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Blood flow measurement device

A blood flow measurement and equipment technology, applied in the field of blood flow measurement equipment, can solve the problem of short average frequency sampling interval

Pending Publication Date: 2021-10-01
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this reflected light signal data contains a lot of noise due to the short sampling interval used to calculate the average frequency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0037] 1. According to the first embodiment of the present technology (basic configuration)

[0038] 2. According to the second embodiment of the present technology (configuration of a plurality of groups)

no. 3 example

[0039] 3. Third Embodiment of Present Technology (Arrangement in Two-Dimensional Direction)

[0040] 1. According to the first embodiment of the present technology (basic configuration)

[0041] (1 Overview

[0042] figure 1 is a configuration diagram of the blood flow measurement device according to the first embodiment of the present technology. Such as figure 1 As shown in , the blood flow measuring device 100 is provided with at least one light source unit 10, multiple light receiving units (20-1, 20-2, 20-3), multiple signal processing units (20-1, 20-1, 20-2, 20-3, 30-1, 30-2, 30-3), at least one multiplexing unit 40 and at least one AD conversion unit 50. The light receiving unit (20-1, 20-2, 20-3), the signal processing unit (30-1, 30-2, 30-3), the multiplexing unit 40, and the AD conversion unit 50 are electrically connected to each other.

[0043] Please be aware of, figure 1 The configuration diagram of an embodiment of the blood flow measuring device 100 incl...

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Abstract

Provided is a blood flow measurement device that is provided with at least one AD conversion unit and processes a plurality of reflection light signals. The blood flow measurement device is provided with at least one light source unit, a plurality of light receiving units, a plurality of signal processing units, at least one multiplexing unit, and at least one AD conversion unit. The light source unit emits coherent light to a living body. Each of the plurality of light receiving units receives reflection light of the coherent light and converts the intensity of the reflection light into a current signal. Each of the plurality of signal processing units converts the current signal into a voltage signal. The multiplexing unit multiplexes a plurality of voltage signals into at least one multiplexed voltage signal. The AD conversion unit samples the multiplexed voltage signal and acquires a multiplexed digital signal.

Description

technical field [0001] The technology relates to a blood flow measuring device. Background technique [0002] Conventionally, a technique of irradiating the skin of a living body with a laser beam or the like close to coherent light to measure the blood flow of blood vessels near the skin surface in a non-invasive manner has been employed. This technique exploits the Doppler effect, in which the frequency of the reflected light signal changes according to how fast the object is moving. It is known that the blood flow velocity associated with the average frequency can be calculated by calculating the average frequency from the frequency distribution of this reflected light signal. [0003] However, this reflected light signal data contains a lot of noise due to the short sampling interval used to calculate the average frequency. Therefore, in order to obtain a low-noise signal, Patent Documents 1 and 2 disclose techniques of performing averaging processing on a plurality of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/026
CPCA61B5/0261A61B5/7225A61B5/02007A61B5/0082A61B5/026
Inventor 伊藤敦史
Owner SONY CORP