WO2019205841A1 - Method and system for acquiring respiration information - Google Patents

Method and system for acquiring respiration information Download PDF

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Publication number
WO2019205841A1
WO2019205841A1 PCT/CN2019/078848 CN2019078848W WO2019205841A1 WO 2019205841 A1 WO2019205841 A1 WO 2019205841A1 CN 2019078848 W CN2019078848 W CN 2019078848W WO 2019205841 A1 WO2019205841 A1 WO 2019205841A1
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Prior art keywords
respiratory
signal
human body
target human
pressure
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PCT/CN2019/078848
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French (fr)
Chinese (zh)
Inventor
杜乙
周舜
王若曦
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吴昊
弓健
岳海振
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Publication of WO2019205841A1 publication Critical patent/WO2019205841A1/en

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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
    • A61B5/22Ergometry; Measuring muscular strength or the force of a muscular blow
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802Sensor mounted on worn items
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813Specially adapted to be attached to a specific body part
    • A61B5/6823Trunk, e.g., chest, back, abdomen, hip
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes

Definitions

  • the present invention relates to the field of biomedical technology, and in particular, to a method and system for acquiring respiratory information.
  • Breathing is an important physiological process of the human body.
  • Respiratory parameters are an important physiological parameter of clinical monitoring.
  • the respiratory suffocation alarm through the monitoring device can prompt the medical staff to pay attention to the patient's condition and avoid delaying the patient's condition.
  • Optimal treatment time in addition, the precise implementation of medical imaging and radiotherapy often requires the use of patient breathing information, such as 4D CT imaging (4D-CT) and Respiratory-Gated Radiotherapy (Respiratory-Gated Radiotherapy) Etc., and the accurate acquisition of patient breathing information (such as respiratory phase, respiratory cycle, etc.) is an important factor in determining imaging or treatment outcome.
  • 4D CT imaging 4D-CT
  • Respiratory-Gated Radiotherapy Respiratory-Gated Radiotherapy
  • the most widely used method for obtaining patient respiratory information is to obtain the fluctuation of the abdomen (or the marker on the abdomen) directly or indirectly (by placing a marker) by optical tracking. Breathing information.
  • the main disadvantages of using this method to obtain patient respiratory information are: when the supine position, the human abdominal muscles and fats move during breathing, the abdominal surface is not flat, and the signal collection method based on the abdominal surface is unstable, and at the same time, individual differences and measurements The problem of position dependence seriously interferes with the accuracy, reliability and repeatability of respiratory information collection.
  • the invention provides a method and a system for acquiring respiratory information, which are used for obtaining respiratory information by collecting the change of body surface pressure caused by muscle movement of multiple parts during human breathing, and improving the accuracy and reliability of respiratory information collection.
  • the present invention provides a method for acquiring respiratory information, and the method for obtaining the respiratory information includes:
  • the pressure signals corresponding to different body parts of the target human body are collected;
  • the plurality of different body parts includes:
  • the back, waist and chest of the target human body The back, waist and chest of the target human body.
  • the preset pressure collection mode includes:
  • a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
  • a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
  • the signal processing is performed on the collected pressure signal, and the respiratory signal corresponding to the target human body is analyzed, including:
  • the band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
  • the acquiring the respiratory intensity and the respiratory frequency corresponding to the target human body according to the obtained respiratory signal including:
  • the instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
  • the embodiment of the present invention further provides a system for acquiring breathing information, where the system for acquiring breathing information includes:
  • the signal acquisition module is configured to collect pressure signals corresponding to different body parts of the target human body according to a preset pressure collection manner
  • a signal processing module configured to perform signal processing on the collected pressure signal, and analyze and obtain a respiratory signal corresponding to the target human body
  • an information acquiring module configured to acquire, according to the obtained respiratory signal, a respiratory intensity and a respiratory frequency corresponding to the target human body.
  • the plurality of different body parts includes:
  • the back, waist and chest of the target human body The back, waist and chest of the target human body.
  • the preset pressure collection mode includes:
  • a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
  • a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
  • the signal processing module is configured to:
  • the band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
  • the information acquisition module is configured to:
  • the instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
  • acquiring the respiratory intensity and respiratory frequency corresponding to the target human body may also be implemented as:
  • the pressure signals corresponding to different body parts of the target human body are collected;
  • the method and system for acquiring respiratory information of the present invention can achieve the following beneficial effects:
  • FIG. 1 is a schematic flow chart of an embodiment of a method for acquiring respiratory information according to the present invention
  • FIG. 2 is a schematic flow chart of an embodiment of step S20 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention
  • FIG. 3 is a schematic flow chart of an embodiment of step S30 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention
  • FIG. 4 is a schematic diagram of functional modules of an embodiment of a respiratory information acquisition system of the present invention.
  • the invention provides a method and a system for acquiring respiratory information.
  • the contraction and relaxation of the lungs are mainly realized by the coordinated movement of multiple muscles around the lungs, especially the muscle groups on both sides of the spine (such as the intercostal space). Muscle, upper and lower serratus, lower back serratus), back muscle group, abdominal muscle group and chest muscle group, etc., and muscle movement will cause changes in body surface pressure, this pressure change can be processed and analyzed after the human body
  • the respiratory information is relevant.
  • the method and system for acquiring respiratory information of the present invention acquires respiratory information corresponding to the human body by collecting information on changes in body surface pressure caused by muscle movements of multiple parts (such as the back, chest, and waist) when the human body breathes.
  • the present application uses multiple points to simultaneously collect the surface pressure information of the surface of the target human body breathing, and cooperates with the human anatomy to make a correlation analysis technical solution, which can further obtain the breathing of the target human body.
  • Individualized breathing information such as patterns, organ muscle involvement, etc.
  • FIG. 1 is a schematic flowchart of an embodiment of a method for acquiring respiratory information according to the present invention; and a method for acquiring respiratory information according to the present invention may be implemented as steps S10-S30 as follows:
  • Step S10 collecting, according to a preset pressure collection manner, a pressure signal corresponding to each of different body parts of the target human body;
  • the respiratory information acquisition system collects pressure signals of a plurality of different body parts of the target human body according to the type of the pressure sensor adopted according to the preset pressure collection mode. .
  • the pressure sensor provided for the target human body includes but is not limited to: a patch type pressure sensor, that is, can be attached to a corresponding part of the target human body, and the above-mentioned patch type pressure sensor is used together with a fixed device.
  • a fixed device such as a mesh body or a strap; or a wearable pressure sensing device; or a reclining plate device with a pressure sensor (such as a plate or a bed).
  • the system can use the following pressure collection methods to collect pressure signals of different body parts of the target human body:
  • a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor.
  • Recumbent body board equipment eg, board, bed, etc.
  • a pressure sensor is arranged on the chest of the target human body, for example, a pressure sensor is attached to the chest of the target human body, and the above-mentioned patch type pressure sensor is matched with a fixed device such as a mesh body or a belt. Fixed at the corresponding position of the human body; or, the wearable pressure sensing device is disposed on the target human body; for example, a vest provided with a pressure sensor or the like.
