CN102202567A - Error detection method and apparatus of electronicsphygmomanometer and electronicsphygmomanometer - Google Patents
Error detection method and apparatus of electronicsphygmomanometer and electronicsphygmomanometer Download PDFInfo
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- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
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Abstract
An error detection method and an apparatus of an electronicsphygmomanometer and the electronicsphygmomanometer, correspondently comprise sending an air pressure value measured at the current moment when a cuff air pressure of the electronicsphygmomanometer reaches the predetermined characteristics air pressure value; comparing the received air pressure value measured at the current moment corresponding to the stored characteristics air pressure value with the actually measured value to obtain measuring error percentage of the electronicsphygmomanometer. The method and apparatus of the invention, through comparing the measured value corresponding to the characteristics air pressure value with the stored actually measured value, obtain the measuring error of the electronicsphygmomanometer and detect the electronicsphygmomanometer error under the condition of not increasing a pressure sensor and the operating staff do not need to possess the corresponding medical knowledge. The method and the apparatus have the characteristics of accurate and rapid error detection.
Description
Technical field
The present invention relates to a kind of error detection method, device and electric sphygmomanometer of electric sphygmomanometer, belong to the armarium technical field.
Background technology
Human blood-pressure is human in healthy degree, and especially the very important reference index for the treatment of cardiac and cerebral vascular diseases be the important evidence that the medical personnel diagnoses, and sphygomanometer is the important medical detecting Instrument that medical institutions and family all can use.Therefore, the high sphygomanometer of precision can diagnosis provide very important help for the medical work personnel make accurately, also can provide basis for estimation accurately for the variation that the gauger understands self of physical condition every day.
At present, the measurement overwhelming majority of blood pressure adopts cuff attached to the method on the arm arteries, in the process of cuff deflation, judge the sampled point of systolic pressure and diastolic pressure by monitoring sleeve change procedure with pressure or the dancing sound of artery, thereby learn pressure value, main measuring method is divided into Ke Shi sound method and oscillographic method.Existing electric sphygmomanometer mainly adopts oscillographic method to measure blood pressure, its principle is to adopt pneumatic sleeve to block the upper arm artery blood flow, because the effect of Hemodynamics on Pathogenesis of heartbeat, will the overlapping and synchronous pressure oscillation of heartbeat on gas sleeve pressure, it is pulse wave, and come the estimated blood pressure value according to the relation between pulse wave amplitude and the gas sleeve pressure, but electric sphygmomanometer must periodic check and is calibrated and could provide foundation accurately for user.
The error-detecting of existing electric sphygmomanometer mainly comprises two pressure transducers of employing and is undertaken by the method for artificial auscultation.When adopting two pressure transducers, wherein first is used as daily measurement, second error-detecting that is used for daily measuring transducer, reduce wearing and tearing by the access times that reduce second pick off, to improve the error-detecting accuracy of blood pressure measurement, but this method has not only improved the manufacturing cost of electric sphygmomanometer, and causes waste because of device resource is idle for a long time; If method by artificial auscultation, then need to monitor the variation of pulse wave by stethoscope, judge the parameter identification point according to Ke Shi sound method, therefore needing certain empirical medical personnel just can carry out, because different people judges different to the Ke Shi sound, can introduce new personal error, and if the own error of the pressure transducer of electric sphygmomanometer when being linearity error more greatly and not, cause the effect of this error detection method relatively poor.
Summary of the invention
Embodiments of the invention provide a kind of error detection method, device and electric sphygmomanometer of electric sphygmomanometer, can the error to electric sphygmomanometer detect under the situation of increase pressure pick off not, have error detection characteristics accurately and rapidly.
Embodiments of the invention provide a kind of error detection method of electric sphygmomanometer, comprising:
When the cuff air pressure of described electric sphygmomanometer reaches predetermined feature atmospheric pressure value, send the atmospheric pressure value that current time is measured;
The atmospheric pressure value that the current time that receives is measured and the feature atmospheric pressure value of storage and the corresponding relation of actual measured value compare, and obtain the measurement error rate of described electric sphygmomanometer.
