Data recording apparatus and data recording method

A technology for data recording and vehicle data, applied in the direction of measurement device, registration/indication, time register, etc., can solve the problems of recording failure, inability to collect sampling data itself, and reduced reliability of recorded data, and achieve reliability improvement and reduction. Recording failures and avoiding the effects of recording failures

Inactive Publication Date: 2005-08-31
SUBARU CORP
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Problems solved by technology

Therefore, even if the subsequent trigger conditions are met during such an interruption, the sampling data itself cannot be collected, and of course it is impossible to store such data in the data recording unit
As a result, when the trigger conditions are satisfied successively, recording failure of the necessary data will occur, thereby causing a decrease in the reliability of the recorded data

Method used

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  • Data recording apparatus and data recording method
  • Data recording apparatus and data recording method
  • Data recording apparatus and data recording method

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Embodiment Construction

[0011]

FIG. 1 is an explanatory diagram of a vehicle to which a data recording device according to an embodiment of the present invention is added. First, before explaining the data recording device 1 (hereinafter simply referred to as "recording device"), a vehicle to which the recording device 1 is added will be explained below. An electronic control unit 2 (hereinafter referred to as "ECU") is equipped in the vehicle for performing control of various units equipped to the vehicle. The ECU 2 is mainly composed of a microcomputer. In the present embodiment, an engine control unit 2 a (hereinafter simply referred to as "E / G-ECU") for controlling the engine 4 as a representative unit will be mainly explained below. However, the present invention can be similarly applied to an automatic transmission control unit (AT-ECU) that performs automatic transmission control, an ABS control unit (ABS-ECU) that performs anti-lock braking system control, and the like. In this applicatio...

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Abstract

A data recording device collects vehicle data in time series. Then, record into the data recording unit a series of vehicle data that meet the predetermined acquisition conditions and are collected in a predetermined period, the series of vehicle data comes from the time-series vehicle data collected by the data acquisition unit, and associate it with time information at the same time . When the data control unit records a series of vehicle data in the data recording unit, the data acquisition unit continues to collect vehicle data.

Description

[0001] This application claims foreign priority based on Japanese Patent Application JP-2004-055043 filed on February 27, 2004, the contents of which are hereby incorporated by reference into this application. technical field [0001] The present invention relates to a data recording device and a recording method thereof, and more particularly, to a method of recording vehicle data including control parameters provided in a control unit on a vehicle. Background technique [0002] In the prior art, in order to identify vehicle fault conditions, a data recording device is known for downloading control parameters provided in a control unit on the vehicle and then recording such parameters. For example, JP-A-2002-070637 discloses a data recording device for efficiently recording data of a control unit without error by effectively utilizing a limited storage capacity. In the data recording device of JP-A-2002-070637, according to time series, various data (that is, control pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007F02D45/00G07C5/00G07C5/08
CPCG07C5/085G07C5/08
Inventor 野口清成
Owner SUBARU CORP
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