CN101176662A - Method for measuring heart rate - Google Patents
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- CN101176662A CN101176662A CNA2006101484568A CN200610148456A CN101176662A CN 101176662 A CN101176662 A CN 101176662A CN A2006101484568 A CNA2006101484568 A CN A2006101484568A CN 200610148456 A CN200610148456 A CN 200610148456A CN 101176662 A CN101176662 A CN 101176662A
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Abstract
The invention relates to a heart rate measuring method, comprising the following steps: fistly, utilizing a heart rate detector to collect the signals during a predetermined signal acquisition period; secondly, calculating the interval time between arbitrary two signals; thirdly, calculating the heart rate value by the reciprocal of the interval time; fourthly, voting the calculated heart rate values according to the steps into a plurality of voting boxes represented different heart rate ranges respectively; fifthly, finding out the voting box with the most tickets; lastly, calculating the heart rate. The invention has the advantages of filtering noise and finding out true pulse signal, and obtaining the accurate heart rate value through the minority voting process of heart rate measuring method.
Description
Technical field
The present invention is about a kind of method for measuring heart rate, especially about a kind of high-reliability method for measuring heart rate.
Background technology
Heart rate is an important parameter of health, no matter the heart rate when being when motion or rest all has important health pointer meaning.For example, have research to point out, abnormal motion heart rate and abnormal heart rate answer speed are the predictor of risk of sudden death, and wherein, low excessively motion heart rate has the highest risk of dying suddenly index; And the rest heart rate is high more, or the heart rate answer of motion back is slow more, and hazard index is also high more.
The method of measuring heart rate the best is to carry out electrocardiogram (ECG) to measure, and utilizes Electrocardiographic R-R interval (R-R interval) to calculate heart rate again.But it is too high and too bothersome and infeasible to utilize electrocardiogram to measure the heart rate cost.Developed on the market at present and multiple heart rate monitor, the heart rate when can be used to monitor motion.Heart rate monitor comprises two parts at least, is respectively a pulse sensing unit and a heart rate display unit, and wherein this pulse sensing unit comprises an electrode (or pick off (transducer)) and a filter circuit.Yet compared to the electrocardiogram technology, the pulse induction technology is easier to be subjected to the interference of anthropic factor.
In order accurately to respond to pulse signal, the electrode of heart rate monitor must be highly stable with contacting of skin, and this often depends on the occupation mode of user, yet during the heart rate when measuring motion, the vibrations of pulse sensing unit are easy to cause generating noise.
Commercially available sensing unit comprises a series of assembly and responds to pulse, as band filter (bandpass filter), peak detector (peak detector) and radio circuit (Radio Frequency Circuit) etc.Because it lacks accurate signal processing, makes the heart rate computing unit noise of receiving may be considered as pulse signal, therefore, these not the noise of filtering can cause the heart rate display unit to demonstrate wrong heart rate value.
Summary of the invention
In view of the above problems, the present invention is proposed.
Main purpose of the present invention is to provide a kind of method for measuring heart rate, and it utilizes the majority rule voting process to come filtering noise, to draw heart rate value accurately.
For achieving the above object, of the present invention one than broad sense embodiment for a kind of method for measuring heart rate is provided, comprise the following step: (a) utilize a heart rate monitor during a prearranged signal is gathered in acquired signal; (b) calculate blanking time between any two these signals; (c) inverse with this blanking time calculates heart rate value; (d) this heart rate value that abovementioned steps is calculated is voted, and drops into respectively in the ballot box of the different heart rate ranges of representative; (e) find out the highest ballot box of number of votes obtained; And (f) calculate heart rate.
The above-mentioned scheme according to the present invention wherein is preferably 2 to 8 seconds during this signals collecting.
The above-mentioned scheme according to the present invention, wherein the signal that is collected in step (a) comprises pulse signal and noise signal.
The above-mentioned scheme according to the present invention, wherein step (b) comprises the blanking time between last signal that calculates during this signal and the last signals collecting.
The above-mentioned scheme according to the present invention is wherein only voted at the heart rate value in reasonable heart rate range in step (d), and the heart rate value in reasonable heart rate range is not then voted.And rationally heart rate range is 50-240.
