Field rapid evaluation method for pedestrian head closed injuries based on improved evaluation index

A technique for evaluating indicators, head, applied in the fields of traffic engineering and injury biomechanics

Inactive Publication Date: 2016-03-30
THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, GAMBIT only considered inertial factors (linear acceleration and rotational acceleration), but did not include impact force factors into the evaluation of head injuries

Method used

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  • Field rapid evaluation method for pedestrian head closed injuries based on improved evaluation index
  • Field rapid evaluation method for pedestrian head closed injuries based on improved evaluation index
  • Field rapid evaluation method for pedestrian head closed injuries based on improved evaluation index

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Embodiment Construction

[0053] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0054] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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Abstract

The present invention discloses a field rapid evaluation method for pedestrian head closed injuries based on an improved evaluation index. The method comprises: S1, screening a damage index which is used for evaluating head closed injuries in a finite element simulation, and a vehicle-pedestrian accident parameter which is used for evaluating head closed injuries in an accident field investigation; S2, calculating pedestrian head linear acceleration a, head rotational acceleration Alpha, and a skull impact force Fc in a finite element simulation orthogonal experiment; S3, according to the damage index chosen in S1, accquring a weight coefficient of an index according to a head closed injuries epidemiology investigation to form a comprehensive evaluation index of pedestrian head closed injuries; S4, according to regression analysis on head closed injuries epidemiology data, acquiring an impact factor function of damage evaluation; and S5, investigating and acquiring the vehicle-pedestrian accident parameter chosen in S1, calculating an injury degree probability of the head closed injuries, and grasping an injury severity degree of the pedestrian head closed injuries, so as to rapidly perform corresponding field emergency treatment according to pedestrian head injuries conditions.

Description

technical field [0001] The invention relates to the fields of traffic engineering and injury biomechanics, in particular to a rapid evaluation method for pedestrian head closure injury scene based on improved evaluation index. Background technique [0002] The common form of pedestrian head blunt injury caused by car collision with pedestrians is generally skull and brain injury. Skull injury mainly manifests as skull fracture; brain injury is divided into concentrated brain injury and diffuse brain injury. Concentrated brain injury includes brain contusion (impact injury and contralateral impact injury), subdural hematoma, epidural hematoma, subarachnoid hemorrhage, etc.; diffuse brain injury includes concussion and diffuse axonal injury ( DAI) and so on. The main factors causing the above injuries include: concentrated pressure, intracranial viscous load and head inertial load; it can also be considered as impact force factor and inertial factor (including linear acceler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 刘文君尹志勇王雪蕊杨光瑜明健雄
Owner THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
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