Blood pressure measuring method, electronic equipment and storage medium

Abstract

The invention provides a blood pressure measuring method, electronic equipment and a storage medium. The wearable device is provided with one or more sensors, when blood pressure is measured, the wearable device can obtain sensor data and monitor the signal quality of the sensor data, and when the signal quality of the sensor data does not meet the requirement, the wearable device can prompt a user to adjust the posture. The signal quality of the sensor data meets the requirement. The wearable device may then estimate a blood pressure value of the user based on the sensor data for which the signal quality satisfies the requirement. Through the method, the comfort of measuring the blood pressure by the user through the wearable device is improved, and the accuracy of estimating the blood pressure value of the user based on the sensor data by the wearable device is also improved.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a blood pressure measurement method, electronic device, and storage medium. Background Art

[0002] With the improvement of living standards, people's physical health has received more and more attention, and the number of users with hypertension has increased. Monitoring blood pressure is of great significance.

[0003] To conveniently monitor blood pressure, wearable devices can use an airbag to measure blood pressure. For example, the airbag within the wearable device can be inflated with linear pressure increase. This airbag blocks arterial blood flow, generating oscillation waves of varying pressures, which can then be used to determine information such as systolic and diastolic blood pressure. However, the inflation and deflation process can compress the user's blood vessels, resulting in a poor user experience. Further research is needed to develop a portable blood pressure measurement device that provides high user comfort. Summary of the Invention

[0004] This application provides a blood pressure measurement method, electronic device, and storage medium, which improve the comfort and accuracy of users measuring blood pressure through wearable devices.

[0005] The present application provides a blood pressure measurement method, an electronic device, and a storage medium. The wearable device can monitor the quality of the signal used to measure blood pressure, so that the signal quality meets the requirements, thereby improving the accuracy of blood pressure measurement.

[0006] In a first aspect, the present application provides a blood pressure measurement method, which is applied to a wearable device including a heart rate sensor and a pressure sensor. The method includes: obtaining a first pressure value of the heart rate sensor through the pressure sensor; and prompting the user to increase or decrease the pressing force of the heart rate sensor according to the first pressure value.

[0007] Optionally, the heart rate sensor can be any one of a photoplethysmography (PPG) sensor, a laser sensor, an ultrasonic sensor, and a magnetic induction sensor. The embodiment of the present application is described by taking the heart rate sensor being a PPG sensor and the heart rate data being a PPG signal as an example.

[0008] Optionally, a first button is provided on the side of the watch body of the wearable device, and a heart rate sensor and a pressure sensor are provided on the first button. When blood pressure needs to be measured, the user can press the first button with one finger, and the wearable device can obtain the user's blood pressure value based on the physiological signal collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0009] Optionally, a heart rate sensor and a pressure sensor are provided on the wearing surface of the wearable device. When blood pressure needs to be measured, the wearable device can obtain the user's blood pressure value based on the physiological signals collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0010] Optionally, the wearable device can directly obtain the first pressure value of the heart rate sensor through the pressure sensor, and prompt the user to adjust the pressure value to within a preset range when the first pressure value is not within the preset range. The preset range can be a pressure value greater than a first threshold and less than a second threshold.

[0011] The amplitude of the physiological signal is related to the magnitude of the pressure value. When the first pressure value is within a preset range, the amplitude of the physiological signal collected by the heart rate sensor is greater than the preset amplitude, and the wearable device can measure blood pressure with high accuracy based on the physiological signal collected by the heart rate sensor and the pressure value.

[0012] Optionally, the wearable device may also first determine the amplitude of the physiological data collected by the heart rate sensor. When the amplitude of the physiological data collected by the heart rate sensor is less than a preset amplitude, the wearable device obtains a first pressure value of the heart rate sensor through the pressure sensor. When the first pressure value is not within a preset range, the user is prompted to adjust the pressure value to within the preset range.

[0013] Optionally, the wearable device may first obtain the pressure value of the heart rate sensor through the pressure sensor. If the first pressure value is not within a preset range, the wearable device may prompt the user to adjust the pressure value to within the preset range. The wearable device may then determine whether the amplitude of the physiological data collected by the heart rate sensor is greater than a preset amplitude. If the amplitude of the physiological data collected by the heart rate sensor is less than the preset amplitude, the wearable device may obtain the first pressure value of the heart rate sensor through the pressure sensor again, and based on the first pressure value, prompt the user to increase or decrease the pressing force so that the amplitude of the physiological data collected by the heart rate sensor is greater than the preset amplitude.

[0014] Based on the above analysis, during the blood pressure measurement process, if the first pressure value collected by the pressure sensor is not within the preset range, the wearable device can prompt the user to adjust the pressing force, such as increasing the pressing force or decreasing the pressing force, so that the first pressure value is within the preset range, so as to obtain a physiological signal collected by the heart rate sensor with an amplitude greater than the preset value, so as to improve the accuracy of the blood pressure value measured by the wearable device based on the physiological signal collected by the heart rate sensor and the first pressure value.

[0015] In combination with the first aspect, in a possible implementation, the electronic device further includes an electrocardiogram sensor, and the method further includes: detecting blood pressure based on a first physiological signal obtained by the heart rate sensor, a second pressure value of the pressure sensor, and a second physiological signal obtained by the electrocardiogram sensor.

[0016] Optionally, the electrocardiogram sensor may be an ECG sensor.

[0017] Among them, the second pressure value is the pressure value collected by the pressure sensor after the user adjusts the pressing force. The amplitude of the first physiological signal is greater than the preset amplitude, and the amplitude of the first physiological signal is stable, and the amplitude of the second physiological signal obtained by the electrocardiogram sensor is also stable. In this way, the wearable device can obtain blood pressure values ​​based on the first physiological signal, the second pressure value and the second physiological signal. On the one hand, compared with the method of measuring blood pressure with an airbag, the comfort of measuring blood pressure based on the first physiological signal, the second pressure value and the second physiological signal in this application is higher. On the other hand, the quality of the first physiological signal, the second pressure value and the second physiological signal all meet the requirements, which improves the accuracy of the wearable device in measuring blood pressure values ​​based on the first physiological signal, the second pressure value and the second physiological signal.

[0018] In combination with the first aspect, in one possible implementation, the user is prompted to increase or decrease the pressing force of the heart rate sensor according to the first pressure value, specifically including: when it is detected that the first pressure value is greater than a first threshold, the user is prompted to reduce the pressing force of the heart rate sensor; when it is detected that the first pressure value is less than a second threshold, the user is prompted to increase the pressing force of the heart rate sensor.

[0019] When the first pressure value is greater than the first threshold and less than the second threshold, it can be considered that the amplitude of the physiological signal collected by the heart rate sensor is greater than the preset amplitude. Therefore, during the blood pressure measurement process, the wearable device can prompt the user to increase or decrease the pressing force based on the magnitude of the first pressure value, so that the pressure value collected by the pressure sensor is greater than the first threshold and less than the second threshold. In turn, the wearable device can obtain a physiological signal with an amplitude greater than the preset amplitude. Physiological signals with an amplitude greater than the preset amplitude have stronger anti-interference capabilities and will not be drowned out by noise, thereby improving the accuracy of blood pressure measurement by the wearable device based on the physiological signal collected by the heart rate sensor.

[0020] In combination with the first aspect, in one possible implementation method, obtaining the first pressure value of the heart rate sensor through the pressure sensor specifically includes: determining whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude; if it is less than the preset amplitude, obtaining the first pressure value of the heart rate sensor through the pressure sensor.

[0021] Optionally, before obtaining the first pressure value of the heart rate sensor through the pressure sensor, the wearable device can first obtain the amplitude of the third physiological signal obtained by the heart rate sensor. And based on the amplitude of the third physiological signal, it is confirmed whether the pressing force needs to be adjusted. When the amplitude of the third physiological signal is less than the preset value, it means that the user's pressing force is too large or too small, causing the amplitude of the third physiological signal to be less than the preset value. The wearable device can then obtain the first pressure value of the heart rate sensor. So as to prompt the user to increase or decrease the pressing force based on the first pressure value. In other words, the wearable device can first monitor the amplitude of the third physiological signal obtained by the heart rate sensor, and then confirm whether to adjust the pressing force based on the amplitude of the third physiological signal.

[0022] Optionally, the wearable device may first obtain the pressure value of the heart rate sensor through the pressure sensor, adjust the pressure value to within a preset range, and then obtain the amplitude of the third physiological signal obtained by the heart rate sensor. This is because the degree of contraction of blood vessels in different users is different. Even if the pressure value is within the preset range, the amplitude of the physiological signal obtained by the heart rate sensor is still less than the preset amplitude. Therefore, after adjusting the pressure value of the pressure sensor to within the preset range, the wearable device still needs to monitor whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude. When it is less than the preset amplitude, the wearable device can obtain the first pressure value of the heart rate sensor again through the pressure sensor, and prompt the user to increase or decrease the pressing force based on the first pressure value, so that the amplitude of the physiological signal obtained by the heart rate sensor is greater than the preset amplitude. In other words, the wearable device can first monitor the pressing force, adjust the pressing force to within the preset range, and then obtain the amplitude of the third physiological signal, and confirm whether to further adjust the pressing force based on the amplitude of the third physiological signal.

[0023] In combination with the first aspect, in one possible implementation, after prompting the user to increase or decrease the pressing force of the heart rate sensor according to the first pressure value, the method also includes: determining whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude; if it is greater than the preset amplitude, obtaining the first physiological signal through the heart rate sensor.

[0024] Optionally, if the amplitude of the third physiological signal is less than a preset amplitude, the user is prompted to increase or decrease the pressing force of the heart rate sensor.

[0025] In this way, the wearable device can adjust the pressing force to obtain a first physiological signal with an amplitude greater than a preset amplitude.

[0026] In combination with the first aspect, in a possible implementation manner, the method further includes: displaying a pressure indication bar, where the pressure indication bar is used to indicate a pressure value of the heart rate sensor obtained by the pressure sensor.

[0027] Optionally, the wearable device may further display a pressure threshold interval to prompt the user whether the pressure value corresponding to the current pressing force is within the pressure threshold interval.

[0028] In combination with the first aspect, in one possible implementation, before the heart rate sensor obtains the first physiological signal, the method also includes: determining whether the amplitude of the physiological signal obtained by the heart rate sensor is stable; if it is unstable, determining whether the user is in a state of motion based on the sound signal and motion data collected by the microphone; if the user is in a state of motion, prompting the user to remain still.

[0029] When the wearable device includes multiple heart rate sensors, the stable amplitude of the physiological signal acquired by the heart rate sensors may refer to the stable amplitude of the physiological signal acquired by any one of the multiple heart rate sensors, or the stable amplitude of the physiological signal acquired by all the multiple heart rate sensors.

[0030] The motion state may refer to the current state of the user being in motion, or may refer to the state of the user being in motion within a previous period of time.

[0031] Optionally, the wearable device can confirm whether the user is in motion based on motion data collected by the motion sensor.

[0032] Optionally, the wearable device may also detect whether the amplitude of the physiological signal is stable before obtaining the first pressure value.

[0033] In second aspect, the present application provides a blood pressure measurement method, which is applied to a wearable device including a heart rate sensor, an electrocardiogram sensor and a pressure sensor. The method includes: obtaining a first pressure value of the heart rate sensor through the pressure sensor; detecting blood pressure based on a first physiological signal obtained by the heart rate sensor, a first pressure value, and a second physiological signal obtained by the electrocardiogram sensor.

[0034] Optionally, the wearable device is a watch or a bracelet.

