CN112190255B - Wearable respiration monitoring equipment based on D-type plastic optical fiber - Google Patents
Wearable respiration monitoring equipment based on D-type plastic optical fiber Download PDFInfo
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- CN112190255B CN112190255B CN202011131153.1A CN202011131153A CN112190255B CN 112190255 B CN112190255 B CN 112190255B CN 202011131153 A CN202011131153 A CN 202011131153A CN 112190255 B CN112190255 B CN 112190255B
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
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- 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
- A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
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- 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
- A61B5/113—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb occurring during breathing
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- 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
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- 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
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6823—Trunk, e.g., chest, back, abdomen, hip
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- 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
- A61B5/683—Means for maintaining contact with the body
- A61B5/6831—Straps, bands or harnesses
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- Oral & Maxillofacial Surgery (AREA)
- Pulmonology (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 relates to a wearable respiration monitoring device based on a D-type plastic optical fiber. The device comprises a light source, a plastic optical fiber, a fixing belt, a fixing block, a fixing plate, a photoelectric detector module, a signal acquisition module and a terminal; the light source is connected with the input end of the photoelectric detector module through plastic optical fibers, the output end of the photoelectric detector module is connected with the input end of the signal acquisition module, and the output end of the signal acquisition module is connected with the terminal; the fixing belt is fixed at the abdomen position of the user through the fixing part, and the fixing plate is positioned in the middle of the abdomen; the sensing area generates bending deformation according to abdomen deformation caused by respiration of a user, light is caused to escape and increase, and then the voltage value output by the photoelectric detector module is changed, the signal acquisition module transmits the voltage change value to the terminal, and the terminal monitors the respiration rate of the user according to the voltage change value. The invention has the characteristics of low cost, high sensitivity and being wearable.
Description
Technical Field
The invention relates to the field of sensors, in particular to a wearable respiration monitoring device based on a D-type plastic optical fiber.
Background
Respiration is an important sign of life. Monitoring human respiration provides critical information for health assessment, diagnosis, and treatment of respiratory diseases. Respiration rate provides valuable information for non-invasive diagnostics, e.g., respiration rate is measured by counting the number of pulses of respiration (i.e., breaths per minute) in a minute, typically between 14-22 times for healthy adults. Therefore, it is becoming more and more important to detect the respiration rate of a person in daily life.
The current common means for monitoring respiration are the following:
1. humidity sensor
The respiration of a person increases the humidity or water content of the surrounding environment. The change in concentration of water molecules in the breath provides a potential signal for the humidity sensor to track the breath. The retractable humidity sensor detects respiration by converting humidity changes into electrical signals. Humidity sensors are generally classified into resistive humidity sensors and capacitive humidity sensors, and the resistive humidity sensors have fast response speed and small volume, but are difficult to detect in a low humidity range and are easily affected by interference; the capacitive humidity sensor has high response speed, small hysteresis of humidity and lower precision.
2. Pressure sensor
Pressure sensors attached to the skin beneath the nostrils or mounted on the mask provide a method of monitoring respiration. During respiration, the airflow from the nasal cavity exerts pressure on the sensor, causing its electrical response to change. However, these sensors require an external power source to power their operation, and it is difficult to achieve both high sensitivity and scalability.
Based on the foregoing, there is a need to provide a low cost, wearable, high sensitivity respiratory monitoring device.
Disclosure of Invention
The invention aims to provide a wearable respiration monitoring device based on a D-type plastic optical fiber, which has the characteristics of low cost, high sensitivity and the like.
In order to achieve the above object, the present invention provides the following solutions:
a wearable respiratory monitoring device based on D-type plastic optical fiber, comprising: the device comprises a light source, plastic optical fibers, a fixing belt, a fixing block, a fixing plate, a photoelectric detector module, a signal acquisition module and a terminal;
the light source is connected with the input end of the photoelectric detector module through the plastic optical fiber, the output end of the photoelectric detector module is connected with the input end of the signal acquisition module, and the output end of the signal acquisition module is connected with the terminal;
the plastic optical fiber comprises a sensing area; the sensing area is an area where the plastic optical fiber is subjected to side polishing treatment; the sensing area is fixed on a fixed plate, the optical fiber inlet and the optical fiber outlet of the fixed plate are both provided with fixed blocks, and the fixed plate is sewn on the fixed belt;
the fixing belt is fixed at the abdomen position of the user through the fixing part, and the fixing plate is positioned in the middle of the abdomen; the sensing area generates bending deformation according to abdomen deformation caused by respiration of the user, light escape is increased, the voltage value output by the photoelectric detector module is changed, the signal acquisition module transmits the voltage change value to the terminal, and the terminal monitors the respiration rate of the user according to the voltage change value.
