CN104545922A - Respiration monitoring system and using method thereof - Google Patents
Respiration monitoring system and using method thereof Download PDFInfo
- Publication number
- CN104545922A CN104545922A CN201310500847.1A CN201310500847A CN104545922A CN 104545922 A CN104545922 A CN 104545922A CN 201310500847 A CN201310500847 A CN 201310500847A CN 104545922 A CN104545922 A CN 104545922A
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- Prior art keywords
- respiratory
- pressure
- monitoring system
- flow
- transducer
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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
- A61B5/087—Measuring breath flow
-
- 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
- A61B5/082—Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath
-
- 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
- A61B5/087—Measuring breath flow
- A61B5/0871—Peak expiratory flowmeters
Abstract
The invention provides a respiration monitoring system and a using method thereof. The respiration monitoring system comprises a flow sensor, an air course connecting pipeline, pressure sensors, a pressure difference amplifier, an analog-digital conversion circuit and a single-chip microcomputer. The respiration monitoring system has the advantages of advancement and operability, capability of effectively instructing use of a respirator and guaranteeing safety of patients, higher performance and low cost.
Description
Technical field
The present invention relates to human body monitoring field, specifically a kind of respiratory monitoring system and the using method thereof in armarium.
Background technology
In the modern society of scientific and technical high development, the mankind have entered the fast changing information age, and people are being engaged in the activity such as commercial production and scientific experiments, mainly rely on the exploitation to information resources, acquisition, transmission and process.Sensor is in the interface position of object of study and TT&C system, be perception, obtain and the window of Detection Information, all scientific experimentss and production process, particularly in the raw information automatically detected and obtain in automatic control system, the signal of telecommunication of easily transmission and process all to be converted to by sensor.Simultaneously due to the develop rapidly of science and technology, particularly microelectronic processing technique, the development of computer technology and the information processing technology, the needs of people to dwelling resource are growing, as the attention providing the sensor technology of information and sensor more and more to cause people, and the sensor technology of various advanced technology also enters the stage of a develop rapidly.
[1]
Simultaneously because industrialized impact makes air pollution more and more serious, the disease of lung aspect also has the trend of increase, respiratory disorder is one of principal disease threatening human health, early diagnosis and therapy is the effective way of prevention respiratory disorder, and respiratory monitor plays vital effect wherein.But in the past due to the shortage of monitoring of respiration measure and immature, the physiological parameter such as gas volume of breathing of the flow of respiration channel, pressure and people (mainly patient) can not be reflected exactly, abundant reference data can not be provided for clinical, thus easily bring the ill effects such as atmospheric pressure, volume wound, disturbance of circulation and pulmonary atelectasis to patient.Buying provides the monitor of respiration parameter monitoring function then expensive abroad.So the effect of respiratory monitor also becomes increasingly conspicuous, studying new respiratory monitor is a new problem.In view of the situation, sensor technology and respiratory monitor being combined also is a kind of trend.And this just technology that the present invention studies.
Summary of the invention
For the defect of prior art, develop a kind of respiratory monitoring system system, can only to measure a respiration parameter different from traditional respiratory monitor, native system can measure multiple respiration parameter simultaneously, apply singlechip technology in the sensor, the programmability of single-chip microcomputer makes its adaptability, motility strengthens greatly simultaneously.It is easy to use, only the air flue of people (mainly patient) need be aimed at flow transducer, and flow transducer by the signal experienced through a series of process, show finally by display screen.
The present invention is for realizing goal of the invention, and the technical scheme of employing is:
First aspect, native system comprises flow transducer, gas circuit connecting pipe road, pressure transducer, differential amplifier, analog to digital conversion circuit and single-chip microcomputer.
Further, described flow transducer adopts differential pressure flow sensor, and this differential pressure flow sensor is made up of throttling arrangement and differential pressure gauge or differential pressure transmitter.
Further, described pressure transducer selects piezoresistive pressure sensor.
Further, described single-chip microcomputer adopt TI company in MSP430 series monolithic, this single-chip microcomputer comprises CPU, program storage (RAM), runs the main functional modules such as control, peripheral module, agitator and doubler.
