CN112568880A - Optical fiber sensing system and method for monitoring respiration rate - Google Patents

Optical fiber sensing system and method for monitoring respiration rate Download PDF

Info

Publication number
CN112568880A
CN112568880A CN202011158382.2A CN202011158382A CN112568880A CN 112568880 A CN112568880 A CN 112568880A CN 202011158382 A CN202011158382 A CN 202011158382A CN 112568880 A CN112568880 A CN 112568880A
Authority
CN
China
Prior art keywords
liquid
optical fiber
thin tube
vital sign
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011158382.2A
Other languages
Chinese (zh)
Inventor
汤国玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Jiantian Electronics Co ltd
Original Assignee
Hefei Jiantian Electronics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Jiantian Electronics Co ltd filed Critical Hefei Jiantian Electronics Co ltd
Priority to CN202011158382.2A priority Critical patent/CN112568880A/en
Publication of CN112568880A publication Critical patent/CN112568880A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A61B5/02055—Simultaneously evaluating both cardiovascular condition and temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0816—Measuring devices for examining respiratory frequency
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0826—Detecting or evaluating apnoea events
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1113—Local tracking of patients, e.g. in a hospital or private home
    • A61B5/1115—Monitoring leaving of a patient support, e.g. a bed or a wheelchair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1118—Determining activity level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4818—Sleep apnoea
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements 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
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6892—Mats

Landscapes

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

Abstract

The invention discloses an optical fiber sensing system and method for monitoring respiration rate, which comprises the following steps: the device comprises a soft liquid bag, a thin tube, a conduit for connecting the soft liquid bag and the thin tube, an optical fiber sensor arranged in the thin tube and a vital sign acquisition and monitoring module; wherein the liquid soft bag is communicated with the conduit through liquid placed in the tubule; the optical fiber sensor is used for measuring the position change of the liquid in the thin tube and sending related data to the vital sign acquisition monitoring module; the vital sign acquisition monitoring module is used for processing according to the received measurement data of the optical fiber sensor and extracting the vital sign data of the human body. The optical fiber sensing system for monitoring the respiration rate has the advantages of simple structure, long-term use, comfortable use, good universality and convenience for household use.

