A Design Method of Vehicle Network Topology

Abstract

The invention belongs to the technical field of vehicle network communication, and specifically relates to a design method of a vehicle network topology. The method includes the following steps: Step 1, analyzing the communication requirements of the vehicle network; Step 2, designing a platform-based vehicle network topology for selecting all electronic control system configurations; Step 3, designing each specific configuration for selecting part of the electronic control system configuration Vehicle network topology of the model. The present invention is a design method of the vehicle network topology, which introduces the design concept of flexible development of the vehicle network, so that each electronic control system can keep the hardware unchanged, and only need to make software when the vehicle is offline. Matching can meet the network communication needs of each specific vehicle model, solve the problem of network topology design when the number of vehicle electronic control systems is large, the variants are complex, and the options are different, which improves the compatibility of the vehicle network and reduces the number of various The type of components of the electronic control system, thereby reducing the unit cost, management cost and development cost of each component.

Description

technical field [0001] The invention belongs to the technical field of vehicle network communication, and specifically relates to a design method of a vehicle network topology. Background technique [0002] In the past, when selling vehicles, OEMs only had three configurations for users to choose from: high, medium, and low. Now, in order to better meet the actual needs of users, more and more OEMs have begun to adopt optional business methods, also known as It is personalized menu sales. The OEMs disclose some configurations and functions, allowing users to choose the configurations and functions they need and find useful according to their hobbies and economic capabilities, and then submit them to the OEMs, who then manufacture vehicles individually according to the needs of users. [0003] Personalized menu sales not only win users, but also bring challenges to vehicle network design. With people's pursuit of energy saving, safety, comfort, entertainment and convenience...

AI Technical Summary

Problems solved by technology

[0005] (1) The workload of network design is heavy, and there are many repetitive tasks

[0006] (2) The network topology of each model is incompatible, and the versatility is relatively poor

[0007] (3) Due to the incompatibility of the network topology, the subsequent network harness design and network test verification workload is heavy;

[0008] (4) When matching models with different electronic control system configurations, the software and hardware of each electronic control system are inconsistent, and the reusability is relatively poor;

[0009] (5) When matching models with different electronic control system configurations, each electronic control system uses different part numbers, which increases management costs and development costs exponentially

The vehicle network topology design for all electronic control system configurations is as follows: figure 1 As shown, ECU1 and ECU2 are standard configurations, and ECU3-ECU20 are optional configurations. When the number of electronic control systems selected by the user is N=0, there are only two electronic control systems ECU1 and ECU2 in the vehicle network, but since ECU1 It is not in the same network segment as ECU2. In order to realize the communication between ECU1 and ECU2, it is necessary to retain the electronic control systems ECU3 and ECU4. The cost of components of these two electronic control systems is additionally added to the vehicle cost. Therefore, for In the case of N=0, the cost performance of this network topology design scheme is low

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