CN106889980A - Self adaptation switching heart rate detection method, device and wearable heartbeat detection device based on spectrogram - Google Patents
Self adaptation switching heart rate detection method, device and wearable heartbeat detection device based on spectrogram Download PDFInfo
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- CN106889980A CN106889980A CN201710025442.5A CN201710025442A CN106889980A CN 106889980 A CN106889980 A CN 106889980A CN 201710025442 A CN201710025442 A CN 201710025442A CN 106889980 A CN106889980 A CN 106889980A
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- heart rate
- frequency
- coloured light
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- spectrogram
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000006978 adaptation Effects 0.000 title claims abstract description 22
- 230000003595 spectral effect Effects 0.000 claims abstract description 20
- 238000013507 mapping Methods 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims 1
- 238000004590 computer program Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000000747 cardiac effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000037147 athletic performance Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
Abstract
The present invention relates to heart rate detection technical field, self adaptation switching heart rate detection method and wearable heartbeat detection device more particularly to based on spectrogram.The spectral intensity figure to form that temporally frequency relation is distributed is mapped by carrying out Fourier transform to the electrocardiosignal obtained under coloured light, using user's heart rate frequency peak region line in time in spectral intensity figure as changes in heart rate curve, by the continuity of changes in heart rate curve it may determine that the validity that currently coloured light is gathered to heart rate signal, the photosignal collected under current coloured light is unintelligible, when can not understand reflection changes in heart rate situation, penetrability coloured light higher is immediately switched to gather electrocardiosignal, to ensure the continuity and accuracy of heart rate detection.Switch heart rate detection method for the self adaptation for being based on spectrogram, functional module construction can be combined into by setting up functional module, implemented by storing computer program in a computer-readable storage medium.
Description
Technical field
The present invention relates to heart rate detection technical field, the self adaptation switching heart rate detection method more particularly to based on spectrogram
With wearable heartbeat detection device.Switch heart rate detection method for the self adaptation for being based on spectrogram, can be by setting up work(
Energy module, is combined into functional module construction, is implemented by storing computer program in a computer-readable storage medium.
Background technology
With the improvement of living standards, people for health requirement more and more higher, wherein, many people selection is run etc. can
Using effective consumption of calorie, temper cardio-pulmonary function and even improve the health care of sleep the aerobic exercise of quality as daily exercise project.Heart rate one
It has been the most direct indicator for weighing aerobic exercise ratio since straight, understanding the maximum aerobic heart rate of itself contributes to motion to like
The more healthy motion of person, and obtain more preferable athletic performance.And the motion of excessively prolonged too high heart rate, it is to damage to health
Wound, this is required for being avoided as possible in competition and training.Therefore, the people or sports fan of health status are much paid close attention to all
Like having on the heartbeat detection devices such as heart rate detection bracelet, wrist-watch, earphone with oneself.These heartbeat detection devices more focus on timeliness
Property, and accurate detection need not be accomplished, generally use optics plethysmography（PPG）Method carry out the detection of heart rate.
Optics plethysmography（PPG）Method be gather human body surface reflection certain light under electrocardiosignal, analysis obtain heart rate
Situation of change.Human body different parts are reflected light, transmitted or are absorbed, and blood also has absorption to the light of specific wavelength
Effect, the wavelength all can largely be absorbed during each cardiac pumping, and heartbeat is assured that with this.The skin of human body, bone, fat
Fat etc. is fixed to the reflected value of light, and capillary and arteriovenous volume can be continually changing with blood flow, so right
What the reflection of light showed is also undulating value, the frequency that blood is flowed through when the frequency of this undulating value is exactly cardiac pumping, you can
To reflect heart rate situation.Using optics plethysmography（PPG）Heart rate detection method can only detect heart rate signal, do not moved
When external noise influence, and structure is relatively easy, is easy to carry, and is widely used in wearable heartbeat detection device
On.But which there is also compared with big limitation, such as different ethnic groups, the different colours of skin to the light absorption degree of different wave length not
Together, human body is in the case where sweating, and light reflectance is also different, therefore current wearable heartbeat detection device on the market is all
It is difficult to more accurate heart rate detection.
The content of the invention
The purpose of the present invention is：Provide the self adaptation switching heart rate detection method based on spectrogram and the inspection of wearable heart rate
Device is surveyed, so as to realize continuity and accuracy heart rate detection higher.
