CN103706009A - Breath-synchronized oxygen output control system and control method - Google Patents
Breath-synchronized oxygen output control system and control method Download PDFInfo
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- CN103706009A CN103706009A CN201310676270.XA CN201310676270A CN103706009A CN 103706009 A CN103706009 A CN 103706009A CN 201310676270 A CN201310676270 A CN 201310676270A CN 103706009 A CN103706009 A CN 103706009A
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- oxygen
- air valve
- oxygen output
- breathing
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Abstract
The invention provides a breath-synchronized oxygen output control system and a control method. The system comprises a temperature sensor connected with a singlechip microcomputer in a breathing mask, a singlechip microcomputer control system, a storing device connected with an oxygen input end, and an oxygen output air valve controlled by the singlechip microcomputer, wherein the temperature sensor can transmit the breathing motion signals of a human to the singlechip microcomputer, the singlechip microcomputer controls the oxygen output air valve to be started and closed according to the signals, so that the oxygen output is synchronized with the breathing motion of the human, and an oxygen is stored in the oxygen storing device when the air valve is closed. According to the breath-synchronized oxygen output control system, the breathing signals of the human body are acquired by the singlechip microcomputer to control a switch at the oxygen output end, so that the synchronization between the oxygen output and the breathing of the human body can be realized, the waste of the oxygen can be maximally prevented, the output of the oxygen can be optimized, and the stability is high; and specifically, the breath-synchronized oxygen output control system is suitable for the oxygen output control of battery powered oxygen machines with small power, which are utilized by either persons or families.
Description
Technical field
The invention belongs to health care, healthcare field, be specifically related to a kind of breathe synchronous oxygen output control system and control method.
Background technology
Along with the continuous progress of medical condition and science and technology, this Therapeutic Method originally just having in hospital of oxygen therapy (oxygen uptake) is used widely gradually, even starts to enter into family.In general, current inhalation device, only has Flow-rate adjustment and the function that increases humidity, oxygen output is continuous, and during oxygen therapy, the output of oxygen is continuous clinically, no matter that is to say that people is in air-breathing or expiration, can not stop, this control method is easier.But because the conveying of oxygen does not reach and synchronizes with breathing, just make a large amount of oxygen be wasted when people exhales.This to be wasted in institute etc. under the good environment of medical condition be huge, but not remarkable.Yet under some special environment, as not being just that in situation very sufficient, that oxygen lacks, these oxygen that are wasted just seem precious when oxygen-producing amount itself, current traditional oxygen supply mode just seems both uneconomical, also science not.Invent a kind of control system that can stop this huge waste, there is great Social benefit and economic benefit, and there is no in the market the oxygen output control system that can solve this waste.
Summary of the invention
The object of the present invention is to provide a kind of breathe synchronous oxygen output control system and control method.
For achieving the above object, the present invention has adopted following technical scheme.
Breathe a synchronous oxygen output control system, the oxygen output air valve that comprises respiratory movement signal acquisition module, single-chip microcomputer and opened and closed by described Single-chip Controlling, described respiratory movement signal acquisition module is connected with described single-chip microcomputer.
The gas outlet of described oxygen output air valve is connected with breathing mask, and respiratory movement signal acquisition module comprises the temperature sensor being arranged in breathing mask.
The air inlet of described oxygen output air valve is connected with atmosphere storage device, and oxygen output air valve is connected with oxygen conveying pipe by atmosphere storage device.
Described atmosphere storage device is air bag.
The control method of the oxygen output control system that above-mentioned breathing is synchronous, comprises the following steps:
When using breathing mask to carry out oxygen uptake, the signal judgement people's that described single-chip microcomputer gathers according to respiratory movement signal acquisition module respiratory movement, if aspiratory action, Single-chip Controlling oxygen output air valve is opened, if exhale action, Single-chip Controlling oxygen output air valve is closed.
The temperature sensor being arranged in breathing mask by described Single-chip Controlling is carried out continuous acquisition to the temperature of nasal cavity, single-chip microcomputer judges people's respiratory movement according to the temperature signal of temperature sensor collection, when judgement people is air-breathing, single-chip microcomputer output control signal is controlled described oxygen output air valve and is opened, when judgement people exhales, single-chip microcomputer output control signal is controlled described oxygen output air valve and is closed.