Description

Optical fiber sensing system and method for monitoring respiration rate
Technical Field
The invention relates to the technical field of respiratory monitoring processing, in particular to an optical fiber sensing system and method for monitoring respiratory rate.
Background
The outbreak of the new coronavirus (COVID-19) has a great influence on human beings because of the superstrong infectivity and toxicity of the virus and the insufficient support of the existing medical system, and because of the shortages of epidemic prevention and detection related technologies, the lack of a comprehensive, systematic and universal new coroneumoniae detection method and the inability to find infected persons in time and in a large area, so that the infection range cannot be controlled in time.
In addition, people recovering from the new coronavirus may have tachypnea expression for months, and experts call for the related research as soon as possible to investigate the continuous influence of the new coronavirus on human bodies. In addition, shortness of breath is also a signal that the illness condition of the new coronary pneumonia patient changes from mild to severe.
While respiratory rate is an important medical indicator for assessing lung function, lung lesions can lead to elevated respiratory rates. The respiratory rate of the new coronary rehabilitation patient is monitored for a long time, self data comparison is carried out, and the research of the continuous influence of the new coronary virus on the pulmonary function of the human body is facilitated. At present, hospitals generally use a binding type respiration detection belt or a patch type sensor at nostrils to detect respiration rate, however, the two schemes have the problem of inconvenient use and are difficult to use at home.
In view of the above problems in the prior art, there is a need for development and research to provide a solution that can be used for a long time, is comfortable to use, and is convenient for home use.
The above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.
Disclosure of Invention
It is an object of the present invention to provide a fiber optic sensing system and method for monitoring respiration rate that addresses at least one of the above-mentioned problems of the background art.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
a fiber optic sensing system for monitoring respiration rate comprising: the device comprises a soft liquid bag, a thin tube, a conduit for connecting the soft liquid bag and the thin tube, an optical fiber sensor arranged in the thin tube and a vital sign acquisition and monitoring module; wherein the liquid soft bag is communicated with the conduit through liquid placed in the tubule; the optical fiber sensor is used for measuring the position change of the liquid in the thin tube and sending related data to the vital sign acquisition monitoring module; the vital sign acquisition monitoring module is used for processing according to the received measurement data of the optical fiber sensor and extracting the vital sign data of the human body.
In some embodiments, the soft body is coated on the surface of the liquid soft bag, and the soft body is in contact with an external human body to sense the acting force generated by the vital sign activity of the human body.
In some embodiments, the vital sign acquisition monitoring module includes a display screen, and the extracted human vital sign data is displayed in real time through the display screen.
In some embodiments, the fiber optic sensor is mounted and fixed in a tubule; the optical fiber sensor includes a light source, an optical fiber, and a light sensation.
In some embodiments, the optical fiber is provided with a core reveal region configured such that a core of the optical fiber is exposed to a fiber cladding.
In some embodiments, the core reveal region is formed by polishing the cladding of the optical fiber to expose the core; one part of the fiber core exposure area is positioned in the liquid, the other part of the fiber core exposure area is positioned in the gas, so that one part of the fiber core is contacted with the gas in the thin tube to form a fiber core-gas interface, and the other part of the fiber core is contacted with the liquid in the thin tube to form a fiber core-liquid interface.
In some embodiments, the light source of the fiber optic sensor is disposed in air within the tube and the light sensor is disposed in liquid within the tube.
In some embodiments, the liquid temperature control module is further included, and a temperature sensor is arranged on the soft body and used for detecting the temperature of the human body and the liquid soft bag.
The other technical scheme of the embodiment of the invention is as follows:
a method of monitoring respiration rate comprising the steps of:
s10, providing a liquid soft bag in contact with an external human body to sense acting force generated by vital sign activities of the human body;
s20, providing an optical fiber sensor; the optical fiber sensor is arranged in a thin tube, the thin tube is communicated with the soft liquid bag through a guide tube, so that the liquid can flow in the soft liquid bag and the thin tube through the guide tube, the thin tube is filled with gas and the liquid, and the position change of the liquid in the thin tube is measured through the optical fiber sensor;
and S30, providing a vital sign acquisition and monitoring module for processing according to the received measurement data of the optical fiber sensor, extracting vital sign data of the human body, and displaying the extracted vital sign data of the human body in real time.
