CAN (Controller Area Network) and LIN (Local Interconnect Network) bus network based vehicle control system

A technology of CAN bus and automobile control, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of poor expandability, etc., and achieve enhanced expandability, coordinated and orderly network work, and improved timeliness Effect

Inactive Publication Date: 2012-02-08
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The network used by the control system of the current car is tailor-made for the car itself, so the scalability

Method used

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  • CAN (Controller Area Network) and LIN (Local Interconnect Network) bus network based vehicle control system
  • CAN (Controller Area Network) and LIN (Local Interconnect Network) bus network based vehicle control system
  • CAN (Controller Area Network) and LIN (Local Interconnect Network) bus network based vehicle control system

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Experimental program
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Embodiment Construction

[0026] Taking an SUV model developed by the applicant as an example,

[0027] (1) Vehicle network topology diagram

[0028] figure 1 Shown is the vehicle network topology. The vehicle's electronic configuration is complex, with a large number of electronic control units and a large number of messages. According to the previous development experience, the load rate of one high-speed CAN bus is less than 30%. Through node simulation, the current load rate has exceeded 30%. For the stability of the network, two high-speed CANs (power high-speed CAN hereinafter referred to as power High Speed ​​CAN1 and body high-speed CAN hereinafter referred to as body HighSpeed ​​CAN2) are used. Among them: the load rate of power High Speed ​​CAN1 is 26.8%, and the load rate of body High Speed ​​CAN2 is 5.7%. For the LIN nodes with low communication rate and low real-time performance on the body, two LINs (the first LIN and the first LIN) are designed. The second LIN is called LIN1 and LIN2 ...

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Abstract

The invention discloses a CAN (Controller Area Network) and LIN (Local Interconnect Network) bus network based vehicle control system which comprises a local area network connecting all electric control units in the vehicle control system, wherein all the electric control units communicate with one another through the local area network. The local area network comprises a power high-speed CAN, a vehicle body high-speed CAN, a first LIN and a second LIN. In the invention, A double-high-speed CAN and two-LIN topological structure is adopted, and reasonable nodes with terminal resistors are used, therefore the expansibility of the whole network is strengthened; timeliness of the network is improved through the definition of ID, cycle and the like; the wakeup from sleep of the whole network is ensured through the application of complicated network management, therefore the effect of coordinative and orderly network operation can be achieved.

Description

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Claims

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Application Information

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Owner CHERY AUTOMOBILE CO LTD
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