Optionally, the plastic optical fiber has an outer diameter of 1.3mm and a core diameter of 1mm.
Optionally, the side polishing length of the sensing area is 1cm-6cm, and the side polishing depth is 0.2mm-0.8mm.
Optionally, the light source is a light emitting diode.
Optionally, the fixing block is solidified AB glue, and the fixing block is used for fixing the sensing area.
Optionally, the fixing plate is a transparent plastic plate.
Optionally, the fixing part is a magic tape fixedly connected to two ends of the fixing belt.
Optionally, the fixing band is a telescopic elastic band.
Optionally, the terminal is a computer, and the terminal is used for displaying, storing and processing the received voltage variation value in real time.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the wearable respiration monitoring equipment based on the D-type plastic optical fiber, the fixing plate is located in the middle of the abdomen by the fixing belt, even if the sensing area is located in the middle of the abdomen of a user, the sensing area generates bending deformation according to abdomen deformation caused by respiration of the user, light escape is increased, light signals are attenuated, voltage values output by the photoelectric detector module are further changed, the voltage change values are further transmitted to the terminal by the signal acquisition module, and the terminal monitors the respiration rate of the user according to the voltage change values. The invention does not need an external power supply to provide power for the work of the device, and simultaneously realizes the characteristics of high sensitivity, scalability and low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a wearable respiration monitoring device based on a D-type plastic optical fiber provided by the invention;
FIG. 2 is a block diagram of an embodiment of a wearable respiratory monitoring device based on D-type plastic optical fiber provided by the present invention;
fig. 3 is a schematic diagram of data related to normal respiration obtained by a wearable respiration monitoring device based on D-type plastic optical fiber according to the present invention;
fig. 4 is a schematic diagram of data related to breathing after exercise obtained by a wearable breathing monitoring device based on D-type plastic optical fiber according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a wearable respiration monitoring device based on a D-type plastic optical fiber, which has the characteristics of low cost, high sensitivity and the like.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Fig. 1 is a schematic structural diagram of a wearable respiration monitoring device based on a D-type plastic optical fiber according to the present invention, as shown in fig. 1, the wearable respiration monitoring device based on a D-type plastic optical fiber according to the present invention includes: the device comprises a light source 1, plastic optical fibers 2, a fixing belt 3, a fixing block 4, a fixing plate 5, a photoelectric detector module 6, a signal acquisition module 7 and a terminal 8.
The light source 1 is connected with the input end of the photoelectric detector module 6 through the plastic optical fiber 2, the output end of the photoelectric detector module 6 is connected with the input end of the signal acquisition module 7, and the output end of the signal acquisition module 7 is connected with the terminal 8. Further, the photodetector module 6 is connected with the signal acquisition module 7 through a wire 9.
The photodetector module 6 is used for converting the received optical signal into a voltage signal.
The plastic optical fiber 2 comprises a sensing area 201; the sensing area 201 is an area where the plastic optical fiber 2 is subjected to side polishing treatment; the sensing area 201 is fixed on the fixing plate 5, the optical fiber inlet and the optical fiber outlet of the fixing plate 5 are respectively provided with the fixing block 4, and the fixing plate 5 is sewn on the fixing belt 3. The side polishing length of the sensing area 201 is 1cm-6cm, and the side polishing depth is 0.2mm-0.8mm.
As shown in fig. 2, the fixing band 3 is fixed at the abdomen position of the user by the fixing part 301, and the fixing plate 5 is positioned at the middle of the abdomen; the sensing area 201 generates bending deformation according to the abdomen deformation caused by the respiration of the user, so as to cause the light escape to increase, and further change the voltage value output by the photoelectric detector module 6, the signal acquisition module 7 transmits the voltage change value to the terminal 8, and the terminal 8 monitors the respiration rate of the user according to the voltage change value. The fixing plate 5 is positioned in the middle of the abdomen, so that the sensitive area of the plastic optical fiber 2 is positioned in the middle of the abdomen, thereby ensuring that the invention has higher sensitivity.