In some embodiments, the optical fiber sensor is provided with a core reveal region configured to expose a core of the optical fiber to a fiber cladding; one part of the fiber core exposure area is located in liquid, the other part of the fiber core exposure area is located in gas, so that one part of the fiber core is in contact with the gas in the thin tube to form a fiber core-gas interface, and the other part of the fiber core is in contact with the liquid in the thin tube to form a fiber core-liquid interface.
The technical scheme of the invention has the beneficial effects that:
compared with the prior art, the optical fiber sensing system for monitoring the respiration rate has the advantages of simple structure, long-term use, comfortable use, good universality and convenience for household use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a fiber optic sensing system for monitoring respiration rate according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a fiber optic sensing system for monitoring respiration rate according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a partial configuration of a fiber optic sensing system for monitoring respiration rate according to one embodiment of the present invention;
FIG. 4 is a schematic optical path diagram of a fiber optic sensing system for monitoring respiration rate according to one embodiment of the present invention;
FIG. 5 is a flowchart illustration of a method of monitoring a respiration rate according to another embodiment of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the embodiments of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. The connection may be for fixation or for circuit connection.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-3, fig. 1 is a fiber sensing system 100 for monitoring a respiration rate according to an embodiment of the present invention, which includes a soft liquid bag 10, a tubule 20, a conduit 30 connecting the soft liquid bag 10 and the tubule 20, a fiber sensor 40 disposed in the tubule 20, and a vital sign collecting and monitoring module (not shown); wherein, the liquid soft bag 10 and the tubule 20 are filled with liquid 50 and communicated through the conduit 30; the optical fiber sensor 40 is used for measuring the position change of the liquid 50 in the thin tube 20 and sending related data to the vital sign acquisition monitoring module; the vital sign acquisition and monitoring module is used for processing according to the received measurement data of the optical fiber sensor and extracting vital sign data of a human body; in some embodiments, the vital sign collecting and monitoring module includes a display screen 60, and the extracted human vital sign data is displayed in real time through the display screen 60.
Specifically, the surface of the soft liquid bag 10 is coated with a soft body 70, and the soft body 70 is in contact with an external human body to sense the acting force generated by the vital sign movement of the human body; it should be noted that, in some embodiments, the liquid soft bag may also be directly contacted with the external human body through the surface of the liquid soft bag. The liquid soft bag is made of a high-elasticity polymer material capable of being reversibly deformed, has high sensitivity to external pressure change, and can sense weak pressure change, such as rubber; the soft body is made of flexible materials, and can accurately transmit external pressure changes to the liquid soft bag.
One end of the conduit 30 is connected with the soft liquid bag 10, and the other end is connected with the thin tube 20, so that the liquid 50 can flow in the soft liquid bag 10 and the thin tube 20 through the conduit 30; wherein the surface of the catheter 30 has a low sensitivity to external pressure variations, i.e. the variations in external pressure acting on the catheter generally do not cause a change in the thickness of the catheter.
The thin tube 20 is filled with gas and the liquid, in the embodiment of the present invention, the thin tube is vertically placed, and the gas is located above the liquid; of course, the thin tube 20 may be horizontally disposed or disposed in other manners, and is not particularly limited in the embodiment of the present invention; wherein, the one end that the tubule was filled with gas is connected with atmospheric pressure control module to be used for controlling the physical and chemical parameters such as the volume of gas, temperature and the quantity of material in the tubule. The tubule 20 may have low sensitivity to external pressure changes, i.e., external pressure changes acting on the tubule generally do not cause the shape of the tubule to change. In the embodiment of the invention, the thin tube is in a regular column shape; it will be appreciated that in some embodiments, the tubules may also be irregularly shaped.
The optical fiber sensor 40 is installed and fixed in the tubule 20; the optical fiber sensor comprises a light source 401, an optical fiber 402 and a light sensor 403; wherein the optical fiber is provided with a core reveal region 403, the core reveal region 403 being configured such that the core of the optical fiber is exposed to the fiber cladding; in some embodiments, the core reveal region is formed by polishing the cladding of the optical fiber to expose the core; one part of the fiber core exposure area is positioned in the liquid, the other part of the fiber core exposure area is positioned in the gas, so that one part of the fiber core is contacted with the gas in the thin tube to form a fiber core-gas interface, and the other part of the fiber core is contacted with the liquid in the thin tube to form a fiber core-liquid interface.
