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Photoplethysmograph (PPG) and terminal

A photoplethysmography and terminal technology, which is applied in the fields of sensors, diagnostic recording/measurement, medical science, etc., and can solve the problems of photoplethysmography device light channeling, etc.

Active Publication Date: 2019-11-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a photoplethysmograph and a terminal, which can solve the problem of light channeling inside the photoplethysmograph while ensuring the accuracy of heart rate measurement

Method used

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  • Photoplethysmograph (PPG) and terminal
  • Photoplethysmograph (PPG) and terminal
  • Photoplethysmograph (PPG) and terminal

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Among them, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0037] In order to facilitate the understanding of the photoplethysmograph provided by the embodiment of the present application, the application scenario of the photoplethysmograph will be described first below. The photoplethysmograph can be applied to terminals, such as mobile phones, tablet computers, digital ca...

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Abstract

An embodiment of the invention discloses a photoplethysmograph (PPG) and a terminal. The PPG comprises a shell, a cover plate, an optical device for emitting light rays outwards as well as photoelectric sensors for receiving external optical signals; the shell and the cover plate define a closed space, and the optical device and the photoelectric sensors are accommodated in the closed space; the cover plate comprises a first area for the optical device to emit light rays outwards and a second area for the photoelectric sensors to receive external optical signals; and the cover plate further comprises a third area, and a shielding structure is arranged on the third area and used for isolating light rays between the optical device and the photoelectric sensors. By arrangement of the shielding structure in the third area, the PPG improves the isolation between the optical device and the photoelectric sensors, avoids light leakage between the optical device and the photoelectric sensors, improves measurement accuracy of the photoelectric sensors and improves user experience.

Description

technical field [0001] The embodiments of the present application relate to the technical field of smart terminals, and in particular, to a photoplethysmograph and a terminal. Background technique [0002] Photoplethysmograph can use photoplethysmography (photoplethysmograph, referred to as PPG) technology to detect the heart rate of human exercise. The heart rate is calculated from the obtained pulse waveform. It is an application of infrared non-destructive testing technology in biomedicine. [0003] The photoplethysmograph is provided in the existing smart watch or bracelet, and the photoplethysmograph can be used for heart rate detection. The photoplethysmograph includes an optical device and a photoelectric sensor, and can emit light to the human body through the optical device. And through the photoelectric sensor to detect the reflected light absorbed by human blood and tissue to detect the change of the wearer's heart rate. [0004] However, the light emitted by t...

Claims

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Application Information

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IPC IPC(8): A61B5/024
CPCA61B5/02416A61B5/02427A61B5/02438A61B5/02422A61B5/681A61B2562/185
Inventor 杨荣广席毅孙士友郭智张斌
Owner HUAWEI TECH CO LTD
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