Embodiments of the invention provide a kind of error detecting apparatus of electric sphygmomanometer, comprising:
The Characteristic pressures sensing module when being used for cuff air pressure when described electric sphygmomanometer and reaching predetermined feature atmospheric pressure value, sends atmospheric pressure value that current time measures to error calculating module;
Error calculating module is used for the atmospheric pressure value that the described current time that the Characteristic pressures sensing module sends is measured and the feature atmospheric pressure value of storage and the corresponding relation of actual measured value and compares, and obtains the measurement error rate of described electric sphygmomanometer.
A kind of electric sphygmomanometer comprises measuring unit and alignment unit, and described measuring unit comprises:
Barometric surveying module, the measuring command that is used for sending according to alignment unit are measured the atmospheric pressure value of the described electric sphygmomanometer measurement of current time, and described atmospheric pressure value is sent to alignment unit;
Calibration module is used for the measurement error rate according to the alignment unit transmission, and the atmospheric pressure value that described electric sphygmomanometer is measured is calibrated;
Described alignment unit comprises:
The measuring command sending module when being used for cuff air pressure when described electric sphygmomanometer and reaching predetermined feature atmospheric pressure value, sends measuring command to measuring unit;
The calibration parameter generation module is used for comparing with the atmospheric pressure value that described electric sphygmomanometer is measured according to the actual measured value of predetermined feature atmospheric pressure value correspondence, calculates the measurement error rate of electron gain sphygomanometer, and affiliated measurement error rate is sent to measuring unit.
The technical scheme that is provided by the embodiment of the invention described above as can be seen, by the measured value of feature atmospheric pressure value correspondence and the actual measured value of storage are compared, thereby the measurement error of electron gain sphygomanometer, can under the situation of increase pressure pick off not, the error to electric sphygmomanometer detect, have error detection characteristics accurately and rapidly.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the error detection method of the electric sphygmomanometer that Fig. 1 provides for embodiments of the invention;
Other values of feature that Fig. 2 provides for embodiments of the invention and the corresponding relation sketch map of actual measured value;
The schematic flow sheet of the error detection method of the electric sphygmomanometer that comprises calibration process that Fig. 3 provides for embodiments of the invention;
The structural representation of the error detecting apparatus of the electric sphygmomanometer that Fig. 4 provides for embodiments of the invention;
The structural representation of the error detecting apparatus of the electric sphygmomanometer that comprises calibration calculations module and display module that Fig. 5 provides for embodiments of the invention;
The structural representation of the electric sphygmomanometer that Fig. 6 provides for embodiments of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiments of the invention provide a kind of error detection method of electric sphygmomanometer, comprise when cuff air pressure when electric sphygmomanometer reaches predetermined feature atmospheric pressure value, send the atmospheric pressure value that current time is measured; The atmospheric pressure value that the current time that receives is measured and the feature atmospheric pressure value of storage and the corresponding relation of actual measured value compare the measurement error rate of electron gain sphygomanometer.This method can be applicable in existing various types of electric sphygmomanometer, and its principle is by the measured value of feature atmospheric pressure value correspondence and the actual measured value of storage are compared, thus the measurement error of electron gain sphygomanometer.Below in conjunction with Figure of description present embodiment is specified, as shown in Figure 1, this method comprises:
Concrete, when beginning that electric sphygmomanometer carried out error-detecting, at first empty the parameter memory space of this electric sphygmomanometer, then with the trachea of the Characteristic pressures pick off of this electric sphygmomanometer and the measurement gas space UNICOM of air pump.The testing staff is with cuff, and this electric sphygmomanometer air pump is inflated the high-voltage value (for example 200mmHg) of enough follow-up measurements.In deflation course, when the Characteristic pressures sensor when cuff air pressure (being the atmospheric pressure value of gas in the cuff inner space) reaches some feature atmospheric pressure value of setting, the measuring unit of Characteristic pressures pick off notice electric sphygmomanometer.Measuring unit sends the atmospheric pressure value that current time reads.