  • Step S20 performing signal processing on the collected pressure signal, and analyzing and obtaining a respiratory signal corresponding to the target human body;
  • the system performs analog-to-digital conversion on the pressure signal.
  • a multi-bit analog-to-digital converter of at least 16 bits is used to convert the analog digital signal, and the collected analog pressure signal is converted into a digital signal.
  • performing signal processing on the converted digital signal for example, performing smoothing filtering on the digital signal to eliminate noise influence, thereby analyzing and obtaining a breathing signal corresponding to the target human body.
  • Step S30 Acquire a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal.
  • the system performs signal processing to obtain waveform data corresponding to the respiratory signal, and according to the waveform data of the respiratory signal, the respiratory intensity and respiratory frequency corresponding to the target human body are obtained. For example, according to the waveform data of the respiratory signal, the peak value and the trough value of the respiratory signal waveform are acquired, and the corresponding respiratory frequency is calculated according to the peak value and the trough value.
  • FIG. 2 is a schematic flow chart of an embodiment of step S20 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention;
  • Step S20, performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body may be further implemented as steps S21-S22 described in FIG. 2:
  • Step S21 performing analog-to-digital conversion on the collected pressure signal, and converting the collected dynamic pressure signal into a corresponding digital signal;
  • Step S22 Filtering the converted digital signal by using a band pass filter to eliminate low frequency and high frequency noise interference, and obtaining a breathing signal corresponding to the target human body.
  • the digital signal converted by the collected pressure signal is filtered by a band pass filter to eliminate low frequency and high frequency noise interference, thereby obtaining the processed breathing signal.
  • the passband range of the bandpass filter may be configured according to a clinical or specific application scenario, which is not specifically limited in the embodiment of the present invention.
  • the band pass filter used in the embodiment of the present invention is a digital band pass filter.
  • FIG. 3 is a schematic flowchart of an embodiment of step S30 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention;
  • Step S30, obtaining the respiratory intensity and respiratory frequency corresponding to the target human body according to the obtained respiratory signal may further be implemented as steps S31-S32 described in FIG. 3:
  • Step S31 performing spectral analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal, to obtain an instantaneous frequency of the respiratory signal;
  • Step S32 Perform filtering processing on the instantaneous amplitude and the instantaneous frequency respectively to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
  • the system acquires the time domain signal and performs spectrum analysis on the time domain signal to obtain the instantaneous amplitude and the instantaneous frequency corresponding to the respiratory signal; as the corresponding instantaneous respiratory intensity And the instantaneous respiratory rate; performing the digital low-pass filtering process on the obtained instantaneous respiratory intensity and the instantaneous respiratory frequency respectively, obtaining an average respiratory intensity and an average respiratory frequency, and obtaining the obtained average respiratory intensity and the average respiratory frequency as the target human body corresponding Respiratory intensity and respiratory rate.
  • a signal average filtering technique or an equivalent infinite impulse response low-pass filter is used; those skilled in the art can understand that The above filtering process may also adopt a median equalization filtering technique or a weighted median filtering technique, or a general low-pass filtering technique.
  • the pressure signal is also signal processed to obtain the target.
  • the corresponding respiratory signal of the human body is also signal processed to obtain the target.
  • the pressure signal period of the target human body included in the pressure signal is identified, specifically:
  • the time-frequency analysis of the pressure signal of the target human body is performed to obtain the relationship of the frequency with time, and the result of the time-frequency analysis of the pressure signal is recognized by the support vector machine, and when the pressure signal of a certain period of time is recognized as the pressure when speaking When the signal is used, the time period is used as the pressure signal period of the target human body.
  • the target The pressure signal of the human body is processed to obtain the respiratory signal corresponding to the target human body, specifically:
  • Cluster analysis is performed on the relationship between the spectral data of the stress signal of each individual's quiet time and the corresponding respiratory signal (such as the ratio of pressure to respiratory intensity), and the relationship between the spectral data of the pressure signal at rest and the corresponding respiratory signal is obtained. Clustering result;
  • the body type (height, waist circumference, fat percentage, etc.) of each individual in the classification is obtained, and the average value of the body type data is taken as the representative value of the body type of the corresponding classification;
  • Determining the classification to which the target human body belongs according to the similarity between the body shape of the target human body and the body representative value of each classification (such as the weighted average of the height difference, the waist circumference difference, and the fat rate difference);
  • the frequency corresponding to the peak value of the amplitude in the spectrum data of the pressure signal of the target human body is taken as the respiratory frequency of the target person.
  • the method for obtaining respiratory information of the present invention adopts the method according to the preset pressure
  • a pressure signal corresponding to a plurality of different body parts of the target human body performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body; and obtaining the respiratory signal according to the obtained respiratory signal
  • the respiratory intensity and respiratory rate corresponding to the target human body the beneficial effects of obtaining more accurate respiratory information by collecting multiple body surface pressure signals, improving the accuracy and reliability of respiratory information acquisition, and further making respiratory information
  • the acquisition is reproducible; in addition, the application uses multiple points to simultaneously collect the surface pressure information of the body surface when the target is breathing, and cooperates with the human anatomy to make a correlation analysis technical solution, which can further obtain the breathing pattern and organ muscle participation of the target human body.
  • Personalized breathing information such as degrees.
  • the present invention Based on a method for acquiring respiratory information described in FIG. 1, FIG. 2 and FIG. 3, the present invention also provides an acquisition system for respiratory information; the acquisition system of the respiratory information can be implemented in FIG. 1, FIG. 2 and FIG. A method for obtaining respiratory information, thereby achieving the purpose of obtaining respiratory information by collecting a change in body surface pressure caused by muscle movement of a plurality of parts during breathing of the human body; as shown in FIG. 4, the present invention provides a respiratory information
  • the acquisition system includes:
  • the signal acquisition module 100 is configured to collect pressure signals corresponding to different body parts of the target human body according to a preset pressure collection manner
  • the signal processing module 200 is configured to perform signal processing on the collected pressure signal, and analyze and obtain a respiratory signal corresponding to the target human body;
  • the information acquisition module 300 is configured to acquire, according to the obtained respiratory signal, a respiratory intensity and a respiratory frequency corresponding to the target human body.
  • the plurality of different body parts comprises:
  • the back, waist and chest of the target human body The back, waist and chest of the target human body.
  • the preset pressure collection mode includes:
  • a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
  • a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
  • the signal processing module 200 is configured to:
  • the band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
  • the information obtaining module 300 is configured to:
  • the instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
  • the breathing information acquisition system of the present invention collects pressure signals corresponding to different body parts of the target human body according to a preset pressure collecting manner; performs signal processing on the collected pressure signals, and analyzes and obtains breathing corresponding to the target human body. a signal; obtaining a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal; and having the beneficial effect of acquiring more accurate respiratory information by collecting multiple body surface pressure signals, thereby improving respiratory information acquisition The accuracy and reliability also make the acquisition of respiratory information reproducible.
