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A method for adaptively collecting ECU messages using database files

A database and self-adaptive technology, applied in the direction of electrical digital data processing, special data processing applications, electrical components, etc., can solve the problem of CAN-bus message data transmission flow, and achieve the goal of reducing communication flow and reducing redundant data Effect

Active Publication Date: 2018-01-23
XIAMEN YAXON NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This technology is to solve the problem of real-time transmission of CAN-bus message data from the vehicle-mounted terminal to the remote center, and to free the vehicle-mounted terminal from the dilemma of processing complex DBC files

Method used

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  • A method for adaptively collecting ECU messages using database files
  • A method for adaptively collecting ECU messages using database files
  • A method for adaptively collecting ECU messages using database files

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Experimental program
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Embodiment Construction

[0017] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0018] As a specific example, as figure 1 As shown, the hardware system implementing the method of the present invention includes a remote center system and a vehicle-mounted terminal, the remote center system and the vehicle-mounted terminal communicate through a 3G network or a GSM network, and a method for adaptively collecting ECU messages by applying a database file of the present invention , including the following steps:

[0019] Step 1: The remote center system imports the data description file used to describe the communication information of each ECU in the CAN bus network;

[0020] The specific format of the database description file is shown in Table 1 below:

[0021] key field

describe object

BU_

Network Node

BO_

Message

SG_

Signal

EV_

Environment Variable

[0022] Table ...

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Abstract

The present invention relates to the technical field of automotive electronics composed of multiple electronic control units (ECU for short), in particular to a method for adaptively collecting ECU messages using database files, and a message system for dynamically collecting ECU messages using DBC files provided by CAN bus , the remote service center converts the DBC file into a message collection control table that is easily recognized by the vehicle terminal, so that the vehicle terminal can quickly and selectively collect the signal values ​​in the ECU message required by the actual application, thereby reducing redundant ECU messages The data is uploaded to the central system. This technology is particularly prominent in the application of real-time collection of driving habit signal data of car drivers. It can greatly reduce the communication traffic without compressing the signal data, and provide customizable and dynamically expandable signal collection for the operation platform. The solution solves the dilemma of parsing complex DBC files for vehicle-mounted terminals.

Description

technical field [0001] The invention relates to a method for adaptively collecting ECU messages by applying database files. Background technique [0002] At present, the automobile industry is developing rapidly. In order to realize diversified vehicle intelligent systems, dozens of electronic control units (ECUs) are often connected to the CAN-bus, and the signal data provided by each ECU can reach up to 2 64 species, but the current bottleneck in smart car technology has resulted in many pre-defined signals being placeholders. After these ECUs are connected to the CAN-bus, they will broadcast 8 bytes of message data periodically to the bus. In order to reflect the intelligence of the in-vehicle terminal and reduce the processing burden of the in-vehicle system, the current in-vehicle terminals in the industry collect ECU message data transmitted on the CAN-bus without distinguishing the ECU type and signal type, and usually passively receive all CAN-bus messages. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08G06F17/30
Inventor 江永聪何应祥彭振文李志渊
Owner XIAMEN YAXON NETWORKS CO LTD