CN108742628A - A kind of breathing detection method - Google Patents

A kind of breathing detection method Download PDF

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Publication number
CN108742628A
CN108742628A CN201810600786.9A CN201810600786A CN108742628A CN 108742628 A CN108742628 A CN 108742628A CN 201810600786 A CN201810600786 A CN 201810600786A CN 108742628 A CN108742628 A CN 108742628A
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breathing
data
condition
flows
expiration
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CN108742628B (en
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蒋莉
李群
姜森
林海叶
林若旷
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Jiangsu Hanya Medical Technology Co.,Ltd.
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NANJING HANYA HEALTH SCIENCE and TECHNOLOGY Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/08Detecting, measuring or recording devices for evaluating the respiratory organs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/08Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0816Measuring devices for examining respiratory frequency
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/08Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/082Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/08Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/087Measuring breath flow
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/08Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/091Measuring volume of inspired or expired gases, e.g. to determine lung capacity

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pulmonology (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Physiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The present invention provides a kind of breathing detection method, by the data on flows processing to acquisition, calculates breathing index point, including:Whether cycle criterion current point meets delayed data condition to test point;Judge whether test point meets zero crossing condition;Judge whether test point meets suction condition or breathing condition;Alternately record air-breathing index point and expiration index point.Complexity of the present invention is low, and performance is good, can be used for preserving breathing index point in real time, reduces operating personnel's burden;Error in data caused by effectively preventing feeble respiration to fluctuate;It is mutually constrained in conjunction with suction condition or expiration condition judgment, the two, more accurately calculates the index point of air-breathing and expiration.

