CN103706009B - The oxygen output control system of a kind of synchronized with breath and control method - Google Patents
The oxygen output control system of a kind of synchronized with breath and control method Download PDFInfo
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- CN103706009B CN103706009B CN201310676270.XA CN201310676270A CN103706009B CN 103706009 B CN103706009 B CN 103706009B CN 201310676270 A CN201310676270 A CN 201310676270A CN 103706009 B CN103706009 B CN 103706009B
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Abstract
The present invention provides a kind of oxygen output control system and the control method of synchronized with breath, comprise the temperature sensor being connected with micro-chip being located in breather mask, single-chip computer control system, with the storing device that oxygen input terminus is connected, and export air valve by monolithic processor controlled oxygen, temperature sensor can by the respiratory movement Signal transmissions of people to micro-chip, micro-chip controls oxygen according to this signal and exports the unlatching of air valve and close, oxygen is exported synchronous with the respiratory movement of people, when air valve is closed, oxygen is stored in oxygen storing device, the present invention gathers human body respiration signal by micro-chip, and then the switch of control oxygen output, achieving oxygen exports synchronous with human body respiration, avoid the waste of oxygen to greatest extent, optimize the output of oxygen, stability height, it is particularly suitable for small power, powered battery, the oxygen of the oxygen machine that individual or family use exports control.
Description
Technical field
The invention belongs to health care, healthcare field, it is specifically related to oxygen output control system and the control method of a kind of synchronized with breath.
Background technology
Along with the continuous progress of medical condition and science and technology, this methods for the treatment of originally just having within the hospital of oxygen therapy (oxygen uptake) is used widely gradually, even starts to enter into family. In general, current inhalation device, the only function of Flow-rate adjustment and increase humidity, it is continuous print that oxygen exports, and clinically during oxygen therapy, the output of oxygen is continuous print, no matter that is people is in air-breathing or expiration, all can not stopping, this kind of control Measures compare is easy. But owing to the conveying of oxygen does not reach synchronous with breathing, just make a large amount of oxygen be wasted when people exhales. This kind is huge under the good environment of medical condition such as being wasted in institute, but not remarkable. But under some particular surroundings, as when oxygen-producing amount be not inherently very sufficient, oxygen lack when, these oxygen being wasted just seem precious, and offering oxygen way traditional at present just seems both uneconomical, also not science. Invent a kind of Controlling System that can stop this kind of huge waste, there is great Social benefit and economic benefit, and existing market there is no the oxygen output control system that can solve this kind of waste.
Summary of the invention
It is an object of the invention to provide the oxygen output control system of a kind of synchronized with breath and control method.
For achieving the above object, present invention employs following technical scheme.
An oxygen output control system for synchronized with breath, comprises respiratory movement signal acquisition module, micro-chip and exports air valve by the oxygen of described micro-chip control opening and closing, and described respiratory movement signal acquisition module is connected with described micro-chip.
The air outlet that described oxygen exports air valve is connected with breather mask, and respiratory movement signal acquisition module comprises the temperature sensor being arranged in breather mask.
The inlet mouth that described oxygen exports air valve is connected with gas storage device, and oxygen is exported air valve and is connected with oxygen conveying pipe by gas storage device.
Described gas storage device is air bag.
The control method of the oxygen output control system of above-mentioned synchronized with breath, comprises the following steps:
When using breather mask to carry out oxygen uptake, described micro-chip judges the respiratory movement of people according to the signal that respiratory movement signal acquisition module gathers, if air-breathing action, then micro-chip control oxygen exports air valve unlatching, if exhale action, then micro-chip control oxygen exports air valve closedown.
The temperature of nasal cavity is carried out continuous acquisition by the temperature sensor being arranged in breather mask by described micro-chip control, the respiratory movement of people is judged by micro-chip according to the temperature signal of temperature sensor collection, when judging people's air-breathing, micro-chip exports control signal and controls the output air valve unlatching of described oxygen, when judging that people exhales, micro-chip exports control signal and controls the output air valve cut out of described oxygen.
The output signal of described temperature sensor is amplified through amplifier, and then through sending in micro-chip after low-pass filtering.
The program that the control oxygen that described micro-chip adopts exports air valve opening and closing comprises the following steps:
1) after system power-up starts, exporting air valve by micro-chip oxygen supply and send an initiating signal, oxygen exports air valve and opens rear oxygen delivery to breather mask;
2) after step 1), micro-chip gathers the temperature value of nasal cavity in real time, and records current time temperature value TnThe temperature value T in two moment aboven-1And Tn-2, then judge Tn��Tn-1And Tn-2Between relation: if Tn-2>Tn-1>Tn, illustrate that breathing process does not also terminate, then continue record temperature value, and compare; If Tn-1It is less than TnAnd Tn-2, illustrating that breathing process terminates, then micro-chip oxygen supply exports air valve and sends closedown signal, and oxygen exports air valve and closes, and then continues record temperature value, and compares; If Tn-2<Tn-1<Tn, illustrate that exhalation process does not also terminate, then continue record temperature value, and compare; If Tn-1It is greater than TnAnd Tn-2, illustrating that exhalation process terminates, then micro-chip oxygen supply exports air valve and sends initiating signal, and oxygen exports air valve and opens;
3) circulation step 2), it is achieved the oxygen supply of breather mask reaches synchronous with respiratory movement.
Exporting between air valve closed-down period at described oxygen, the oxygen storage exported continuously by oxygen conveying pipe is in the gas storage device being connected with the inlet mouth of oxygen output air valve, and when next time, oxygen exports the oxygen input breather mask stored when air valve is opened.
The useful effect of the present invention is embodied in:
The present invention utilizes described respiratory movement signal acquisition module, can by the respiratory movement Signal transmissions of people to micro-chip, micro-chip controls, according to this signal, the open and close that oxygen exports air valve, oxygen is exported synchronous with the respiratory movement of people, avoids the waste of oxygen to greatest extent.
The present invention utilizes the temperature changing regularity of nasal cavity in respiratory, the temperature signal of nasal cavity when obtaining human body respiration by micro-chip collection, and then control oxygen exports the switch of air valve, achieve to maximum degree oxygen and export synchronous with human body respiration, avoid the waste of oxygen to greatest extent.
Accompanying drawing explanation
Fig. 1 is the overall 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 the sequence of control schema of the present invention (main program flow chart);
Fig. 4 is two (AD interrupt routine schemas) of the sequence of control schema 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 breather mask.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
See Fig. 1 and Fig. 2, the oxygen output control system of synchronized with breath of the present invention comprises respiratory movement signal acquisition module, micro-chip (MSP430F2410) and can adopt medical two logical electromagnetic gas valves by the oxygen output air valve 3(oxygen output air valve of described micro-chip control opening and closing), described respiratory movement signal acquisition module is connected with described micro-chip; The air outlet that described oxygen exports air valve 3 is connected with breather mask 4, respiratory movement signal acquisition module comprises the temperature sensor (AD592) being arranged in breather mask 4, the output signal of temperature sensor is amplified through amplifier, and then after low-pass filtering, send into the ADC(analog to digital converter in micro-chip); The inlet mouth that described oxygen exports air valve 3 is connected with gas storage device, and oxygen is exported air valve and is connected with oxygen conveying pipe 1 by gas storage device, and described gas storage device is air bag 2. Air bag acts on not quite under the environment that the oxygen supply conditions such as hospital are good, but when small power oxygen generating plant (such as portable, small-sized oxygen machine etc.) oxygen supply, due to the closed of air valve and unlatching, the continuous change of pressure in oxygen conveying pipe can be caused, and the equipment of low-power consumption often carrying load ability is limited, so front end oxygen generating plant can directly be affected such as the steady work of air pump, motor etc., the long-term suddenly big or suddenly small work-ing life that also can affect oxygen generating plant. The effect of buffering air pressure fluctuation can be effectively played as the air bag of storing device, so air bag is useful to the steady work of small power oxygen generating plant and work-ing life here.
AD592 is the ic temperature transducer of a high precision, low-power consumption, and its output characteristic is: 1uA/K, and temperature-measuring range is :-25 DEG C to 105 DEG C, survey temperature requirement when can meet breathing detection.
MSP430F2410 a is suitable for the low-power consumption of medical use, the mixed-signal processor of 16, this integrated chip more rich interior peripheral hardware. They are guard the gate dog (WDT), analog comparator A, timer A0(Timer_A0 respectively), timer A1(Timer_A1), timer B0(Timer_B0), UART, SPI, I2C, hardware multiplier, liquid crystal driver, 12 ADC, DMA, I/O ports, basic timer (BasicTimer), the different of some peripheral modules such as real-time clock (RTC) and USB controller combine. Wherein, dog of guarding the gate can make to reset rapidly during program out of control; Analog comparator carries out the comparison of analog voltage, coordinates timer, can design A/D converter, it is achieved 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 be produced by oxygen machine, and is stored in air bag 2 by oxygen conveying pipe 1, and oxygen exports air valve 3 and opens or closes successively according to the breathing state of human body, then, then gives human body by breather mask 4 oxygen delivery. Wherein, oxygen exports the control of air valve 3 by the micro-chip shown in Fig. 2.
The control method of the oxygen output control system of above-mentioned synchronized with breath, comprises the following steps:
When using breather mask 4 to carry out oxygen uptake, described micro-chip judges the respiratory movement of people according to the signal that respiratory movement signal acquisition module gathers, if air-breathing action, then micro-chip control oxygen output air valve 3 is opened, if exhale action, then micro-chip control oxygen output air valve 3 is closed. Specifically, the temperature of nasal cavity is carried out continuous acquisition by the temperature sensor being arranged in breather mask 4 by described micro-chip control, the respiratory movement of people is judged by micro-chip according to the temperature signal of temperature sensor collection, when judging people's air-breathing, micro-chip output control signal controls described oxygen output air valve 3 and opens, when judging that people exhales, micro-chip output control signal controls described oxygen output air valve 3 and closes.
See Fig. 2, temperature sensor (AD592) is fixed on nasal cavity, the temperature variation that real-time perception nasal cavity causes owing to breathing. The output signal of temperature sensor is amplified through amplifier, and then after low-pass filtering, sends into the ADC(analog to digital converter in micro-chip (MSP430F2410)), the analog temperature signal gathered is converted to corresponding numerary signal. And then judge current temperature value by internal control program, to determine whether that opening or close oxygen exports air valve 3.
The sequence of control flow process of the present invention is as follows:
See Fig. 3, after system power-up starts, first, micro-chip exports air valve 3 by numeral I/O mouth oxygen supply and sends an initiating signal, opens oxygen and exports air valve 3, allows oxygen be carried to human body by breather mask 4. Secondly, restart ADC transmodulator, gather the temperature value of human body nasal cavity in real time, record current time temperature value TnThe temperature value T in two moment aboven-1And Tn-2, and judge Tn, Tn-1And Tn-2Between relation. If Tn-2>Tn-1>Tn, then illustrate that the breathing process of human body does not also terminate, then continue record temperature value, and compare; If Tn-1It is less than TnAnd Tn-2, then illustrate that the breathing process of human body terminates, now micro-chip oxygen supply exports air valve and sends closedown signal, turns off oxygen and exports air valve. Then continue record temperature signal, and compare. If Tn-2<Tn-1<Tn, then illustrate that the exhalation process of human body does not also terminate, then continue record temperature value, and compare; If Tn-1It is greater than TnAnd Tn-2, then illustrate that the exhalation process of human body terminates, now need to open oxygen and export air valve, to human body delivering oxygen, and make and open the temperature threshold value T that oxygen exports air valveOpen=Tn-2. Finally enter circular wait 1, and judge whether wait=1 sets up. Continuing circular wait 1 if be false, if set up, then judging Tn, Tn-1And Tn-2Between relation. If Tn-2>Tn-1>Tn, then illustrate that the breathing process of human body does not also terminate, continue circular wait 1; If Tn-1It is less than TnAnd Tn-2, then illustrate that the breathing process of human body terminates, at this moment need to close oxygen and export 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 TnWith TOpenRelation. If Tn>TOpen, then illustrating that exhalation process closes to an end, this needs to open oxygen in advance to export air valve, prepares to human body delivering oxygen, and makes TOpen=Tn, wait=0, then enters circular wait 1; If Tn<TOpen, then T is comparedn, Tn-1And Tn-2Between relation. If Tn-2<Tn-1<Tn, then illustrate that the exhalation process of human body does not also terminate, then continue circular wait 2;If Tn-1It is greater than TnAnd Tn-2, then illustrate that the exhalation process of human body terminates, now need to open oxygen and export air valve, to human body delivering oxygen, and make TOpen=Tn-2, wait=0, then enters circular wait 1. So move in circles, it is achieved oxygen supply reaches synchronous object with human body respiration.
See Fig. 4, in AD interrupt routine, first according to up-to-date Data Update Current Temperatures and the temperature in the first two moment of AD collection, and then make wait=1, finally exit interruption. AD interrupt routine main task is exactly real-time update Current Temperatures TnThe temperature T in two moment aboven-1And Tn-2��
Present invention optimizes the output of oxygen, make the output of oxygen substantially reach synchronously with human body respiration, stability height, the oxygen being particularly suitable for the oxygen machine that small power, powered battery, individual or family use exports control.
