CN109692000A - Portable V O2 detection device - Google Patents
Portable V O2 detection device Download PDFInfo
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- CN109692000A CN109692000A CN201811505422.9A CN201811505422A CN109692000A CN 109692000 A CN109692000 A CN 109692000A CN 201811505422 A CN201811505422 A CN 201811505422A CN 109692000 A CN109692000 A CN 109692000A
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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—Measuring devices for evaluating the respiratory organs
- A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
- A61B5/0833—Measuring rate of oxygen consumption
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Measuring devices for evaluating the respiratory organs
- A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
- A61B5/0836—Measuring rate of CO2 production
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Measuring 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—Measuring devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
- A61B5/0873—Measuring breath flow using optical means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Measuring devices for evaluating the respiratory organs
- A61B5/097—Devices for facilitating collection of breath or for directing breath into or through measuring devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
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- Physiology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Obesity (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The embodiment of the invention discloses portable V O2 detection devices, comprising: user interface, type double flow meter, miniature mixing chamber, oxygen sensor, oxygenation device, heart rate acquisition device, temperature and baroceptor, microprocessor, communication module, display screen；Wherein, the oxygen sensor, the oxygenation device, the heart rate acquisition device, the temperature and baroceptor, the communication module, the display screen are connected to the microprocessor.Portable V O2 detection device proposed by the present invention can measure oxygen wholly or partially respectively in the case where no capnograph and consume and accurately export measurement result, and it is a kind of portable device, is very suitable to the application scenarios of training and guidance, scientific research and physical education.
Description
Technical field
The present invention relates to gaseous metabolism field of measuring technique, in particular to portable V O2 detection device.
Background technique
In recent decades, China's cardiovascular disease (Cardiovascular Disease, abbreviation CVD) and pulmonary disease hair
Sick rate, which is in, continues ascent stage, and the disease incidence in elderly population is higher, this mainly changes with social development, people's living habit
Become, aging of population, the factors such as environmental degradation are related, and the reciprocation between these risk factors makes disease incidence be multiplied.
The prevention and treatment burden of cardiovascular disease and pulmonary disease is got worse, and have become that China's today's society faced important public defends
Raw problem, it is very urgent to reinforce prevention and treatment.
Cardiovascular disease and pulmonary disease pathogenic process is slow, incubation period is long, it is therefore desirable to which suitable tool falls ill to it
Risk is assessed, then is reasonably intervened, to achieve the purpose that prevention event occurs.It is more and more to prove to show the heart
Index is cardiovascular disease and pulmonary disease and other are chronic for lung function (Cardiorespiratory Fitness, abbreviation CRF)
Factor is effectively predicted in disease, and CRF can be also used for reclassifying the adverse consequences of all chronic diseases, therefore,
American Heart Association's cardio-pulmonary function (CRF) index that made a statement can be used as the important clinical mark of patient health management,
To reduce cardiovascular risk.
System using gaseous metabolism measurement method measurement cardio-pulmonary function (CRF) index is a kind of metabolic evaluation system.The heart
Lung exercise test (Cardiopulmonary Exercise Testing, abbreviation CPX), oxygen consumption (VO2) measurement, Yi Jihu
It inhales motion measurement to be widely used in the fields such as clinical health assessment, Health Training, exercise prescription, is mainly used in survey
It measures in oxygen consumption (VO2), carbon dioxide output (VCO2) and respiratory capacity (VE).
Oxygen consumption reaction is measured in cardio-pulmonary function (CRF) measurement process, wherein maximal oxygen uptake (VO2max) is to survey
Measure the major criterion of cardiovascular system transport oxygen ability.The value of maximal oxygen uptake (VO2max) depends on motion mode, training
The integrality of degree and cardiovascular function.In various types of heart and lung diseases, the value of the maximal oxygen uptake (VO2max) of patient
It would generally reduce.In most cases, in addition to sportsman, normal or higher maximal oxygen uptake (VO2max) numerical value almost may be used
Ensure no any major cardiovascular disease or pulmonary disease.Maximal oxygen uptake (VO2max) numerical value can use ml/kg/min
It indicates, the numerical value is related with the exercise tolerance of individual.Specific anaerobic threshold (AT) can be used to design personalized fitness program, from
And improves physical condition and maximumlly consume calorie.The measurement of maximal oxygen uptake (VO2max) can assess the true strong of individual
Kang Shuiping.And simultaneously, cardio-pulmonary function (CRF) index can also be used to identify whether gerontal patient has height dead in major surgery
Die the risk of rate.Studies have shown that the relevant death rate of postoperative cardiovascular can be carried out in advance by anaerobic threshold (AT) < 11ml/kg/min
It surveys, and anaerobic threshold (AT) can be obtained by measurement oxygen consumption (VO2).
