Automobile head-on collision dummy lumbar vertebra calibrator

Abstract

An automobile head-on collision dummy lumbar vertebra calibrator comprises a hydraulic cylinder, a tension sensor, a rigid connector, a connecting assembly and a fixed base, wherein the hydraulic cylinder is connected with the tension sensor, the tension sensor is connected with the connecting assembly slidably by the rigid joint, the bottom of the connecting assembly is fixed with the dummy lumbar vertebra, and the bottom end of the dummy lumbar vertebra is fixedly connected with the fixed base. The automobile head-on collision dummy lumbar vertebra calibrator is simple in structure, low in manufacturing cost and stable in motion, the hydraulic cylinder is used as power output as compared with swing arm collision in lateral-collision dummy lumbar vertebra calibration as power, test accuracy is high, and dynamic performance of the dummy lumbar vertebra can be detected so as to judge whether the dummy can be used for test again or not after several collision tests, so that response accuracy of the dummy in the collision test is guaranteed, and test data is more persuasive. The automobile head-on collision dummy lumbar vertebra calibrator is wide in application range, applicable to calibrating the lumbar vertebra of the Hybrid III 50th male head-on collision dummy and the Hybrid III 5th female head-on collision dummy.

Description

technical field [0001] The invention mainly relates to a frontal collision dummy, in particular to a lumbar calibration device for an automobile frontal collision dummy. Background technique [0002] Due to the danger of crash test, automobile safety crash models, dummies, are used as test tools at home and abroad. The frontal crash test dummy is a precision test instrument made of special materials. [0003] In the crash test, sensors are installed on the head, chest and legs of the dummy to collect data during the test. These data can reflect the effects of physical quantities such as force, displacement, and acceleration on the human body when the car collides. The data acquisition system These data are converted into digital signals and handed over to the computer for processing, and the three index values ​​of HPC (head performance index), ThPC (chest performance index) and FPC (thigh performance index) are calculated, and security analysts use these index values ​​to j...

AI Technical Summary

Problems solved by technology

Taking the calibration specification of the humanoid test device for automobile frontal crash test as an example, it only puts forward calibration requirements for six parts including the head, neck, chest, pelvis, knees, and feet. There are strict specifications, but the influence of the lumbar spine of the dummy is ignored, and there is no calibration requirement for the lumbar spine of the dummy

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