Claims (9)
1. the oxygen output control system of a synchronized with breath, it is characterized in that: comprise respiratory movement signal acquisition module, micro-chip and export air valve (3) by the oxygen of described micro-chip control opening and closing, described respiratory movement signal acquisition module is connected with described micro-chip, and respiratory movement signal acquisition module comprises the temperature sensor being arranged in breather mask (4); Micro-chip gathers the temperature value of nasal cavity in real time, and records current time temperature value TnThe temperature value T in two moment aboven-1And Tn-2, when using breather mask (4) to carry out oxygen uptake, the signal that described micro-chip gathers according to respiratory movement signal acquisition module, judges Tn��Tn-1And Tn-2Between relation, thus judge the respiratory movement of people, if air-breathing action, then micro-chip control oxygen export air valve (3) open, if exhale action, then micro-chip control oxygen export air valve (3) close.
2. the oxygen output control system of a kind of synchronized with breath according to claim 1, it is characterised in that: the air outlet that described oxygen exports air valve (3) is connected with breather mask (4).
3. the oxygen output control system of a kind of synchronized with breath according to claim 1, it is characterized in that: the inlet mouth that described oxygen exports air valve (3) is connected with gas storage device, oxygen is exported air valve (3) and is connected with oxygen conveying pipe (1) by gas storage device.
4. the oxygen output control system of a kind of synchronized with breath according to claim 3, it is characterised in that: described gas storage device is air bag (2).
5. the control method of the oxygen output control system of synchronized with breath as claimed in claim 1, it is characterised in that: comprise the following steps:
When using breather mask (4) to carry out oxygen uptake, described micro-chip judges the respiratory movement of people according to the signal that respiratory movement signal acquisition module gathers, if air-breathing action, then micro-chip control oxygen exports air valve (3) unlatching, if exhale action, then micro-chip control oxygen exports air valve (3) closedown, and this control method is used for non-treatment object.
6. the control method of the oxygen output control system of a kind of synchronized with breath according to claim 5, it is characterized in that: the temperature of nasal cavity is carried out continuous acquisition by the temperature sensor being arranged in breather mask (4) by described micro-chip control, the respiratory movement of people is judged by micro-chip according to the temperature signal of temperature sensor collection, when judging people's air-breathing, micro-chip exports control signal and controls described oxygen output air valve (3) unlatching, when judging that people exhales, micro-chip exports control signal and controls described oxygen output air valve (3) cut out.
7. the control method of the oxygen output control system of a kind of synchronized with breath according to claim 6, it is characterised in that: the output signal of described temperature sensor is amplified through amplifier, and then through sending in micro-chip after low-pass filtering.
8. the control method of the oxygen output control system of a kind of synchronized with breath according to claim 6, it is characterised in that: the program that the control oxygen that described micro-chip adopts exports air valve opening and closing comprises the following steps:
1) after system power-up starts, exporting air valve (3) by micro-chip oxygen supply and send an initiating signal, after oxygen output air valve (3) unlatching, oxygen delivery is to breather mask (4);
2) through step 1) after, micro-chip gathers the temperature value of nasal cavity in real time, and records current time temperature value TnThe temperature value T in two moment aboven-1And Tn-2, then judge Tn��Tn-1And Tn-2Between relation: if Tn-2>Tn-1>Tn, illustrate that breathing process does not also terminate, then continue record temperature value, and compare; If Tn-1It is less than TnAnd Tn-2, illustrating that breathing process terminates, then micro-chip oxygen supply exports air valve (3) and sends closedown signal, and oxygen exports air valve (3) and closes, and then continues record temperature value, and compares; If Tn-2<Tn-1<Tn, illustrate that exhalation process does not also terminate, then continue record temperature value, and compare; If Tn-1It is greater than TnAnd Tn-2, illustrating that exhalation process terminates, then micro-chip oxygen supply exports air valve (3) and sends initiating signal, and oxygen exports air valve (3) and opens;
3) circulation step 2), it is achieved the oxygen supply of breather mask (4) reaches synchronous with respiratory movement.
9. the control method of the oxygen output control system of a kind of synchronized with breath according to claim 5, it is characterized in that: export between air valve (3) closed-down period at described oxygen, the oxygen storage exported continuously by oxygen conveying pipe (1) is in the gas storage device being connected with the inlet mouth of oxygen output air valve (3), and when next time, oxygen exports oxygen input breather mask (4) stored when air valve (3) is opened.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN106066270B (en) * | 2016-03-15 | 2019-11-29 | 深圳市先亚生物科技有限公司 | A kind of full-automatic exhalation test device 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 (2)
| 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 |
| CN103041486A (en) * | 2013-01-28 | 2013-04-17 | 韩利亚 | Respiratory assist device and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6441572B2 (en) * | 2011-01-25 | 2018-12-19 | アペリス・ホールディングス，エルエルシー | Apparatus and method for assisting breathing |
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Patent Citations (2)
| 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 |
| CN103041486A (en) * | 2013-01-28 | 2013-04-17 | 韩利亚 | Respiratory assist device and control method thereof |
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