Method and device for generating files of MDF format

A format file and format technology, applied in the field of MDF format file generation, can solve the problems of high price, complicated and cumbersome methods, and inconvenient use by engineers, and achieve the effect of simple generation method and reduced cost

Active Publication Date: 2015-06-17
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing methods for generating MDF format files are relatively complicated and cumbersome, and the device for generating MDF format is expensive, which is inconvenient for engineers to use during on-site debugging

Method used

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  • Method and device for generating files of MDF format
  • Method and device for generating files of MDF format
  • Method and device for generating files of MDF format

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0041] Such as figure 1 As shown, the embodiment of the present invention provides a method for generating an MDF format file, comprising the following steps:

[0042] S1. Create description information of a fixed part according to the MDF file format, the fixed part includes parts from IDBLOCK, HDBLOCK, DGBLOCK, CGBLOCK to CNBLOCK;

[0043] S2. Temporarily store the measurement data received from the ECU into the linked list according to the first preset cycle; the first preset cycle

[0044] S3. Convert the measurement data in the linked list according to the double-precision floating-point number format according to the second preset period, and fill the converted data into the MDF file format to obtain the MDF format file; wherein the second preset period is the first N times the preset period.

[0045] The present invention provides a method for generating an MDF format file, by temporarily storing the measurement data received from the ECU in the first preset period in...

Embodiment 2

[0069] Such as figure 2 As shown, the embodiment of the present invention also provides a device for generating MDF format files, including the following modules:

[0070] Create a description information module, which is used to create description information of a fixed part according to the MDF file format, and the fixed part includes a part from the initial IDBLOCK to the CNBLOCK;

[0071] The temporary data storage module is used to temporarily store the measurement data received from the ECU in the linked list according to the first preset period;

[0072] The data conversion module is used to convert the measurement data in the linked list in the double-precision floating-point number format according to the second preset cycle, and fill the converted data into the MDF file format; the fixed part obtained by improving the description information module The descriptive information and the data converted by the data conversion module and filled into the MDF file format h...

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Abstract

The invention provides a method and device for generating files of an MDF format and relates to the field of recording of vehicle-mounted data. The method comprises the steps that S1, description information of a fixed part is established according to the MDF file format, the fixed part comprises the part from an initial IDBLOCK to CNBLOCK; S2, measured data received from an ECU is temporarily stored in a chain table according to a first preset period; S3, measured data in the chain table are converted in a double-precision floating-point format according to a second preset period, and converted data are filled into the MDF file format to obtain files of the MDF format; the second preset period is N times of the first preset period. The files of the MDF format generated through the method are simple in generating method, meet industrial standards, can be applied to relative cheap interface tools such as PCAN, and the cost of the generating device is lowered.

Description

technical field [0001] The invention relates to the field of vehicle-mounted data recording, in particular to a method and device for generating an MDF format file. Background technique [0002] When a car is being tested, it often encounters various problems, and some problems can only be reproduced under certain special conditions. To solve these problems, engineers need to understand the state of the car at the time of the problem. The MDF (Measurement Data Format) format is a data format for recording data, data exchange and data analysis in the automotive industry developed by Vector, and is a general standard for measurement data in the automotive field. Engineers can use MDF format files to easily analyze the operating status and parameter values ​​of the system in a period of time, so as to accurately find out the problem. [0003] Commonly used MDF format files are obtained through the INCA software of ETAS Company, which records data during the measurement and ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/44
Inventor 李然张君鸿鲁连军左从兵
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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