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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2020年5月29日星期五,#,20 十一月 2024,汽车无源MEMS式TPMS系统,Regulation/Legislation,TREAD Act(US),Safety,Proper Tire Inflation can,reduce blowouts,mitigate hydroplaning,reduce braking distance and improve handling,Cost Saving,Proper Tire Inflation can,Increase tire life,Improve gas mileage,Why Need for Tire Pressure Monitoring?,Types of Tire Pressure Monitoring Systems,Direct,Directly measure the tire temperature and pressure via a sensor that is installed on the wheel.,Indirect,The most commonly used indirect system utilizes anti-lock braking systems(ABS)to measure the difference in the rotational speed of the four wheels.A wheel that is rotating faster than the others infers that wheel has lower pressure than the other wheels.,Auto-Location,Auto-location is the ability of the TPM system to automatically determine the location of each active sensor.Enhanced,direct TPM systems are able to auto-locate and to inform the driver which tire is under inflated.,Tire Pressure Sensor,ECU+Autolearn hardware,(2)Radio Frequency Detector(RFD)Sensors,Display Unit,Directly measures pressure in tire and transmits via RF to a receiver,Tire Pressure Monitoring System Components,Tire Pressure Sensor,Beru,Schrader,Pacific,Material Cost Breakdown,Sensor,99%of direct TPM Systems currently use,MEMS,pressure sensors.,Major Suppliers,Major Suppliers Market Share,Chinese Suppliers,Chinese Suppliers,Market Opportunity,CAGR of 2%in the next 5 years,If nothing changes in European or Asian legislation,If the European legislation makes TPMS mandatory,driven by rising concerns on CO,2,emissions,the market would go over,$300 M by 2012(CAGR of 13%in the next 5 years).,TPMS market is a market driven by regulations/legislations,TPMS is mandatory on all new cars sold in US since Sept.1,2007.,In Europe and Asia,the market penetration is slow and not supported yet by any regulation.,The potential success in imposing TPMS in Europe and/or Asia will create a new rally of high speed market growth,plus current technical challenges,a large number of players still actively develop new systems in order to get a share of the market.,What is Next in the TPMS Market?,Progress in indirect measurement systems,Moving the sensor from the valve to the tire inlay,Energy harvesting devices technologies and integration,Each will have very strong impact on the market and would mean a market shift.,One of impacts is on Price huge price pressure(price keeps getting lower),From Technical Level:,Legislation change in Europe for reducing CO,2,emissions,Many newcomers coming into the market,From Market Level:,a CAGR of 2%till 2012 in revenue corresponding to an increase of 12%in volume.,Power Consumption,7 to 10 year operational lifetime for a direct TPM module,Each component must have a very low-current standby or idle mode,Efficient measurement and transmission hardware,Control algorithm should limit measurements and transmissions to as infrequently as possible,Size and Weight,A heavy,bulky battery is simply not an option,Usually the entire module(including the electronics,PCB,housing,and mounting hardware)needs to be below 30 to 40 grams to avoid an out-of-balance tire,Environment,Inside the tire is a very harsh environment on electronic products and silicon pressure sensors exposed to air,Temperature ranging from-40 to+125C,Moisture,Tire mounting grease,Other potentially corrosive materials.,Media protection and thermal characteristics are vital to a products survival.Careful package design is,necessary to allow a broad temperature range and robust media compatibility.,Cost,Smaller,more highly integrated components to reduce board space can present significant savings,Integrating the functionality of the TPMS and the remote keyless entry(RKE)receiver can help to reduce the overall system cost,Design Challenges,TPMS-Tire Pressure Monitoring Systems Market,Published by Yole Development,October 2007,2423.46(about,￥,37,000 RMB),Available Market/Technical Information,China TPMS Industry Report,2005-2006,Published by ResearchandMarkets,February 2006,EUR 1,151.00(Hard Copy),EUR 1,239.00(Electronic),Thank You!,This technology combines microelectronics with tiny mechanical systems such as valves,gears,and any other mechanical systems all on one semiconductor chip using nanotechnology to measure pressure.,Microelectromechanical systems(MEMS),
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