In one embodiment, wherein the heart rate range of this ballot box is divided into a plurality of intervals with rational R-R interval and is converted into heart rate range and gets, and this rational R-R interval is 0.25-1.2 second.
In another embodiment, wherein the heart rate range of this ballot box with reasonable heart rate range with etc. increment rate be distinguished into a plurality of intervals and get.
The above-mentioned scheme according to the present invention, wherein the ballot box that the number of votes obtained of being found out in step (e) is the highest is a single ballot box or is two the highest adjacent ballot boxes of number of votes obtained after the poll addition.
The above-mentioned scheme according to the present invention wherein in step (e), if can't find out the highest ballot box of number of votes obtained, then adds up poll during next signals collecting, and repeating step (a)-(d) is to find out the highest ballot box of number of votes obtained.
The above-mentioned scheme according to the present invention, wherein step (f) is calculated the meansigma methods of this heart rate value that drops into the highest ballot box of this number of votes obtained and is drawn this heart rate.
Another broad sense embodiment of the present invention comprises the following step for a kind of method for measuring heart rate is provided: (a) utilize a heart rate monitor during a prearranged signal is gathered in acquired signal; (b) calculate blanking time between any two these signals; (c) vote for this blanking time that abovementioned steps is calculated, and drops into respectively and represent in the ballot box of different intervals scope; (d) find out the highest ballot box of number of votes obtained; And (e) calculate heart rate.
The above-mentioned scheme according to the present invention, wherein in step (c) only at voting the blanking time in reasonable R-R interval, then do not vote the blanking time in rational R-R interval.This rational R-R interval is 0.25-1.2 second, and scope system blanking time of this ballot box is divided into a plurality of intervals with rational R-R interval and gets.
The above-mentioned scheme according to the present invention, wherein step (e) calculates heart rate value with the inverse of this blanking time of dropping into the highest ballot box of this number of votes obtained, and calculates the meansigma methods of this heart rate value and draw this heart rate.
Description of drawings
Fig. 1 is a signals collecting sketch map of the present invention.
Fig. 2 shows respectively algorithm and three heart rate when leading the measured rest of electrocardiogram of voting with the present invention.
Fig. 3 demonstration is voted with the present invention respectively and is replied heart rate after algorithm and three is led the measured motion of electrocardiogram.
Fig. 4 shows respectively with the present invention's algorithm and 12 of voting and leads the measured exercise heart rate of electrocardiogram.
The specific embodiment
Some exemplary embodiments that embody feature of the present invention and advantage will be described in detail in the explanation of back segment.Be understood that the present invention can have various variations on different embodiment, its neither departing from the scope of the present invention, and explanation wherein and the accompanying drawing usefulness that ought explain in itself, but not in order to restriction the present invention.
Because existing heart rate monitor is because can't filtering noise, and the easy heart rate value that must make mistake, the present invention proposes a kind of high-reliability method for measuring heart rate, and it utilizes the majority rule voting process to rebuild the R-R interval, to draw heart rate value accurately.
Though pulse and noise can't make a distinction in some cases, their performances on origination interval are inequality, and for example in a short time, the variation in R-R interval is very limited, and noise is then denied; Change sentence and change, the R-R interval is than the tool systematicness, and the noise origination interval is then more irregular.Therefore, according to this species diversity, the present invention proposes a kind of ballot algorithm and accurately calculates heart rate.Below will further specify ballot algorithm of the present invention.
At first, the present invention is to carry out by a microprocessor in order to the ballot algorithm of measuring heart rate, and this microprocessor system organizes by general commercially available heart rate monitor cover and carries out signal detection.This heart rate monitor comprises pectoral girdle, wrist display unit and receiving element, and wherein this receiving element is connected to this microprocessor.
