Automobile door opening anti-collision device and method based on magnetorheological damper

Abstract

The invention discloses a car door opening anti-collision device and method based on a magneto-rheological damper, which includes a forward ultrasonic distance measuring sensor and a backward ultrasonic distance measuring sensor arranged on rearview mirrors on both sides, arranged on each car door The sector scan sensor, electronic control unit ECU, voice alarm, and magneto-rheological damping hinge module. The device can detect dangerous situations in the surrounding environment when the car door is opened, and can be divided into five working modes: no danger, collision danger near the door, obstacle approach danger near the door, obstacle approach danger ahead, and obstacle approach danger behind. According to different working modes, the electronic control unit ECU controls the on-off of different numbers of magneto-rheological damping hinge currents, and gives voice alarm prompts to the people in the car, which not only provides convenience and safety for the people in the car to open the door, but also ensures non-stop Motor vehicle and pedestrian safety.

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...

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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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