CN108124419B - Blood pressure measuring method, intelligent heart rate earphone and system - Google Patents
Blood pressure measuring method, intelligent heart rate earphone and system Download PDFInfo
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- CN108124419B CN108124419B CN201680000757.8A CN201680000757A CN108124419B CN 108124419 B CN108124419 B CN 108124419B CN 201680000757 A CN201680000757 A CN 201680000757A CN 108124419 B CN108124419 B CN 108124419B
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- 230000036772 blood pressure Effects 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000013186 photoplethysmography Methods 0.000 claims abstract description 72
- 210000005069 ears Anatomy 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 43
- 238000004364 calculation method Methods 0.000 claims description 38
- 210000004204 blood vessel Anatomy 0.000 claims description 37
- 238000004891 communication Methods 0.000 claims description 10
- 238000005094 computer simulation Methods 0.000 claims description 7
- 230000007774 longterm Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 22
- 230000033764 rhythmic process Effects 0.000 description 39
- 230000004872 arterial blood pressure Effects 0.000 description 12
- 210000004369 blood Anatomy 0.000 description 11
- 239000008280 blood Substances 0.000 description 11
- 210000000707 wrist Anatomy 0.000 description 10
- 238000009530 blood pressure measurement Methods 0.000 description 7
- 230000005622 photoelectricity Effects 0.000 description 7
- 210000000709 aorta Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000008602 contraction Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003205 diastolic effect Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 230000002792 vascular Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003194 forelimb Anatomy 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 210000005259 peripheral blood Anatomy 0.000 description 2
- 239000011886 peripheral blood Substances 0.000 description 2
- 210000002321 radial artery Anatomy 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 210000001715 carotid artery Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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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
- A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
-
- 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
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02108—Measuring pressure in heart or blood vessels from analysis of pulse wave characteristics
- A61B5/02125—Measuring pressure in heart or blood vessels from analysis of pulse wave characteristics of pulse wave propagation time
-
- 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
-
- 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
- A61B5/68—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
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
Abstract
A blood pressure measuring method, an intelligent heart rate earphone and a system are provided, each earplug of the intelligent heart rate earphone integrates at least one heart rate chip, the intelligent heart rate earphone is communicated with an intelligent portable terminal, and the system comprises: respectively obtaining the photoplethysmogram waves of the ears of the user and the photoplethysmogram waves of other parts of the user through the intelligent heart rate earphone; synchronously transmitting the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user to a processor in real time; and processing the photoplethysmography of the ear of the user and the photoplethysmography of other parts of the user through the processor to obtain the blood pressure value of the user. The method and the device improve the accuracy of monitoring the blood pressure value of the user and simplify the wearing mode.
Description
The application belongs to the technical field of wearable equipment, and particularly relates to a blood pressure measuring method, an intelligent heart rate earphone and an intelligent heart rate earphone system.
Background
Blood pressure is an important parameter reflecting the functions of a circulatory system of a user, and in order to avoid noise and discomfort caused by the fact that the conventional electronic sphygmomanometer pressurizes an arm through a cuff and realize continuous blood pressure measurement, the blood pressure value of the user can be obtained by adopting Pulse Wave Transmission Time (PWTT).
Pulse wave transmission time is generally obtained by simultaneously monitoring pulse waves of an Electrocardiogram (ECG) and a peripheral blood vessel (such as a radial artery) or pulse waves of any two parts of a body (such as a carotid artery and a radial artery) by using a photoplethysmography (PPG), and calculating time delay between the pulse waves, namely time required by arterial blood to be ejected from a heart and transmitted to the peripheral blood vessel. And calculating the blood pressure value of the user through a model between the pulse wave transmission time and the arterial blood pressure.
At present, health products such as a bracelet watch for monitoring blood pressure values of a user through pulse wave transmission time have the influence of the signal to noise ratio of collected photoplethysmography on the accuracy to a great extent. At present, the wrist and the corresponding finger end are often adopted to collect the photoplethysmography, and the signal-to-noise ratio of the photoplethysmography collected by the wrist is poor, which affects the accuracy of monitoring the blood pressure value of the user. Meanwhile, because the photoelectric volume pulse waves at the wrist and the finger end need to be monitored simultaneously, the wearing is very inconvenient due to the common Electrocardio (ECG) monitoring mode and the mode of the ring attached to the bracelet.
Disclosure of Invention
The application provides a blood pressure measuring method, an intelligent heart rate earphone and a system, which improve the accuracy of monitoring a blood pressure value of a user and simplify the wearing mode.
An embodiment of the present application provides a blood pressure measurement method, is applied to intelligent heart rate earphone, every earplug of intelligent heart rate earphone is integrated at least one heart rate chip, intelligent heart rate earphone and intelligent portable terminal communication include:
respectively obtaining the photoplethysmogram waves of the ears of the user and the photoplethysmogram waves of other parts of the user through the intelligent heart rate earphone;
synchronously transmitting the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user to a processor in real time;
and processing the photoplethysmography of the ear of the user and the photoplethysmography of other parts of the user through the processor to obtain the blood pressure value of the user.