Human body gaseous metabolism test is the principle based on indirect calorimetry, according to zmount of oxygen consumption, titanium dioxide in certain time
Carbon yield calculates the composition of the energy consumption and carbohydrate, fat and protein of human body in energy consumption.Its
Device can cooperate with the load equipments such as treadmill, Power Vehicle, test oxygen uptake of the human body under different motion load, carbon dioxide
Discharge rate.Gaseous metabolism test is that the assessment of cardio-pulmonary function, the diagnoses and treatment of disease and scientific nutrition supply provide ginseng
It examines.
The human body gaseous metabolism test and comparison of early stage is simple, generally uses douglas bag method.By institute in test process
There is exhaled gas to be all collected into airbag, entire test process needs tens airbags.After the completion of test, expiratory air is first measured
The volume of body, reuses the concentration of oxygen and carbon dioxide in chemical analysis method analysis airbag, and whole process is slow and numerous
It is trivial.Since douglas bag method cannot accomplish the real-time analysis of data, while equipment is huge, vent line be it is enclosed,
Expiratory resistance is very big.Miniature mixing chamber method acquires micro characteristics of contaminated respiratory droplets gas and is analyzed, miniature mixing chamber and Douglas
Airbag method is compared, its biggest advantage is that can measure under open breathing pattern, has casted off subject once and for all stupid
The corrugated hose and check valve of weight, subject can lightheartedly breathe, and miniature mixing chamber method is surveyed as current gaseous metabolism
Try one of main method.
In the prior art, cardio-pulmonary function (CRF) measuring system has several basic modules, including oxygen and carbon dioxide point
Analyzer, ventilation survey equipment, interface electronics, gas sampling system, data collection system and computer, in the computer
The upper corresponding computer program of operation.
However, inventor it has been investigated that, in the prior art, analysis carbon dioxide (CO2) export (VCO2) Shi Suoxu
Carbon dioxide (CO2) analyzer cost it is very high, and have the shortcomings that high power consumption；And oxygen (O2) is analyzed in contrast
Instrument is usually relatively cheap；Meanwhile cardio-pulmonary function (CRF) measuring system in the prior art can only measure whole oxygen consumption
(VO2), individual oxygen consumption (VO2) cannot be measured.
Summary of the invention
Based on this, for solve in the prior art the technical issues of, spy proposes portable V O2 detection device, comprising:
User interface, type double flow meter, miniature mixing chamber, oxygen sensor, oxygenation device, heart rate acquisition device, temperature
And baroceptor, microprocessor, communication module, display screen；
Wherein, the oxygen sensor, the oxygenation device, the heart rate acquisition device, the temperature and air pressure sensing
Device, the communication module, the display screen are connected to the microprocessor；
Wherein, the user interface is connected to the type double flow meter；
In one embodiment, the user interface is breathing mask；User puts on the breathing mask, and the user is logical
The gas for crossing breathing mask exhalation or sucking is measured by the type double flow meter；The type double flow meter can to
The gas of family exhalation or sucking carries out the metering of flow；
Wherein, the miniature mixing chamber is connected to the type double flow meter；The miniature mixing chamber can be used for measuring most
Big oxygen uptake；
Wherein, the oxygen sensor is connected to the miniature mixing chamber, and the oxygen sensor is for measuring whole take the photograph
Oxygen amount；
It wherein, include near infrared light spectrum sensor in the oxygenation device；The near infrared light spectrum sensor is for measuring
Local oxygen uptake；
Wherein, the heart rate acquisition device is used to acquire the HR values of user during the motion, and will be collected
User's HR values are transmitted to the microprocessor；
In one embodiment, the heart rate acquisition device is immediately below user's chest and in direct contact with the skin including being worn over
Rhythm of the heart band, the rhythm of the heart band is close to user's skin-worn；
Wherein, the temperature and baroceptor be for acquiring atmospheric pressure and temperature, and by collected atmospheric pressure and temperature
Degree value is transmitted to the microprocessor；
Wherein, the microprocessor receives the oxygen sensor, the oxygenation device, the heart rate acquisition device, institute
It states temperature and the collected data of baroceptor and carries out calculating and analysis processing, obtain the oxygen consumption numerical value of user；
In one embodiment, the microprocessor includes memory, USB interface；The USB interface can be used for transmitting
Data, including upload, downloading data；The memory can store for up to 90 minutes user's breath datas.