The output signal of described temperature sensor is amplified through amplifier, and then sends in single-chip microcomputer after low-pass filtering.
The program that the control oxygen output air valve that described single-chip microcomputer adopts opens and closes comprises the following steps:
1) after system power-up starts, by single-chip microcomputer oxygen supply output air valve, send an enabling signal, after the unlatching of oxygen output air valve, oxygen delivery is to breathing mask;
2) after step 1), the temperature value of single-chip microcomputer Real-time Collection nasal cavity, and record current time temperature value T
nthe temperature value T in two moment above
n-1and T
n-2, then judge T
n, T
n-1and T
n-2between relation: if T
n-2>T
n-1>T
n, illustrate that breathing process does not also finish, continue to record temperature value, and compare; If T
n-1be less than T
nand T
n-2, illustrate that breathing process finishes, single-chip microcomputer oxygen supply output air valve sends shutdown signal, and oxygen output air valve is closed, and then continues to record temperature value, and compares; If T
n-2<T
n-1<T
n, illustrate that exhalation process does not also finish, continue to record temperature value, and compare; If T
n-1be greater than T
nand T
n-2, illustrate that exhalation process finishes, single-chip microcomputer oxygen supply output air valve sends enabling signal, and oxygen output air valve is opened;
3) circulation step 2), the oxygen supply that realizes breathing mask reaches and synchronizes with respiratory movement.
In the described oxygen output air valve down periods, by the oxygen of oxygen conveying pipe continuous wave output, be stored in the atmosphere storage device being connected with the air inlet of oxygen output air valve the oxygen input breathing mask of storage when the air valve of oxygen output is next time opened.
Beneficial effect of the present invention is embodied in:
The present invention utilizes described respiratory movement signal acquisition module, people's respiratory movement signal can be transferred to single-chip microcomputer, single-chip microcomputer, according to the open and close of this signal controlling oxygen output air valve, makes oxygen output synchronize with people's respiratory movement, has avoided to greatest extent the waste of oxygen.
The present invention utilizes the temperature changing regularity of nasal cavity in respiratory, the temperature signal of nasal cavity while obtaining human body respiration by single-chip microcomputer collection, and then control the switch of oxygen output air valve, and farthest realized synchronizeing of oxygen output and human body respiration, avoided to greatest extent the waste of oxygen.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of oxygen output control system of the present invention;
Fig. 2 is signals collecting and the output principle block diagram of oxygen output control system of the present invention;
Fig. 3 is one of control sequence flow chart of the present invention (main program flow chart);
Fig. 4 is two (AD interrupt routine flow charts) of control sequence flow chart of the present invention;
In figure: 1 is oxygen conveying pipe, 2 is air bag, and 3 is oxygen output air valve, and 4 is breathing mask.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Referring to Fig. 1 and Fig. 2, the synchronous oxygen output control system of breathing of the present invention comprises respiratory movement signal acquisition module, single-chip microcomputer (MSP430F2410) and the oxygen output air valve 3(oxygen output air valve that opened and closed by described Single-chip Controlling can adopt medical two logical electromagnetic gas valves), described respiratory movement signal acquisition module is connected with described single-chip microcomputer; The gas outlet of described oxygen output air valve 3 is connected with breathing mask 4, respiratory movement signal acquisition module comprises the temperature sensor (AD592) being arranged in breathing mask 4, the output signal of temperature sensor is amplified through amplifier, and then after low-pass filtering, send into the ADC(analog-digital converter in single-chip microcomputer); The air inlet of described oxygen output air valve 3 is connected with atmosphere storage device, and oxygen output air valve is connected with oxygen conveying pipe 1 by atmosphere storage device, and described atmosphere storage device is air bag 2.Air bag acts on not quite under the good environment of the oxygen supply conditions such as hospital, but when small-power oxygen generating plant (as portable, small oxygen mechanism of qi etc.) oxygen supply, closed and unlatching due to air valve, can cause the continuous variation of oxygen conveying pipe internal pressure, and the equipment of low-power consumption often carrying load ability is limited, so can directly affect front end oxygen generating plant as the smooth working of air pump, motor etc., the long-term suddenly big or suddenly small service life that also can affect oxygen generating plant.As the air bag of storage device, can effectively play the effect of buffering air pressure fluctuation here, so air bag is useful to the smooth working of small-power oxygen generating plant and service life.