The switching heart rate detection method of the self adaptation based on spectrogram that the present invention is given, comprises the following steps：
Photoelectric signal collection step：Photosignal of the collection skin surface under coloured light A；
Spectral intensity figure mapping step：The photosignal for collecting is mapped through Fourier transform to form m- frequency relation on time
The spectral intensity figure of distribution；
Coloured light switch step：The region that synchronization frequency is most concentrated in definition spectral intensity figure is frequency peak region, then frequency
Rate peak region line in time is changes in heart rate curve, in the discontinuous region of changes in heart rate curve, switches to collection
Photosignal under coloured light B, the penetrability of the coloured light B is higher than coloured light A.
Switch heart rate detection method for the self adaptation based on spectrogram, can be combined successfully by setting up functional module
Energy module frame, is implemented by storing computer program in a computer-readable storage medium.
In order to realize that the above-mentioned self adaptation based on spectrogram switches heart rate detection method, computer program can be write with structure
Functional module construction is built, in the computer-readable storage medium the wearable heartbeat detection device of computer program typing.
The beneficial effects of the present invention are carrying out Fourier transform and map to be formed by the electrocardiosignal obtained under coloured light
The spectral intensity figure of m- frequency relation distribution on time, user's heart rate frequency peak region in spectral intensity figure in time
Line as changes in heart rate curve, by the continuity of changes in heart rate curve it may determine that current coloured light is gathered to heart rate signal
Validity, the photosignal collected under current coloured light is unintelligible, i.e., when can not understand reflection changes in heart rate situation, immediately
It is switched to penetrability coloured light higher to gather electrocardiosignal, to ensure the continuity and accuracy of heart rate detection.
Brief description of the drawings
Fig. 1 is photoelectric signal collection modular structure schematic diagram.
Fig. 2 is spectral intensity schematic diagram.
Fig. 3 is the photosignal waveform diagram of green glow.
Fig. 4 is the photosignal waveform diagram of feux rouges or infrared light.
Specific embodiment
The invention will be further described with the following Examples.
For real-time detection heart rate situation, user's body-worn is built-in with the self adaptation switching heart rate detection based on spectrogram
The Intelligent bracelet of device, as shown in figure 1, having in Intelligent bracelet for gathering and recording skin surface in green glow（That is coloured light A）Under
Photosignal photoelectric signal collection module PD2 and PD3, for gathering skin surface in feux rouges or infrared light（That is coloured light B）
Under photosignal photoelectric signal collection module PD1 and PD4.Photoelectric signal collection module PD1, PD2, PD3, PD4 are placed on
In Intelligent bracelet, between skin between be separated with the glass material of all-transparent, it is also possible to photoelectric signal collection module PD1, PD2,
PD3, PD4 are placed on Intelligent bracelet outward and the part of direct skin contact, to reduce the loss during photoelectric signal collection.Intelligence
Energy bracelet can also replace with the wearable devices such as Intelligent heart rate earphone or intelligent watch according to the demand of client.Such as Fig. 3 and Fig. 4
Shown, the signal to noise ratio of green optical signal is higher, and the drift in temperature change is smaller, under normal circumstances with green glow be obtained with compared with
For clearly photosignal.The signal to noise ratio of feux rouges and infrared light is less better with respect to green glow, but the electrocardiosignal of collection also may be used
Penetrability for the detection of heart rate, and feux rouges and infrared light is higher than green glow, big so that relatively more, skin of perspiring in amount of exercise
Skin surface is in the case of the reflection enhancement of light, or crowd deep for the colour of skin, higher to the absorptivity of light, uses
Feux rouges or infrared light can obtain relatively sharp photosignal.
