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Automobile danger grading and pre-warning system and method

An early warning system and dangerous technology, applied in the direction of signal devices, etc., can solve the problems of cumbersomeness, failure to take into account the small probability of the car, and failure to take into account the receipt of warning information, etc., to achieve low environmental interference, simple installation, and low cost Effect

Active Publication Date: 2019-02-22
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former does not take into account the contradiction between the frequency of door opening and the small probability of door opening accidents. It would be too cumbersome to send an alarm to the occupants before opening the door; You must be able to receive the warning message, or even if you receive it, it is too late to avoid it, which cannot solve the problem very well.

Method used

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  • Automobile danger grading and pre-warning system and method
  • Automobile danger grading and pre-warning system and method
  • Automobile danger grading and pre-warning system and method

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specific Embodiment approach

[0036] As a specific implementation mode, after the single-chip microcomputer realizes the spatial risk classification according to the distance and speed of the vehicle detected by the sensor, the grading early warning module gives three-level early warning in the car: first-level early warning, the door indicator light flashes; second-level early warning , a warning sound is issued, and a voice prompt is issued; for the third-level warning, the door is locked and cannot be opened.

[0037]The specific working process of the above-mentioned automobile risk classification and early warning system is as follows: the GPS speed measurement module detects the speed of the vehicle in front, and when it detects that the vehicle in front stops, the infrared sensor is activated to detect the speed and distance of the vehicle coming from behind; The distance and speed of the car can be used to realize the risk classification in space; the graded early warning module gives early warning ...

Embodiment approach

[0038] As a specific implementation, when the infrared sensor detects the vehicle A coming from behind, the single-chip computer sends A to the point s 1 required time t i As a classification variable for risk classification, the specific methods are as follows:

[0039] First, calculate A reaching point s 1 required time t i :

[0040]

[0041] When v is unknown, the maximum value v=30km / h can be taken. Then, using the fuzzy C clustering method, t i Divided into 3 categories, i=1,2,3 is the third category, corresponding to the third level early warning; i=4,5,6 is the second category, corresponding to the second level early warning; i=7,8 is the first category , corresponding to the first level of early warning.

[0042] As a specific implementation, the hierarchical early warning module gives three levels of early warning in the car: the first level of early warning, the door indicator light flashes; the second level of early warning, the warning sound is issued, an...

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Abstract

The invention discloses an automobile danger grading and pre-warning system and method. A GPS speed measurement module detects the speed of a front vehicle; when the GPS speed measurement module detects that the front vehicle stops, an infrared sensor is started to detect the speed and the distance of a vehicle behind; a single-chip microcomputer realizes danger grading spatially according to thedistance and speed of the vehicle behind; and a grading pre-warning module gives early warning in the vehicle. The automobile danger grading and pre-warning system is low in cost, nearly free of environmental disturbance and simple in mounting, can be directly mounted on a car, has certain pre-warning function to a door-opening accident and has wide application prospect.

Description

technical field [0001] The invention relates to the field of automobile safety, in particular to an automobile door opening risk classification and early warning system and method. Background technique [0002] In recent years, with the acceleration of urbanization and the rapid increase in the number of cars, door opening accidents also account for an increasing proportion of urban traffic accidents. The car coming from the rear is usually an electric bicycle. Because its speed is much faster than that of a bicycle, it is very close to the cars on the road. When the car opens the door, it is too late to dodge, causing greater casualties. [0003] At present, the relevant theoretical research at home and abroad is blank. There are several domestic patents dedicated to solving this problem. The early warning device for opening the car door (application number: 201621386968.3) adopts the method of sending an alarm to the occupants of the car every time the door is opened. A p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q9/00
CPCB60Q9/008
Inventor 桑乃云陈冲王宝华王振益
Owner NANJING UNIV OF SCI & TECH