AD592 is the ic temperature transducer of a high accuracy, low-power consumption, and its output characteristics is: 1uA/K, and temperature-measuring range is :-25 ℃ to 105 ℃, the thermometric requirement in the time of can meeting respiration detection.
MSP430F2410 is a low-power consumption of medical application, the mixed-signal processor of 16 of being suitable for, this integrated chip more rich interior peripheral hardware.They are respectively house dog (WDT), analog comparater A, intervalometer A0(Timer_A0), intervalometer A1(Timer_A1), intervalometer B0(Timer_B0), the various combination of some peripheral modules such as UART, SPI, I2C, hardware multiplier, liquid crystal driver, 12 ADC, DMA, I/O port, basic intervalometer (Basic Timer), real-time clock (RTC) and USB controllers.When wherein, house dog can make program out of control, reset rapidly; Analog comparater carries out the comparison of analog voltage, coordinates intervalometer, can design A/D converter, realizes the Real-time Collection of nasal cavity temperature signal, and utilizes its abundant I/O resource can realize the automatic control to electromagnetic gas valve.
In the present invention, oxygen can produce by oxygen machine, and is stored in air bag 2 by oxygen conveying pipe 1, and oxygen output air valve 3 opens or closes successively according to the breathing state of human body, then, then oxygen delivery, gives human body by breathing mask 4.Wherein, oxygen output air valve 3 is subject to the control of the single-chip microcomputer shown in Fig. 2.
The control method of the oxygen output control system that above-mentioned breathing is synchronous, comprises the following steps:
When using breathing mask 4 to carry out oxygen uptake, the signal judgement people's that described single-chip microcomputer gathers according to respiratory movement signal acquisition module respiratory movement, if aspiratory action, Single-chip Controlling oxygen output air valve 3 is opened, if exhale action, Single-chip Controlling oxygen output air valve 3 is closed.Particularly, the temperature sensor being arranged in breathing mask 4 by described Single-chip Controlling is carried out continuous acquisition to the temperature of nasal cavity, single-chip microcomputer judges people's respiratory movement according to the temperature signal of temperature sensor collection, when judgement people is air-breathing, single-chip microcomputer output control signal is controlled described oxygen output air valve 3 and is opened, when judgement people exhales, single-chip microcomputer output control signal is controlled described oxygen output air valve 3 and is closed.
Referring to Fig. 2, nasal cavity is fixed in temperature sensor (AD592), the variations in temperature that real-time perception nasal cavity causes due to breathing.The output signal of temperature sensor is amplified through amplifier, and then after low-pass filtering, sends into the ADC(analog-digital converter in single-chip microcomputer (MSP430F2410)), the analog temperature signal gathering is converted to corresponding digital signal.And then judge current temperature value by Internal Control Procedure, to determine whether to open or close oxygen output air valve 3.
