CN106725412A - Method for measuring heart rate and device - Google Patents
Method for measuring heart rate and device Download PDFInfo
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- CN106725412A CN106725412A CN201710170653.8A CN201710170653A CN106725412A CN 106725412 A CN106725412 A CN 106725412A CN 201710170653 A CN201710170653 A CN 201710170653A CN 106725412 A CN106725412 A CN 106725412A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009532 heart rate measurement Methods 0.000 claims abstract description 34
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 13
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 9
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 7
- 230000033764 rhythmic process Effects 0.000 claims description 7
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- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000003902 lesion Effects 0.000 abstract description 4
- 230000005856 abnormality Effects 0.000 abstract description 3
- 238000003745 diagnosis Methods 0.000 abstract description 3
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/0255—Recording instruments specially adapted therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- Animal Behavior & Ethology (AREA)
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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The present invention discloses a kind of method for measuring heart rate and device, and the accuracy of heart rate measurement is improved with signal clock feature extraction (clock characteristics hidden in extraction signal i.e. from comprising interference signal or flaw indication), forward direction estimation proof method (being verified to estimation before being carried out according to clock characteristics).The present invention can chronically measure, analyze and record the heart rate data of Intelligent bracelet user, and can be alarmed when finding that heart rate occurs abnormal, so as to ensure its life safety of user.System obtains the health of user by heart rate data, shortens the time that body abnormality is found, for treatment obtains the sufficient time.And when exception occurs in the body of user, when going to see a doctor, heart rate data of these long-term records in system can be as the important evidence of diagnosis.Problem is found that early stage body lesion and goes to hospital to be treated in time, ensured the healthy of user.
Description
Technical field
The present invention relates to heart rate detection technical field, and in particular to a kind of method for measuring heart rate and device.
Background technology
Discovery of the people to own bodies lesion, traditional method can only be by the impression of itself and other people discover
Go to find, speed is slow and can not grasp recent health, makes the life of people face larger threat.Cardiomotility is people
One of important vital sign, the heart rate data of people can reflect the multiple function index of the person, so long-term heart rate data
The health of individual can be reflected.There is the intelligence wearing product of more heart rate measurement in the market.Due to wearable device
When human body is moved, its contact distance with human body can change, or even there is the loose contact of short time or outer
Signal disturbs caused raw digital signal sequence pollution caused by carrying out electromagnetic interference source, and calculates the rhythm of the heart letter for making mistake
Breath, these wrong rhythm of the heart information seriously lose its original due meaning.
The content of the invention
The technical problems to be solved by the invention are that existing heart rate measurement device and method have measurement error, are carried
For a kind of method for measuring heart rate and device.
To solve the above problems, the present invention is achieved by the following technical solutions：
Method for measuring heart rate, comprises the following steps：
Step 1, using heart rate sensor by signal acquisition periods gather heart rate data, obtain characterize rhythm of the heart feature it is original
Digital signal sequences；
Step 2, raw digital signal sequence is gone by Kalman filter to capture the raw digital signal sequence
Each rising edge and trailing edge, are derived from original pulse sequence；
Step 3, clock characteristics extraction is carried out to original pulse sequence, i.e., after a heart rate pulse is detected, record the
The time t that one pulse occurs1, and from time t1The time period t that next heart rate pulse will appear from is estimated forward1~t1+Δt；
Step 4, instantly a heart rate pulse appear in estimated time period t1~t1When in+Δ t, second pulse is recorded
The time t of appearance2, and from time t2The time period that next heart rate pulse will appear from is estimated forward；
The recording process of step 5, circulation step 3 or 4, instantly a heart rate pulse appear in estimated time period tn-1~
tn-1When in+Δ t, the time t that second pulse of record occursn；
Step 6, the time that n recorded pulse occur is utilized, calculate preliminary heart rate value fosc, i.e.,
Step 7, according to preliminary heart rate value foscPredict the time point that next heart rate pulse will occur；Instantly a heart rate arteries and veins
Go out now, judge whether the time of occurrence of this heart rate pulse fell on the time point predicted；
Step 8, the cycle criterion process of repeat step 7,
If in predetermined numbers range, the time of occurrence of each heart rate pulse was all fallen within predicted time point
When, then assert preliminary heart rate value foscIt is the true heart rate value in this cycle, and starts the heart rate measurement cycle next time；
If in predetermined numbers range, when the time of occurrence at least one heart rate pulse occur all falls within predicted
Between point it is outer when, then the number of times of appropriate increase cycle criterion；
If in additional cycle criterion, the time of occurrence of each heart rate pulse all falls within when on predicted time point, then
Also preliminary heart rate value f is assertoscIt is the true heart rate value in this cycle, and starts the heart rate measurement cycle next time；
If in additional cycle criterion, the time of occurrence at least one heart rate pulse occur all falls within predicted time point
When outer, then terminate the heart rate measurement in this cycle, while restarting the heart rate measurement cycle next time.
