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New energy vehicle fault data acquisition method and device

A technology for new energy vehicles and vehicle data, which is applied in the field of new energy vehicle fault data collection, can solve the problems of increased storage costs and difficulty in finding data for R&D personnel, and achieves the effect of reducing storage costs.

Active Publication Date: 2014-01-22
WUHAN INTEST ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the amount of data is very large. Generally, the baud rate of one CAN network is 500Kbps. New energy vehicles generally have more than two CAN networks. The vehicle terminal stores all the data during the driving process of the vehicle, which will form a massive database ( It can reach several GB of data per day), which will not only increase storage costs, but also make it very difficult for developers to find fault-related data in a large amount of data

Method used

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  • New energy vehicle fault data acquisition method and device
  • New energy vehicle fault data acquisition method and device
  • New energy vehicle fault data acquisition method and device

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Experimental program
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Embodiment approach

[0028] Such as figure 2 Shown, as a kind of typical implementation mode of the present invention, implementation content is described as follows:

[0029] 1) Specify the name of the fault signal in the protocol file of the vehicle, which can be identified through the dbc protocol database file, so that the vehicle terminal can understand which signals are fault signals.

[0030] 2) Through the remote control platform or the local configuration file, when a fault occurs, the on-board terminal should store the data of how long before and after (recorded as t1), such as 5 minutes before and after, or 30 seconds before and after.

[0031] 3) After obtaining the above information, the vehicle-mounted terminal enters the working state and starts to listen to the messages on the CAN bus;

[0032] 4) The vehicle-mounted terminal analyzes each message according to the communication protocol, and judges whether there is a fault. Whether a fault occurs in a new energy vehicle is gener...

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Abstract

The invention discloses a new energy vehicle fault data acquisition method and a device. The method comprises the following steps: the latest first vehicle data of a first time period are acquired; second vehicle data of a second time period are acquired from generation of a fault, wherein the first vehicle data and the second vehicle data comprise controller local area network CAN messages; the first vehicle data and the second vehicle data are combined to form a combined file; the combined file is compressed so that a compressed file is obtained; and the compressed file is stored in a storage device. The positive effects of the new energy vehicle fault data acquisition method and the device are that problems that a new energy vehicle is limited in fault data storage space and low in pertinence of the stored data during a driving operation state data recording process are solved so that storage cost can be greatly reduced.

Description

technical field [0001] The invention relates to a new energy vehicle fault data collection method and device. Background technique [0002] New energy vehicles have developed vigorously at home and abroad. According to national regulations, new energy vehicles must be installed with remote monitoring vehicle terminals in proportion to different development stages. The terminal needs to collect the data of the vehicle controller in real time through CAN bus and GPS sensor, including battery management system (BMS), vehicle controller, motor controller, etc. These data also include fault information of the individual control systems. The status data of the vehicle will be regularly sent to the remote monitoring platform (generally established by the government or the vehicle manufacturer), which plays the role of monitoring and safety warning. [0003] In addition to safety warnings, vehicle data is very important for R&D departments of vehicle manufacturers, especially data...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 易舟李立糜锋
Owner WUHAN INTEST ELECTRONICS TECH
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