Method for storing vehicle-mounted monitoring data

Abstract

The invention discloses a method for storing vehicle-mounted monitoring data, which is characterized in that the method comprises the following steps: step 1, a data file and an index file with a fixed size are pre-created in a storage device; step 2, the data file and the index file are pre-created in a storage device; step 3, the data file and the index file are pre-created in a storage device.The index file comprises a normally used index file I1 and a standby index file I2; 2, creating a time chain list according to that index file; 3, starting audio and video storage; 4, storing audio and video data; 5, judging whether to stop or not; Step 6, the end. The on-board monitoring data storage method of the invention can provide any time period data derivation, the vehicle state can be accurately synchronized with audio and video, and the file access efficiency is high.

Description

technical field [0001] The invention relates to the field of vehicle monitoring data, in particular to a method for storing vehicle monitoring data. Background technique [0002] Vehicle monitoring data includes audio data and video data in the camera on the vehicle and status data of the vehicle body, where the status data includes: vehicle speed, direction, longitude, latitude, alarm status, vehicle diagnostic information, etc. With the evolution of vehicle-mounted equipment such as traditional driving recorders, GPS video terminals, and entertainment systems, in order to conduct remote real-time supervision of vehicles in motion and provide investigators with more powerful materials in case of accidents, people are using remote real-time video , remote video playback, multi-view monitoring and long-term data storage requirements are further enhanced. [0003] Traditional vehicle monitoring data information is to store audio and video media data and vehicle status informa...

AI Technical Summary

Problems solved by technology

[0005] 1. When multiple cameras are stored at the same time, the audio and video data is not continuous, and long-term operation affects memory performance

[0006] 2. When the memory is full, deleting files and creating files repeatedly will easily cause damage to the file system. For mechanical hard disks, hard disk fragments will also be generated, which will reduce the performance of the hard disk.

[0007] 3. Audio and video data and vehicle status information data are stored separately. It is difficult to accurately synchronize audio and video data with vehicle status data, which is not conducive to the restoration of the accident scene

[0008] 4. Audio and video data are stored in audio and video file format, and can only be exported in the form of the entire file, and cannot realize the export of data in any time period

[0009] 5. When multi-channel data is required to be displayed on multiple screens at the same time, the data and time synchronization of each channel is not accurate, and the on-site situation cannot be accurately restored

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