  • the application adopts multiple points to simultaneously collect the surface pressure information of the body surface when the target is breathing, and cooperates with the human anatomy to do the correlation analysis. Individualized breathing information such as respiratory patterns and organ muscle involvement of the target human body can be further obtained.
  • embodiments of the present invention can be provided as a method, system, or computer program product.
  • the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

A method and system for acquiring respiration information. The method comprises: collecting pressure signals respectively corresponding to multiple different body parts of a target human body according to a pre-set pressure collection manner (S10); performing signal processing on the collected pressure signals and analyzing same to obtain a respiration signal corresponding to the target human body (S20); and acquiring a respiration intensity and respiratory rate corresponding to the target human body according to the obtained respiration signal (S30). By collecting body pressure signals of multiple parts of a human body, more accurate respiration information can be acquired, the accuracy and reliability of respiration information acquisition are improved, and the repeatability of the acquisition of respiration information is further enabled. Using the technical solution of simultaneously collecting superficial pressure information upon respiration of a target human body at multiple points to make correlation analysis in cooperation with human anatomy, personalized respiration information such as a respiration mode and the participation degree of organ muscles of the target human body can be further obtained.

Description

呼吸信息的获取方法及系统Method and system for acquiring respiratory information 技术领域Technical field
本发明涉及生物医学技术领域,特别涉及一种呼吸信息的获取方法及系统。The present invention relates to the field of biomedical technology, and in particular, to a method and system for acquiring respiratory information.
背景技术Background technique
呼吸是人体重要的生理过程,呼吸参数是临床监护的一个重要生理参数;比如,当患者出现呼吸窒息甚至死亡时,通过监护设备的呼吸窒息报警可以及时提醒医务人员注意患者病情,避免延误患者的最佳治疗时间;另外,医学影像与放疗的精确实施,往往也需要利用患者呼吸信息,如与呼吸时相对应的四维CT成像技术(4D-CT)、呼吸门控放疗技术(Respiratory-Gated Radiotherapy)等,而患者呼吸信息(如呼吸时相、呼吸周期等)的准确获取,是决定成像或治疗效果的重要因素。Breathing is an important physiological process of the human body. Respiratory parameters are an important physiological parameter of clinical monitoring. For example, when a patient has respiratory suffocation or even death, the respiratory suffocation alarm through the monitoring device can prompt the medical staff to pay attention to the patient's condition and avoid delaying the patient's condition. Optimal treatment time; in addition, the precise implementation of medical imaging and radiotherapy often requires the use of patient breathing information, such as 4D CT imaging (4D-CT) and Respiratory-Gated Radiotherapy (Respiratory-Gated Radiotherapy) Etc., and the accurate acquisition of patient breathing information (such as respiratory phase, respiratory cycle, etc.) is an important factor in determining imaging or treatment outcome.
目前医学影像与放疗临床中,获取患者呼吸信息应用最广泛的方法是:采用光学追踪的方式,通过直接或间接(通过放置标记物)观察腹部(或腹部上标记物)的起伏变化,来获取呼吸信息。采用这种方法获取患者呼吸信息的主要缺点在于:仰卧位时人体腹部肌肉与脂肪在呼吸时发生运动,腹部表面并不平整,基于腹部表面的信号采集方式并不稳定,同时,个人差异以及测量位置依赖性问题,严重干扰了呼吸信息采集的准确性、可靠性与可重复性。At present, in medical imaging and radiotherapy, the most widely used method for obtaining patient respiratory information is to obtain the fluctuation of the abdomen (or the marker on the abdomen) directly or indirectly (by placing a marker) by optical tracking. Breathing information. The main disadvantages of using this method to obtain patient respiratory information are: when the supine position, the human abdominal muscles and fats move during breathing, the abdominal surface is not flat, and the signal collection method based on the abdominal surface is unstable, and at the same time, individual differences and measurements The problem of position dependence seriously interferes with the accuracy, reliability and repeatability of respiratory information collection.
发明内容Summary of the invention
本发明提供一种呼吸信息的获取方法及系统,用以通过采集人体呼吸时多个部位肌肉运动引起体表压力变化的方式,来获取呼吸信息,提高呼吸信息采集的准确性和可靠性。The invention provides a method and a system for acquiring respiratory information, which are used for obtaining respiratory information by collecting the change of body surface pressure caused by muscle movement of multiple parts during human breathing, and improving the accuracy and reliability of respiratory information collection.
本发明提供了一种呼吸信息的获取方法,所述呼吸信息的获取方法包括:The present invention provides a method for acquiring respiratory information, and the method for obtaining the respiratory information includes:
按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;According to the preset pressure collection mode, the pressure signals corresponding to different body parts of the target human body are collected;
对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;Performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body;
根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。Obtaining a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal.
进一步地,所述多个不同身体部位包括:Further, the plurality of different body parts includes:
目标人体的背部、腰部与胸部。The back, waist and chest of the target human body.
进一步地,所述预设压力采集方式包括:Further, the preset pressure collection mode includes:
针对背部与腰部的压力信号采集,可以采用如下采集方式:在目标人体的背部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上,或者使目标人体躺在设置有压力传感器的可躺卧体板设备上;For the pressure signal acquisition of the back and the waist, the following acquisition methods can be used: a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
针对胸部的压力信号采集,可以采用如下采集方式:在目标人体的胸部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上。For the chest pressure signal acquisition, the following acquisition methods can be used: a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
进一步地,所述对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号,包括:Further, the signal processing is performed on the collected pressure signal, and the respiratory signal corresponding to the target human body is analyzed, including:
对采集的所述压力信号进行模数转换,将采集的动态的压力信号转换为对应的数字信号;Performing analog-to-digital conversion on the collected pressure signal, and converting the collected dynamic pressure signal into a corresponding digital signal;
利用带通滤波器对转换后的数字信号进行滤波处理,消除低频和高频的噪声干扰,得到所述目标人体对应的呼吸信号。The band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
进一步地,所述根据得到的所述呼吸信号,获取所述目标人体对应的呼吸 强度和呼吸频率,包括:Further, the acquiring the respiratory intensity and the respiratory frequency corresponding to the target human body according to the obtained respiratory signal, including:
根据得到的呼吸信号得到的所述呼吸信号的瞬时幅值,对所述呼吸信号进行频谱分析,得到所述呼吸信号的瞬时频率;Performing a spectrum analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal to obtain an instantaneous frequency of the respiratory signal;
对所述瞬时幅值和瞬时频率分别进行滤波处理,得到所述目标人体对应的呼吸强度和呼吸频率。The instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
对应于上述实施例所提供的一种呼吸信息的获取方法,本发明实施例还提供了一种呼吸信息的获取系统,所述呼吸信息的获取系统包括:Corresponding to the method for obtaining the breathing information provided by the above embodiment, the embodiment of the present invention further provides a system for acquiring breathing information, where the system for acquiring breathing information includes:
信号采集模块,用于按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;The signal acquisition module is configured to collect pressure signals corresponding to different body parts of the target human body according to a preset pressure collection manner;
信号处理模块,用于对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;a signal processing module, configured to perform signal processing on the collected pressure signal, and analyze and obtain a respiratory signal corresponding to the target human body;
信息获取模块,用于根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。And an information acquiring module, configured to acquire, according to the obtained respiratory signal, a respiratory intensity and a respiratory frequency corresponding to the target human body.
