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Blood flow analysis device and biological information analysis system

A technology for biological information and blood flow analysis, which is applied in the fields of blood flow analysis devices and biological information analysis systems, and can solve problems such as inability to obtain information.

Pending Publication Date: 2022-08-05
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in this document, since the peak time of the pulse and heartbeat is detected, information cannot be obtained unless the time is necessarily longer than the cycle of the pulse or heartbeat.

Method used

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  • Blood flow analysis device and biological information analysis system
  • Blood flow analysis device and biological information analysis system
  • Blood flow analysis device and biological information analysis system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0038]

[0039] The blood flow analyzer 1 according to the present embodiment measures the blood flow distribution based on the image acquired in a non-contact manner, compares the blood flow between different measurement areas using the blood flow distribution, and compares the blood flow in the different measurement areas. The correlation between the simultaneously generated blood flow was analyzed. Thereby, blood flow can be measured in a short time, and various information related to blood flow can be obtained.

[0040] The blood flow analyzer 1 of the present embodiment detects a state change of the blood flow distribution in a time shorter than the pulse cycle. As a result, various kinds of information other than the pulse related to blood flow can be obtained in a shorter time than the pulse.

Embodiment approach 2

[0042] figure 2 It is a block diagram of the biological information analysis system 2 which concerns on Embodiment 2 of this invention. The biological information analysis system 2 is a system for estimating the state of the subject using information about the blood flow distribution analyzed by the blood flow analysis device 1 . The biological information analysis system 2 includes a state estimation unit 16 , a signal output unit 17 , and a display unit 18 in addition to the blood flow analysis device 1 . The result output by the signal output unit 15 is sent to the state estimation unit 16 .

[0043] The state estimating unit 16 includes at least one database that stores an index for judging the result received from the signal output unit 15 . The database records at least information related to the type of evaluation and the boundary of the judgment. In the case of a small number and a low update frequency and no management is required, a data table that is simply reco...

Embodiment approach 3

[0077]

[0078] In the biological information analysis system 2 according to the third embodiment, the subject tracking unit 122 tracks the subject, or the face tracking unit 123 tracks the face part of the subject, so that images required for blood flow distribution analysis can be limited. information. Thereby, the analysis load of the blood flow distribution can be reduced, so that the state change of the blood flow distribution can be detected in a short time.

[0079]

[0080] Embodiment 4 of the present invention will describe a configuration example in which the state of a person is estimated in more detail based on a plurality of different data using learning data received from outside the blood flow analysis device 100 .

[0081] Figure 10 This is a configuration diagram of the biological information analysis system 2 according to the fourth embodiment. In the fourth embodiment, the state estimation unit 16 includes a DB update unit 164 and a learning unit 165 ...

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Abstract

The invention provides a blood flow analysis device and a biological information analysis system, which can estimate the state of a person at a high speed and obtain various kinds of information without applying a measurement load on the person to be tested. This blood flow analyzer detects a blood flow distribution using a visible light image, compares blood flows between different measurement regions using the blood flow distribution, and analyzes the correlation between blood flows simultaneously generated in the different measurement regions.

Description

technical field [0001] The present invention relates to an apparatus for analyzing the blood flow distribution of a subject. Background technique [0002] There is a technique of extracting minute changes in blood color from a series of images obtained by photographing human tissue, and detecting state changes related to blood flow. This technology is realized by detecting the optical properties of a living body that changes due to blood flow from a captured image. [0003] As an example of such a technique, there is Patent Document 1, for example. Patent Document 1 has the subject of "measurement of blood pressure by a non-contact method", and describes the following technology (refer to the abstract): "It includes: an image acquisition unit that acquires a skin image of the user's skin; a pulse wave timing calculation unit that uses the skin image, calculates the time change of the brightness in the skin image, and calculates the time information indicating the time when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/026
CPCA61B5/0261A61B5/0077A61B5/02125A61B5/02116
Inventor 村田诚治松田孝弘大内敏
Owner HITACHI LTD