光纤光栅车辆超载检测系统设计摘要近些年来，我国的经济在以十分迅速的态势在发展，道路运输业得到了迅速的发展，并成为主要的运输方式。在快速发展的同时，由于公路管理机制不够健全，车辆的超载超限问题十分普遍，车辆超限超载运行使得我们国家的公路受到严重的损坏。除此之外，对交通安全和环境保护也有很大的影响。如果想要从源头上治理车辆超载超限的问题，就对使用的称重传感器提出了更高的要求。光纤光栅具有很多的优点，它由于传感灵敏度好、能够适应各种恶劣的工作环境、工作性能稳定而倍受人们的青睐本文基于光纤光栅对外界应力的测量。具体所做的研究内容如下：首先对光纤光栅的理论模型进行了分析，在这个基础上，对其传感特性进行了分析。其次设计了一种结构为悬臂梁式的称重传感器，并在此基础上，对结构的受力情况进行了详细的分析，最后，通过建立实验模型，验证系统的可实现性。关键词:布喇格光栅；悬臂梁结构；应力变化；车辆称重I燕山大学本科生毕业设计（论文）AbstractInrecentyears,China'seconomyhasbeendevelopinginaveryrapidsituation,andtheroadtransportindustryhasdevelopedrapidlyandhasbecomethemainmodeoftransportation.Atthesametimeofrapiddevelopment,duetotheimperfectroadmanagementmechanism,theproblemofoverloadandoverrunofvehiclesisverycommon.Theoverloadandoverloadoperationofvehicleshascausedseriousdamagetoourcountry'shighways.Inaddition,ithasagreatimpactontrafficsafetyandenvironmentalprotection.Ifyouwanttomanagetheproblemofoverloadingthevehiclefromthesource,itputshigherrequirementsontheloadcellused.Fibergratinghasmanyadvantages,anditisfavoredbypeoplebecauseofitsgoodsensingsensitivity,abilitytoadapttovariousharshworkingenvironments,andstableworkingperformance.Thispaperisbasedonthemeasurementofexternalstressbyfibergrating.Thespecificresearchcontentisasfollows:Firstly,thetheoreticalmodeloffiberBragggratingisanalyzed.Onthisbasis,itssensingcharacteristicsareanalyzed.Secondly,aloadcellwithacantileverbeamstructureisdesigned.Basedonthis,thestructuralstressisanalyzedindetail.Finally,theexperimentalmodelisestablishedtoverifytheachievabilityofthesystem.KeywordsBragggrating；Cantileverbeamstructure；Stresschanges；VehicleweighingII目录目录摘要........................................................................................................................................IAbstract.................................................................................................................................II第1章绪论.................................................................................................................-1-1.1选题的背景、目的和意义.............................................................................-1-1.1.1选题背景.....................................................................................................-1-1.1.2选题目的和意义.........................................................................................-2-1.2国内外研究现状.............................................................................................-4-1.3本文研究内容.................................................................................................-5-第2章光纤Bragg光栅理论研究.............................................................................-6-2.1光纤BRAGG光栅理论模型...........................................................................-6-2.2光纤BRAGG光栅结构及传感原理...............................................................-8-2.2.1光纤Bragg光栅的基本结构.........................