Another embodiment of the present application provides an intelligent heart rate earphone for blood pressure measurement, wherein each ear plug of the intelligent heart rate earphone is integrated with at least one heart rate chip, the intelligent heart rate earphone is in communication with an intelligent portable terminal, and the intelligent heart rate earphone respectively obtains a photoplethysmogram of an ear of a user and photoplethysmogram of other parts of the user; synchronously transmitting the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user to a processor in real time; the processor processes the photoplethysmography of the user's ear and the photoplethysmography of other parts of the user to obtain a blood pressure value of the user.
Another embodiment of the present application provides a blood pressure measuring system, including foretell intelligence rhythm of the heart earphone and with the intelligent portable terminal of intelligence rhythm of the heart earphone communication, intelligence rhythm of the heart earphone will the photoelectric volume pulse wave of user's ear and the photoelectric volume pulse wave of other positions of user transmit to in real time the treater of intelligent portable terminal.
According to the embodiment of the application, the intelligent heart rate earphone obtains the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user respectively, and transmits the photoplethysmography to the processor in real time and synchronously. And the processor obtains the transmission time of the pulse wave according to the photoplethysmography of the ear of the user and the photoplethysmography of other parts of the user, and calculates the transmission time to obtain the blood pressure value of the user. Therefore, the photoelectric volume pulse wave signal-to-noise ratio of the user ear monitored by the method is higher than that of the user parts such as the wrist and the like, and the accuracy of monitoring the blood pressure value of the user is improved. Moreover, the intelligent heart rate earphone and the intelligent portable terminal are used for monitoring the blood pressure value of the user, wearing is convenient, and operation is simple.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic diagram illustrating connection between an intelligent heart rate earphone and an intelligent portable terminal for blood pressure measurement according to the present application;
FIG. 2 is a flowchart illustrating an embodiment of a method for measuring blood pressure according to the present application;
FIG. 3 is a flowchart illustrating an embodiment of step S3 of a blood pressure measurement method according to the present application;
FIG. 4 is a diagram of photoplethysmography of the user's ear and photoplethysmography of other parts of the user according to the present application;
FIG. 5 is a flowchart illustrating another embodiment of the step S3 of a blood pressure measuring method according to the present application;
FIG. 6 is a flow chart of an embodiment of a single calibration derived calculation model in a blood pressure measurement method of the present application;
FIG. 7 is a schematic diagram illustrating the use of an embodiment of the smart heart rate earphone to separately scale the computational model of the present application;
FIG. 8 is a waveform diagram of a photoplethysmogram sensed by a heart rate chip of the intelligent heart rate earphone of FIG. 2;
FIG. 9 is a schematic diagram of another embodiment of the present application in which an intelligent heart rate headset performs individual calibration to obtain a computational model;
FIG. 10 is a waveform diagram of a photoplethysmogram sensed by a heart rate chip of the intelligent heart rate earphone of FIG. 3;
FIG. 11 is a flow chart of another embodiment of a method for measuring blood pressure according to the present application;
fig. 12 is a flow chart illustrating an application scenario of the present application.
Detailed Description
This application intelligence rhythm of heart earphone obtains the photoelectricity volume pulse wave of user's ear and the photoelectricity volume pulse wave of other positions of user respectively, and will photoelectricity volume pulse wave real-time synchronization transport to treater. And the processor obtains the transmission time of the pulse wave according to the photoplethysmography of the ear of the user and the photoplethysmography of other parts of the user, and calculates the transmission time to obtain the blood pressure value of the user. Therefore, the photoelectric volume pulse wave signal-to-noise ratio of the user ear monitored by the method is higher than that of the user parts such as the wrist and the like, and the accuracy of monitoring the blood pressure value of the user is improved. Moreover, the intelligent heart rate earphone and the intelligent portable terminal are used for monitoring the blood pressure value of the user, wearing is convenient, and operation is simple.
In order to make the objects, features and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, the embodiment of the present application provides an earphone-based blood pressure measuring method, which is applied to an intelligent heart rate earphone 1, each earplug of the intelligent heart rate earphone 1 integrates at least one heart rate chip, and the intelligent heart rate earphone 1 communicates with an intelligent portable terminal 2.
The heart rate chip technology integrates corresponding hardware functional modules on a small chip according to the emission and acquisition principle of the photoplethysmography, and the photoplethysmography reflecting blood flow fluctuation is obtained by receiving the residual reflected light after absorption by a capillary vessel.
This application 1 every earplug of intelligence rhythm of heart earphone is integrated an at least heart rate chip respectively, specifically, the integrated a slice rhythm of the heart chip of every earplug, and every heart rate chip is integrated respectively the both sides of 1 every earplug of intelligence rhythm of the heart earphone.