Description

A kind of breathing detection method
Technical field
The invention belongs to breathing detection technical fields, and in particular to a kind of breathing detection method.
Background technology
As cardiopulmonary exercise test is in the application of the clinical functions such as breathing, cycle, metabolism, nerve, human body respiration detection side Method becomes more and more important.Human body respiration detects, and is under being acquired from quiescent condition to motion state by cardiopulmonary measuring device Respiratory wave signal, the index point of detection breathing in real time, calculates respiratory characteristic parameter, largely related to patient to enable the clinician to obtain Important information improve efficiency and diagnostic accuracy convenient for diagnosis.The method of breathing detection mainly uses extreme value currently on the market Method and zero-crossing method, extremum method need to judge wave crest or trough in conjunction with threshold condition, when there is baseline drift in waveform, anti-interference energy Respiration can not be accurately positioned in force difference.Zero-crossing method calculates respiration by judging the positive and negative values of air-breathing and expiration, when When occurring faint fluctuation in respiration, easily it is judged as repeatedly breathing.
Patent 201711232535.1 discloses a kind of heart rate and respiratory rate data processing method, according to human body physical sign number According to the characteristics of extraction sampled signal time domain and frequency domain character reconstruction signal waveform and repaiied by continuous waveform fitting mode Just, include the following steps:1) it allows the data in a sampling period to carry out noise reduction process by filter and obtains preprocessed data;2) Peak detection is carried out to obtain the Time Domain Amplitude of signal to preprocessed data, while FFT transform is made to obtain to preprocessed data Its frequency domain character;3) signal frequency domain feature is utilized to use interpolation method reconfiguration waveform with Time Domain Amplitude;4) with next sampling period Reconfiguration waveform be fitted to obtain the correction waveform of signal;5) revised waveform will obtain new with the waveform fitting after it again Reconfiguration waveform, repeated several times, prediction error are gradually reduced, and precision is gradually increased.Patent 201310750413.7, is related to one kind Respiration signal processing method comprising following steps:S101, breath signal is pre-processed, realizes signal band selection, obtains Bandwidth signal must be limited;S103, Teager energy operator transformation is carried out to the restriction bandwidth signal, obtains the breath signal Instantaneous amplitude and instantaneous frequency;S105, time domain and frequency transformation are carried out respectively to the instantaneous amplitude and the instantaneous frequency, Obtain instantaneous respiratory intensity and instantaneous respiratory rate;S107, the instantaneous respiratory intensity and the instantaneous respiratory rate are carried out respectively It is filtered, obtains average respiratory intensity and average respiration.
Above-mentioned patent has prediction error small, advantage with high accuracy, and flow chart of data processing calculation amount is moderate, is suitable for calculating The limited portable device of power;Respiration signal processing method has good anti motion interference ability, can obtain simultaneously and can be real Present line calculates respiratory rate and respiratory intensity in real time.But expiration and air-breathing rope can be obtained in real time by not providing technical solution Draw a little, exhales to calculate cardiopulmonary test, inspiratory duration, the parameters such as oxygen pulse, respiratory rate, ventilatory capacity.
(1) the technical issues of solving
The invention aims to overcome the defect problem of the above-mentioned prior art, a kind of breathing detection method, energy are provided Enough obtain in real time is exhaled and air-breathing index point, to calculate expiration, inspiratory duration, the parameters such as respiratory rate.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of breathing detection method, includes the following steps:
S1, initialization detection points are 0, and air-breathing mark is true, and mark of exhaling is false;
X S2, delay data on flows, are detected;
S3, acquisition data on flows;
S4, judge whether newest point is more than X to test point, if it is otherwise, it returns to step S3, if yes carries out in next step;
S5, judge whether current traffic data and the product of next data on flows are less than Y, if it is otherwise, detection points add 1, return to step S4 are recycled and are continued to judge, if yes carry out step S6;
S6, judge whether to meet suction condition, if it is otherwise, detection points plus 1, return to step S4, cycle continue to judge, If yes step S7 is carried out;
S7, current traffic data and next data on flows are taken absolute value respectively, compares size, compared with small amount data Index point is as air-breathing index point;
S8, record air-breathing index point, it is false to set air-breathing mark, and mark of exhaling is true;
S9, judge whether to meet expiration condition, if it is otherwise, detection points plus 1, return to step S4, cycle continue to judge, If yes it carries out in next step;
S10, current traffic data and next data on flows take absolute value respectively, compare size, compared with small amount data Index point is as expiration index point;
S11, record expiration index point, it is true to set air-breathing mark, and mark of exhaling is false;
S12, it stops data collection, detection terminates.
Further, X is adjusted according to cardiopulmonary test-types dynamic in the step S2, X ranging from 15-30.
Further, Y is zero in the step S5, and Y is adjusted according to cardiopulmonary test-types dynamic, and Y is ranging from 0.000001-0.0004。
Further, suction condition is specially in the step S6:(1) air-breathing mark is true;(2) judge X flow If yes whether data carry out all greater than 0 in next step, if it is otherwise, being unsatisfactory for suction condition;(3) judge X data on flows Maximum value whether more than or equal to Z if yes meet suction condition if it is otherwise, being unsatisfactory for suction condition.
Further, Z is adjusted according to cardiopulmonary test-types dynamic in the step S6, and Z is threshold value, Z ranging from 0.001- 0.03。
Further, expiration condition is specially in the step S9:(1) mark of exhaling is true;(2) judge X flow If yes whether data carry out all less than 0 in next step, if it is otherwise, being unsatisfactory for expiration condition;(3) judge X data on flows The absolute value of minimum value whether more than or equal to Z if yes meet expiration condition if it is otherwise, being unsatisfactory for expiration condition.
Further, Z is adjusted according to cardiopulmonary test-types dynamic in the step S9, and Z is threshold value, Z ranging from 0.001- 0.03。
(3) advantageous effect
