Measurement system for ball joint of crash test dummy

摘要

A measurement system is provided for a ball joint of a crash test dummy. The measurement system includes a light source operatively supported by a movable ball of the ball joint and a position sensitive detector operatively supported by a fixed member of the ball joint. The measurement system also includes a controller electrically connected to the light source to provide power to the light source for emitting light and electrically connected to the position sensitive detector that receives the emitted light to measure at least two angles between the ball and the fixed member.