Method for determining passenger submarining in head-on collision of vehicles

Abstract

The invention provides a method for determining passenger submarining in a head-on collision of vehicles. The method comprises: derivation processing is carried out on an iliac bone force-time curve to obtain an iliac bone force changing rate (5) curve and whether the amplitude of the curve reaches 1KN / ms is determined; if the amplitude of the curve is larger than 1KN / ms, whether a pulse width (6) between two points is smaller than 1ms when a vertical axis value in the iliac bone force changing rate (5) curve is equal to the 1KN / ms; when the pulse width (6) between two points is larger than or equal to the 1 ms, a time at which a pelvis accelerated speed (8) is equal to a vehicle body accelerated speed (7) is determined to be a pelvis springback (0) time (10); and when the phenomenon that the amplitude of the curve is larger than 1KN / ms occurs after the pelvis springback (0) time (10), whether the stress on an iliac bone sensor is larger than or equal to 2400N is determined. Therefore, whether a passenger submarining phenomenon occurs in a head-on collision of vehicles can be determined accurately, fast, and scientifically.

Description

technical field [0001] The invention belongs to the field of automobile collision safety detection, in particular to a method for judging occupant submersion in vehicle frontal collision. Background technique [0002] Statistics from CIDAS in recent years show that in collision accidents, the probability of passengers in the front and rear rows is about 1:4, and the phenomenon of small-sized passengers in the rear is more common. Under the existing technical conditions, the focus of research in the field of automotive passive safety is mainly on the injuries of front-seat occupants. On the issue of how to improve the injuries of front-seat occupants, there have been very mature theories and solutions, and a large number of Advanced passive safety configurations, such as force limiting, tight seat belts 3, head / knee airbags, etc. However, compared with front-seat occupants, there is less research on how to improve the injuries of rear-seat occupants, and the rear-seat positi...

AI Technical Summary

Problems solved by technology

[0003] Based on the above-mentioned reasons, when the vehicle has a frontal collision, the lower torso of the small-sized occupant has a tendency to slide downward from the seat. It acts on the abdominal soft tissue of the occupant, increasing the possibility of injury to the abdomen of the human body, which leads to higher medical costs. According to the statistics of relevant insurance departments, among the medical costs of various parts of the human body, the medical costs of the abdomen are about 100% of those of other parts. double

The slipping of the belt on the abdomen is called "submersion" in academia, which is an unexpected phenomenon in the event of a vehicle collision. This kind of injury is uncertain and variable, and the existing standards and regulations cannot be used for this kind of injury. Effectively defined, there is little research on this type of injury in the world; when developing passive safety performance of vehicles, this phenomenon is also a problem that parts and vehicle companies need to consider when developing products

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