1、Infineon TPMS solution英飞凌胎压监测系统解决方案刘山汽车安全系统市场经理英飞凌科技(中国)有限公司Sean.LiuITable of contents1 TPMS basics2 TPMS market3 Infineons TPMS products9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 2Table of contents1 TPMS basics2 TPMS market3 Infineons TPMS products9/1/2011 Copyright In
2、fineon Technologies 2011. All rights reserved. Page 3TPMS(Tire Pressure Monitoring System)9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 4“Detect the right pressure for your safety and your environment”Typical TPMS implementationTPMS modulein each wheelControl UnitDisplayRF
3、receiverCVreg Antennas(LF, RF)BUSReceiving Unit (TDA5230)9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 5TPMSValve with Mounted TPMS ModuleTPMS ModuleexteriorTPMS Moduleinternal partsValve9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 6Unidirection
4、al (low end/mid-end) TPMS Sensor modules send autonomously No synchronization between modules overlap in time possible Complex Tire localization9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 7Bidirectional (high-end) TPMS Sensor modules send after request from ECU (LF-Trigg
5、er) No overlap time Tire localization possible9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 8General requirements for TPMS Lifetime: 810 years Operating temperature: -40C to +125C Measurement of temperature pressure acceleration battery voltage RF Transmission LF communica
6、tion Small power-down currents9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 9Definition of an Indirect TPMSIndirect TPMS: based on ABS wheel speed sensor measurements Advantages: No extra hardware needed Algorithms have improved Disadvantages: not as exact as direct TPMS S
7、lower response No temperature measurement Influenced by road conditions9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 10Table of contents1 TPMS basics2 TPMS market3 Infineons TPMS products9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 11Set datePag
8、e 12Copyright InfineonTechnologies2010. All rightsThe TPMS market is driven by legislation regulated since 2005 100% penetration since 2007 new car platforms from Nov 2012 all new cars starting Nov 2014 Japan is expected to adapt EU legislation app. 1 year after EUregulation China: Recommended techn
9、ical standard is available. Korea: TPMS regulation is confirmed. Roll out from Jan 2013.USUSEUEUJapanJapanAPACAPACOnly direct TPMS can fulfill EU requirements. Todaysindirect TPMS systems are not suitable for EU EU TPMS regulation (start Nov 2012) has tighter requirements forTPMS systems than US reg
10、ulation Tier1 and OEM consider direct TPMS systems as mandatory to fulfillEU TPMS regulation Indirect systems will not fulfill EU TPMS requirementsRegion USARegulation FMVSS138Tires 1 or 4 tiresLearning time 20minDetection time 20minDetection threshold25% (ref. cold pressure)or minimum pressure+7kPa
11、Malfunction detection 20minStatus Phase in ended 9/2007for all vehicles 201340kph - v_max1st step 20% (ref. warm pressure)2nd step 15% (3 years later)or 150kPa+7kPaSources: Tier1, OEM, REGULATION (EC) No 661/2009 EU regulation passed No limitation on usedtechnology direct orindirect systems allowed
12、However, EU TPMSrequirements can only befulfilled by direct systemsCommentsComparison US and EU TPMS requirements9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 13GB/T 26149-20109/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 14Due to legislation the
13、 market doubles overthe next years0204060801001201401601802002010 2011 2012 2013 2014 2015 2016 2017 2018 2019Upside*JapanEU*USSource: csm, Strategy Analytics, internal knowledgeTotal Available Market for direct TPMS sensor ICs (mio. pieces)no aftermarket, no trucks The US market has nearly100% cove
14、rage of direct TPMS For EU (European Union) andJapan we assume 2/3 directsystems; the Japanese marketfollows the European marketwith a delay of 2 years Upside could be the Korean andthe Chinese market, but alsotrucks and after-sales (e.g.replacement, winter-tires)Comments9/1/2011 Copyright Infineon
15、Technologies 2011. All rights reserved. Page 15Table of contents1 TPMS basics2 TPMS market3 Infineons TPMS products9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 16Infineon is top player in the field of TPMS9/1/2011 Copyright Infineon Technologies 2011. All rights reserved.