In the embodiment of the present invention, the light source 401 of the optical fiber sensor 40 is disposed in the air inside the thin tube, and the light sensor 402 is disposed in the liquid inside the thin tube. Of course, the placement of the light source and the light sensation can be switched, i.e., the light source will be in the liquid inside the tube and the light sensation in the air inside the tube. The following description will be given taking an example in which the light source is in the air inside the thin tube.
Referring to fig. 3 and 4, light emitted from a light source 401 enters the optical fiber 40, and light transmitted in the optical fiber 40 is reflected and refracted at a core-gas interface and a core-liquid interface in a core exposure region 403, and the light intensity reflectivity of the light in the optical fiber is different at the two interfaces, namely the core-gas interface and the core-liquid interface, because the refractive indexes of the two media, namely gas and liquid, are different. If the reflectivity is high, the loss of light transmitted in the optical fiber is small, and conversely, if the reflectivity is low, the loss of light is high, the intensity of light received by the light sensor is low, and the intensity of light received by the light sensor is in direct proportion to the reflectivity of the intensity of light at the interface, so that the low height (or length) of the liquid in the tubule directly influences the intensity of light received by the light sensor. Therefore, by carrying out calibration in advance, the position change information of the liquid in the thin tube can be obtained by calculation according to the light intensity change received at the light sensation part, and the height (or the length) of the liquid in the thin tube is obtained. Wherein the optical fiber is vertically positioned with a height and horizontally positioned with a length.
Specifically, the light intensity reflectivity at the interface is further analyzed and explained with reference to fig. 4, wherein the refractive index of medium 1 is n1, the refractive index of medium 2 is n2, the light with the incident angle i1 is reflected and refracted at the interface of medium 1 and medium 2, and the refraction angle is i2, then according to the chenille theorem, the light intensity reflectivity R of the reflected light is:
Figure BDA0002743490390000071
Figure BDA0002743490390000072
it can be seen that at a constant value of the refractive index n1 of the medium 1 at the incident angle i1, the reflectance R of the light intensity is a function of the refractive index n2 of the medium 2, i.e. the intensity of the reflected light is modulated by the refractive index n2 of the medium 2.
In the embodiment of the present invention, the light source 401 is a red light emitting diode, the optical fiber is a plastic optical fiber, the light sensor 402 is a photodiode, the thin tube is an opaque black PE tube, the gas is indoor air, and the liquid is purified water. It should be noted that, in some other embodiments, the light source may also be other light-emitting devices, the optical fiber may also be an optical fiber made of other materials, and the light sensation, the capillary tube, and the gas and the liquid may also be other alternatives.
Referring to FIGS. 1 and 3, the pressure at the conduit 30 is denoted as PBWhen the pressure is PBIs the pressure P of gas in tubule 40AWith liquid pressure PLAnd (c) the sum, i.e.:
PB＝PA+PL＝nRT/v+ρgh＝nRT/s(L-h)+ρgh
gas pressure PAnRT/s (L-h), liquid pressure PLρ gh; where n is the amount of gaseous species, R is a constant, T is the gas temperature, ρ is the liquid density, and g is the acceleration of gravity.
When the air pressure control module seals the air in the thin tube, namely n is a fixed value, the air suction of the human body is transmitted to the liquid soft bag, so that the pressure born by the liquid soft bag is increased (namely P)BIncreased), n, R, L, s, rho and g are all constant values in the process, and the temperature T of the gas in the tubule is also constant value in the process because the breathing process is gentle. When the human body inhalesBDuring the increase, the gas pressure PAIs proportional to h, and the liquid pressure ρ gh is proportional to h, i.e. PBAnd h is in direct proportion to h, h can be increased, the size change of h can be detected by the optical fiber sensor, the inspiration process of the human body is quantized, and the respiration rate is monitored.
By using the air pressure control module, n of the air becomes variable, and the air pressure PAProportional to n, when R, L, s, rho and g are constant values, PBWhen the variation is constant, the smaller n and the larger h are varied, the higher the detection precision of the optical fiber sensor is, so that the air pressure control module can improve the detection precision. When the size of the thin tube is fixed with liquid and gas materials, the size of n can be adjusted through the air pressure control module so as to adjust the breath detection precision, and the smaller n is, the higher the precision is.
On the other hand, PBIs proportional to h, at PBThe smaller s is, the larger h is, and so onSo that the thinner the tubule is, the higher the detection accuracy of the optical fiber sensor can be, by improving the size of the tubule.
