CN103932691B - A kind of electric sphygmomanometer being applicable to any Altitude Regions - Google Patents
A kind of electric sphygmomanometer being applicable to any Altitude Regions Download PDFInfo
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- CN103932691B CN103932691B CN201410184318.XA CN201410184318A CN103932691B CN 103932691 B CN103932691 B CN 103932691B CN 201410184318 A CN201410184318 A CN 201410184318A CN 103932691 B CN103932691 B CN 103932691B
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Abstract
The present invention discloses a kind of electric sphygmomanometer being applicable to any Altitude Regions, it utilizes absolute pressure sensor to gather the environment atmospheric pressure of Altitude Regions, place, this measurement result is used to calibrate gauge pressure transducer pressure measurements, eliminate the measurement skew brought because environment atmospheric pressure is not equal to normal atmospheric pressure, accurately calculate the blood pressure of measurand in residing Altitude Regions, break away from the restriction that electric sphygmomanometer uses region height above sea level.Simultaneously, the present invention also possesses the function that height above sea level is measured, the height above sea level of measurand position can be shown over the display in real time, and can simulate measurand at normal atmospheric pressure blood pressure should interval range, avoid the hypertension mistaken diagnosis brought because of high altitude hypertension phenomenon.
Description
Technical field
The present invention relates to a kind of sphygomanometer, particularly relate to a kind of electric sphygmomanometer being applicable to any Altitude Regions.
Background technology
Existing sphygomanometer, to the assay method of blood pressure, all can be summarized as the method for being carried out blood pressure determination by pulse wave.The method is normally first worn over cuff in left upper arm, then automatic to cuff inflation, when pressure in cuff reaches after certain value (being generally 180 ~ 230mmHg), starts venting.When cuff internal gas pressure is reduced to a certain degree, blood flow just by blood vessel, and has certain wave of oscillation to produce, and the wave of oscillation propagates into the pressure transducer in machine by trachea, and pressure transducer can detect pressure in surveyed cuff and fluctuation in real time.Exit gradually, the wave of oscillation is increasing.Exit again, because the contact of cuff and arm fluffs, the pressure therefore detected by pressure transducer and fluctuation more and more less.Like this, the pulsation produced according to the volume change based on tremulous pulse, just can detect the waveform of pulse wave.The corresponding pulse waveform characteristic quantity of final utilization, just can calculate the physiological parameters such as systolic pressure, diastolic pressure, mean pressure and pulse frequency.
The advantage of above-mentioned measuring method is the labor intensity alleviating doctor, and comparison of coherence is good, there is not the reading difference produced between different doctor.But the method also also exists obvious shortcoming, be subject to external interference, namely owing to adopting gauge pressure transducer to measure real-time pressure numerical value, when external atmospheric pressure is not equal to normal atmospheric pressure, the force value that gauge pressure transducer exports can produce skew, finally causes the inaccurate of measurement result.Thisly to cause due to following reason the inaccurate of non-standard atmospheric pressure occasion measurement result: after collecting cuff dynamic pressure signal by said determination method, usually the measurement result obtaining blood pressure is processed in the following ways, namely cuff dynamic pressure signal is divided into two-way, low pass process is carried out on one tunnel, obtains cuff static pressure signal; Another road carries out being with logical process, and obtain pulse wave fluctuation signal, gained cuff static pressure signal and pulse wave signal should be strictly corresponding in sequential; Pulse wave fluctuation signal is found the characteristic point of systolic pressure, diastolic pressure, and static pressure corresponding to characteristic point position is last systolic pressure, diastolic pressure numerical value.And the Output pressure that gauge pressure transducer is measured is relative to environment atmospheric pressure, i.e. gauge pressure transducer output=absolute pressure-environment atmospheric pressure, when measurement environment atmospheric pressure is not equal to normal atmospheric pressure time, gauge pressure transducer output can produce skew, thus also can produce skew through the cuff static pressure signal of low-pass filtering, the static pressure signal of the Feature point correspondence of the systolic pressure causing calculating, diastolic pressure changes by this, thus causes the inaccurate of measurement result.
