Vehicle door scratch pre-warning method

A car door and scraping technology, applied in the direction of signal devices, etc., can solve the problems of less installation positions on the side of the car and insensitive response to small objects, and achieve the effect of avoiding economic losses

Inactive Publication Date: 2018-03-23
JINAN INSPUR HIGH TECH TECH DEV CO LTD
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AI Technical Summary

Problems solved by technology

There are some defects in radar ranging, such as insensitivity to some small objects. For example, the measurement parameters of a certain product show that the effective detection distance of a 75mm tube is only 100cm, which is smaller than the door size of many models.
However, th

Method used

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Embodiment Construction

[0021] The content of the present invention is described in more detail below:

[0022] Such as image 3 As shown, the binocular camera ranging principle of the present invention is as follows:

[0023] According to the principle of similar triangles:

[0024]

[0025] Among them, T is the distance between the two cameras, Z is the distance between the point to be measured and the binocular camera, x l is the position of the point to be measured in the image in the left camera, x r is the position of the point to be measured in the image on the right camera, f can be simply regarded as the focal length, which needs to be determined during calibration after the camera is installed, and is a constant. So it can be deduced that the distance Z of this point is:

[0026]

[0027] Because the camera has a distortion problem, that is, the distortion and deformation of the image caused by the different areas of the focal plane of the lens to the image magnification, so the x...

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Abstract

The invention provides a vehicle door scratch pre-warning method and relates to the technical field of vehicle safety. The vehicle door scratch pre-warning method comprises the following steps of additionally mounting binocular cameras on two sides of a vehicle; when a user pulls a vehicle door handle from the interior of the vehicle to open a door, starting the binocular cameras and identifying an object near the vehicle door by using an image identification technology; judging whether a vehicle door scratch problem is probably caused by the object or not (for example, shrubs and so on may not cause vehicle door scratch, but buildings or vehicles may cause vehicle door scratches); and then calculating the distance from the object near the vehicle door to the vehicle door according to a binocular camera distance measuring principle; when the object is closer to the vehicle door so that the door opening space is not enough, reminding the user of insufficient door opening space through speech; and then enabling the user to control the vehicle door opening or adjust the parking space so as to avoid the vehicle door scratch problem.

Description

technical field [0001] The invention relates to the technical field of vehicle safety, in particular to a method for early warning of car door scratching. Background technique [0002] With the development of society, the number of vehicles is increasing. According to statistics, the number of cars in the world has exceeded 1 billion. With the continuous increase of vehicles, the parking space in cities is getting smaller and smaller. It is due to the lack of parking space, and it is impossible for the owner to ensure that the doors on both sides have enough space to open every time the parking position is reached. Or other vehicles collide, causing the scraping of the car door, making the car owner suffer economic losses. [0003] The existing common vehicle ranging camera for obstacle avoidance draws a distance scale line on the image collected by the camera, and then displays it on the car display screen. The driver judges the approximate distance between the obstacle an...

Claims

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Application Information

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IPC IPC(8): B60Q9/00
CPCB60Q9/005
Inventor 王彦邦段成德于治楼
Owner JINAN INSPUR HIGH TECH TECH DEV CO LTD
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