TPMS发展现状及发展趋势分析

汽车高速行驶时,如果轮胎压力异常会造成爆胎,造成重大交通事故,因此实时监测轮胎气压可提高车辆的行驶安全性.汽丰轮胎压力监测系统(TPMS)的主要作用就是在汽车行驶时,对轮胎气压进行实时自动监测,对轮胎漏气和低气压进行报警,是驾车者、乘车人的生命安全保障预警系统.本文主要介绍TPMS的发展现状、功用及发展趋势,提出TPMS的发展是一个永恒的主题.     

浅谈汽车轮胎压力监测系统(TPMS)

TPMS(轮胎压力监测系统)的作用是在汽车行驶过程中对轮胎气压进行实时自动监测,并对轮胎漏气和低气压进行报警,以确保行车安全。本文对目前世界上先进的汽车轮胎压力监测系统功能作了简要的介绍,重点介绍了汽车轮胎压力监测系统的分类、特点以及使用注意事项。     

汽车胎压及温度检测系统TPMS设计

汽车胎压监视系统（TPMS）主要用于在汽车行驶时实时地对轮胎气压进行自动监测,是驾车者和乘车人员的生命安全保障预警系统。未来几年中,轮胎压力监控TPMS作为主动性安全产品有望成为汽车电子系统中增长最快的领域之一。本文将介绍目前技术较成熟的直接胎压监测系统TPMS的组成以及在TPMS硬件设计、组件选择、功耗管理、软件设计等环节要考虑的因素。     

多传感器信息融合及在轮胎压力监测系统中的应用

轮胎是汽车的的重要安全部件,为了提高轮胎压力监测系统的精度,提高报警的准确性,减少误报漏报,为安全行驶保驾护航;本文主要介绍了传感器技术和多传感器信息融合基本理论以及多传感器信息融合技术在TPMS中的应用,建立基于多传感器信息融合的TPMS模型,并对两种TPMS融合方案设计进行了分析研究。     

浅谈当前主流TPMS

本文主要介绍TPMS,随着科技的不断,发展汽车也走进了人们的生活,但是应运而生的汽车安全问题也随之产生。TPMS(Tire Pressure Monitoring System)即汽车轮胎随动压力监测系统,该系统通过对汽车轮胎的压力、温度等进行动态实时自动监测,并在监测到轮胎状况异常时进行报警、甚至预警,从而有效预防爆胎,以保障驾乘者的行车安全。     

用加速度传感器控制TPMS定位发射的方法

为了减少发射模块和接收模块之间射频信号衰耗,根据汽车轮胎温度压力监测系统TPMS(tire pressuremon itoring system)的特点,提出了用加速度传感器控制发射模块定位发射的"TPMS".首先介绍了利用加速度传感器估算车速和定位TPMS发射模块轮胎转动位置的原理,然后给出了MCU编程实现车速估算和发射模块定位的方法.引入定位发射传感信号的方法后,有效地克服了轮胎钢网和轮毂等金属构件对发射模块发射传感信号的影响,使TPMS的误码率性能获得极大的改善.该方法具有良好的可操作性,可用于大型客车、货车上.     

基于轮速传感器脉冲信号的轮胎压力监测系统

汽车高速行驶时,爆胎是引起恶性交通事故的主要原因之一.轮胎在非正常气压下,尤其是低气压下长时间高速行驶是造成爆胎的最主要内因.安装轮胎压力监测系统(TPMS)能有效地防止轮胎在气压异常下长时间行驶,提高汽车的主动安全性.本文提出了一种新的基于轮速传感器脉冲信号的轮胎压力监测系统,在简述监测系统的结构、组成及工作原理的基础上,进行系统的硬件及软件设计,实现了对轮胎气压的实时监测,在胎压异常时发出报警信号,有效地保障了行车安全.     

直接式汽车轮胎压力监测系统设计

针对直接式汽车轮胎压力监测系统(Tire Pressure Monitoring System ,TPMS)存在的关键技术问题,设计了基于SP12传感器、无线发射芯片TDK5100F的直接式汽车轮胎压力监测系统.系统由4个轮胎检测模块、1个中央接收模块以及1个显示模块组成.轮胎检测模块采用气门嘴外置式安装方式,通过轮胎检测模块连接到显示模块上进行设置来实现轮胎检测模块的定位.系统安装方便,便于更换电池,且成本较低,可以作为独立的装置安装在汽车上,还可通过车载网络接口和其它模块通信.     

三体式轮胎压力监测系统设计及实现

由于射频发射距离的限制,当两体式轮胎压力监测系统(TirePressureMonitoringSystem,简称TPMS)被安装在客车、载货汽车等车身较长的汽车上时,系统运行会不稳定。本文介绍了三体式轮胎压力检测系统的硬件组成及软件设计方法。阐述了基于GENPX传感器的轮胎检测模块设计方案和基于摩托罗拉33594接收机的接收模块的设计方案。并给出了模块硬件电路以及相关程序框图和通信协议。     

基于MPXY8300的汽车胎压监测系统设计

针对汽车轮胎压力监测系统(TPMS)中轮胎模块的高可靠、高集成度要求,设计了基于MPXY8300的轮胎模块。分析了由该芯片构成的TPMS系统结构,并对各个模块进行了详细的电路设计,最后阐述了系统设计中需要注意的问题。结果表明:基于MPXY8300的TPMS系统结构紧凑,体积小,功耗低,可靠性高,有效降低了系统成本。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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