The opposing party aspect, the using method of respiratory monitoring system of the present invention, comprises the following steps:
1), when using, flow transducer is connected on the respiratory tract two ends of respirator and patient;
2) when respiratory air flow is by flow transducer, the flow in respiratory airway is obtained;
3) pressure transducer two is for measuring the pressure in patient respiration air flue;
4) signal exported obtains digitized gas circuit status information after amplification filtering and analog digital conversion, identify relevant parameters and curve further by corresponding algorithm and wave character again, these parameters and curve form being the objective indicator evaluating gas circuit state.
5) the instant monitoring to ten multinomial breathing mechanics parameters such as respiratory frequency, surge pressure, compliance, tidal volume and ventilations per minute;
6) according to monitoring information, effectively instruct the use of respirator, guarantee patient safety.
Flow transducer in use, is connected on the respiratory tract two ends of respirator and patient by respiratory monitor.When respiratory air flow is by flow transducer, the metering hole of its inside can sense a pressure differential.This pressure differential passes to pressure transducer one measurement through gas circuit connecting pipe, finally for calculating the flow in respiratory airway.Pressure transducer two is for measuring the pressure in patient respiration air flue.The two-way pressure signal exported obtains digitized gas circuit status information after amplification filtering and analog digital conversion, then identifies relevant parameters and curve further by corresponding algorithm and wave character.These parameters and curve form being the objective indicator evaluating gas circuit state.
From the above technical solution of the present invention shows that, the present invention is compared with traditional respiratory monitoring system, and it has following advantage and useful effect:
1, the present invention and maximum not being both of general respiratory monitor can measure multiple breathing parameter simultaneously, can provide rich in natural resources more for the breathing function of analyst.
2, the present invention effectively can instruct the use of respirator, guarantees patient safety.
3, the present invention improves a lot in performance and economic aspect than with the Respiratory Care system of living, and with low cost.
Accompanying drawing explanation
Fig. 1 is respiratory monitoring system embodiment system schematic of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further; As Fig. 1 shows, respiratory monitoring system of the present invention is primarily of compositions such as flow transducer, gas circuit connecting pipe road, pressure transducer, differential amplifier, analog to digital conversion circuit and Single Chip Microcomputer (SCM) system.Flow transducer in use, is connected on the respiratory tract two ends of respirator and patient by respiratory monitor.When respiratory air flow is by flow transducer, the metering hole of its inside can sense a pressure differential.This pressure differential passes to pressure transducer one measurement through gas circuit connecting pipe, finally for calculating the flow in respiratory airway.Pressure transducer two is for measuring the pressure in patient respiration air flue.The two-way pressure signal exported obtains digitized gas circuit status information after amplification filtering and analog digital conversion, then identifies relevant parameters and curve further by corresponding algorithm and wave character.These parameters and curve form being the objective indicator evaluating gas circuit state.
The physical signs of monitoring system monitoring of the present invention comprises:
1. tidal volume: the amount of oxygen of each air-breathing inspiration, scope is 100 ~ 1000ml/ time;
2. ventilation per minute: the amount of oxygen of suction per minute, scope is 4 ~ 20L/min;
Under normal circumstances, tidal volume (VT) is with ventilation per minute (VE) because sex, age are different and variant with body surface area, and male VT is about 7.8ml/kg, women is 6.6ml/kg, VE are 5 ~ 7L/min.When respiration inhibition (as anesthesia, analgesic, muscle relaxant etc.) and respiratory failure, VT reduces, and when operation stimulates and PaCO2 raises, VT increases.As tidal volume reduces, the corresponding increase of frequency (VE=VT × f), if more than 25 ~ 30bpm, then prompting breathing mechanical movement can not meet body requirement, and can cause respiratory muscle fatigue.During mechanical ventilation, adult VT needs 8 ~ 10ml/kg, and children's is 10 ~ 12ml/kg, can regulate, when VT is excessive, airway pressure is raised, affects circulatory function according to PaCO2 or end-tidal partial pressure of carbon dioxide (PETCO2).VE>10L/min, can not withdrawing breathing machine.