16、 Page 17Infineon offers the right product for TPMS Infineon TPMS products are designed into car platforms of all majorcar makers Infineon is the leading supplier of integrated TPMS sensor solutions More than 7 years field experience with TPMS products Automotive certified production facilities Robus
17、t sensor technology to withstand harsh automotiveenvironments Broad product range to fit into every TPMS applicationInfineon has delivered more than 150 Million TPMS sensors9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 18Continuous improvement assures state-of-the-art func
18、tionality and builds up experiencesPAADCRFCMemory LFSP37PAADC RFCMemory LFSP30P RFADCSPI(A)CSP12(T)P RFStateMachineADCSP13/SP149/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 19Overview of SP37Integrated main features in a single chip solution:Integrated sensors: Pressure Se
19、nsor Acceleration Sensor Temperature Sensor Battery Voltage SensorLow power embedded microcontrollerWireless FSK- and ASK-Transmitter (RF)LF ReceiverAnalog-Digital ConverterPressure measurement range: 100 to 1300 kPaAdvanced power control featuresUltra low standby current (0.7A)Supply voltage range
20、1.9 to 3.6VOperating temperature range -40 to +125CDSOSP - 14 packageUp to 10 years lifetime(Estimates)9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 20SP37 Single Package TPMS Sensor Integrated Sensors: Pressure Acceleration Temperature Battery Voltage Integrated periphera
21、ls 8051 Microcontroller on board FLASH 3x GPIOs ADC for signal conditioning LF Receiver 315/433 MHz RF TransmitterSP37PADCASICALF InterfaceRF Transmitter8051 Core C6kB FLASH256B RAMTV12kB ROMTimerDig. PeripheralsSensor die9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 21Typ
22、ical PCB design of SP37 The single package solution basedon MEMS technology requiresvery few external components toform a completely functioningdevice suited for Tire PressureMonitoring SystemsTPMS ModuleSP379/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 22SP37 Development
23、Kit is available for design-ins Operating frequency of 315 MHz or 433.92 MHz Real time debugging USB interface for programming Digital I/O for further experiments / RS232Interface Output power of 8dBm CD with Windows drivers and documentation Sample code provided Download and debug code in FLASH via
24、 USB 50-ohm SMA output connector facilitates RFtesting SMA input connector /placeholders for antennafacilitates LF testing RS232 Interface allows easy input to PC RF testing and LF testing possible9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 23SP37 Development KitSP37 Dev
25、elopment Kit System Overview Features of the quick-start development kit Device operating at 315 MHz or 433.92 MHz Real time debugging USB interface for programming Digital I/O for further experiments / RS232 Interface9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 244 40PC
26、w. USB Interface WLCSIB Board SP37 Eval BoardSystem Cost Savings Rapid Development CycleEnergy EfficiencyBenefits for our customers Integration of TPMS sensor and RFtransmitter in a single package Integration of crystal pulling capacitor Small number of external componentsrequired for a complete TPM
27、S module Complete software development environment 6KB FLASH memory avoids the need tospend time for “crunching code” Commonly needed functions already includedin on-chip ROM library On-chip system controller manages powersavings modes Very low standby current for long battery life Powerful wakeup l
28、ogic (GPIO, LF signal, IntervalTimer)9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 25As TPMS sensor ICs are complex products, quality is animportant USP more than 150 m. pieces are shipped withcontinuously improved quality0123456782005 2006 2007 2008 2009 2010*Field0 kmSou
29、rce: IFX QualityTotal defects (mio. Pieces) A TPMS sensor IC incorporatesa pressure and accelerationsensor, a RF and LF unit as wellas some intelligence Furthermore the environmentalconditions inside a tire areextremely harsh High efforts in quality results inoutstanding quality of TPMSsensors Infineon is known for Infineon has a track recordof more the 150 millionTPMS sensor ICs shippedComments9/1/2011 Copyright Infineon Technologies 2011. All rights reserved. Page 26