[0035] Optionally, a first button is provided on the side of the watch body of the wearable device, and a heart rate sensor and a pressure sensor are provided on the first button. When blood pressure needs to be measured, the user can press the first button with one finger, and the wearable device can obtain the user's blood pressure value based on the physiological signal collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0036] Optionally, a heart rate sensor and a pressure sensor are provided on the wearing surface of the wearable device. When blood pressure needs to be measured, the wearable device can obtain the user's blood pressure value based on the physiological signals collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0037] Optionally, the heart rate sensor can be any one of a photoplethysmography (PPG) sensor, a laser sensor, an ultrasonic sensor, and a magnetic induction sensor. The embodiment of the present application is described by taking the heart rate sensor being a PPG sensor and the heart rate data being a PPG signal as an example.

[0038] Optionally, the electrocardiogram sensor may be an ECG sensor.

[0039] The amplitude of the first physiological signal is greater than a preset amplitude, the amplitude of the first physiological signal is stable, and the amplitude of the second physiological signal is also stable. The first pressure value is collected by the pressure sensor when the amplitude of the first physiological signal is greater than a preset amplitude, the amplitude of the first physiological signal is stable, and the amplitude of the second physiological signal is also stable.

[0040] In this way, after the quality of the first physiological signal, the first pressure value, and the second physiological signal all meet the requirements, the wearable device can detect blood pressure through the first physiological signal, the first pressure value, and the second physiological signal. On the one hand, compared with the method of measuring blood pressure with an airbag, the comfort of measuring blood pressure based on the first physiological signal, the second pressure value, and the second physiological signal in this application is higher. On the other hand, the quality of the first physiological signal, the second pressure value, and the second physiological signal all meet the requirements, which improves the accuracy of the wearable device in measuring blood pressure based on the first physiological signal, the second pressure value, and the second physiological signal.

[0041] In combination with the second aspect, in one possible implementation method, obtaining the first pressure value of the heart rate sensor through the pressure sensor specifically includes: determining whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude; if it is greater than the preset amplitude, obtaining the first pressure value of the heart rate sensor through the pressure sensor.

[0042] Optionally, before obtaining the first pressure value of the heart rate sensor through the pressure sensor, the wearable device may first obtain the amplitude of the third physiological signal obtained by the heart rate sensor. And based on the amplitude of the third physiological signal, it is confirmed whether the pressing force needs to be adjusted. When the amplitude of the third physiological signal is greater than the preset value, it means that the user's pressing force is appropriate and there is no need to adjust the pressing force. The wearable device can then obtain the first pressure value of the heart rate sensor through the pressure sensor. When the amplitude of the third physiological signal is less than the preset value, it means that the user's pressing force is too large or too small, resulting in the amplitude of the third physiological signal being less than the preset value. The wearable device can obtain the pressure value of the heart rate sensor through the pressure sensor, so as to prompt the user to increase or decrease the pressing force based on the pressure value, until the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset value after the user adjusts the pressing force.

[0043] Optionally, the wearable device may first obtain the pressure value of the heart rate sensor via a pressure sensor. After adjusting the pressure value to within a preset range, the wearable device may then obtain the amplitude of the third physiological signal obtained by the heart rate sensor. When the amplitude of the third physiological signal is greater than the preset value, it indicates that the user's pressing force is appropriate and no adjustment is required. The wearable device may then obtain the first pressure value of the heart rate sensor via the pressure sensor. If the amplitude of the third physiological signal is less than the preset value, the pressing force may need to be adjusted. This is because different users have different degrees of vascular constriction. Even if the pressure value is within the preset range, the amplitude of the physiological signal obtained by the heart rate sensor may still be less than the preset amplitude. Therefore, after adjusting the pressure value of the pressure sensor to within the preset range, the wearable device may also monitor whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude. If it is less than the preset amplitude, the wearable device may again obtain the pressure value of the heart rate sensor via the pressure sensor and, based on this pressure value, prompt the user to increase or decrease the pressing force until the amplitude of the physiological signal obtained by the heart rate sensor exceeds the preset amplitude.

[0044] In combination with the second aspect, in one possible implementation, before obtaining the first pressure value of the heart rate sensor through the pressure sensor, the method also includes: obtaining the second pressure value of the heart rate sensor through the pressure sensor; if the second pressure value is greater than the first threshold, prompting the user to reduce the pressure of the pressing operation; if the second pressure value is less than the second threshold, prompting the user to increase the pressure of the pressing operation.

[0045] The amplitude of the physiological signal collected by the heart rate sensor is related to the size of the pressure value. When the first pressure value is within the preset range, the amplitude of the physiological signal collected by the heart rate sensor is greater than the preset amplitude, and the wearable device has a higher accuracy in measuring blood pressure values ​​based on the physiological signal collected by the heart rate sensor. Based on this, during the blood pressure measurement process, if the first pressure value collected by the pressure sensor is not within the preset range, the wearable device can prompt the user to adjust the pressing force, such as increasing or decreasing the pressing force, so that the first pressure value is within the preset range, in order to obtain a physiological signal with an amplitude greater than the preset value, thereby improving the accuracy of the wearable device in measuring blood pressure values ​​based on the physiological signal collected by the heart rate sensor.

[0046] For example, the pressure sensor can acquire a second pressure value. When the second pressure value is greater than a first threshold, the user is prompted to reduce the pressure of the pressing operation; if the second pressure value is less than the second threshold, the user is prompted to increase the pressure of the pressing operation. By ensuring that the pressure value acquired by the pressure sensor is between the first and second thresholds, the wearable device can acquire a physiological signal with an amplitude greater than a preset amplitude through the heart rate sensor. Physiological signals with an amplitude greater than the preset amplitude have stronger anti-interference capabilities and will not be drowned out by noise, thereby improving the accuracy of blood pressure measurement by the wearable device based on the physiological signal collected by the heart rate sensor.

[0047] In combination with the second aspect, in a possible implementation manner, the method further includes: displaying a pressure indication bar, where the pressure indication bar is used to indicate a pressure value of the heart rate sensor obtained by the pressure sensor.

[0048] Optionally, the wearable device may further display a pressure threshold interval to prompt the user whether the pressure value corresponding to the current pressing force is within the pressure threshold interval.

[0049] In combination with the second aspect, in one possible implementation, before the heart rate sensor obtains the first physiological signal, the method also includes: determining whether the amplitude of the physiological signal obtained by the heart rate sensor is stable; if it is unstable, determining whether the user is in a state of motion based on the sound signal and motion data collected by the microphone; if the user is in a state of motion, prompting the user to remain still.

[0050] When the wearable device includes multiple heart rate sensors, the stable amplitude of the physiological signal acquired by the heart rate sensors may refer to the stable amplitude of the physiological signal acquired by any one of the multiple heart rate sensors, or the stable amplitude of the physiological signal acquired by all the multiple heart rate sensors.

[0051] The motion state may refer to the current state of the user being in motion, or may refer to the state of the user being in motion within a previous period of time.

[0052] Optionally, the wearable device can confirm whether the user is in motion based on motion data collected by the motion sensor.

[0053] Optionally, the wearable device may also detect whether the amplitude of the physiological signal obtained by the heart rate sensor is stable before obtaining the first pressure value.

[0054] In a third aspect, the present application provides a wearable device, which includes a memory and a processor; wherein the memory and the processor are coupled, and the memory is used to store a computer program. When the processor executes and calls the computer program, the wearable device executes a blood pressure measurement method provided in any possible implementation of any of the above aspects.

[0055] In a fourth aspect, the present application provides a computer-readable storage medium comprising instructions. When the instructions are run on a wearable device, the wearable device executes a blood pressure measurement method provided in any possible implementation of any of the above aspects.

[0056] In a fifth aspect, the present application provides a chip system, which includes one or more processors, and the processor is used to call computer instructions to enable a wearable device to execute a blood pressure measurement method provided in any possible implementation of any of the above aspects.

[0057] In a sixth aspect, the present application provides a computer program product comprising instructions. When the computer program product is run on a wearable device, the wearable device executes a blood pressure measurement method provided in any possible implementation of any of the above aspects.

[0058] For the description of the beneficial effects of the third to sixth aspects, reference may be made to the description of the beneficial effects in the first or second aspect, and this application will not repeat them here. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 1 shows a schematic structural diagram of a wearable device 100;

[0060] Figure 2 A schematic diagram showing a wearing surface of the wearable device 100 is shown;

[0061] Figure 3 1 shows a schematic diagram of the hardware structure of the wearable device 100;

[0062] Figures 4A-4D shows a schematic diagram of starting the blood pressure measurement mode;

[0063] Figure 5A-5G Schematic diagram showing the wearable device 100 verifying the user's identity;

[0064] Figure 5H FIG2 is a schematic diagram showing the wearable device 100 receiving a user operation to start blood pressure measurement;

[0065] Figure 6A and Figure 6B A schematic diagram showing the effect of pressure on PPG and ECG signals;

[0066] Figure 7 A schematic flow chart of a method for the wearable device 100 to monitor and adjust pressure is shown;

[0067] Figures 8A-8C A schematic diagram showing a wearable device 100 prompting a user to adjust pressing force;

[0068] Figure 9 A schematic flow chart of a method for the wearable device 100 to monitor the amplitude of a PPG signal and adjust the pressure is shown;

[0069] Figures 10A-10B Another schematic diagram showing a wearable device 100 prompting a user to adjust pressing force;

[0070] Figures 11A-11B FIG. 1 shows a schematic diagram of the wearable device 100 prompting the user to remain still;

[0071] Figure 12AA schematic diagram showing the wearable device 100 prompting the user to wear the wearable device 100 appropriately is shown;

[0072] Figure 12B A schematic diagram showing the wearable device 100 prompting the user to maintain good contact with the first button is shown;

[0073] Figure 13 A flow chart of a blood pressure measurement method provided in this application;

[0074] Figure 14 A flow chart of another blood pressure measurement method provided in this application. DETAILED DESCRIPTION

[0075] The following is a clear and detailed description of the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship between related objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0076] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more.

[0077] The term "user interface (UI)" in the following embodiments of this application refers to the media interface for interaction and information exchange between an application or operating system and a user, which realizes the conversion between the internal form of information and the form acceptable to the user. The commonly used form of user interface is the graphical user interface (GUI), which refers to a user interface related to computer operations displayed in a graphical manner. It can be a visual interface element such as text, icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, etc. displayed on the display screen of a wearable device.

[0078] To conveniently monitor blood pressure, wearable devices can measure blood pressure using an airbag. For example, the airbag within a wearable device can be inflated linearly, blocking arterial blood flow with air pressure. Oscillation waves of varying pressures are generated, allowing systolic and diastolic blood pressure to be determined. However, the inflation and deflation process can compress the user's blood vessels, resulting in a poor user experience.

[0079] In order to improve the user experience of measuring blood pressure with a wearable device, the wearable device in this application can obtain sensor data through a preset sensor and estimate the blood pressure value through the sensor data.

[0080] In some embodiments, the sensor may include a heart rate sensor, which is used to collect heart rate data. The wearable device can estimate the blood pressure value based on the heart rate data.

[0081] In some embodiments, the sensor may also include a heart rate sensor and an electrocardiogram sensor. The electrocardiogram sensor is used to collect electrocardiogram data. The wearable device can estimate the blood pressure value based on the heart rate data and the electrocardiogram data.

[0082] In some embodiments, the sensor may further include a heart rate sensor, an electrocardiogram sensor, and a pressure sensor. The pressure sensor is used to collect pressure data. The wearable device may estimate blood pressure values ​​based on the heart rate data, electrocardiogram data, and pressure data.

[0083] The sensors are not limited to the above-mentioned types. The sensors may also include other types of sensors. The wearable device may also estimate the blood pressure value based on other sensor data. This application does not limit this.

[0084] Optionally, the heart rate sensor can be any one of a photoplethysmography (PPG) sensor, a laser sensor, an ultrasonic sensor, and a magnetic induction sensor. The embodiment of the present application is described by taking the heart rate sensor being a PPG sensor and the heart rate data being a PPG signal as an example.