Wherein, the communication module is connected to the microprocessor, and the communication module transmits data to external equipment；
In one embodiment, the external equipment includes mobile phone, computer, PDA；The communication module and outside
It is communicated between equipment using bluetooth, WIFI.
Wherein, the display screen is connected to the microprocessor, and the display screen can be shown and user's oxygen consumption
(VO2) relevant various information；
In one embodiment, the display screen can be touching display screen, in display oxygen consumption relevant information
While allow user carry out touch input.
In one embodiment, partial pressure of oxygen numerical value is acquired by oxygen sensor obtains and is transmitted to the microprocessor；Have
Oxygen saturation, hemoglobin concentration are obtained and are transmitted to described micro- by the near infrared light spectrum sensor in the oxygenation device
Processor；HR values are acquired by the heart rate acquisition device to be obtained and is transmitted to the microprocessor；
The microprocessor obtains the oxygen consumption value of user according to following formula (1), formula (2), formula (3) operation；
VO2=SV × HR × C (a-v) O2 (1)
SV=C (1-e-0.0132(HR-.45)) (3)
Wherein, VO2 is the oxygen consumption value of user, and SV is stroke output, and HR is HR values, and Hb is that hemoglobin is dense
Degree, PO2 are partial pressure of oxygen numerical value, and C (a-v) O2 is that artery-vein oxygen content is poor, SVO2To there is oxygen saturation, C is adjustable ginseng
Number.
Implement the embodiment of the present invention, will have the following beneficial effects:
The present invention provides improved oxygen to consume measuring device, this kind of oxygen consumption measuring device is in no carbon dioxide
Whole or individual oxygen can be measured in the case where analyzer respectively to consume and accurately export measurement result.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Wherein:
Fig. 1 is the portable V O2 detection device schematic diagram in the present invention；
Fig. 2 is the oxygenation device schematic diagram in the present invention；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides portable V O2 detection device, and the portable V O2 detection device is not using carboloy dioxide analysis
Whole or individual oxygen consumption (VO2) can be measured in the case where instrument and accurately exports corresponding result.
As shown in Figure 1, the portable V O2 detection device in the present invention includes user interface 1, oxygenation device 2, bidirectional traffics
Meter 3, miniature mixing chamber 4, oxygen sensor 5, heart rate acquisition device 6, temperature and baroceptor 7, microprocessor 8, communication mould
Block 9, display screen 10.
Wherein, the user interface 1 is connected to the type double flow meter 3；The user interface 1 is breathing mask；User
Breathing mask is put on, the gas that the user is breathed out or sucked by breathing mask is counted by the type double flow meter 3
Amount；The gas that the type double flow meter 3 can breathe out user or suck carries out the metering of flow.
Wherein, the miniature mixing chamber 4 is connected to the type double flow meter 3；The miniature mixing chamber 4 can be used for measuring
Maximal oxygen uptake (VO2max).It is complicated in past mixing chamber technology and expensive so that its be only applicable to train professional athlete and
Research department；The appearance and application of miniature mixing chamber technology make the feasible body-building for being suitable for possessing any professional standards of this equipment
The room owner and trainer.Miniature mixing chamber method acquires micro characteristics of contaminated respiratory droplets gas and is analyzed, miniature mixing chamber and Doug
Lars airbag method is compared, its biggest advantage is that can measure under open breathing pattern, casts off subject once and for all
Bulky corrugated hose and check valve, subject can lightheartedly breathe, and miniature mixing chamber method becomes current human body gas
Body metabolism test major way.
