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Dual-core automobile data recorder and system

A driving recorder and main control chip technology, applied in the direction of instruments, registration/indication, time register, etc., can solve the problems of system crash, difficulty in judging the normal operation of the recorder, memory card cannot be stored, etc.

Inactive Publication Date: 2016-10-26
胡继强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But without the display screen, it is difficult to judge whether the recorder is working normally and stored in the memory card normally. For example, the system crashes, for example, the memory card cannot be stored.
Although the chances of these things happening are very small, they will be magnified when they involve traffic safety, and the consequences will be more serious

Method used

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  • Dual-core automobile data recorder and system

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Experimental program
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Effect test

Embodiment Construction

[0012] In order to realize the present invention, a preferred technical solution is provided here.

[0013] The dual-core driving recorder is composed of an Ambarella A12 main control chip system and an 8051 single-chip microcomputer system. The A12 main control chip converts analog into digital signal data and stores them on an external SD memory card.

[0014] The 8051 single-chip microcomputer system reads the latest data on the SD card for the first time and saves it temporarily every 1 second, and then reads the latest data on the SD card for the second time every 1 second, and compares it with the last saved data .

[0015] The threshold is set at 80%. If it exceeds 80%, it means that the two parts of the data are the same. Then, discard the data saved for the first time, and save the data for the second time in the temporary memory area. . . and so on.

[0016] In the actual scene, according to the performance of the main control chip and the memory card, the freq...

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PUM

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Abstract

The invention relates to a dual-core automobile data recorder and system. The dual-core automobile data recorder comprises a master control chip, a camera, an internal memory unit, a power managing module, a storage card and the like. The dual-core automobile data recorder is at least provided with one master control chip system and one single-chip microcomputer system. The master control chip system and the single-chip microcomputer system have a shared data area. The master control chip system stores acquired data information into the shared data area, the single-chip microcomputer system regularly reads the shared data area and compares the data with previously read data. The dual-core automobile data recorder has the advantages that when the master control chip system fails and storage card writing fails, detection can be performed by the single-chip microcomputer system, and a user can be notified.

Description

technical field [0001] The invention relates to the field of vehicle equipment, in particular to a driving recorder and a system. Background technique [0002] With the increase of traffic accidents and the phenomenon of touching porcelain, more and more car owners are equipped with driving recorders. In some countries, the driving recorder is already a standard configuration of the car. [0003] A conventional driving recorder is composed of a professional-level main control chip, such as Ambarella A12 model, camera, memory card, display and other modules. Some dexterous driving recorders have also removed the display screen. The display screen will block the driver's view and reflect light, which does not help safe driving much. But without the display screen, it is difficult to judge whether the recorder is working normally and stored in the memory card normally, for example, the system crashes, for example, the memory card cannot be stored. Although the chances of th...

Claims

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Application Information

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IPC IPC(8): G07C5/08
CPCG07C5/085G07C5/0858
Inventor 胡继强王玲真
Owner 胡继强