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DBC signal start bit format conversion method and system

A format conversion and signal format technology, applied in the field of DBC signal start bit format conversion method and system, can solve the problem that the text format definition start bit is different from the file start bit, etc.

Pending Publication Date: 2022-07-01
ZHIJI AUTOMOTIVE TECH CO LTD
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Problems solved by technology

[0003] For the above defects or improvement needs of the prior art, the present invention provides a DBC signal start bit format conversion method and system, which can effectively solve the problem of text format definition start bit and The problem that the start bit of the file is different, and the correct DBC file is generated

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  • DBC signal start bit format conversion method and system
  • DBC signal start bit format conversion method and system
  • DBC signal start bit format conversion method and system

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Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0032] Whether it is Motorola format or Intel format, the start bit of a DBC file opened in CANDB++ is the lowest signal bit (LSB), such as figure 1 and figure 2 As shown, both the Intel format and the Motorola format are signals with a start bit of 30 and a signal length of 24Bit. In the text fo...

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Abstract

The invention discloses a DBC signal start bit format conversion method and system. The method comprises the following steps: defining a written text format specification; extracting data information in the Excel file to obtain a start bit, a byte length and a byte sequence; judging a signal format corresponding to the byte sequence; when the byte sequence is in an Intel format, according to a defined writing text format specification, filling a lowest signal bit (LSB) into a text format; and when the byte sequence is in a Motora format, further judging whether the lowest signal bit LSB and the highest signal bit MSB of the signal are in the same byte, calculating the highest signal bit MSB, and filling the highest signal bit MSB into the text format according to the definition writing text format specification. According to the method, the problem that the start bit of the text format definition is different from the start bit of the file when the Motora format signal is converted by the existing DBC conversion tool can be effectively solved, and the correct DBC file is generated.

Description

technical field [0001] The invention belongs to the technical field of automobile database development, and more particularly, relates to a method and a system for converting the start bit format of a DBC signal. Background technique [0002] The DBC file is a file that describes the data communication between CAN network nodes. The .dbc file is a file in ASCII format, and its .dbc extension can be used to define the CAN network. In the process of automobile network development, the DBC database is inseparable. With the development of automobile technology, the number of ECU nodes and messages on the automobile is increasing. Manual editing of DBC files not only consumes a lot of time for engineers, but also is prone to errors. In order to solve this problem, there are many tools for converting DBC, some use Excel VBA, some use Python. However, these conversion tools will face the problem that the start bit of the Motorola format signal is different from that in CANDB++ dur...

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Application Information

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IPC IPC(8): G06F16/11
CPCG06F16/116
Inventor 殷婷婷
Owner ZHIJI AUTOMOTIVE TECH CO LTD
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