CN116919367A

CN116919367A - Blood pressure measurement method and device

Info

Publication number: CN116919367A
Application number: CN202210334791.6A
Authority: CN
Inventors: 王兴源; 李宏宝
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2023-10-24

Abstract

The application provides a blood pressure measuring method and a blood pressure measuring device, wherein the method comprises the following steps: acquiring pressure shock waves of a user; detecting a suppression starting point based on the obtained pressure oscillation wave, wherein the pressure corresponding to the pressure oscillation wave obtained when the starting point is suppressed does not reach the average arterial pressure; prompting a user to close when the inhibition starting point is detected; prompting the user to breathe normally when the suppression end point is detected; the moment when the inhibition end point is detected is positioned after the pressure corresponding to the pressure shock wave reaches the mean arterial pressure; the mean arterial pressure is determined based on the pressure shock wave from the start point of suppression to the end point of suppression. By implementing the embodiment of the application, the accuracy of blood pressure measurement can be improved.

Description

Blood pressure measurement method and device

Technical Field

The embodiment of the application relates to a terminal technology, in particular to a blood pressure measuring method and device.

Background

Blood pressure is an important physiological parameter of a human body and can reflect the functional conditions of the heart and blood vessels of the human body, so that the blood pressure can be clinically used as the basis for diagnosing diseases and guiding health.

Currently, blood pressure measurement methods mainly include a korotkoff sound method, an oscillometric method, and a pulse wave propagation velocity (PTT) based method. The oscillography is a technology widely adopted by various blood pressure meters in the market at present, and the principle is that when the cuff is inflated, the air pressure sensor in the cuff collects pressure oscillation waves in the inflatable cuff, when the pressure in the cuff reaches the mean arterial pressure, the amplitude of the pressure oscillation waves reaches the maximum, and the arterial blood pressure value of a human body can be obtained by using a specific calculation method for the pressure oscillation waves.

However, when measuring blood pressure by oscillography, respiration may interfere with pressure shock waves, causing deviation in blood pressure measurement and even failure of blood pressure measurement. Because the interference of respiration on the signal presents quasi-sinusoidal fluctuation and has superposition on the signal, if the wave crest of the respiration wave is superposed with the pressure shock wave, the wave crest shift and amplitude change distortion of the pressure shock wave can be caused, and the characteristic extraction deviation and even the characteristic extraction failure are caused.

How to improve the accuracy of blood pressure measurement is the current and future research direction.

Disclosure of Invention

The application provides a blood pressure measuring method and a blood pressure measuring device, wherein the method can prompt a user to close before and after obtaining pressure shock waves corresponding to average arterial pressure so as to obtain the pressure shock waves without respiratory interference, thereby obtaining the blood pressure value of the user based on the pressure shock waves.

In a first aspect, an embodiment of the present application provides a blood pressure measurement method, including:

acquiring pressure shock waves of a user;

detecting a suppression starting point based on the obtained pressure oscillation wave, wherein the pressure corresponding to the pressure oscillation wave obtained when the starting point is suppressed does not reach the average arterial pressure;

Prompting a user to close when the inhibition starting point is detected;

prompting the user to breathe normally when the suppression end point is detected; the moment when the inhibition end point is detected is positioned after the pressure corresponding to the pressure shock wave reaches the mean arterial pressure;

the mean arterial pressure is determined based on the pressure shock wave from the start point of suppression to the end point of suppression.

By implementing the embodiment of the application, the electronic equipment can detect the inhibition starting point in the process of acquiring the pressure shock wave and prompt a user to close when detecting the inhibition starting point; and detecting the inhibition end point, and prompting the user to breathe normally when the inhibition end point is detected. Because the inhibition starting point and the inhibition ending point are positioned before and after the mean arterial pressure, the user can avoid respiratory interference of pressure shock waves corresponding to the obtained mean arterial pressure when the inhibition starting point and the inhibition ending point are closed, so that the electronic equipment can obtain accurate pressure shock waves corresponding to the mean arterial pressure, and further, the electronic equipment can obtain accurate mean arterial pressure based on the pressure shock waves from the inhibition starting point to the inhibition ending point. It can be understood that the detection of the start point of suppression is the determination of the moment of prompting the user to close his breath, and the detection of the end point of suppression is the determination of the moment of prompting the user to breathe normally.

It should be noted that, the above-mentioned electronic device may be a blood pressure measurement device, such as a desk-top blood pressure meter, a blood pressure measurement watch, etc., and the blood pressure measurement device may use its own structure, such as an air bag, an air pump, a pressure sensor, etc., to collect pressure shock waves of a user; the electronic equipment can be terminal equipment such as a mobile phone, a tablet, a notebook and the like, and the pressure shock wave of a user is obtained through equipment capable of collecting the pressure shock wave; the embodiment of the application does not limit the specific type of the electronic equipment.

Therefore, the method can prompt the user to close the air before and after the pressure shock waves corresponding to the mean arterial pressure are obtained by detecting the inhibition starting point and the inhibition ending point which are positioned before and after the mean arterial pressure, so that the pressure shock waves without respiratory interference are obtained, and the blood pressure value of the user is obtained based on the pressure shock waves.

With reference to the first aspect, in one possible implementation manner, the suppressing the pressure corresponding to the pressure oscillation wave at the start point is greater than a preset pressure value, before detecting the start point based on the obtained pressure oscillation wave, includes:

and drawing an envelope curve based on the obtained pressure shock wave, wherein the moment when the inhibition starting point is detected is the moment when the slope of the envelope curve is the extremum.

By implementing the embodiment of the application, the electronic equipment can draw the envelope curve based on the obtained pressure shock wave when the pressure shock wave is obtained; and detecting a suppression starting point based on the slope of the envelope curve and the pressure corresponding to the pressure shock wave. The method can judge the position of the suppression starting point based on the relation between the slope of the envelope curve and the suppression starting point.

With reference to the first aspect, in one possible implementation manner, a first ratio of pressure corresponding to the pressure oscillation wave acquired when the start point is suppressed to the maximum value of pressurization is provided.

By implementing the embodiment of the application, the electronic equipment can detect the inhibition starting point based on the ratio relation between the pressure corresponding to the obtained pressure shock wave and the maximum pressurizing value when the pressure shock wave is obtained, and can determine that the inhibition starting point is detected when the ratio between the pressure corresponding to the obtained pressure shock wave and the maximum pressurizing value is the second ratio.

The maximum pressurizing value is the pressure corresponding to the pressure shock wave at the end of pressurizing, and can be obtained by prediction based on the obtained pressure shock wave; the first ratio is a preset value.

The maximum value of pressurization varies from user to user. In a possible implementation manner, the embodiment of the application can also count the relation between the pressure corresponding to the pressure shock wave and the maximum value of the pressurization when the starting point is restrained through sample data, so that the first ratio is determined based on the relation between the pressure corresponding to the pressure shock wave and the maximum value of the pressurization when the starting point is restrained.

With reference to the first aspect, in one possible implementation manner, before detecting the suppression start point, the method includes:

extracting signal characteristics from the obtained pressure shock wave;

based on the signal characteristics, obtaining a pressurizing maximum value through a regression relation between the signal characteristics of the pressure shock wave and the pressurizing maximum value; the regression relationship is based on the signal characteristics of the pressure shock wave of the sample user and the maximum value of the pressurization of the sample user.

By implementing the embodiment of the application, the electronic equipment can predict the pressurizing maximum value before detecting the inhibiting starting point based on the ratio relation between the pressure corresponding to the obtained pressure shock wave and the pressurizing maximum value.

In one possible implementation, the signal characteristic may be any one of a rate of change of pressure, a ratio of a current pressure to a historical maximum pressure.

With reference to the first aspect, in one possible implementation manner, the pressure corresponding to the pressure shock wave acquired at the end point is suppressed to be a second ratio to the maximum value of pressurization.

By implementing the embodiment of the application, the electronic equipment can detect the inhibition end point based on the ratio relation between the pressure corresponding to the obtained pressure shock wave and the maximum pressure when the pressure shock wave is obtained, and can determine that the inhibition end point is detected when the ratio between the pressure corresponding to the obtained pressure shock wave and the maximum pressure is the second ratio.

It should be noted that, in the embodiment of the present application, the relationship between the pressure corresponding to the pressure shock wave and the maximum value of the pressurization at the end point of the suppression is calculated through the sample data, and further, the second ratio is determined through the relationship between the pressure corresponding to the pressure shock wave and the maximum value of the pressurization at the end point of the suppression.

With reference to the first aspect, in one possible implementation manner, a duration from the suppression start point to the suppression end point is a preset duration.

In one possible implementation manner, the preset duration may be obtained based on statistics in sample data, for example, positions of a suppression start point and a suppression end point are marked in a plurality of sample shock waves, so that duration from the suppression start point to the suppression end point in the plurality of sample shock waves is counted; and determining a preset time length based on the statistical result.

