A method, device, storage medium, and electronic product for outputting kinematic parameters.

By constructing an integrated output component, the problem of inaccurate lower limb kinematic parameter analysis in existing technologies has been solved, achieving efficient and accurate data output and supporting injury mechanism analysis and vehicle optimization.

CN121723799BActive Publication Date: 2026-05-26CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
Filing Date
2026-02-26
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies in automotive crash safety simulation lack precise analysis of local kinematic parameters of the lower limbs, especially the capture of key indicators such as knee flexion angle and ligament deformation. Furthermore, data output needs to be processed in different software, resulting in low efficiency.

Method used

An output component composed of mesh cells is constructed, including a motion control area, a gap area, an acceleration output area, and a kinematic output area. Seamless connection is achieved through common node connections, a unified data output format is implemented, focusing on knee joint injury-related parameters, and reasonable material parameter settings are adopted to ensure the accuracy and efficiency of data transmission.

Benefits of technology

It enables precise calculation of lower limb kinematic parameters, reduces operational complexity, improves data processing efficiency, provides targeted support for damage mechanism analysis and vehicle structure optimization, and adapts to different collision simulation scenarios.

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Abstract

This invention provides a method, device, storage medium, and electronic product for outputting kinematic parameters. The method includes: establishing a digital human finite element model; constructing an output component composed of mesh elements; configuring the output component in the femoral condyle region and the tibial plateau region respectively; associating the master node with shared nodes in the motion control area by calculating the displacement of the master node; defining kinematic parameters related to the knee joint injury mechanism based on the finite element node displacements in the kinematic output area; and obtaining the coordinates of finite element feature points before and after the collision through finite element simulation to calculate the kinematic parameters. The beneficial effects of this invention are that it focuses on parameters related to knee joint injury, breaking through the limitations of traditional methods that rely solely on macroscopic indicators, providing targeted support for injury mechanism analysis and injury severity prediction, and contributing to vehicle structure optimization and pedestrian protection development.
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