A Coordinate Measuring Device for Pedestrian Thigh Collision Test

Abstract

The invention provides a coordinate measuring device for a pedestrian's thigh collision test, which belongs to the technical field of measurement. It solves the technical problems that the existing test equipment needs to manually calculate the collision angle according to the coordinates, and then calculate the energy value and velocity value according to the above formula, which is time-consuming and laborious, and the test efficiency is low. The coordinate measuring device includes a first positioning rod, a second positioning rod and a support rod, the upper ends of the first positioning rod and the upper ends of the second positioning rod are movably connected with the supporting rod, and the lower end of the first positioning rod is provided with a A first positioning sensor for position coordinates, and a second positioning sensor for measuring its position coordinates is provided at the lower end of the second positioning rod. The invention reduces the traditional manual calculation and effectively improves the efficiency of the thigh impact test.

Description

technical field [0001] The invention belongs to the technical field of measurement, and relates to a coordinate measuring device used in a collision test of a pedestrian's thigh. Background technique [0002] Euro-NCAP (European New Car Assessment Program) is currently the most influential European new car testing mechanism. In the Euro-NCAP Assessment Protocol for Pedestrain Protection V8.0 version in 2015, a new test procedure was proposed for pedestrian thigh collision, including impact position and capacity calculation. The new test procedure can more objectively evaluate the pedestrian protection thigh of a new car Collision performance. [0003] In the new test method, the impact position of the thigh is determined by the position of the envelope line WAD775mm, and the impact angle α is determined by the connection line between WAD930mm and IBRL (internal bumper reference line bumper internal reference line). The new thigh evaluation adopts the grid point evaluation ...

AI Technical Summary

Problems solved by technology

[0007] In the pedestrian protection real vehicle thigh collision test, according to the selected collision point, it is necessary to use a three-coordinate measuring instrument to measure the point coordinates corresponding to WAD930 and IBRL, and manually calculate the collision angle according to the coordinates connecting the two points, and then according to the above formula Calculating the energy value and speed value is time-consuming and labor-intensive in the actual operation process, and the test efficiency is low

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