In addition, for highlands, when people just support highlands, can produce certain high altitude hyper tensive reactions, concrete manifestation is as follows: in plains region, blood pressure is normal, blood pressure is just had to increase after entering plateau, diastolic pressure at 12.0 kPas (90mmHg), systolic pressure 18.7 kPas (140mmHg) or more than, this kind of crowd is as Returning To Plain, blood pressure can recover normal, and " hypertension " can recover without treatment.The reason producing such phenomenon is, in the atmospheric pressure of highlands, partial pressure of oxygen reduces, and alveolar gas and arterial partial pressure of oxygen also reduce accordingly, and between capillary blood and cell mitochondrial, partial pressure of oxygen gradient difference reduces, thus causes anoxia.If ascended a height gradually, have one to temper the process adapted to, in low oxygen partial pressure environment, can there is a series of compensatory adaptations in body, and as ventilation is strengthened, the diffusing capacity of alveolar membrane improves; Circulatory function is strengthened, and the ability of delivery of oxygen increases; Sympathetic--adrenal system activity strengthens, and the bioactive substance catecholamines that blood pressure can be impelled in blood to increase increases, and cardiac output increases, around thin vessels shrinks, cause elevation of the blood pressure, so just strengthen the perfusion of blood to tissue, have certain adaptation.By these compensations, just can make tissue that oxygen can be utilized to reach or close to normal level.And returning to plains region, compensation disappears, and pressure value progressively can return normal level.As the above analysis, when highlands, if the pressure value be used in measured by locality and World Health Organization (WHO) (WHO) and hypertension alliance of the world (WHL) contrast about the numerical value of hypertensive diagnosis and grade scale, judge whether measurand suffers from hypertension, be easy to the interference being subject to high altitude hypertension phenomenon, thus there is erroneous judgement or mistaken diagnosis, derive a wrong conclusion.
Summary of the invention
The object of the invention is to, by a kind of electric sphygmomanometer being applicable to any Altitude Regions, solve the problem that above background technology part is mentioned.
For reaching this object, the present invention by the following technical solutions:
Be applicable to an electric sphygmomanometer for any Altitude Regions, it comprises: cuff, keyboard, air pump, gauge pressure transducer, absolute pressure sensor, microprocessor, display and gas bleeder valve;
Described cuff is connected with air pump by airway, is fixed on the upper arm of measurand;
Described keyboard is connected with microprocessor, for inputting instruction to microprocessor, triggering and measuring action;
Described air pump is connected with microprocessor, under micro-processor control, pressurizes to cuff inflation;
Described gauge pressure transducer is connected with microprocessor, for gathering cuff dynamic pressure, and being converted into the signal of telecommunication and cuff dynamic pressure signal, exporting to microprocessor;
Described absolute pressure sensor is connected with microprocessor, for gathering the environment atmospheric pressure of Altitude Regions residing for measurand, and being converted into the signal of telecommunication and ambient atmosphere pressure force signal, exporting to microprocessor;
Described microprocessor is connected with display, for utilizing described ambient atmosphere pressure force signal to calibrate described dynamic pressure signal, extracting pulse waveform characteristic quantity, calculating the blood pressure of measurand in residing Altitude Regions, exports to display display;
Described gas bleeder valve is connected with cuff, after completing blood pressure measurement, bleeds off the pressure in cuff.
Especially, described microprocessor specifically for: described cuff dynamic pressure signal is separated into pulse wave fluctuation signal corresponding to sequential and cuff static pressure signal, and utilize described ambient atmosphere pressure force signal to be relative to the measured value under normal atmospheric pressure by described cuff static pressure signal calibration, extract pulse waveform characteristic quantity, calculate the blood pressure of measurand in residing Altitude Regions, export to display display.
Especially, described microprocessor is also for calculating the height above sea level of Altitude Regions residing for measurand according to described ambient atmosphere pressure force signal.
Especially, described microprocessor is further used for according to blood pressure in residing Altitude Regions of the measurand that calculates and height above sea level, simulates the blood pressure of measurand in plains region and standard atmosphere pressure.
The electric sphygmomanometer being applicable to any Altitude Regions provided by the invention utilizes absolute pressure sensor to gather the environment atmospheric pressure of Altitude Regions, place, this measurement result is used to calibrate gauge pressure transducer pressure measurements, eliminate the measurement skew brought because environment atmospheric pressure is not equal to normal atmospheric pressure, accurately calculate the blood pressure of measurand in residing Altitude Regions, break away from the restriction that electric sphygmomanometer uses region height above sea level; Simultaneously, the present invention also possesses the function that height above sea level is measured, the height above sea level of measurand position can be shown over the display in real time, and can simulate measurand at normal atmospheric pressure blood pressure should interval range, avoid the hypertension mistaken diagnosis brought because of high altitude hypertension phenomenon.
Accompanying drawing explanation
The electric sphygmomanometer structured flowchart being applicable to any Altitude Regions that Fig. 1 provides for the embodiment of the present invention;
The cuff structural representation that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Please refer to shown in Fig. 1, the electric sphygmomanometer structured flowchart being applicable to any Altitude Regions that Fig. 1 provides for the embodiment of the present invention.
The electric sphygmomanometer being applicable to any Altitude Regions in the present embodiment specifically comprises: cuff 101, keyboard 102, air pump 103, gauge pressure transducer 104, absolute pressure sensor 105, microprocessor 106, display 107 and gas bleeder valve 108.