进一步地,所述多个不同身体部位包括:Further, the plurality of different body parts includes:
目标人体的背部、腰部与胸部。The back, waist and chest of the target human body.
进一步地,所述预设压力采集方式包括:Further, the preset pressure collection mode includes:
针对背部与腰部的压力信号采集,可以采用如下采集方式:在目标人体的背部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上,或者使目标人体躺在设置有压力传感器的可躺卧体板设备上;For the pressure signal acquisition of the back and the waist, the following acquisition methods can be used: a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
针对胸部的压力信号采集,可以采用如下采集方式:在目标人体的胸部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上。For the chest pressure signal acquisition, the following acquisition methods can be used: a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
进一步地,所述信号处理模块用于:Further, the signal processing module is configured to:
对采集的所述压力信号进行模数转换,将采集的动态的压力信号转换为对 应的数字信号;Performing analog-to-digital conversion on the collected pressure signal to convert the collected dynamic pressure signal into a corresponding digital signal;
利用带通滤波器对转换后的数字信号进行滤波处理,消除低频和高频的噪声干扰,得到所述目标人体对应的呼吸信号。The band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
进一步地,所述信息获取模块用于:Further, the information acquisition module is configured to:
根据得到的呼吸信号得到的所述呼吸信号的瞬时幅值,对所述呼吸信号进行频谱分析,得到所述呼吸信号的瞬时频率;Performing a spectrum analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal to obtain an instantaneous frequency of the respiratory signal;
对所述瞬时幅值和瞬时频率分别进行滤波处理,得到所述目标人体对应的呼吸强度和呼吸频率。The instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
在本发明的一个实施例中,获取所述目标人体对应的呼吸强度和呼吸频率,还可以实施为:In an embodiment of the present invention, acquiring the respiratory intensity and respiratory frequency corresponding to the target human body may also be implemented as:
按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;According to the preset pressure collection mode, the pressure signals corresponding to different body parts of the target human body are collected;
对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;Performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body;
根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。本发明一种呼吸信息的获取方法及系统可以达到如下有益效果:Obtaining a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal. The method and system for acquiring respiratory information of the present invention can achieve the following beneficial effects:
通过按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率;具有通过采集人体多处体表压力信号来获取更为准确的呼吸信息的有益效果,提高了呼吸信息获取的准确性和可靠性,也进一步使得呼吸信息的获取具备可重复性;另外,本申请采用了多点同时采集目标人体呼吸时体表表面压力信息,配合人体解剖做相关性分析的技术方案,可进一步得到目标人体的呼吸模式、器官肌肉参与度等个体化呼吸信息。Collecting pressure signals corresponding to different body parts of the target human body according to a preset pressure collection manner; performing signal processing on the collected pressure signals, and analyzing and obtaining a respiratory signal corresponding to the target human body; Breathing signal, obtaining the respiratory intensity and respiratory frequency corresponding to the target human body; having the beneficial effect of acquiring more accurate respiratory information by collecting multiple body surface pressure signals, thereby improving the accuracy and reliability of respiratory information acquisition, Further, the acquisition of respiratory information is further reproducible; in addition, the present application uses multiple points to simultaneously collect surface pressure information of the surface of the target human body breathing, and cooperates with the human anatomy to make a correlation analysis technical solution, which can further obtain the breathing of the target human body. Individualized breathing information such as patterns, organ muscle involvement, etc.
本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所指出的内容来实现和获得。Other features and advantages of the invention will be set forth in the description which follows, The objectives and other advantages of the invention may be realized and obtained in the written description and the appended claims.
下面通过附图和实施例,对本发明的技术方案做进一步描述。The technical solutions of the present invention are further described below through the accompanying drawings and embodiments.
附图说明DRAWINGS
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。在附图中:The drawings are intended to provide a further understanding of the invention, and are intended to be a In the drawing:
图1是本发明一种呼吸信息的获取方法的一种实施方式的流程示意图;1 is a schematic flow chart of an embodiment of a method for acquiring respiratory information according to the present invention;
图2是本发明一种呼吸信息的获取方法中图1所述实施例中步骤S20的一种实施方式的流程示意图;2 is a schematic flow chart of an embodiment of step S20 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention;
图3是本发明一种呼吸信息的获取方法中图1所述实施例中步骤S30的一种实施方式的流程示意图;3 is a schematic flow chart of an embodiment of step S30 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention;
图4是本发明一种呼吸信息的获取系统的一种实施方式的功能模块示意图。4 is a schematic diagram of functional modules of an embodiment of a respiratory information acquisition system of the present invention.
具体实施方式detailed description
以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。The preferred embodiments of the present invention are described with reference to the accompanying drawings, which are intended to illustrate and illustrate the invention.
本发明提供一种呼吸信息的获取方法及系统,由于人体呼吸时,肺部的收缩与舒张主要是依靠肺部周围多个肌肉协同运动来实现,特别是脊柱两侧的肌肉群(比如肋间肌、上后锯肌、下后锯肌)、背部肌肉群、腹部肌肉群与胸部肌肉群等,而肌肉的运动会引起体表压力的变化,这种压力变化经处理、分析后即可与人体的呼吸信息相关。基于上述思想,本发明呼吸信息的获取方法及系统,通过采集人体呼吸时多个部位(如背部、胸部和腰部)的肌肉运动所引起体表压力的变化信息,来获取人体对应的呼吸信息,从而提高呼吸信息采集 的准确性和可靠性;另外,本申请采用了多点同时采集目标人体呼吸时体表表面压力信息,配合人体解剖做相关性分析的技术方案,可进一步得到目标人体的呼吸模式、器官肌肉参与度等个体化呼吸信息。The invention provides a method and a system for acquiring respiratory information. When the human body breathes, the contraction and relaxation of the lungs are mainly realized by the coordinated movement of multiple muscles around the lungs, especially the muscle groups on both sides of the spine (such as the intercostal space). Muscle, upper and lower serratus, lower back serratus), back muscle group, abdominal muscle group and chest muscle group, etc., and muscle movement will cause changes in body surface pressure, this pressure change can be processed and analyzed after the human body The respiratory information is relevant. Based on the above idea, the method and system for acquiring respiratory information of the present invention acquires respiratory information corresponding to the human body by collecting information on changes in body surface pressure caused by muscle movements of multiple parts (such as the back, chest, and waist) when the human body breathes. Thereby improving the accuracy and reliability of the collection of respiratory information; in addition, the present application uses multiple points to simultaneously collect the surface pressure information of the surface of the target human body breathing, and cooperates with the human anatomy to make a correlation analysis technical solution, which can further obtain the breathing of the target human body. Individualized breathing information such as patterns, organ muscle involvement, etc.
