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Design and query method of CAN bus database

A CAN bus and query method technology, applied in the field of database systems, can solve the problems of inability to realize the machine reading and parsing functions of CAN-related data files, difficulty in ensuring automatic control of the CAN bus, difficulty in finding and modifying data, etc.

Inactive Publication Date: 2014-02-05
上海固泰科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] At present, there is no uniform standard for the CAN bus databases of major automobile manufacturers, and many of them are based on Excel spreadsheets or even Word documents to manage CAN-related data. The problems brought about by this are: 1. It is very difficult to find and modify the corresponding data; 2. It is impossible to realize the machine reading and parsing function of CAN-related data files, and it is difficult to guarantee the automatic control based on CAN bus

Method used

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  • Design and query method of CAN bus database
  • Design and query method of CAN bus database
  • Design and query method of CAN bus database

Examples

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Embodiment Construction

[0023] exist figure 1 , create a CAN bus database file (104), which contains a signal table (101), a message table (102) and a node table (103).

[0024] exist figure 2 In the signal table (101), any number of independent signals (201)-(207) can be defined.

[0025] exist image 3 Among them, any number of independent messages (301)-(302) can be defined in the message table (102), and each message contains the independent signal loaded in it, for example, the independent message (301) is loaded with the independent signal (201 )-(203); Independent message (302) is loaded with independent signal (204)-(205).

[0026] exist Figure 4 Among them, any number of independent nodes (401)-(402) can be defined in the node table (103), and each node contains a list of messages sent by it. For example, an independent node (401) sends an independent message (301) and an independent message (302); independent node (402) does not contain sending message.

[0027] exist Figure 4 , e...

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Abstract

The invention relates to a design and query method of a CAN bus database. The design of the CAN bus database is composed of three data tables, namely a signal table, a message table and a node table. The signal table includes all signal definitions in a network. The message table includes all message definitions in the network. Each message contains a signal which can be found in the signal table. The node table includes all node definitions in the network. Each node contains a message which is sent by the node and which can be found in the message table, and meanwhile, each node contains a signal which is received by the node and which can be found in the signal table.

Description

technical field [0001] The invention relates to a software system in the computer field, in particular to a database system based on CAN bus. Background technique [0002] As the communication interface between various microcontrollers, the CAN bus is widely used in automobiles and industries; in the process of formulating and implementing the CAN bus protocol for automobiles, it is necessary to encapsulate the signals, messages and nodes defined in the CAN network into a In the database file, symbol-based data access is realized, thereby simplifying the workflow and building a foundation for CAN bus monitoring, simulation and testing. [0003] At present, there is no uniform standard for the CAN bus database of major automobile manufacturers, and many of them are based on Excel spreadsheets or even Word documents to manage CAN-related data. The problems brought about by this are: 1. It is very difficult to find and modify the corresponding data; 2. The machine reading and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G06F13/38
CPCG05B19/4185G05B2219/31166
Inventor 刘矗莫莽吴宝红
Owner 上海固泰科技有限公司
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