Wherein, oxygen (O2) sensor 5 is connected to the miniature mixing chamber 4, and oxygen (O2) sensor 5 is used for
Measure the whole oxygen uptake of human body；The oxygen sensor 5 can measure the oxygen concentration in air, and can use temperature benefit
It repays and is used in different environment；The oxygen sensor has wider measurement range.
Wherein, Fig. 2 show the oxygenation device 2 in the portable V O2 detection device；The oxygenation device 2 is based on close
Infrared spectroscopy (near infrared spectroscopy, NIRS) technology；The oxygenation device 2 includes electrode 21, transmitting terminal
LED 22, proximal sensor receiving end 23, distal sensor receiving end 24, temperature sensor 25, USB interface 26, near infrared light
Compose (NIRS) sensor (not shown).It is influenced by 22 temperature of transmitting terminal LED and human body temperature, under static state
Downward trend can be presented near infrared spectrum (NIRS) the sensor voltage obtained of receiving end, need according to temperature sensor 25
The temperature compensation data of acquisition compensate the voltage obtained on the near infrared spectrum (NIRS) sensor.Wherein, the USB connects
Mouth 26 can be used for data transmission.
Wherein, near infrared spectrum (NIRS) sensor can be used for measuring the local oxygen uptake of human body；It is described close red
Exist during external spectrum (NIRS) sensor can be used for monitoring time maximum and largest motion and including cardiovascular disease, septicemia
The variation of aerobic hemoglobin saturation degree and blood flow under interior pathophysiological condition.It is sensed at the near infrared spectrum (NIRS)
During device works, skeletal muscle deoxidation degree changes according to the variation of muscle types, type of sports and blood flow.
Wherein, the heart rate acquisition device 6 is for recording the changes in heart rate of user during the motion；In motion process
Changes in heart rate is one of the important parameter for obtaining maximal oxygen uptake (VO2max)；The heart rate acquisition device 6 includes being worn over chest
Underface and rhythm of the heart band in direct contact with the skin, the rhythm of the heart band needs cosily to be close to skin, even if acutely
Movement will not loosen landing.
Wherein, the temperature and baroceptor 7 are for detecting atmospheric pressure and temperature；Wherein baroceptor element
Sensing principle is based on capacitance technology, can guarantee the superhigh precision (± 5cm) and phase of barometric surveying within the scope of very wide temperature
To precision (± 0.6hPa).Signal processor inside the temperature and baroceptor turns the output signal of sensor element
It is changed to 24 numeric results.Each sensor element includes calibration factor, uses in practical applications by individually calibration
Measurement result is converted to true atmospheric pressure value and true temperature value by the calibration factor；In the temperature and baroceptor 7
Temperature sensor element can be used for the temperature-compensating of oxygen (O2) sensor, the air pressure in the temperature and baroceptor 7
Sensor element can be used for the atmospheric pressure compensating of oxygen (O2) sensor.
Wherein, the microprocessor 8 includes memory, USB interface；The oxygen sensor 5, the oxygenation device 2, institute
State heart rate acquisition device 6, the temperature and baroceptor 7, the communication module 9, the display screen 10 be connected to it is described micro-
Processor 8；Wherein, the oxygen sensor 5, the oxygenation device 2, the heart rate acquisition device 6, the temperature and air pressure transmission
Sensor 7 by collected data be transmitted to the microprocessor 8 calculated, analysis handle；The USB interface can be used for passing
Transmission of data, including upload, downloading data；The memory can store for up to 90 minutes user's breath datas.