With reference to the first aspect, in one possible implementation manner, detecting the suppression start point based on the acquired pressure oscillation wave includes:

detecting the respiratory disturbance degree based on the obtained pressure shock wave;

and detecting a suppression starting point based on the obtained pressure shock wave when the respiration interference degree is detected to be strong interference.

By implementing the embodiment of the application, the electronic equipment can detect the respiratory disturbance degree before detecting the inhibition starting point; and detecting the inhibition starting point when the respiration interference degree of the user is determined to be strong interference. By detecting the respiratory disturbance degree, the method can avoid executing detection of the inhibition starting point and the inhibition ending point and prompting the operation of the user when the respiratory disturbance of the user is not strong, avoid unnecessary operation and save the electric quantity of the electronic equipment.

With reference to the first aspect, in one possible implementation manner, detecting a respiratory disturbance degree based on the acquired pressure oscillation wave includes:

inputting the obtained pressure shock waves into an interference identification model to obtain a detection result of the respiratory interference degree;

the interference recognition model is obtained by training a label based on the respiration interference degree of the sample pressure shock wave which is input by the sample pressure shock wave.

and when the signal intensity of the low-frequency signal in the obtained pressure shock wave is higher than a preset threshold value, obtaining a detection result of the respiratory disturbance degree as strong disturbance.

With reference to the first aspect, in one possible implementation manner, the prompting manner for prompting the user to close the breath and/or breathe normally includes at least one of display, voice broadcast and vibration.

In one possible implementation, the prompting means for prompting the user to close and/or breathe normally includes any combination of display, voice broadcast and vibration.

By implementing the embodiment of the application, the electronic equipment can prompt the user to stop breathing and breathe normally in various prompting modes, and the method is not limited herein.

In a second aspect, embodiments of the present application provide a blood pressure measurement device comprising a bladder, an air pump, a pressure sensor, one or more processors, memory, and one or more computer programs;

the air pump is used for inflating the air bag, and the pressure sensor is used for acquiring pressure shock waves from the air bag; the one or more computer programs are stored in the memory, the one or more computer programs comprising instructions, which when executed by the blood pressure measurement device, cause the blood pressure measurement device to perform:

acquiring pressure shock waves of a user;

prompting a user to close when the inhibition starting point is detected;

With reference to the second aspect, in one possible implementation manner, the blood pressure measurement device performs acquiring a pressure shock wave of a user, and specifically includes:

The control air pump is used for inflating the air bag;

in the inflation process, pressure shock waves are obtained from the air bag through the pressure sensor, and the pressure shock waves of the user are obtained.

With reference to the second aspect, in one possible implementation manner, the pressure corresponding to the pressure shock wave acquired when the start point is suppressed is greater than a preset pressure value, and before the start point is detected based on the acquired pressure shock wave, the blood pressure measurement device is further configured to perform:

With reference to the second aspect, in one possible implementation manner, a first ratio is a pressure corresponding to the pressure shock wave obtained when the start point is suppressed to a maximum value of pressurization.

With reference to the second aspect, in a possible implementation manner, before detecting the inhibition start point, the blood pressure measurement device is further configured to perform:

extracting signal characteristics from the obtained pressure shock wave;

With reference to the second aspect, in one possible implementation manner, the pressure corresponding to the pressure shock wave acquired at the end point is suppressed to be a second ratio to the maximum value of pressurization.

With reference to the second aspect, in one possible implementation manner, a duration from the suppression start point to the suppression end point is a preset duration.

With reference to the second aspect, in one possible implementation manner, the blood pressure measurement device performs detection of a suppression start point based on the acquired pressure shock wave, and specifically includes:

With reference to the second aspect, in one possible implementation manner, the blood pressure measurement device performs detection of a respiratory disturbance degree based on the acquired pressure shock wave, and specifically includes:

With reference to the second aspect, in one possible implementation manner, the prompting manner for prompting the user to close the breath and/or breathe normally includes at least one of display, voice broadcast and vibration.

In a third aspect, an embodiment of the present application provides an electronic device, including one or more functional modules, where the one or more functional modules are configured to perform a blood pressure measurement method according to any one of the possible implementations of the first aspect.

In a fourth aspect, the present application provides a computer storage medium comprising computer instructions which, when run on an electronic device, cause a communication apparatus to perform the blood pressure measurement method of any one of the possible implementations of the first aspect.

In a fifth aspect, the application provides a computer program product for, when run on a computer, causing the computer to perform the blood pressure measurement method of any of the possible implementations of the first aspect.

In a sixth aspect, the present application provides a chip comprising: a processor and an interface, the processor and the interface cooperating with each other such that the chip performs the blood pressure measurement method in any one of the possible implementations of the first aspect.

It will be appreciated that the electronic device provided in the third aspect, the computer readable storage medium provided in the fourth aspect, the computer program product provided in the fifth aspect, and the chip provided in the sixth aspect are all configured to perform the method provided by the embodiment of the present application. Therefore, the advantages achieved by the method can be referred to as the advantages of the corresponding method, and will not be described herein.

Drawings

FIG. 1 is a schematic diagram of a pressure shock wave when measuring blood pressure by an oscillometric method according to an embodiment of the present application;

FIG. 2 is a schematic diagram of pressure shock wave distortion caused by respiratory disturbance according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a blood pressure measuring device according to an embodiment of the present application;

FIG. 4 is a schematic view of a wristwatch for blood pressure measurement according to an embodiment of the present application;

FIG. 5 is a schematic flow chart of a blood pressure measurement method according to an embodiment of the present application;

FIG. 6 is a flowchart of another blood pressure measurement method according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a wristwatch for measuring blood pressure worn by a user according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a blood pressure measurement watch according to an embodiment of the present application for prompting a user;

FIG. 9 is a schematic diagram of the position of a pressure shock wave at the start point and the end point of the suppression according to the embodiment of the present application;

FIG. 10 is a schematic diagram of another wristwatch for measuring blood pressure according to an embodiment of the present application;

fig. 11 is a schematic hardware structure of an electronic device 100 according to an embodiment of the present application;

fig. 12 is a software block diagram of an electronic device 100 according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and furthermore, in the description of the embodiments of the present application, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The term "User Interface (UI)" in the following embodiments of the present application is a media interface for interaction and information exchange between an application program or an operating system and a user, which enables conversion between an internal form of information and a form acceptable to the user. The user interface is a source code written in a specific computer language such as java, extensible markup language (extensible markup language, XML) and the like, and the interface source code is analyzed and rendered on the electronic equipment to finally be presented as content which can be identified by a user. A commonly used presentation form of the user interface is a graphical user interface (graphic user interface, GUI), which refers to a user interface related to computer operations that is displayed in a graphical manner. It may be a visual interface element of text, icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, etc., displayed in a display of the electronic device.

Blood pressure is an important physiological parameter of a human body, can reflect the functional conditions of the heart and blood vessels of the human body, and can be clinically used for diagnosing diseases and guiding health. Currently, noninvasive blood pressure measurement methods mainly comprise a Korotkoff sound method, an oscillometric method and a pulse wave propagation velocity-based method.

The oscillometric method is a widely adopted technology for various blood pressure meters in the market at present, and the principle is that when the cuff is inflated, the air pressure sensor in the cuff collects pressure shock waves in the inflated cuff, when the pressure in the cuff reaches the mean arterial pressure, the amplitude of the pressure shock waves reaches the maximum, and the arterial blood pressure value of a human body can be obtained by using a specific calculation method for the pressure shock waves.

The cuff is bound on an arm, the cuff is inflated automatically, the cuff stops being pressurized after reaching a certain pressure (30 to 50mmHg higher than the contraction pressure in normal times) and begins to deflate, when the air pressure reaches a certain degree, blood flow can pass through a blood vessel, and certain oscillation waves exist, the oscillation waves are transmitted to a pressure sensor through an air pipe, and the pressure sensor can detect the pressure and fluctuation in the measured cuff in real time. Continuously deflating, and the oscillation wave is bigger and bigger. The pressure sensor detects pressure and fluctuation of the pressure sensor is smaller and smaller as the cuff and the arm are in loose contact. The time of fluctuation is selected as a reference point, and based on the reference point, the forward hunting is the fluctuation point with the peak value of 0.45, the forward hunting is the fluctuation point with the peak value of 0.75, the backward hunting is the fluctuation point with the peak value of 0.75, the pressure corresponding to the point is the diastolic pressure, and the pressure corresponding to the fluctuation point is the average pressure.

Referring to fig. 1, fig. 1 is a schematic diagram of an oscillometric method for measuring blood pressure according to an embodiment of the present application. The abscissa in the coordinate axis shown in fig. 1 is time, the ordinate is pressure, and the waveform of the upper half of fig. 1 is the waveform of the acquired pressure shock wave; the waveform of the lower half of fig. 1 is a waveform of a pressure oscillation wave filtering out a low-frequency signal. The blood pressure of the user can be obtained based on the pressure oscillation wave, as shown in fig. 1, when the amplitude of the pressure oscillation wave is maximum, the average blood pressure (mean blood pressure, MBP) corresponds to the systolic pressure (systolic blood pressure, SBP) being located before the average blood pressure and the diastolic pressure (diastolic blood pressure, DBP) being located after the average blood pressure.

