Unlock instant, AI-driven research and patent intelligence for your innovation.

Living body detection method and electronic equipment

A technology for electronic equipment and living body detection, which is used in spoofing detection, diagnostic recording/measurement, character and pattern recognition, etc.

Active Publication Date: 2022-03-01
HONOR DEVICE CO LTD
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the aliased signal is in the heart rate frequency band, and the amplitude of the AC component AC satisfies the first amplitude, it will cause the object under test to measure some physiological parameters (such as heart rate), which will misjudge the object under test as a living body
Therefore, the existing living body detection method is inaccurate, and there is a situation of misjudgment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Living body detection method and electronic equipment
  • Living body detection method and electronic equipment
  • Living body detection method and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] In the description of the embodiments of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association of associated objects A relationship means that there may be three kinds of relationships, for example, A and / or B means: A exists alone, A and B exist simultaneously, and B exists alone.

[0060] Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0061] In the embodiments of the present application, words such as "exemplary" or "for example" are used as example...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a living body detection method which can accurately measure that an object to be detected is a living body and can effectively avoid misjudgment, and electronic equipment comprises one or more processors, one or more memories and a light emitter. The method specifically comprises the steps that a light emitter is controlled to emit a first light signal, a second light signal obtained after the first light signal is transmitted or reflected by an object to be detected is detected, the second light signal is converted into a first electric signal, and the first electric signal comprises a first direct-current component and a first alternating-current component. And controlling the illuminator to output a third optical signal, detecting a fourth optical signal obtained after the third optical signal is transmitted or reflected by the object to be detected, and converting the fourth optical signal into a second electric signal which comprises a second direct-current component and a second alternating-current component. When the change of the second direct-current component relative to the first direct-current component is in direct proportion to the change of the second alternating-current component relative to the first alternating-current component, determining that the to-be-detected object is a living body.

Description

technical field [0001] Embodiments of the present invention relate to the field of electronic equipment, and in particular, to a living body detection method and electronic equipment. Background technique [0002] Photoplethysmography (PPG) is to obtain the pulse tracing in an optical way. The usual way is: the light emitted by the LED is irradiated on the object to be measured, and then the light signal is transmitted to the photoelectric through transmission or reflection. Converter (photo-diode, PD). The PD converts the received optical signal into an electrical signal, and sends the electrical signal to the PPG driver chip. The PPG driver chip converts the electrical signal into a PPG digital signal for output through an analog-to-digital converter (ADC). The existing living body detection method is usually that when the direct current component DC in the output PPG digital signal reaches the first direct current component, the amplitude of the alternating current comp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B5/0205A61B5/1455A61B5/00G06V40/12G06V40/16G06V40/70G06V40/40
CPCA61B5/0205A61B5/14551A61B5/14542A61B5/6802A61B5/6803A61B5/681A61B5/6887A61B5/6898A61B5/02416A61B5/02438A61B5/4806
Inventor 王坤李克迪
Owner HONOR DEVICE CO LTD