Method for realizing pure electric car door window electronic control unit CANopen protocol
A technology of electronic control unit and pure electric car, applied in electrical components, data exchange through path configuration, transmission system, etc., can solve problems such as low communication efficiency, complicated definition of DeviceNet, unsuitable for vehicle network applications, etc., and achieve improvement Effects of Compatibility and Versatility
Inactive Publication Date: 2012-06-13
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology
The SAE J1939 protocol is mainly used in the heavy truck control system, and uses the CAN2.0 extension protocol to redefine the identifier for the communication requirements of the heavy truck system, but the data message contains the data type and format information, Communication efficiency is not high
DeviceNet uses the same object dictionary structure as CANopen, but the definition of DeviceNet is more complex and strict, with strict hierarchical definitions, and the cost of node development is higher
CANKingdom adopts a general modular design method so that various modules can be easily connected to the CANKingdom network, but its ID is dynamically allocated by the King node through an algorithm, and the same ID has no frame structure, which is not suitable for vehicle network applications
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[0013] The preferred embodiments of the present invention will be described in detail below in conjunction with the technical solutions and the accompanying drawings.
[0014] The invention discloses a method for realizing the CANopen protocol of a pure electric car door and window electronic control unit, comprising the following steps:
[0015] 1. The CAN bus communication scheme of the electronic control unit of the door and window of the pure electric car
[0016] The pure electric car door and window control system includes: central electronic control unit, left front door electronic control unit, right front door electronic control unit, left rear door electronic control unit and right rear door electronic control unit, and CAN bus is used for communication between them. The control objects of each electronic control unit mainly include: car windows and door locks, wherein the left front door electronic control unit and the right front door electronic control unit also r...
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The invention discloses a method for realizing a pure electric car door window electronic control unit CANopen protocol. The method comprises: (1) a CAN bus communication scheme of a pure electric car door window electronic control unit, (2) design of a pure electric car door window electronic control unit NMT message, (3) design of a pure electric car door window electronic control unit PDO message, (4) design of a pure electric car door window electronic control unit SDO message, and (5) design of a pure electric car door window electronic control unit object dictionary. The invention provides a CANopen application layer protocol design method of the pure electric car door window electronic control unit, compatibility and versatility of the electronic control unit are raised, good real-time performance of data transmission is obtained, and reliability of the data transmission is raised.
Description
technical field [0001] The invention belongs to the technical field of automotive electronics, and specifically relates to the design problem of the CANopen protocol of a door and window electronic control unit of a pure electric car. According to the requirements of the CANopen protocol, NMT, PDO and SDO messages of each electronic control unit are designed, and each electronic control unit is defined. A dictionary of objects for the unit. Background technique [0002] The pure electric car door and window control system is an important part of the in-vehicle network. It completes the electric control and local / remote control of the doors, windows, and rearview mirrors, reflecting people's concerns about the safety, comfort and convenience of the car. gender and many other requirements. At present, the door and window control system usually adopts the CAN bus technology, but since the CAN bus only defines the physical layer and the data link layer, the user must customize ...
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Login to View More IPC IPC(8): H04L29/06H04L12/40
Inventor 李鸿强孟永强刘芳舒
Owner TIANJIN POLYTECHNIC UNIV