In above-mentioned steps 3-5, the span of time interval Δ t was between 0.375 second~1.5 seconds.
In above-mentioned steps 3-5, if not occurring corresponding heart rate pulse within the time period estimated, terminate this week
The heart rate measurement of phase, while restarting the heart rate measurement cycle next time.
Realize the heart rate measurement device of the above method, including heart rate sensor, ADC modular converters and MCU main control modules；The heart
The output end of rate sensor is connected to the input of ADC modular converters, and ADC modular converters are by bus and MCU main control modules
Input is connected；Heart rate sensor measures the heart rate signal of people, its heart rate data for being output as analog voltage amount；ADC moduluss of conversion
The heart rate data of analog voltage amount is converted to block the heart rate data of digital quantity；MCU main control modules are with described in claim 1
Algorithm extracts heart rate value from heart rate data.
Above-mentioned heart rate measurement device still further comprises communication module；The communication module is connected with MCU main control modules；Communication
Module realizes the communication with outside expansion equipment, and heart rate value is sent to outside expansion equipment.
In such scheme, the communication module is serial ports bluetooth communication.
In such scheme, outside expansion equipment is mobile phone, panel computer or computer.
Above-mentioned heart rate measurement device still further comprises display, and the display is connected with MCU main control modules；Display will
Heart rate value is shown.
Compared with prior art, the present invention has used signal clock feature extraction (to believe from comprising interference signal or defect
The clock characteristics hidden in signal are extracted in number), forward direction estimation proof method (being carried out according to clock characteristics before to estimation checking)
To improve the accuracy of heart rate measurement.The present invention can chronically measure, analyze and record the heart rate number of Intelligent bracelet user
According to, and can be alarmed when finding that heart rate occurs abnormal, so as to ensure its life safety of user.System passes through
Heart rate data obtains the health of user, shortens the time that body abnormality is found, for treatment obtains the sufficient time.And
And when the body of user occurs abnormal, when going to see a doctor, heart rate data of these long-term records in system can be as
The important evidence of diagnosis.Problem is found that early stage body lesion and goes to hospital to be treated in time, ensured and worn
Person's is healthy, and this will provide preferably solution to China's medical development.
Brief description of the drawings
Fig. 1 is the flow chart of method for measuring heart rate.
Fig. 2 is the theory diagram of heart rate measurement device.
Specific embodiment
A kind of method for measuring heart rate, as shown in figure 1, it specifically includes following steps：
Step 1, using a heart rate sensor by signal acquisition periods gather heart rate data, sign is converted to by ADC
The raw digital signal sequence of rhythm of the heart feature.The output signal of above-mentioned heart rate sensor is the magnitude of voltage for changing, according to voltage amplitude
The change of value reflects the change of heart rate data.
After step 2, acquisition characterize the raw digital signal sequence of rhythm of the heart feature, one card with differentiator output of design
Thalmann filter, by after the above-mentioned Kalman filter with differentiator output, obtaining signal, the signal capture to signal
Each rising edge and trailing edge, i.e. original pulse sequence.
Include rhythm of the heart pulse in step 3, the original pulse sequence for obtaining, it is right in order to further improve the precision of measurement
Original pulse sequence carries out clock characteristics extraction.After a heart rate pulse is detected, current time t is recorded1And from it is current when
Between estimate forward under time period t that wholeheartedly pulse will appear from1~t1+Δt。
Due to the heart rate zone of reasonableness 40~160 of people, therefore the time interval Δ t for being estimated is preferably 0.375~1.5
Second.
Step 4, instantly a heart rate pulse have appeared in the time period t estimated in step 31~t1When in+Δ t, record is worked as
Preceding time t2, and from time t2And the time period t that wholeheartedly pulse will appear from is estimated down forward from current time2~t2+Δt。
After step 5, repeatedly step 3 and step 4, time for occurring using the pulse number n for obtaining and pulse (t1,
T2 ... tn), and preliminary heart rate value f is calculated accordinglyosc。
Calculate preliminary heart rate value foscWhen, the time t occurred by first heart rate pulse1, last heart rate pulse occur
Time tnAnd total heart rate pulse number n calculates heart rate value fosc, its specific formula for calculation is：
The specific time that each heart rate pulse occurs judges the heart rate sensor output signal width in rational theoretical time
It is worth the maximum moment.In the step of repeatedly circulating 3 and step 4, if there is not corresponding heart rate within the time period of estimation
Pulse, then terminate this heart rate measurement cycle, while restarting a cycle for heart rate measurement.
Step 6, utilize the preliminary heart rate value f for being calculatedosc, go to predict next heart rate pulse will occur it is specific when
Between point；Instantly when a heart rate pulse occurs, judge whether the time of occurrence of this heart rate pulse fell on the time predicted；
The time point that next heart rate pulse will occur is predicted, the time point is a less time range, time model
The value enclosed should cause to meet cycle heart rate value foscIt is required that heart rate pulse can fall in the time range, prevent again
Undesirable heart rate pulse is appeared in the time range, ensures the reliability of prediction and checking.The value of time range
It is typically set to 1~4 time period of heart rate pulse of tolerance, such as fosc=80, then time range be generally 0.732s~0.75s
In certain time between certain time in 0.75s~0.769s.
Step 7, repeat step 6, carry out cycle criterion process several times.
If this several times cycle criterion result all meet preliminary heart rate value foscPredict the outcome, i.e. each heart rate pulse
Time of occurrence is all fallen within when on predicted time point, then end loop, and goes to confirm preliminary heart rate value f into step 8osc's
Correctness.
If this is occurred in that in cycle criterion result several times do not meet once preliminary heart rate value foscPredict the outcome, that is, go out
The time of occurrence of existing at least one heart rate pulse is all fallen within when outside predicted time point, then the appropriate number of times for increasing cycle criterion,
If no longer occurring not meeting preliminary heart rate value f in additional cycle criterion resultoscPredict the outcome, then terminate
Circulation, and go to confirm preliminary heart rate value f into step 8oscCorrectness.
If occurring not meeting preliminary heart rate value f again in additional cycle criterion resultoscPredict the outcome, then terminate
The heart rate measurement in this cycle, restarts a heart rate measurement cycle.
Step 8, as preliminary heart rate value foscCorrectness it is correct when, then by the preliminary heart rate value foscAs true heart rate value
F is exported, and terminates this measure the cycle.
It is of the invention main with the accuracy for improving heart rate measurement before signal clock feature extraction to estimation proof method.