However, when oscillometric methods measure blood pressure, respiration may interfere with pressure shock waves, which may cause deviation of blood pressure measurement and even failure of blood pressure measurement. The signal is superimposed as the respiratory disturbance presents quasi-sinusoidal fluctuations. If the respiratory trough is overlapped with the pressure shock wave crest, the pressure shock wave crest may be lost. If the pressure shock wave is superimposed on the respiratory wave peak, the pressure shock wave peak shift and amplitude change distortion may be caused. Thus, respiration interferes with the pressure shock wave, causing deviation in feature extraction and even failure in feature extraction.

Referring to fig. 2, fig. 2 is a schematic diagram illustrating distortion of pressure shock waves caused by respiratory disturbance according to an embodiment of the present application. As shown in fig. 2, the pressure oscillation wave is distorted by peak shift and amplitude variation.

Two exemplary methods of suppressing respiratory disturbances in blood pressure measurement are described below.

The method comprises the following steps: respiratory disturbances may be suppressed by filtering methods including digital filtering and hardware filtering. Because the hardware filtering needs a capacitance-resistance network with high precision, if the resistance value has certain deviation, the deviation of the frequency during filtering can be caused, and the deviation of a filtering wave band is caused; therefore, digital filtering is currently used for filtering, and various filtering algorithms are available, including filtering methods such as frequency domain filtering, homomorphic filtering, wavelet ridge and the like.

Taking the frequency domain filtering method using more as an example: the respiratory frequency of a person is generally 12-20 times per minute when the person is at rest, namely the respiratory wave frequency is below 0.1Hz, and after high-pass filtering of 0.5Hz, the respiratory interference cannot be completely eliminated, and the influence of the respiratory interference on pressure shock waves still exists. And, the use of filtering also loses the pressure shock wave information of low frequency, causes the information loss of signal. Since the influence of respiratory disturbance on pressure shock waves cannot be completely eliminated by using the filtering method, calculation deviation still exists when the filtered signal is subjected to blood pressure calculation.

The second method is as follows: respiratory disturbances can be suppressed by respiratory guidance. The sphygmomanometer guides a user to adjust breathing along with a certain rhythm through a breathing indicator lamp or other prompts, and stabilizes the blood pressure, so that errors in the blood pressure measurement process are reduced. Although respiratory guidance can reduce the blood pressure bias caused by the fluctuation of the state to some extent, the influence of respiratory disturbance on blood pressure measurement cannot be eliminated. At the same time, the user may increase the amplitude of the breath by adjusting the breath, which in turn aggravates the respiratory disturbance.

In summary, the above blood pressure measurement method still has the problem of inaccurate measurement results due to respiration.

In order to solve the above-mentioned problems, the following embodiments of the present application provide a blood pressure measurement method, in which a user may be prompted to close before and after obtaining a pressure shock wave corresponding to an average arterial pressure, so as to obtain a pressure shock wave without respiratory disturbance, so that a blood pressure value of the user is obtained based on the pressure shock wave, and the method may improve accuracy of blood pressure measurement. For specific implementation, reference may be made to the related description of the following embodiments, which are not repeated here.

The blood pressure measurement method provided by the embodiment of the application can be applied to electronic equipment, wherein the electronic equipment can be wearable equipment (such as a watch), a desk type sphygmomanometer, a mobile phone, a tablet personal computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (personal digital assistant, PDA) and the like, and the embodiment of the application does not limit the specific type of the electronic equipment.

By way of example, but not limitation, when the electronic device is a wearable device, the wearable device may also be a generic name for applying wearable technology to intelligently design daily wear, developing wearable devices, such as glasses, gloves, watches, apparel, shoes, and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device comprises full functions, large size and complete or partial functions which can be realized independent of a smart phone, such as a smart watch or smart glasses, and is only focused on certain application functions, and needs to be matched with other devices such as the smart phone for use, such as various smart bracelets, smart watches, smart jewelry and the like for physical sign monitoring.

The embodiments of the present application may be applied to any portable device such as a wearable device, where exemplary embodiments of the portable device include, but are not limited to, a portable terminal device that carries iOS, android, microsoft or other operating systems. The wearable device may be, for example, an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, an artificial intelligence (artificial intelligence, AI) device, or the like, and the type of the wearable device is not specifically limited in the embodiments of the present application. The wearable device can detect the blood pressure of a user by means of the wearable characteristic of the wearable device.

The following illustrates an electronic device according to an embodiment of the present application, which may specifically be the blood pressure measurement device of fig. 3 or fig. 4, where the blood pressure measurement device according to the embodiment of the present application may be applied to the field of wearable medical devices, daily monitoring, and the like.

Fig. 3 schematically illustrates a blood pressure measuring device according to an embodiment of the present application. As shown in fig. 3, the blood pressure measuring device 10 includes:

the air bag 101 stores air inflated by the air pump and surrounds and fits the arm of the user, and for example, the air bag 101 may be worn on the wrist of the user.

The air pump 102 is communicated with the air bag 101 and is used for inflating the air bag 101, and the air pump 102 can be a miniaturized air pump, can be built in the air bag 101 and can be fixed on the outer wall of the air bag 101.

The pressure sensor 103 is disposed inside the air bag 101, and is used for detecting the pressure change in the air bag 101 and transmitting the relevant measurement data to the main control module 104.

The main control module 104 is electrically connected with the air pump 102 and the pressure sensor 103 respectively, and is used for controlling the air pump 102 to inflate the air bag 101 and simultaneously receiving data measured by the pressure sensor 103. Alternatively, the master control module 104 may be a micro control unit (microcontroller unit, MCU).

In the embodiment of the present application, the main control module 104 is configured to control the air pump 102 and the pressure sensor 103 to perform the blood pressure measurement method provided in the embodiment of the present application, for example, the main control module 104 may control the air pump to inflate the air bag, and simultaneously obtain the pressure shock wave in the air bag through the pressure sensor, so as to obtain the pressure shock wave of the user; further, detecting a suppression start point based on the obtained pressure oscillation wave, wherein the pressure corresponding to the pressure oscillation wave obtained when the start point is suppressed does not reach the average arterial pressure; prompting a user to close when the inhibition starting point is detected; prompting the user to breathe normally when the suppression end point is detected; the moment when the inhibition end point is detected is positioned after the pressure corresponding to the pressure shock wave reaches the mean arterial pressure; the mean arterial pressure is determined based on the pressure shock wave from the start point of suppression to the end point of suppression. Specific implementation may be referred to the following relevant content of the embodiments, which are not described herein.

In some embodiments, the blood pressure measurement device 10 may also include a wireless power module that may include a power coil and a power control module. The power supply coil is used for inducing an alternating magnetic field generated by the discharge coil of the mobile terminal so as to generate an induction oscillating current; the power supply control module is used for converting the induced oscillation current into direct current and supplying power to the main control module 104, the air pump 102 and the pressure sensor 103.

In particular, the blood pressure information can be used to determine body data such as blood pressure values of the user. The pressure sensor 103 may measure the blood pressure of the user and send measurement data to the main control module 104, the main control module 104 receives the measurement data and determines the blood pressure value of the user according to the measurement data, and the blood pressure information may include information of the blood pressure value, that is, the main control module 104 may send information of the blood pressure value to the mobile terminal and/or other electronic devices. The mobile terminal and/or other electronic equipment can display the information of the blood pressure value to the user through a display screen, and can also broadcast the information to the user through a voice player. In addition, the health report of the user may be generated according to the information of the plurality of blood pressure values, which is not limited in the present application.

In some embodiments, the blood pressure information may further include information of some or all of the measurement data of the pressure sensor, that is, some or all of the measurement data may be directly sent to the mobile terminal and/or other electronic devices without being processed, where the mobile terminal and/or other electronic devices may process the measurement data and determine the blood pressure value of the user, which is not limited in this aspect of the application.

In this embodiment, the mobile terminal may be any one of a smart watch, a smart bracelet, a mobile phone, and a tablet computer, which is not limited in the present application.

The other electronic devices may be other mobile terminals, or may be electronic devices such as a smart television, a smart stereo, and a desktop computer, which is not limited to this aspect of the application.

In other embodiments, the blood pressure measurement device 10 may further include a wireless communication module (not shown), and the main control module 104 sends the blood pressure information of the user to the mobile terminal and/or other electronic devices through the wireless communication module. By arranging the wireless communication module to send the blood pressure information, the use of wired connection modes such as metal contacts and the like can be avoided, so that the universality is improved (some mobile terminals may not support wired connection, in addition, if wired connection is used, additional accessories may need to be added on the mobile terminals), and the use efficiency of users is improved. As an example, the wireless communication module may be any one of bluetooth, WIFI, NFC, infrared module.

In other embodiments, the blood pressure measurement device 10 may also include a display screen for displaying blood pressure information of the user and/or a voice player for broadcasting the blood pressure information. Thus, the blood pressure measuring device 10 can display or report blood pressure information to the user by itself, so that no other devices are needed to perform the above operations.

In this embodiment, the air bag 101 may have a long strip structure, and may be disposed around the wrist of the human body, and for convenience, the air bag 101 may be disposed around and attached to the wrist of the human body, and fixing devices may be disposed at both ends of the air bag 101, respectively, to be engaged with each other, so that the air bag 101 is enclosed and attached to the wrist of the human body by the fixing devices. For example, the fastening means may be a snap or velcro. Further, for convenience of measurement, the balloon 101 is generally made of an elastic material, for example, the balloon 101 may be made of rubber.

Alternatively, the display screen may be used to display information such as a blood pressure value, and the display screen may be a liquid crystal (liquidcrystal display, LCD) display screen or an organic light-emitting diode (OLED) display screen.

It should be noted that the blood pressure measuring device 10 shown in fig. 3 is only an exemplary device provided in the embodiment of the present application, and the blood pressure measuring device in the embodiment of the present application may further include other more or less components, which are not described herein.

In the following, a wristwatch is taken as an example, and another blood pressure measuring device provided in an embodiment of the present application is described.

Fig. 4 shows a schematic diagram of a blood pressure measurement watch according to an embodiment of the present application.

As shown in fig. 4, the blood pressure measurement wristwatch 20 includes: watch body 202, wristband, balloon 205, micropump (not shown), air pressure sensor (not shown) and connecting means 206. Wherein:

the wristband is used to wear the watch body 202 on the wrist of the user. The band includes a first band 201 and a second band 203 at opposite ends of the watch body 202, the first band 201 and the second band 203 being rotatably connected to the watch body 202, respectively, and an airbag 205 is provided on the first band 201 or the second band 203.

The end of the first wristband 201 and the end of the second wristband 203 remote from the watch body 202 may be provided with a fixing device 204, and when the user wears the blood pressure measuring wristwatch, the watch body 202 is brought into contact with the wrist of the user, and the first wristband 201 and the second wristband 203 are bent and fixedly connected by the fixing device 204 to wear the blood pressure measuring wristwatch on the wrist of the user. The binding tightness of the watchband is adjusted by adjusting the connection positions of the first watchband 201, the second watchband 203 and the fixing device 204.

It should be noted that the specific structure of the fixing device 204 is not limited in this embodiment of the present application, and includes a structure such as a folding buckle, a needle buckle, and a butterfly button, which can connect the end of the first watchband 201 and the end of the second watchband 203 that are far from the watch body 202.

The balloon 205 is adapted to contact the wrist of the user when the watch body 202 is worn on the wrist of the user. It will be appreciated that to facilitate blood pressure measurements, balloon 205 is typically made of a flexible material, for example, balloon 205 may be made of Thermoplastic Polyurethane (TPU), polyvinylchloride (PVC), silicone, or the like.

The connecting means 206 is located between the balloon 205 and the wristband; the micropump is in air-path communication with the lumen of the balloon 205 for inflating or deflating the lumen; the air pressure sensor is in air-path communication with the inner cavity of the air bag 205 and is used for detecting the pressure signal of the inner cavity in the process of inflating or deflating the micropump.

In the embodiment of the present application, the setting positions of the micropump and the air pressure sensor are not limited, and the air paths of the micropump and the air pressure sensor can be respectively communicated with the air bag 205. In some embodiments, the micropump is disposed within the meter body 202 and the air pressure sensor is disposed on the balloon 205. In some embodiments, the micropump and the barometric pressure sensor are integrated on balloon 205.

In one possible implementation, the blood pressure measurement watch further comprises a signal processing unit for receiving the pressure signal of the air pressure sensor. The signal processing unit may be a micro control unit or other units having a function of processing signals.

In one possible implementation, the blood pressure measurement wristwatch further includes a circuit board, such as a printed circuit board, disposed within the watch body 202, and the micropump, the air pressure sensor, and the signal processing unit are disposed on the circuit board so as to be connected through the circuit board.

In one possible implementation manner, the blood pressure measurement watch may further include a component capable of ensuring normal operation of the blood pressure measurement watch, such as a power supply component, a display component, a wireless communication component, and the like, where the power supply component supplies power to the blood pressure measurement watch, the wireless communication component may communicate with other devices, and the display component may be used to display the measured blood pressure value of the user.

Next, a blood pressure measurement method provided by the embodiment of the present application will be described.

Fig. 5 shows a schematic flow chart of a blood pressure measurement method according to the present application, which can be applied to the above-mentioned electronic device by way of example and not limitation. The method comprises the following partial or total steps:

s501, the electronic equipment acquires pressure shock waves of a user.

In some embodiments, the electronic device is the blood pressure measuring apparatus shown in fig. 3 or the blood pressure measuring wristwatch shown in fig. 4, and the user may wear the electronic device on a body part; correspondingly, after the electronic equipment detects the operation of a user, the air pump is controlled to inflate the air bag, and meanwhile, the pressure shock wave in the air bag is obtained through the pressure sensor, so that the pressure shock wave of the user is obtained. The pressure oscillation wave may also be referred to as a pressure oscillation wave signal.

The body part of the user wearing the blood pressure measuring device may be a wrist or an upper arm, and the specific position of the body part is not limited in this embodiment.

In other embodiments, the electronic device may be a terminal device such as a mobile phone, and the electronic device establishes communication connection with an acquisition device that acquires pressure shock waves of a user; furthermore, the electronic device can receive the pressure shock wave sent by the acquisition device.

Wherein, the acquisition equipment can be a desk type blood pressure instrument and the like; the communication connection established between the electronic device and the acquisition device may include, but is not limited to: wi-Fi P2P communication connection, bluetooth connection, NFC connection, and so on.

S502, the electronic equipment detects a suppression starting point based on the obtained pressure shock wave, and the pressure corresponding to the obtained pressure shock wave does not reach the mean arterial pressure when the starting point is suppressed.

In some embodiments, the electronic device may detect, in real time, a suppression start point during the process of acquiring the pressure shock wave, where the suppression start point is located before the pressure of the pressure shock wave reaches the mean arterial pressure.

The following exemplary description describes two specific implementations of detecting a suppression start point.

In one implementation, the electronic device may draw an envelope in real time based on the acquired pressure shock wave; the suppression start point is detected based on the envelope. For example, the electronic device may determine a time at which the slope of the envelope corresponds to the extremum as the suppression start point; for another example, the electronic device detects that the slope of the envelope line is an extremum at a certain moment, and the pressure corresponding to the pressure shock wave at the moment is greater than a preset pressure value, and determines that the suppression starting point is detected at the moment.

In another implementation, the electronic device may predict the pressurization maximum based on the acquired pressure shock wave; further, when the pressure corresponding to the pressure shock wave is detected to have the first ratio to the maximum value of the pressurization, it is determined that the suppression start point is detected at that time. The maximum value of the pressurization is the pressure corresponding to the pressure shock wave at the end of the pressurization.

The pressure oscillation wave of the predicted maximum pressure value may be the pressure oscillation wave before the pressure value reaches the preset value. It will be appreciated that since the pressure oscillation wave is acquired during inflation of the balloon, the pressure of the pressure oscillation wave has a basic tendency to rise continuously up to a peak value (i.e., an average arterial pressure) as shown in fig. 1, and thus the preset pressure is a value smaller than the peak value, which can be determined based on an empirical value. For example, the electronic device may predict the maximum value of pressurization based on all pressure shock waves currently acquired when the acquired pressure of the pressure shock waves is a preset value; after the maximum pressure value is obtained, comparing the ratio of the pressure shock wave obtained in real time to the maximum pressure value with a first ratio, and determining that the inhibition starting point is detected when the pressure corresponding to the pressure shock wave and the maximum pressure value are the first ratio.

The method for predicting the pressurizing maximum value by the electronic equipment can be that signal characteristics are extracted from the obtained pressure shock wave; based on the signal characteristics, obtaining the pressurizing maximum value of the user through the regression relation between the signal characteristics of the pressure shock wave and the pressurizing maximum value; the regression relationship is obtained based on the signal characteristics of the pressure shock wave of the sample user and the maximum value of the pressurization of the sample user.

In other embodiments, the electronic device may first detect the degree of respiratory disturbance based on the acquired pressure shock wave; further, when the degree of respiratory disturbance is detected as a strong disturbance, a suppression start point is detected based on the acquired pressure shock wave.

Two specific implementations of detecting the degree of respiratory disturbance are described in the following examples.

In one implementation, the electronic device may input the acquired pressure shock wave into an interference recognition model to obtain a detection result of respiratory interference degree, where the interference recognition model is obtained based on sample pressure shock wave as input and respiratory interference degree of the sample pressure shock wave is tag training. For example, the electronic device may input the pressure shock wave acquired in the target time period into the interference recognition model to obtain a detection result of the respiratory interference degree, where the target time period is from the measured start time to the current time, or includes a preset duration of the current time and before the current time.

In another implementation, the electronic device may acquire a low-frequency signal in the pressure shock wave, and when determining that the signal strength of the low-frequency signal is higher than a preset threshold, obtain a detection result of the respiratory disturbance degree as strong disturbance; on the contrary, the detection result of the respiratory disturbance degree is weak disturbance.

It should be noted that, the specific content of the electronic device for detecting the suppression start point based on the obtained pressure shock wave may also be referred to the related content of fig. 6.

S503, when the electronic equipment detects the inhibition starting point, prompting the user to close.

The prompting mode of the electronic equipment for prompting the user to close the air can comprise at least one of display, voice broadcasting and vibration; any combination of display, voice broadcast and vibration is also possible; other prompting modes are also possible and are not limited herein.

And S504, the electronic equipment detects a suppression end point based on the obtained pressure shock wave, and the moment when the suppression end point is detected is positioned after the pressure corresponding to the pressure shock wave reaches the mean arterial pressure.

In one implementation, the electronic device may determine the suppression end point based on the suppression start point, where a duration from the suppression start point to the suppression end point is a preset duration. For example, the electronic device starts timing when detecting the suppression start point, and determines that the time is the suppression end point when timing reaches a preset duration. The preset duration may be determined based on an empirical value, and specific numerical values of the preset duration are not limited herein.

In another implementation, the electronic device may determine the end point of suppression based on a predicted maximum value of pressurization. For example, the electronic device may calculate, in real time, a ratio of the pressure corresponding to the obtained pressure shock wave to the predicted maximum pressurization value, and determine that the end point of suppression is detected when the second ratio of the pressure corresponding to the obtained pressure shock wave to the maximum pressurization value is reached.

S505, when the electronic equipment detects the inhibition end point, prompting the user to breathe normally.

The prompting mode of the electronic equipment for prompting the normal breathing of the user can comprise at least one of display, voice broadcasting and vibration; any combination of display, voice broadcast and vibration is also possible; other prompting modes are also possible and are not limited herein.

S506, the electronic equipment determines the average arterial pressure based on the pressure shock waves from the inhibition starting point to the inhibition ending point.

In some embodiments, the electronic device may calculate the mean arterial pressure based on the pressure oscillation wave from the suppression start point to the suppression end point after obtaining the pressure oscillation wave from the suppression start point to the suppression end point; furthermore, the electronic device may also calculate the diastolic and systolic pressures of the user based on the mean arterial pressure.

It should be noted that, in other embodiments, the electronic device may also calculate the blood pressure value of the user based on the pressure oscillation wave from the zero value to the maximum pressure value after the acquired pressure corresponding to the pressure oscillation wave reaches the maximum pressure value, where the blood pressure value of the user may include an average arterial pressure, a diastolic pressure, and a systolic pressure. The method for calculating the blood pressure value based on the pressure oscillation wave is not limited herein.

In some embodiments, after the blood pressure measurement watch obtains the blood pressure of the user, the blood pressure value of the user can be displayed through the display screen; the blood pressure value of the user may also be broadcast by voice.

Another blood pressure measurement method according to the embodiment of the present application will be described in detail based on a schematic diagram of the blood pressure measurement wristwatch shown in fig. 4. It should be noted that the blood pressure measurement watch may also be referred to as a narrow balloon wrist type blood pressure watch in some embodiments.

Referring to fig. 6, fig. 6 illustrates another blood pressure measurement method according to an embodiment of the present application. As shown in fig. 6, the blood pressure measurement method may include some or all of the following steps:

s601, a blood pressure measuring watch collects pressure shock waves.

In some embodiments, the user may need to wear the blood pressure measurement watch on the wrist before the blood pressure measurement watch collects the pressure shock wave. Referring to fig. 7, fig. 7 is a schematic diagram of a wristwatch for measuring blood pressure worn by a user according to an embodiment of the present application. As shown in fig. 7, a user can wear the blood pressure measuring watch on the wrist through the fixing device of the blood pressure measuring watch, the display of the blood pressure measuring watch is positioned at one side of the back of the hand, and the air bag of the blood pressure measuring watch is mainly positioned at one side of the palm of the hand; the fixing device can be a structure such as a folding buckle, a needle buckle and a butterfly hidden buckle, and can fix the blood pressure measuring watch on a wrist. It should be noted that the pressure shock wave collected on the wrist may also be referred to as a pulse pressure shock wave signal.

In one implementation, a user may first wear a blood pressure measurement wristwatch on the wrist; furthermore, when the blood pressure measurement watch receives a user operation to start measuring blood pressure, the air pump starts to inflate the air bag, and meanwhile, the pressure shock wave in the air bag is collected through the pressure sensor.

The method for receiving the user operation by the blood pressure measurement watch can be various, and is not limited herein. For example, if the blood pressure measurement watch is provided with a touch screen, when the blood pressure measurement watch detects that a user operates the touch screen, the air pump starts to inflate the air bag, and meanwhile, pressure shock waves in the air bag are collected through the pressure sensor; for example, the blood pressure measurement watch has a voice recognition function, so that the blood pressure measurement watch can start to collect pressure shock waves when hearing preset voice, if the preset voice can be "start to measure blood pressure", the user can say "start to measure blood pressure", and accordingly, when receiving the preset voice, the blood pressure measurement watch starts to inflate the air bag through the air pump, and meanwhile, the pressure shock waves in the air bag are collected through the pressure sensor.

In another implementation, the blood pressure measurement watch may begin collecting pressure shock waves of the user upon receiving a user command from the control device, the user command being for instructing the blood pressure measurement watch to begin measuring blood pressure. For example, the control device is a mobile phone, the blood pressure measurement watch can be in communication connection with the mobile phone, and an application corresponding to the blood pressure measurement watch can be installed on the mobile phone, so that when the mobile phone detects that a user acts on a user operation of an application interface, a user instruction can be sent to the blood pressure measurement watch, and the user instruction is used for indicating the blood pressure measurement watch to start measuring blood pressure; after the blood pressure measurement watch receives the user operation, the air pump starts to inflate the air bag, and meanwhile, the pressure sensor collects pressure shock waves in the air bag.

It should be noted that the control device may also be an electronic device such as a tablet computer, a notebook computer, an ultra mobile personal computer, a netbook, a personal digital assistant, etc., which is not limited herein.

Wherein the communication connection established between the blood pressure measurement watch and the control device may include, but is not limited to: wi-Fi P2P communication connection, bluetooth connection, NFC connection, and so on.

S602, detecting whether the respiratory disturbance degree is strong disturbance or not by the blood pressure measurement watch based on the acquired pressure shock waves.

In some embodiments, the blood pressure measurement watch may detect a degree of respiratory disturbance based on the acquired pressure shock wave before the pressure in the bladder increases to a preset pressure; further, step S603 is performed when the degree of respiratory disturbance is detected as a strong disturbance, and step S604 is performed when the degree of respiratory disturbance is not detected yet as a strong disturbance when the pressure in the bladder increases to the preset pressure.

The degree of respiratory disturbance can be divided into strong disturbance and weak disturbance. It can be understood that the suppression is required and the suppression is not required, and the suppression is required when the respiratory disturbance degree is strong disturbance and the suppression is not required when the respiratory disturbance degree is weak disturbance.

In one implementation, the blood pressure measurement watch may input the acquired pressure shock wave into an interference recognition model to obtain a detection result of respiratory interference degree, where the interference recognition model is obtained based on sample pressure shock wave as input and respiratory interference degree of the sample pressure shock wave is obtained by tag training. For example, the disturbance recognition model may be a classification model, and the detection result of the respiratory disturbance degree includes strong disturbance and weak disturbance.

Alternatively, the blood pressure measuring wristwatch may determine pressure shock waves to be input into the disturbance identification model by sliding a time window. For example, the duration of the sliding time period is m, the step length is n, the blood pressure measurement watch may input the pressure shock wave acquired from 0 to m time into the interference recognition model at m time, determine the detection result of the respiratory disturbance at m time, and execute step S603 if the detection result of the respiratory disturbance at m time is strong disturbance; if the detection result of the breathing interference at the m moment is weak interference, inputting the pressure shock waves acquired from the n moment to the m+n moment into an interference identification model by the blood pressure measurement watch to obtain the detection result of the breathing interference at the m+n moment, and the like until the pressure in the air bag is increased to a preset pressure or the detection result of the breathing interference is strong interference; wherein m and n are both positive numbers.

In one implementation, the blood pressure measurement watch may obtain a low frequency signal from the pressure shock wave, and determine that the current respiratory disturbance degree is strong disturbance when the low frequency signal is higher than a preset threshold; conversely, the current degree of respiratory disturbance is weak disturbance. For example, the blood pressure measurement watch may acquire a low frequency signal from the acquired pressure shock wave in real time, and determine that the current respiratory disturbance degree is strong disturbance when the low frequency signal is higher than a preset threshold. The preset threshold may be determined according to the energy distribution of the sample pressure shock wave, for example, if the respiratory disturbance degree of the low-frequency signals in the plurality of sample pressure shock waves is high disturbance when the respiratory disturbance degree is higher than 0.05Hz, the preset threshold may be set to 0.05Hz.

S603, detecting an inhibition starting point based on the collected pressure shock waves when the blood pressure measurement watch detects that the respiratory interference degree is strong interference.

In one implementation, the blood pressure measurement watch may draw an envelope in real time as the pressure shock wave is acquired; the slope of the envelope is calculated to detect the suppression start point. For example, the blood pressure measurement wristwatch may determine, as the inhibition start point, a time at which the slope of the envelope corresponds to the extremum; for another example, if the blood pressure measurement watch detects that the slope of the envelope curve is an extremum at a certain moment and the pressure corresponding to the pressure shock wave at the moment is greater than a preset pressure value, it is determined that the inhibition starting point is detected at the moment.

In another implementation, the blood pressure measurement watch may predict a maximum value of pressurization based on the acquired pressure shock wave; further, when the pressure corresponding to the pressure shock wave is detected to have the first ratio to the maximum value of the pressurization, it is determined that the suppression start point is detected at that time. The maximum value of the pressurization is the pressure corresponding to the pressure shock wave at the end of the pressurization. For example, the first ratio is x%, where x is a positive number, and the blood pressure measurement wristwatch may preset a maximum pressure value based on the currently acquired pressure shock wave when the bladder pressure reaches a preset pressure value, and further determine that the inhibition start point is detected when the pressure in the bladder increases to x% of the maximum pressure value.

The method for predicting the maximum value of the pressurization of the blood pressure measurement watch can be obtained by a regression method (such as linear regression) to learn the relationship between the maximum value of the pressurization in the early stage of the pressurization process. For example, the blood pressure measurement wristwatch may extract signal features from the acquired pressure shock wave; based on the signal characteristics, obtaining the pressurizing maximum value of the user through the regression relation between the signal characteristics of the pressure shock wave and the pressurizing maximum value; the regression relationship is obtained based on the signal characteristics of the pressure shock wave of the sample user and the maximum value of the pressurization of the sample user. The signal characteristics can be amplitude change rate of the pressure shock wave, the ratio of the current amplitude to the maximum amplitude, and the like.

S604, the blood pressure measuring watch normally collects pressure shock waves until the blood pressure measurement is finished.

In some embodiments, when the pressure in the air bag increases to the preset pressure, the blood pressure measurement watch still does not detect that the respiratory disturbance degree is strong disturbance, and the blood pressure measurement watch can stop detecting the respiratory disturbance degree and only keep collecting the pressure shock wave to indicate that the blood pressure measurement is finished. The end of the blood pressure measurement may be the end of the deflation of the balloon, or may be the maximum pressure increase in the balloon, and is not limited thereto.

S605, when the blood pressure measurement watch detects the inhibition starting point, prompting the user to stop the air in a first prompting mode.

In some embodiments, the blood pressure measurement watch may prompt the user by any one of display screen display, voice broadcast and vibration, or by a combination of any of display screen display, voice broadcast and vibration. For example, the blood pressure measurement watch may display first information via a display screen; for another example, the blood pressure measurement watch may play first information through a display screen, where the first information is used to prompt the user to close.

In one implementation, the first prompting mode is a combination of display screen display, voice broadcasting and vibration, the first information comprises prompting information and preset voice, and then the blood pressure measurement watch can play the preset voice when the prompting information is displayed through the display screen, and meanwhile vibrates to prompt a user. The content of the prompt information and the content of the preset voice can be the same or different.

Referring to fig. 8, fig. 8 is a schematic diagram of a blood pressure measurement watch according to an embodiment of the present application for prompting a user. As shown in fig. 8, when the blood pressure measurement watch detects the start point of inhibition, the "please start to close the air at the prompt tone and keep the air-close state before the next prompt" is displayed on the display screen, and the "please start to close the air" is broadcasted by voice, and meanwhile, the blood pressure measurement watch can prompt the user through vibration.

S606, the blood pressure measurement watch detects a suppression ending point based on the acquired pressure shock wave.

In one implementation, the blood pressure measurement watch may determine the end point of inhibition by a preset duration. The preset duration is a fixed air-closing duration, for example, after the air-closing is started, the air-closing state is kept for a plurality of seconds near the peak of the key pressure shock wave, the accuracy of key feature extraction is ensured, and normal respiration is recovered after the fixed air-closing duration is ended.

In another implementation, the blood pressure measurement watch may detect the end point of inhibition by percentage pressurization. For example, the end point of respiratory disturbance suppression may be determined by analyzing the correlation between the key feature extraction and the percentage of pressurization to ensure that the pressure boost phase is closed in strong correlation with the key feature extraction, based on the maximum possible pressurization predicted by the model.

It should be noted that, the specific implementation of detecting the suppression end point may also refer to the relevant content of step S504.

Referring to fig. 9, fig. 9 is a schematic diagram showing the positions of pressure shock waves at the start point and the end point of the suppression according to the embodiment of the present application. In fig. 9, the start point and the end point of suppression are represented by black dots, and as shown in fig. 9, the start point and the end point of suppression are located before and after the peak of the pressure shock wave.

S607, when the blood pressure measurement watch detects the inhibition end point, the user is prompted to breathe normally in a second prompting mode.

In some embodiments, the first prompting manner may be the same as or different from the second prompting manner, and the specific prompting manner may refer to the relevant content of S605, which is not described herein.

Referring to fig. 10, fig. 10 is a schematic diagram of another blood pressure measurement watch according to an embodiment of the present application for prompting a user. As shown in fig. 10, when the blood pressure measurement watch detects the end point of the inhibition, the "end of the air-closure" is displayed on the display screen, and the normal breathing can be recovered, and the "end of the air-closure" is voice broadcast, and meanwhile, the blood pressure measurement watch can prompt the user through vibration.

And S608, the blood pressure measurement watch obtains the blood pressure of the user based on the pressure shock waves acquired from the inhibition starting point to the inhibition ending point.

In one implementation, the blood pressure measurement watch may calculate the mean arterial pressure based on the pressure shock wave from the start point of inhibition to the end point of inhibition; furthermore, the blood pressure measurement wristwatch may calculate the diastolic and systolic pressures of the user based on the mean arterial pressure.

It should be noted that, in other embodiments, the blood pressure measurement watch may also calculate the blood pressure value of the user based on the acquired pressure shock wave after the acquired pressure corresponding to the pressure shock wave reaches the maximum pressure value or after the measurement ends, where the blood pressure value of the user may include an average arterial pressure, a diastolic pressure, and a systolic pressure. The method for calculating the blood pressure value based on the pressure oscillation wave is not limited herein.

In another implementation, the blood pressure measurement watch may also send the acquired pressure shock wave to other devices, and the other devices calculate the blood pressure of the user, and further receive the blood pressure of the user sent by the other devices.

An electronic device 100 according to an exemplary embodiment of the present application will be described below with reference to fig. 11 and 12, and the electronic device 100 may perform the blood pressure measuring method shown in fig. 5 or 6.

Fig. 11 shows a hardware configuration diagram of the electronic device 100.

It should be understood that electronic device 100 may have more or fewer components than shown, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The electronic device 100 may include: processor 110, external memory interface 120, internal memory 121, universal serial bus (universal serial bus, USB) interface 130, charge management module 140, power management module 141, battery 142, antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headset interface 170D, sensor module 180, keys 190, motor 191, indicator 192, camera 193, display 194, and subscriber identity module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It should be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the application, electronic device 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

The controller may be a neural hub and a command center of the electronic device 100, among others. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces. The interfaces may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (subscriber identity module, SIM) interface, and/or a universal serial bus (universal serial bus, USB) interface, among others.

The I2C interface is a bi-directional synchronous serial bus comprising a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may contain multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, charger, flash, camera 193, etc., respectively, through different I2C bus interfaces. For example: the processor 110 may be coupled to the touch sensor 180K through an I2C interface, such that the processor 110 communicates with the touch sensor 180K through an I2C bus interface to implement a touch function of the electronic device 100.

The I2S interface may be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through the I2S interface, to implement a function of answering a call through the bluetooth headset.

PCM interfaces may also be used for audio communication to sample, quantize and encode analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface to implement a function of answering a call through the bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus for asynchronous communications. The bus may be a bi-directional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through a UART interface, to implement a function of playing music through a bluetooth headset.

The MIPI interface may be used to connect the processor 110 to peripheral devices such as a display 194, a camera 193, and the like. The MIPI interfaces include camera serial interfaces (camera serial interface, CSI), display serial interfaces (display serial interface, DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the photographing functions of electronic device 100. The processor 110 and the display 194 communicate via a DSI interface to implement the display functionality of the electronic device 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal or as a data signal. In some embodiments, a GPIO interface may be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, an MIPI interface, etc.

The SIM interface may be used to communicate with the SIM card interface 195 to perform functions of transferring data to or reading data from the SIM card.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the electronic device 100, and may also be used to transfer data between the electronic device 100 and a peripheral device. And can also be used for connecting with a headset, and playing audio through the headset. The interface may also be used to connect other electronic devices, such as AR devices, etc.

It should be understood that the interfacing relationship between the modules illustrated in the embodiments of the present application is only illustrative, and is not meant to limit the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also employ different interfacing manners in the above embodiments, or a combination of multiple interfacing manners.

The charge management module 140 is configured to receive a charge input from a charger. The charger can be a wireless charger or a wired charger.

The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 and provides power to the processor 110, the internal memory 121, the external memory, the display 194, the camera 193, the wireless communication module 160, and the like.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G, etc., applied to the electronic device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc., as applied to the electronic device 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, antenna 1 and mobile communication module 150 of electronic device 100 are coupled, and antenna 2 and wireless communication module 160 are coupled, such that electronic device 100 may communicate with a network and other devices through wireless communication techniques. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

The electronic device 100 implements display functions through a GPU, a display screen 194, an application processor, and the like. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos, and the like. The display 194 includes a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED), an active-matrix organic light emitting diode (AMOLED), a flexible light-emitting diode (flex), a mini, a Micro-OLED, a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some embodiments, the electronic device 100 may include 1 or N display screens 194, N being a positive integer greater than 1.

The electronic device 100 may implement photographing functions through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP is used to process data fed back by the camera 193. For example, when photographing, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electric signal, and the camera photosensitive element transmits the electric signal to the ISP for processing and is converted into an image visible to naked eyes. ISP can also optimize the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in the camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a Complementary Metal Oxide Semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then transferred to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV, or the like format. In some embodiments, electronic device 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process other digital signals besides digital image signals. For example, when the electronic device 100 selects a frequency bin, the digital signal processor is used to fourier transform the frequency bin energy, or the like.

Video codecs are used to compress or decompress digital video. The electronic device 100 may support one or more video codecs. In this way, the electronic device 100 may play or record video in a variety of encoding formats, such as: dynamic picture experts group (moving picture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

The NPU is a neural-network (NN) computing processor, and can rapidly process input information by referencing a biological neural network structure, for example, referencing a transmission mode between human brain neurons, and can also continuously perform self-learning. Applications such as intelligent awareness of the electronic device 100 may be implemented through the NPU, for example: image recognition, face recognition, speech recognition, text understanding, etc.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to enable expansion of the memory capabilities of the electronic device 100. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. For example, files such as music, video, etc. are stored in an external memory card.

The internal memory 121 may be used to store computer executable program code including instructions. The processor 110 executes various functional applications of the electronic device 100 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a storage program area and a storage data area. The storage program area may store an operating system, an application required for at least one function (such as a face recognition function, a fingerprint recognition function, a mobile payment function, etc.), and the like. The storage data area may store data created during use of the electronic device 100 (e.g., face information template data, fingerprint information templates, etc.), and so on. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and the like.

The electronic device 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, and the like. Such as music playing, recording, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or a portion of the functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also referred to as a "horn," is used to convert audio electrical signals into sound signals. The electronic device 100 may listen to music, or to hands-free conversations, through the speaker 170A.

A receiver 170B, also referred to as a "earpiece", is used to convert the audio electrical signal into a sound signal. When electronic device 100 is answering a telephone call or voice message, voice may be received by placing receiver 170B in close proximity to the human ear.

Microphone 170C, also referred to as a "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or transmitting voice information, the user can sound near the microphone 170C through the mouth, inputting a sound signal to the microphone 170C. The electronic device 100 may be provided with at least one microphone 170C. In other embodiments, the electronic device 100 may be provided with two microphones 170C, and may implement a noise reduction function in addition to collecting sound signals. In other embodiments, the electronic device 100 may also be provided with three, four, or more microphones 170C to enable collection of sound signals, noise reduction, identification of sound sources, directional recording functions, etc.

The earphone interface 170D is used to connect a wired earphone. The headset interface 170D may be a USB interface 130 or a 3.5mm open mobile electronic device platform (open mobile terminal platform, OMTP) standard interface, a american cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A is of various types, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may be a capacitive pressure sensor comprising at least two parallel plates with conductive material. The capacitance between the electrodes changes when a force is applied to the pressure sensor 180A. The electronic device 100 determines the strength of the pressure from the change in capacitance. When a touch operation is applied to the display screen 194, the electronic apparatus 100 detects the touch operation intensity according to the pressure sensor 180A. The electronic device 100 may also calculate the location of the touch based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch location, but at different touch operation strengths, may correspond to different operation instructions. For example: and executing an instruction for checking the short message when the touch operation with the touch operation intensity smaller than the first pressure threshold acts on the short message application icon. And executing an instruction for newly creating the short message when the touch operation with the touch operation intensity being greater than or equal to the first pressure threshold acts on the short message application icon.

The gyro sensor 180B may be used to determine a motion gesture of the electronic device 100. In some embodiments, the angular velocity of electronic device 100 about three axes (i.e., x, y, and z axes) may be determined by gyro sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. For example, when the shutter is pressed, the gyro sensor 180B detects the shake angle of the electronic device 100, calculates the distance to be compensated by the lens module according to the angle, and makes the lens counteract the shake of the electronic device 100 through the reverse motion, so as to realize anti-shake. The gyro sensor 180B may also be used for navigating, somatosensory game scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, electronic device 100 calculates altitude from barometric pressure values measured by barometric pressure sensor 180C, aiding in positioning and navigation.

The magnetic sensor 180D includes a hall sensor. The electronic device 100 may detect the opening and closing of the flip cover using the magnetic sensor 180D. In some embodiments, when the electronic device 100 is a flip machine, the electronic device 100 may detect the opening and closing of the flip according to the magnetic sensor 180D. And then according to the detected opening and closing state of the leather sheath or the opening and closing state of the flip, the characteristics of automatic unlocking of the flip and the like are set.

The acceleration sensor 180E may detect the magnitude of acceleration of the electronic device 100 in various directions (typically three axes). The magnitude and direction of gravity may be detected when the electronic device 100 is stationary. The electronic equipment gesture recognition method can also be used for recognizing the gesture of the electronic equipment, and is applied to horizontal and vertical screen switching, pedometers and other applications.

A distance sensor 180F for measuring a distance. The electronic device 100 may measure the distance by infrared or laser. In some embodiments, the electronic device 100 may range using the distance sensor 180F to achieve quick focus.

The proximity light sensor 180G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The electronic device 100 emits infrared light outward through the light emitting diode. The electronic device 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, it may be determined that there is an object in the vicinity of the electronic device 100. When insufficient reflected light is detected, the electronic device 100 may determine that there is no object in the vicinity of the electronic device 100. The electronic device 100 can detect that the user holds the electronic device 100 close to the ear by using the proximity light sensor 180G, so as to automatically extinguish the screen for the purpose of saving power. The proximity light sensor 180G may also be used in holster mode, pocket mode to automatically unlock and lock the screen.

The ambient light sensor 180L is used to sense ambient light level. The electronic device 100 may adaptively adjust the brightness of the display 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust white balance when taking a photograph. Ambient light sensor 180L may also cooperate with proximity light sensor 180G to detect whether electronic device 100 is in a pocket to prevent false touches.

The fingerprint sensor 180H is used to collect a fingerprint. The electronic device 100 may utilize the collected fingerprint feature to unlock the fingerprint, access the application lock, photograph the fingerprint, answer the incoming call, etc.

The temperature sensor 180J is for detecting temperature. In some embodiments, the electronic device 100 performs a temperature processing strategy using the temperature detected by the temperature sensor 180J. For example, when the temperature reported by temperature sensor 180J exceeds a threshold, electronic device 100 performs a reduction in the performance of a processor located in the vicinity of temperature sensor 180J in order to reduce power consumption to implement thermal protection. In other embodiments, when the temperature is below another threshold, the electronic device 100 heats the battery 142 to avoid the low temperature causing the electronic device 100 to be abnormally shut down. In other embodiments, when the temperature is below a further threshold, the electronic device 100 performs boosting of the output voltage of the battery 142 to avoid abnormal shutdown caused by low temperatures.

The touch sensor 180K, also referred to as a "touch panel". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the electronic device 100 at a different location than the display 194.

The keys 190 include a power-on key, a volume key, etc. The keys 190 may be mechanical keys. Or may be a touch key. The electronic device 100 may receive key inputs, generating key signal inputs related to user settings and function controls of the electronic device 100.

The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration alerting as well as for touch vibration feedback. For example, touch operations acting on different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 191 may also correspond to different vibration feedback effects by touching different areas of the display screen 194. Different application scenarios (such as time reminding, receiving information, alarm clock, game, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The indicator 192 may be an indicator light, may be used to indicate a state of charge, a change in charge, may be used to synthesize a request, missed an incoming call, a notification, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card may be inserted into the SIM card interface 195, or removed from the SIM card interface 195 to enable contact and separation with the electronic device 100. The electronic device 100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface 195 may support Nano SIM cards, micro SIM cards, and the like. The same SIM card interface 195 may be used to insert multiple cards simultaneously. The types of the plurality of cards may be the same or different. The SIM card interface 195 may also be compatible with different types of SIM cards. The SIM card interface 195 may also be compatible with external memory cards. The electronic device 100 interacts with the network through the SIM card to realize functions such as communication and data communication.

