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1. CN103908236 - Automatic blood pressure measuring system

Office
China
Application Number 201410149101.5
Application Date 14.04.2014
Publication Number 103908236
Publication Date 09.07.2014
Grant Number 103908236
Grant Date 01.06.2016
Publication Kind B
IPC
A61B 5/021
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
02Measuring pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography; Heart catheters for measuring blood pressure
021Measuring pressure in heart or blood vessels
CPC
A61B 5/0064
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
0059using light, e.g. diagnosis by transillumination, diascopy, fluorescence
0062Arrangements for scanning
0064Body surface scanning
A61B 5/0077
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
0059using light, e.g. diagnosis by transillumination, diascopy, fluorescence
0077Devices for viewing the surface of the body, e.g. camera, magnifying lens
A61B 5/02108
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
021Measuring pressure in heart or blood vessels
02108from analysis of pulse wave characteristics
A61B 5/02125
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
021Measuring pressure in heart or blood vessels
02108from analysis of pulse wave characteristics
02125of pulse wave propagation time
A61B 5/7203
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7203for noise prevention, reduction or removal
A61B 5/7235
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7235Details of waveform analysis
Applicants 天津点康科技有限公司
Inventors 欧阳健飞
姚丽峰
Agents 中科专利商标代理有限责任公司 11021
Title
(EN) Automatic blood pressure measuring system
(ZH) 一种自动血压测量系统
Abstract
(EN)
The invention discloses a non-contact type automatic blood pressure measuring system. Blood pressure of a measured person is measured by video recording. The non-contact type automatic blood pressure measuring system comprises a video acquiring module, an ROI extracting module, a pulse wave signal generating module, a filtering and noise reduction module, a waveform analyzing module and a blood pressure value calculating module. An automatic blood pressure measuring method comprises the following steps of acquiring a video of a finger tip; positioning the position of a tracked finger by using contour tracing of the finger tip; acquiring images of the finger; performing primary color separation and ROI segmentation on the images of the finger; respectively taking all pixel mean values of the filtered images as feature values to generate two time-varying pulse wave signal waveforms; performing comparison analysis on the two pulse wave waveforms to obtain transmission time of pulse; calculating the wave velocity of the pulse waves along an artery according to an image center distance d; and calculating a blood pressure value by using a conversion relation between pulse wave velocity and blood pressure. By using a noninvasive and non-contact type remote physiological signal detecting method, interference of motion artifact in a video record is overcome, the measuring precision is high, and blood pressure of a plurality of persons can be measured simultaneously.

(ZH)

本发明公开了一种非接触式自动血压测量系统,采用视频拍摄进行被测者血压测量,包括视频采集模块,ROI提取模块,脉搏波信号生成模块、滤波去噪模块,波形分析模块以及血压值计算模块。采集指端的视频;利用指端的轮廓跟踪来定位跟踪手指的位置,并获取手指图像,进行基色分离和ROI分割;将滤波后的每帧图像,分别取所有像素均值作为特征值,生成两个时变的脉搏波信号波形;将两个脉搏波的波形进行比对分析,得到脉搏的传播时间;根据图像中心距离d计算出脉搏波沿动脉波速,利用脉搏波速与血压之间的换算关系计算出血压值。本发明采用无创、非接触式远程检测生理信号方法,克服了视频记录中运动伪影影响,测量精度高,能同时进行多人测量。