Referring to fig. 2, the method of the present application includes:
and S1, respectively obtaining the photoplethysmogram waves of the ears of the user and the photoplethysmogram waves of other parts of the user through the intelligent heart rate earphone.
Referring to fig. 1, an earplug of the smart heart rate earphone 1 is worn on the ear, so that photoplethysmography of the ear of the user can be obtained through a heart rate chip on the earplug. The capillaries at the ear part are rich, the signal-to-noise ratio of the extracted photoplethysmogram is higher than that of other parts such as wrists, the influence of skin color, tattoo, body hair and movement is small, and the accuracy and the crowd suitability for monitoring the blood pressure value of the user based on the pulse wave transmission time can be improved by measuring the transmission time difference of the photoplethysmogram between the ear and other parts of the user.
And contacting the other earplug of the intelligent heart rate earphone 1 with other parts of the user to obtain the photoplethysmography of other parts of the user.
Specifically, since the signal-to-noise ratio of the photoplethysmography of the user's finger is better than the signal-to-noise ratio of the photoplethysmography of other parts of the user, the other earplug of the intelligent heart rate earphone 1 is contacted with the user's finger to obtain the photoplethysmography of the user's finger.
And S2, synchronously transmitting the photoplethysmogram waves of the user ear and the photoplethysmogram waves of other parts of the user to a processor in real time.
Specifically, the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user are synchronized by the intermediate processing module and then transmitted to the processor in real time.
And S3, processing the photoplethysmogram waves of the user ear and the photoplethysmogram waves of other parts of the user through the processor to obtain the blood pressure value of the user.
Specifically, the processor is disposed in the smart heart rate earphone 1 or the smart portable terminal 2.
If the processor sets up in the intelligence rhythm of the heart earphone 1, then can obtain human blood pressure value through solitary intelligence rhythm of the heart earphone, if the processor sets up in the intelligent portable terminal 2, then through with in the intelligent portable terminal of intelligence rhythm of the heart earphone communication, can obtain human blood pressure value. Therefore, the processor arranged in the intelligent heart rate earphone 1 or the intelligent portable terminal 2 can simply and conveniently realize the calculation processing of the blood pressure value of the user without changing the hardware structure of the intelligent heart rate earphone 1 or the intelligent portable terminal 2.
Referring to fig. 3, the step S3 includes:
and S31, judging whether a calculation model of the blood pressure value of the current user exists or not.
Through studies on a large population, the transmission time (PWTT) and arterial Blood Pressure (BP) of the pulse wave satisfy the following model:
BP＝a*ln(PWTT)+b，
wherein the parameters a and b are related to the vascular characteristics of each person and also to whether the measured blood pressure is systolic or diastolic.
The computational model may be stored in the processor in a pre-stored manner.
And S32, if a calculation model exists, obtaining the transmission time of the pulse wave according to the photoplethysmography pulse wave of the ear of the user and the photoplethysmography pulse waves of other parts of the user, which are sent by the intelligent heart rate earphone.
Referring to fig. 4, the application denoises the photoplethysmogram waves 101 of the user's ear and 102 of other parts of the user (e.g., fingers) by synchronously measuring the photoplethysmogram waves, and finds the valley point of each pulse wave, which corresponds to the end diastole, i.e., the moment when the contraction is about to start. The delay between the valley points of the photoplethysmogram waves 101 of the user's ear and 102 of the photoplethysmogram waves of other parts of the user (e.g., fingers) is the time difference between the transmission of the pulse waves from the aorta 3 to the ear and the transmission of the pulse waves from the aorta 3 to other parts of the user (e.g., fingers), i.e., the transmission time 103 of the pulse waves.
And S33, calculating to obtain the blood pressure value of the user according to the transmission time of the pulse wave and the calculation model.
The method and the device have the advantages that the obtained transmission time of the pulse waves is substituted into the calculation model, and therefore the monitored blood pressure value of the user is obtained according to the transmission time of the pulse waves.
Therefore, the monitored blood pressure value of the user is obtained through the calculation model of the blood pressure value of the current user, the photoplethysmogram pulse waves of the ear of the user and the photoplethysmogram pulse waves of other parts of the user, which are sent by the intelligent heart rate earphone, the calculation is simple, and the calculation accuracy is high.
If this application intelligence rhythm of heart earphone 1 passes through the earphone cord and is connected with intelligent portable terminal 2, intelligence rhythm of heart earphone 1 can be when appreciating the music, through the earphone cord will the photoelectricity volume pulse wave of user's ear and the photoelectricity volume pulse wave real-time transmission of other positions of user extremely intelligent portable terminal 2.
The intelligent portable terminal 2 passes through the earphone cord does the power supply of intelligent rhythm of the heart earphone 1, the energy of all devices such as the reflection of light of intelligent rhythm of the heart earphone 1 by intelligent portable terminal 2 provides, intelligent rhythm of the heart earphone 1 need not plus the battery. The application solves the contradiction between small size and battery capacity of the current wearable equipment.