When the device is applied, the soft liquid bag is close to a human body, force generated by vital activities such as respiration, heartbeat and body movement of the human body acts on the soft liquid bag, so that the change of the position of the liquid in the thin tube is caused, the change of the position of the liquid is detected by the optical fiber sensor, and the data of the optical fiber sensor is transmitted to the vital sign acquisition monitoring module for processing, so that the vital sign data of the human body is extracted; wherein the vital sign data includes but is not limited to respiration rate, respiration waveform, heart rate, heartbeat waveform, in/out-of-bed, body movement, snoring and other related information data.
Referring to fig. 2, in some embodiments, a liquid temperature control module is further included, a temperature sensor 80 is disposed on the soft body 70, and is used for detecting the temperature of the human body and the soft liquid bag, and data of the temperature sensor is uploaded to the vital sign collecting and monitoring module and the liquid temperature control module.
In some embodiments, the particular form of the soft body includes, but is not limited to, a pillow, mattress, cushion, clothing, and the like.
Referring to fig. 5, as another embodiment of the present invention, a method for detecting a respiration rate includes the steps of:
s10, providing a liquid soft bag in contact with an external human body to sense acting force generated by vital sign activities of the human body;
the liquid soft bag is made of a high-elasticity polymer material capable of being reversibly deformed, has high sensitivity to external pressure changes, and can sense weak pressure changes, such as rubber. In some embodiments, a soft body may also be coated on the surface of the liquid soft bag, and the soft body is in contact with an external human body to sense an acting force generated by vital sign activities of the human body.
S20, providing an optical fiber sensor; the optical fiber sensor is arranged in a thin tube, the thin tube is communicated with the soft liquid bag through a guide tube, so that liquid can flow in the soft liquid bag and the thin tube through the guide tube, gas and the liquid are filled in the thin tube, the position change of the liquid in the thin tube is measured through the optical fiber sensor, and the effect of force generated by vital sign activity of a human body is acquired;
in particular, the optical fiber sensor is provided with a core reveal region configured such that a core of the optical fiber is exposed to a fiber cladding; one part of the fiber core exposure area is positioned in the liquid, the other part of the fiber core exposure area is positioned in the gas, so that one part of the fiber core is contacted with the gas in the thin tube to form a fiber core-gas interface, and the other part of the fiber core is contacted with the liquid in the thin tube to form a fiber core-liquid interface. The light emitted by the light source enters the optical fiber, the light transmitted in the optical fiber is received by light sensation after being refracted and reflected at the fiber core-gas interface and the fiber core-liquid interface in the fiber core exposure area, and the position change information of the liquid in the tubule can be obtained through calculation according to the light intensity change received by the light sensation.
And S30, providing a vital sign acquisition and monitoring module for processing according to the received measurement data of the optical fiber sensor, extracting vital sign data of the human body, and displaying the extracted vital sign data of the human body in real time.
Wherein the vital sign data includes, but is not limited to, respiration rate, respiration waveform, heart rate, heartbeat waveform, in/out of bed, body movement, snoring, etc.
The invention also proposes a computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the method of detecting a breathing rate according to the above-mentioned embodiments. The storage medium may be implemented by any type of volatile or non-volatile storage device, or combination thereof.
Embodiments of the present invention may comprise or utilize a special purpose or general-purpose computer including computer hardware, as discussed in greater detail below. Embodiments within the scope of the present invention also include physical and other computer-readable media for carrying or storing computer-executable instructions and/or data structures. Such computer-readable media can be any available media that can be accessed by a general purpose or special purpose computer system. The computer-readable medium storing the computer-executable instructions is a physical storage medium. Computer-readable media carrying computer-executable instructions are transmission media. Thus, by way of example, and not limitation, embodiments of the invention can include at least two distinct computer-readable media: physical computer-readable storage media and transmission computer-readable media.
The present embodiment also provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement at least the method for detecting a respiration rate in the foregoing embodiment.
It is to be understood that the foregoing is a more detailed description of the invention, and that specific embodiments are not to be considered as limiting the invention. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and these substitutions and modifications should be considered to fall within the scope of the invention. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.
In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the invention as defined by the appended claims.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. One of ordinary skill in the art will readily appreciate that the above-disclosed, presently existing or later to be developed, processes, machines, manufacture, compositions of matter, means, methods, or steps, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.