The outer diameter of the plastic optical fiber 2 is 1.3mm, and the fiber core diameter is 1mm.
The light source 1 is a light emitting diode.
The fixing block 4 is solidified AB glue, and the fixing block 4 is used for fixing the sensing area 201.
The fixing plate 5 is a transparent plastic plate.
The fixing portion 301 is a magic tape fixedly connected to two ends of the fixing strap 3.
The fixing band 3 is a telescopic elastic band.
The terminal 8 is a computer, and the terminal 8 is used for displaying, storing and processing the received voltage variation value in real time.
When the wearable respiration monitoring device based on the D-type plastic optical fiber is used, the wearable respiration monitoring device based on the D-type plastic optical fiber is fixed on the abdomen of a human body, the abdomen is deformed when the human body breathes, so that the sensitive area of the plastic optical fiber 2 is driven to generate bending deformation, light is caused to escape and increase, attenuation of an optical signal is caused, and the voltage value output by the photoelectric detector module 6 is changed, so that the respiration rate of the human body is monitored by measuring the change of the voltage signal.
The principle of the monitoring method is as follows:
when the sensitive part is bent, the incident light of the internal light at the interface of the plastic optical fiber 2 and the air is reduced, which leads to the increase of the light intensity transmitted into the air and the decrease of the light intensity reflected back into the plastic optical fiber 2 and detected by the photo detector module 6, the voltage value output by the photo detector module 6 is reduced, and the respiration rate can be monitored according to the change of the output voltage signal of the photo detector module 6.
Fig. 3 is data related to normal respiration obtained by a wearable respiration monitoring device based on D-type plastic optical fiber, fig. 3 (a) is a signal obtained by eliminating baseline drift and interference from an original signal received by a terminal 8 by a wavelet decomposition method, and fig. 3 (b) is a spectrogram obtained by fourier transforming the wavelet decomposed signal. The respiration monitoring device is fixed at the abdomen position of the tester, and the tester breathes normally. The respiration time of the tester is 60s, and the respiration rate is observed to be 0.35Hz, so that the human body normal respiration rate is met.
Fig. 4 is data relating to post-exercise respiration obtained by a wearable respiration monitoring device based on D-type plastic optical fiber. Fig. 4 (a) is a time-frequency diagram obtained by performing time-frequency analysis on the signal after wavelet decomposition, which is a signal after the baseline drift and interference are eliminated by using the wavelet decomposition method on the original signal received by the terminal 8. The respiratory monitoring equipment is fixed at the abdomen of the tester, the respiratory rate of the tester after the movement is monitored in real time, the respiratory rate of the tester after the movement is changed from fast to slow, the respiratory rate of the tester after the movement is observed to be the fastest within 60s, and the respiratory rate of the tester within 15s is about 0.8Hz; the breathing rate of 15s-35s gradually slows down to about 0.55Hz; the respiratory rate returns to normal for 35-60s, about 0.4Hz. The invention can reflect the respiration status in real time, and the monitoring result is accurate.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
1. Wearable respiration monitoring equipment based on D type plastic optical fiber, characterized by, include: the device comprises a light source, plastic optical fibers, a fixing belt, a fixing block, a fixing plate, a photoelectric detector module, a signal acquisition module and a terminal;
the light source is connected with the input end of the photoelectric detector module through the plastic optical fiber, the output end of the photoelectric detector module is connected with the input end of the signal acquisition module, and the output end of the signal acquisition module is connected with the terminal;
the plastic optical fiber comprises a sensing area; the sensing area is an area where the plastic optical fiber is subjected to side polishing treatment; the sensing area is fixed on a fixed plate, the optical fiber inlet and the optical fiber outlet of the fixed plate are both provided with fixed blocks, and the fixed plate is sewn on the fixed belt; the fixing plate is a transparent plastic plate;
the fixing belt is fixed at the abdomen position of the user through the fixing part, and the fixing plate is positioned in the middle of the abdomen; the sensing area generates bending deformation according to abdomen deformation caused by respiration of the user, light escape is increased, the voltage value output by the photoelectric detector module is changed, the signal acquisition module transmits the voltage change value to the terminal, and the terminal monitors the respiration rate of the user according to the voltage change value; the method comprises the steps of eliminating baseline drift and interference of an original signal received by a terminal by adopting a wavelet decomposition method; performing Fourier transform on the signals after wavelet decomposition to obtain a spectrogram;
the side polishing length of the sensing area is 1cm-6cm, and the side polishing depth is 0.2mm-0.8mm.