In another specific implementation of the present application, referring to fig. 5, the step S3 further includes: and step S34, if the calculation model does not exist, obtaining the calculation model by adopting independent calibration.
Specifically, referring to fig. 6, the obtaining of the calculation model by using the individual scaling includes:
t1, a heart rate chip and a pressure sensor are arranged in the intelligent heart rate earphone, and pressure is applied to blood vessels of a user through the intelligent heart rate earphone.
And T2, sensing the photoplethysmogram of the blood vessel of the user through a heart rate chip in the intelligent heart rate earphone, and sensing the pressure value applied to the blood vessel of the user through the intelligent heart rate earphone by a pressure sensor in the intelligent heart rate earphone when the amplitude of the photoplethysmogram pulse wave is sensed to be lower than a threshold value.
T3, the pressure sensor sending the pressure value sensed at least twice to the processor.
And T4, completing blood pressure calibration of the calculation model according to the pressure values sensed at least twice by the processor.
Specifically, referring to fig. 7, the present application presses the smart heart rate headset 1 against the corresponding bone 110 by aligning it to the corresponding blood vessel 111 of the forelimb. The heart rate chip in the intelligent heart rate earphone 1 senses the change of blood volume in the blood vessel, and the pressure sensor senses the pressure value applied to the blood vessel 111 by the finger through the intelligent heart rate earphone 1. When the pressure value applied to the blood vessel 111 by the corresponding finger through the smart heart rate earphone 1 is smaller than the pressure value of the blood vessel 111 itself, the blood can normally pass through the corresponding blood vessel 111, and the photoplethysmography of the blood can be shown as 112 in fig. 8.
Referring to fig. 9, as the pressure value applied to the blood vessel 111 by the finger through the smart heart rate earphone 1 continues to increase, the corresponding blood vessel 111 becomes narrower and narrower, and the whole blood vessel 111 is completely closed until the applied pressure value is equal to the pressure value of the blood vessel 111 itself. Since the blood vessel 111 has not been filled with blood, the amplitude of the photoplethysmographic pulse wave monitored by the heart rate chip is below the threshold, i.e., becomes almost a straight line, as shown at 113 in fig. 10. The threshold value is set by a person skilled in the art according to the human body characteristics. Therefore, the pressure value sensed by the pressure sensor at this time is the monitored arterial pressure value of the blood vessel 111.
When the heart rate chip senses that the amplitude of the photoplethysmogram pulse wave of the blood vessel 111 is lower than a threshold value, the pressure sensor senses that a user passes through the pressure value applied to the blood vessel by the intelligent heart rate earphone 1, and sends the pressure value sensed at least twice to the processor to finish the calibration of the arterial blood pressure value.
Specifically, the method utilizes a processor located in the intelligent portable terminal 2 or the intelligent heart rate earphone 1 to substitute the pressure values sensed at least twice into a calculation model, and obtains the values of parameters a and B or A and B by solving an equation system, so as to finish the calibration of the arterial blood pressure value.
Consequently, this application can realize the blood pressure calibration of model between pulse wave transmission time and the arterial blood pressure through the built-in pressure sensor of intelligence heart rate earphone 1 and heart rate chip, need not other equipment, convenient operation, and can effectively reduce the calibration error, improved the degree of accuracy of calibration.
Therefore, the photoelectric volume pulse wave signal-to-noise ratio of the user ear monitored by the method is higher than that of the user parts such as the wrist and the like, and the accuracy of monitoring the blood pressure value of the user is improved. Moreover, the intelligent heart rate earphone and the intelligent portable terminal are used for monitoring the blood pressure value of the user, wearing is convenient, and operation is simple.
Intelligence rhythm of heart earphone 1 is except monitoring user's blood pressure value, can also detect user's rhythm of the heart, and the blood oxygen, numerical values such as body temperature, therefore this application intelligence rhythm of the heart earphone 1 can realize multiple user characteristic monitoring, convenient to use, easy operation.
In another specific implementation of the present application, the method, in addition to the above steps S1-S3, referring to fig. 11, further includes the steps of: and S4, storing the blood pressure value of the user into a corresponding account, and/or uploading the blood pressure value of the user to a cloud database for long-term management of the blood pressure.
Therefore, the blood pressure of the user is managed for a long time through the stored blood pressure value, the physical health condition of the user is convenient to monitor, and the method is simple to operate and convenient to use.
Corresponding to the method, referring to fig. 1, another embodiment of the present application provides an intelligent heart rate earphone 1 with a blood pressure measurement function, each earplug of the intelligent heart rate earphone 1 integrates at least one heart rate chip, and the intelligent heart rate earphone 1 is in communication with an intelligent portable terminal 2.