Control sequence flow process of the present invention is as follows:
Referring to Fig. 3, after system power-up starts, first, single-chip microcomputer sends an enabling signal by digital I/O mouth oxygen supply output air valve 3, opens oxygen output air valve 3, allows oxygen flow to human body by breathing mask 4.Secondly, restart ADC transducer, the temperature value of Real-time Collection human nasal intracavity, records current time temperature value T
nthe temperature value T in two moment above
n-1and T
n-2, and judge T
n, T
n-1and T
n-2between relation.If T
n-2>T
n-1>T
n, illustrate that the breathing process of human body does not also finish, continue to record temperature value, and compare; If T
n-1be less than T
nand T
n-2, illustrating that the breathing process of human body finishes, now single-chip microcomputer oxygen supply output air valve sends shutdown signal, turn-offs oxygen output air valve.Then continue to record temperature signal, and compare.If T
n-2<T
n-1<T
n, illustrate that the exhalation process of human body does not also finish, continue to record temperature value, and compare; If T
n-1be greater than T
nand T
n-2, illustrate that the exhalation process of human body finishes, now need to open oxygen output air valve, give human body delivering oxygen, and the temperature threshold T of oxygen output air valve is opened in order
open=T
n-2.Finally enter circular wait 1, and judge whether wait=1 sets up.If be false, continue circular wait 1, if set up, judge T
n, T
n-1and T
n-2between relation.If T
n-2>T
n-1>T
n, illustrate that the breathing process of human body does not also finish, continue circular wait 1; If T
n-1be less than T
nand T
n-2, illustrate that the breathing process of human body finishes, at this moment need to close oxygen output air valve, and make wait=0, then enter circular wait 2, and judge whether wait=1 sets up.If be false, continue circular wait 2; If set up, compare current temperature value T
nwith T
openrelation.If T
n>T
open, illustrating that exhalation process closes to an end, this is to open in advance oxygen output air valve, prepares to human body delivering oxygen, and makes T
open=T
n, wait=0, then enters circular wait 1; If T
n<T
open, compare T
n, T
n-1and T
n-2between relation.If T
n-2<T
n-1<T
n, illustrate that the exhalation process of human body does not also finish, continue circular wait 2; If T
n-1be greater than T
nand T
n-2, illustrate that the exhalation process of human body finishes, now need to open oxygen output air valve, give human body delivering oxygen, and make T
open=T
n-2, wait=0, then enters circular wait 1.So move in circles, realize oxygen supply and reach the object of synchronizeing with human body respiration.
Referring to Fig. 4, in AD interrupt routine, the latest data first gathering according to AD upgrades Current Temperatures and the first two temperature constantly, and then makes wait=1, finally exits interruption.AD interrupt routine main task is exactly real-time update Current Temperatures T
nthe temperature T in two moment above
n-1and T
n-2.
The present invention has optimized the output of oxygen, and the output of oxygen has been reached synchronously substantially with human body respiration, and stability is high, and the oxygen output that is particularly suitable for the oxygen machine of small-power, battery powered, individual or family's use is controlled.
Claims (9)
1. breathe synchronous oxygen output control system for one kind, it is characterized in that: the oxygen output air valve (3) that comprises respiratory movement signal acquisition module, single-chip microcomputer and opened and closed by described Single-chip Controlling, described respiratory movement signal acquisition module is connected with described single-chip microcomputer.
2. a kind ofly according to claim 1 breathe synchronous oxygen output control system, it is characterized in that: the gas outlet of described oxygen output air valve (3) is connected with breathing mask (4), respiratory movement signal acquisition module comprises the temperature sensor being arranged in breathing mask (4).
3. a kind ofly according to claim 1 breathe synchronous oxygen output control system, it is characterized in that: the air inlet of described oxygen output air valve (3) is connected with atmosphere storage device, oxygen output air valve (3) is connected with oxygen conveying pipe (1) by atmosphere storage device.
4. a kind ofly according to claim 4 breathe synchronous oxygen output control system, it is characterized in that: described atmosphere storage device is air bag (2).
5. a control method of breathing as claimed in claim 1 synchronous oxygen output control system, is characterized in that: comprise the following steps:
When using breathing mask (4) to carry out oxygen uptake, the signal judgement people's that described single-chip microcomputer gathers according to respiratory movement signal acquisition module respiratory movement, if aspiratory action, Single-chip Controlling oxygen output air valve (3) is opened, if exhale action, Single-chip Controlling oxygen output air valve (3) is closed.
6. a kind of control method of breathing synchronous oxygen output control system according to claim 5, it is characterized in that: the temperature sensor being arranged in breathing mask (4) by described Single-chip Controlling is carried out continuous acquisition to the temperature of nasal cavity, single-chip microcomputer judges people's respiratory movement according to the temperature signal of temperature sensor collection, when judgement people is air-breathing, single-chip microcomputer output control signal is controlled described oxygen output air valve (3) and is opened, when judgement people exhales, single-chip microcomputer output control signal is controlled described oxygen output air valve (3) and is closed.
7. a kind of control method of breathing synchronous oxygen output control system according to claim 6, is characterized in that: the output signal of described temperature sensor is amplified through amplifier, and then sends in single-chip microcomputer after low-pass filtering.
8. a kind of control method of breathing synchronous oxygen output control system according to claim 6, is characterized in that: the program that the control oxygen output air valve that described single-chip microcomputer adopts opens and closes comprises the following steps:
1) after system power-up starts, by single-chip microcomputer oxygen supply output air valve (3), send an enabling signal, after oxygen output air valve (3) unlatching, oxygen delivery is to breathing mask (4);
2) after step 1), the temperature value of single-chip microcomputer Real-time Collection nasal cavity, and record current time temperature value T
nthe temperature value T in two moment above
n-1and T
n-2, then judge T
n, T
n-1and T
n-2between relation: if T
n-2>T
n-1>T
n, illustrate that breathing process does not also finish, continue to record temperature value, and compare; If T
n-1be less than T
nand T
n-2, illustrate that breathing process finishes, single-chip microcomputer oxygen supply output air valve (3) sends shutdown signal, and oxygen output air valve (3) is closed, and then continues to record temperature value, and compares; If T
n-2<T
n-1<T
n, illustrate that exhalation process does not also finish, continue to record temperature value, and compare; If T
n-1be greater than T
nand T
n-2, illustrate that exhalation process finishes, single-chip microcomputer oxygen supply output air valve (3) sends enabling signal, and oxygen output air valve (3) is opened;
3) circulation step 2), the oxygen supply that realizes breathing mask (4) reaches and synchronizes with respiratory movement.
9. a kind of control method of breathing synchronous oxygen output control system according to claim 5, it is characterized in that: in described oxygen output air valve (3) down periods, oxygen by oxygen conveying pipe (1) continuous wave output is stored in the atmosphere storage device being connected with the air inlet of oxygen output air valve (3), the oxygen input breathing mask (4) of storage when oxygen output air valve (3) unlatching next time.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105413033A (en) * | 2015-12-30 | 2016-03-23 | 中国医科大学附属第一医院 | Control method and device for improving effective utilization ratio of oxygen during noninvasive ventilation |
CN106066270A (en) * | 2016-03-15 | 2016-11-02 | 深圳市先亚生物科技有限公司 | A kind of full-automatic exhalation test apparatus and method |
CN109248020A (en) * | 2018-07-19 | 2019-01-22 | 卢加贵 | Zygomoplasty orthopaedics binding device |
WO2020154933A1 (en) * | 2019-01-30 | 2020-08-06 | 唐山哈船科技有限公司 | Medicinal oxygen cannula |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4648395A (en) * | 1982-07-07 | 1987-03-10 | Sanyo Densihkogyo Co. Ltd. | Synchronized feed type oxygen concentrator for use in an open breathing system |
WO2012103216A2 (en) * | 2011-01-25 | 2012-08-02 | Apellis Pharmaceuticals, Inc. | Apparatus and methods for assisting breathing |
CN103041486A (en) * | 2013-01-28 | 2013-04-17 | 韩利亚 | Respiratory assist device and control method thereof |
-
2013
- 2013-12-11 CN CN201310676270.XA patent/CN103706009B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4648395A (en) * | 1982-07-07 | 1987-03-10 | Sanyo Densihkogyo Co. Ltd. | Synchronized feed type oxygen concentrator for use in an open breathing system |
WO2012103216A2 (en) * | 2011-01-25 | 2012-08-02 | Apellis Pharmaceuticals, Inc. | Apparatus and methods for assisting breathing |
CN103041486A (en) * | 2013-01-28 | 2013-04-17 | 韩利亚 | Respiratory assist device and control method thereof |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105413033A (en) * | 2015-12-30 | 2016-03-23 | 中国医科大学附属第一医院 | Control method and device for improving effective utilization ratio of oxygen during noninvasive ventilation |
CN106066270A (en) * | 2016-03-15 | 2016-11-02 | 深圳市先亚生物科技有限公司 | A kind of full-automatic exhalation test apparatus and method |
CN109248020A (en) * | 2018-07-19 | 2019-01-22 | 卢加贵 | Zygomoplasty orthopaedics binding device |
WO2020154933A1 (en) * | 2019-01-30 | 2020-08-06 | 唐山哈船科技有限公司 | Medicinal oxygen cannula |
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