Beneficial effects of the present invention:A kind of breathing detection method, complexity is low, and performance is good, can be used for preserving breathing in real time Index point reduces operating personnel's burden;Suction condition provided by the invention or expiration condition judgment, effectively prevent feeble respiration Error in data caused by fluctuation;Zero crossing provided by the invention judges that zero is a range, in conjunction with suction condition or expiration item Part judges that the two mutually constrains, and more accurately calculates the index point of air-breathing and expiration.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow chart of the present invention;
Fig. 2 is that SVC tests data on flows and its result figure of corresponding breathing index point;
Fig. 3 is that FVC tests data on flows and its result figure of corresponding breathing index point;
Fig. 4 is that MVV tests data on flows and its result figure of corresponding breathing index point;
Fig. 5 is that CPET tests data on flows and its result figure of corresponding breathing index point.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Equipment for breath signal detection includes mainly host computer and slave computer, and slave computer is mainly breathing gas acquisition Device, including ultrasonic flow transducer, 02 concentration analysis device, CO2 concentration sensor.Ultrasonic flow transducer is for testing human body Breathing gas flow, 02 concentration analysis device is used to test oxygen concentration in breathing gas, and CO2 concentration sensor is for testing Gas concentration lwevel in breathing gas.Host computer is mainly used to receive the data of slave computer acquisition, shows respiratory waveform, calculates the heart Lung relevant parameter is used for clinical diagnosis.
The premise that cardiorespiratory parameters calculate is that breathing index point is accurately positioned, and by the data on flows processing to acquisition, is calculated Index point is breathed, including:Whether cycle criterion current point meets delayed data condition to test point;Judge whether test point meets Zero crossing condition;Judge whether test point meets suction condition or breathing condition;Alternately record air-breathing index point and index of exhaling Point.
In conjunction with Fig. 1, a kind of breathing detection method includes the following steps:
S1, initialization detection points are 0, and air-breathing mark is true, and mark of exhaling is false;
X S2, delay data on flows, are detected;X is adjusted according to cardiopulmonary test-types dynamic, X ranging from 15-30;
S3, acquisition data on flows:
S4, judge whether newest point is more than X to test point, if it is otherwise, it returns to step S3, if yes carries out in next step;
S5, judge whether current traffic data and the product of next data on flows are less than Y, if it is otherwise, detection points add 1, return to step S4 are recycled and are continued to judge, if yes carry out step S6;Y is zero, and Y is adjusted according to cardiopulmonary test-types dynamic, Y ranging from 0.000001-0.0004;
S6, judge whether to meet suction condition, if it is otherwise, detection points plus 1, return to step S4, cycle continue to judge, If yes step S7 is carried out;Suction condition is specially in step S6:(1) air-breathing mark is true;(2) judge X data on flows Whether all greater than 0, if yes carry out in next step, if it is otherwise, being unsatisfactory for suction condition;(3) judge X data on flows most If yes whether big value more than or equal to Z meets suction condition if it is otherwise, being unsatisfactory for suction condition;Z is according to cardiopulmonary test-types Dynamic adjusts, and Z is threshold value, Z ranging from 0.001-0.03;
S7, current traffic data and next data on flows are taken absolute value respectively, compares size, compared with small amount data Index point (detection points or detection points plus 1) is used as air-breathing index point;
S8, record air-breathing index point, it is false to set air-breathing mark, and mark of exhaling is true;
S9, judge whether to meet expiration condition, if it is otherwise, detection points plus 1, return to step S4, cycle continue to judge, If yes it carries out in next step;Expiration condition is specially in step S9:(1) mark of exhaling is true;(2) judge X data on flows Whether all less than 0, if yes carry out in next step, if it is otherwise, being unsatisfactory for expiration condition;(3) judge X data on flows most If yes whether the absolute value of small value more than or equal to Z meets expiration condition if it is otherwise, being unsatisfactory for expiration condition;Z is according to cardiopulmonary Test-types dynamic adjusts, and Z is threshold value, Z ranging from 0.001-0.03;
S10, current traffic data and next data on flows take absolute value respectively, compare size, compared with small amount data Index point (detection points or detection points plus 1) is used as expiration index point;
S11, record expiration index point, it is true to set air-breathing mark, and mark of exhaling is false;
S12, it stops data collection, detection terminates.
Breathing detection method is mainly for pulmonary function test (pft), including static lung volume (SVC) test, lung of exerting oneself in the present invention Amount (FVC) living is tested, maximal ventilatory volume (MVV) is tested, cardiopulmonary exercise test (CPET) test.Each tests X, Y, the Z used Numerical value is as shown in table 1.
1 pulmonary function test (pft) parameter list of table
Type SVC FVC MVV CPET
Delay data number (X) 30 30 15 25
Zero passage point range (Y) 0.0004 0.000001 0.000001 0.00001
Expiration or Inhalation Threshold (Z) 0.03 0.03 0.001 0.03
Static lung volume (SVC) test is carried out by using the method for the present invention, forced vital capacity (FVC) is tested, maximum logical Tolerance (MVV) is tested, and Fig. 2 gives SVC test datas on flows and its result figure of corresponding breathing index point, Fig. 3 give FVC Data on flows and its result figure of corresponding breathing index point are tested, Fig. 4 gives MVV test datas on flows and its corresponding breathing rope Draw result figure a little, Fig. 5 gives CPET test datas on flows and its result figure of corresponding breathing index point.It can from Fig. 2 to Fig. 5 To find out, zero-crossing method calculates respiration by judging the positive and negative values of air-breathing and expiration, when occurring faint wave in respiration When dynamic, erroneous judgement is not occurred.
In conclusion the embodiment of the present invention, breathing detection method, complexity is low, and performance is good, can be used for preserving breathing in real time Index point reduces operating personnel's burden;Suction condition provided by the invention or expiration condition judgment, effectively prevent feeble respiration Error in data caused by fluctuation;Zero crossing provided by the invention judges that zero is a range, in conjunction with suction condition or expiration item Part judges that the two mutually constrains, and more accurately calculates the index point of air-breathing and expiration.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to the foregoing embodiments Invention is explained in detail, it will be understood by those of ordinary skill in the art that:It still can be to aforementioned each implementation Technical solution recorded in example is modified or equivalent replacement of some of the technical features;And these modification or It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.