In the embodiment of the present application, the electronic device 100 may be provided with devices such as an air bag, an air pump, and a pressure sensor, for acquiring pressure shock waves; the electronic device 100 may also acquire the pressure shock wave through other devices.

In an embodiment of the present application, the electronic device 100 may perform the blood pressure measurement method through the processor 110.

Fig. 12 is a software architecture block diagram of an electronic device according to an embodiment of the present application.

The layered architecture divides the software into several layers, each with distinct roles and branches. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, from top to bottom, an application layer, an application framework layer, an Zhuoyun row (Android run) and system libraries, and a kernel layer, respectively.

The application layer may include a series of application packages.

As shown in fig. 12, the application package may include applications such as cameras, gallery, calendar, phone calls, map, navigation, WLAN, bluetooth, music, video, short message and blood pressure measurement management.

In some embodiments, the user may communicate with other devices through blood pressure measurement management to obtain pressure shock waves.

The application framework layer provides an application programming interface (application programming interface, API) and programming framework for application programs of the application layer. The application framework layer includes a number of predefined functions.

As shown in fig. 12, the application framework layer may include a display (display) manager, a sensor (sensor) manager, a cross-device connection manager, an event manager, a task (activity) manager, a window manager, a content provider, a view system, a resource manager, a notification manager, and the like.

The display manager is used for the display management of the system and is responsible for the management of all display related transactions, including creation, destruction, direction switching, size and state change and the like. Typically, there will be only one default display module on a single device, the main display module.

In the embodiment of the application, the electronic equipment can execute the display of the prompt information through the display manager to prompt the user to close or breathe normally, and the specific implementation process can be seen from the relevant content.

The sensor manager is responsible for the state management of the sensor, manages the application to monitor the sensor event, and reports the event to the application in real time.

The cross-device connection manager is configured to establish a communication connection based on which the image resource is sent to the sending device.

The event manager is used for event management service of the system, and is responsible for receiving events uploaded by the bottom layer and distributing the events to each window to complete the works of receiving and distributing the events and the like.

The task manager is used for the management of task (Activity) components, including startup management, lifecycle management, task direction management, and the like.

The window manager is used for managing window programs. The window manager can acquire the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like. The window manager is also responsible for window display management, including management related to window display mode, display size, display coordinate position, display hierarchy, and the like.

The specific implementation of the above embodiments may be found in the context of the blood pressure measurement method above.

The content provider is used to store and retrieve data and make such data accessible to applications. The data may include video, images, audio, calls made and received, browsing history and bookmarks, phonebooks, etc.

The view system includes visual controls, such as controls to display text, controls to display pictures, and the like. The view system may be used to build applications. The display interface may be composed of one or more views. For example, a display interface including a text message notification icon may include a view displaying text and a view displaying a picture.

The resource manager provides various resources for the application program, such as localization strings, icons, pictures, layout files, video files, and the like.

The notification manager allows the application to display notification information in a status bar, can be used to communicate notification type messages, can automatically disappear after a short dwell, and does not require user interaction. Such as notification manager is used to inform that the download is complete, message alerts, etc. The notification manager may also be a notification in the form of a chart or scroll bar text that appears on the system top status bar, such as a notification of a background running application, or a notification that appears on the screen in the form of a dialog window. For example, a text message is prompted in a status bar, a prompt tone is emitted, the electronic device vibrates, and an indicator light blinks, etc.

Android run time includes a core library and virtual machines. Android run time is responsible for scheduling and management of the Android system.

The core library consists of two parts: one part is a function which needs to be called by java language, and the other part is a core library of android.

The application layer and the application framework layer run in a virtual machine. The virtual machine executes java files of the application program layer and the application program framework layer as binary files. The virtual machine is used for executing the functions of object life cycle management, stack management, thread management, security and exception management, garbage collection and the like.

The system library (which may also be referred to as a data management layer) may include a plurality of functional modules. For example: surface manager (surface manager), media library (Media Libraries), three-dimensional graphics processing library (e.g., openGL ES), 2D graphics engine (e.g., SGL), event data, and the like.

The surface manager is used to manage the display subsystem and provides a fusion of 2D and 3D layers for multiple applications.

Media libraries support a variety of commonly used audio, video format playback and recording, still image files, and the like. The media library may support a variety of audio video encoding formats, such as: MPEG4, h.264, MP3, AAC, AMR, JPG, PNG, etc.

The three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like.

The 2D graphics engine is a drawing engine for 2D drawing.

The kernel layer is a layer between hardware and software. The inner core layer at least comprises a display driver, a camera driver, an audio driver and a sensor driver.

The embodiment of the application also provides electronic equipment, which comprises one or more processors and one or more memories; wherein the one or more memories are coupled to the one or more processors, the one or more memories being operable to store computer program code comprising computer instructions that, when executed by the one or more processors, cause the electronic device to perform the methods described in the above embodiments.

Embodiments of the present application also provide a computer program product comprising instructions which, when run on an electronic device, cause the electronic device to perform the method described in the above embodiments.

Embodiments of the present application also provide a computer-readable storage medium including instructions that, when executed on an electronic device, cause the electronic device to perform the method described in the above embodiments.

It is understood that the embodiments of the present application may be arbitrarily combined to achieve different technical effects.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk), etc.

Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium includes: ROM or random access memory RAM, magnetic or optical disk, etc.

In summary, the foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made according to the disclosure of the present application should be included in the protection scope of the present application.

Claims

1. A method of measuring blood pressure, the method comprising:

acquiring pressure shock waves of a user;

detecting an inhibition starting point based on the obtained pressure shock wave, wherein the pressure corresponding to the pressure shock wave obtained when the inhibition starting point is not reached to the mean arterial pressure;

prompting a user to close when the inhibition starting point is detected;

And determining the mean arterial pressure based on the pressure shock wave from the inhibition starting point to the inhibition ending point.

2. The method according to claim 1, wherein the pressure corresponding to the pressure oscillation wave obtained at the time of the start point of suppression is greater than a preset pressure value, and before the start point of suppression is detected based on the obtained pressure oscillation wave, the method comprises:

3. The method of claim 1, wherein the pressure corresponding to the pressure shock wave obtained at the start point of the suppression is a first ratio to a maximum value of the pressurization.

4. A method according to claim 3, comprising, prior to said detecting an inhibition start point:

extracting signal characteristics from the obtained pressure shock wave;

based on the signal characteristics, obtaining the pressurizing maximum value through the regression relation between the signal characteristics of the pressure shock wave and the pressurizing maximum value; the regression relationship is obtained based on the signal characteristics of the pressure shock wave of the sample user and the maximum value of the pressurization of the sample user.

5. The method according to claim 3 or 4, wherein the pressure corresponding to the pressure shock wave obtained at the end point of the suppression is a second ratio to the maximum value of the pressurization.

6. The method according to any one of claims 1 to 4, wherein a time period from the suppression start point to the suppression end point is a preset time period.

7. The method according to any one of claims 1 to 6, wherein the detecting the suppression start point based on the acquired pressure shock wave includes:

and detecting the inhibition starting point based on the obtained pressure shock wave when the respiration interference degree is detected to be strong interference.

8. The method of claim 7, wherein detecting the degree of respiratory disturbance based on the acquired pressure shock wave comprises:

the interference recognition model is based on sample pressure shock waves as input, and the respiratory interference degree of the sample pressure shock waves is obtained through label training.

9. The method of claim 7, wherein detecting the degree of respiratory disturbance based on the acquired pressure shock wave comprises:

And when the signal intensity of the low-frequency signal in the obtained pressure shock wave is higher than a preset threshold value, obtaining a detection result of the respiratory interference degree as the strong interference.

10. The method of any one of claims 1-9, wherein the prompting means for prompting the user to close the breath and/or breathe normally comprises at least one of a display, a voice broadcast, and a vibration.

11. A blood pressure measurement device, comprising: a bladder, an air pump, a pressure sensor, one or more processors, memory, and one or more computer programs;

the air pump is used for inflating the air bag, and the pressure sensor is used for acquiring pressure shock waves from the air bag; the one or more computer programs are stored in the memory, the one or more computer programs comprising instructions, which when executed by the blood pressure measurement device, cause the blood pressure measurement device to perform the method of any of claims 1-10.

12. An electronic device comprising one or more processors and one or more memories; wherein the one or more memories are coupled to the one or more processors, the one or more memories for storing computer program code comprising computer instructions that, when executed by the one or more processors, cause the electronic device to perform the method of any of claims 1-10.

13. A computer readable storage medium comprising instructions which, when run on an electronic device, cause the electronic device to perform the method of any of claims 1-10.