如图1所示,图1是本发明一种呼吸信息的获取方法的一种实施方式的流程示意图;本发明一种呼吸信息的获取方法可以实施为如下描述的步骤S10-S30:As shown in FIG. 1 , FIG. 1 is a schematic flowchart of an embodiment of a method for acquiring respiratory information according to the present invention; and a method for acquiring respiratory information according to the present invention may be implemented as steps S10-S30 as follows:
步骤S10、按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;Step S10: collecting, according to a preset pressure collection manner, a pressure signal corresponding to each of different body parts of the target human body;
本发明实施例中,呼吸信息的获取系统(以下简称“系统”)根据所采取的压力传感器的类型,按照预先设定的压力采集方式,对目标人体的多个不同身体部位进行压力信号的采集。例如,对目标人体的背部、腰部与胸部的压力信号进行采集。本发明实施例中,针对目标人体所设置的压力传感器包括但不限于:贴片式压力传感器,即:可以贴在目标人体身体的相应部位,同时配合使用固定器材将上述贴片式压力传感器进行固定,例如可以使用网体、束带等固定器材;或者,可穿戴式压力传感设备;或者,带有压力传感器的可躺卧板体设备(比如板体或者床等)。In the embodiment of the present invention, the respiratory information acquisition system (hereinafter referred to as “system”) collects pressure signals of a plurality of different body parts of the target human body according to the type of the pressure sensor adopted according to the preset pressure collection mode. . For example, the pressure signals of the back, waist and chest of the target human body are collected. In the embodiment of the present invention, the pressure sensor provided for the target human body includes but is not limited to: a patch type pressure sensor, that is, can be attached to a corresponding part of the target human body, and the above-mentioned patch type pressure sensor is used together with a fixed device. Fixed, for example, a fixed device such as a mesh body or a strap; or a wearable pressure sensing device; or a reclining plate device with a pressure sensor (such as a plate or a bed).
在本发明一优选的实施例中,系统可以采用如下压力采集方式对目标人体不同身体部位的压力信号进行采集:In a preferred embodiment of the present invention, the system can use the following pressure collection methods to collect pressure signals of different body parts of the target human body:
针对背部与腰部的压力信号采集,可以采用如下采集方式:在目标人体的背部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上,或者使目标人体躺在设置有压力传感器的可躺卧体板设备(比如,板体、床等)上;For the pressure signal acquisition of the back and the waist, the following acquisition methods can be used: a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment (eg, board, bed, etc.);
针对胸部的压力信号采集,可以采用如下采集方式:在目标人体的胸部设置压力传感器,比如,在目标人体的胸部贴上压力传感器并配合网体、束带等固定器材将上述贴片式压力传感器固定在人体的相应位置处;或者,将可穿戴式压力传感设备配置在目标人体身上;比如,设置有压力传感器的背心等。For the chest pressure signal acquisition, the following acquisition method can be adopted: a pressure sensor is arranged on the chest of the target human body, for example, a pressure sensor is attached to the chest of the target human body, and the above-mentioned patch type pressure sensor is matched with a fixed device such as a mesh body or a belt. Fixed at the corresponding position of the human body; or, the wearable pressure sensing device is disposed on the target human body; for example, a vest provided with a pressure sensor or the like.
步骤S20、对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;Step S20, performing signal processing on the collected pressure signal, and analyzing and obtaining a respiratory signal corresponding to the target human body;
根据采集得到的压力信号,系统对上述压力信号进行模数转换,比如,采用至少16位的多位模数转换器进行模拟数字信号的转换,即将采集到的上述模拟压力信号转换为数字信号,并针对转换后的数字信号进行信号处理,例如,对上述数字信号进行平滑滤波处理,消除噪声影响,从而分析得到该目标人体对应的呼吸信号。According to the collected pressure signal, the system performs analog-to-digital conversion on the pressure signal. For example, a multi-bit analog-to-digital converter of at least 16 bits is used to convert the analog digital signal, and the collected analog pressure signal is converted into a digital signal. And performing signal processing on the converted digital signal, for example, performing smoothing filtering on the digital signal to eliminate noise influence, thereby analyzing and obtaining a breathing signal corresponding to the target human body.
步骤S30、根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。Step S30: Acquire a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal.
针对得到的呼吸信号,系统对其进行信号处理,得到呼吸信号对应的波形数据,并根据呼吸信号的波形数据,得到目标人体对应的呼吸强度和呼吸频率。例如,根据呼吸信号的波形数据,获取该呼吸信号波形的波峰值和波谷值,进而根据上述波峰值和波谷值计算得到对应的呼吸频率。According to the obtained respiratory signal, the system performs signal processing to obtain waveform data corresponding to the respiratory signal, and according to the waveform data of the respiratory signal, the respiratory intensity and respiratory frequency corresponding to the target human body are obtained. For example, according to the waveform data of the respiratory signal, the peak value and the trough value of the respiratory signal waveform are acquired, and the corresponding respiratory frequency is calculated according to the peak value and the trough value.
在本发明一优选的实施例中,如图2所示,图2是本发明一种呼吸信息的获取方法中图1所述实施例中步骤S20的一种实施方式的流程示意图;图1所述实施例中的“步骤S20、对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号”,可以进一步实施为图2所描述的步骤S21-S22:In a preferred embodiment of the present invention, as shown in FIG. 2, FIG. 2 is a schematic flow chart of an embodiment of step S20 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention; In the embodiment, "Step S20, performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body" may be further implemented as steps S21-S22 described in FIG. 2:
步骤S21、对采集的所述压力信号进行模数转换,将采集的动态的压力信号转换为对应的数字信号;Step S21, performing analog-to-digital conversion on the collected pressure signal, and converting the collected dynamic pressure signal into a corresponding digital signal;
步骤S22、利用带通滤波器对转换后的数字信号进行滤波处理,消除低频和高频的噪声干扰,得到所述目标人体对应的呼吸信号。Step S22: Filtering the converted digital signal by using a band pass filter to eliminate low frequency and high frequency noise interference, and obtaining a breathing signal corresponding to the target human body.
本发明实施例中,将采集的压力信号转换得到的数字信号,经由一个带通滤波器进行滤波处理,将低频和高频的噪声干扰进行消除,从而得到处理后的呼吸信号。该带通滤波器的通带范围可以根据临床或者具体的应用场景进行配置,本发明实施例对其不进行具体的限定。进一步地,本发明实施例中所采用的带通滤波器为数字带通滤波器。In the embodiment of the present invention, the digital signal converted by the collected pressure signal is filtered by a band pass filter to eliminate low frequency and high frequency noise interference, thereby obtaining the processed breathing signal. The passband range of the bandpass filter may be configured according to a clinical or specific application scenario, which is not specifically limited in the embodiment of the present invention. Further, the band pass filter used in the embodiment of the present invention is a digital band pass filter.