The heart rate chip technology integrates corresponding hardware functional modules on a small chip according to the emission and acquisition principle of the photoplethysmography, and the photoplethysmography reflecting blood flow fluctuation is obtained by receiving the residual reflected light after absorption by a capillary vessel.
This application 1 every earplug of intelligence rhythm of heart earphone is integrated an at least heart rate chip respectively, specifically, the integrated a slice rhythm of the heart chip of every earplug, and every heart rate chip is integrated respectively the both sides of 1 every earplug of intelligence rhythm of the heart earphone.
The intelligent heart rate earphone respectively obtains the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user.
Referring to fig. 1, an earplug of the smart heart rate earphone 1 is worn on the ear, so that photoplethysmography of the ear of the user can be obtained through a heart rate chip on the earplug. The capillaries at the ear part are rich, the signal-to-noise ratio of the extracted photoplethysmogram is higher than that of other parts such as wrists, the influence of skin color, tattoo, body hair and movement is small, and the accuracy and the crowd suitability for monitoring the blood pressure value of the user based on the pulse wave transmission time can be improved by measuring the transmission time difference of the photoplethysmogram between the ear and other parts of the user.
And contacting the other earplug of the intelligent heart rate earphone 1 with other parts of the user to obtain the photoplethysmography of other parts of the user.
Specifically, since the signal-to-noise ratio of the photoplethysmography of the user's finger is better than the signal-to-noise ratio of the photoplethysmography of other parts of the user, the other earplug of the intelligent heart rate earphone 1 is contacted with the user's finger to obtain the photoplethysmography of the user's finger.
And synchronously transmitting the photoplethysmography of the ear of the user and the photoplethysmography of other parts of the user to a processor in real time.
Specifically, the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user are synchronized by the intermediate processing module and then transmitted to the processor in real time.
The processor processes the photoplethysmography of the user's ear and the photoplethysmography of other parts of the user to obtain a blood pressure value of the user.
Specifically, the processor is disposed in the smart heart rate earphone 1 or the smart portable terminal 2.
If the processor sets up in the intelligence rhythm of the heart earphone 1, then can obtain human blood pressure value through solitary intelligence rhythm of the heart earphone, if the processor sets up in the intelligent portable terminal 2, then through with in the intelligent portable terminal of intelligence rhythm of the heart earphone communication, can obtain human blood pressure value. Therefore, the processor arranged in the intelligent heart rate earphone 1 or the intelligent portable terminal 2 can simply and conveniently realize the calculation processing of the blood pressure value of the user without changing the hardware structure of the intelligent heart rate earphone 1 or the intelligent portable terminal 2.
The processor processes the photoplethysmography of the user's ear and the photoplethysmography of other parts of the user to obtain a blood pressure value of the user comprises:
and judging whether a calculation model of the blood pressure value of the current user exists or not.
Through studies on a large population, the transmission time (PWTT) and arterial Blood Pressure (BP) of the pulse wave satisfy the following model:
BP＝a*ln(PWTT)+b，
wherein the parameters a and b are related to the vascular characteristics of each person and also to whether the measured blood pressure is systolic or diastolic.
The computational model may be stored in the processor in a pre-stored manner.
If a calculation model exists, the transmission time of the pulse wave is obtained according to the photoplethysmography pulse wave of the ear of the user and the photoplethysmography pulse waves of other parts of the user, which are sent by the intelligent heart rate earphone.
Referring to fig. 4, the application denoises the photoplethysmogram waves 101 of the user's ear and 102 of other parts of the user (e.g., fingers) by synchronously measuring the photoplethysmogram waves, and finds the valley point of each pulse wave, which corresponds to the end diastole, i.e., the moment when the contraction is about to start. The delay between the valley points of the photoplethysmogram waves 101 of the user's ear and 102 of the photoplethysmogram waves of other parts of the user (e.g., fingers) is the time difference between the transmission of the pulse waves from the aorta 3 to the ear and the transmission of the pulse waves from the aorta 3 to other parts of the user (e.g., fingers), i.e., the transmission time 103 of the pulse waves.
And calculating to obtain the blood pressure value of the user according to the transmission time of the pulse wave and a calculation model.
The method and the device have the advantages that the obtained transmission time of the pulse waves is substituted into the calculation model, and therefore the monitored blood pressure value of the user is obtained according to the transmission time of the pulse waves.
Therefore, the monitored blood pressure value of the user is obtained through the calculation model of the blood pressure value of the current user, the photoplethysmogram pulse waves of the ear of the user and the photoplethysmogram pulse waves of other parts of the user, which are sent by the intelligent heart rate earphone, the calculation is simple, and the calculation accuracy is high.
If this application intelligence rhythm of heart earphone 1 passes through the earphone cord and is connected with intelligent portable terminal 2, intelligence rhythm of heart earphone 1 can be when appreciating the music, through the earphone cord will the photoelectricity volume pulse wave of user's ear and the photoelectricity volume pulse wave real-time transmission of other positions of user extremely intelligent portable terminal 2.
The intelligent portable terminal 2 passes through the earphone cord does the power supply of intelligent rhythm of the heart earphone 1, the energy of all devices such as the reflection of light of intelligent rhythm of the heart earphone 1 by intelligent portable terminal 2 provides, intelligent rhythm of the heart earphone 1 need not plus the battery. The application solves the contradiction between small size and battery capacity of the current wearable equipment.
In another specific implementation of the present application, if no computational model exists, a separate scaling is used to obtain the computational model.
Specifically, referring to fig. 6, the obtaining of the calculation model by using the individual scaling includes:
t1, a heart rate chip and a pressure sensor are arranged in the intelligent heart rate earphone, and pressure is applied to blood vessels of a user through the intelligent heart rate earphone.
And T2, sensing the photoplethysmogram of the blood vessel of the user through a heart rate chip in the intelligent heart rate earphone, and sensing the pressure value applied to the blood vessel of the user through the intelligent heart rate earphone by a pressure sensor in the intelligent heart rate earphone when the amplitude of the photoplethysmogram pulse wave is sensed to be lower than a threshold value.
T3, the pressure sensor sending the pressure value sensed at least twice to the processor.
And T4, completing blood pressure calibration of the calculation model according to the pressure values sensed at least twice by the processor.
Specifically, referring to fig. 7, the present application presses the smart heart rate headset 1 against the corresponding bone 110 by aligning it to the corresponding blood vessel 111 of the forelimb. The heart rate chip in the intelligent heart rate earphone 1 senses the change of blood volume in the blood vessel, and the pressure sensor senses the pressure value applied to the blood vessel 111 by the finger through the intelligent heart rate earphone 1. When the pressure value applied to the blood vessel 111 by the corresponding finger through the smart heart rate earphone 1 is smaller than the pressure value of the blood vessel 111 itself, the blood can normally pass through the corresponding blood vessel 111, and the photoplethysmography of the blood can be shown as 112 in fig. 8.
Referring to fig. 9, as the pressure value applied to the blood vessel 111 by the finger through the smart heart rate earphone 1 continues to increase, the corresponding blood vessel 111 becomes narrower and narrower, and the whole blood vessel 111 is completely closed until the applied pressure value is equal to the pressure value of the blood vessel 111 itself. Since the blood vessel 111 has not been filled with blood, the amplitude of the photoplethysmographic pulse wave monitored by the heart rate chip is below the threshold, i.e., becomes almost a straight line, as shown at 113 in fig. 10. The threshold value is set by a person skilled in the art according to the human body characteristics. Therefore, the pressure value sensed by the pressure sensor at this time is the monitored arterial pressure value of the blood vessel 111.
When the heart rate chip senses that the amplitude of the photoplethysmogram pulse wave of the blood vessel 111 is lower than a threshold value, the pressure sensor senses that a user passes through the pressure value applied to the blood vessel by the intelligent heart rate earphone 1, and sends the pressure value sensed at least twice to the processor to finish the calibration of the arterial blood pressure value.
Specifically, the method utilizes a processor located in the intelligent portable terminal 2 or the intelligent heart rate earphone 1 to substitute the pressure values sensed at least twice into a calculation model, and obtains the values of parameters a and B or A and B by solving an equation system, so as to finish the calibration of the arterial blood pressure value.
Consequently, this application can realize the blood pressure calibration of model between pulse wave transmission time and the arterial blood pressure through the built-in pressure sensor of intelligence heart rate earphone 1 and heart rate chip, need not other equipment, convenient operation, and can effectively reduce the calibration error, improved the degree of accuracy of calibration.
Therefore, the photoelectric volume pulse wave signal-to-noise ratio of the user ear monitored by the method is higher than that of the user parts such as the wrist and the like, and the accuracy of monitoring the blood pressure value of the user is improved. Moreover, the intelligent heart rate earphone and the intelligent portable terminal are used for monitoring the blood pressure value of the user, wearing is convenient, and operation is simple.
Intelligence rhythm of heart earphone 1 is except monitoring user's blood pressure value, can also detect user's rhythm of the heart, and the blood oxygen, numerical values such as body temperature, therefore this application intelligence rhythm of the heart earphone 1 can realize multiple user characteristic monitoring, convenient to use, easy operation.
In another specific implementation of the present application, the smart heart rate earphone 1 stores the blood pressure value of the user in a corresponding account, and/or uploads the blood pressure value of the user to a cloud database for long-term management of blood pressure.
Therefore, the blood pressure of the user is managed for a long time through the stored blood pressure value, the physical health condition of the user is convenient to monitor, and the method is simple to operate and convenient to use.
Corresponding to the above method, referring to fig. 1, the present application further provides a blood pressure measuring system, which includes the above-mentioned intelligent heart rate earphone 1 and an intelligent portable terminal 2 in communication with the intelligent heart rate earphone, where the intelligent heart rate earphone 1 transmits the photoplethysmogram of the user's ear and the photoplethysmogram of other parts of the user to a processor of the intelligent portable terminal 2 in real time and synchronously.
