WO2022206631A1

WO2022206631A1 - Blood pressure measurement method and apparatus

Info

Publication number: WO2022206631A1
Application number: PCT/CN2022/083210
Authority: WO
Inventors: 张小兵; 黄振龙; 张慧
Original assignee: 华为技术有限公司
Priority date: 2021-03-31
Filing date: 2022-03-25
Publication date: 2022-10-06
Also published as: CN115137327A

Abstract

A blood pressure measurement method and apparatus (100), relating to the technical field of blood pressure measurement. The blood pressure measurement method and apparatus (100) can accurately track the blood pressure change trend of a user without affecting normal life of the user, thereby improving user experience. The blood pressure measurement method comprises a plurality of measurement modes, and further comprises: determining a measurement accuracy level of a user to be measured (S201), wherein the measurement accuracy level of said user is used for representing a blood pressure fluctuation condition of said user; determining a measurement mode of said user according to the measurement accuracy level of said user and a correspondence between the measurement accuracy level and the measurement mode (S202); and performing the measurement mode of said user (S203).

Description

Method and device for measuring blood pressure

This application claims the priority of the Chinese patent application with the application number 202110350867.X and the invention titled "A blood pressure measurement method and device" filed with the State Intellectual Property Office on March 31, 2021, the entire contents of which are incorporated by reference in in this application.

technical field

The embodiments of the present application relate to the technical field of blood pressure measurement, and in particular, to a blood pressure measurement method and device.

Background technique

Blood pressure is one of the important indicators to measure the health status of the human body. Blood pressure measurement is also a very common and necessary physical examination item in clinical practice. Chronic diseases of the cardiovascular system.

Therefore, how to accurately track the changes of the user's blood pressure without affecting the normal life of the user and improving the user experience is an urgent problem to be solved at present.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a blood pressure measurement method and device, which can accurately track the change trend of a user's blood pressure without affecting the normal life of the user and improve the user experience.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

A first aspect provides a blood pressure measurement method, the blood pressure measurement method includes multiple measurement modes, and the blood pressure measurement method further includes: determining a measurement accuracy level of a user under test; wherein, the measurement accuracy level of the user under test It is used to characterize the blood pressure fluctuation of the user under test; according to the measurement accuracy level of the user under test, the corresponding relationship between the measurement accuracy level and the measurement mode, the measurement mode of the user under test is determined; the measurement mode of the user under test is executed.

Based on the method of the first aspect, the measurement mode of the user under test can be determined according to the measurement accuracy level of the user under test, the corresponding relationship between the measurement accuracy level and the measurement mode, and then the measurement mode of the user under test can be executed, which can ensure accurate Tracking the trend of users' blood pressure changes can also reduce the pain caused by pressure, and effectively improve the user experience.

In a possible design, the determining the measurement accuracy level of the user under test includes: determining the measurement accuracy level of the user under test according to first information; wherein the first information is used to determine the blood pressure fluctuation of the user under test. , the first information includes one or more items of sleep information, time information, blood pressure prediction trend information, and physiological parameter information.

Based on this possible design, the measurement accuracy level of the measured user can be determined according to the first information, and the first information can reflect the blood pressure fluctuation of the measured user, thereby more accurately tracking the blood pressure change trend of the measured user.

In a possible design, determining the measurement accuracy level of the user under test according to the first information includes: the measurement accuracy level is proportional to the fluctuation of blood pressure of the user under test.

Based on this possible design, the blood pressure variation trend of the tested user can be tracked more accurately.

In a possible design, the correspondence between the measurement accuracy level and the measurement mode includes: the first level corresponds to the first mode, the first mode includes not performing blood pressure measurement on the user under test; the second level corresponds to the second mode, the second The mode includes emitting light to the user under test at the first emission frequency; the third level corresponds to the third mode, and the third mode includes emitting light to the user under test at the second emission frequency; the fourth level corresponds to the fourth mode, and the fourth mode includes Pressurize the tested user with the first maximum pressure amplitude; the fifth level corresponds to the fifth mode, and the fifth mode includes pressurizing the tested user with the second maximum pressure amplitude; wherein, the first light-emitting frequency is less than the Two light-emitting frequencies, the first maximum pressure amplitude is smaller than the second maximum pressure amplitude.

Based on this possible design, the blood pressure measurement accuracy level can be determined according to changes in the physiological state of the measured user, thereby realizing flexible switching of measurement modes.

In a second aspect, a blood pressure measurement device is provided, the blood pressure measurement device can execute a variety of measurement modes, the blood pressure measurement device includes: a processing unit, the processing unit is used to determine the measurement accuracy level of the user to be measured; The measurement accuracy level of the measured user is used to characterize the blood pressure fluctuation of the measured user; the processing unit is also used to determine the measured user's measurement according to the measured user's measurement accuracy level, the corresponding relationship between the measurement accuracy level and the measurement mode Mode; measurement unit, the measurement unit is used to execute the measurement mode of the user under test.

In a possible design, the processing unit is used to determine the measurement accuracy level of the user under test, including: the processing unit is used to determine the measurement level of the user under test according to the first information; wherein the first information is used to determine the user under test. The first information includes one or more items of sleep information, time information, blood pressure prediction trend information, and physiological parameter information.

In a possible design, the processing unit is configured to determine the measurement level of the measured user according to the first information, including: the measurement accuracy level is proportional to the blood pressure fluctuation of the measured user.

In a possible design, the correspondence between the measurement accuracy level and the measurement mode includes: the first level corresponds to the first mode, the first mode includes that the measurement unit does not measure the blood pressure of the user under test; the second level corresponds to the second mode, The second mode includes that the measurement unit emits light to the user under test at the first emission frequency; the third level corresponds to the third mode, which includes the measurement unit emits light to the user under test at the second emission frequency; the fourth level corresponds to the fourth mode, the fourth mode includes that the measuring unit pressurizes the user under test with the first maximum pressure amplitude; the fifth level corresponds to the fifth mode, and the fifth mode includes the measuring unit applying pressure to the user under test with the second maximum pressure amplitude wherein, the first light-emitting frequency is smaller than the second light-emitting frequency, and the first maximum pressure amplitude is smaller than the second maximum pressure amplitude.

For the technical effect brought by the second aspect or any possible design of the second aspect, reference may be made to the technical effect brought by the above-mentioned first aspect or any possible design of the first aspect, which will not be repeated.

In a third aspect, a blood pressure measurement device is provided, comprising a memory and a processor, the memory is coupled to the processor; the memory is used for storing computer program codes, and the computer program codes include computer instructions; when the computer instructions are executed by the processor, the blood pressure measurement is performed. The device performs the blood pressure measurement method described in the first aspect or any possible design of the first aspect.

A fourth aspect provides a chip system, which is applied to a blood pressure measurement device; the chip system includes one or more interface circuits and one or more processors; the interface circuit and the processor are interconnected by lines; The memory of the measuring device receives the signal and sends the signal to the processor, where the signal includes the computer instructions stored in the memory; when the processor executes the computer instructions, the blood pressure measuring device executes the first aspect or any possible design of the first aspect The described blood pressure measurement method.

In a fifth aspect, a computer-readable storage medium is provided. The computer-readable storage medium can be a readable non-volatile storage medium. Instructions are stored in the computer-readable storage medium. When the computer-readable storage medium runs on a computer, The computer is caused to execute the blood pressure measurement method described in the first aspect or any possible design of the first aspect.

In a sixth aspect, there is provided a computer program product comprising instructions, which, when executed on a computer, cause the computer to execute the blood pressure measurement method described in the first aspect or any possible design of the first aspect.

Wherein, for the technical effect brought by any one of the design manners in the third aspect to the sixth aspect, reference may be made to the technical effect brought by the above-mentioned first aspect or any possible design of the first aspect, which will not be repeated.

Description of drawings

1 is a schematic structural diagram of a blood pressure measurement device provided by an embodiment of the application;

2 is a schematic diagram of a blood pressure measurement method provided by an embodiment of the present application;

3 is a schematic diagram of a blood pressure double-peak and one-valley trend provided by an embodiment of the present application;

4 is a schematic diagram of a decision measurement accuracy level provided by an embodiment of the present application;

5 is a schematic diagram of yet another decision measurement accuracy level provided by an embodiment of the present application;

6 is a schematic diagram of yet another decision measurement accuracy level provided by an embodiment of the present application;

7 is a schematic diagram of yet another decision measurement accuracy level provided by an embodiment of the present application;

8 is a schematic diagram of yet another decision measurement accuracy level provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a blood pressure measurement device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

Hereinafter, the terms "first", "second", etc. are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of this application, unless stated otherwise, "plurality" means two or more.

In addition, in this application, orientation terms such as "upper" and "lower" are defined relative to the orientation in which the components in the drawings are schematically placed. It should be understood that these directional terms are relative concepts, and they are used for relative In the description and clarification of the drawings, it may change correspondingly according to the change of the orientation in which the components are placed in the drawings.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

Whether the trend of blood pressure changes is normal is a good indicator for judging the severity of hypertension. In clinical practice, a 24-hour ambulatory sphygmomanometer is commonly used in order to continuously track the trend of users' blood pressure. The sphygmomanometer is based on the principle of oscillometric method. Pressurize once every 20 minutes, and then obtain multiple blood pressure measurement values in a day, so as to realize blood pressure trend tracking. The 24-hour ambulatory sphygmomanometer includes a compression cuff, a compression catheter, and a monitor host. The sphygmomanometer is large, and it will cause inconvenience for users to wear it for a long time. At the same time, when the cuff is pressurized to measure blood pressure, the user needs to keep still, and the fixed duration of pressurization will cause inconvenience to the user. For example, frequent compression during periods when blood pressure does not fluctuate much will bring unnecessary compression pain; frequent and deep compression at night is likely to interfere with the user's sleep, further reducing the reliability of blood pressure measurement results.

In order to reduce the disturbance to the user's life, the change trend of blood pressure can be continuously tracked according to the characteristics of blood flow obtained by photoplethysmography (PPG) measurement. However, the current PPG-based real-time blood pressure measurement technology is still immature, and there are still certain defects in measurement accuracy. For example, there may be large errors in blood pressure prediction at some critical moments.

In order to accurately track the change trend of the user's blood pressure without affecting the normal life of the user and improve the user experience, embodiments of the present application provide a blood pressure measurement method and device, the blood pressure measurement method includes multiple measurement modes, and the blood pressure measurement method It also includes: determining the measurement accuracy level of the tested user; wherein, the measurement accuracy level of the tested user is used to represent the blood pressure fluctuation of the tested user; according to the measured user's measurement accuracy level, measurement accuracy level and measurement The corresponding relationship of the modes determines the measurement mode of the user under test; executes the measurement mode of the user under test.

The blood pressure measurement method and device provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

The blood pressure measurement device provided by the embodiment of the present application may be a clinical instrument for measuring blood pressure, or may be an intelligent wearable device, and the embodiment of the present application does not impose any limitation on the specific type of the blood pressure measurement device.

FIG. 1 is a schematic structural diagram of a blood pressure measurement device 100 provided by an embodiment of the present application. Wherein, the blood pressure measurement device 100 shown in FIG. 1 is only an example, and the blood pressure measurement device 100 may have more or less components than those shown in the figure, two or more components may be combined, or Different component configurations are possible. The various components shown in FIG. 1 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.

As shown in FIG. 1 , the blood pressure measurement device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a sensor Module 150, micro-pump airbag 160, button 170, motor 171, indicator 172, display screen 173, etc.

The processor 110 may include one or more processing units, for example, 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), controller, memory, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.

The controller may be the nerve center and command center of the blood pressure measurement device 100 . The controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in processor 110 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 110 . If the processor 110 needs to use the instruction or data again, it can be called directly from memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby increasing the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces. The interface 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 transceiver (universal asynchronous transmitter) receiver/transmitter, UART) interface, mobile industry processor interface (mobile industry processor interface, MIPI), general-purpose input/output (general-purpose input/output, GPIO) interface, and/or USB interface 130, etc.

It can be understood that, the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration, and does not constitute a structural limitation of the blood pressure measurement device 100 . In other embodiments, the blood pressure measurement device 100 may also adopt different interface connection manners in the foregoing embodiments, or a combination of multiple interface connection manners.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the blood pressure measuring device 100 . The external memory card communicates with the processor 110 through the external memory interface 120 to realize the data storage function.

Internal memory 121 may be used to store computer executable program code, which includes instructions. The processor 110 executes various functional applications and data processing of the blood pressure measurement device 100 by executing the instructions stored in the internal memory 121 . For example, in this embodiment of the present application, the processor 110 may execute instructions stored in the internal memory 121, and the internal memory 121 may include a program storage area and a storage data area.

The storage program area may store an operating system, an application program required for at least one function, and the like. The storage data area may store data and the like created during the use of the blood pressure measuring device 100 . In addition, the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), and the like.

The charging management module 140 is used to receive charging input from the charger. The charger may be a wireless charger or a wired charger. While the charging management module 140 charges the battery 142 , it can also supply power to the electronic device through the power management module 141 .

The power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 . The power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the display screen 171, the micro-pump airbag 160, and the like. In some embodiments, the power management module 141 and the charging management module 140 may also be provided in the same device.

The sensor module 150 may include a PPG sensor 150A, an accelerometer (ACC) sensor 150B, a pressure sensor 150C, and the like. The blood pressure measurement device 100 can obtain physiological parameters such as blood pressure, heart rate, blood oxygen, etc. of the measured user through the PPG sensor 150A. Optionally, the blood pressure measurement device 100 may further include other physiological information measurement sensors such as a heart rate sensor, a blood oxygen sensor, and the like.

The micro-pump airbag 160 can be used to accurately measure the blood pressure value of the user under test at a critical moment by means of pressure measurement. Optionally, the micro-pump airbag 160 may include a cuff, a micro-pump, a pressure sensor and other components. The cuff cooperates with the micro-pump to inflate and deflate. The principle of the method can accurately measure the blood pressure value of the tested user.

The keys 170 include a power-on key, a volume key, and the like. The keys 170 may be mechanical keys. It can also be a touch key. Motor 171 can generate vibrating cues. The motor 171 can be used to measure vibration cues, as well as touch vibration feedback. The indicator 172 can be an indicator light, which can be used to indicate a charging state, a change in power, or a message or the like.

The display screen 173 is used for displaying images, measurement values, etc., and the display screen 173 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light). emitting diode, AMOLED), flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) and so on. In some embodiments, the blood pressure measurement device 100 may include 1 or N display screens 173 , where N is a positive integer greater than 1. For example, the display screen 173 may be used to display a blood pressure change curve obtained by continuous measurement or to display a measured blood pressure value, and the like.

It can be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the blood pressure measurement device 100 . In other embodiments of the present application, the blood pressure measurement device 100 may include more or less components than shown, or combine some components, or separate some components, or arrange different components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

In the following embodiments, the method of the embodiment of the present application will be described by taking the above-mentioned blood pressure measurement device as the blood pressure measurement device 100 shown in FIG. 1 as an example.

Referring to FIG. 2, an embodiment of the present application provides a blood pressure measurement method, including:

S201. The blood pressure measurement device determines the measurement accuracy level of the measured user.

The measurement accuracy level of the user under test may be used to characterize the fluctuation of blood pressure of the user under test. The higher the measurement accuracy level, the more accurate the blood pressure measurement result, so the blood pressure measurement result can be closer to the real health status of the measured user, and the data reference value for health assessment is higher. The measurement accuracy level is directly proportional to the blood pressure fluctuation of the measured user. The larger the blood pressure fluctuation, the higher the measurement accuracy level. On the contrary, the smaller the blood pressure fluctuation, the lower the measurement accuracy level.

For example, when the measured user is in good physical condition, the fluctuation of the blood pressure value is small, and the continuous change trend of the blood pressure within a certain period of time is relatively stable. The accuracy can accurately reflect the stable trend of the real blood pressure value of the measured user during this time period.

For another example, when the physical condition of the measured user is poor, the blood pressure value rises sharply, and the blood pressure fluctuates greatly within a certain period of time. The user's real blood pressure changes. Therefore, in this time period, it is necessary to decide to use a higher measurement accuracy level for the measured user to obtain the trend of rapid changes in the measured user's real blood pressure value during this time period.

Exemplarily, the blood pressure measurement device may determine the measurement accuracy level of the measured user according to the first information.

Wherein, the first information may be used to determine the blood pressure fluctuation of the measured user, and the first information may include one or more of sleep information, time information, blood pressure prediction trend information, and physiological parameter information.

The sleep information may indicate the current sleep state of the tested user, and the sleep state may include any state among deep sleep state, light sleep state, and awake state.

It should be noted that, for the manner in which the blood pressure measurement device obtains the sleep information of the user to be measured, reference may be made to any existing sleep monitoring technology, which is not specifically limited in this embodiment of the present application.

The time information may be used to indicate a measurement moment, and the measurement moment may be in any one of the preset first time interval and the second time interval. The first time interval includes a peak time period and a valley time period, that is, the first time interval includes a double peak and a valley time period, and the second time interval includes a general time period other than the peak time period and the valley time period, that is, the second time interval The time interval includes a non-double peak and a valley time period. Specifically, if the blood pressure value at any time is greater than the first threshold in a continuous period of time, the time period is the peak time period; the blood pressure value at any time is less than the second threshold value, then the time period is the valley time period ; The time periods other than the peak time period and the valley time period are general time periods. The blood pressure of normal people generally shows a trend of two peaks and one valley, and there is an obvious circadian activity pattern. This regular change of blood pressure can conform to the changes in the daily activity pattern of the human body, and play a role in protecting the structure and function of organs such as the heart, brain, and kidney.

For example, Figure 3 is a schematic diagram of the trend of blood pressure with two peaks and one valley in one day. From Figure 3, it can be seen that the blood pressure has obvious double peaks in the morning from 6:00 to 10:00 and from 16:00 to 18:00 in the evening. :00～4:00 is at a low point. Then the first time interval may include 2:00～4:00, 6:00～10:00, 16:00～18:00, and the second time interval may include 0:00～2:00, 4:00～6 :00, 10:00～16:00, 18:00～24:00.

The blood pressure prediction trend information can be used to indicate whether the current blood pressure trend of the measured user is in a double peak and a valley. Specifically, the blood pressure measurement device can predict whether the current blood pressure trend is in a double peak and a valley according to the received PPG signal.

The physiological parameter information may include one or more of the measured user's current heart rate, blood oxygen, pressure, and PPG blood pressure value, which is not specifically limited in this application. Physiological parameter information may be collected and obtained by a variety of physiological information sensors included in the sensor module 150 in FIG. 1 . Optionally, the physiological parameter information may also include other physiological parameters such as respiration rate, human body acceleration value, etc. In the embodiments of this application, only some of the physiological parameters included in the physiological parameter information are used as examples. In practical applications, the physiological parameter information includes but is not limited to. Physiological parameters involved in the examples of this application.

Specifically, for the implementation process of the blood pressure measurement device determining the measurement accuracy level of the measured user according to the first information, reference may be made to the following manners 1, 2, and 3.

S202: The blood pressure measurement device determines the measurement mode of the user to be measured according to the measurement accuracy level of the user to be measured and the corresponding relationship between the measurement accuracy level and the measurement mode.

Wherein, different measurement accuracy levels correspond to different measurement modes of the blood pressure measurement device. The correspondence between the measurement accuracy level and the measurement mode may include: the first level corresponds to the first mode, and the first mode includes not performing blood pressure measurement on the user under test; the second level corresponds to the second mode, and the second mode includes the first light emission The frequency emits light to the user under test; the third level corresponds to the third mode, and the third mode includes emitting light to the user under test at the second emission frequency; the fourth level corresponds to the fourth mode, and the fourth mode includes the first maximum pressure amplitude. The fifth level corresponds to the fifth mode, and the fifth mode includes pressurizing the user under test with the second maximum pressure amplitude; wherein, the first light-emitting frequency is lower than the second light-emitting frequency, and the first light-emitting frequency is lower than the second light-emitting frequency The maximum pressure amplitude is less than the second maximum pressure amplitude.

Optionally, the corresponding relationship between the measurement accuracy level and the measurement mode in this embodiment of the present application may be pre-configured.

Specifically, the first mode includes that the blood pressure measurement device does not measure the user under test, and when the first mode is applied, all measurement modes of the blood pressure measurement device can be turned off in a short time, thereby increasing the battery life of the blood pressure measurement device.

Specifically, the second mode and the third mode belong to the PPG measurement mode. In the second mode, the blood pressure measurement device emits light to the user under test at the first emission frequency, and in the third mode, the blood pressure measurement device emits light to the user under test at the second emission frequency. Light is emitted, and the first light-emitting frequency is smaller than the second light-emitting frequency. For example, the first light-emitting frequency may be 100 Hz, and the second light-emitting frequency may be 500 Hz. The higher the light-emitting frequency, the higher the measurement accuracy of the blood pressure measurement device. Therefore, the blood pressure measurement result in the third mode is higher than the blood pressure measurement result in the second mode. more precise.

Specifically, the fourth mode and the fifth mode belong to the micropump pressurization measurement mode. In the fourth mode, the blood pressure measurement device pressurizes the measured user with the first maximum pressure amplitude. In the fifth mode, the blood pressure measurement device The blood pressure measuring device pressurizes the measured user with a second maximum pressure amplitude, and the first maximum pressure amplitude is smaller than the second maximum pressure amplitude. That is, in the fourth mode, a shallow pressure measurement is performed on the measured user, and in the fifth mode, a deep pressure measurement is performed on the measured user. The greater the pressure amplitude, the higher the accuracy of the blood pressure measurement result. 's blood pressure measurement results are more accurate than those in the fourth mode.

S203 , the blood pressure measurement apparatus executes the measurement mode of the measured user.

Based on the method shown in FIG. 2 , the blood pressure measurement device can determine the measurement accuracy level of the user under test according to the first information, and determine the user under test according to the measurement accuracy level of the user under test, the corresponding relationship between the measurement accuracy level and the measurement mode. The measurement mode of the user under test can then be executed, which can ensure accurate tracking of the change trend of the user's blood pressure, reduce the pain caused by pressure, and effectively improve the user experience.

In the method shown in Figure 2, the first, second, and third methods involved are described below:

Mode 1: The blood pressure measurement device can obtain the sleep information of the user under test according to the received PPG signal, and further determine the measurement accuracy level of the user under test according to the sleep information, time information and physiological parameter information of the user under test.

FIG. 4 is a schematic diagram of a decision measurement accuracy level provided by an embodiment of the present application. As shown in FIG. 4 , the blood pressure measurement device determines whether the user under test is in a sleep state through the received PPG signal. If the user under test is in a sleep state It is necessary to further determine whether the tested user is in a deep sleep state. When the tested user is in a light sleep state or an awake state, it is necessary to further determine whether the current measurement moment is in a double-peak and one-valley period with large blood pressure fluctuations.

The details of determining the measurement accuracy level of the user under test in Figure 4 are as follows:

If the measured user is in a deep sleep state, the blood pressure measurement device first decides that the measured user's measurement accuracy is the fifth level, and then decides that the measured user's measurement accuracy level is the second level. That is, the accurate blood pressure value is obtained by deep compression once, and then the blood pressure can be measured by PPG at low frequency due to the low blood pressure and small fluctuation in the deep sleep state.

If the measured user is in a light sleep state and the current measurement time is in the first time interval, the blood pressure measuring device first decides that the measured user's measurement accuracy is at the fourth level, and then decides that the measured user's measurement accuracy is at the third level. . That is, in order to avoid disturbing the sleep of the tested user in the light sleep state, a shallow pressure is applied first, and then a more accurate continuous blood pressure measurement value is obtained through the high-frequency PPG measurement.

If the measured user is in a light sleep state and the current measurement moment is in the second time interval, the blood pressure measurement device determines that the measurement accuracy of the measured user is the third level.

If the measured user is in an awake state and the current measurement moment is in the first time interval, the blood pressure measurement device determines that the measurement accuracy of the measured user is at the fifth level. That is, since the blood pressure fluctuates greatly in the first time interval, a more accurate blood pressure measurement value is obtained by direct deep compression measurement.

If the measured user is in an awake state, the current measurement moment is in the second time interval, and one or more parameters in the measured user's physiological parameter information are in a stable state, the blood pressure measurement device determines that the measured user's measurement accuracy is the first one level. That is, when the measured user is awake, when the blood pressure and other physiological parameters do not fluctuate greatly, the measurement of the measured user can be stopped in a short time, thereby saving the power consumption of the blood pressure measuring device and increasing the blood pressure measuring device. of battery life.

The above method 1 can determine the required measurement accuracy level according to the current sleep information of the tested user, so that different users or the same user can adaptively switch the measurement accuracy level in different sleep states, which can be achieved without disturbing the user's sleep. , combining pressure measurement and PPG measurement for more accurate blood pressure tracking.

Method 2: The blood pressure measurement device can predict whether the blood pressure trend of the measured user is in a double peak and a valley at the current measurement time according to the received PPG signal, and then further determine the measurement accuracy level of the measured user according to the time information, sleep information, and physiological parameter information. .

FIG. 5 is a schematic diagram of another decision measurement accuracy level provided by an embodiment of the present application. As shown in FIG. 5 , the blood pressure measurement device judges whether the current blood pressure trend is in a double peak and a valley through the received PPG signal, and if so, further steps are required. It is judged whether the current measurement moment is in a period of two peaks and one valley with large blood pressure fluctuations, if so, the current measurement moment is in the first time interval, otherwise the current measurement moment is in the second time interval. If the current measurement moment is in the second time interval, the sleep state of the user under test needs to be further judged, and the process may refer to the above-mentioned method 1.

The details of determining the measurement accuracy level of the user under test in Figure 5 are as follows:

If the blood pressure trend of the measured user is in two peaks and one valley, and the current measurement moment is in the second time interval, the blood pressure measurement device decides that the measurement accuracy of the measured user is the third level.

If the blood pressure trend of the measured user is in two peaks and one valley, the current measurement moment is in the first time interval, and the measured user is in an awake state, the blood pressure measurement device decides that the measurement accuracy of the measured user is the fifth level.

If the blood pressure trend of the measured user is in two peaks and one valley, the current measurement time is in the first time interval, and the measured user is in a deep sleep state, the blood pressure measurement device first decides that the measured user's measurement accuracy is the fifth level, and then The measurement accuracy level of the decision-making user is the second level.

If the blood pressure trend of the measured user is in two peaks and one valley, the current measurement time is in the first time interval, and the measured user is in a light sleep state, the blood pressure measurement device decides that the measured user's measurement accuracy is the third level.

If the measured user's blood pressure trend is in a non-double peak and one valley, and the measured user is in a deep sleep state, the blood pressure measurement device first decides that the measured user's measurement accuracy is the fifth level, and then decides the measured user's measurement accuracy level. for the second level.

If the blood pressure trend of the measured user is in a non-double peak and a valley, and the measured user is in a light sleep state, the blood pressure measurement device determines that the measurement accuracy of the measured user is the third level.

If the blood pressure trend of the measured user is in a non-double peak and a valley, the measured user is in an awake state, and one or more parameters in the measured user's physiological parameter information are in a stable state, the blood pressure measurement device decides the measurement of the measured user. Accuracy is first class.

The above-mentioned method 2 can determine the required measurement accuracy level according to the measurement time information. When it is captured that the user's blood pressure trend is in a double peak and a valley and the measurement moment is in the first time interval, the blood pressure measurement device can decide to enable a higher accuracy level, In this way, the tracking measurement of the real peak and trough values of blood pressure in the user's day can be realized, which can help to find potential hypertensive patients.

Mode 3: The blood pressure measurement device may determine the measurement accuracy level of the measured user according to one or more physiological parameters in the physiological parameter information.

FIG. 6 is a schematic diagram of another decision measurement accuracy level provided by an embodiment of the present application. As shown in FIG. 6 , the blood pressure measurement device predicts whether the current blood pressure trend is in a double peak and a valley through the received PPG signal. The blood pressure trend is in a non-double peak and a valley, and the sleep state of the tested user is further judged. When the tested user is in a awake state, it is further judged whether the physiological parameters in the physiological parameter information have changed abruptly, and then the measurement accuracy level of the tested user is determined. .

The exercise state information can indicate the current exercise state of the user under test. For example, within a certain period of time, the heart rate of the user under test increases suddenly, and the acceleration value of the human body also increases, and the blood pressure measurement device can determine the user within the current period of time. in motion.

The specific conditions for determining the measurement accuracy level of the user under test in Figure 6 are as follows:

If the blood pressure trend of the measured user is in a non-double peak and a valley, the measured user is in an awake state, one or more parameters in the measured user's physiological parameter information are in a stable state, and there is no sudden change, the blood pressure measurement device will decide The measurement accuracy of the tested user is the first level.

If the blood pressure trend of the tested user is in a non-double peak and a valley, the tested user is in a awake state, one or more parameters in the tested user's physiological parameter information have a sudden change, and the tested user is in an exercise state, the blood pressure measurement The measurement accuracy of the device to determine the measured user is the third level.

For example, FIG. 7 is a schematic diagram of yet another decision measurement accuracy level provided in an embodiment of the present application. As shown in FIG. 7 , when the blood pressure measurement device detects a sudden increase in the heart rate of the user under test through the PPG signal, and the acceleration value (ACC) of the human body also increases, it is determined that the user under test is in a state of exercise. The impact of the user's normal life, the blood pressure measurement device determines the measurement accuracy of the measured user to be the third level, that is, the pressure measurement is not performed during the exercise state of the measured user, and the influence of motion artifacts on the PPG signal is considered, and the PPG is turned on. High frequency measurement mode.

If the blood pressure trend of the measured user is in a non-double peak and a valley, the measured user is in a awake state, one or more parameters in the measured user's physiological parameter information have a sudden change, and the measured user is in a non-exercise state, the blood pressure The measurement device determines that the measurement accuracy of the user under test is the fifth level.

For example, FIG. 8 is a schematic diagram of yet another decision measurement accuracy level provided in an embodiment of the present application. As shown in Figure 8, the blood pressure measurement device detects a sudden change in the blood oxygen value of the measured user through the PPG signal, and the user is in a non-exercise state. At this time, it is decided that the measurement accuracy of the measured user will be the fifth level to obtain The most accurate measurement results.

The above method 3 combines the changes of various physiological parameters of the user to determine the current physiological state of the user, and further decides the required blood pressure measurement accuracy level, which can not only ensure accurate tracking of the user's blood pressure changes, but also reduce the pain caused by pressure.

Exemplarily, the blood pressure measurement device may further determine the measurement accuracy level of the measured user according to multiple items of sleep information, time information, blood pressure prediction trend information, and physiological parameter information. For example, the blood pressure measurement device may determine the measurement accuracy level of the measured user according to sleep information and time information, or the blood pressure measurement device may determine the measurement accuracy level of the measured user according to time information, blood pressure prediction trend information and physiological parameter information , or, the blood pressure measurement device may determine the measurement accuracy level of the user under test according to time information and physiological parameter information, and the specific implementation process can refer to the above-mentioned method 1, method 2, and method 3, which will not be repeated.

In this embodiment of the present application, functional modules can be divided into slave tags or network devices according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

Fig. 9 shows a structural diagram of a blood pressure measuring device 900, which can be used to perform the functions of the blood pressure measuring device involved in the above embodiments. As an implementable manner, the communication apparatus 900 shown in FIG. 9 includes: an acquisition unit 901 , a processing unit 902 , and a measurement unit 903 .

The obtaining unit 901 may be configured to obtain first information, where the first information may include one or more items of sleep information, time information, and physiological parameter information.

The processing unit 902 can be used to determine the measurement level of the user under test according to the first information; the processing unit 902 can also be used to determine the measurement accuracy level of the user under test, the corresponding relationship between the measurement accuracy level and the measurement mode. The measurement mode of the user under test, wherein the measurement accuracy level of the user under test is used to characterize the blood pressure fluctuation of the user under test.

The measurement unit 903 may be configured to execute the measurement mode of the user under test.

Embodiments of the present application also provide a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by instructing the relevant hardware by a computer program, the program can be stored in the above computer-readable storage medium, and when the program is executed, it can include the processes in the above method embodiments. . The computer-readable storage medium may be the terminal in any of the foregoing embodiments, for example, an internal storage unit including a data sending end and/or a data receiving end, such as a hard disk or a memory of the terminal. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned terminal, such as a plug-in hard disk equipped on the above-mentioned terminal, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, flash memory card (flash card) etc. Further, the above-mentioned computer-readable storage medium may also include both an internal storage unit of the above-mentioned terminal and an external storage device. The above-mentioned computer-readable storage medium is used for storing the above-mentioned computer program and other programs and data required by the above-mentioned terminal. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

The embodiment of the present application also provides a computer program product containing instructions, when the instructions are executed on a computer, the computer is made to execute the blood pressure measurement method described in any embodiment of the present application.

It should be understood that the term "and/or" in this document is only an association relationship to describe associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The steps in the method of the embodiment of the present application may be adjusted, combined and deleted in sequence according to actual needs.