Concrete, the calibration parameter memory space has write down the corresponding relation of feature atmospheric pressure value and actual measured value, corresponding corresponding relation as shown in Figure 2, feature atmospheric pressure value wherein is meant when electric sphygmomanometer is worked under measurement pattern, find corresponding point on the axle with the actual measured value of contraction pressing diastolic pressure in above coordinate system that record, be mapped to the last value corresponding of axle of feature atmospheric pressure value then according to the coordinate axes curve, this numerical value is used for actual measured value is calibrated the true measurement result of back electron gain sphygomanometer.In follow-up deflation course, repeating step 11 and step 12 write down all detected feature atmospheric pressure values and corresponding actual measured value thereof, and perceived and record is finished up to the minimal characteristic atmospheric pressure value.
Atmospheric pressure value with the current time that receives is measured compares the measurement error rate of electron gain sphygomanometer with the feature atmospheric pressure value of storage and the corresponding relation of actual measured value.The algorithm of corresponding measurement error rate can be: according to the corresponding relation in the calibration parameter memory module, calculate the error amount at each feature atmospheric pressure value place.Suppose that the feature atmospheric pressure value that the X point sets is Xp, the actual measured value of this feature atmospheric pressure value correspondence is Xt, and then measurement error rate herein is:
Ex＝|(Xt-Xp)/Xp|×100％
The measurement error rate of electric sphygmomanometer is got the maximum of the error rate at all feature atmospheric pressure value places.
Optionally, the measurement error rate of calculating the electric sphygmomanometer that obtains can also be outputed on the display screen, measurement result and measurement error rate are compared, obtain measurement result accurately more intuitively for the user.
Further, because the calibration process more complicated of existing electric sphygmomanometer, the technological know-how that needs specialty again, and the existing error checkout equipment also only can carry out error-detecting to electric sphygmomanometer, can't realize calibration, therefore embodiments of the invention can also further be calibrated this electric sphygmomanometer after electric sphygmomanometer is carried out error-detecting, i.e. the atmospheric pressure value of measuring according to the current time after the measurement error rate acquisition calibration of electric sphygmomanometer.Idiographic flow as shown in Figure 3, this Calibration Method can comprise:
Wherein, the implementation procedure of step 31-32 and middle step 11-12 embodiment illustrated in fig. 1 are similar, repeat no more here.
Concrete, after the measurement error rate of electron gain sphygomanometer, the atmospheric pressure value that current time is measured multiply by this measurement error rate, the atmospheric pressure value that current time after obtaining to calibrate is measured, and the atmospheric pressure value that the current time after this calibration is measured can be presented on the display screen of electric sphygmomanometer, read intuitively for the user.
In the measuring process of reality, because each measurement all needs to measure systolic pressure and diastolic pressure (being high pressure and low pressure), systolic pressure and the diastolic pressure that records can be found corresponding point on the axle with the actual measured value in the coordinate system shown in Figure 2, the axle that is mapped to the feature atmospheric pressure value according to coordinate curve is gone up value corresponding then, and the value after this mapping is the final measurement of measured value after through calibration.
Adopt the technical scheme of present embodiment, by the measured value of feature atmospheric pressure value correspondence and the actual measured value of storage are compared, thereby the measurement error of electron gain sphygomanometer, can under the situation of increase pressure pick off not, the error to electric sphygmomanometer detect and calibrate, simultaneously do not require that also operator possess corresponding medical knowledge, error detection and correction have characteristics accurately and rapidly.
Embodiments of the invention also provide a kind of error detecting apparatus of electric sphygmomanometer, as shown in Figure 4, comprise Characteristic pressures sensing module 41 and error calculating module 42, wherein: when Characteristic pressures sensing module 41 is used for cuff air pressure when electric sphygmomanometer and reaches predetermined feature atmospheric pressure value, send atmospheric pressure value that current time measures to error calculating module 42; The atmospheric pressure value that the current time that error calculating module 42 is used for that Characteristic pressures sensing module 41 is sent is measured and the feature atmospheric pressure value of storage and the corresponding relation of actual measured value compare the measurement error rate of electron gain sphygomanometer.
