Automobile door opening collision-prevention device and method

Abstract

The invention discloses an automobile door opening collision-prevention device and a method. The automobile door opening collision-prevention device comprises a forward ultrasonic ranging sensor and abackward ultrasonic ranging sensor, a fan-shaped scanning sensor, an electric control unit ECU, a voice alarm and a magneto-rheological damping hinge module, wherein the forward ultrasonic ranging sensor and the backward ultrasonic ranging sensor are placed on two side rear-view mirrors, and the fan-shaped scanning sensor is placed on each automobile door. According to the automobile door openingcollision-prevention device, surrounding environment dangerous situations can be detected when an automobile door is opened; and the automobile door opening collision-prevention device have five working modes of no danger, collision danger near the automobile door, obstacle approaching danger near the automobile door, obstacle approaching danger in the front and obstacle approaching danger in therear. According to the different working modes, the electric control unit ECU controls on-off of current of different numbers of magneto-rheological damping hinges, voice alarming prompt can be madefor personnel in an automobile; and therefore, convenience and safety can be provided for the personnel in the automobile during opening the automobile door, and safeties of non-motor vehicles and pedestrians.

Description

technical field [0001] The invention relates to the field of automobile electronic control, in particular to an automobile door opening anti-collision device and method based on a magneto-rheological damper. Background technique [0002] When the car is parked and the driver and passengers in the car open the door, unnecessary traffic safety accidents are often caused by not paying attention to the surrounding environment of the car when opening the door. It will bring safety hazards to the people getting off the car, and may also cause unnecessary losses to approaching obstacles. [0003] In order to solve the problem when the above-mentioned car door is opened, a large amount of researches have been done domestically and relevant patents have been applied for. Among them, the vision-based car door opening collision warning device and method (application number: 201510504544.6) utilizes the characteristics of the fisheye camera's angle of view close to 180 degrees to compl...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to solve the problems of high cost, difficulty in detecting the approaching speed of obstacles, single door opening prevention device or complex control in the existing automobile door opening reminder and early warning device, and proposes a magnetorheological damping based The car door opening anti-collision device and method have simple structure, low cost, can uniformly detect pedestrians and objects approaching at different speeds, prevent the door opening mechanism from being easy to actively control, can improve the safety of the car, and reduce the probability of accidents when the car door is opened

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