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Simply a finger ring with built-in photoplethysmographic measurement display capability.
Like a mood ring, but with either numeric, scalar (thermometer-like) or color display of heart rate.
The basic technology has been available since the early 1970s [link.] I built a version of the referenced
device when I was about 14.
Possible applications: Medical, entertainment, romance, psychotherapy, ...
[Other non-invasive physiological measurements encorporated by reference: pulmonary function, blood pressure, sexual arousal, perspiration, et al.]
Popular Electronics project
http://dischercreat...ts/articles/ppg.pdf
Easily constructed photoplethysmographic sensor [csea, May 22 2011]
More "photo" than "plethysmo"
http://en.wikipedia...wiki/Pulse_oximetry
[mouseposture, May 22 2011]
Advanced Mood Ring
[xaviergisz, May 24 2011]
Pulse Ring
[xaviergisz, May 24 2011]
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Annotation:
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Why plethysmography? <link> |
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Looks like this is pretty similar to [links]. Will delete
eventually unless I decide not to <consults ring.> |
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