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Wireless Measurement of Rotation and Displacement RateA magnetic field response sensor is designed to measure displacement or rotation rate without a physical connection to a power source, microprocessor, data acquisition equipment, or electrical circuitry. The sensor works with the magnetic field response recorder, which was described in Magnetic-Field-Response Measurement-Acquisition System, NASA Tech Briefs, Vol. 30, No. 6 (June 2006), page 28. These sensors are wirelessly powered and interrogated, and the measurement acquisition system and sensors are extremely lightweight.The response recorder uses oscillating magnetic fields to power the sensors. Once powered, the sensors respond with their own magnetic field. For displacement/ rotation measurements, the response recorder uses the sensor s response amplitude, which is dependent on the distance from the antenna. The recorder s antenna orientation and position are kept fixed, and the sampling period is constant.
Document ID
20100011227
Acquisition Source
Langley Research Center
Document Type
Other - NASA Tech Brief
Authors
Woodard, Stanley E.
(NASA Langley Research Center Hampton, VA, United States)
Taylor, Bryant D.
(Swales Aerospace Hampton, VA, United States)
Date Acquired
August 24, 2013
Publication Date
November 1, 2007
Publication Information
Publication: NASA Tech Briefs, November 2007
Subject Category
Man/System Technology And Life Support
Report/Patent Number
LAR-16848-1
Distribution Limits
Public
Copyright
Public Use Permitted.
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