The implementation of the present application is further described below by a specific application scenario of the present application.
Referring to fig. 1, each earplug of the intelligent heart rate earphone 1 of the present application is respectively integrated with at least one heart rate chip, and is connected with the intelligent portable terminal 2 through an earphone cord.
This application intelligence rhythm of heart earphone 1 is integrated two rhythm of the heart chips, just two rhythm of the heart chips are integrated respectively two earplugs of intelligence rhythm of the heart earphone 1, one of them earplug pressure sensor that still integrates.
Referring to fig. 12, the flow of the application scenario includes:
1201. the intelligent heart rate earphone 1 is inserted into an earphone jack of the intelligent portable terminal 2.
1202. One earplug of the intelligent heart rate earphone 1 obtains the photoplethysmogram of the ear of the user, and the other earplug obtains the photoplethysmogram of the finger of the user.
1203. The photoplethysmogram of the user's ear and the photoplethysmogram of the user's finger are transmitted to the intelligent portable terminal 2 through the earphone cable in real time.
The intelligent portable terminal 2 passes through the earphone cord does the power supply of intelligent rhythm of the heart earphone 1, the energy of all devices such as the reflection of light of intelligent rhythm of the heart earphone 1 by intelligent portable terminal 2 provides, intelligent rhythm of the heart earphone 1 need not plus the battery. The application solves the contradiction between small size and battery capacity of the current wearable equipment.
1204. The smart portable terminal 2 determines whether or not a sufficient photoplethysmogram is obtained.
1205. And if the sufficient photoplethysmography is obtained, judging whether the intelligent portable terminal 2 prestores a calculation model of the transmission time of the pulse wave and the blood pressure value of the user.
Through studies on a large population, the transmission time (PWTT) and arterial Blood Pressure (BP) of the pulse wave satisfy the following model:
BP＝a*ln(PWTT)+b，
wherein the parameters a and b are related to the vascular characteristics of each person and also to whether the measured blood pressure is systolic or diastolic.
1206. If the calculation model does not exist, determining the parameter a and the parameter b through independent calibration, thereby obtaining the calculation model of the transmission time of the pulse wave and the blood pressure value of the user.
The calibration method is that the blood pressure value of the user is changed by changing the body position of the monitored user, the transmission time of the pulse wave corresponding to the blood pressure value of the user before and after the body position of the monitored user is changed is obtained, and the parameters a and b can be determined by solving an equation set.
Specifically, as shown in fig. 6, the calculation model is obtained by independent calibration, and the earplug integrating the heart rate chip and the pressure sensor of the intelligent heart rate earphone 1 is used for independent calibration, so that the specific calibration method is not repeated.
1207. If a calculation model exists, or a calculation model is obtained by using separate calibration, the transmission time of the pulse wave is obtained by using the photoplethysmography pulse wave.
Referring to fig. 4, the application denoises the photoplethysmogram waves 101 of the user's ear and 102 of other parts of the user (e.g., fingers) by synchronously measuring the photoplethysmogram waves, and finds the valley point of each pulse wave, which corresponds to the end diastole, i.e., the moment when the contraction is about to start. The delay between the valley points of the photoplethysmogram waves 101 of the user's ear and 102 of the photoplethysmogram waves of other parts of the user (e.g., fingers) is the time difference between the transmission of the pulse waves from the aorta 3 to the ear and the transmission of the pulse waves from the aorta 3 to other parts of the user (e.g., fingers), i.e., the transmission time 103 of the pulse waves.
1208. And substituting the transmission time of the pulse wave into the calculation model of each user to obtain the monitored blood pressure value of the user.
1209. And storing the blood pressure value of the user in a corresponding account in the intelligent portable terminal 2 or uploading the blood pressure value of the user to a cloud-end database so as to carry out long-term management on the blood pressure.
Therefore, the photoelectric volume pulse wave signal-to-noise ratio of the user ear monitored by the method is higher than that of the user parts such as the wrist and the like, and the accuracy of monitoring the blood pressure value of the user is improved. Moreover, the intelligent heart rate earphone and the intelligent portable terminal are used for monitoring the blood pressure value of the user, wearing is convenient, and operation is simple.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication link may be an indirect coupling or communication link of some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In view of the above description of the blood pressure measuring method, the intelligent heart rate earphone and the intelligent portable terminal provided by the present application, those skilled in the art will have changes in the detailed implementation and application scope according to the ideas of the embodiments of the present application.
