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Fault code, data stream and freeze frame data storage and playback method

A technology of data storage and data flow, which is applied in the fields of fault codes, data flow and freeze frame data storage and playback of automotive diagnostic equipment, and can solve problems that are difficult to meet

Active Publication Date: 2014-07-02
LAUNCH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing automotive diagnostic equipment has very complete diagnostic functions, which can detect and read out a lot of car diagnostic information in real time, including on-board diagnostic system (OBD) data and specific data corresponding to various models, such as fault codes ( DTC), data stream (STR), freeze frame (FRZ), VIN (Vehicle Identification Number, vehicle identification code) code and other data, and some devices have special functions, such as car maintenance light reset, car maintenance cycle setting, Car brake pad reset, steering angle sensor calibration, etc., are all obtained by real-time communication and data collection between car diagnostic equipment and car communication network. However, without data storage, it is difficult to meet some applications that require a large amount of data and post-event analysis

Method used

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  • Fault code, data stream and freeze frame data storage and playback method
  • Fault code, data stream and freeze frame data storage and playback method

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Embodiment Construction

[0022] see figure 1 , which is a flow chart of the method for saving and replaying fault codes, data streams and freeze frame data of the present invention, including:

[0023] Step 10, record the fault code, data stream and freeze frame data in the data area of ​​the memory; the corresponding address can be found according to the starting address of the data area for recording;

[0024] Step 20, record the index of the fault code, data stream and freeze frame data in the index area of ​​the memory; the corresponding address can be found and recorded according to the starting address of the index area;

[0025] Step 30, record the starting address of the index area and the starting address of the data area in the public area of ​​the memory when recording next time; it is convenient for the memory to quickly find the corresponding address when performing data recording and index recording, and to judge whether the space is convenient. Full to prevent overflow, thus suitable f...

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Abstract

The invention relates to a fault code, data stream and freeze frame data storage and playback method. The method includes the steps that first, fault code, data stream and freeze frame data are recorded in a data area of a memory; second, indexes of the fault code, data stream and freeze frame data are recorded in an index area of the memory; third, when the next record is made, the start address of the index area and the start address of the data area are recorded in a public area of the memory; fourth, when the data are played back, the index area is searched so as to correspondingly read out the data in the data area. According to the fault code, data stream and freeze frame data storage and playback method, through recording of a large amount of data of fault codes, data streams and freeze frames, professionals and car owners can reasonably analyze data of cars so as to judge the using states and the diagnosis problems of the cars, and thus professional analysis is obtained.

Description

technical field [0001] The invention relates to automobile diagnosis technology, in particular to a method for storing and replaying fault codes, data streams and freeze frame data of automobile diagnosis equipment. Background technique [0002] Existing automotive diagnostic equipment has very complete diagnostic functions, which can detect and read out a lot of car diagnostic information in real time, including on-board diagnostic system (OBD) data and specific data corresponding to various models, such as fault codes ( DTC), data stream (STR), freeze frame (FRZ), VIN (Vehicle Identification Number, vehicle identification code) code and other data, and some devices have special functions, such as car maintenance light reset, car maintenance cycle setting, Car brake pad reset, steering angle sensor calibration, etc., are all obtained by real-time communication and data collection between car diagnostic equipment and car communication network. However, without data storage, ...

Claims

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Application Information

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IPC IPC(8): G06F17/40
Inventor 刘均廖勇刚
Owner LAUNCH TECH CO LTD
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