采用 Flex ray 总线通信的柴油机缸压采集系统
채용 Flex ray 총선통신적시유궤항압채집계통
In-cylinder Pressure Acquisition System of Diesel Engine Based on Flexray Bus
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    车用发动机 차용발동궤

    2014年 3期 1-5 ,共5页

    程驰%李建秋%方成%高国景%杨福源

    정치%리건추%방성%고국경%양복원

    气缸压力%数据采集%Flex ray总线%双缓存机制%离线分析 氣缸壓力%數據採集%Flex ray總線%雙緩存機製%離線分析
    기항압력%수거채집%Flex ray총선%쌍완존궤제%리선분석
    in-cylinder pressure%data acquisition%Flexray bus%dual-buffer mechanism%offline analysis
    开发了采用Flexray总线通信的低成本缸压采集系统：基于M PC5644A单片机设计了缸压实时采集系统的硬件模块；针对缸压数据大流量的特点，对Flex ray总线进行了优化设计，并通过软件实现了双缓存机制，保证缸压数据能够实时传输；通过CANoe把Flexray总线上的缸压数据进行实时储存，并利用Matlab对缸压数据进行离线分析。在1台4缸中型高压共轨柴油机上的试验表明：该采集系统能够实时采集缸压数据，能够通过 Flex ray总线把所有缸压数据传输到上位机并储存到ASC文件中，利用储存的数据能够离线进行相关的燃烧分析。
    개발료채용Flexray총선통신적저성본항압채집계통：기우M PC5644A단편궤설계료항압실시채집계통적경건모괴；침대항압수거대류량적특점，대Flex ray총선진행료우화설계，병통과연건실현료쌍완존궤제，보증항압수거능구실시전수；통과CANoe파Flexray총선상적항압수거진행실시저존，병이용Matlab대항압수거진행리선분석。재1태4항중형고압공궤시유궤상적시험표명：해채집계통능구실시채집항압수거，능구통과 Flex ray총선파소유항압수거전수도상위궤병저존도ASC문건중，이용저존적수거능구리선진행상관적연소분석。
    The in-cylinder pressure real-time acquisition system with low cost was developed with Flexray bus and the hard-ware module of the system was designed with MPC5644A single chip microcomputer .For the large data flow of in-cylinder pressure ,the Flexray bus was optimized and the dual-buffer was realized by the software to guarantee the real-time transmis-sion of in-cylinder pressure data .The in-cylinder data in Flexray bus was saved in real time by CANoe and its offline analysis was carried out with Matlab tool .On a 4-cylinder high-pressure common rail diesel engine ,the acquisition system was verified . The results show that the system can collect the in-cylinder pressure data ,transmit them to upper computer and save them in ASC file .With the saved data ,the offline combustion analysis can be carried out .
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