Described cuff 101 is connected with air pump 103 by airway 109, is fixed on the upper arm of measurand.As shown in Figure 2, cuff 101 structural representation that provides for the embodiment of the present invention of Fig. 2.Before starting measurement, need first cuff 101 to be correctly fixed on the upper arm of measurand.
Described keyboard 102 is connected with microprocessor 106, for inputting instruction to microprocessor 106, triggering and measuring action.Keyboard 102 is provided with the button of sending function instruction, presses after starting button, triggers microprocessor 106 is controlled air pump 103 to cuff 101 inflating pressure.
Described air pump 103 is connected with microprocessor 106, under controlling at microprocessor 106, to cuff 101 inflating pressure.
Described gauge pressure transducer 104 is connected with microprocessor 106, for gathering cuff dynamic pressure, and being converted into the signal of telecommunication and cuff dynamic pressure signal, exporting to microprocessor 106.
Microprocessor 106 None-identified analogue signal, so gauge pressure transducer 104 needs to be gathered after cuff dynamic pressure is converted to the signal of telecommunication and cuff dynamic pressure signal export to microprocessor 106 again.
Described absolute pressure sensor 105 is connected with microprocessor 106, for gathering the environment atmospheric pressure of Altitude Regions residing for measurand, and being converted into the signal of telecommunication and ambient atmosphere pressure force signal, exporting to microprocessor 106.
Described microprocessor 106 is connected with display 107, for utilizing described ambient atmosphere pressure force signal, described dynamic pressure signal is calibrated, extract pulse waveform characteristic quantity, calculate the blood pressure of measurand in residing Altitude Regions, export to display 107 and show.Described gas bleeder valve 108 is connected with cuff 101, after completing blood pressure measurement, bleeds off the pressure in cuff 101.
Microprocessor 106 is after the cuff dynamic pressure signal receiving gauge pressure transducer 104 output, be separated into the strict corresponding pulse wave fluctuation signal of sequential and cuff static pressure signal, and described cuff static pressure signal calibration is relative to the measured value under normal atmospheric pressure by the ambient atmosphere pressure force signal utilizing absolute pressure sensor 105 to export, extract pulse waveform characteristic quantity, calculate the blood pressure of measurand in residing Altitude Regions, export to display 107 and show.Wherein, the general principles utilizing absolute pressure sensor 105 calibration chart pressure sensor 104 to export is as follows: for gauge pressure transducer 104, it exports and meets: gauge pressure transducer output=absolute pressure-environment atmospheric pressure, so, gauge pressure transducer 104 can because environment atmospheric pressure change, cause, for same absolute pressure, exporting different measured values in different height above sea levels.And for absolute pressure sensor 105, it exports and meets: absolute pressure sensor output=absolute pressure-definitely zero-pressure, therefore, absolute pressure sensor 105 is adopted to gather the environment atmospheric pressure of Altitude Regions residing for measurand in the present invention, be converted into the signal of telecommunication and ambient atmosphere pressure force signal and export to microprocessor 106 and process, after microprocessor 106 receives this signal, the pressure value that gauge pressure transducer 104 exports can be calibrated to relative to the measurement numerical value under normal atmospheric pressure: pressure value=gauge pressure transducer output+absolute pressure sensor output-normal atmospheric pressure after correcting.Pressure data after overcorrect, eliminate the measurement skew brought because environment atmospheric pressure is not equal to normal atmospheric pressure, such pulse wave fluctuation signal strict corresponding according to sequential and cuff static pressure signal, just can draw the numerical value of the corresponding blood pressure of measurand and systolic pressure, diastolic pressure.
In addition, according to relevant medical statistical law, when entering highlands at the beginning of ordinary people, human body produces compensation response, and blood pressure raises can be obvious, and general height above sea level often raises 1000m, and human body systolic pressure raises 10mmHg to 20mmHg, and diastolic pressure raises 5mmHg to 10mmHg.Therefore, according to the environment atmospheric pressure number that absolute pressure sensor 105 gathers, microprocessor 106 can calculate the height above sea level of Altitude Regions residing for measurand, simultaneously, according to the rule of height above sea level and blood pressure, just can simulate the blood pressure that measurand is depressed in plains region and standard atmosphere, avoid the hypertension mistaken diagnosis brought because of high altitude hypertension phenomenon.
It should be noted that, the collection that the present invention uses gauge pressure transducer 104, the dual pressure sensor of absolute pressure sensor 105 carries out dynamic pressure in environment atmospheric pressure and cuff, but be not limited to this, single absolute pressure sensor 105 also can be used to complete collection to dynamic pressure signal in environment atmospheric pressure and cuff.