After user opens the Intelligent bracelet worn, photoelectric signal collection the module PD2 and PD3 of Intelligent bracelet gather skin immediately
Photosignal of the skin surface under green glow, the sample frequency of photoelectric signal collection module PD2 and PD3 is 200Hz, each optical telecommunications
Number acquisition module is per second collects 200 sampled points, and Intelligent bracelet carries out Fourier change to the photosignal of these sampled points
Analysis is changed, mapping forms the spectral intensity figure of on time m- frequency relation distribution as shown in Figure 2.In spectral intensity figure, horizontal seat
Mark represents the change of 0 ~ 5Hz of frequency, and ordinate represents time change, a frequency on each sampled point correspondence spectral intensity figure
Point, each transverse horizontal line represents the spectrum distribution at a certain moment, and the region that synchronization frequency is most concentrated is exactly frequency peak
Value region, frequency peak region line in time is changes in heart rate curve.The deep place of colourity is that frequency compares collection
In region, colourity represents noise signal, the frequency spectrum at multiple time points opened up well by shade than shallower place
Show to come, facilitate follow-up signal analysis.In the spectral intensity figure shown in Fig. 2, there is one to connect relatively in 1 ~ 2Hz regional extents
Continuous changes in heart rate curve, Intelligent bracelet is sentenced to the continuity of changes in heart rate curve in real time by two criterions once
It is disconnected：1）Diagram 1,4 regions in, the changes in heart rate curve it is default it is front and rear be no more than in the time period of 5 seconds, frequency peak
The frequency density in region drops below 30 sampled points, the frequency density difference in frequency peak region by more than 50 sampled points
Amplitude exceed default 20 sampled points, the color on changes in heart rate curve is from depth to shallow so that frequency peak region is at this
The state not planned a successor in the individual time period, Intelligent bracelet is judged as changes in heart rate curve within the time period in 1,4 regions of diagram
Discontinuously；2）Diagram 2,3 regions can serve as frequency peak region of the changes in heart rate curve at 250 seconds, it is illustrated that 2nd area
The frequency frequency in the frequency peak region in domain is in 1.5Hz or so, it is illustrated that the frequency frequency in frequency peak region in 3 regions exist
3Hz or so, two amplitudes of the frequency frequency phase-difference in frequency peak region exceed default 1Hz, and Intelligent bracelet is judged as heart rate
Change curve is discontinuous at 250 seconds.In the discontinuous region of changes in heart rate curve, Intelligent bracelet enables photosignal and adopts immediately
Collect module PD1 and PD4 to gather and record photosignal of the skin surface under feux rouges and infrared light.
Map to form what m- frequency relation on time was distributed by carrying out Fourier transform to the electrocardiosignal obtained under green glow
Spectral intensity figure, using user's heart rate frequency peak region line in time in spectral intensity figure as changes in heart rate curve,
By the continuity of changes in heart rate curve it may determine that the validity that is gathered to heart rate signal of green glow, collects under green glow
Photosignal is unintelligible, i.e., when can not understand reflection changes in heart rate situation, be immediately switched to penetrability feux rouges higher or infrared
Light gathers electrocardiosignal, ensureing the continuity and accuracy of heart rate detection.
Switch heart rate detection method for the above-mentioned self adaptation based on spectrogram, can be combined by setting up functional module
Into functional module construction, implemented by storing computer program in a computer-readable storage medium.
Claims (10)
1. the self adaptation based on spectrogram switches heart rate detection method, it is characterised in that comprise the following steps：
Photoelectric signal collection step：Photosignal of the collection skin surface under coloured light A；
Spectral intensity figure mapping step：The photosignal for collecting is mapped through Fourier transform to form m- frequency relation on time
The spectral intensity figure of distribution；
Coloured light switch step：The region that synchronization frequency is most concentrated in definition spectral intensity figure is frequency peak region, then frequency
Rate peak region line in time is changes in heart rate curve, in the discontinuous region of changes in heart rate curve, switches to collection
Photosignal under coloured light B, the penetrability of the coloured light B is higher than coloured light A.
2. the self adaptation based on spectrogram according to claim 1 switches heart rate detection method, it is characterised in that the color
Light A is green glow, and coloured light B is feux rouges or infrared light.
3. the self adaptation based on spectrogram according to claim 1 switches heart rate detection method, it is characterised in that the heart
Rate change curve refers to discontinuously：Within the default time period, the amplitude that there is the frequency density difference in frequency peak region surpasses
Cross preset value.
4. the self adaptation based on spectrogram according to claim 1 switches heart rate detection method, it is characterised in that the heart
Rate change curve refers to discontinuously：There are multiple frequency peak regions, the frequency frequency in these frequency peak regions in synchronization
The amplitude of difference exceedes preset value.
5. the self adaptation based on spectrogram switches heartbeat detection device, it is characterised in that including：
Photoelectric signal collection module：Its photosignal of collection skin surface under coloured light A；
Spectral intensity figure mapping block：The photosignal that it is collected maps to form m- frequency pass on time through Fourier transform
It is the spectral intensity figure of distribution；
Coloured light handover module：The region that synchronization frequency is most concentrated in its definition spectral intensity figure is frequency peak region, then
Frequency peak region line in time is changes in heart rate curve, in the discontinuous region of changes in heart rate curve, switches to and adopts
Photosignal under collection coloured light B, the penetrability of the coloured light B is higher than coloured light A.