Claims (10)

1. A fiber optic sensing system for monitoring respiration rate, comprising: the device comprises a soft liquid bag, a thin tube, a conduit for connecting the soft liquid bag and the thin tube, an optical fiber sensor arranged in the thin tube and a vital sign acquisition and monitoring module; wherein the liquid soft bag is communicated with the conduit through liquid placed in the tubule; the optical fiber sensor is used for measuring the position change of the liquid in the thin tube and sending related data to the vital sign acquisition monitoring module; the vital sign acquisition monitoring module is used for processing according to the received measurement data of the optical fiber sensor and extracting the vital sign data of the human body.
2. A fiber optic sensing system for monitoring respiration rate according to claim 1 wherein: the soft body is coated on the surface of the liquid soft bag and is contacted with an external human body so as to sense acting force generated by the vital sign movement of the human body.
3. A fiber optic sensing system for monitoring respiration rate according to claim 2 wherein: the vital sign acquisition monitoring module comprises a display screen, and the extracted human vital sign data is displayed in real time through the display screen.
4. A fiber optic sensing system for monitoring respiration rate according to claim 3 wherein: the optical fiber sensor is installed and fixed in the thin tube; the optical fiber sensor includes a light source, an optical fiber, and a light sensation.
5. The fiber optic sensing system for monitoring respiration rate of claim 4 wherein: the optical fiber is provided with a core reveal region configured such that a core of the optical fiber is exposed to a fiber cladding.
6. The fiber optic sensing system for monitoring respiration rate of claim 5 wherein: the fiber core exposure area is formed by polishing a cladding of the optical fiber to expose the fiber core; one part of the fiber core exposure area is positioned in the liquid, the other part of the fiber core exposure area is positioned in the gas, so that one part of the fiber core is contacted with the gas in the thin tube to form a fiber core-gas interface, and the other part of the fiber core is contacted with the liquid in the thin tube to form a fiber core-liquid interface.
7. The fiber optic sensing system for monitoring respiration rate of claim 6 wherein: the light source of the optical fiber sensor is arranged to be in air in the thin tube, and the light sensor is arranged to be in liquid in the thin tube.
8. The fiber optic sensing system for monitoring respiration rate of claim 7 wherein: the liquid temperature control device is characterized by further comprising a liquid temperature control module, wherein a temperature sensor is arranged on the soft body and used for detecting the temperature of a human body and the liquid soft bag.
9. A method of monitoring respiration rate, comprising the steps of:
s10, providing a liquid soft bag in contact with an external human body to sense acting force generated by vital sign activities of the human body;
s20, providing an optical fiber sensor; the optical fiber sensor is arranged in a thin tube, the thin tube is communicated with the soft liquid bag through a guide tube, so that the liquid can flow in the soft liquid bag and the thin tube through the guide tube, the thin tube is filled with gas and the liquid, and the position change of the liquid in the thin tube is measured through the optical fiber sensor;
and S30, providing a vital sign acquisition and monitoring module for processing according to the received measurement data of the optical fiber sensor, extracting vital sign data of the human body, and displaying the extracted vital sign data of the human body in real time.
10. The method of monitoring a respiration rate of claim 9, wherein: the optical fiber sensor is provided with a core exposure region configured to expose a core of the optical fiber to a fiber cladding; one part of the fiber core exposure area is located in liquid, the other part of the fiber core exposure area is located in gas, so that one part of the fiber core is in contact with the gas in the thin tube to form a fiber core-gas interface, and the other part of the fiber core is in contact with the liquid in the thin tube to form a fiber core-liquid interface.
CN202011158382.2A 2020-10-26 2020-10-26 Optical fiber sensing system and method for monitoring respiration rate Pending CN112568880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011158382.2A CN112568880A (en) 2020-10-26 2020-10-26 Optical fiber sensing system and method for monitoring respiration rate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011158382.2A CN112568880A (en) 2020-10-26 2020-10-26 Optical fiber sensing system and method for monitoring respiration rate