See also Fig. 1, it is a signals collecting sketch map of the present invention.As shown in Figure 1, t
1, t
2..., t
n(Signal Collecting Period SCP) receives signal S during being illustrated respectively in prearranged signal collection
1, S
2..., S
nTime point, this signal comprises pulse signal (being equivalent to heartbeat signal) and noise signal, wherein solid line is a pulse signal, dotted line then is a noise signal.In addition, t
0Be last the signal S that is received before the beginning during this signals collecting
0, that is last signal of being received during the last signals collecting.Because the intervention of noise, the R-R interval is cut into several fragments by one or more noises, therefore can't directly utilize these signal spacings to rebuild the R-R interval, so must further calculate the blanking time between wantonly two signals, find out real pulse signal, and then draw the heart rate value behind the filtering noise.
With Fig. 1 is example, collects at t altogether during signals collecting
1, t
2, t
3, t
4, t
5Signal S Deng five time points appearance
1, S
2, S
3, S
4, S
5, the blanking time of calculating wantonly two signals respectively, comprising:
And with blanking time inverse calculate heart rate, to to the heart rate range ballot box of representing the different intervals scope, (for example reasonable R-R interval (0.25 second-1.2 seconds) be divided into a plurality of interval ranges between the heart rate digital polling in the reasonable heart rate range (50-240) again, calculate the heart rate range of described interval representative again), also or with etc. increment rate distinguish the heart rate range ballot box of reasonable heart rate range (for example with increment rate 10%, the heart rate range of ballot box is respectively [50-55], [56-62], [63-69], [70-77] ..., the rest may be inferred), but not the heart rate numeral in reasonable heart rate range is not then voted.When finishing during the signals collecting to be taken a sample, the close examination voting results are found out the highest ballot box of number of votes obtained, and assert that the highest ballot box of number of votes obtained is real heart rate and drops into, and the signal that produces these hearts rate has promptly comprised real pulse.Yet, if real heart rate is when the border of ballot box heart rate range, may cause adjacent ballot box draw in votes and not have the highest single poll ballot box, for avoiding this situation, in a preferred embodiment, with the addition of two adjacent ballot box polls, find out two the highest adjacent ballot boxes of number of votes obtained, and the heart rate value that drops into these two adjacent ballot boxes is real heart rate, and therefore desirable its average computation goes out heart rate.
And in some cases, for example noise is too many or when having pulse signal not to be detected, and may cause finding out two the highest adjacent ballot boxes of number of votes obtained in can't be during single signals collecting.If adjacent two ballot boxes can't produce the highest ticket, then with the S of last signal during as next signals collecting
0, and the accumulative total poll is found out two the highest adjacent ballot boxes of number of votes obtained during next signals collecting.
As previously mentioned, compared to the blanking time of noise, the variation in R-R interval is comparatively limited, so the heart rate digital polling that the highest two the adjacent ballot boxes of poll may be calculated by real R-R interval and getting.Therefore,, find out real pulse signal, can calculate heart rate exactly in the majority rule mode by the calculating and the voting process of wantonly two signal intervals.
Be preferably during the above-mentioned signals collecting between 2 to 8 seconds, and short more during this signals collecting, resolution will be high more.And the polling hours can be when whenever receiving a signal, promptly calculate the blanking time of it and front signal, and vote, or vote again can during signals collecting, finish the time.
According to another embodiment of the present invention, in above-mentioned voting process, except voting with heart rate range, scope blanking time that certainly can also signal is voted.In this embodiment, to vote to the ballot box of different intervals scope between the blanking time in reasonable R-R interval (0.25 second-1.2 seconds), for example be divided in 0.25 second-1.2 seconds 30 blanking time scope ballot box vote, and find out two the highest adjacent ballot boxes of number of votes obtained, can corresponding find out real pulse signal.Similarly, calculate heart rate value, and the meansigma methods of calculating this heart rate value can draw heart rate with the inverse of blanking time of dropping into these two adjacent ballot boxes.
To illustrate that below using the present invention's algorithm of voting calculates an example of heart rate.In this example, be decided to be 4 seconds during the signals collecting, and during this signals collecting, receive 13 signals altogether, be respectively S
1, S
2..., S
13, and last signal during the last signals collecting is S
0
Step 1: calculate the blanking time between signal:
Following table first ranks go out S
0To S
1(0.25 second), S
0To S
2(0.50 second) ..., S
0To S
13The blanking time of (3.92 seconds); Second ranks go out S
1To S
2(0.25 second), S
1To S
3(0.33 second) ..., S
1To S
13The blanking time of (3.66 seconds); The rest may be inferred, up to S
12To S
13Calculate the blanking time of (0.56 second).
