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Data recording method, device, memory and t-box

A T-BOX and data recording technology, applied in the T-BOX field, can solve the problems that the vehicle factory cannot obtain data records, the time it takes to write data to the disk, and the system processing is slow, so as to achieve fast speed and reduce the cost of reading data process, the effect of improving integrity

Active Publication Date: 2022-04-29
BEIJING JINGWEI HIRAIN TECH CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] T-BOX writes the received data to the disk frame by frame, and will start multiple system calls, causing the data to be written to the disk to take up most of the time
The file is compressed simultaneously during the data receiving process, which further causes the system burden
Slow system processing, serious data loss, and complete data records cannot be obtained by OEMs

Method used

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  • Data recording method, device, memory and t-box
  • Data recording method, device, memory and t-box
  • Data recording method, device, memory and t-box

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] This embodiment provides a data recording method based on a T-BOX containing two memory chips. For the data recording method, see figure 1 , including the steps:

[0037] S11: Receive the vehicle running state data, and add a time stamp to the vehicle running state data according to the time when the vehicle running state data is received.

[0038] In this embodiment, the vehicle running state data is CAN, CAN FD and / or LIN communication messages.

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Abstract

The invention provides a data recording method, device, memory and T-BOX. The method is based on a T-BOX containing two memory chips, and directly writes the data stream into the memory, which is faster than writing to a disk, and two memory chips The setting ensures that the writing of the data stream will not be interrupted, reducing data loss and improving the integrity of data records. The amount of data compressed is smaller than that of uncompressed data, so the data is compressed and then written to the disk, which shortens the time for data to be written to the disk; and the data in the memory is directly compressed, compared with file compression, which reduces reading from the disk data processing, reducing system overhead. Further, the data format is converted into a binary format, which improves compression efficiency and reduces disk occupation. And upload the data in real time, you can know the running status of the vehicle in time.

Description

technical field [0001] The present invention relates to the field of T-BOX, more specifically, relates to a data recording method, device, memory and T-BOX. Background technique [0002] When vehicle manufacturers conduct road condition tests on vehicles, they need to monitor the vehicle's operating status data. For example, test road conditions such as high and low temperature, high and low altitude, flat roads, mountain roads and bumpy roads. During the entire driving process of the vehicle, use T-BOX (Telematics BOX, telematics processor) to record and save the data when the vehicle is running. After the run is over, the data is copied out for analysis. Data records based on T-BOX are currently mainly for CAN (ControllerArea Network, controller area network) / CANFD (Controller Area Network with Flexible Datarate) communication messages and LIN (Local Interconnect Network, local area interconnection network) communication messages data records. Both CAN / CANFD communicati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 高攀
Owner BEIJING JINGWEI HIRAIN TECH CO INC