Method and device for generating photoplethysmography signal

A light volume and signal technology, which is applied in the direction of using light for diagnosis, diagnostic recording/measurement, medical science, etc. It can solve the problems of rigid collection devices and methods, and increase the difficulty of PPG signal data acquisition.

Active Publication Date: 2020-06-19
LEPU MEDICAL TECH (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, we found that the current PPG signal acquisition devices and methods are relatively rigid: the irradiation light source only uses a single red light or infrared light, and the most common front-end acquisition refe

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  • Method and device for generating photoplethysmography signal
  • Method and device for generating photoplethysmography signal
  • Method and device for generating photoplethysmography signal

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Embodiment Construction

[0067] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] Before describing an example, a brief description of the implementation technology of the embodiment of the present invention is given as follows.

[0069] Conventional PPG signal acquisition is to use a specific light source to irradiate the skin surface, and then use a specific light source to receive the light signal reflected or transmitted by the skin surface; the analysis module of the sensor will make statistics on the light i...

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Abstract

The embodiment of the invention relates to a method and device for generating a photoplethysmography signal. The method comprises the following steps: according to a preset red light pixel threshold range, sequentially carrying out single-frame red and green channel data calculation on all skin surface video data frame images of a skin surface video data frame image sequence to generate first redand green light digital signals; carrying out signal band-pass filtering on the first red and green light digital signals to generate second red and green light digital signals; acquiring a signal judgment identifier; judging whether to carry out signal maximum frequency difference judgment processing on the second red light digital signal and the second green light digital signal according to thesignal judgment identifier and generating a first judgment result; when the first judgment result is an up-to-standard signal identifier, performing signal-to-noise ratio judgment on the second red and/or green light digital signals to generate a second judgment result; and generating a PPG signal when the second judgment result is an up-to-standard signal identifier.

Description

technical field [0001] The invention relates to the technical field of electrophysiological signal processing, in particular to a method and device for generating a photoplethysmography signal. Background technique [0002] Factors such as the current health status, hormone level, emotional state and even lifestyle of the human body will affect the working status of the heart. Conversely, by analyzing the trajectory of the heart movement, the health and disease status information of the human body can also be learned in reverse. To obtain the trajectory data of the heart movement, it is necessary to monitor and collect the data of the heart movement, which is traditionally accomplished by using an electrocardiogram (ECG) monitoring technology. This method needs to connect the lead electrodes to multiple parts of the body to collect ECG signals. During the specific operation, the monitored object needs to lie still or wear a variety of contact devices (heart stickers, heart b...

Claims

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Application Information

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IPC IPC(8): A61B5/02
CPCA61B5/02A61B5/0059A61B5/7225A61B5/7203A61B5/02416A61B5/0077
Inventor 吴泽剑曹君
Owner LEPU MEDICAL TECH (BEIJING) CO LTD
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