(unit: 0.01 second)
Step 2: with blanking time inverse calculate heart rate, as shown in the table:
| Fro m To | S 0 | S 1 | S 2 | S 3 | S 4 | S 5 | S 6 | S 7 | S 8 | S 9 | S 10 | S 11 | S 12 |
| S 1 | 24 0 | - | - | - | - | - | - | - | - | - | - | - | - |
| S 2 | 12 0 | 24 0 | - | - | - | - | - | - | - | - | - | - | - |
| |
10 3 | 18 1 | 75 0 | - | - | - | - | - | - | - | - | - | - |
| |
60 | 80 | 12 0 | 14 2 | - | - | - | - | - | - | - | - | - |
| S 5 | 5 4 | 69 | 98 | 11 3 | 54 5 | - | - | - | - | - | - | - | - |
| S 6 | 47 | 59 | 80 | 89 | 24 0 | 42 8 | - | - | - | - | - | - | - |
| S 7 | 36 | 42 | 52 | 56 | 92 | 11 1 | 15 3 | - | - | - | - | - | - |
| |
30 | 34 | 40 | 42 | 60 | 68 | 81 | 17 6 | - | - | - | - | - |
| S 9 | 27 | 30 | 35 | 36 | 49 | 54 | 62 | 10 7 | 28 5 | - | - | - | - |
| S 10 | 21 | 23 | 26 | 27 | 33 | 35 | 39 | 53 | 75 | 10 5 | - | - | - |
| |
20 | 22 | 24 | 25 | 31 | 33 | 36 | 47 | 65 | 85 | 50 0 | - | - |
| S 12 | 17 | 19 | 21 | 21 | 25 | 26 | 28 | 35 | 44 | 53 | 10 7 | 13 9 | - |
| S 13 | 15 | 16 | 17 | 18 | 20 | 21 | 22 | 26 | 31 | 35 | 53 | 60 | 10 7 |
Step 3: with the heart rate digital polling of above-mentioned (50～240) in the reasonable scope to following interval:
| 240-214：3 213-193：0 192-175：2 174-161：0 160-148：1 | 147-138：2 137-129：0 128-121：0 120-113：3 112-107：4 | 106-102：2 101-97：1 96-92：1 91-88：1 87-84：1 | 83-81：1 80-77：2 76-74：1 73-72：0 71-69：1 | 68-67：1 66-65：1 64-62：1 61-61：1 60-59：3 | 58-57：0 56-55：1 54-54：3 53-52：3 51-50：0 |
Wherein, the heart rate range of described ballot box representative with rational R-R interval (0.25 second-1.2 seconds) be distinguished into 30 blanking time scope, again with this blanking time inverse calculate above-mentioned heart rate range.
Step 4: when finishing during the signals collecting to be taken a sample, examine adjacent two ballot boxes closely, find out two the highest adjacent ballot boxes of number of votes obtained.The highest ticket is [120-113] and [112-107] two adjacent ballot boxes in the last example, therefore the numeral at the 107-120 heart rate range in the step 2 table can be drawn bottom line, and the signal that produces these hearts rate is possible pulse signal, so the pulse signal in the example should be contained in S
0, S
2, S
3, S
4, S
5, S
7, S
9, S
10, S
12, S
13In.That is the real heart rate value that is collected during this signals collecting of 4 seconds should be 120,120,107,107,113,111,107, and therefore desirable its average computation goes out heart rate.
Certainly, if adjacent two ballot boxes can't produce the highest ticket, then with last signal S
13As the S during next signals collecting
0, and the accumulative total poll is during next signals collecting, and repeat step 1 to step 4.
Step 5: with the S of last signal during as next signals collecting
0, and remove poll, again from step 1.So, just can in one period continuous time, detect the heart rate of (real-time) in real time constantly.