Claims (7)

1. a kind of breathing detection method, which is characterized in that include the following steps:
S1, initialization detection points are 0, and air-breathing mark is true, and mark of exhaling is false;
X S2, delay data on flows, are detected;
S3, acquisition data on flows;
S4, judge whether newest point is more than X to test point, if it is otherwise, it returns to step S3, if yes carries out in next step;
S5, judge whether current traffic data and the product of next data on flows are less than Y, if it is otherwise, detection points plus 1, are returned Step S4 is returned, cycle continues to judge, if yes carries out step S6;
S6, judge whether to meet suction condition, if it is otherwise, detection points plus 1, return to step S4, cycle continue to judge, if It is to carry out step S7;
S7, current traffic data and next data on flows are taken absolute value respectively, compares size, compared with the index of small amount data Point is used as air-breathing index point;
S8, record air-breathing index point, it is false to set air-breathing mark, and mark of exhaling is true;
S9, judge whether to meet expiration condition, if it is otherwise, detection points plus 1, return to step S4, cycle continue to judge, if It is to carry out in next step;
S10, current traffic data and next data on flows take absolute value respectively, compare size, compared with the index of small amount data Point is used as expiration index point;
S11, record expiration index point, it is true to set air-breathing mark, and mark of exhaling is false;
S12, it stops data collection, detection terminates.
2. a kind of breathing detection method as described in claim 1, it is characterised in that:X is tested according to cardiopulmonary in the step S2 Type dynamic adjusts, X ranging from 15-30.
3. a kind of breathing detection method as described in claim 1, which is characterized in that Y is zero in the step S5, Y according to Cardiopulmonary test-types dynamic adjusts, Y ranging from 0.000001-0.0004.
4. a kind of breathing detection method as described in claim 1, which is characterized in that suction condition is specific in the step S6 For:(1) air-breathing mark is true;(2) whether X data on flows is judged all greater than 0, is if yes carried out in next step, if NO Then it is unsatisfactory for suction condition;(3) judge whether the maximum value of X data on flows is more than or equal to Z, if it is otherwise, being unsatisfactory for air-breathing item If yes part meets suction condition.
5. a kind of breathing detection method as claimed in claim 4, which is characterized in that Z is tested according to cardiopulmonary in the step S6 Type dynamic adjusts, and Z is threshold value, Z ranging from 0.001-0.03.
6. a kind of breathing detection method as described in claim 1, which is characterized in that expiration condition is specific in the step S9 For:(1) mark of exhaling is true;(2) whether X data on flows is judged all less than 0, is if yes carried out in next step, if NO Then it is unsatisfactory for expiration condition;(3) judge whether the absolute value of the minimum value of X data on flows is more than or equal to Z, if it is otherwise, discontented Sufficient expiration condition, if yes meets expiration condition.
7. a kind of breathing detection method as claimed in claim 6, which is characterized in that Z is tested according to cardiopulmonary in the step S9 Type dynamic adjusts, and Z is threshold value, Z ranging from 0.001-0.03.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113116336A (en) * 2021-03-22 2021-07-16 深圳市安保科技有限公司 Respiration detection method and device, and computer storage medium
CN113974608A (en) * 2021-10-28 2022-01-28 扬州市职业大学(扬州市广播电视大学) Multifunctional lung function detection intelligent diagnosis platform

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EP2311371A1 (en) * 2009-10-15 2011-04-20 Innovision A/S Combination of inert gast rebreathing and multiple-breath wash-out techniques for determination of indices of ventilation inhomogeneity
WO2016064908A1 (en) * 2014-10-25 2016-04-28 Sumner Bluffs, Llc. Systems and methods for determining compliance and efficacy of a dosing regimen for a pharmaceutical agent
CN106999143A (en) * 2014-12-12 2017-08-01 皇家飞利浦有限公司 acoustic monitoring system, monitoring method and monitoring computer program

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Publication number Priority date Publication date Assignee Title
US6491642B1 (en) * 1999-10-12 2002-12-10 Dymedix, Corp. Pyro/piezo sensor
CN101125083A (en) * 2006-08-18 2008-02-20 深圳迈瑞生物医疗电子股份有限公司 Fault-tolerant method and device in respiratory mechanics monitoring system
EP2311371A1 (en) * 2009-10-15 2011-04-20 Innovision A/S Combination of inert gast rebreathing and multiple-breath wash-out techniques for determination of indices of ventilation inhomogeneity
WO2016064908A1 (en) * 2014-10-25 2016-04-28 Sumner Bluffs, Llc. Systems and methods for determining compliance and efficacy of a dosing regimen for a pharmaceutical agent
CN106999143A (en) * 2014-12-12 2017-08-01 皇家飞利浦有限公司 acoustic monitoring system, monitoring method and monitoring computer program

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113116336A (en) * 2021-03-22 2021-07-16 深圳市安保科技有限公司 Respiration detection method and device, and computer storage medium
CN113974608A (en) * 2021-10-28 2022-01-28 扬州市职业大学(扬州市广播电视大学) Multifunctional lung function detection intelligent diagnosis platform

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