Biological feature detection apparatus and electronic terminal

Patent metadata

Field	Value
Publication number	US-11304615-B2
Application number	US-201816151314-A
Country	US
Kind code	B2
Filing date	Oct 3, 2018
Priority date	Jun 30, 2017
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

Embodiments of the present application provide a biological feature detection apparatus. The detection apparatus includes: a light emitting unit and a light receiving unit. The light emitting unit is configured to emit light to a detection surface of a biological tissue, the light emitted by the light emitting unit being processed by the biological tissue and then transmitted to the light receiving unit, the light receiving unit is configured to receive the light and perform a photoelectric conversion to generate an original electrical signal for biological feature detection, and at least one of the adjustable relative position and relative angle is defined between the light emitting unit and the light receiving unit. As such, accurate monitoring of the biological feature is achieved.

First claim

What is claimed is:

1. A biological feature detection apparatus, comprising:
a light emitting unit and a light receiving unit, wherein the light emitting unit is configured to emit light to a detection surface of an ear, the light emitted by the light emitting unit is processed by the ear and then transmitted to the light receiving unit, the light receiving unit is configured to receive the light and perform a photoelectric conversion to generate an original electrical signal for biological feature detection, and the light emitting unit and light receiving unit are in close proximity and insertable in the ear;
a first substrate, a second substrate and a flexible member, wherein the light emitting unit is arranged on the first substrate, the light receiving unit is arranged on the second substrate, the first substrate and the second substrate are connected via the flexible member, and the flexible member is configured to permit adjustment of a relative position and a relative angle between the light emitting unit and the light receiving unit;
an optical shielding unit and a light guiding unit, wherein the light guiding unit is configured to form enclosures around the light emitting unit and the light receiving unit, and the optical shielding unit is configured to form enclosures around the light emitting unit and the light receiving unit such that the light guiding unit is configured to guide the light emitted by the light emitting unit to the detection surface of the ear and guide the light being processed by the ear to the light receiving unit, and the optical shielding unit is configured to shield or absorb the light emitted by the light emitting unit to prevent the light emitted by the light emitting unit from being directly transmitted to the light receiving unit without being processed by the ear.

2. The biological feature detection apparatus according to claim 1 , wherein the flexible member is connected to the first substrate and the second substrate respectively via a solder pad or a plug.

3. The biological feature detection apparatus according to claim 1 , wherein the first substrate and the second substrate have multilayer structures respectively; and at least one end of the flexible member is embedded into the multilayer structures of the first substrate or the second substrate to be connected to the first substrate or the second substrate respectively.

4. The biological feature detection apparatus according to claim 1 , wherein the first substrate and the second substrate have multilayer structures respectively; wherein any layer in the multilayer structure of the first substrate is made of a flexible material and extends outside to the second substrate and connected to any layer in the multilayer structure of the second substrate; or any layer in the multilayer structure of the second substrate is made of a flexible material and extends outside to the first substrate and connected to any layer in the multilayer structure of the first substrate, and the flexible member comprises the flexible material and its extension.

5. The biological feature detection apparatus according to claim 1 , wherein the detection apparatus comprises both the optical shielding unit and the light guiding unit, and the optical shielding unit and the light guiding unit are integrally arranged, or the optical shielding unit and the light guiding unit are separately arranged.

6. The biological feature detection apparatus according to claim 1 , wherein the light emitting unit and the light receiving unit are both provided with the light guiding unit; wherein the light guiding unit on the light emitting unit and the light guiding unit on the light receiving unit are integrally arranged or separately arranged.

7. The biological feature detection apparatus according to claim 1 , further comprising a processing circuit and a control circuit, wherein:
the processing circuit is configured to perform an analog-to-digital conversion for the original electrical signal to generate a digital signal and filter the digital signal; and
the control circuit is configured to control the light emitting unit to emit light to the ear.

8. The biological feature detection apparatus according to claim 1 , further comprising a processor; wherein the processor is configured to perform biological feature detection based on the original electrical signal.

9. The biological feature detection apparatus according to claim 1 , wherein the relative position is a linear distance between a geometric center of the light emitting unit and a geometric center of the light receiving unit, and the relative angle is a normal angle between a planar surface of the light emitting unit and a planar surface of the light receiving unit.

10. The biological feature detection apparatus according to claim 1 , wherein the biological feature is a heart rate feature or a blood oxygen feature based on a photoplethysmogram signal.

11. The biological feature detection apparatus according to claim 1 , wherein the light receiving unit and the light emitting unit are attached to a tragus inner-side region of the ear the light receiving unit and the light emitting unit are located in a concha cavity of the ear; or the light receiving unit and the light emitting unit are located in a region enclosed by a crus of helix of the ear, an ear canal entrance and a antihelix close to an antitragus of the ear.

12. The biological feature detection apparatus according to claim 11 , wherein:
when the light receiving unit is attached to the tragus inner-side region, the light emitting unit is located in an underneath connection region between an intertragic notch and an outer ear canal entrance; or
when the light emitting unit is attached to the tragus inner-side region, the light receiving unit is located in an underneath connection region between an intertragic notch and an outer ear canal entrance.

13. The biological feature detection apparatus according to claim 11 , further comprising a wearing assistance mechanism; wherein the light receiving unit and the light emitting unit are arranged on the wearing assistance mechanism, such that the light receiving unit and the light emitting unit are arranged in the region between the inferior crus of antihelix and the crus of helix or in the region between the antihelix and the crus of helix.

14. The biological feature detection apparatus according to claim 1 , further comprising an elastic unit; wherein, during biological feature detection, the elastic unit is configured to enable the light emitting and/or the light receiving unit to be tightly attached to the ear.

15. The biological feature detection apparatus according to claim 1 , wherein the light guiding unit has a surface shape conformed to a shape of the detection surface of the ear.

16. The biological feature detection apparatus according to claim 1 , wherein the light shielding unit has a surface shape conformed to a shape of the detection surface of the ear.

17. An electronic terminal, comprising a biological feature detection apparatus, wherein the biological feature detection apparatus comprising:
a light emitting unit and a light receiving unit, wherein the light emitting unit is configured to emit light to a detection surface of an ear, the light emitted by the light emitting unit is processed by the ear and then transmitted to the light receiving unit, and the light receiving unit is configured to receive the light and perform a photoelectric conversion to generate an original electrical signal for biological feature detection,
a first substrate, a second substrate

Assignees

• Shenzhen Goodix Tech Co Ltd

Inventors

• Yang Wangwang

Classifications

• A61B5/6817

  Ear canal · CPC title

• A61B5/02427 Primary

  Details of sensor · CPC title

• A61B2562/166

  the sensor is mounted on a specially adapted printed circuit board · CPC title

• A61B5/02416

  using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence) · CPC title

• A61B5/6803

  Head-worn items, e.g. helmets, masks, headphones or goggles · CPC title