[0085] Optionally, the ECG sensor may be an electrocardiogram (ECG) sensor, and the ECG data may be an ECG signal.

[0086] Figure 1 A structural schematic diagram of a wearable device 100 is shown.

[0087] like Figure 1 As shown, the wearable device 100 includes a watch body and a wearable component 103, wherein the watch body includes a wearable surface ( Figure 1 not shown) and a display surface 104.

[0088] Display surface 104 includes a display screen. The display screen can be used to display content such as the time, battery level, Bluetooth ID, received messages, and user activity data. The display screen can also be used to illuminate the display screen in response to user clicks. The display screen can also record the user's steps and calories burned, and provide basic functions such as incoming call alerts and message notifications.

[0089] The wearable component 103 is used to attach the watch body. For example, the wearable component 103 can be a wristband or watch strap. The wearable component 103 is a device that allows the watch body to be attached to the user's wrist. The wearable device 100 is attached to the user's wrist.

[0090] The side surface of the watch body includes button 101 and button 102.

[0091] In some embodiments, a pressure sensor and a PPG sensor are pre-installed on the button 101. The pressure sensor is used to detect the pressure signal of the finger in contact with the button 101, and the PPG sensor is used to detect the PPG signal of the finger in contact with the button 101. The surface of the button 101 is pre-installed with an electrode, such as a first electrode. When blood pressure needs to be measured, the user can press the button 101 with a single finger, and the wearable device 100 can collect the finger pressure signal through the pressure sensor on the button 101, and collect the finger PPG signal through the PPG sensor on the button 101. When the user presses the button 101 with a single finger, the first electrode on the surface of the button 101 contacts the finger skin, and the electrode on the wearing surface (such as the second electrode) contacts the wrist skin, so that the first electrode and the second electrode form a loop, and the wearable device 100 can collect ECG signals through the first electrode and the second electrode. The wearable device 100 can estimate the user's blood pressure value through the finger pressure signal, the finger PPG signal and the ECG signal.

[0092] The button 102 can be used to control the brightness of the display screen, scroll the pages displayed on the display screen based on user operations, etc.

[0093] Figure 2 FIG. 1 is a schematic diagram showing a wearing surface of the wearable device 100 .

[0094] For example, Figure 2 As shown, the wearing surface 105 of the watch body may include a second electrode, and the second electrode of the wearing surface 105 is used to form a loop with the first electrode on the surface of the button 101 to collect ECG signals.

[0095] In some embodiments, a PPG sensor is pre-installed on the wearing surface 105. The PPG sensor is used to detect the PPG signal of the wrist in contact with the wearing surface 105 and detect whether the wearable device 100 is properly worn based on the wrist PPG signal. In some embodiments, the wearable device 100 can also estimate the user's blood pressure based on the wrist PPG signal.

[0096] In some embodiments, a pressure sensor may also be pre-installed on the wearing surface 105 to detect pressure on the wearing surface. When blood pressure measurement is required, the wearable device 100 may collect wrist PPG signals through the pre-installed PPG sensor on the wearing surface 105, and collect wrist pressure signals through the pre-installed pressure sensor on the wearing surface 105. The wearable device 100 can estimate the user's blood pressure value based on the wrist PPG signals and wrist pressure signals.

[0097] Optional, Figure 1 and Figure 2 Only one form of the wearable device 100 is shown. The wearable device 100 can also be a device of other forms, such as a ring, a bracelet, or the like that does not include a display screen. Devices of other forms can also be provided with sensors on the device body. Devices of other forms can also include one or more of the above-mentioned sensors and measure blood pressure through sensor data collected by the one or more sensors.

[0098] Figure 3 Schematic diagram of the hardware structure of the wearable device 100 is shown.

[0099] The wearable device 100 may be a wristband, a watch, or other device. The present embodiment of the application does not impose any particular restrictions on the specific type of the wearable device. The present embodiment of the application is merely described using the wearable device 100 as a watch as an example.

[0100] like Figure 3 As shown, the wearable device 100 may include: a processor 200A, a wireless communication module 201, a mobile communication module 202, a sensor module 203, a button 204, a display 205, a motor 206, a speaker 207, a microphone 208, an internal memory 209A, a SIM card interface 209B, a USB interface 209C, a power management module 210, a battery 211, and a charging management module 212. The sensor module 203 may include a touch sensor 203A, a motion sensor 203B, a heart rate sensor 203C, a pressure sensor 203D, and an electrocardiogram sensor 203E.

[0101] The processor 200A may include one or more processing units. For example, the processor 200A may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors.

[0102] The wireless communication module 201 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc. applied to wearable devices. The wireless communication module 201 can be one or more devices that integrate at least one communication processing module. The wireless communication module 201 receives electromagnetic waves via an antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 200A. The wireless communication module 201 can also receive the signal to be sent from the processor 200A, frequency modulate it, amplify it, and convert it into electromagnetic waves for radiation through the antenna.

[0103] The mobile communication module 202 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc., applied to wearable devices. The mobile communication module 202 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 202 can receive electromagnetic waves from the antenna, filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. In some embodiments, at least some of the functional modules of the mobile communication module 202 can be set in the processor 200A. In some embodiments, at least some of the functional modules of the mobile communication module 202 can be set in the same device as at least some of the modules of the processor 200A.

[0104] The wireless communication function of the wearable device can be implemented through the mobile communication module 202, the wireless communication module 201, the modem processor and the baseband processor.

[0105] Touch sensor 203A, also known as a "touch panel," can be installed on the display screen of wearable device 100. The touch sensor 203A and the display screen together form a touch screen, also known as a "touch screen." Touch sensor 203A is used to detect touch operations applied to or near it. The touch sensor can transmit the detected touch operations to a processor to determine the type of touch event. Visual output related to the touch operations can be provided via the display screen.

[0106] The motion sensor 203B can obtain motion data and determine the motion state of the user wearing the wearable device based on the motion data. The motion state may include a stationary state and a non-stationary state. The motion sensor may include, but is not limited to, a gyroscope sensor, an acceleration sensor, etc. Among them, the gyroscope sensor can determine the angular velocity of the wearable device 100 around three axes (i.e., the x, y, and z axes). The acceleration sensor can detect the magnitude of the acceleration of the wearable device 100 in various directions (generally three axes). When the wearable device 100 is stationary, the magnitude and direction of gravity can be detected.

[0107] Heart rate sensor 203C is used to collect heart rate data, which can be used to estimate the user's frontal blood pressure. Heart rate sensor 203C can be any of a PPG sensor, a laser sensor, an ultrasonic sensor, and a magnetic induction sensor. Wearable device 100 can have one or more heart rate sensors 203C.

[0108] Pressure sensor 203D is used to sense pressure signals and convert them into electrical signals. There are many types of pressure sensors 203D, including resistive, inductive, and capacitive pressure sensors. A capacitive pressure sensor may include at least two parallel plates made of conductive material. When a force acts on pressure sensor 203D, the capacitance between the electrodes changes, and wearable device 100 determines the intensity of the pressure based on this change in capacitance. Wearable device 100 can have one or more pressure sensors 203D.

[0109] ECG sensor 203E is used to collect ECG information. ECG information can be used together with heart rate data to estimate the user's blood pressure. ECG sensor 203E can be an ECG sensor. The number of ECG sensors 203E on wearable device 100 can be one or more.

[0110] In some embodiments, the ECG sensor 203E may include multiple electrodes, such as a first electrode and a second electrode. The heart rate sensor 203C and pressure sensor 203D may be disposed on the button 101, with the first electrode disposed on the surface of the button 101 and the second electrode disposed on the surface of the wearing surface 105. When a press is performed on the button 101, the first and second electrodes form a circuit, and the wearable device 100 can collect ECG signals via the first and second electrodes, collect finger PPG signals via the heart rate sensor 203C on the button 101, and collect finger pressure signals via the pressure sensor 203D on the button 101. The wearable device 100 can then estimate the user's blood pressure based on the finger pressure signal, finger PPG signal, and ECG signal. Optionally, the wearable device 100 can also detect the intensity of the user's press on the button 101 and guide the user to adjust the pressure, so that the wearable device 100 can collect higher-quality PPG data, thereby improving the accuracy of the estimated blood pressure value.

[0111] Optionally, the wearable device 100 may not include the electrocardiogram sensor 203E, and estimate the user's blood pressure value based on the finger pressure signal and the finger PPG signal.

[0112] Optionally, the wearable device 100 may not include the electrocardiogram sensor 203E and the pressure sensor 203D, and estimate the user's blood pressure value based on the finger PPG signal.

[0113] In some embodiments, the ECG sensor 203E may include multiple electrodes, such as a first electrode and a second electrode. The heart rate sensor 203C and the pressure sensor 203D may be disposed on the wearing surface 105. The first electrode may be disposed on the surface of the button 101, or the first electrode may be disposed elsewhere on the watch body, such as on the side surface of the wearable device 100 or on the surface of the display surface 104. When a press operation is performed on the button 101 or other locations on the watch body, the first electrode and the second electrode form a circuit, and the wearable device 100 can collect ECG signals through the first and second electrodes, collect wrist PPG signals through the heart rate sensor 203C on the wearing surface 105, and collect wrist pressure signals through the pressure sensor 203D on the wearing surface 105. The wearable device 100 can then estimate the user's blood pressure using the wrist pressure signal, wrist PPG signal, and ECG signal. Optionally, the wearable device 100 can also detect the size of the wrist pressure signal and guide the user to adjust the tightness of the wearable component 103 so that the wearable device 100 can collect PPG data of better quality to improve the accuracy of the estimated blood pressure value.

[0114] Optionally, the wearable device 100 may not include the electrocardiogram sensor 203E, and estimate the user's blood pressure value based on the wrist pressure signal and the wrist PPG signal.

[0115] Optionally, the wearable device 100 may not include the electrocardiogram sensor 203E and the pressure sensor 203D, and estimate the user's blood pressure based on the wrist PPG signal.

[0116] The button 204 includes a power button, etc. The button 204 can be a mechanical button. It can also be a touch button. The wearable device can receive the button input and generate a key signal input related to the user settings and function control of the wearable device. Optionally, the button 204 can include Figure 1 The buttons 101 and 102 are shown. Optionally, the button 204 may also include only Figure 1 The button 101 or button 102 is shown.

[0117] The display screen 205 is used to display images, videos, etc. The display screen 205 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 (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), etc. In some embodiments, the wearable device may include one or N display screens 205, where N is a positive integer greater than 1.

[0118] Motor 206 can generate vibration alerts. Motor 206 can be used for incoming call vibration alerts or for touch vibration feedback. For example, touch operations on different applications (such as taking photos, playing audio, etc.) can correspond to different vibration feedback effects. Motor 206 can also correspond to different vibration feedback effects for touch operations on different areas of display screen 205.

[0119] The speaker 207, also called a "speaker", is used to convert the audio electrical signal into a sound signal. The wearable device can listen to music or listen to hands-free calls through the speaker 207.

[0120] Microphone 208 , also known as a "microphone" or "speaker," converts sound signals into electrical signals. When making a call or sending a voice message, a user can place their mouth close to microphone 208 to input the sound signal into microphone 208 . A wearable device may include at least one microphone 208 .

[0121] The internal memory 209A can be used to store computer executable program codes, which include instructions. The processor 200A executes various functional applications and data processing of the wearable device by running the instructions stored in the internal memory 209A. V may include a program storage area and a data storage area. Among them, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area can store data (such as audio data) created during the use of the internal memory 209A, etc. In addition, the internal memory 209A may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0122] The SIM card interface 209B is used to connect a SIM card. The SIM card can be connected to or removed from the wearable device by inserting it into or removing it from the SIM card interface 209B. The wearable device can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 209B can support NanoSIM cards, MicroSIM cards, SIM cards, etc. Multiple cards can be inserted into the same SIM card interface 209B at the same time. The types of the multiple cards can be the same or different. The SIM card interface 209B can also be compatible with different types of SIM cards. The SIM card interface 209B can also be compatible with external memory cards. The wearable device interacts with the network through the SIM card to implement functions such as calls and data communications. In some embodiments, the wearable device uses an eSIM, i.e., an embedded SIM card. The eSIM card can be embedded in the wearable device and cannot be separated from the wearable device. In some embodiments, the wearable device may also not include a SIM card interface 209B.

[0123] USB port 209C is an interface that complies with USB standards and specifications, and may be a MiniUSB port, MicroUSB port, USB Type-C port, or the like. USB port 209C can be used to connect a charger to charge a wearable device, or to transfer data between USB port 209C and peripheral devices. It can also be used to connect headphones to play audio. This port can also be used to connect other electronic devices, such as augmented reality devices.

[0124] The power management module 210 is used to connect the battery 211, the charging management module 212, and the processor 200A. The power management module 210 receives input from the battery 211 and / or the charging management module 212 and provides power to the processor 200A, the internal memory 209A, the display 205, and the wireless communication module 201. The power management module 210 can also be used to monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage, impedance). In some other embodiments, the power management module 210 can also be provided in the processor 200A. In other embodiments, the power management module 210 and the charging management module 212 can also be provided in the same device.

[0125] The charging management module 212 is configured to receive charging input from a charger. The charger can be either a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 212 can receive charging input from the wired charger via the USB interface 209C. In some wireless charging embodiments, the charging management module 212 can receive wireless charging input via the wearable device's wireless charging coil. While charging the battery 211, the charging management module 212 can also power the wearable device via the power management module 210.

[0126] It is understood that the structures illustrated in the embodiments of the present invention do not constitute specific limitations on wearable devices. In other embodiments of the present application, the wearable device may include more or fewer components than shown, or combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0127] Next, several methods of enabling blood pressure measurement on the wearable device 100 are introduced.

[0128] Method 1: The wearable device 100 starts measuring blood pressure at a fixed time.

[0129] The wearable device 100 may start measuring the user's blood pressure at a fixed time.

[0130] The fixed time can be set in advance by the user. For example, the user can operate on the wearable device 100 or other devices to set the start time of blood pressure measurement to start measuring blood pressure at a fixed time to monitor whether the user's blood pressure is abnormal.

[0131] In some embodiments, after a fixed time has elapsed, and before blood pressure measurement begins, the wearable device 100 can determine the user's state based on motion data, and begin blood pressure measurement when the user is at rest, to ensure the accuracy of the blood pressure measurement results. If the user is in motion, the wearable device 100 can postpone blood pressure measurement until it detects that the user is at rest, and then begin blood pressure measurement.

[0132] In other possible implementations, the wearable device 100 may also determine multiple different blood pressure measurement times within a day (24 hours) based on the user information, and automatically start measuring blood pressure at the multiple different times to obtain multiple blood pressure values, thereby monitoring the user's blood pressure throughout the day. The wearable device 100 may also determine the daily change pattern of the user's blood pressure based on the multiple blood pressure values. The user information may include, but is not limited to, one or more of the following: blood pressure, heart rate, body temperature, pulse, respiratory rate, blood sugar, smoking history, drinking history, medical history, medication history, lifestyle habits, gender, age, height, weight, etc.

[0133] Method 2: The wearable device 100 detects a specific event and starts measuring blood pressure.

[0134] In some embodiments, the specific event can be an abnormal event. For example, when the user's physiological data, such as heart rate, blood oxygen, body temperature, pulse, respiratory rate, blood sugar, etc., is significantly different from historical data, the wearable device 100 can start measuring blood pressure to detect the user's health status. The specific event is not limited to abnormal events and can also be other events, which is not limited in this application.

[0135] Method 3: The wearable device 100 receives a user operation to start measuring blood pressure.

[0136] In some embodiments, the user can also actively trigger the wearable device 100 to start measuring blood pressure.

[0137] For example, Figure 4A As shown, the wearable device 100 can receive user operation display Figure 4A The user interface shown in FIG. 1 includes an enable option, through which the user can control the wearable device 100 to measure blood pressure. For example, Figure 4A As shown, the wearable device 100 can receive a user input operation (eg, a single click) for turning on an option, and in response to the user's input operation, the wearable device 100 can start measuring blood pressure.

[0138] Method 4: The wearable device 100 receives a blood pressure measurement start instruction sent by the electronic device and starts measuring blood pressure.

[0139] In some embodiments, the wearable device 100 can establish a communication connection with an electronic device (such as a mobile phone, tablet computer, etc.). When a user operation for starting blood pressure measurement is detected, the electronic device can send a command to start blood pressure measurement to the wearable device 100. Upon receiving the command to start blood pressure measurement, the wearable device 100 starts measuring blood pressure.

[0140] like Figure 4B As shown, the electronic device displays the home screen interface 200. The home screen interface 200 may include an icon for the application Sports Health, as well as icons for other applications (such as email, gallery, and music, etc.). The icon of any application can be used to respond to user operations, such as touch operations, so that the electronic device starts the application corresponding to the icon. Among them, the icon for Sports Health can be used to start the application Sports Health. The application Sports Health can be used for the electronic device to establish a communication connection relationship with the wearable device 100. The electronic device can display the user's exercise data to the user through the application Sports Health. The embodiment of the present application does not limit the application used to connect the electronic device and the wearable device 100. In addition to Sports Health, it can also be other applications.

[0141] like Figure 4B As shown, in response to a user operation on the sports health icon, such as a touch operation, the electronic device can display Figure 4C The sports health application interface shown. Figure 4C The application interface shown may include an added device option, which includes one or more devices that have established a communication connection with the electronic device, such as the wearable device 100. The user can view relevant information of the wearable device 100 through the added device option.

[0142] like Figure 4C As shown, when a viewing operation is detected on the wearable device 100 in the added device option, the electronic device can display Figure 4D The application interface shown. Figure 4D The application interface shown may include device status, blood pressure data, and blood pressure measurement mode. The device status can be used to prompt the connection status between the wearable device 100 and the electronic device and the battery level of the wearable device 100. For example, when it is monitored that the electronic device has established a communication connection relationship with the wearable device 100 via a Bluetooth connection, the device status may prompt that the connection mode is Bluetooth connection and the connection status is "connected". Furthermore, the electronic device can obtain the battery information of the wearable device 100. The device status can prompt the current battery level of the wearable device 100, for example, 77%. The content of the device status prompt can also include more, which is not limited to this embodiment of the present application.

[0143] Blood pressure data recorded by the wearable device 100 over the past 24 hours may include a blood pressure trend chart, daytime average blood pressure, nighttime average blood pressure, blood pressure variation patterns, and current blood pressure. During daytime, the average systolic pressure is 130 mmHg, and the average diastolic pressure is 75 mmHg. During nighttime, the average systolic pressure is 110 mmHg, and the average diastolic pressure is 65 mmHg. The blood pressure variation pattern is a dipper-shaped rhythm. Currently, the systolic pressure is 119 mmHg, and the diastolic pressure is 86 mmHg.

[0144] Figure 4D The application interface shown may also include a blood pressure measurement mode option. Currently, the blood pressure measurement mode is off, that is, the wearable device 100 has not started measuring blood pressure. The user can turn on the blood pressure measurement mode through the blood pressure measurement mode option to enable the wearable device 100 to start measuring blood pressure.

[0145] For example, Figure 4D As shown, the electronic device can receive a user input operation (such as a single click) for the blood pressure measurement mode option. In response to the user's input operation, the electronic device can send a start blood pressure measurement instruction to the wearable device 100. After receiving the start blood pressure measurement instruction sent by the electronic device, the wearable device 100 turns on the blood pressure measurement mode and starts measuring the user's blood pressure.

[0146] Optionally, when the blood pressure measurement mode is turned on, the wearable device 100 can automatically turn on the do not disturb mode. For example, when the do not disturb mode is turned on, when the electronic device receives an incoming call or message notification, the wearable device 100 can block the reminder instruction of the incoming call or message notification sent by the electronic device. That is, the wearable device 100 will not remind the user of the incoming call or message notification by vibration or ringing. In this way, when the wearable device 100 has turned on the blood pressure measurement mode and there is an incoming call or message notification, the wearable device 100 will not interfere with the user's blood pressure measurement. The wearable device 100 can display the incoming call or message notification after the blood pressure measurement is completed.

[0147] The wearable device 100 is not limited to the above-mentioned methods of starting blood pressure measurement. It can also start measuring blood pressure based on other methods, and this application does not limit this.

[0148] In some embodiments, before starting to measure blood pressure, the wearable device 100 may prompt the user to verify their identity to determine whether the user wearing the wearable device 100 is the wearable user. This allows the wearable device 100 to store blood pressure measurements of different users separately, allowing analysis of blood pressure trends across different users over time.

[0149] Optionally, the wearable device 100 can verify the user identity after powering on, or before starting to measure blood pressure, or when detecting that the wearable device 100 is switched from a non-wearing state to a wearing state.

[0150] Optionally, the wearable device 100 may also verify the user's identity after starting to measure blood pressure and obtaining the blood pressure value to determine whether the user wearing the wearable device 100 is the local user.

[0151] The wearable device 100 may also verify the user's identity at other times, which is not limited in this application.

[0152] Figures 5A-5E FIG. 1 shows a schematic diagram of the wearable device 100 verifying the identity of a user.

[0153] For example, the wearable device 100 may display Figure 5A The user interface shown, Figure 5A The user interface shown includes a prompt message "Please select whether to wear this device for this user." This prompt message is used to prompt the user to confirm the identity of the user wearing the wearable device 100. The local user can refer to the user information recorded in the wearable device 100. The user information includes but is not limited to: facial image, voiceprint, fingerprint, account information, etc. Figure 5A The user interface shown also includes a "Yes" option and a "No" option, wherein the "Yes" option is used to confirm that the wearable device 100 is currently worn by the local user. The "No" option is used to confirm that the wearable device 100 is not currently worn by the local user.

[0154] In one possible implementation, the wearable device 100 may receive a user's Figure 5A In the user interface shown, the wearable device 100 may display an input operation (eg, click) of the "Yes" option. Figure 5B The user interface shown, Figure 5B The user interface shown includes a prompt message "Please verify user identity", which is used to prompt the user to verify whether the current user is a local user to avoid erroneous operations.

[0155] The authentication methods include, but are not limited to, face recognition, fingerprint recognition, voiceprint recognition, etc. Authentication can also be done in other ways, which are not limited in this application.

[0156] When the identity verification is passed, that is, when it is determined that the user wearing the wearable device 100 is the local user, the wearable device 100 can display Figure 5C The user interface shown, Figure 5CThe user interface shown includes a prompt message "Authentication passed, please start measuring blood pressure!", which is used to indicate that the user wearing the wearable device 100 is a local user.

[0157] In other possible implementations, such as Figure 5D As shown, the wearable device 100 may receive a user input operation (eg, click) for the "No" option. In response to the user's input operation, the wearable device 100 may display Figure 5E The user interface 5100 shown includes a selection bar 5101, which is used for the user to select a user name.

[0158] like Figure 5E As shown, the wearable device 100 can receive a user input operation (such as a single click) for an option 5102 in the selection bar 5101. In response to the user's input operation, the wearable device 100 can display Figure 5F Selection bar 5101 is shown. Selection bar 5104 shows multiple test subject options. For example, multiple test subjects include, but are not limited to, test subject "Lisa (user name)" and test subject "Lucy (user name)". The user can select any test subject to start blood pressure measurement, and the test data will be bound and stored with the currently selected test subject, so that blood pressure measurement results for different users can be stored separately.

[0159] Optionally, if the selection bar 5104 does not include an option for the user that currently needs to be detected, the wearable device 100 can receive the user's input operation for the newly added detection object option in the selection bar 5104 and add an option for the user that currently needs to be detected.

[0160] For example, Figure 5F As shown, the wearable device 100 can receive the user's input operation (such as a single click) for the detection object "Lucy" option in the selection bar 5104. In response to the user's input operation, the wearable device 100 can confirm that the current detection object is "Lucy", and the wearable device 100 can display the following in the selection bar 5101: Figure 5G The "Lucy" logo shown.

[0161] Afterwards, the wearable device 100 may receive an input operation (eg, a single click) from the user for the start measurement option 5103 , and in response to the user's input operation, the wearable device 100 may start measuring blood pressure.

[0162] In some embodiments, before starting to measure blood pressure, the wearable device 100 can prompt a blood pressure measurement posture to complete the blood pressure measurement process.

[0163] For example, Figure 5HAs shown, the wearable device 100 may display a prompt message 5110, which includes "Blood pressure measurement time has arrived, please press the side button with one finger." The prompt message 5110 also includes a countdown option 5111, in which the number "5" is displayed. The countdown option 5111 reminds the user that the wearable device 100 will measure the user's blood pressure in 5 seconds and prompts the user to maintain the correct blood pressure measurement posture to complete the blood pressure measurement process.

[0164] Based on the above introduction, the wearable device 100 can estimate the user's blood pressure value through sensor data collected by preset sensors. In order to improve the accuracy of the estimated blood pressure value, it is necessary to ensure the reliability and accuracy of the sensor data collected by the wearable device 100.

[0165] Figure 6A and Figure 6B Schematic diagram showing the effect of pressure on PPG and ECG signals.

[0166] Figure 6A (a) shows the pressure signal waveform. Figure 6A (b) shows the waveform of ECG signal at different pressures. Figure 6A (c) in FIG. 5 shows the waveform of the PPG signal under different pressures.

[0167] from Figure 6A (a) and Figure 6A As can be seen from (b), as the pressure gradually increases from a small value, the amplitude of the ECG signal does not fluctuate significantly, indicating that the pressure has little effect on the ECG signal.

[0168] from Figure 6A (a) and Figure 6A As can be seen from (c), as the pressure gradually increases from a small value, the amplitude of the PPG signal first increases and then decreases, indicating that pressure has a significant impact on the PPG signal.

[0169] Figure 6B Schematic diagrams showing the waveforms of ECG signals and PPG signals at different pressures.

[0170] like Figure 6B As shown in FIG. 1 , when the pressures are 30 mmHg, 54 mmHg, and 80 mmHg, respectively, the waveform of the ECG signal does not change significantly, and the waveform of the ECG signal is basically the same.

[0171] When the pressure is 30mmHg, 54mmHg and 80mmHg respectively, the waveform of the PPG signal is different. Figure 6BAs shown in Figure 1, when the pressure is 30 mmHg, the PPG signal waveform is waveform A, which includes characteristic point a. Characteristic point a indicates the location of maximum central arterial pressure, and the maximum central arterial pressure is H1. When the pressure is 54 mmHg, the PPG signal waveform is waveform B, which includes characteristic point b. Characteristic point b also indicates the location of maximum central arterial pressure, and the maximum central arterial pressure is H2. When the pressure is 80 mmHg, the PPG signal waveform is waveform C, which includes characteristic point c. Characteristic point c also indicates the location of maximum central arterial pressure, and the maximum central arterial pressure is H3.

[0172] In some embodiments, the maximum central arterial pressure may also be referred to as the amplitude of the PPG signal.

[0173] Here, H1 is smaller than H2, and H2 is smaller than H3. This means that as pressure changes, the maximum central arterial pressure in the PPG signal also changes. Alternatively, as pressure changes, the amplitude of the PPG signal also changes.

[0174] Figure 6B It only shows that as the pressure increases from a small value, the amplitude of the PPG signal gradually increases. Figure 6A It can be seen that as the pressure continues to increase, the amplitude of the PPG signal gradually decreases.

[0175] from Figure 6A and Figure 6B Analysis shows that pressure affects the amplitude of the PPG signal. As pressure increases from a small value, the amplitude of the PPG signal first increases and then decreases. Pressure has almost no effect on the amplitude of the PPG signal. Therefore, based on the pressure value obtained by the pressure sensor, the wearable device 100 can prompt the user to adjust the pressure, thereby changing the amplitude of the PPG signal until the amplitude of the PPG signal exceeds the preset amplitude.

[0176] In order to improve the accuracy of the wearable device 100 in estimating the user's blood pressure value, it is necessary to monitor the quality of the PPG signal and the quality of the ECG signal, and improve the quality of the PPG signal and the quality of the ECG signal collected by the wearable device 100.

[0177] 1. The wearable device 100 monitors the quality of the PPG signal.

[0178] The quality of the PPG signal can be related to the amplitude and stability of the PPG signal. When the amplitude of the PPG signal is greater than a preset amplitude and the PPG signal is stable, the PPG signal has a strong ability to resist noise interference, and the blood pressure value estimated by the wearable device 100 based on multiple parameters such as the PPG signal is closer to the user's actual blood pressure value.

[0179] First, it is described how the wearable device 100 monitors the amplitude of the PPG signal.

[0180] 1. The wearable device 100 monitors the amplitude of the PPG signal.

[0181] based on Figure 6A-6B As described in the embodiments, the amplitude of the PPG signal is related to the pressure. As the pressure gradually increases, the amplitude of the PPG signal first increases and then decreases. Therefore, within a preset pressure range, the amplitude of the PPG signal is greater than the preset amplitude. The preset pressure range can refer to pressure values ​​between a first threshold and a second threshold, where the second threshold is greater than the first threshold.

[0182] In some embodiments, the wearable device 100 can monitor the pressure value and adjust the pressure value to a preset pressure range to obtain a PPG signal with a higher amplitude.

[0183] Figure 7 A flow chart of a method for the wearable device 100 to monitor and adjust pressure is shown.

[0184] S701: The wearable device 100 receives an operation of a user pressing a first button.

[0185] In some embodiments, a button 101 is provided on the side of the wearable device 100. The button 101 may also be referred to as a first button. When a user presses the button 101 with a single finger, the wearable device 100 can detect the finger pressure through a pressure sensor pre-installed on the button 101 and collect the finger PPG signal through a PPG sensor on the button 101.

[0186] S702: The wearable device 100 obtains a first pressure value collected by a pressure sensor in a first button.

[0187] When the user presses the first button with a single finger, the wearable device 100 can obtain a first pressure value collected by the pressure sensor in the first button.

[0188] S703: The wearable device 100 needs to determine whether the first pressure value is between the first threshold and the second threshold.

[0189] After obtaining the first pressure value collected by the pressure sensor, the wearable device 100 needs to determine whether the pressure value is within a preset pressure range. The preset pressure range can be a pressure value between a first threshold and a second threshold, and the second threshold is greater than the first threshold.

[0190] When the first pressure value is between the first threshold and the second threshold, it indicates that the pressing force of the user is appropriate and there is no need to adjust the pressing force, and S707 is executed.

[0191] When the first pressure value is not between the first threshold and the second threshold, it indicates that the user's pressing force is too large or too small, and the pressing force needs to be adjusted so that the pressing force is within the first threshold and the second threshold, and S704 or S705 is executed.

[0192] S704: When the pressure value is greater than the second threshold, the wearable device 100 prompts the user to reduce the pressing force.

[0193] S705: When the pressure value is less than the first threshold, the wearable device 100 prompts the user to increase the pressing force.

[0194] When it is determined that the first pressure value is not between the first threshold and the second threshold, the wearable device 100 needs to further determine whether the first pressure value is greater than the second threshold or less than the first threshold.

[0195] When the first pressure value is greater than the second threshold, it indicates that the pressing force is too great, and the wearable device 100 may prompt the user to reduce the pressing force.

[0196] For example, Figure 8A As shown, when the first pressure value is greater than the second threshold, the wearable device 100 can display Figure 8A The user interface shown, Figure 8A The user interface shown includes a prompt message “Please reduce the pressing force”, which is used to indicate to the user that the pressing force is too great and the user should reduce the pressing force.

[0197] Figure 8A The user interface shown further includes a pressure indicator bar 801 , which is used to indicate a first pressure value. For example, the first pressure value may be 50 mmHg.

[0198] Figure 8A The user interface shown may further include a preset pressure interval 802. Optionally, the preset pressure interval 802 may include a first threshold and a second threshold, for example, the first threshold is 60 mmHg and the second threshold is 140 mmHg.

[0199] When the first pressure value is less than the first threshold, it indicates that the pressing force is too small, and the wearable device 100 can prompt the user to increase the pressing force.

[0200] For example, Figure 8B As shown, when the first pressure value is less than the first threshold, the wearable device 100 can display Figure 8B The user interface shown, Figure 8B The user interface shown includes a prompt message “Please increase pressing force”, which is used to indicate to the user that the pressing force is too small and the user should increase the pressing force.

[0201] Figure 8BThe user interface shown also includes a pressure indicator bar 801 , which is used to indicate a first pressure value. For example, the first pressure value may be 150 mmHg.

[0202] Figure 8B The illustrated user interface may also include preset pressure intervals 802 .

[0203] S706: The wearable device 100 continues to obtain a second pressure value collected by the pressure sensor in the first button.

[0204] After the wearable device 100 prompts the user to increase or decrease the pressing force, the user can adjust the pressing force accordingly. The wearable device 100 can continue to obtain the second pressure value collected by the pressure sensor in the first button.

[0205] After acquiring the second pressure value, the wearable device 100 needs to continue monitoring whether the second pressure value is between the first threshold and the second threshold, that is, execute S702 until the second pressure value acquired by the pressure sensor of the first button is greater than the first threshold and less than the second threshold.

[0206] Optionally, when the second pressure value is greater than the first threshold value and less than the first threshold value, the wearable device 100 can prompt the user that the pressing force is appropriate and maintain the current pressing force.

[0207] For example, Figure 8C As shown, when the second pressure value is greater than the first threshold value and less than the first threshold value, the wearable device 100 can display Figure 8C The user interface shown, Figure 8C The user interface shown includes a prompt message “Measuring, please keep pressing your finger”, which is used to instruct the user that the pressing force is appropriate and to maintain the current pressing force.

[0208] Figure 8C The user interface shown also includes a pressure indicator bar 801 , which is used to indicate a second pressure value. For example, the second pressure value may be 90 mmHg.

[0209] Figure 8C The illustrated user interface may also include preset pressure intervals 802 .

[0210] S707: The wearable device 100 obtains a blood pressure value based on parameters such as the first pressure value or the second pressure value.

[0211] When the first pressure value is greater than the first threshold and less than the second threshold, or when the second pressure value is greater than the first threshold and less than the second threshold, the wearable device 100 can estimate the user's blood pressure based on parameters such as the first pressure value or the second pressure value. The user's blood pressure includes, but is not limited to, systolic pressure, diastolic pressure, and mean pressure.

[0212] In some embodiments, the wearable device 100 may also directly monitor the amplitude of the PPG signal and instruct the user to increase or decrease the pressing force based on the amplitude of the PPG signal so that the PPG signal amplitude is greater than a preset value.

[0213] Figure 9 A flow chart of a method in which the wearable device 100 monitors the amplitude of a PPG signal and adjusts the pressure is shown.

[0214] S901: The wearable device 100 receives an operation of a user pressing a first button.

[0215] In some embodiments, a button 101 is provided on the side of the wearable device 100. The button 101 may also be referred to as a first button. When a user presses the button 101 with a single finger, the wearable device 100 may collect a finger pressure signal through a pressure sensor pre-installed on the button 101 and a finger PPG signal through a PPG sensor on the button 101.

[0216] S902: The wearable device 100 obtains a first PPG signal collected by a PPG sensor in a first button.

[0217] When the user presses the first button with a single finger, the wearable device 100 can obtain a first PPG signal collected by the PPG sensor in the first button.

[0218] S903: The wearable device 100 needs to determine whether the amplitude of the first PPG signal is greater than a preset amplitude.

[0219] After acquiring the first PPG signal collected by the PPG sensor, the wearable device 100 needs to determine whether the amplitude of the first PPG signal is greater than a preset amplitude.

[0220] When the amplitude of the first PPG signal is greater than the preset amplitude, it indicates that the quality of the PPG signal is good and there is no need to adjust the amplitude of the PPG signal, and S911 is executed.

[0221] When the amplitude of the first PPG signal is less than the preset amplitude, it indicates that the quality of the PPG signal is poor and the pressing force needs to be adjusted so that the amplitude of the PPG signal is greater than the preset amplitude, and S904 is executed.

[0222] S904: The wearable device 100 obtains a first pressure value collected by a pressure sensor in the first button.

[0223] When the amplitude of the first PPG signal is determined to be less than the preset amplitude, the wearable device 100 obtains a first pressure value detected by the pressure sensor in the first button and adjusts the user's pressing force on the button 101 based on the first pressure value to increase the amplitude of the PPG signal and obtain a higher-quality PPG signal.

[0224] S905: The wearable device 100 determines whether the first pressure value is less than a third threshold or greater than a fourth threshold.

[0225] When the first pressure value is less than the third threshold or greater than the fourth threshold, S906 or S907 is executed.

[0226] When the first pressure value is greater than the third threshold value and less than the fourth threshold value, S911 is executed.

[0227] S906: When the first pressure value is less than the third threshold, the wearable device 100 prompts the user to increase the pressing force.

[0228] S907: When the first pressure value is greater than the fourth threshold, the wearable device 100 prompts the user to reduce the pressing force.

[0229] In some embodiments, the third threshold is smaller than the fourth threshold, the third threshold may be the same as the first threshold, and the fourth threshold may be the same as the second threshold.

[0230] In some embodiments, the third threshold is smaller than the fourth threshold, the third threshold is larger than the first threshold, and the fourth threshold is smaller than the second threshold.

[0231] After determining that the amplitude of the first PPG signal is less than the preset amplitude and obtaining the first pressure value collected by the pressure sensor, the wearable device 100 can prompt the user to increase or decrease the pressing force based on the magnitude of the first pressure value.

[0232] When the first pressure value is less than the third threshold, it indicates that the pressing force is too small, causing the amplitude of the PPG signal to be less than the preset amplitude. The wearable device 100 can prompt the user to increase the pressing force.

[0233] For example, Figure 10A As shown, when the first pressure value is less than the third threshold, the wearable device 100 may display Figure 10A The user interface shown, Figure 10A The user interface shown includes a prompt message "The current PPG signal is weak, please increase the pressure of your finger". The prompt message is used to indicate that the user's pressing force is too small and please increase the pressing force.

[0234] Figure 10A The user interface shown further includes a pressure indicator bar 1001 , which is used to indicate a first pressure value. For example, the first pressure value may be 70 mmHg.

[0235] Figure 10A The user interface shown may also include a preset pressure interval 1002, which may be Figure 10AThe second block shown indicates the pressure interval. Optionally, the preset pressure interval 1002 may include a third threshold and a fourth threshold, for example, the third threshold is 80 mmHg and the fourth threshold is 130 mmHg. Exemplarily, Figure 10A The pressure value indicated by the left edge of the second block shown may be a third threshold value, Figure 10A The pressure value indicated by the right edge of the second block shown may be a fourth threshold value.

[0236] When the first pressure value is greater than the fourth threshold, it indicates that the pressing force is too great, causing the amplitude of the PPG signal to be less than the preset amplitude. The wearable device 100 may prompt the user to reduce the pressing force.

[0237] For example, Figure 10B As shown, when the first pressure value is greater than the fourth threshold, the wearable device 100 may display Figure 10B The user interface shown, Figure 10B The user interface shown includes a prompt message "The current PPG signal is weak, please reduce the pressure of your finger". The prompt message is used to indicate that the user's pressing force is too great and please reduce the pressing force.

[0238] Figure 10B The user interface shown also includes a pressure indicator bar 1001 , which is used to indicate a first pressure value. For example, the first pressure value may be 140 mmHg.

[0239] Figure 10B The illustrated user interface may also include preset pressure intervals 1002 .

[0240] S908: The wearable device 100 continues to obtain a second pressure value collected by the pressure sensor in the first button.

[0241] After the wearable device 100 prompts the user to increase or decrease the pressing force, the user can adjust the pressing force accordingly. The wearable device 100 can continue to obtain the second pressure value collected by the pressure sensor in the first button.

[0242] S909: The wearable device 100 needs to determine whether the second pressure value is different from the first pressure value.

[0243] After obtaining the second pressure value collected by the pressure sensor, the wearable device 100 needs to determine whether the second pressure value is different from the first pressure value to determine whether the user has adjusted the pressing force.

[0244] When the second pressure value is different from the first pressure value, it indicates that the user has adjusted the pressing force, and S910 is executed.

[0245] When the second pressure value is the same as the first pressure value, it indicates that the user has not adjusted the pressing force, and S906 or S907 is continued to be executed until the second pressure value is different from the first pressure value.

[0246] S910: The wearable device 100 obtains a second PPG signal collected by a PPG sensor in the first button.

[0247] After the user adjusts the pressing force, the wearable device 100 can obtain the second PPG signal collected by the PPG sensor in the first button, and determine whether the amplitude of the second PPG signal is greater than the preset amplitude, that is, continue to execute S903.

[0248] S911. The wearable device 100 obtains a blood pressure value based on parameters such as the first PPG signal or the second PPG signal.

[0249] When the amplitude of the first PPG signal is greater than the preset amplitude, or the amplitude of the second PPG signal is greater than the preset amplitude, the wearable device 100 can be based on parameters such as the first PPG signal or the second PPG signal or the blood pressure value.

[0250] In some embodiments, steps S908 and S909 may not be executed. After prompting the user to increase or decrease the pressing force, the wearable device 100 may directly collect the second PPG signal and determine whether the amplitude of the second PPG signal is greater than a preset amplitude. If the amplitude of the second PPG signal is less than the preset amplitude, the wearable device 100 continues to prompt the user to increase or decrease the pressing force based on the pressure value collected by the pressure sensor on the first button until the amplitude of the second PPG signal is greater than the preset amplitude.

[0251] In some embodiments, the third and fourth thresholds may be the same. The third or fourth threshold may be the pressure value corresponding to the pressing force when the amplitude of the PPG signal reaches its maximum amplitude. Upon determining that the amplitude of the first PPG signal is less than a preset amplitude, the wearable device 100 may obtain the pressure value acquired by the pressure sensor in the first button. If the pressure value is less than the third or fourth threshold, the wearable device 100 may prompt the user to increase the pressing force. If the pressure value is greater than the third or fourth threshold, the wearable device 100 may prompt the user to reduce the pressing force. After the user adjusts the pressing force, the wearable device 100 continues to acquire the second PPG signal acquired by the PPG sensor in the first button. When the amplitude of the second PPG signal exceeds the preset amplitude, the process ends. If the amplitude of the second PPG signal is less than the preset amplitude, the wearable device 100 continues to prompt the user to increase or decrease the pressing force based on the pressure value acquired by the pressure sensor until the amplitude of the second PPG signal exceeds the preset amplitude.

[0252] In some embodiments, when it is determined that the amplitude of the first PPG signal is less than the preset amplitude, the wearable device 100 may not adjust the pressing force based on the pressure value collected by the pressure sensor in the first button.

[0253] In one possible implementation, when it is determined that the amplitude of the first PPG signal is less than a preset amplitude, the wearable device 100 may prompt the user to increase the pressing force. After the user increases the pressing force, if the amplitude of the PPG signal collected by the PPG sensor in the first button continues to decrease, the wearable device 100 may determine that the current user's pressing force is too great, causing the amplitude of the PPG signal to be less than the preset value. The wearable device 100 may then prompt the user to reduce the pressing force until the amplitude of the PPG signal is greater than the preset value, maintaining the current pressing force to measure blood pressure. After the user increases the pressing force, if the amplitude of the PPG signal collected by the PPG sensor in the first button gradually increases, the wearable device 100 may prompt the user to continue increasing the pressing force until the amplitude of the PPG signal is greater than the preset value, maintaining the current pressing force to measure blood pressure.

[0254] In other possible implementations, when it is determined that the amplitude of the first PPG signal is less than a preset amplitude, the wearable device 100 may prompt the user to reduce the pressing force. After the user reduces the pressing force, if the amplitude of the PPG signal collected by the PPG sensor in the first button continues to decrease, the wearable device 100 may determine that the current user's pressing force is too small, resulting in the amplitude of the PPG signal being less than the preset value. The wearable device 100 may then prompt the user to increase the pressing force until the amplitude of the PPG signal is greater than the preset value, maintaining the current pressing force to measure blood pressure. After the user reduces the pressing force, if the amplitude of the PPG signal collected by the PPG sensor in the first button gradually increases, the wearable device 100 may prompt the user to continue reducing the pressing force until the amplitude of the PPG signal is greater than the preset value, maintaining the current pressing force to measure blood pressure.

[0255] In some embodiments, the wearable device 100 can first monitor the pressure value corresponding to the pressing force so that the pressure value is between the first threshold and the second threshold, then monitor the PPG signal amplitude, and instruct the user to continue to increase or decrease the pressing force based on the PPG signal amplitude until the PPG signal amplitude is greater than the preset value.

[0256] Since the vascular expansion and contraction conditions of different users are different, even if the pressure value is between the first threshold and the second threshold, the PPG signal amplitude is still smaller than the preset value. Therefore, after adjusting the pressure, it is necessary to monitor the amplitude of the PPG signal so that the amplitude of the PPG signal is greater than the preset amplitude. In other words, this application can also be combined with Figure 7 and Figure 9 The embodiment adjusts the pressing force so that the PPG signal amplitude is greater than a preset value.

[0257] Optionally, the third threshold is less than the fourth threshold, the third threshold is greater than the first threshold, and the fourth threshold is less than the second threshold. In other words, the wearable device 100 can instruct the user to adjust the pressure value corresponding to the pressing force to between the first threshold and the second threshold based on the pressure value collected by the pressure sensor in the first button. If the amplitude of the PPG signal is still less than the preset amplitude, the wearable device 100 can continue to instruct the user to adjust the pressure value corresponding to the pressing force to between the third threshold and the fourth threshold, so that the amplitude of the PPG signal exceeds the preset amplitude.

[0258] In some embodiments, after instructing the user to adjust the pressure value corresponding to pressure to between the third and fourth thresholds, if the amplitude of the PPG signal remains below the preset amplitude, the wearable device 100 may continue to instruct the user to adjust the pressing force. When the pressing force exceeds the fifth threshold, the wearable device 100 may instruct the user to reduce the pressing force. When the pressing force is below the fifth threshold, the wearable device 100 may instruct the user to increase the pressing force until the amplitude of the PPG signal exceeds the preset amplitude. The fifth threshold is greater than the third threshold and less than the fourth threshold. The fifth threshold may be the pressure value corresponding to the pressing force when the amplitude of the PPG signal reaches its maximum amplitude.

[0259] 2. The wearable device 100 monitors the stability of the PPG signal.

[0260] The quality of the PPG signal is not only related to the amplitude of the PPG signal, but also to its stability. The wearable device 100 also needs to monitor the stability of the PPG signal. A stable PPG signal can mean that the difference between the amplitude of m consecutive PPG signal frames and a preset amplitude is within a first difference, meaning that the amplitude of the m consecutive PPG signal frames does not fluctuate significantly.

[0261] In some embodiments, when the wearable device 100 includes multiple PPG sensors, a stable PPG signal may refer to the PPG signals collected by each of the multiple PPG sensors being stable. For example, if a PPG sensor is provided on the button 101 of the wearable device 100 and a PPG sensor is provided on the wearing surface 105 of the wearable device 100, a stable PPG signal may refer to the PPG signal collected by the PPG sensor provided on the button 101 being stable and the PPG signal collected by the PPG sensor provided on the wearing surface 105 being stable.

[0262] When it is determined that the PPG signal is stable, the wearable device 100 can estimate the user's blood pressure value based on the collected PPG signal and other parameters.

[0263] When it is determined that the PPG signal is unstable, the wearable device 100 can also determine the cause of the unstable PPG signal and instruct the user to take relevant measures to eliminate the cause of the unstable PPG signal, so that the wearable device 100 can obtain a more stable PPG signal.

[0264] The reasons for the unstable PPG signal may include, but are not limited to, any one or more of the following: the user is exercising, the user is coughing, talking, breathing rapidly, etc. The reasons for the unstable PPG signal may also include other factors, which are not limited in this application.

[0265] In some embodiments, the wearable device 100 can obtain motion data collected by the motion sensor and sound signals collected by the microphone, and determine the cause of the unstable PPG signal based on the motion data and / or the sound signals collected by the microphone.

[0266] For example, when it is determined based on the motion data that the user is currently in motion, or when it is determined that the user has been in motion for a period of time before, the wearable device 100 may display Figure 11A The user interface shown, Figure 11A The user interface shown includes a prompt message "Don't move, please stay still", which is used to instruct the user to stay still during the blood pressure measurement process to improve the stability of the PPG signal collected by the wearable device 100 and improve the accuracy of the wearable device 100 estimating the user's blood pressure based on the PPG signal.

[0267] For example, when the user is determined to be coughing, talking, breathing rapidly, etc. based on the sound signal collected by the microphone, the wearable device 100 may display Figure 11B The user interface shown, Figure 11B The user interface shown includes a prompt message "Don't talk, please keep still", which is used to instruct the user to keep still during the blood pressure measurement process to improve the stability of the PPG signal collected by the wearable device 100 and improve the accuracy of the wearable device 100 estimating the user's blood pressure based on the PPG signal.

[0268] For example, when it is determined based on the motion data that the user is not in motion, and based on the sound signal collected by the microphone that the user is not coughing, talking, breathing rapidly, etc., the wearable device 100 can prompt the user to wait for a while before measuring blood pressure.

[0269] 2. The wearable device 100 monitors the quality of the ECG signal.

[0270] In some embodiments, when a user presses button 101 with a single finger, the first electrode on the surface of button 101 contacts the skin of the finger, and the electrode on the wearing surface (e.g., the second electrode) contacts the skin of the wrist, so that the first electrode and the second electrode form a loop, and the wearable device 100 can collect ECG signals through the first electrode and the second electrode. The wearable device 100 can estimate the user's blood pressure value based on parameters such as the ECG signal.

[0271] In order to improve the accuracy of the wearable device 100 estimating the user's blood pressure value based on parameters such as ECG signals, the wearable device 100 may monitor the quality of the ECG signal.

[0272] The quality of the ECG signal is also related to the stability of the ECG signal. The stability of the ECG signal can mean that the difference between the amplitude of m consecutive ECG frames and the preset amplitude is within a first difference, that is, the amplitude of the m consecutive ECG frames does not fluctuate much.

[0273] In some implementations, the ECG signal is unstable, which may also be referred to as the ECG signal experiencing baseline drift.

[0274] When it is determined that the ECG signal is stable, the wearable device 100 can estimate the user's blood pressure value based on the collected ECG signal and other parameters.

[0275] When it is determined that the ECG signal is unstable, the wearable device 100 can also determine the cause of the ECG signal instability and instruct the user to take relevant measures to eliminate the cause of the ECG signal instability, so that the wearable device 100 can obtain a more stable ECG signal.

[0276] The causes of ECG signal instability may include but are not limited to any one or more of the following: the wearable device 100 is not properly worn, the finger is not in good contact with the first button, etc. The causes of ECG signal instability may also include other factors, which are not limited in this application.

[0277] Optionally, a PPG sensor is provided on the wearing surface 105 of the wearable device 100. The wearable device 100 can obtain a bottom surface PPG signal collected by the PPG sensor provided on the wearing surface 105, and compare the bottom surface PPG signal with the bottom surface PPG signal when worn properly. If the bottom surface PPG signal is significantly different from the bottom surface PPG signal when worn properly, it can be determined that the wearable device 100 is not properly worn. If the bottom surface PPG signal is slightly different from the bottom surface PPG signal when worn properly, it can be determined that the wearable device 100 is properly worn.

[0278] For example, when it is determined based on the bottom PPG signal that the wearable device 100 is not properly worn, the wearable device 100 may display Figure 12A The user interface shown, Figure 12A The user interface shown includes a prompt message "Please select a suitable wearing position and number of buckles". The prompt message is used to instruct the user to wear the wearable device 100 appropriately. Wearing it too loose or too tight will affect the quality of the collected ECG signal.

[0279] Optionally, when it is determined based on the PPG signal at the bottom of the watch that the wearable device 100 is suitable for wearing, the wearable device 100 may also display Figure 12B The user interface shown, Figure 12B The user interface shown includes a prompt message "Please keep your fingers in good contact with the side buttons", which is used to instruct the user to keep their fingers in full contact with the side buttons to avoid affecting the quality of the collected ECG signals due to poor contact.

[0280] Optionally, after the user adjusts the posture of pressing the side button and the wearable device 100 is properly worn, the wearable device 100 can prompt the user to wait for a while before measuring the blood pressure.

[0281] Figure 13 A flow chart of a blood pressure measurement method provided in this application.

[0282] S1301: The wearable device obtains a first pressure value of a heart rate sensor through a pressure sensor.

[0283] Optionally, the heart rate sensor can be any one of a photoplethysmography (PPG) sensor, a laser sensor, an ultrasonic sensor, and a magnetic induction sensor. The embodiment of the present application is described by taking the heart rate sensor being a PPG sensor and the heart rate data being a PPG signal as an example.

[0284] Optionally, a first button is provided on the side of the watch body of the wearable device, and a heart rate sensor and a pressure sensor are provided on the first button. When blood pressure needs to be measured, the user can press the first button with one finger, and the wearable device can obtain the user's blood pressure value based on the physiological signal collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0285] Optionally, a heart rate sensor and a pressure sensor are provided on the wearing surface of the wearable device. When blood pressure needs to be measured, the wearable device can obtain the user's blood pressure value based on the physiological signals collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0286] Optionally, the wearable device can directly obtain the first pressure value of the heart rate sensor through the pressure sensor, and prompt the user to adjust the pressure value to within a preset range when the first pressure value is not within the preset range. The preset range can be a pressure value greater than a first threshold and less than a second threshold.

[0287] S1302: Prompt the user to increase or decrease the pressing force of the heart rate sensor according to the first pressure value.

[0288] The amplitude of the physiological signal is related to the magnitude of the pressure value. When the first pressure value is within a preset range, the amplitude of the physiological signal collected by the heart rate sensor is greater than the preset amplitude, and the wearable device can measure blood pressure with high accuracy based on the physiological signal collected by the heart rate sensor and the pressure value.

[0289] Optionally, the wearable device may also first determine the amplitude of the physiological data collected by the heart rate sensor. When the amplitude of the physiological data collected by the heart rate sensor is less than a preset amplitude, the wearable device obtains a first pressure value of the heart rate sensor through the pressure sensor. When the first pressure value is not within a preset range, the user is prompted to adjust the pressure value to within the preset range.

[0290] Optionally, the wearable device may first obtain the pressure value of the heart rate sensor through the pressure sensor. If the first pressure value is not within a preset range, the wearable device may prompt the user to adjust the pressure value to within the preset range. The wearable device may then determine whether the amplitude of the physiological data collected by the heart rate sensor is greater than a preset amplitude. If the amplitude of the physiological data collected by the heart rate sensor is less than the preset amplitude, the wearable device may obtain the first pressure value of the heart rate sensor through the pressure sensor again, and based on the first pressure value, prompt the user to increase or decrease the pressing force so that the amplitude of the physiological data collected by the heart rate sensor is greater than the preset amplitude.

[0291] Based on the above analysis, during the blood pressure measurement process, if the first pressure value collected by the pressure sensor is not within the preset range, the wearable device can prompt the user to adjust the pressing force, such as increasing the pressing force or decreasing the pressing force, so that the first pressure value is within the preset range, so as to obtain a physiological signal collected by the heart rate sensor with an amplitude greater than the preset value, so as to improve the accuracy of the blood pressure value measured by the wearable device based on the physiological signal collected by the heart rate sensor and the first pressure value.

[0292] In a possible implementation, the electronic device further includes an electrocardiogram sensor, and the method further includes: detecting blood pressure based on a first physiological signal acquired by the heart rate sensor, a second pressure value of the pressure sensor, and a second physiological signal acquired by the electrocardiogram sensor.

[0293] Optionally, the electrocardiogram sensor may be an ECG sensor.

[0294] Among them, the second pressure value is the pressure value collected by the pressure sensor after the user adjusts the pressing force. The amplitude of the first physiological signal is greater than the preset amplitude, and the amplitude of the first physiological signal is stable, and the amplitude of the second physiological signal obtained by the electrocardiogram sensor is also stable. In this way, the wearable device can obtain blood pressure values ​​based on the first physiological signal, the second pressure value and the second physiological signal. On the one hand, compared with the method of measuring blood pressure with an airbag, the comfort of measuring blood pressure based on the first physiological signal, the second pressure value and the second physiological signal in this application is higher. On the other hand, the quality of the first physiological signal, the second pressure value and the second physiological signal all meet the requirements, which improves the accuracy of the wearable device in measuring blood pressure values ​​based on the first physiological signal, the second pressure value and the second physiological signal.

[0295] In one possible implementation, the user is prompted to increase or decrease the pressing force of the heart rate sensor according to the first pressure value, specifically including: when it is detected that the first pressure value is greater than a first threshold, the user is prompted to reduce the pressing force of the heart rate sensor; when it is detected that the first pressure value is less than a second threshold, the user is prompted to increase the pressing force of the heart rate sensor.

[0296] When the first pressure value is greater than the first threshold and less than the second threshold, it can be considered that the amplitude of the physiological signal collected by the heart rate sensor is greater than the preset amplitude. Therefore, during the blood pressure measurement process, the wearable device can prompt the user to increase or decrease the pressing force based on the magnitude of the first pressure value, so that the pressure value collected by the pressure sensor is greater than the first threshold and less than the second threshold. In turn, the wearable device can obtain a physiological signal with an amplitude greater than the preset amplitude. Physiological signals with an amplitude greater than the preset amplitude have stronger anti-interference capabilities and will not be drowned out by noise, thereby improving the accuracy of blood pressure measurement by the wearable device based on the physiological signal collected by the heart rate sensor.

[0297] For example, you can refer to Figure 7 Description in the Examples.

[0298] In one possible implementation, obtaining the first pressure value of the heart rate sensor through the pressure sensor specifically includes: determining whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than a preset amplitude; if it is less than the preset amplitude, obtaining the first pressure value of the heart rate sensor through the pressure sensor.

[0299] Optionally, before obtaining the first pressure value of the heart rate sensor through the pressure sensor, the wearable device can first obtain the amplitude of the third physiological signal obtained by the heart rate sensor. And based on the amplitude of the third physiological signal, it is confirmed whether the pressing force needs to be adjusted. When the amplitude of the third physiological signal is less than the preset value, it means that the user's pressing force is too large or too small, causing the amplitude of the third physiological signal to be less than the preset value. The wearable device can then obtain the first pressure value of the heart rate sensor. So as to prompt the user to increase or decrease the pressing force based on the first pressure value. In other words, the wearable device can first monitor the amplitude of the third physiological signal obtained by the heart rate sensor, and then confirm whether to adjust the pressing force based on the amplitude of the third physiological signal.