3. respiratory frequency: the number of times of air-breathing per minute or expiration, generally at 15 ~ 30/ times/min, allowable error: ± 15%;
4. respiratory quotient: the ratio of inspiratory duration and expiratory duration, is generally 1:2;
5. inspiratory duration: the time of each air-breathing gas, unit is s;
Monitoring system of the present invention, by the setting to above monitored physical signs, when physical signs exceeds standard and dangerous situation occurs, can be carried out the use reporting to the police or control respirator, ensure by the safety of monitor patients.
The selection of embodiments of the invention capital equipment comprises:
One, the type selecting of sensor
1. differential pressure flow sensor is also known as throttle-type flow sensor, and it is the throttling arrangement utilized in pipeline, and the principle instantaneous delivery of fluid in pipeline being converted to the pressure differential before and after throttling arrangement realizes.Differential pressure flow sensor Flow Measuring System is primarily of throttling arrangement and differential pressure gauge (or differential pressure send device) composition.
2. in the design, pressure transducer selects piezoresistive pressure sensor.The pressure-sensing device of piezoresistive pressure sensor is pressure drag component, and it is based on piezoresistive effect work.So-called pressure drag component in fact just refers to the diffusion resistance that integrated circuit technology is made on the substrate of semi-conducting material, and when it is by External Force Acting, its resistance changes due to the change of resistivity.Need depend on flexible member when diffusion resistance normally works, conventional is monocrystal silicon diaphragm.It is any a that two differential pressure pickups in the design are selected in NPC-103 ceramic package silicon pressure sensor and NPC-12010 series respectively.
Two, the type selecting of microprocessor (single-chip microcomputer)
TI company is a kind of 16 Flash single-chip microcomputers of super low-power consumption in the MSP430 series monolithic that 2000 release, and they are made up of different modules for different application.Successfully solve a powerful difficult problem low in energy consumption again, compare and be suitable for the application of portable control system.These microcontrollers are designed to usable-battery work, and can have the application of very long service time.MSP430 series monolithic device comprises CPU, program storage (RAM), runs the main functional modules such as control, peripheral module, agitator and doubler.They have 16 risc architectures, and 16 storage devices in CPU and constant generator make MSP430 microcontroller reach the highest code rate; Clock source can make the code efficiency that device reaches the highest flexibly, and numerically controlled agitator can make device wake up rapidly from low-power consumption module, within the time being less than 6us, be activated to active working method.
In sum, the invention of the present embodiment has many-sided advantage, and its perfect function is given full play to:
1. advanced and reliability;
2. economic and practical; Make full use of software to realize systemic-function, reduce hardware costs as far as possible;
3. the convenience of operation and maintenance; The value of human cost is increasing considerably, and system accomplishes that operation and maintenance is more convenient, increases work efficiency, and reduces human cost;
Above description word and accompanying drawing are only explanation of the invention and explanation, in any form the present invention be not construed as limiting and limit, scope of the present invention is as the criterion with claims, and all do not exceed the apparent amendment of present inventive concept, conversion and replacement scheme all within the scope of the present invention.
Claims (5)
1. a respiratory monitoring system, is characterized in that, comprises flow transducer, gas circuit connecting pipe road, pressure transducer, differential amplifier, analog to digital conversion circuit and single-chip microcomputer.
2. respiratory monitoring system according to claim 1, is characterized in that, described flow transducer adopts differential pressure flow sensor, and this differential pressure flow sensor is made up of throttling arrangement and differential pressure gauge or differential pressure transmitter.
3. respiratory monitoring system according to claim 1, is characterized in that, described pressure transducer selects piezoresistive pressure sensor.
4. respiratory monitoring system according to claim 1, it is characterized in that, described single-chip microcomputer adopt TI company in MSP430 series monolithic, this single-chip microcomputer comprises CPU, program storage (RAM), runs the main functional modules such as control, peripheral module, agitator and doubler.
