NASA SBIR 00-1 SOLICITATION

FORM 9B - PROJECT SUMMARY


PROPOSAL NUMBER 00-1 10.02-8599 (Chron: 001402 )
PROJECT TITLE
Astronaut Motion Measurement System (AMMS)



TECHNICAL ABSTRACT (LIMIT 200 WORDS)
In order to study astronaut biomechanics on ISS, a system is needed which can accurately measure the position of various parts of the human body relative to the subjectís workspace with minimal intrusion on the subject and the environment. As with all spaceborne vehicles, ISS has strict restrictions on the electromagnetic environment, as well as mass and power. Disturbances to the crew are also to be avoided, particularly in this case, as disturbing the crew might well affect the data. The proposed Astronaut Motion Measurement System (AMMS) uses a series of small ultrasonic transmitters and receivers to measure the position and motion of astronauts within ISS without disturbing the visual, electromagnetic, or auditory environments. These measurements are accomplished by detecting the time of flight of an ultrasonic "pulse" between known base transceiver locations and transceivers worn by the astronaut. These transceivers are small and unrestrictive, making AMMS ideal for collecting long-term motion data without causing discomfort to the subject or producing erroneous data because the measurement device was cumbersome. Using AMMS, measurements of position can be taken with millimeter-level accuracy at sample rates in the 30Hz range (sample rate and accuracy are dependent on local environment size).



POTENTIAL COMMERCIAL APPLICATIONS
Direct commercial applications of this system include animation/entertainment and terrestrial research. Indirect applications (those associated with the sensor system itself, and not necessarily with the specific configuration addressed here for human subjects) include automation systems, planetary exploration and site setup, and other local area tracking applications.



NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR (Name, Organization Name, Mail Address, City/State/Zip)
Julianne Zimmerman
Payload Systems Inc.
247 Third Street
Cambridge , MA   02142 - 1129



NAME AND ADDRESS OF OFFEROR (Firm Name, Mail Address, City/State/Zip)
Payload Systems Inc.
247 Third Street
Cambridge , MA   02142 - 1129