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Automobile network communication system forward design method

A technology of communication system and design method, which is applied in the direction of transmission system, digital transmission system, data exchange network, etc., can solve the problems of little theoretical support and insufficient platform reusability, so as to reduce test verification and rectification work, The effect of shortening the development cycle and reducing the workload

Active Publication Date: 2016-07-20
CHERY AUTOMOBILE CO LTD
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AI Technical Summary

Problems solved by technology

The traditional network design method is designed in the early stage, tested and rectified in the later stage, the protocol has the disadvantages of continuous update, and the reusability of the platform is not good enough. The design is mainly based on experience, and there is little theoretical support.

Method used

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  • Automobile network communication system forward design method
  • Automobile network communication system forward design method
  • Automobile network communication system forward design method

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Embodiment Construction

[0033] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0034] In a preferred embodiment, the method mainly includes the following parts: network communication forward design process, signal time model, time parameter requirements, simulation result analysis, specifically as follows:

[0035] Network communication forward design process

[0036] figure 1 The forward design process of signal-based network communication is explained: first, the OEM needs to define the topology of the entire network (how many CAN networks, speed, how many CAN nodes, etc.) and the receiving and sending relationship of all signals. Secondly, it is necessary to use the timing analysis platform for automatic design, which mainly includes the design of the gateway, the packetization of the signal, and the distribution of the message ID, period, and byte length after...

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Abstract

The invention relates to an automobile network communication system forward design method, which designs a network communication protocol according to a signal maximum function time requirement, ensures real-time performance of network communication, calculate delay time and remaining time of a message, ensures the reliability of network communication, and comprises the steps of: establishing a network communication structure; conducting automated design by means of a time sequence analysis platform; and carrying out time sequence analysis according to an automated design result. By adopting the forward design method, a network is subjected to time sequence analysis at the beginning of design, the accuracy of design is increased, and workload of subsequent tests can be reduced. At a project design stage, the reliability of network communication protocol design is verified through a time sequence analysis and simulation method; and at a test verification stage, test verification and rectification work is reduced, and the development cycle is shortened.

Description

technical field [0001] The invention relates to the field of automotive electronic communication control, in particular to a forward design method of an automotive network communication system. Background technique [0002] With the increase of vehicle electronic control modules and the complexity of functions, vehicle CAN network has become the first choice of automotive electrical engineers, and has been widely used by major car manufacturers. Automotive CAN networking can not only reduce the quality of the vehicle, but also ensure the timely and accurate transmission of interactive information between various control modules, thereby improving the safety and comfort of the vehicle. For OEMs, how to design the CAN network is the key to the networking of the entire vehicle. In the traditional development mode, the OEM determines the hardware specification, signal list and other information after discussion with the electrical engineer and the supplier according to the func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/08
Inventor 李艳玲
Owner CHERY AUTOMOBILE CO LTD
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