A kind of heart rate measurement device of the above method is realized, as shown in Fig. 2 main changed by heart rate sensor, high-speed ADC
Module, MCU main control modules and serial ports bluetooth module composition.The output end of heart rate sensor is connected to high-speed ADC modular converter
Input, high-speed ADC modular converter pass through I2C buses are connected with MCU main control modules, and heart rate data S (mTs) be sent to
MCU main control modules, are calculated heart rate value f, MCU main control module and are connected by serial ports with serial ports bluetooth module by MCU main control modules, string
Mouth bluetooth module obtains heart rate value f from MCU main control modules by serial ports, and heart rate value f is sent out by way of Bluetooth communication
Give outside extension.Outside extends through mobile Internet and is uploaded to Cloud Server, by Cloud Server record and analyzing personal
Long-term heart rate data.In the present invention, outside expansion equipment is mobile phone, panel computer or computer.
The effect of heart rate sensor is the heart rate signal for measuring people, and heart rate sensor is output as the heart rate of analog voltage amount
Data S (t).The effect of high-speed ADC modular converter is the heart rate that heart rate data S (t) of analog voltage amount is converted to digital quantity
Data S (mTs).MCU main control modules are the carriers of algorithm part in the present invention, and it is with the algorithm in the present invention from heart rate data
S(mTs) in extract heart rate value f exactly.The effect of serial ports bluetooth module is that heart rate value f is sent into mobile phone terminal.
Heart rate value f in order to be obtained to heart rate measurement device intuitively shown, the heart rate measurement device
Display is still further comprised, the display is connected with MCU main control modules；Display is shown heart rate value.
The heart rate measurement device that the present invention is announced can make Intelligent bracelet in actual applications, and it combines mobile terminal mobile phone
And the system of Cloud Server composition can chronically measure, analyze and record the heart rate data of Intelligent bracelet user, and
Can be alarmed when finding that heart rate occurs abnormal, so as to ensure the life security of user.System is obtained by heart rate data
The health of user is taken, shortens the time that body abnormality is found, for treatment obtains the sufficient time.And work as user
Body occur abnormal, when going to see a doctor, heart rate data of these long-term records in system can be as diagnosis
Important evidence.Problem is found that early stage body lesion and goes to hospital to be treated in time, ensured that the body of user is good for
Health, this will provide preferably solution to China's medical development.
Claims (8)
1. method for measuring heart rate, it is characterized in that, comprise the following steps：
Step 1, using heart rate sensor by signal acquisition periods gather heart rate data, obtain characterize rhythm of the heart feature original figure
Signal sequence；
Step 2, raw digital signal sequence is gone by Kalman filter capture the raw digital signal sequence each
Rising edge and trailing edge, are derived from original pulse sequence；
Step 3, clock characteristics extraction is carried out to original pulse sequence, i.e., after a heart rate pulse is detected, record first
The time t that pulse occurs1, and from time t1The time period t that next heart rate pulse will appear from is estimated forward1~t1+Δt；
Step 4, instantly a heart rate pulse appear in estimated time period t1~t1When in+Δ t, second pulse of record occurs
Time t2, and from time t2The time period that next heart rate pulse will appear from is estimated forward；
The recording process of step 5, circulation step 3 or 4, instantly a heart rate pulse appear in estimated time period tn-1~tn-1+
When in Δ t, the time t that second pulse of record occursn；
Step 6, the time that n recorded pulse occur is utilized, calculate preliminary heart rate value fosc, i.e.,
Step 7, according to preliminary heart rate value foscPredict the time point that next heart rate pulse will occur；Instantly a heart rate pulse goes out
Now, judge whether the time of occurrence of this heart rate pulse fell on the time point predicted；
Step 8, the cycle criterion process of repeat step 7,
If in predetermined numbers range, the time of occurrence of each heart rate pulse all falls within when on predicted time point, then
Assert preliminary heart rate value foscIt is the true heart rate value in this cycle, and starts the heart rate measurement cycle next time；
If in predetermined numbers range, the time of occurrence at least one heart rate pulse occur all falls within predicted time point
When outer, then suitably increase the number of times of cycle criterion；
If in additional cycle criterion, the time of occurrence of each heart rate pulse is all fallen within when on predicted time point, then also recognized
Fixed preliminary heart rate value foscIt is the true heart rate value in this cycle, and starts the heart rate measurement cycle next time；
If in additional cycle criterion, the time of occurrence at least one heart rate pulse occur is all fallen within when outside predicted time point,
Then terminate the heart rate measurement in this cycle, while restarting the heart rate measurement cycle next time.