5. the using method of respiratory monitoring system according to claim 1, is characterized in that, comprises the following steps:
1), when using, flow transducer is connected on the respiratory tract two ends of respirator and patient;
2) when respiratory air flow is by flow transducer, the flow in respiratory airway is obtained;
3) pressure transducer two is for measuring the pressure in patient respiration air flue;
4) signal exported obtains digitized gas circuit status information after amplification filtering and analog digital conversion, identify relevant parameters and curve further by corresponding algorithm and wave character again, these parameters and curve form being the objective indicator evaluating gas circuit state.
5) the instant monitoring to ten multinomial breathing mechanics parameters such as respiratory frequency, surge pressure, compliance, tidal volume and ventilations per minute;
6) according to monitoring information, instruct the use of respirator, guarantee patient safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500847.1A CN104545922A (en) | 2013-10-22 | 2013-10-22 | Respiration monitoring system and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310500847.1A CN104545922A (en) | 2013-10-22 | 2013-10-22 | Respiration monitoring system and using method thereof |
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| CN104545922A true CN104545922A (en) | 2015-04-29 |
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| CN201310500847.1A Pending CN104545922A (en) | 2013-10-22 | 2013-10-22 | Respiration monitoring system and using method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840201A (en) * | 2015-05-14 | 2015-08-19 | 天津大学 | Main flow type breathing flow real-time monitoring device and method |
| CN105083501A (en) * | 2015-09-09 | 2015-11-25 | 中国人民解放军海军医学研究所 | Diving breathing apparatus |
| CN105197205A (en) * | 2015-09-09 | 2015-12-30 | 中国人民解放军海军医学研究所 | Diving equipment, ground monitoring platform and diving breathing monitoring system |
| CN109820491A (en) * | 2019-01-28 | 2019-05-31 | 中山大学孙逸仙纪念医院 | Prevent asphyxia neonatorum induction chip |
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| US20050005942A1 (en) * | 2003-07-09 | 2005-01-13 | Airmatrix Technologies, Inc. | Method and system for measuring airflow of nares |
| CN101002972A (en) * | 2006-01-20 | 2007-07-25 | 深圳迈瑞生物医疗电子股份有限公司 | Method for judging inversed connection of flow-rate sensor, and module of its breathing mechanics measurement |
| CN201181540Y (en) * | 2007-12-01 | 2009-01-14 | 陈新权 | Simulation lung apparatus |
| CN102151385A (en) * | 2011-05-27 | 2011-08-17 | 徐赤坤 | Breath trainer |
| CN102178529A (en) * | 2011-03-11 | 2011-09-14 | 清华大学 | Body area network-based respiratory disease remote diagnosis monitoring system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050005942A1 (en) * | 2003-07-09 | 2005-01-13 | Airmatrix Technologies, Inc. | Method and system for measuring airflow of nares |
| CN101002972A (en) * | 2006-01-20 | 2007-07-25 | 深圳迈瑞生物医疗电子股份有限公司 | Method for judging inversed connection of flow-rate sensor, and module of its breathing mechanics measurement |
| CN201181540Y (en) * | 2007-12-01 | 2009-01-14 | 陈新权 | Simulation lung apparatus |
| CN102178529A (en) * | 2011-03-11 | 2011-09-14 | 清华大学 | Body area network-based respiratory disease remote diagnosis monitoring system |
| CN102151385A (en) * | 2011-05-27 | 2011-08-17 | 徐赤坤 | Breath trainer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840201A (en) * | 2015-05-14 | 2015-08-19 | 天津大学 | Main flow type breathing flow real-time monitoring device and method |
| CN105083501A (en) * | 2015-09-09 | 2015-11-25 | 中国人民解放军海军医学研究所 | Diving breathing apparatus |
| CN105197205A (en) * | 2015-09-09 | 2015-12-30 | 中国人民解放军海军医学研究所 | Diving equipment, ground monitoring platform and diving breathing monitoring system |
| CN105083501B (en) * | 2015-09-09 | 2018-01-30 | 中国人民解放军海军医学研究所 | Aqualung |
| CN109820491A (en) * | 2019-01-28 | 2019-05-31 | 中山大学孙逸仙纪念医院 | Prevent asphyxia neonatorum induction chip |
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