6. the self adaptation based on spectrogram according to claim 5 switches heartbeat detection device, it is characterised in that the color
Light A is green glow, and coloured light B is feux rouges or infrared light.
7. the self adaptation based on spectrogram according to claim 5 switches heartbeat detection device, it is characterised in that the heart
Rate change curve refers to discontinuously：Within the default time period, the amplitude that there is the frequency density difference in frequency peak region surpasses
Cross preset value.
8. the self adaptation based on spectrogram according to claim 5 switches heartbeat detection device, it is characterised in that the heart
Rate change curve refers to discontinuously：There are multiple frequency peak regions, the frequency frequency in these frequency peak regions in synchronization
The amplitude of difference exceedes preset value.
9. wearable heartbeat detection device, it is characterised in that including any one of claim 5 ~ 8 based on spectrogram
Self adaptation switches heartbeat detection device, and the self adaptation that should be based on spectrogram switches the photoelectric signal collection module of heartbeat detection device
All-transparent material is separated between with direct skin contact or between skin.
10. wearable heartbeat detection device according to claim 9, it is characterised in that the wearable heart rate detection dress
Put is Intelligent heart rate earphone, Intelligent bracelet or intelligent watch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025442.5A CN106889980A (en) | 2017-01-13 | 2017-01-13 | Self adaptation switching heart rate detection method, device and wearable heartbeat detection device based on spectrogram |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025442.5A CN106889980A (en) | 2017-01-13 | 2017-01-13 | Self adaptation switching heart rate detection method, device and wearable heartbeat detection device based on spectrogram |
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| CN106889980A true CN106889980A (en) | 2017-06-27 |
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| CN201710025442.5A Pending CN106889980A (en) | 2017-01-13 | 2017-01-13 | Self adaptation switching heart rate detection method, device and wearable heartbeat detection device based on spectrogram |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109222951A (en) * | 2018-10-30 | 2019-01-18 | 广东小天才科技有限公司 | A kind of heart rate data acquisition method, device, terminal device and storage medium |
| CN111990983A (en) * | 2020-08-31 | 2020-11-27 | 平安国际智慧城市科技股份有限公司 | Heart rate monitoring method, intelligent pen, terminal and storage medium |
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| US20140081153A1 (en) * | 2012-09-18 | 2014-03-20 | Casio Computer Co., Ltd. | Pulse data detecting apparatus, pulse data detecting method, and storage medium having pulse data detection program recorded thereon |
| CN104207761A (en) * | 2013-06-03 | 2014-12-17 | 飞比特公司 | Heart rate data collection |
| CN104837403A (en) * | 2012-11-27 | 2015-08-12 | 佛吉亚汽车座椅有限责任公司 | Vehicle seat with integrated sensors |
| CN105534513A (en) * | 2016-01-12 | 2016-05-04 | 杭州匠物网络科技有限公司 | Dual-wavelength heart rate measuring device and method |
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2017
- 2017-01-13 CN CN201710025442.5A patent/CN106889980A/en active Pending
Patent Citations (5)
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| CN102647941A (en) * | 2009-10-06 | 2012-08-22 | 皇家飞利浦电子股份有限公司 | Method and system for carrying out photoplethysmography |
| US20140081153A1 (en) * | 2012-09-18 | 2014-03-20 | Casio Computer Co., Ltd. | Pulse data detecting apparatus, pulse data detecting method, and storage medium having pulse data detection program recorded thereon |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109222951A (en) * | 2018-10-30 | 2019-01-18 | 广东小天才科技有限公司 | A kind of heart rate data acquisition method, device, terminal device and storage medium |
| CN111990983A (en) * | 2020-08-31 | 2020-11-27 | 平安国际智慧城市科技股份有限公司 | Heart rate monitoring method, intelligent pen, terminal and storage medium |
| CN111990983B (en) * | 2020-08-31 | 2023-08-22 | 深圳平安智慧医健科技有限公司 | Heart rate monitoring method, intelligent pen, terminal and storage medium |
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Application publication date: 20170627 |
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| RJ01 | Rejection of invention patent application after publication |