Publications (1)

Publication Number Publication Date
CN112568880A true CN112568880A (en) 2021-03-30

Family

ID=75120389

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011158382.2A Pending CN112568880A (en) 2020-10-26 2020-10-26 Optical fiber sensing system and method for monitoring respiration rate

Country Status (1)

Country Link
CN (1) CN112568880A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920700581A (en) * 1990-03-09 1992-08-10 다니이 아끼오 Sleep detection device
CN103006235A (en) * 2011-09-21 2013-04-03 北京大学深圳研究生院 Mattress-type sleep monitoring and warning device
CN104000566A (en) * 2014-06-09 2014-08-27 宁波瑞诺医疗科技有限公司 Pulse detecting device and detecting method thereof
CN104729628A (en) * 2015-03-25 2015-06-24 浙江工业大学 Fiber-based liquid level sensor and liquid level measurement method
CN111387967A (en) * 2020-04-15 2020-07-10 上海贝氪若宝健康科技有限公司 Separately excited vibration type physical sign sensor
CN214965484U (en) * 2020-10-26 2021-12-03 合肥健天电子有限公司 Optical fiber sensing system for monitoring respiratory rate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920700581A (en) * 1990-03-09 1992-08-10 다니이 아끼오 Sleep detection device
CN103006235A (en) * 2011-09-21 2013-04-03 北京大学深圳研究生院 Mattress-type sleep monitoring and warning device
CN104000566A (en) * 2014-06-09 2014-08-27 宁波瑞诺医疗科技有限公司 Pulse detecting device and detecting method thereof
CN104729628A (en) * 2015-03-25 2015-06-24 浙江工业大学 Fiber-based liquid level sensor and liquid level measurement method
CN111387967A (en) * 2020-04-15 2020-07-10 上海贝氪若宝健康科技有限公司 Separately excited vibration type physical sign sensor
CN214965484U (en) * 2020-10-26 2021-12-03 合肥健天电子有限公司 Optical fiber sensing system for monitoring respiratory rate

Similar Documents

Publication Publication Date Title
US20230248260A1 (en) Devices, systems, and methods for aiding in the detection of a physiological abnormality
Davis et al. Basic physics and measurement in anaesthesia
US10231667B2 (en) Non-invasive dehydration monitoring
KR101607116B1 (en) System for measuring and recording a user's vital signs
US20150196251A1 (en) System and method for monitoring human water loss through expiration and perspiration
KR100706954B1 (en) Device for measuring the flow rate of ringer solution
RU2010150471A (en) CONTACTLESS RESPIRATION OF A PATIENT'S RESPIRATION AND AN OPTICAL SENSOR FOR MEASUREMENT BY PHOTO PLETISMOGRAPHY
JPWO2011104888A1 (en) Pulse oximeter
CN112190255B (en) Wearable respiration monitoring equipment based on D-type plastic optical fiber
US20150126889A1 (en) Spirometer comprising piezoelectric sensor
CN214965484U (en) Optical fiber sensing system for monitoring respiratory rate
CN109475304A (en) System and method for monitoring asthma symptoms
US8361801B2 (en) Devices, systems, and methods for aiding in the detection of a physiological abnormality
US20220313160A1 (en) Estimating hydration using capillary refill time
CN113749640A (en) Portable nasal respiration function detection device
CN112568880A (en) Optical fiber sensing system and method for monitoring respiration rate
WO2020008380A1 (en) Method for carrying out oxymetric tests and medical apparatus with an improved oxymetric device with a reflective sensor
CN205286366U (en) Physiological monitoring device
CN215227579U (en) Central venous pressure measuring instrument
CN106539578A (en) Physiological parameter detection method and device
CN209463994U (en) Blood oxygen probe and blood oxygen measuring device
Pettersson et al. Optical aspects of a fibre-optic sensor for respiratory rate monitoring
Clough Recommendations for peak flow monitoring in children
KR100662527B1 (en) A portable spirometer for measuring lung capacity and respiration gas
US20240032816A1 (en) Method and apparatus for real time respiratory monitoring using embedded fiber bragg gratings

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination