Video recording system and video recording method of accident situation in travelling process

Abstract

The invention discloses a video recording system and video recording method of accident situation in travelling process. The video recording system comprises: an electronic stable program system which is used for acquiring vehicle speed information, a safe restraint system which is used for acquiring collision information, and an automobile data recorder which comprises a central processor and a CAN transceiver. The CAN transceiver communicates with the safe restraint system and the electronic stable program system through a whole vehicle network. The CAN transceiver reads the vehicle speed information and the collision information and sends the vehicle speed information and the collision information to the central processor. The central processor calculates a deceleration value of an operation of a vehicle on the basis of the vehicle speed information. If the automobile data recorder is in on state and the deceleration value achieves a preset value or the collision information is received, an accident situation storage function of the automobile data recorder is activated; if the automobile data recorder is in off state and the deceleration value achieves a preset value or the collision information is received, the automobile data recorder is started and the accident situation storage function of the automobile data recorder is activated. By means of the system and the method, information of an accident situation is ensured to be accurately recorded.

Description

technical field [0001] The invention belongs to the automobile electronic technology, and in particular relates to a video recording system and method for emergencies during driving. Background technique [0002] With the rapid development of the global automobile industry, the number of automobiles is increasing, which leads to the frequent occurrence of vehicle traffic accidents. However, due to the inability to accurately record the process of the accident and the driver's operation, many accidents cannot be well identified. Therefore, recording the front video information of the vehicle and the real-time operating status information of the vehicle will make the accident The judgment is more accurate. Therefore, more and more car owners have chosen to install a car driving recorder to shoot and store the driving process. [0003] At present, most of the passenger car driving recorders on the market are products purchased by the car owners themselves later. In order to r...

AI Technical Summary

Problems solved by technology

However, in actual situations, emergency braking is performed before many collision accidents, and the degree of collision may be relatively light. The vibration sensor may not output corresponding information at all to activate the sudden change video, resulting in this part of video information not being retained and erased;

[0007] (3) For some emergencies that do not cause collisions, such as emergency braking and collisions, since there is no vibration signal output, they cannot be stored as sudden changes, and there is a possibility of being erased.

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