For further detecting the ballot algorithm accuracy that the present invention is used for heart rate measurement, show the heart rate value that the present invention is measured and utilize the measured heart rate value of electrocardiogram to compare.Because the noise during motion is too much, make that can't lead electrocardiogram from three reads the R-R interval, heart rate that therefore will utilize ballot algorithm of the present invention in one period continuous time, to measure to have a rest and post exercise answer heart rate with utilize three to lead the heart rate that electrocardiogram records and compare.Fig. 2 shows respectively algorithm and three heart rate when leading the measured rest of electrocardiogram of voting with the present invention, and Fig. 3 shows to vote with the present invention respectively and replys heart rate after algorithm and three is led the measured motion of electrocardiogram, wherein, solid line representative utilizes the present invention's measured heart rate of algorithm of voting, and dotted line is then represented and utilized three to lead the measured heart rate of electrocardiogram.From Fig. 2 and Fig. 3 as can be known, utilize cheaply heart rate monitor to cooperate the measured heart rate of majority rule ballot algorithm of the present invention quite to approach and utilize three to lead the measured heart rate of electrocardiogram, and its error is about 3%, tie up in the acceptable range of error.Therefore, algorithm filtering noise really draws heart rate value more accurately but majority rule of the present invention is voted.
In addition, a part of error (circle choosing place) appears in Fig. 3, the heart rate value of this estimation is about half of actual heart rate value, yet this error may be because intermediary pulse signal is not detected, add ballot and become majority the feasible blanking time that comprises two R-R intervals, thereby draw half measured value of actual heart rate value is only arranged, so error caused by the pulse signal of leakage, but not noise signal causes.Moreover as seen from the figure, majority rule ballot algorithm of the present invention can recover correct heart rate value estimation rapidly again, and the aforementioned also filtering easily of error that comprises two R-R intervals.Therefore, majority rule ballot algorithm of the present invention is quite reliable method for measuring heart rate.
Fig. 4 shows respectively with the present invention's algorithm and 12 of voting and leads the measured exercise heart rate of electrocardiogram, and wherein, 12 lead five motion stages that cardiograph system cooperates treadmill, reads heart rate value 10 seconds every sampling in 3 minutes.Similarly, solid line representative utilizes the present invention's measured heart rate of algorithm of voting, and dotted line is then represented and utilized 12 to lead the measured heart rate of electrocardiogram.The heart rate of second to five motion stage is exaggerated demonstration among the figure, and also visible ballot algorithm of the present invention has goodish accuracy.
In sum, the present invention proposes a kind of high-reliability method for measuring heart rate, and it utilizes the majority rule voting process to rebuild the R-R interval, avoids noise jamming and draws heart rate value accurately.In addition, the present invention only need cooperate cheaply heart rate monitor to come detection signal, and need not the cardiograph of expensive and high manpower, can try to achieve the suitable heart rate value of accuracy and electrocardiogram, and the important references as the health pointer can be provided.
Though the present invention with preferred embodiment openly as above; so it is not in order to limit the scope of the invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing a little change and modification, so protection scope of the present invention is as the criterion when looking the scope that accompanying Claim defines.
Claims (12)
1. method for measuring heart rate comprises the following step:
(a) utilize a heart rate monitor during a prearranged signal is gathered in acquired signal;
(b) calculate blanking time between any two these signals;
(c) inverse with this blanking time calculates heart rate value;
(d) this heart rate value that abovementioned steps is calculated is voted, and drops into respectively in the ballot box of the different heart rate ranges of representative;
(e) find out the highest ballot box of number of votes obtained; And
(f) calculate heart rate.
2. method for measuring heart rate as claimed in claim 1, wherein the signal that is collected in step (a) comprises pulse signal and noise signal, and is preferably 2 to 8 seconds during this signals collecting.
3. method for measuring heart rate as claimed in claim 1, wherein step (b) comprises the blanking time between last signal that calculates during this signal and the last signals collecting.
4. method for measuring heart rate as claimed in claim 1 is wherein only voted at the heart rate value in reasonable heart rate range in step (d), and the heart rate value in reasonable heart rate range is not then voted, and this reasonable heart rate range is 50-240.
5. method for measuring heart rate as claimed in claim 1, wherein the heart rate range of this ballot box is divided into a plurality of intervals with rational R-R interval and is converted into heart rate range and gets, and this rational R-R interval is 0.25-1.2 second.
