................................................43.1.2最小系统电路设计................................................................................................43.2人数监测系统的电路设计............................................................................................53.2.1F3红外对管介绍...................................................................................................53.2.1人数监测系统电路的设计.....................................................................
