Taking body temperature, inside out [body temperature monitoring]
Jones, W.D.
This paper appears in: Spectrum, IEEE
Publication Date: Jan. 2006
Volume: 43,
Issue: 1
On page(s): 13- 15
ISSN: 0018-9235
INSPEC Accession Number: 8768064
Digital Object Identifier: 10.1109/MSPEC.2006.1572338
Current Version Published: 2006-01-10
Abstract
Originally developed in the mid-1980s by NASA for monitoring the body temperatures of astronauts on the Space Shuttle, the "radio pill" has now found a new application in the football field. Several pro and college teams have begun issuing these multivitamin-size pills to players who they think might be at risk for heatstroke. Once swallowed, the pill acts as an internal thermometer, providing continuous readings of a player's body temperature, which can be picked up by a sensor placed against the small of the player's back. The radio pill relies on a temperature-sensitive quartz crystal oscillator whose vibration frequencies are well known for temperatures ranging from -60°C to 150°C.
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