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Car collision detection method and device based on three-shaft acceleration sensor

A technology of shaft acceleration and collision detection, applied in instruments, time registers, registration/indication of vehicle operation, etc., can solve the problems of low precision and low accuracy.

Active Publication Date: 2015-04-29
SHENZHEN APICAL TECH CO LTD
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a vehicle collision detection method and device based on a three-axis acceleration sensor in view of the above-mentioned defects of the prior art, aiming at solving the problem of low accuracy and low precision of the existing vehicle collision detection The problem

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  • Car collision detection method and device based on three-shaft acceleration sensor
  • Car collision detection method and device based on three-shaft acceleration sensor

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Embodiment Construction

[0038]The present invention provides a vehicle collision detection method and device based on a three-axis acceleration sensor. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] see figure 1 , figure 1 The flow chart of a preferred embodiment of the vehicle collision detection method based on the three-axis acceleration sensor provided by the present invention, the vehicle collision detection method includes the following steps:

[0040] Step S100, collecting the acceleration values ​​of the three axes every predetermined time by the three-axis acceleration sensor;

[0041] Step S200, read the current three-axis acceleration value of the...

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Abstract

The invention discloses a car collision detection method and device based on a three-shaft acceleration sensor; the method is as follows: collecting three shaft acceleration values once by the three-shaft acceleration sensor in every scheduled time; reading current three shaft acceleration values of a car, performing arithmetic average processing on predetermined times of three shaft acceleration values before the current three shaft acceleration values of the car, calculating the average value of the predetermined times of three shaft acceleration values on each shaft; calculating the difference values between the current three shaft acceleration values of the car and the average value corresponding to each shaft, and judging whether the car collision happens according to the difference values and threshold. The car collision detection method and device can effectively suppress influences caused by abnormal sudden beats during sensor sampling, effectively avoid detection misjudgment caused by angle difference of equipment installation, and effectively inhibit collision detection misjudgment caused by normal acceleration and deceleration, and is high in accuracy and low in misjudgment rate.

Description

technical field [0001] The invention relates to the technical field of automobile collision detection, in particular to a method and device for automobile collision detection based on a three-axis acceleration sensor. Background technique [0002] At present, the driving recorders on the market generally save the recorded video to the memory card. In order to be able to record continuously, when the space of the memory card is used up, it is necessary to delete the earliest recorded video in the card, thereby releasing new data. out of storage space. Such processing can ensure that the recording can continue, but this will cause the important video files already stored in the memory card (such as: the video when the collision occurred) to be deleted. In order to solve this problem, it is necessary to perform special processing on important videos to prevent them from being automatically deleted. Therefore, it is necessary to detect collision accidents while driving, so as ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C5/08
Inventor 邓细秋
Owner SHENZHEN APICAL TECH CO LTD
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