Personalized adjustable dummy device for body segment and joint characteristics

A joint and dummy technology, which is applied in the field of dummy devices with personalized and adjustable body segments and joint characteristics, can solve the problems of lack of objective and accurate description of joint dynamic characteristics, and cannot reflect the body segment moment of inertia of the human body, so as to improve The effect of biological simulation, efficiency improvement and cost reduction

Active Publication Date: 2022-06-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing dummy is a static human body model established from the perspective of biomedicine, which only reproduces the geometric length and mass characteristics of the human body segment, but cannot reflect the moment of inertia of the human body segment; it lacks the knowledge of the joint dynamic characteristics of the real human body during the collision process. Objective and accurate description; no personalized simulation for a specific real human body

Method used

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  • Personalized adjustable dummy device for body segment and joint characteristics
  • Personalized adjustable dummy device for body segment and joint characteristics
  • Personalized adjustable dummy device for body segment and joint characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0173] Simulates a person's right thigh and calf.

[0174] The length, mass, center of mass position, moment of inertia of the right thigh of the human body, and the length, mass, position of the center of mass, and moment of inertia of the human body were obtained through medical imaging; according to the paper [Increased core stability is associated with reduced knee valgus during single-leg landing] tasks: Investigating lumbar spine and hip joint rotational stiffness. J Biomech, 2021, 116: 110240.] Experimental method to measure the rotational stiffness of the knee joint in flexion and extension of the human body under impact.

[0175] In the thigh simulation body segment, select a straight tube with a diameter similar to the thigh bone to simulate the thigh body segment by adjusting the thread length between the upper straight tube 111 and the lower straight tube 112, so that the length of the straight tube 11 is the same as that of the thigh bone, respectively. A washer 1...

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Abstract

The invention discloses a dummy device with individual adjustable body segments and joint characteristics, which comprises a simulated body segment (1) and simulated joints (2), and the simulated body segment (1) includes a straight cylinder (11) and a counterweight Seat (12), the counterweight seat (12) is clamped on the cylindrical surface of the straight cylinder (11), and the described counterweight seat (12) can be clamped on different positions on the cylinder surface of the straight cylinder (11). A spring (23) is arranged in the simulated joint (2), so that the joint has a certain torque stiffness. The dummy device with personalized and adjustable body segments and joint characteristics disclosed by the present invention can adjust different body segment inertia parameters, including the moment of inertia coefficient matrix of each body segment, and joint torsional stiffness, and can simulate a real individual when it is impacted The motion characteristics and mechanical response of the musculoskeletal system.

Description

technical field [0001] The invention relates to the field of test dummy devices, in particular to a dummy device with individualized adjustable body segment and joint characteristics. Background technique [0002] The research of the dummy device mainly includes the reproduction of the inertial parameters of the human body segment, the description of the dynamic characteristics of the joint bones and muscles, and the personalized simulation of different individuals. The existing widely used HybridIII series dummies developed in the United States, and the American DOTSID side impact dummy, the European side impact dummy (EuroSID I), and the subsequent frontal impact dummy, side impact dummy and throwing or Tumbling dummies etc. [0003] The existing dummy is designed based on the statistical data of the basic parameters of the human body, and has a basic anthropomorphic structure, such as rigid bones, soft tissue skin, etc., and evaluates the injury of the occupant by testin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 万超侯世杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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