Apparatus and method for simultaneously detecting surface pressure and blood volume
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United States of America Patent
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Feb 20, 2018
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N/A
app pub date -
Sep 29, 2017
filing date -
Jan 12, 2015
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Abstract
An apparatus for simultaneously detecting surface pressure and blood volume of an object and a method of detecting the same are provided. The apparatus includes a printed circuit board (PCB); a light emitter disposed on the PCB which emits light of a first wavelength and light of a second wavelength; a first light receiver which detects light of the first wavelength and a second light receiver which detects light of the second wavelength; a transparent elastic body on the PCB which covers the light emitter, the first light receiver, and the second light receiver; and a dichroic coating formed on the transparent elastic body. The dichroic coating reflects light of the first wavelength and transmits light of the second wavelength.
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