Optionally, as shown in Figure 5, this device can also comprise calibration calculations module 43 and display module 44, and calibration calculations module 43 is used for the atmospheric pressure value according to the current time measurement after the measurement error rate acquisition calibration of electric sphygmomanometer; The atmospheric pressure value output that display module 44 is used for the current time after the measurement error rate of electric sphygmomanometer or the calibration is measured shows.
Optionally, in error calculating module 42, can comprise the error rate calculating sub module, the atmospheric pressure value actual measured value corresponding with predetermined feature atmospheric pressure value that is used for current time is measured made difference, again difference and predetermined feature atmospheric pressure value are made ratio, with the numerical value of ratio maximum measurement error rate as electric sphygmomanometer.
Adopt the technical scheme of present embodiment, by the measured value of feature atmospheric pressure value correspondence and the actual measured value of storage are compared, thereby the measurement error of electron gain sphygomanometer, can under the situation of increase pressure pick off not, the error to electric sphygmomanometer detect and calibrate, simultaneously do not require that also operator possess corresponding medical knowledge, error detection and correction have characteristics accurately and rapidly.
The specific embodiment of the processing capacity of each module that comprises in the error detecting apparatus of above-mentioned electric sphygmomanometer is described in method embodiment before, no longer is repeated in this description at this.
Embodiments of the invention also provide a kind of electric sphygmomanometer, as shown in Figure 6, this system has comprised measuring unit 61 and alignment unit 62, corresponding measuring unit comprises barometric surveying module 611 and calibration module 612, corresponding alignment unit comprises measuring command sending module 621 and calibration parameter generation module 622, barometric surveying module 611 is used for measuring according to the measuring command that alignment unit 62 sends the atmospheric pressure value of the electric sphygmomanometer measurement of current time, and atmospheric pressure value is sent to alignment unit 62; Calibration module 612 is used for the measurement error rate according to alignment unit 62 transmissions, and the atmospheric pressure value that electric sphygmomanometer is measured is calibrated; When measuring command sending module 621 is used for cuff air pressure when electric sphygmomanometer and reaches predetermined feature atmospheric pressure value, send measuring command to measuring unit 61; Calibration parameter generation module 622 is used for comparing with the atmospheric pressure value that electric sphygmomanometer is measured according to the actual measured value of predetermined feature atmospheric pressure value correspondence, calculates the measurement error rate of electron gain sphygomanometer, and affiliated measurement error rate is sent to measuring unit 61.
Optionally, in measuring unit 61, also comprise display module, be used for the atmospheric pressure value output that the measurement error rate or the current time after the calibration of electric sphygmomanometer are measured is shown.
Optionally, in calibration parameter generation module 622, also comprise the error rate calculating sub module, the atmospheric pressure value actual measured value corresponding with predetermined feature atmospheric pressure value that is used for current time is measured made difference, again difference and predetermined feature atmospheric pressure value are made ratio, with the numerical value of ratio maximum measurement error rate as electric sphygmomanometer.
Electric sphygmomanometer in the present embodiment also needs to possess except the measurement function that possesses electric sphygmomanometer at present commonly used: receive the instruction of calibration instrument, and measure the atmospheric pressure value of current time immediately, and send atmospheric pressure value to calibration instrument by data wire; Receive and store the calibration parameter of calibration instrument feedback.Calibration parameter comprises the corresponding relation of a stack features atmospheric pressure value and actual measured value; According to calibration parameter, for demonstration is calibrated and exported to the measurement result of later electric sphygmomanometer.
The calibration instrument that present embodiment provides need comprise following function: can the Perception Features atmospheric pressure value, corresponding feature atmospheric pressure value be that calibration instrument configures in process of production or calibration before calibration personnel set up on their own; In the process of electric sphygmomanometer venting, when calibration instrument perceives predefined certain feature atmospheric pressure value, calibration instrument sends instruction by data wire to electric sphygmomanometer, and electric sphygmomanometer sends to calibration instrument to current self built-in pressure sensor readings value immediately; Calibration instrument is calculated error rate according to all feature atmospheric pressure values and the actual measured value corresponding with the feature atmospheric pressure value, and the corresponding relation and the error rate of this stack features atmospheric pressure value and actual measured value is sent to electric sphygmomanometer.
