Electronic Device Blood Flow Measurement via Video Pulse Wave Analysis
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Solution Overview
Problem
Existing technologies fail to accurately measure blood flow variation before and after specific actions, such as massages, due to limitations in capturing and analyzing video data to provide a clear visual representation of changes in blood circulation.
Innovation Solution
An electronic device equipped with a camera and processing units that capture and analyze video data to acquire pulse wave information from multiple body parts, calculating a blood flow increase index by comparing changes in luminance before and after an event, and displaying the results as a hue moving image to visually represent blood flow variation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pulse wave information is acquired from multiple body parts to measure blood flow changes, then measurement precision is improved, but device complexity increases due to the need to capture and process video data from multiple regions
Solution Approach 1:
The patent divides the body into multiple measurement portions (first portion and second portion) and processes video data from each portion separately to extract pulse wave information. This segmentation allows accurate comparison of blood flow changes between different body regions while using a single camera system, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The patent introduces a control device as an intermediary that coordinates the imaging device and processes the video data. The control device extracts pulse wave information from video frames of multiple body portions and calculates blood flow changes, simplifying the overall system architecture while maintaining high measurement precision through centralized processing.
2Loss of information
If video data is captured before and after specific actions to visualize blood circulation changes, then information completeness is improved, but loss of time increases due to the need for multiple video acquisitions
Solution Approach 1:
The patent performs video acquisition before the specific action (pre-measurement) to establish a baseline blood flow state. By capturing video data of multiple body portions before the action occurs, the system prepares reference information that enables accurate comparison with post-action measurements, reducing the need for repeated acquisitions and minimizing time loss.
Solution Approach 2:
The patent implements continuous video monitoring of multiple body portions throughout the measurement process, from pre-action to post-action states. This continuous acquisition ensures that blood flow variations are captured without interruption, providing complete information while optimizing the measurement timeline through parallel processing of multiple body regions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively measures and visually displays blood flow changes, allowing for intuitive understanding of circulation improvements after actions like massages, while minimizing the influence of unrelated changes in the overall blood flow.
Implementation Method 1
acquiring, based on video information of a body in a first video obtained by imaging at least a part of the body, pulse wave information indicating a pulse wave of a first portion of the body
Data Source
AI summary
An electronic device acquires pulse wave information indicating a pulse wave of a first portion of a body and pulse wave information indicating a pulse wave of a second portion of the body, based on video information of the body in each of a first video and a second video obtained by imaging the body. The device further acquires, based on a relationship between the pulse wave information of the first portion and the pulse wave information of the second portion acquired from the first video, and a relationship between the pulse wave information of the first portion and the pulse wave information of the second portion acquired from the second video, a measurement result indicating a degree of change in blood flow from when imaging the first video to when imaging the second video.