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Device and method for calibrating electronic control units of automobiles on basis of CCP [CAN (controller area network) calibration protocol]

A technology of automotive electronics and control units, applied in the direction of electrical testing/monitoring, etc., can solve the problems of small programming and high cost, and achieve the effect of reducing costs, development and calibration costs

Active Publication Date: 2014-12-17
GUANGZHOU AUTOMOBILE GROUP CO LTD
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Problems solved by technology

The advantage of this method is that the amount of programming is small and is suitable for automatically generated code based on the model, but the inventors have found that this method also has shortcomings: it depends on the support of single-chip microcomputers, but at this stage there are only a few single-chip microcomputers that can realize this. an extended function; in addition, the cost of this implementation is high

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  • Device and method for calibrating electronic control units of automobiles on basis of CCP [CAN (controller area network) calibration protocol]
  • Device and method for calibrating electronic control units of automobiles on basis of CCP [CAN (controller area network) calibration protocol]

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0040] Such as figure 1 As shown, a calibration device for a CCP-based automotive electronic control unit in an implementation of the present invention is shown. It can be seen from the figure that the calibration device 1 includes:

[0041] The first memory 12, which is a non-volatile memory, is a flash memory (FLASH) in this embodiment, and it stores an S19 file, which is referred to as the current S19 file hereinafter. In the current S1...

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Abstract

The invention provides a method for calibrating electronic control units of automobiles on the basis of a CCP [CAN (controller area network) calibration protocol]. The method includes reading current S19 files in first memories and explicitly writing mapping addresses and initial values of various implicitly stored calibration parameters into a second S19 files; parsing the second S19 files, acquiring the mapping addresses and the initial values of the various calibration parameters, calibrating the to-be-calibrated electronic control units of the automobiles in an online manner after calibration commands are received, and acquiring calibration parameter values which are calibrated in the online manner; replacing the initial values of the various calibration parameters in the current S19 files in the first memories by the various calibration parameter values which are calibrated in the online manner. The method has the advantages that the complexity of a system for calibrating the ECU (electronic control units) of the automobiles can be reduced, and the production cost and the labor cost can be lowered.

Description

Technical field [0001] The present invention relates to the technical field of automotive electronic control, in particular to a calibration device and method for automotive electronic control units based on the CCP protocol (CAN Calibration Protocol, CAN bus calibration protocol). Background technique [0002] In the process of automobile design and manufacturing, calibration steps are often required. The calibration mentioned here refers to the performance requirements of the entire vehicle: such as power, economy and emissions, etc., with the goal of achieving the best control and economy, and the electronic control unit (ECU) ) Operation and parameter adjustment and optimization process. The CAN bus calibration protocol (CCP) is based on the CAN calibration protocol. Because it provides a standardized interface, it improves the versatility and practicability of the calibration system. [0003] At this stage, CCP-based calibration is divided into online calibration and offline...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
Inventor 马逸行何涛覃兴琨夏珩宫成
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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