在本发明一优选的实施例中,如图3所示,图3是本发明一种呼吸信息的获取方法中图1所述实施例中步骤S30的一种实施方式的流程示意图;图1所述实施例中的“步骤S30、根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率”,还可以进一步实施为图3所描述的步骤S31-S32:In a preferred embodiment of the present invention, as shown in FIG. 3, FIG. 3 is a schematic flowchart of an embodiment of step S30 in the embodiment of FIG. 1 in a method for acquiring respiratory information according to the present invention; In the embodiment, "Step S30, obtaining the respiratory intensity and respiratory frequency corresponding to the target human body according to the obtained respiratory signal" may further be implemented as steps S31-S32 described in FIG. 3:
步骤S31、根据得到的呼吸信号得到的所述呼吸信号的瞬时幅值,对所述呼吸信号进行频谱分析,得到所述呼吸信号的瞬时频率;Step S31, performing spectral analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal, to obtain an instantaneous frequency of the respiratory signal;
步骤S32、对所述瞬时幅值和瞬时频率分别进行滤波处理,得到所述目标人体对应的呼吸强度和呼吸频率。本发明实施例中,针对降噪处理后得到的呼吸信号,系统获取其时域信号并对时域信号进行频谱分析,得到该呼吸信号对应的瞬时幅值和瞬时频率;作为对应的瞬时呼吸强度和瞬时呼吸频率;对得到的上述瞬时呼吸强度和瞬时呼吸频率分别进行数字低通滤波处理,得到平均呼吸强度和平均呼吸频率,将得到的平均呼吸强度和平均呼吸频率作为所述目标人体对应的呼吸强度和呼吸频率。Step S32: Perform filtering processing on the instantaneous amplitude and the instantaneous frequency respectively to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body. In the embodiment of the present invention, for the respiratory signal obtained after the noise reduction process, the system acquires the time domain signal and performs spectrum analysis on the time domain signal to obtain the instantaneous amplitude and the instantaneous frequency corresponding to the respiratory signal; as the corresponding instantaneous respiratory intensity And the instantaneous respiratory rate; performing the digital low-pass filtering process on the obtained instantaneous respiratory intensity and the instantaneous respiratory frequency respectively, obtaining an average respiratory intensity and an average respiratory frequency, and obtaining the obtained average respiratory intensity and the average respiratory frequency as the target human body corresponding Respiratory intensity and respiratory rate.
本发明实施例中,对得到的上述瞬时呼吸强度和瞬时呼吸频率进行数字低通滤波时,采用信号平均滤波技术或者等效的无限冲激响应低通滤波器;本领域的技术人员可以理解,上述滤波处理也可以采用中值均滤波技术或者加权中值滤波技术,或者一般低通滤波技术。In the embodiment of the present invention, when the obtained instantaneous respiratory intensity and the instantaneous respiratory frequency are digitally low-pass filtered, a signal average filtering technique or an equivalent infinite impulse response low-pass filter is used; those skilled in the art can understand that The above filtering process may also adopt a median equalization filtering technique or a weighted median filtering technique, or a general low-pass filtering technique.
由于人说话时会影响呼吸,所以需要去除这部分信号使得对呼吸信号的检测更为准确,在本发明的一个实施例中,还通过如下方式对所述压力信号进行信号处理,得到所述目标人体对应的呼吸信号:Since the person's speech affects the breathing, it is necessary to remove the part of the signal to make the detection of the respiratory signal more accurate. In an embodiment of the present invention, the pressure signal is also signal processed to obtain the target. The corresponding respiratory signal of the human body:
识别压力信号中包含的目标人体说话的压力信号时段;Identifying a pressure signal period in which the target human body is included in the pressure signal;
从压力信号中去除目标人体说话的压力信号时段的信号,得到目标人体安静时的压力信号;Removing the signal of the pressure signal period of the target human body from the pressure signal, and obtaining a pressure signal when the target human body is quiet;
对所述目标人体安静时的压力信号进行处理,得到目标人体对应的呼吸信号;Processing a pressure signal when the target human body is quiet, and obtaining a respiratory signal corresponding to the target human body;
其中,识别压力信号中包含的目标人体说话的压力信号时段,具体为:Wherein, the pressure signal period of the target human body included in the pressure signal is identified, specifically:
选取多个个体的安静时的压力信号和说话时的压力信号进行频谱分析,并将安静时的压力信号的频谱和说话时的压力信号的频谱作为训练集训练支持向量机;Selecting the individual's quiet pressure signal and the speech pressure signal for spectrum analysis, and using the spectrum of the pressure signal at rest and the spectrum of the pressure signal during speech as a training set training support vector machine;
将目标人体的压力信号进行时频分析,得到频率随时间的变化关系,将压力信号进行时频分析的结果通过支持向量机进行识别,当识别出某一时间段的压力信号为说话时的压力信号时,将该时间段作为目标人体说话的压力信号时段。The time-frequency analysis of the pressure signal of the target human body is performed to obtain the relationship of the frequency with time, and the result of the time-frequency analysis of the pressure signal is recognized by the support vector machine, and when the pressure signal of a certain period of time is recognized as the pressure when speaking When the signal is used, the time period is used as the pressure signal period of the target human body.
由于不同的个人,尤其是个人体型对通过压力数据获取呼吸数据有影响,为了减少这种影响,提高所获取的呼吸数据的准确性,在本发明的一个实施例中,所述对所述目标人体安静时的压力信号进行处理,得到目标人体对应的呼吸信号,具体为:Since different individuals, especially individual body types, have an effect on obtaining respiratory data through pressure data, in order to reduce this effect and improve the accuracy of the acquired respiratory data, in one embodiment of the invention, the target The pressure signal of the human body is processed to obtain the respiratory signal corresponding to the target human body, specifically:
选取多个个体的安静时的压力信号和对所述多个个体进行测量得到的对应的呼吸信号;Selecting a static pressure signal of the plurality of individuals and a corresponding respiratory signal measured by the plurality of individuals;
对每个个体的安静时的压力信号进行频谱分析,得到每个个体的安静时的压力信号的频谱数据;Performing a spectrum analysis on the static pressure signal of each individual to obtain spectral data of the stress signal of each individual at rest;
对每个个体的安静时的压力信号的频谱数据与对应的呼吸信号的关系(如压力与呼吸强度之比)进行聚类分析,得到安静时的压力信号的频谱数据与对应的呼吸信号的关系的聚类结果;Cluster analysis is performed on the relationship between the spectral data of the stress signal of each individual's quiet time and the corresponding respiratory signal (such as the ratio of pressure to respiratory intensity), and the relationship between the spectral data of the pressure signal at rest and the corresponding respiratory signal is obtained. Clustering result;
对聚类结果的每个分类,获取分类中每个个体的体型(身高、腰围、脂肪率等),并取体型数据的平均值作为对应分类的体型代表值;For each classification of the clustering results, the body type (height, waist circumference, fat percentage, etc.) of each individual in the classification is obtained, and the average value of the body type data is taken as the representative value of the body type of the corresponding classification;
根据目标人体的体型与每个分类的体型代表值的相似度大小(比如身高差值、腰围差值和脂肪率差值的加权平均值最小),确定目标人体所属的分类;Determining the classification to which the target human body belongs according to the similarity between the body shape of the target human body and the body representative value of each classification (such as the weighted average of the height difference, the waist circumference difference, and the fat rate difference);
对目标人体的安静时的压力信号进行频谱分析,得到目标人体的压力信号的频谱数据,再根据目标人体所属分类的安静时的压力信号的频谱数据与对应的呼吸信号的关系,得到目标人体的呼吸强度;Perform spectrum analysis on the pressure signal of the target human body at a quiet time, obtain spectrum data of the pressure signal of the target human body, and obtain the target human body according to the relationship between the spectrum data of the pressure signal at the quiet time of the classification of the target human body and the corresponding respiratory signal. Respiratory intensity
将目标人体的压力信号的频谱数据中幅值峰值所对应的频率作为目标人 体的呼吸频率。The frequency corresponding to the peak value of the amplitude in the spectrum data of the pressure signal of the target human body is taken as the respiratory frequency of the target person.
