US 6,982,409 B2
Measurement system for ball joint of crash test dummy
Yue Huang, Novi, Mich. (US); Eric J. Stanley, Wayne, Mich. (US); and Ali M. Elhagediab, Dearborn, Mich. (US)
Assigned to First Technology Safety Systems, Inc., Plymouth, Mich. (US)
Filed on Feb. 21, 2003, as Appl. No. 10/371,442.
Claims priority of provisional application 60/358470, filed on Feb. 21, 2002.
Prior Publication US 2004/0099825 A1, May 27, 2004
Int. Cl. G06M 7/00 (2006.01)
U.S. Cl. 250—221 20 Claims
OG exemplary drawing
 
1. A measurement system for a ball joint of a crash test dummy comprising:
a light source operatively supported by a movable ball of the ball joint;
a position sensitive detector operatively supported by a fixed member of the ball joint; and
a controller electrically connected to said light source to provide power to said light source for emitting light and electrically connected to said position sensitive detector that receives the emitted light to measure at least two angles between the ball and the fixed member.