The electric sphygmomanometer that present embodiment provides adopts to be measured and the isolating method of calibration, and electric sphygmomanometer and calibration instrument is independent.Independently calibration instrument and electronic blood pressure are in respect of two connecting lines: data wire and trachea.Wherein, data transmission channel comprises that the force value in a certain moment of electric sphygmomanometer sends calibration instrument to, and calibration instrument is sent to electric sphygmomanometer with calibration result, and data transmission channel can be a data wire in kind of supporting variety of protocol and interface, can be wireless connections also, such as bluetooth; Trachea comprises the gas pipeline in the air pressure storehouse of the air pressure storehouse that is used for connecting electric sphygmomanometer and calibration instrument, makes the air pressure storehouse of electric sphygmomanometer have identical force value with the air pressure storehouse of calibration instrument in the identical moment.
Concrete calibration process comprises: electric sphygmomanometer is linked to each other with calibrator (-ter) unit, comprise being connected of data transmission channel and trachea, empty the calibration parameter memory space then, electric sphygmomanometer enters calibration mode, cuff on the calibration personnel band, start calibration instrument, start the calibration process of electric sphygmomanometer, the sphygomanometer air pump is inflated the high-voltage value (for example 200mmHg) of enough follow-up measurements, in deflation course, when the Characteristic pressures sensor senses when air pressure reaches some eigenvalues of setting, the Characteristic pressures pick off sends to barometric surveying module 611 measuring unit 61 with measuring command from data transmission path by measuring command sending module 621, and barometric surveying module 611 sends the atmospheric pressure value that reads to the calibration parameter generation module 622 of alignment unit 62; Because the calibration parameter spatial cache has write down the actual measured value of each feature atmospheric pressure value correspondence, calibration parameter generation module 622 is compared with the atmospheric pressure value that electric sphygmomanometer is measured according to the actual measured value of predetermined feature atmospheric pressure value correspondence, calculate the measurement error rate of electron gain sphygomanometer, and affiliated measurement error rate is sent to the calibration module 612 of measuring unit 61; Calibration module 612 is calibrated the atmospheric pressure value that electric sphygmomanometer is measured according to the measurement error rate that calibration parameter generation module 622 sends; In follow-up deflation course, repeat the atmospheric pressure value that feature atmospheric pressure value measuring unit 61 is measured is measured, write down all detected feature atmospheric pressure values and corresponding actual measured value thereof, perceived and record is finished up to the minimal characteristic atmospheric pressure value; Calibration parameter generation module 622 is calculated the electric sphygmomanometer error according to above-mentioned error calculation method, and the calibration parameter in the related calibration parameter spatial cache of error amount is sent on the calibration module 612 of measuring unit 61; Electric sphygmomanometer is kept at calibration result in the calibration parameter memory space, and shows the calibration error value on display screen; Calibration finishes, and calibration personnel is taken off cuff, and the disconnection electric sphygmomanometer is connected with calibration instrument.
Adopt the technical scheme of present embodiment, by the measured value of feature atmospheric pressure value correspondence and the actual measured value of storage are compared, thereby the measurement error of electron gain sphygomanometer, can under the situation of increase pressure pick off not, the error to electric sphygmomanometer detect and calibrate, simultaneously do not require that also operator possess corresponding medical knowledge, error detection and correction have characteristics accurately and rapidly.
It should be noted that in said apparatus and system embodiment each included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize function corresponding; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. the error detection method of an electric sphygmomanometer is characterized in that, comprising:
When the cuff air pressure of described electric sphygmomanometer reaches predetermined feature atmospheric pressure value, send the atmospheric pressure value that current time is measured;
The atmospheric pressure value that the current time that receives is measured and the feature atmospheric pressure value of storage and the corresponding relation of actual measured value compare, and obtain the measurement error rate of described electric sphygmomanometer.