2. method for measuring heart rate according to claim 1, it is characterised in that：In step 3-5, the value of time interval Δ t
Scope was between 0.375 second~1.5 seconds.
3. method for measuring heart rate according to claim 1, it is characterised in that：In step 3-5, if do not estimated
Occur corresponding heart rate pulse in time period, then terminate the heart rate measurement in this cycle, while restarting heart rate measurement next time
Cycle.
4. the heart rate measurement device of claim 1 methods described is realized, it is characterized in that, including heart rate sensor, ADC modular converters
With MCU main control modules；
The output end of heart rate sensor is connected to the input of ADC modular converters, and ADC modular converters are by bus and MCU master controls
The input of module is connected；
Heart rate sensor measures the heart rate signal of people, its heart rate data for being output as analog voltage amount；ADC modular converters will be simulated
The heart rate data of voltage is converted to the heart rate data of digital quantity；MCU main control modules are with the algorithm described in claim 1 from the heart
Rate extracting data goes out heart rate value.
5. heart rate measurement device according to claim 4, it is characterized in that, still further comprise communication module；The communication mould
Block is connected with MCU main control modules；Communication module realizes the communication with outside expansion equipment, and by heart rate value to outside expansion equipment
Send.
6. heart rate measurement device according to claim 5, it is characterized in that, the communication module is serial ports Bluetooth communication mould
Block.
7. heart rate measurement device according to claim 5, it is characterized in that, outside expansion equipment be mobile phone, panel computer or
Computer.
8. heart rate measurement device according to claim 4, it is characterized in that, still further comprise display, the display with
MCU main control modules are connected；Display is shown heart rate value.
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| CN201710170653.8A CN106725412A (en) | 2017-03-21 | 2017-03-21 | Method for measuring heart rate and device |
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| CN201710170653.8A CN106725412A (en) | 2017-03-21 | 2017-03-21 | Method for measuring heart rate and device |
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Citations (5)
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| CN201710350U (en) * | 2009-08-21 | 2011-01-19 | 徐国栋 | Wrist-type heart rate monitor |
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| CN104367344A (en) * | 2014-10-10 | 2015-02-25 | 广东工业大学 | Method and device for detecting instant heart rate of fetus on basis of Shanon envelope |
| CN104545870A (en) * | 2015-01-23 | 2015-04-29 | 苏州本草芙源医疗设备有限公司 | Heart rate detection mattress and method |
| CN106236041A (en) * | 2016-08-23 | 2016-12-21 | 电子科技大学 | A kind of measure in real time and accurately heart rate and the algorithm of breathing rate and system |
-
2017
- 2017-03-21 CN CN201710170653.8A patent/CN106725412A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201710350U (en) * | 2009-08-21 | 2011-01-19 | 徐国栋 | Wrist-type heart rate monitor |
| CN102178536A (en) * | 2011-03-29 | 2011-09-14 | 苏州易寻传感网络科技有限公司 | Method and system for measuring oxygen saturation and heart rate |
| CN104367344A (en) * | 2014-10-10 | 2015-02-25 | 广东工业大学 | Method and device for detecting instant heart rate of fetus on basis of Shanon envelope |
| CN104545870A (en) * | 2015-01-23 | 2015-04-29 | 苏州本草芙源医疗设备有限公司 | Heart rate detection mattress and method |
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