6. method for measuring heart rate as claimed in claim 1, wherein the heart rate range of this ballot box with reasonable heart rate range with etc. increment rate be distinguished into a plurality of intervals and get.
7. method for measuring heart rate as claimed in claim 1, wherein the ballot box that the number of votes obtained of being found out in step (e) is the highest is a single ballot box or is two the highest adjacent ballot boxes of number of votes obtained after the poll addition.
8. method for measuring heart rate as claimed in claim 1 wherein in step (e), if can't find out the highest ballot box of number of votes obtained, then adds up poll during next signals collecting, and repeating step (a)-(d) is to find out the highest ballot box of number of votes obtained.
9. method for measuring heart rate as claimed in claim 1, wherein step (f) is calculated the meansigma methods of this heart rate value that drops into the highest ballot box of this number of votes obtained and is drawn this heart rate.
10. method for measuring heart rate comprises the following step:
(a) utilize a heart rate monitor during a prearranged signal is gathered in acquired signal;
(b) calculate blanking time between any two these signals;
(c) vote for this blanking time that abovementioned steps is calculated, and drops into respectively and represent in the ballot box of different intervals scope;
(d) find out the highest ballot box of number of votes obtained; And
(e) calculate heart rate.
11. method for measuring heart rate as claimed in claim 10, wherein scope blanking time of this ballot box is divided into a plurality of intervals with rational R-R interval and gets.
12. method for measuring heart rate as claimed in claim 10, wherein step (e) calculates heart rate value with the inverse of this blanking time of dropping into the highest ballot box of this number of votes obtained, and calculates the meansigma methods of this heart rate value and draw this heart rate.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101589951A (en) * | 2008-05-27 | 2009-12-02 | 北京谊安医疗系统股份有限公司 | Heart rate monitoring system |
| CN104107038A (en) * | 2013-04-16 | 2014-10-22 | 达尔生技股份有限公司 | Pulse wave signal de-noising processing method and device and pulse oximeter |
| CN104207766A (en) * | 2014-09-28 | 2014-12-17 | 广州视源电子科技股份有限公司 | Data processing method of optical heart rate measuring equipment |
| CN106419887A (en) * | 2016-10-21 | 2017-02-22 | 上海与德信息技术有限公司 | Heart rate detection method and system |
| CN108937907A (en) * | 2017-05-26 | 2018-12-07 | 北京小米移动软件有限公司 | The acquisition method and device of heart rate |
| CN110403593A (en) * | 2018-04-26 | 2019-11-05 | 新唐科技股份有限公司 | Heart rate method for detecting |
-
2006
- 2006-11-10 CN CNA2006101484568A patent/CN101176662A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101589951A (en) * | 2008-05-27 | 2009-12-02 | 北京谊安医疗系统股份有限公司 | Heart rate monitoring system |
| CN101589951B (en) * | 2008-05-27 | 2012-10-31 | 北京谊安医疗系统股份有限公司 | Heart rate monitoring system |
| CN104107038A (en) * | 2013-04-16 | 2014-10-22 | 达尔生技股份有限公司 | Pulse wave signal de-noising processing method and device and pulse oximeter |
| CN104207766A (en) * | 2014-09-28 | 2014-12-17 | 广州视源电子科技股份有限公司 | Data processing method of optical heart rate measuring equipment |
| CN104207766B (en) * | 2014-09-28 | 2016-07-06 | 广州视源电子科技股份有限公司 | Data processing method of optical heart rate measuring equipment |
| CN106419887A (en) * | 2016-10-21 | 2017-02-22 | 上海与德信息技术有限公司 | Heart rate detection method and system |
| CN106419887B (en) * | 2016-10-21 | 2019-09-24 | 上海与德信息技术有限公司 | A kind of heart rate detection method and system |
| CN108937907A (en) * | 2017-05-26 | 2018-12-07 | 北京小米移动软件有限公司 | The acquisition method and device of heart rate |
| CN110403593A (en) * | 2018-04-26 | 2019-11-05 | 新唐科技股份有限公司 | Heart rate method for detecting |
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