本发明呼吸信息的获取方法通过按照预设压力采The method for obtaining respiratory information of the present invention adopts the method according to the preset pressure
集方式,采集目标人体多个不同身体部位所分别对应的压力信号;对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率;具有通过采集人体多处体表压力信号来获取更为准确的呼吸信息的有益效果,提高了呼吸信息获取的准确性和可靠性,也进一步使得呼吸信息的获取具备可重复性;另外,本申请采用了多点同时采集目标人体呼吸时体表表面压力信息,配合人体解剖做相关性分析的技术方案,可进一步得到目标人体的呼吸模式、器官肌肉参与度等个体化呼吸信息。Collecting a pressure signal corresponding to a plurality of different body parts of the target human body; performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body; and obtaining the respiratory signal according to the obtained respiratory signal The respiratory intensity and respiratory rate corresponding to the target human body; the beneficial effects of obtaining more accurate respiratory information by collecting multiple body surface pressure signals, improving the accuracy and reliability of respiratory information acquisition, and further making respiratory information The acquisition is reproducible; in addition, the application uses multiple points to simultaneously collect the surface pressure information of the body surface when the target is breathing, and cooperates with the human anatomy to make a correlation analysis technical solution, which can further obtain the breathing pattern and organ muscle participation of the target human body. Personalized breathing information such as degrees.
基于图1、图2和图3所描述的一种呼吸信息的获取方法,本发明还提供了一种呼吸信息的获取系统;该呼吸信息的获取系统可以实施图1、图2和图3所描述的一种呼吸信息的获取方法,从而达到通过采集人体呼吸时多个部位肌肉运动引起体表压力变化的方式,来获取呼吸信息的目的;如图4所示,本发明一种呼吸信息的获取系统包括:Based on a method for acquiring respiratory information described in FIG. 1, FIG. 2 and FIG. 3, the present invention also provides an acquisition system for respiratory information; the acquisition system of the respiratory information can be implemented in FIG. 1, FIG. 2 and FIG. A method for obtaining respiratory information, thereby achieving the purpose of obtaining respiratory information by collecting a change in body surface pressure caused by muscle movement of a plurality of parts during breathing of the human body; as shown in FIG. 4, the present invention provides a respiratory information The acquisition system includes:
信号采集模块100,用于按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;The signal acquisition module 100 is configured to collect pressure signals corresponding to different body parts of the target human body according to a preset pressure collection manner;
信号处理模块200,用于对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;The signal processing module 200 is configured to perform signal processing on the collected pressure signal, and analyze and obtain a respiratory signal corresponding to the target human body;
信息获取模块300,用于根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。The information acquisition module 300 is configured to acquire, according to the obtained respiratory signal, a respiratory intensity and a respiratory frequency corresponding to the target human body.
在本发明一优选的实施例中,所述多个不同身体部位包括:In a preferred embodiment of the invention, the plurality of different body parts comprises:
目标人体的背部、腰部与胸部。The back, waist and chest of the target human body.
在本发明一优选的实施例中,所述预设压力采集方式包括:In a preferred embodiment of the present invention, the preset pressure collection mode includes:
针对背部与腰部的压力信号采集,可以采用如下采集方式:在目标人体的 背部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上,或者使目标人体躺在设置有压力传感器的可躺卧体板设备上;For the pressure signal acquisition of the back and the waist, the following acquisition methods can be used: a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
针对胸部的压力信号采集,可以采用如下采集方式:在目标人体的胸部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上。For the chest pressure signal acquisition, the following acquisition methods can be used: a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
在本发明一优选的实施例中,所述信号处理模块200用于:In a preferred embodiment of the present invention, the signal processing module 200 is configured to:
对采集的所述压力信号进行模数转换,将采集的动态的压力信号转换为对应的数字信号;Performing analog-to-digital conversion on the collected pressure signal, and converting the collected dynamic pressure signal into a corresponding digital signal;
利用带通滤波器对转换后的数字信号进行滤波处理,消除低频和高频的噪声干扰,得到所述目标人体对应的呼吸信号。The band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
在本发明一优选的实施例中,所述信息获取模块300用于:In a preferred embodiment of the present invention, the information obtaining module 300 is configured to:
根据得到的呼吸信号得到的所述呼吸信号的瞬时幅值,对所述呼吸信号进行频谱分析,得到所述呼吸信号的瞬时频率;Performing a spectrum analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal to obtain an instantaneous frequency of the respiratory signal;
对所述瞬时幅值和瞬时频率分别进行滤波处理,得到所述目标人体对应的呼吸强度和呼吸频率。The instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
本发明呼吸信息的获取系统通过按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率;具有通过采集人体多处体表压力信号来获取更为准确的呼吸信息的有益效果,提高了呼吸信息获取的准确性和可靠性,也进一步使得呼吸信息的获取具备可重复性;另外,本申请采用了多点同时采集目标人体呼吸时体表表面压力信息,配合人体解剖做相关性分析的技术方案,可进一步得到目标人体的呼吸模式、器官肌肉参与度等个体化呼吸信息。The breathing information acquisition system of the present invention collects pressure signals corresponding to different body parts of the target human body according to a preset pressure collecting manner; performs signal processing on the collected pressure signals, and analyzes and obtains breathing corresponding to the target human body. a signal; obtaining a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal; and having the beneficial effect of acquiring more accurate respiratory information by collecting multiple body surface pressure signals, thereby improving respiratory information acquisition The accuracy and reliability also make the acquisition of respiratory information reproducible. In addition, the application adopts multiple points to simultaneously collect the surface pressure information of the body surface when the target is breathing, and cooperates with the human anatomy to do the correlation analysis. Individualized breathing information such as respiratory patterns and organ muscle involvement of the target human body can be further obtained.