Wherein, user oxygen consumption (VO2) value can use following formula (1) and formula (2) in the microprocessor into
Row, which calculates, to be obtained:
VO2=SV × HR × C (a-v) O2 (1)
Wherein, SV is stroke output, and HR is heart rate, and Hb is hemoglobin concentration, and PO2 is partial pressure of oxygen, and C (a-v) O2 is
Artery-vein oxygen content is poor (Arterial-venous oxygen content difference), indicates that tissue absorbs oxygen
The number of tolerance, needed for reflecting that stroke output (SV) is not applied if the numerical value is excessive；
Wherein, the heart rate (HR) is obtained by heart rate acquisition device acquisition, and is transmitted to the microprocessor；
Wherein, stroke output (Stroke Volume, abbreviation SV) gradually increases in trained and untrained tested user
Add up to maximal oxygen uptake (VO2max), and stroke output (SV) is related with heart rate (HR).It is being moved according to specific crowd
Relationship between middle heart rate (HR) and stroke output (SV) establishes model, can calculate stroke output according to heart rate (HR)
(SV), according to formula (3), wherein the parameter C in the formula is adjusted for different sexes: where can be set to women C
=0.096 ± 0.018, male C=0.154 ± 0.018.
SV=C (1-e-0.0132(HR-27.45)) (3)
Wherein, the numerical value of partial pressure of oxygen (PO2) is acquired by oxygen sensor 5 obtains and is transmitted to the microprocessor 8, and logical
The numerical value of temperature and atmospheric pressure that excess temperature and baroceptor 7 continuously measure realizes automatic air pressure and temperature-compensating, from
And it realizes numerical value and calibrates；The air pressure and temperature-compensating processing are realized in microprocessor 8.
Wherein, according to aerobic hemoglobin (HbO2), deoxyhemoglobin (HHb) to the absorption characteristic of near infrared spectrum,
There is oxygen saturation (S in formula (2)VO2) and hemoglobin concentration (Hb) by the near infrared spectrum in the oxygenation device 2
(NIRS) sensor measurement obtains, and is transmitted to the microprocessor 8.
Wherein, temperature and atmospheric pressure data that the temperature and baroceptor 7 continuously measure, and by collected temperature
And atmospheric pressure data are transmitted to the microprocessor 8.
It calculated using the analysis software run on microprocessor 8, analyze and exhaled measured by the portable V O2 detection device
Inhale data.
The software run in the microprocessor 8 is with the following functions:
The individual information of input user can be selected by the touching display screen, such as smoke, excessive drinking and motion conditions；
Recording and storage user rest and the pulmonary status under motion state, pressure value, blood lipid value, heart rate value；
The pulmonary status, blood pressure values, blood lipid numerical value, HR values may be from motion monitoring equipment, such as Polar
Watch。
According to user information and the data of record, the body-building analysis report of user is provided, including oxygen consumption (VO2) is in fact
Personalization of the actual value with predicted value, heart rate and breathing reserve value, based on lactic acid threshold value is trained heart rate, reasonable weight range and is built
Discuss loss of weight value.
According to user information and the data of record, the trend analysis of user is provided；For example, in a training time section
Repeatedly measurement, then draws lactic acid threshold figure, and oxygen consumes the peak value of (VO2) as time changing curve is to observe ambient enviroment
How condition influences oxygen uptake.
The software can on the touching display screen interactively displays temperature, humidity and change of atmospheric pressure with true
The raw accurate oxygen concentration of fixed output quota.
Wherein, the communication module 9 is connected to the microprocessor 8, and the communication module 9 sends data, information to
External equipment, the external equipment include mobile phone, computer, PDA etc.；It is used between the communication module and external equipment
Bluetooth, WIFI etc. are communicated.
Wherein, the display screen 10 is connected to the microprocessor 8, and the display screen 10 can show that oxygen consumes
(VO2) relevant information；The display screen 10 can be touching display screen, while showing oxygen consumption relevant information,
User is allowed to carry out touch input, to provide more preferably man-machine interaction experience.
Implement the embodiment of the present invention, will have the following beneficial effects:
Portable V O2 detection device proposed by the invention is a kind of portable device, be very suitable to training and
It teaches, the application scenarios of scientific research and physical education.By an available interactive interface, examined in the portable V O2
The data stored in measurement equipment can be uploaded just and be downloaded in other equipment, such as in personal computer, for use in user into
Row analysis, tracking and editor's corresponding program.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, can't be such that the essence of corresponding technical solution departs from the spirit and scope of the technical scheme of various embodiments of the present invention.
Claims (8)
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| CN201811505422.9A CN109692000A (en) | 2018-12-10 | 2018-12-10 | Portable V O2 detection device |
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Application publication date: 20190430 |