Vehicle data file generation method and device

Abstract

The invention discloses a vehicle data file generation method and device, and the method comprises the steps: obtaining a bus matrix and a signal demand table under a set path; reading and analyzing data cells in the bus matrix and the signal demand table one by one to generate an RX table; sorting the RX tables line by line, arranging the signal names under the same message name, grouping according to the Motorola format LSB matrix format and the acquisition frequency, and polling and filling each signal with 64-bit data frames by adopting a greedy algorithm to generate a TX table; accordingto the signal value description attribute of the TX table, setting a type judgment rule to add mode schema information of a signal, and generating a communication matrix in combination with the RX table, the TX table and the schema information; and reading the communication matrix line by line through a DBC conversion program to generate a DBC file. According to the invention, the manpower and time costs of engineers for manufacturing communication matrixes and DBCs are reduced, and great convenience is provided for signal acquisition of automobile big data and subsequent data analysis.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles, in particular to a method and device for generating vehicle data files. Background technique [0002] With the development of the Internet of Vehicles and the increasingly mature application of big data technology, big data as a strategic asset has been increasingly valued by various car companies. Cars are mainly configured with T-BOX (Telematics BOX) for big data collection. The collection work needs to follow a specific protocol to create a big data communication matrix, and define the format of big data collection of ECU signals of each model. The communication matrix of each model is different. If the communication matrix and DBC file are manually made for each model (the DBC file is a file describing the data communication between CAN network nodes, and the .dbc file is an ASCII format file. The .dbc extension can be used to define the CAN network), which takes a long time to...

AI Technical Summary

Problems solved by technology

The communication matrix of each model is different. If the communication matrix and DBC file are manually made for each model (the DBC file is a file describing the data communication between CAN network nodes, and the .dbc file is an ASCII format file. The .dbc extension can be used to define the CAN network), long compilation time, high replacement cost, and weak maintainability

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