The Development of a System Using Triaxial Accelerometers to Measure Head Motion and Energy Exposure During High Velocity Vehicular Impact

Kelly A.Cohn, R.N., M.S.

The Miami Project to Cure Paralysis

P.O. Box 016960, Mail Locator R-48

Miami, FL 33101

Ted Knox, Ph.D.

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Re the ear sensors - just about ready to go.

We will be placing a tri-ax in each "rubber" ear mounted on a manikin head and subjecting the head with and without the helmet to accelerations in x,y,z and rotations about x,y,z (Rx,Ry,Rz) at levels from 10G to 125G using our Vertical Impact Device.

Next we'll piggy back the earplugs on some human testing going on our drop tower. The subjects are male and females from about 5ft/105lbs to 6ft5in/ 250lbs+. They will all have full anthropometry and CTs of their necks. We're also setting up to try the ear plugs in cars, amusement rides and on the horizontal sled using race car tubs/seats. We have received tubs from Barber Dodge, Brock Walker and a Sprint car owner.

Chips have arrived so SPEC can begin assembling the little 19 ch recorders we plan to use latter this summer. I think the final design will include some upgrades but these first ten units will be the original design.

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