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摘要为了解决城市客车的能耗与排放，近年来混合动力车技术水平取得了长足的进步。 混合动力汽车采用两个动力源，结构复杂，车上大量采用电子控制系统，这些复杂的系统控制需要检测及交换大量数据，传统的连接方式不但烦琐、昂贵，而且可靠性差、文护成本高，无法满足车辆通信的要求。本文课题研究的IE是混合动力客车的电子设备之间的通信系统。36831
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针对车上大量电子设备的应用所产生的诸多问题，BOSCH公司开发了CAN总线标准。CAN总线己成为目前国际上应用最广泛的现场总线之一，其总线规范也已被ISO国际标准组织制定为国际标准。
CAN协议是建立在国际标准组织的开放系统互连模型基础上的，其模型结构有3层，只取了OSI底层的物理层、数据链路层和应用层。不过，CAN协议只详细定义了物理层和数据链路层，对应用层却没有定义。因此，产生了许多知名的应用层协议，如DeviceNet、CANopen、J1939/ISO11783等。美国工程师协会（SAE)针对载货车和大客车制定了SAEJ1939协议，但是针对混合动力汽车却没有统一的CAN应用层协议。
本文阐述了CAN总线通信协议的特点，比较详细的介绍了适用于货车和客车的SAEJ1939通信协议。针对缺乏混合动力客车总线协议的情况，参照ji939协议开发了混合动力客车通信系统的应用层协议，并在此基础上用CANoe系统进行了CAN总线的仿真实验，通过实验验证了本协议的可行性。
毕业论文关键字：车辆；CAN总线；SAEJ1939;混合动力汽车；CANoe系统
Abstract
Recent years, in order to solve the problem of the expend of energe sources and releasing of the bus in city,the technology level of the HEV have a great improvement.Hybrid Electric Vehicle(HEV) has two sources of power,so the structure of it is very complex. A great deal of electronic euipments were adopted in HEV to observe and share many informations. For the reasons of fussy, expencive of price,low reliability and costliness of maintenance,the traditional connection can not satisfy the request of vehicle connection. What this paper works over is comunication system among each HEV's Ecus.
To solve the problem which the electric equipmens brings, BOSCH corporation explored CANbus(Controller Area Net).At presentjCANbus has already been one of the Fieldbuses which is applied most widely in worId,Its specification has been set down the international standard by ISO(International Organization for Standardizatoin).
CAN protocol is based on ISO's OSI, but its model structure only has three layers, which are physical layer, data link layer and application layer. As CANbus defined physical layer and data link layer excepting application layer, many famous higher layer protocols have appeared, such as DeviceNET, CANopen, J1939/ISO 11783 and so on. Thereinto, SAE(Society of Automotive Engineers) has set down J1939/11783 applying for truck and bus. At the same time, there was no uniform CAN higher layer protocol applying for HEV by now.
This paper describes the application of the CANbus and the J1939 protocol which used in truck and bus communication. As the shortage of protocol for HEV, we defined an application layer protocol of HEV according to the J1939 protocol. And we also made a simulation experiment for CANbus using CANoe system. The experiment proved the workability of the protocol.
Keywords：HEV，CANline ，SAEJ1939， CANoe system
目录
1. 绪论 3
1.1引言 3
1.2课题概述 3
1.2.1混合动力汽车 4
1.2.2汽车网络 4
1.3课题研究意义及主要任务 7
1.3.1课题意义 7
1.3.2本课题的主要任务： 8
2. CAN总线 9
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