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结 合软件和硬件方面的实施例的形式。Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Thus, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (10)

  1. 一种呼吸信息的获取方法,其特征在于,所述呼吸信息的获取方法包括:A method for obtaining respiratory information, characterized in that the method for obtaining the respiratory information comprises:
    按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;According to the preset pressure collection mode, the pressure signals corresponding to different body parts of the target human body are collected;
    对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;Performing signal processing on the collected pressure signal, and analyzing the respiratory signal corresponding to the target human body;
    根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。Obtaining a respiratory intensity and a respiratory frequency corresponding to the target human body according to the obtained respiratory signal.
  2. 如权利要求1所述的呼吸信息的获取方法,其特征在于,所述多个不同身体部位包括:The method for obtaining respiratory information according to claim 1, wherein the plurality of different body parts comprises:
    目标人体的背部、腰部与胸部。The back, waist and chest of the target human body.
  3. 如权利要求1或2所述的呼吸信息的获取方法,其特征在于,所述预设压力采集方式包括:The method for acquiring respiratory information according to claim 1 or 2, wherein the preset pressure collection method comprises:
    针对背部与腰部的压力信号采集,可以采用如下采集方式:在目标人体的背部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上,或者使目标人体躺在设置有压力传感器的可躺卧体板设备上;For the pressure signal acquisition of the back and the waist, the following acquisition methods can be used: a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
    针对胸部的压力信号采集,可以采用如下采集方式:在目标人体的胸部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上。For the chest pressure signal acquisition, the following acquisition methods can be used: a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
  4. 如权利要求1或2所述的呼吸信息的获取方法,其特征在于,所述对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号,包括:The method for acquiring respiratory information according to claim 1 or 2, wherein the signal processing of the collected pressure signal is performed to analyze and obtain a respiratory signal corresponding to the target human body, including:
    对采集的所述压力信号进行模数转换,将采集的动态的压力信号转换为对 应的数字信号;Performing analog-to-digital conversion on the collected pressure signal to convert the collected dynamic pressure signal into a corresponding digital signal;
    利用带通滤波器对转换后的数字信号进行滤波处理,消除低频和高频的噪声干扰,得到所述目标人体对应的呼吸信号。The band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
  5. 如权利要求1或2所述的呼吸信息的获取方法,其特征在于,所述根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率,包括:The method for obtaining respiratory information according to claim 1 or 2, wherein the acquiring the respiratory intensity and the respiratory rate corresponding to the target human body according to the obtained respiratory signal comprises:
    根据得到的呼吸信号得到的所述呼吸信号的瞬时幅值,对所述呼吸信号进行频谱分析,得到所述呼吸信号的瞬时频率;Performing a spectrum analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal to obtain an instantaneous frequency of the respiratory signal;
    对所述瞬时幅值和瞬时频率分别进行滤波处理,得到所述目标人体对应的呼吸强度和呼吸频率。The instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
  6. 一种呼吸信息的获取系统,其特征在于,所述呼吸信息的获取系统包括:A system for acquiring respiratory information, characterized in that the system for acquiring respiratory information comprises:
    信号采集模块,用于按照预设压力采集方式,采集目标人体多个不同身体部位所分别对应的压力信号;The signal acquisition module is configured to collect pressure signals corresponding to different body parts of the target human body according to a preset pressure collection manner;
    信号处理模块,用于对采集的所述压力信号进行信号处理,分析得到所述目标人体对应的呼吸信号;a signal processing module, configured to perform signal processing on the collected pressure signal, and analyze and obtain a respiratory signal corresponding to the target human body;
    信息获取模块,用于根据得到的所述呼吸信号,获取所述目标人体对应的呼吸强度和呼吸频率。And an information acquiring module, configured to acquire, according to the obtained respiratory signal, a respiratory intensity and a respiratory frequency corresponding to the target human body.
  7. 如权利要求6所述的呼吸信息的获取系统,其特征在于,所述多个不同身体部位包括:The respiratory information acquisition system of claim 6 wherein said plurality of different body parts comprises:
    目标人体的背部、腰部与胸部。The back, waist and chest of the target human body.
  8. 如权利要求6或7所述的呼吸信息的获取系统,其特征在于,所述预设压力采集方式包括:The system for acquiring respiratory information according to claim 6 or 7, wherein the preset pressure collection method comprises:
    针对背部与腰部的压力信号采集,可以采用如下采集方式:在目标人体的 背部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上,或者使目标人体躺在设置有压力传感器的可躺卧体板设备上;For the pressure signal acquisition of the back and the waist, the following acquisition methods can be used: a pressure sensor is arranged on the back of the target human body, or the wearable pressure sensing device is placed on the target human body, or the target human body is placed on the target with a pressure sensor. Recumbent body board equipment;
    针对胸部的压力信号采集,可以采用如下采集方式:在目标人体的胸部设置压力传感器,或者将可穿戴式压力传感设备配置在目标人体身上。For the chest pressure signal acquisition, the following acquisition methods can be used: a pressure sensor is placed on the chest of the target human body, or a wearable pressure sensing device is placed on the target human body.
  9. 如权利要求6或7所述的呼吸信息的获取系统,其特征在于,所述信号处理模块用于:The respiratory information acquisition system according to claim 6 or 7, wherein the signal processing module is configured to:
    对采集的所述压力信号进行模数转换,将采集的动态的压力信号转换为对应的数字信号;Performing analog-to-digital conversion on the collected pressure signal, and converting the collected dynamic pressure signal into a corresponding digital signal;
    利用带通滤波器对转换后的数字信号进行滤波处理,消除低频和高频的噪声干扰,得到所述目标人体对应的呼吸信号。The band-pass filter is used to filter the converted digital signal to eliminate low-frequency and high-frequency noise interference, and obtain a respiratory signal corresponding to the target human body.
  10. 如权利要求6或7所述的呼吸信息的获取系统,其特征在于,所述信息获取模块用于:The system for acquiring respiratory information according to claim 6 or 7, wherein the information acquisition module is configured to:
    根据得到的呼吸信号得到的所述呼吸信号的瞬时幅值,对所述呼吸信号进行频谱分析,得到所述呼吸信号的瞬时频率;Performing a spectrum analysis on the respiratory signal according to the instantaneous amplitude of the respiratory signal obtained from the obtained respiratory signal to obtain an instantaneous frequency of the respiratory signal;
    对所述瞬时幅值和瞬时频率分别进行滤波处理,得到所述目标人体对应的呼吸强度和呼吸频率。The instantaneous amplitude and the instantaneous frequency are respectively subjected to filtering processing to obtain a respiratory intensity and a respiratory frequency corresponding to the target human body.
PCT/CN2019/078848 2018-04-28 2019-03-20 Method and system for acquiring respiration information WO2019205841A1 (en)

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