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1. WO2020114448 - PHOTOPLETHYSMOGRAPHY SIGNAL FEATURE POINT DETECTING METHOD AND DEVICE

Publication Number WO/2020/114448
Publication Date 11.06.2020
International Application No. PCT/CN2019/123252
International Filing Date 05.12.2019
IPC
A61B 5/024 2006.01
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
024Measuring pulse rate or heart rate
CPC
A61B 5/02416
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording 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
024Detecting, measuring or recording pulse rate or heart rate
02416using photoplethysmograph signals, e.g. generated by infra-red radiation
A61B 5/7203
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7203for noise prevention, reduction or removal
A61B 5/7225
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7225Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
A61B 5/7235
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7235Details of waveform analysis
A61B 5/725
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7235Details of waveform analysis
725using specific filters therefor, e.g. Kalman or adaptive filters
Applicants
  • 深圳先进技术研究院 SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY [CN]/[CN]
Inventors
  • 李烨 LI, Ye
  • 刘增丁 LIU, Zengding
  • 苗芬 MIAO, Fen
  • 刘记奎 LIU, Jikui
  • 闻博 WEN, Bo
Agents
  • 深圳市科进知识产权代理事务所(普通合伙) SHENZHEN KEJIN INTELLECTUAL PROPERTY OFFICE
Priority Data
201811496886.807.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PHOTOPLETHYSMOGRAPHY SIGNAL FEATURE POINT DETECTING METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF DE DÉTECTION DE POINT CARACTÉRISTIQUE DE SIGNAL DE PHOTOPLÉTHYSMOGRAPHIE
(ZH) 一种光电容积脉搏波信号特征点检测方法及装置
Abstract
(EN)
A photoplethysmography signal feature point detecting method and device, relating to the technical field of biomedical signal processing. The method and the device relate to: preprocessing an original photoplethysmography signal to obtain a first photoplethysmography signal and a second photoplethysmography signal (S301); calculating a fundamental frequency value of the original photoplethysmography signal according to the first photoplethysmography signal (S302); then performing segment amplitude normalization processing on the second photoplethysmography signal by using the fundamental frequency value, to obtain a normalization signal (S303); and accordingly, determining a feature point of the original photoplethysmography signal according to the normalization signal (S304). Segment amplitude normalization processing is performed on the second photoplethysmography signal by means of the fundamental frequency value, so as to consolidate and highlight the position of the original photoplethysmography signal in the normalization signal, thereby improving the accuracy of wave trough and wave peak feature detection for an original photoplethysmography F-wave signal.
(FR)
La présente invention concerne un procédé et un dispositif de détection de point caractéristique de signal de photopléthysmographie, se rapportant au domaine technique du traitement de signaux biomédicaux. Le procédé et le dispositif concernent : le prétraitement d'un signal initial de photopléthysmographie pour obtenir un premier signal de photopléthysmographie et un deuxième signal de photopléthysmographie (S301) ; le calcul d'une valeur de fréquence fondamentale du signal initial de photopléthysmographie selon le premier signal de photopléthysmographie (S302) ; la réalisation d'un traitement de normalisation d'amplitude de segment sur le deuxième signal de photopléthysmographie à l'aide de la valeur de fréquence fondamentale, afin d'obtenir un signal de normalisation (S303) ; et, par conséquent, la détermination d'un point caractéristique du signal initial de photopléthysmographie selon le signal de normalisation (S304). Un traitement de normalisation d'amplitude de segment est réalisé sur le deuxième signal de photopléthysmographie au moyen de la valeur de fréquence fondamentale, de façon à consolider et à mettre en évidence la position du signal initial de photopléthysmographie dans le signal de normalisation, ce qui permet d'améliorer la précision de détection de caractéristique de creux et de pic d'onde pour un signal initial d'onde F de photopléthysmographie.
(ZH)
一种光电容积脉搏波信号特征点检测方法及装置,涉及生物医学信号处理技术领域。该方法及装置通过对原始光电容积脉搏波信号进行预处理以获取第一光电容积脉搏波信号及第二光电容积脉搏波信号(S301),根据第一光电容积脉搏波信号计算原始光电容积脉搏波信号的基频值(S302),然后利用基频值对第二光电容积脉搏波信号进行分段幅值归一化处理,获得归一化信号(S303),从而根据归一化信号确定原始光电容积脉搏波信号的特征点(S304)。通过基频值对第二光电容积脉搏波信号进行分段幅值归一化处理,以增强和凸显原始光电容积脉搏波信号在归一化信号中的位置,提高了原始光电容积脉搏F波信号波谷和波峰特征检测的准确度。
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