2. method according to claim 1 is characterized in that, after the measurement error rate that obtains described electric sphygmomanometer, this method also comprises:
Atmospheric pressure value according to the current time measurement after the measurement error rate acquisition calibration of described electric sphygmomanometer.
3. method according to claim 1 and 2 is characterized in that, the measurement error of described electron gain sphygomanometer comprises:
The actual measured value that the atmospheric pressure value that current time is measured is corresponding with predetermined feature atmospheric pressure value is made difference, more described difference and the feature atmospheric pressure value of being scheduled to is made ratio, with the numerical value of the described ratio maximum measurement error rate as described electric sphygmomanometer.
4. the error detecting apparatus of an electric sphygmomanometer is characterized in that, comprising:
The Characteristic pressures sensing module when being used for cuff air pressure when described electric sphygmomanometer and reaching predetermined feature atmospheric pressure value, sends atmospheric pressure value that current time measures to error calculating module;
Error calculating module is used for the atmospheric pressure value that the described current time that the Characteristic pressures sensing module sends is measured and the feature atmospheric pressure value of storage and the corresponding relation of actual measured value and compares, and obtains the measurement error rate of described electric sphygmomanometer.
5. device according to claim 4 is characterized in that, this device also comprises:
The calibration calculations module is used for the atmospheric pressure value of measuring according to the current time after the measurement error rate acquisition calibration of described electric sphygmomanometer.
6. device according to claim 5 is characterized in that, this device also comprises:
Display module is used for the atmospheric pressure value output that the measurement error rate or the current time after the calibration of described electric sphygmomanometer are measured is shown.
7. according to any described device of claim 4 to 6, it is characterized in that, in error calculating module, comprise:
The error rate calculating sub module, the atmospheric pressure value actual measured value corresponding with predetermined feature atmospheric pressure value that is used for current time is measured made difference, again described difference and predetermined feature atmospheric pressure value are made ratio, with the numerical value of described ratio maximum measurement error rate as described electric sphygmomanometer.
8. an electric sphygmomanometer is characterized in that, comprises measuring unit and alignment unit, and described measuring unit comprises:
Barometric surveying module, the measuring command that is used for sending according to alignment unit are measured the atmospheric pressure value of the described electric sphygmomanometer measurement of current time, and described atmospheric pressure value is sent to alignment unit;
Calibration module is used for the measurement error rate according to the alignment unit transmission, and the atmospheric pressure value that described electric sphygmomanometer is measured is calibrated;
Described alignment unit comprises:
The measuring command sending module when being used for cuff air pressure when described electric sphygmomanometer and reaching predetermined feature atmospheric pressure value, sends measuring command to measuring unit;
The calibration parameter generation module is used for comparing with the atmospheric pressure value that described electric sphygmomanometer is measured according to the actual measured value of predetermined feature atmospheric pressure value correspondence, calculates the measurement error rate of electron gain sphygomanometer, and affiliated measurement error rate is sent to measuring unit.
9. electronics barometer according to claim 8 is characterized in that, described measuring unit also comprises:
Display module is used for the atmospheric pressure value output that the measurement error rate or the current time after the calibration of described electric sphygmomanometer are measured is shown.
10. according to Claim 8 or 9 described electronics barometers, it is characterized in that, in the calibration parameter generation module, comprise:
The error rate calculating sub module, the atmospheric pressure value actual measured value corresponding with predetermined feature atmospheric pressure value that is used for current time is measured made difference, again described difference and predetermined feature atmospheric pressure value are made ratio, with the numerical value of described ratio maximum measurement error rate as described electric sphygmomanometer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/073522 WO2011137732A2 (en) | 2011-04-29 | 2011-04-29 | Electronic blood pressure meter and error detection method and device thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011137732A2 (en) | 2011-11-10 |
| WO2011137732A3 (en) | 2012-04-05 |
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