Technical scheme of the present invention utilizes absolute pressure sensor to gather the environment atmospheric pressure of Altitude Regions, place, this measurement result is used to calibrate gauge pressure transducer pressure measurements, eliminate the measurement skew brought because environment atmospheric pressure is not equal to normal atmospheric pressure, accurately calculate the blood pressure of measurand in residing Altitude Regions, break away from the restriction that electric sphygmomanometer uses region height above sea level; Simultaneously, the present invention also possesses the function that height above sea level is measured, the height above sea level of measurand position can be shown over the display in real time, and can simulate measurand at normal atmospheric pressure blood pressure should interval range, avoid the hypertension mistaken diagnosis brought because of high altitude hypertension phenomenon.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (3)
1. be applicable to an electric sphygmomanometer for any Altitude Regions, it is characterized in that, comprising: cuff, keyboard, air pump, gauge pressure transducer, absolute pressure sensor, microprocessor, display and gas bleeder valve;
Described cuff is connected with air pump by airway, is fixed on the upper arm of measurand;
Described keyboard is connected with microprocessor, for inputting instruction to microprocessor, triggering and measuring action;
Described air pump is connected with microprocessor, under micro-processor control, pressurizes to cuff inflation;
Described gauge pressure transducer is connected with microprocessor, for gathering cuff dynamic pressure, and being converted into the signal of telecommunication and cuff dynamic pressure signal, exporting to microprocessor;
Described absolute pressure sensor is connected with microprocessor, for gathering the environment atmospheric pressure of Altitude Regions residing for measurand, and being converted into the signal of telecommunication and ambient atmosphere pressure force signal, exporting to microprocessor;
Described microprocessor is connected with display, for utilizing described ambient atmosphere pressure force signal to calibrate described dynamic pressure signal, extracting pulse waveform characteristic quantity, calculating the blood pressure of measurand in residing Altitude Regions, exports to display display; Wherein, described microprocessor specifically for: described cuff dynamic pressure signal is separated into pulse wave fluctuation signal corresponding to sequential and cuff static pressure signal, and utilize described ambient atmosphere pressure force signal to be relative to the measured value under normal atmospheric pressure by described cuff static pressure signal calibration, extract pulse waveform characteristic quantity, calculate the blood pressure of measurand in residing Altitude Regions, export to display display;
Described gas bleeder valve is connected with cuff, after completing blood pressure measurement, bleeds off the pressure in cuff.
2. the electric sphygmomanometer being applicable to any Altitude Regions according to claim 1, is characterized in that, described microprocessor also for:
The height above sea level of Altitude Regions residing for measurand is calculated according to described ambient atmosphere pressure force signal.
3. the electric sphygmomanometer being applicable to any Altitude Regions according to claim 2, is characterized in that, described microprocessor is further used for:
According to the blood pressure of the measurand calculated in residing Altitude Regions and height above sea level, simulate the blood pressure of measurand in plains region and standard atmosphere pressure.
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| CN201410184318.XA CN103932691B (en) | 2014-05-04 | 2014-05-04 | A kind of electric sphygmomanometer being applicable to any Altitude Regions |
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| CN201410184318.XA CN103932691B (en) | 2014-05-04 | 2014-05-04 | A kind of electric sphygmomanometer being applicable to any Altitude Regions |
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| EP3136071B1 (en) * | 2015-08-25 | 2018-03-28 | The Swatch Group Research and Development Ltd. | Device and method for calibrating a device for measuring altitude |
| CN106880347A (en) * | 2017-03-08 | 2017-06-23 | 深圳瑞光康泰科技有限公司 | Multi-parameter blood pressure measuring device |
| CN107456221A (en) * | 2017-09-01 | 2017-12-12 | 上海斐讯数据通信技术有限公司 | Method, sphygmomanometer and the system of blood pressure can be accurately measured |
| CN115670411A (en) * | 2021-07-30 | 2023-02-03 | 华为技术有限公司 | Blood pressure measuring equipment |
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| US6024704A (en) * | 1998-04-30 | 2000-02-15 | Medtronic, Inc | Implantable medical device for sensing absolute blood pressure and barometric pressure |
| DE102005050422A1 (en) * | 2005-10-19 | 2007-04-26 | Robert Bosch Gmbh | Non invasive blood pressure sensor has sleeve applying external pressure with adjacent absolute and relative pressure sensors |
| CN101216334A (en) * | 2008-01-02 | 2008-07-09 | 湖南九天科技有限公司 | Multifunctional atmospheric pressure altitude instrument |
| CN102397065A (en) * | 2010-09-15 | 2012-04-04 | 王晓宏 | High-precision electronic blood pressure detector |
| CN203280377U (en) * | 2013-05-22 | 2013-11-13 | 广州德米医用设备有限公司 | Medical electrical sphygmomanometer |
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