Claims (8)
1. An intelligent heart rate earphone with a blood pressure measuring function is characterized in that each earplug of the intelligent heart rate earphone is integrated with at least one heart rate chip and a pressure sensor, each heart rate chip is integrated on one side of the earplug, the intelligent heart rate earphone is communicated with an intelligent portable terminal,
the intelligent heart rate earphone respectively obtains photoplethysmography of ears of a user and photoplethysmography of other parts of the user;
synchronously transmitting the photoplethysmography of the ears of the user and the photoplethysmography of other parts of the user to a processor in real time;
the processor processes the photoplethysmogram pulse waves of the user ears and the photoplethysmogram pulse waves of other parts of the user through a calculation model to obtain a blood pressure value of the user;
the calculation model is obtained through independent calibration of the heart rate chip and the pressure sensor.
2. The smart heart rate earphone according to claim 1, wherein the obtaining photoplethysmography at other locations of the user is obtaining photoplethysmography at a finger of the user.
3. The intelligent heart rate earphone of claim 1 wherein the intelligent portable terminal provides power to the intelligent heart rate earphone via an earphone cord.
4. The smart heart rate earphone of claim 1 wherein the processing, by the processor, the photoplethysmography pulse waves of the user's ear and photoplethysmography pulse waves of other parts of the user to obtain the user blood pressure value comprises:
judging whether a calculation model of the blood pressure value of the current user exists or not;
if a calculation model exists, obtaining the transmission time of the pulse wave according to the photoplethysmography pulse wave of the ear of the user and the photoplethysmography pulse waves of other parts of the user, which are sent by the intelligent heart rate earphone;
and calculating to obtain the blood pressure value of the user according to the transmission time of the pulse wave and a calculation model.
5. The intelligent heart rate headset of claim 1, wherein the scaling of the computational model comprises:
the intelligent heart rate earphone is internally provided with a heart rate chip and a pressure sensor, and pressure is applied to blood vessels of a user through the intelligent heart rate earphone;
sensing a photoplethysmogram of a blood vessel of a user through a heart rate chip in the intelligent heart rate earphone, wherein when the amplitude of the photoplethysmogram is sensed to be lower than a threshold value, a pressure sensor in the intelligent heart rate earphone senses a pressure value applied to the blood vessel of the user through the intelligent heart rate earphone;
the pressure sensor sends the pressure values sensed at least twice to the processor;
and completing blood pressure calibration of the calculation model according to the pressure values sensed at least twice by the processor.
6. The intelligent heart rate earphone of claim 1 further comprising:
and storing the blood pressure value of the user in a corresponding account or uploading the blood pressure value of the user to a cloud database so as to perform long-term management on the blood pressure.
7. The smart heart rate earphone of claim 1 wherein the processor is disposed in the smart heart rate earphone or the smart portable terminal.
8. A blood pressure measuring system, comprising the smart heart rate earphone according to claims 1-7 and a smart portable terminal in communication with the smart heart rate earphone, wherein the smart heart rate earphone transmits the photoplethysmography of the user's ear and the photoplethysmography of other parts of the user to the processor of the smart portable terminal synchronously in real time.
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| PCT/CN2016/096647 WO2018035792A1 (en) | 2016-08-25 | 2016-08-25 | Blood pressure measurement method, intelligent heart rate monitor earphone, and system |
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| CN109965862B (en) * | 2019-04-16 | 2022-08-02 | 重庆大学 | Construction method of sleeveless long-time continuous blood pressure non-invasive monitoring model |
| CN110584708A (en) * | 2019-09-26 | 2019-12-20 | 重庆琨大医疗科技有限公司 | Portable intelligent ultrasonic blood pressure monitoring system based on ear vagus nerve stimulation |
| CN111093486B (en) * | 2019-11-25 | 2022-09-16 | 深圳市汇顶科技股份有限公司 | Biological feature detection method, biological feature detection device and electronic device |
| CN112426141B (en) * | 2020-12-09 | 2024-03-22 | 深圳市汇顶科技股份有限公司 | Blood pressure detection device and electronic device |
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| US5755669A (en) * | 1997-04-30 | 1998-05-26 | Nihon Kohden Corporation | Blood pressure monitoring apparatus |
| CN2824836Y (en) * | 2005-01-19 | 2006-10-11 | 捷飞科研有限公司 | Head-mounted physiological parameter measuring device |
| WO2006100676A2 (en) * | 2005-03-21 | 2006-09-28 | Health-Smart Limited | System for continuous blood pressure monitoring |
| CN101032395A (en) * | 2006-03-08 | 2007-09-12 | 香港中文大学 | Blood pressure measuring method based on characteristic parameter of photoelectricity plethysmography of signal cycle |
| US7390302B2 (en) * | 2006-08-16 | 2008-06-24 | The General Electric Company | Method and system of determining NIBP target inflation pressure using an SpO2 plethysmograph signal |
| US8463347B2 (en) * | 2009-09-30 | 2013-06-11 | Nellcor Puritan Bennett Ireland | Systems and methods for normalizing a plethysmograph signal for improved feature analysis |
| CN204813865U (en) * | 2015-01-26 | 2015-12-02 | 周常安 | Wearable electrocardiograph detection apparatus |
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