Patent ID: 9675259
Date: 2017-06-13
CPC Classifications: A61B,H04R

Claim:
1. A physiological function detecting earphone, comprising: an earphone body; an earplug mounted at one side of the earphone body, at least one window being opened through the earplug; a light processing module including an inner ring spacer, at least one light sensing module disposed on one end face of the inner ring spacer and facing to the at least one window of the earplug, and a signal amplifier and an analog-to-digital (A/D) converter which are disposed on the inner ring spacer and coupled with the at least one light sensing module that includes a visible light source for emitting at least one wavelength of light through the at least one window of the earplug, and a light sensor for sensing reflected light changes by the wall of an ear canal of a participant, the signal amplifier and the A/D converter processing the reflected light changes to get photoplethysmography (PPG) signals; and a signal processing module coupled with the signal amplifier and the A/D converter via the inner ring spacer for receiving and processing the PPG signals to obtain the physiological function including at least one of heart rate, heart rate variability (HRV), and degree of blood oxygen saturation of the participant; wherein the one side of the earphone body defines a first sound hole of which a circumferentia perpendicularly extends sideward to form a holder, at least one opening is opened through an inside, an outside and a free edge of the holder, a holding frame has a cover board covering an end mouth of the holder, a periphery of the cover board perpendicularly extends to form at least one inserting board made of a material pervious to light and inserted in the at least one opening of the holder, the at least one light sensing module together with a part of the inner ring spacer is located in the holder and faces to the at least one inserting board, the earplug is mounted outside the holder, and the holding frame with the at least one inserting board is exposed through the at least one window; and wherein the earplug is made of a lightproof material and has a sleeve worn around the holder and the holding frame, an outer edge of the sleeve extends towards the earphone body to form a substantially bowl-shaped guiding portion, and the at least one window includes a first window and a second window which are in alignment with each other and opened in the sleeve and the guiding portion respectively.