A Vehicle Network Evaluation Method Based on Data Fusion

Abstract

The invention discloses a data fusion based vehicle-mounted network evaluation method. The data fusion based vehicle-mounted network evaluation method comprises the steps of extracting a vehicle-mounted network topological structure and a vehicle-mounted network database respectively by aiming at an preliminarily designed vehicle-mounted network scheme; analyzing and calculating each data characteristic path length of the vehicle-mounted network based on the extracted vehicle-mounted network topology so as to obtain a vehicle network topology evaluation result; obtaining an analysis result of extendibility of vehicle-mounted network static data and extendibility of vehicle-mounted network dynamic data based on the vehicle-mounted network database; fusing the obtained vehicle-mounted network topology evaluation result, the vehicle-mounted network static data extendibility analysis result and the vehicle-mounted network dynamic data extendibility analysis result by adopting a data fusion method; and carrying out comprehensive evaluation for the vehicle-mounted network based on the fusion result. The data fusion based vehicle-mounted network evaluation method realizes comprehensive evaluation on the whole vehicle-mounted network by effectively fusing the network topology characteristic path length, the bus load rate and the data delay extendibility and improves the comprehensiveness and universality of the vehicle-mounted network evaluation method.

Description

technical field [0001] The invention belongs to the technical field of vehicle communication networks, and in particular relates to a method for evaluating a vehicle network based on data fusion. Background technique [0002] The demand for safety, energy saving, environmental protection, and car intelligence has promoted the development of car network technology, and the corresponding car network simulation and evaluation system has also become a concern of various research departments and manufacturers. [0003] CAN bus technology has become one of the most mature vehicle network standards and is widely used in modern vehicle control. However, due to the complexity of the vehicle application environment, the real-time performance, fault tolerance, reliability and bandwidth resource utilization of the CAN bus vehicle network The capacity has not yet met the actual requirements and development needs. Therefore, in addition to solving the problem of strong electromagnetic in...

AI Technical Summary

Problems solved by technology

[0008] (2) Most studies only analyze the flexibility of network expansion from the perspective of single-signal framing or combined framing, while commercial vehicles are mostly designed in accordance with the SAE J1939 standard, and the data framing method is fixed, so the framing method cannot reflect the flexibility of all network expansion , there is a lack of analytical research applicable to the scalability of all vehicle networks, and scalability is an important factor that manufacturers need to consider when designing platform networks

[0009] (3) The traditional vehicle network evaluation method usually only compares one performance, or compares multiple performance indicators one by one, without considering the comprehensive evaluation of multiple network performance indicators and how to express them in a quantitative form

Images