Design method of full vehicle network topology

Abstract

The invention belongs to the technical field of vehicle network communication, and specifically relates to a design method of full vehicle network topology. The method comprises the following steps: step 1, analyzing the communication requirements of the entire vehicle network; step 2, designing platform-based full vehicle network topology that selects all electronic control system configurations;and step 3, designing full vehicle network topology of specific vehicle models that select a part of electronic control system configurations. According to the design method of full vehicle network topology, the design concept of flexible development of a full vehicle network is imported, so that only software matching needs to be performed on the electronic control systems when the full vehicleis removed from the production line while keeping the hardware unchanged, and the network communication requirements of the specific vehicle models can be met, the problem of network topology design when the number of the electronic control systems is large, the variation is complex and the option difference is large is solved, the compatibility of the full vehicle network is improved, and the categories of the components and parts of the electronic control systems are reduced, therefore the individual costs, the management costs and the development costs of the components and parts are reduced.

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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