2. The wearable respiration monitoring device based on D-type plastic optical fiber according to claim 1, wherein the outer diameter of the plastic optical fiber is 1.3mm and the fiber core diameter is 1mm.
3. The wearable respiration monitoring device based on D-type plastic optical fiber according to claim 1, wherein the light source is a light emitting diode.
4. The wearable respiration monitoring device based on D-type plastic optical fiber according to claim 1, wherein the fixing block is solidified AB glue and is used for fixing the sensing area.
5. The wearable respiration monitoring device based on the D-type plastic optical fiber according to claim 1, wherein the fixing part is a magic tape fixedly connected to two end parts of the fixing belt.
6. The wearable respiration monitoring device based on D-type plastic optical fiber according to claim 1, wherein the fixing belt is a stretchable elastic belt.
7. The wearable respiration monitoring device based on the D-type plastic optical fiber according to claim 1, wherein the terminal is a computer and is used for displaying, storing and processing the received voltage change value in real time.
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| CN202011131153.1A CN112190255B (en) | 2020-10-21 | 2020-10-21 | Wearable respiration monitoring equipment based on D-type plastic optical fiber |
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| CN202011131153.1A CN112190255B (en) | 2020-10-21 | 2020-10-21 | Wearable respiration monitoring equipment based on D-type plastic optical fiber |
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| CN112190255B true CN112190255B (en) | 2023-09-22 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114259223A (en) * | 2021-12-17 | 2022-04-01 | 南昌航空大学 | Human motion state monitoring system based on D-type plastic optical fiber |
| CN114858194A (en) * | 2022-04-15 | 2022-08-05 | 黑龙江大学 | Twist-shaped plastic optical fiber respiration sensor and preparation method thereof |
| CN114858193A (en) * | 2022-04-15 | 2022-08-05 | 深圳市富斯光电科技有限公司 | Spiral plastic optical fiber respiration sensor and preparation method thereof |
| CN114719956A (en) * | 2022-04-27 | 2022-07-08 | 南昌航空大学 | Feather patting ball state monitoring system and method based on flexible plastic optical fiber |
| WO2024123806A1 (en) * | 2022-12-05 | 2024-06-13 | Organic Robotics Corporation | Garment sensor systems |
| CN116058828A (en) * | 2022-12-19 | 2023-05-05 | 北京师范大学珠海校区 | Sport health monitoring device |
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| CN102573615A (en) * | 2009-08-06 | 2012-07-11 | 新加坡科技研究局 | A vital signs detecting device and a method for detecting vital signs |
| WO2015112095A1 (en) * | 2014-01-23 | 2015-07-30 | Agency For Science, Technology And Research | Smart belt for breathing and heart rate monitoring |
| CN106618577A (en) * | 2016-09-22 | 2017-05-10 | 西北工业大学 | Optical fiber breath sensor based on molybdenum disulfide nanometer coating |
| CN110786857A (en) * | 2019-10-15 | 2020-02-14 | 天津大学 | Wearable optical fiber breathing tidal volume detection device |
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| KR100370367B1 (en) * | 2000-08-04 | 2003-01-29 | 한국과학기술원 | Adhesive method of optical fiber curvature sensor for measuring body motion |
| US10667742B2 (en) * | 2017-02-01 | 2020-06-02 | Elwha Llc | Systems, devices and methods for monitoring breastfeeding |
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| CN102573615A (en) * | 2009-08-06 | 2012-07-11 | 新加坡科技研究局 | A vital signs detecting device and a method for detecting vital signs |
| WO2015112095A1 (en) * | 2014-01-23 | 2015-07-30 | Agency For Science, Technology And Research | Smart belt for breathing and heart rate monitoring |
| CN106618577A (en) * | 2016-09-22 | 2017-05-10 | 西北工业大学 | Optical fiber breath sensor based on molybdenum disulfide nanometer coating |
| CN110786857A (en) * | 2019-10-15 | 2020-02-14 | 天津大学 | Wearable optical fiber breathing tidal volume detection device |
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