安全底盘系统在车辆中的作用-物有所值(1)

FreescaleSemiconductorConfidentialProprietary.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004Safety&ChassisSystems安全&底盘系统StephanLehmannApril2005StrategicMarketingManagerGlobalAutomotiveSlide2FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004Safety/Chassissystemsinthevehicle–wellworthit安全/底盘系统在车辆中的作用–物有所值Globallyeveryyear1.2Miopeopledieinroadaccidents全球每年大约有120万人在车祸中丧生Casualtiese.g.ACEA:inEurope(EU-15)reducedfrom64,000people1980to41,000in2000在欧洲，死亡人数从1980年的64000减少到2000年的41000BeltsandBagsare75%effectiveinreducingseriousheadinjuries-beltsaloneonly50%effective采用安全带和安全气囊可使头部严重伤害减少75%，而光使用安全带则只能减少50%USHighwayInsuranceInstitute2004:ESC/ESPreducessinglecarfatalaccidentsby56%美国高速公路保险协会2004：ESC/ESP使单车致命事故减少56%Fatalities/10,000licensedmotorvehiclesinselectedcountries1996orlatestyearavailableSource:GlobalRoadSafetypartnership020406080100120140160180200UKJapanUSANewZealandBarbadosMalaysiaS.KoreaPakistanEgyptIndiaPeruSyriaBangladeshCameroonColombiaKenyaLesothoTanzaniaEthopiaSlide4FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004SafetySystems–ultimatelyitallcouldbeONE!安全系统–从根本上可以合为一体Sense传感器-Protect保护-Avoid避免先进的数据熔合技术将视频和雷达信号组合起来导航系统/Telematics数据熔合单元NDS雷达24GHz车辆跟随智能巡航控制FDS雷达77GHzCAN总线NDS雷达24GHzNDS雷达24GHz高速数据总线NDS:近距离探测FDS:远距离探测显示雷达和摄像头Slide5FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004AntilockBrakingSystem(ABS)制动防抱死系统防止车轮抱死，可以避开障碍物•车辆一直处于可控状态•减小刹车距离TractionControl(TCS)驱动力控制防止汽车在加速时车轮打滑ElectronicStabilityProgram(ESP,ESC)电子稳定程序监测车辆运动（纵向和横向的运动）监测驾驶员的驾驶意图转向角，刹车压力，发动机扭矩）电子稳定程序在后台一直处于工作状态Chassissystems–ABS,TCS&ESP底盘系统-ABS,TCS,ESP不带ABS带ABSSlide6FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004ESPSystemESP系统主动安全性系统的关键动作影响硬件和软件设计双微处理器(1，2个32位MCU)加速度，横摆角速度传感器飞思卡尔作为主要的供货商在ABS/ESP市场上处于领导地位，产品有微控制器，模拟器件和传感器HU主缸节气门位置传感器前轮速度传感器前轮速度传感器后轮速度传感器后轮速度传感器EMS压力传感器转向角传感器横向加速度传感器ECUENGINE横摆率传感器Slide7FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004AirbagSystemMarketDrivers安全气囊的市场动力•欧美的消费者愿意为安全买单•头部/侧面气囊和前面/侧面传感器数量的增加•美国有关对智能气囊的规定对占位区分和MCU性能提出更高的要求•提供全方位的功能，尤其对轻卡和SUV•可裁减的系统-要求标准化的接口和易于扩展的系统Slide8FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004AutomotiveAirbagApplication汽车安全气囊应用双线DSI总线碰撞区传感器占位传感系统侧气囊安全带扣紧传感器安全带预紧装置安全带预紧装置侧气囊侧向碰撞传感器前气囊多级充气中央控制单元侧向碰撞传感器Slide9FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004AirbagSystemsAirbagSystems––2approaches2approaches安全气囊安全气囊安全气囊---222种方案种方案种方案ConventionalAirbagSystemMCUMCUPWRPWRSupplySupplyAccelAccelSquibSquibDriversDriversSeatBeltSwitches2A2ms2A2ms2A2ms2A2ms2A2ms2A2ms2A2ms2A2ms2A2ms2A2ms2A2ms2A2msMCU+MCU+ACCELACCELMCU+MCU+ACCELACCELSideSensorsAirbags&Tensioners分布式气囊系统MCUMCU+ACCE+ACCELLMCUMCUBusBusInterfaceInterface总线接口总线接口AccelAccelSensorSensor侧面传感器位置传感器安全带开关BusIVBusIBusIIBusIII安全带预紧器前后气囊侧气囊SensorSensorMCUMCUPowerPowerSupplySupply中控单元分布式传感模块分布式执行模块BusSlaveBusSlaveBusSlaveBusSlaveSensorSensorBusSlaveBusSlave系统趋势•安全性需求和法规的驱动智能气囊及其零部件-传感器和引爆器数量增加-更高的系统性能•更小尺寸•性价比的压力•占位检测新技术尽快应用传统方案气囊预紧器侧面传感器安全带开关电源引爆器传感器MCU从总线分布式系统优点•在极其复杂的系统中减少线束•灵活性-一套方案适应多家制造商的要求•易于扩展-即插即用增加新功能•加速采用新的传感器技术•使供应商可以专注于可增值工程项目而不是相互连接的方案设计•开放的标准可以使其被快速和广泛的采用Slide10FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004Customers&Freescale-DrivingIndustryStandards客户&飞思卡尔–制定工业标准1995-96–飞思卡尔气囊系统小组设计了一种新结构，决心建立一种新的工业标准1997-99–飞思卡尔和TRW为实现这种标准开发了新的零部件1998-2000-被其他公司采用，并签约，制定了标准Others今天-大量的产品和系统被应用Slide11FreescaleSemiconductorGeneralBusinessInformation.Freescale™andtheFreescalelogoaretrademarksofFreescaleSemiconductor,Inc.Allotherproductorservicenamesarethepropertyoftheirrespectiveowners.©FreescaleSemiconductor,Inc.2004DSIAdvantagesDSI优点•灵活性-针对不同的平台容易配置•在高度复杂的系统中减少线束•电源由总线提供•在上百万的汽车安全气囊系统中已经被证明•开放式标准使其被快