External airbag deployment method and system
First Claim
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1. An external airbag deployment method comprising:
- setting, by a controller, a detection area located in front of a vehicle based on a full deployment time of an external airbag and a relative velocity upon colliding with another object;
selecting, by the controller, a target object from objects detected in the detection area by comparing a relative velocity, an overlap, and a Time To External Airbag (EAB) (TTE), which is a remaining time until an airbag cushion collides with each object when the external airbag is predicted to be deployed; and
deploying, by the controller, the external airbag when a relative velocity and an overlap, predicted when a collision with the target object occurs, are greater than predetermined levels,wherein the setting the detection area includes;
setting, by the controller, a basic area, which is moved to correspond with steering movement of the vehicle, to cause the basic area and the detection area to overlap; and
eliminating, by the controller, an object that is not detected in the basic area, from the detected objects, when a number of objects detected in the detection area is beyond detection ability,wherein the detection area includes a minimum value corresponding to a position closest to the vehicle and a maximum value corresponding to a position farther from the vehicle,wherein the minimum value is calculated by multiplying a minimum relative velocity by a TTE, which is the remaining time until the airbag cushion collides with the object when the external airbag is predicted to be deployed, and assign a thickness of the external airbag to the multiplied value, andwherein the minimum value is calculated by multiplying a minimum relative velocity by a TTE, which is the remaining time until the airbag cushion collides with the object when the external airbag is predicted to be deployed, and assign a thickness of the external airbag to the multiplied value.
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Abstract
Disclosed herein is an external airbag deployment method of determining whether to deploy an external airbag. The method includes setting, by a controller, a detection area that has a predetermined range and tracking physical characteristics of objects entering the detection area. The detection area is a predetermined area located in front of a vehicle and is set by the controller based on a full deployment time of the external airbag and a relative velocity upon colliding with another object.
14 Citations
6 Claims
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1. An external airbag deployment method comprising:
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setting, by a controller, a detection area located in front of a vehicle based on a full deployment time of an external airbag and a relative velocity upon colliding with another object; selecting, by the controller, a target object from objects detected in the detection area by comparing a relative velocity, an overlap, and a Time To External Airbag (EAB) (TTE), which is a remaining time until an airbag cushion collides with each object when the external airbag is predicted to be deployed; and deploying, by the controller, the external airbag when a relative velocity and an overlap, predicted when a collision with the target object occurs, are greater than predetermined levels, wherein the setting the detection area includes; setting, by the controller, a basic area, which is moved to correspond with steering movement of the vehicle, to cause the basic area and the detection area to overlap; and eliminating, by the controller, an object that is not detected in the basic area, from the detected objects, when a number of objects detected in the detection area is beyond detection ability, wherein the detection area includes a minimum value corresponding to a position closest to the vehicle and a maximum value corresponding to a position farther from the vehicle, wherein the minimum value is calculated by multiplying a minimum relative velocity by a TTE, which is the remaining time until the airbag cushion collides with the object when the external airbag is predicted to be deployed, and assign a thickness of the external airbag to the multiplied value, and wherein the minimum value is calculated by multiplying a minimum relative velocity by a TTE, which is the remaining time until the airbag cushion collides with the object when the external airbag is predicted to be deployed, and assign a thickness of the external airbag to the multiplied value. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification