CN104274177A - Respiration detection device based on grating and photodiode array - Google Patents
Respiration detection device based on grating and photodiode array Download PDFInfo
- Publication number
- CN104274177A CN104274177A CN201410580662.0A CN201410580662A CN104274177A CN 104274177 A CN104274177 A CN 104274177A CN 201410580662 A CN201410580662 A CN 201410580662A CN 104274177 A CN104274177 A CN 104274177A
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- CN
- China
- Prior art keywords
- grating
- photodiode array
- bellyband
- photodiode
- chip microcomputer
- 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.)
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Classifications
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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
- A61B5/08—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
- A61B5/48—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
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6823—Trunk, e.g., chest, back, abdomen, hip
-
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physiology (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a respiration detection device based on a grating and a photodiode array. The respiration detection device comprises a bellyband with a grating, a photodiode array, a signal processing module, a comparator, light-emitting diodes and a single-chip microcomputer, wherein four photodiodes are integrated on the photodiode array; the grating is composed of light and dark stripes which are arranged alternately; the period of the grating is just a little smaller than the total distance L of the photodiode array; the grating is arranged between light-emitting diodes and the photodiode array; the light-emitting diodes and the photodiode array are fixed on a housing; one end of the bellyband is fixed on one end of the housing through a spring; and the bellyband penetrates through a hole in the other end of the housing and can move relative to the housing. The respiration detection device is worn on the belly by virtue of the bellyband; when a person breathes, the position of the grating in the bellyband can change relative to the position of the photodiodes due to the volume change of the belly, the change of the grating position can be detected through a photodiode sensor array, and the single-chip microcomputer judges the process and time of exhaling and inhaling, thus analyzing the respiration period and frequency.
Description
Technical field
The present invention relates to the technical field measured and breathe, specifically a kind of breathing cycle checkout gear based on respiratory inductive plethysmography.
Background technology
Sleep Apnea-hypopnea Syndrome is the proemial disease of a kind of tool, may bring out the disease such as myocardial infarction, cerebrovas-cularaccident, when serious, even Sudden Death During Sleep occurs, threat to life.By breathing the real-time monitoring of situation to patient sleeps, length and the frequency of sleep apnea syndrome can be found, not only can help patient's diagnosis and treatment, and can early prevent the generation of various complication in pole, improve the survival rate of patient.But existing equipment price is commercially expensive, bulky, can only use in specialist hospital, is unfavorable for universal and promotes.
Summary of the invention
Object of the present invention is achieved through the following technical solutions: a kind of device utilizing grating and photodiode array to measure respiratory frequency, wraps the grating, photodiode array, signal processing module, comparator, light emitting diode and the single-chip microcomputer that are connected on bellyband.Grating is fixed on bellyband by elastomeric material, and between the light emitting diode be fixedly connected on bellyband and photodiode array.In respiratory, the change due to abdominal part volume causes grating in bellyband to change relative to the position of photodiode.The change of the motion of photodiode array detection grating is also converted to the signal of telecommunication, signal processing circuit carries out processing and amplifying to the described signal of telecommunication, comparator to adjacent two photodiode collections and amplify the signal of telecommunication compare, single-chip microcomputer gather described relatively after result differentiate expiration and the process of air-breathing, thus calculate breathing rate and the cycle of patient.
The useful improvement that the present invention realizes has following two aspects.
(1) the design passes device based on the respiration detection of photodiode array, and structure is simple, and the signal of output is digital signal, without the need to carrying out the process such as complicated amplification filtering to analogue signal, effectively prevent the interference of other signals.
(2) simplify in date processing, hardware cost is low right, can detect respiratory frequency and the cycle of patient continuously, in real time.
Accompanying drawing explanation
Accompanying drawing 1 is structure chart of the present invention.
Accompanying drawing 2 is systematic schematic diagram of the present invention.
Accompanying drawing 3 is passage X and passage Y oscillogram.
Accompanying drawing 4 is process chart of the present invention.
Detailed description of the invention
Be described in further detail feature of the present invention and other correlated characteristic by example below in conjunction with accompanying drawing, as shown in Figure 1, bellyband 1 is fixed on shell 6 by spring 5.Grating 3 is connected on bellyband 1, and between light emitting diode 2 and photodiode array 4.Light emitting diode 2 and photodiode array 4 are fixed on shell 6.In respiratory, the change due to abdominal part volume can cause grating in bellyband to change relative to the position of photodiode.
As shown in Figure 2, system mainly comprises: be made up of the bellyband 1 of grating belt 3, light emitting diode 2, photodiode array 4, signal processing module 7, comparator 8 and single-chip microcomputer 9.Described photodiode array 4 is connected to signal processing module 7, and signal processing module 7 is connected to comparator 8, and comparator 8 is connected to single-chip microcomputer 9.In respiratory, the change due to abdominal part volume causes grating in bellyband to change relative to the position of photodiode.The change of the motion of photodiode array detection grating is also converted to the signal of telecommunication, and signal processing circuit processes signal, and single-chip microcomputer acquired signal differentiates the process of expiration and air-breathing, calculates breathing rate and the cycle of patient.Signal processing module circuit converts voltage to the optical signal that photodiode detects, light intensity then voltage is high, and the weak then voltage of light is low.The output terminals A of signal processing module shown in Fig. 2, B, C, D are the light intensity that in photodiode array, four photodiodes detect respectively.Grating is light and dark, and when bright fringe is before photodiode, then output voltage is high; When dark fringe then output LOW voltage before photodiode.
The cycle of grating is more a little bit smaller than total distance L of four photodiodes just.Fig. 3 is the signal measuring passage X and the passage Y obtained, and as can see from Figure 3, passage X is the same with the signal waveform of passage Y, and just the direction of grating motion is different, determines the sequencing of the edge change of passage X and passage Y.If the grating in Fig. 2 moves upward, then the rising edge of passage X is more Zao than the rising edge of passage Y, and the trailing edge of passage X is also Zao than the trailing edge of passage Y.If the grating in Fig. 2 moves downward, then the rising edge of passage X is more Zao than the rising edge of passage Y, and the trailing edge of passage X is more Zao than the trailing edge of passage Y.
Fig. 4 is the software flow pattern of the measurement respiratory frequency of one-chip computer module internal operation.Native system carries out data acquisition by single-chip microcomputer, judges the direction of motion of grating in the process of breathing, and by the judgement of single-chip microcomputer to the grating direction of motion, thus judges the motor process of breathing, thus calculates cycle and the frequency of breathing.
Embodiments of the present invention are not limited thereto, according to foregoing of the present invention, according to ordinary technical knowledge and the customary means of this area, do not departing under the present invention's above-mentioned basic fundamental thought prerequisite, the present invention can also make the equivalent modifications of other various ways, replacement or change, all can realize the object of the invention.
Claims (4)
1. one kind utilizes the device for detecting respiratory of grating and photodiode array, it is characterized in that: be made up of the bellyband of grating belt, light emitting diode, photodiode array, signal processing module, comparator and single-chip microcomputer, described photodiode array is connected to described signal processing module, described signal processing module is connected to described comparator, and described comparator is connected to described single-chip microcomputer.
2. a kind of device for detecting respiratory utilizing grating and photodiode array according to claim 1, it is characterized in that: grating is fixed on bellyband by elastomeric material, and between the light emitting diode be fixedly connected on bellyband and photodiode array, in respiratory, the change of abdominal part volume can cause grating relative to the movement of photodiode array.
3. a kind of device for detecting respiratory utilizing grating and photodiode array according to claim 1, is characterized in that:
Photodiode array is made up of four equally spaced photodiodes, and grating forms by waiting light and shade striped of width, and the cycle of grating is just shorter than the total length of photodiode array.
4. a kind of device for detecting respiratory utilizing grating and photodiode array according to claim 1, it is characterized in that: the change of the motion of photodiode array detection grating is also converted to the signal of telecommunication, signal processing circuit carries out processing and amplifying to the described signal of telecommunication, comparator to adjacent two photodiode collections and amplify after the signal of telecommunication compare, single-chip microcomputer gather described relatively after result differentiate expiration and the process of air-breathing, thus calculate breathing rate and the cycle of patient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580662.0A CN104274177A (en) | 2014-10-27 | 2014-10-27 | Respiration detection device based on grating and photodiode array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580662.0A CN104274177A (en) | 2014-10-27 | 2014-10-27 | Respiration detection device based on grating and photodiode array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104274177A true CN104274177A (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410580662.0A Pending CN104274177A (en) | 2014-10-27 | 2014-10-27 | Respiration detection device based on grating and photodiode array |
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| CN (1) | CN104274177A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105520734A (en) * | 2014-10-25 | 2016-04-27 | 广东工业大学 | Respiration testing device |
| CN106361342A (en) * | 2016-11-25 | 2017-02-01 | 钟春兰 | Nursing respiration detection device |
| CN107638239A (en) * | 2017-07-21 | 2018-01-30 | 重庆大学 | A kind of intelligent multi-function hypertension breathes hypertension instrument |
| CN110464318A (en) * | 2019-08-21 | 2019-11-19 | 清华大学 | Physiological Signal Acquiring System based on PPG |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142953A (en) * | 1999-07-08 | 2000-11-07 | Compumedics Sleep Pty Ltd | Respiratory inductive plethysmography band transducer |
| CN201806704U (en) * | 2010-10-21 | 2011-04-27 | 浙江理工大学 | Asthma monitoring protective instrument |
| CN201939849U (en) * | 2010-07-20 | 2011-08-24 | 浙江玉升医疗器械股份有限公司 | Pressure control valve for breather |
| CN103040469A (en) * | 2013-01-15 | 2013-04-17 | 重庆大学 | Respiration detection bellyband |
| CN104015940A (en) * | 2014-03-31 | 2014-09-03 | 天津大学 | Novel intelligent clothes with warning function |
-
2014
- 2014-10-27 CN CN201410580662.0A patent/CN104274177A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142953A (en) * | 1999-07-08 | 2000-11-07 | Compumedics Sleep Pty Ltd | Respiratory inductive plethysmography band transducer |
| CN201939849U (en) * | 2010-07-20 | 2011-08-24 | 浙江玉升医疗器械股份有限公司 | Pressure control valve for breather |
| CN201806704U (en) * | 2010-10-21 | 2011-04-27 | 浙江理工大学 | Asthma monitoring protective instrument |
| CN103040469A (en) * | 2013-01-15 | 2013-04-17 | 重庆大学 | Respiration detection bellyband |
| CN104015940A (en) * | 2014-03-31 | 2014-09-03 | 天津大学 | Novel intelligent clothes with warning function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105520734A (en) * | 2014-10-25 | 2016-04-27 | 广东工业大学 | Respiration testing device |
| CN106361342A (en) * | 2016-11-25 | 2017-02-01 | 钟春兰 | Nursing respiration detection device |
| CN106361342B (en) * | 2016-11-25 | 2019-05-31 | 钟春兰 | Device for detecting respiratory is used in a kind of nursing |
| CN107638239A (en) * | 2017-07-21 | 2018-01-30 | 重庆大学 | A kind of intelligent multi-function hypertension breathes hypertension instrument |
| CN110464318A (en) * | 2019-08-21 | 2019-11-19 | 清华大学 | Physiological Signal Acquiring System based on PPG |
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