Units in the apparatus of the embodiment of the present application may be combined, divided, and deleted according to actual needs.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: The technical solutions described in the embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A blood pressure measurement method, characterized in that the blood pressure measurement method includes multiple measurement modes, and the blood pressure measurement method further includes:

determining the measurement accuracy level of the tested user; wherein, the measurement accuracy level of the tested user is used to characterize the blood pressure fluctuation of the tested user;

determining the measurement mode of the user under test according to the measurement accuracy level of the user under test and the corresponding relationship between the measurement accuracy level and the measurement mode;

Execute the measurement mode of the user under test.
The method according to claim 1, wherein the determining the measurement accuracy level of the user under test comprises:

determining the measurement accuracy level of the user under test according to the first information;

Wherein, the first information is used to determine the blood pressure fluctuation of the measured user, and the first information includes one or more of sleep information, time information, blood pressure prediction trend information, and physiological parameter information.
The method according to claim 2, wherein the determining the measurement accuracy level of the user under test according to the first information comprises:

The measurement accuracy level is proportional to the blood pressure fluctuation of the measured user.
The method according to claim 1, wherein the corresponding relationship between the measurement accuracy level and the measurement mode comprises:

The first level corresponds to a first mode, and the first mode includes not performing blood pressure measurement on the user under test;

The second level corresponds to a second mode, and the second mode includes emitting light to the user under test at a first emission frequency;

The third level corresponds to a third mode, and the third mode includes emitting light to the user under test at a second lighting frequency;

The fourth level corresponds to a fourth mode, and the fourth mode includes pressurizing the tested user with a first maximum pressure amplitude;

The fifth level corresponds to a fifth mode, and the fifth mode includes pressurizing the user under test with a second maximum pressure amplitude;

Wherein, the first light-emitting frequency is smaller than the second light-emitting frequency, and the first maximum pressure amplitude is smaller than the second maximum pressure amplitude.
A blood pressure measurement device, characterized in that the blood pressure measurement device can perform multiple measurement modes, and the blood pressure measurement device includes:

a processing unit, the processing unit is used to determine the measurement accuracy level of the user under test; wherein, the measurement accuracy level of the user under test is used to represent the blood pressure fluctuation of the user under test; the processing unit also uses determining the measurement mode of the user under test according to the measurement accuracy level of the user under test, the corresponding relationship between the measurement accuracy level and the measurement mode;

a measurement unit, where the measurement unit is configured to execute a measurement mode of the user under test.
The device according to claim 5, wherein the processing unit is configured to determine the measurement accuracy level of the user under test, comprising:

The processing unit is configured to determine the measurement level of the user under test according to the first information; wherein the first information is used to determine the blood pressure fluctuation of the user under test, and the first information includes sleep information, time One or more items of information, blood pressure prediction trend information, and physiological parameter information.
The device according to claim 6, wherein the processing unit is configured to determine the measurement level of the user under test according to the first information, comprising:

The measurement accuracy level is proportional to the blood pressure fluctuation of the measured user.
The device according to claim 5, wherein the corresponding relationship between the measurement accuracy level and the measurement mode comprises:

The first level corresponds to a first mode, and the first mode includes that the measurement unit does not measure the blood pressure of the user under test;

The second level corresponds to a second mode, and the second mode includes that the measurement unit emits light to the user under test at a first emission frequency;

The third level corresponds to a third mode, and the third mode includes that the measurement unit emits light to the user under test at a second emission frequency;

The fourth level corresponds to a fourth mode, and the fourth mode includes that the measuring unit pressurizes the measured user with a first maximum pressure amplitude;

The fifth level corresponds to a fifth mode, and the fifth mode includes that the measurement unit pressurizes the measured user with the second maximum pressure amplitude;

Wherein, the first light-emitting frequency is smaller than the second light-emitting frequency, and the first maximum pressure amplitude is smaller than the second maximum pressure amplitude.
A blood pressure measurement device, characterized in that it comprises a memory and a processor, wherein the memory is coupled to the processor; the memory is used for storing computer program codes, and the computer program codes include computer instructions; when the computer instructions When executed by the processor, the blood pressure measurement device is caused to execute the blood pressure measurement method according to any one of claims 1-4.
A chip system, characterized in that the chip system is applied to a blood pressure measurement device; the chip system includes one or more interface circuits and one or more processors; the interface circuit and the processor are interconnected by lines ; the interface circuit is configured to receive a signal from the memory of the blood pressure measuring device and send the signal to the processor, the signal comprising computer instructions stored in the memory; when the processor executes the When instructed by the computer, the blood pressure measurement device performs the blood pressure measurement method according to any one of claims 1-4.
A computer-readable storage medium, comprising computer instructions, which, when executed on a computer, cause the computer to execute the blood pressure measurement method according to any one of claims 1-4.
A computer program product, characterized in that, when the computer program product runs on a computer, the computer is made to execute the blood pressure measurement method according to any one of claims 1-4.