目录......................................................1...............................................3.....................................3.................................3..........................3..............................4.......................................8........................9..............................................9传感器模块.....................................9..................................11......................................11报警模块......................................11.............................................12.........................................14.......................17.............................................17.................................18.......................20.......................................20.................................22.......................................23.................................................24.....................................................25摘要汽车产业近年来取得不断的进步，给人们带来便利，但环境与能源问题日益严重。为了应对环境和能源问题，且新能源汽车对环境的危害较小，故新能源汽车得到推行。由于道路坡度的变化会影响汽车的起步、行进、驻坡等行驶状况，因此对道路坡度的测量对于汽车能够以良好性能来运行十分重要。本文介绍了新能源汽车坡度估算的重要性；分析各种坡度测量传感器的工作原理；通过高精度六轴运动处理传感器MPU6050来检测节点，确定测量车辆俯仰角的方案；为了提高数据可靠性和角度信息检测的准确性，将测得的角度与实际俯仰角度进行比较，验证本设计方案的准确性和可行性;对CAN总线通讯方案进行了介绍；建立坡度信号应用框图，并结合汽车动力学方程分析了道路坡度的变化对新能源汽车内部工作规律的影响。关键词：新能源汽车，坡度估计，CAN，MPU6050AbstractTheautomobileindustryhasmadecontinuousprogressinrecentyears,whichbringsconveniencetopeople,buttheenvironmentalandenergyproblemsareincreasinglyserious.Inordertodealwithenvironmentalandenergyproblems,andtheharmofnewenergyvehiclestotheenvironmentisrelativelysmall,newenergyvehicleshavebeenimplemented.Becausethechangeofroadslopewillaffectthedrivingconditionsofthecar,suchasstarting,marchingandstayingontheslope,itisveryimportanttomeasuretheroadslopeforthecartorunwithgoodperformance.Thispaperintroducestheimportanceofslopeestimationofnewenergyvehicles,analyzestheworkingprincipleofvariousslopemeasuringsensors.Thenodeisdetectedbythehigh-precisionsix-axismotionprocessingsensorMPU6050.Inordertoimprovethedatareliabilityandtheaccuracyofangleinformationdetection,themeasuredangleiscomparedwiththeactualpitchangle,andtheaccuracyandfeasibilityofthisdesignschemeareverified.Thecommunicationschemeofcanbusisintroduced.Theapplicationblockdiagramofslopesignalisestablished,andtheinfluenceofroadslopechangeontheinternalworkingruleofnewenergyvehicleisanalyzedbycombiningwiththevehicledynamicsequation.Keywords:newenergyvehicles,slopeestimation,CAN,MPU6050第一章绪论1.1研究背景与意义随着科技的快速发展和日益增长的生活需求，汽车产业历经了一系列变革，汽车占有量逐年增长，汽车产业急剧发展。然而汽车数量增多有利有弊，一方面促进了社会更快发展，另一方面，车辆的增多也给道路带来拥堵，交通压力增大，其中最令人担忧的就是传统内燃机汽车所排放的大量尾气所带来的环境污染问题。环境问题在全世界范围的各个国家都备受关注，生产力发展、社会进步的同时也应当尽量降低对自然环境所造成的损害。加大新能源汽车的市场投入与使用旨在降低油耗、减小对石油进口的依赖，实现能源安全与环境友好，有效地起到节能减排的效果...