[0300] Optionally, the wearable device may first obtain the pressure value of the heart rate sensor through the pressure sensor, adjust the pressure value to within a preset range, and then obtain the amplitude of the third physiological signal obtained by the heart rate sensor. This is because the degree of contraction of blood vessels in different users is different. Even if the pressure value is within the preset range, the amplitude of the physiological signal obtained by the heart rate sensor is still less than the preset amplitude. Therefore, after adjusting the pressure value of the pressure sensor to within the preset range, the wearable device still needs to monitor whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude. When it is less than the preset amplitude, the wearable device can obtain the first pressure value of the heart rate sensor again through the pressure sensor, and prompt the user to increase or decrease the pressing force based on the first pressure value, so that the amplitude of the physiological signal obtained by the heart rate sensor is greater than the preset amplitude. In other words, the wearable device can first monitor the pressing force, adjust the pressing force to within the preset range, and then obtain the amplitude of the third physiological signal, and confirm whether to further adjust the pressing force based on the amplitude of the third physiological signal.

[0301] For example, you can refer to Figure 9 Description in the Examples.

[0302] In one possible implementation, after prompting the user to increase or decrease the pressing force of the heart rate sensor according to the first pressure value, the method also includes: determining whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude; if it is greater than the preset amplitude, obtaining the first physiological signal through the heart rate sensor.

[0303] Optionally, if the amplitude of the third physiological signal is less than a preset amplitude, the user is prompted to increase or decrease the pressing force of the heart rate sensor.

[0304] In this way, the wearable device can adjust the pressing force to obtain a first physiological signal with an amplitude greater than a preset amplitude.

[0305] In a possible implementation, the method further includes: displaying a pressure indicator bar, the pressure indicator bar being used to indicate the pressure value of the heart rate sensor obtained by the pressure sensor. For example, the pressure indicator bar may be Figure 10A Pressure indicator bar 1001 is shown.

[0306] Optionally, the wearable device can also display a pressure threshold interval to prompt the user whether the pressure value corresponding to the current pressing force is within the pressure threshold interval. For example, the pressure threshold interval can be Figure 10A The preset pressure range 1002 is shown.

[0307] In one possible implementation, before the heart rate sensor obtains the first physiological signal, the method also includes: determining whether the amplitude of the physiological signal obtained by the heart rate sensor is stable; if it is unstable, determining whether the user is in a state of motion based on the sound signal and motion data collected by the microphone; if the user is in a state of motion, prompting the user to remain still.

[0308] When the wearable device includes multiple heart rate sensors, the stable amplitude of the physiological signal acquired by the heart rate sensors may refer to the stable amplitude of the physiological signal acquired by any one of the multiple heart rate sensors, or the stable amplitude of the physiological signal acquired by all the multiple heart rate sensors.

[0309] The motion state may refer to the current state of the user being in motion, or may refer to the state of the user being in motion within a previous period of time.

[0310] Optionally, the wearable device can confirm whether the user is in motion based on motion data collected by the motion sensor.

[0311] Optionally, the wearable device may also detect whether the amplitude of the physiological signal is stable before obtaining the first pressure value.

[0312] For example, how to monitor whether the amplitude of the physiological signal obtained by the heart rate sensor is stable, you can refer to Figures 10A-10B Description in the Examples.

[0313] In one possible implementation, the wearable device can also monitor whether the ECG signal is stable. Figures 12A-12B Description in the Examples.

[0314] Figure 14 A flow chart of another blood pressure measurement method provided in this application.

[0315] S1401. Obtain a first pressure value of a heart rate sensor through a pressure sensor.

[0316] S1402: Detect blood pressure based on a first physiological signal acquired by a heart rate sensor, a first pressure value, and a second physiological signal acquired by an electrocardiogram sensor.

[0317] Optionally, the wearable device is a watch or a bracelet.

[0318] Optionally, a first button is provided on the side of the watch body of the wearable device, and a heart rate sensor and a pressure sensor are provided on the first button. When blood pressure needs to be measured, the user can press the first button with one finger, and the wearable device can obtain the user's blood pressure value based on the physiological signal collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0319] Optionally, a heart rate sensor and a pressure sensor are provided on the wearing surface of the wearable device. When blood pressure needs to be measured, the wearable device can obtain the user's blood pressure value based on the physiological signals collected by the heart rate sensor and the pressure value collected by the pressure sensor.

[0320] Optionally, the heart rate sensor can be any one of a photoplethysmography (PPG) sensor, a laser sensor, an ultrasonic sensor, and a magnetic induction sensor. The embodiment of the present application is described by taking the heart rate sensor being a PPG sensor and the heart rate data being a PPG signal as an example.

[0321] Optionally, the electrocardiogram sensor may be an ECG sensor.

[0322] The amplitude of the first physiological signal is greater than a preset amplitude, the amplitude of the first physiological signal is stable, and the amplitude of the second physiological signal is also stable. The first pressure value is collected by the pressure sensor when the amplitude of the first physiological signal is greater than a preset amplitude, the amplitude of the first physiological signal is stable, and the amplitude of the second physiological signal is also stable.

[0323] In this way, after the quality of the first physiological signal, the first pressure value, and the second physiological signal all meet the requirements, the wearable device can detect blood pressure through the first physiological signal, the first pressure value, and the second physiological signal. On the one hand, compared with the method of measuring blood pressure with an airbag, the comfort of measuring blood pressure based on the first physiological signal, the second pressure value, and the second physiological signal in this application is higher. On the other hand, the quality of the first physiological signal, the second pressure value, and the second physiological signal all meet the requirements, which improves the accuracy of the wearable device in measuring blood pressure based on the first physiological signal, the second pressure value, and the second physiological signal.

[0324] In one possible implementation, obtaining the first pressure value of the heart rate sensor through the pressure sensor specifically includes: determining whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than a preset amplitude; if it is greater than the preset amplitude, obtaining the first pressure value of the heart rate sensor through the pressure sensor.

[0325] Optionally, before obtaining the first pressure value of the heart rate sensor through the pressure sensor, the wearable device may first obtain the amplitude of the third physiological signal obtained by the heart rate sensor. And based on the amplitude of the third physiological signal, it is confirmed whether the pressing force needs to be adjusted. When the amplitude of the third physiological signal is greater than the preset value, it means that the user's pressing force is appropriate and there is no need to adjust the pressing force. The wearable device can then obtain the first pressure value of the heart rate sensor through the pressure sensor. When the amplitude of the third physiological signal is less than the preset value, it means that the user's pressing force is too large or too small, resulting in the amplitude of the third physiological signal being less than the preset value. The wearable device can obtain the pressure value of the heart rate sensor through the pressure sensor, so as to prompt the user to increase or decrease the pressing force based on the pressure value, until the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset value after the user adjusts the pressing force.

[0326] Optionally, the wearable device may first obtain the pressure value of the heart rate sensor via a pressure sensor. After adjusting the pressure value to within a preset range, the wearable device may then obtain the amplitude of the third physiological signal obtained by the heart rate sensor. When the amplitude of the third physiological signal is greater than the preset value, it indicates that the user's pressing force is appropriate and no adjustment is required. The wearable device may then obtain the first pressure value of the heart rate sensor via the pressure sensor. If the amplitude of the third physiological signal is less than the preset value, the pressing force may need to be adjusted. This is because different users have different degrees of vascular constriction. Even if the pressure value is within the preset range, the amplitude of the physiological signal obtained by the heart rate sensor may still be less than the preset amplitude. Therefore, after adjusting the pressure value of the pressure sensor to within the preset range, the wearable device may also monitor whether the amplitude of the third physiological signal obtained by the heart rate sensor is greater than the preset amplitude. If it is less than the preset amplitude, the wearable device may again obtain the pressure value of the heart rate sensor via the pressure sensor and, based on this pressure value, prompt the user to increase or decrease the pressing force until the amplitude of the physiological signal obtained by the heart rate sensor exceeds the preset amplitude.

[0327] For example, you can refer to Figure 9 Description in the Examples.

[0328] In one possible implementation, before obtaining the first pressure value of the heart rate sensor through the pressure sensor, the method also includes: obtaining the second pressure value of the heart rate sensor through the pressure sensor; if the second pressure value is greater than the first threshold, prompting the user to reduce the pressure of the pressing operation; if the second pressure value is less than the second threshold, prompting the user to increase the pressure of the pressing operation.

[0329] The amplitude of the physiological signal collected by the heart rate sensor is related to the size of the pressure value. When the first pressure value is within the preset range, the amplitude of the physiological signal collected by the heart rate sensor is greater than the preset amplitude, and the wearable device has a higher accuracy in measuring blood pressure values ​​based on the physiological signal collected by the heart rate sensor. Based on this, during the blood pressure measurement process, if the first pressure value collected by the pressure sensor is not within the preset range, the wearable device can prompt the user to adjust the pressing force, such as increasing or decreasing the pressing force, so that the first pressure value is within the preset range, in order to obtain a physiological signal with an amplitude greater than the preset value, thereby improving the accuracy of the wearable device in measuring blood pressure values ​​based on the physiological signal collected by the heart rate sensor.

[0330] For example, the pressure sensor can acquire a second pressure value. When the second pressure value is greater than a first threshold, the user is prompted to reduce the pressure of the pressing operation; if the second pressure value is less than the second threshold, the user is prompted to increase the pressure of the pressing operation. By ensuring that the pressure value acquired by the pressure sensor is between the first and second thresholds, the wearable device can acquire a physiological signal with an amplitude greater than a preset amplitude through the heart rate sensor. Physiological signals with an amplitude greater than the preset amplitude have stronger anti-interference capabilities and will not be drowned out by noise, thereby improving the accuracy of blood pressure measurement by the wearable device based on the physiological signal collected by the heart rate sensor.

[0331] For example, you can refer to Figure 7 Description in the Examples.

[0332] In a possible implementation, the method further includes: displaying a pressure indicator bar, the pressure indicator bar being used to indicate the pressure value of the heart rate sensor obtained by the pressure sensor. For example, the pressure indicator bar may be Figure 10A Pressure indicator bar 1001 is shown.

[0333] Optionally, the wearable device can also display a pressure threshold interval to prompt the user whether the pressure value corresponding to the current pressing force is within the pressure threshold interval. For example, the pressure threshold interval can be Figure 10A The preset pressure range 1002 is shown.

[0334] In one possible implementation, before the heart rate sensor obtains the first physiological signal, the method also includes: determining whether the amplitude of the physiological signal obtained by the heart rate sensor is stable; if it is unstable, determining whether the user is in a state of motion based on the sound signal and motion data collected by the microphone; if the user is in a state of motion, prompting the user to remain still.

[0335] When the wearable device includes multiple heart rate sensors, the stable amplitude of the physiological signal acquired by the heart rate sensors may refer to the stable amplitude of the physiological signal acquired by any one of the multiple heart rate sensors, or the stable amplitude of the physiological signal acquired by all the multiple heart rate sensors.

[0336] The motion state may refer to the current state of the user being in motion, or may refer to the state of the user being in motion within a previous period of time.

[0337] Optionally, the wearable device can confirm whether the user is in motion based on motion data collected by the motion sensor.

[0338] Optionally, the wearable device may also detect whether the amplitude of the physiological signal obtained by the heart rate sensor is stable before obtaining the first pressure value.

[0339] For example, how to monitor whether the amplitude of the physiological signal obtained by the heart rate sensor is stable, you can refer to Figures 10A-10B Description in the Examples.

[0340] In one possible implementation, the wearable device can also monitor whether the ECG signal is stable. Figures 12A-12B Description in the Examples.

[0341] The present application provides a wearable device, which includes a memory and a processor; wherein the memory and the processor are coupled, the memory is used to store a computer program, and when the processor executes the computer program, the wearable device executes Figure 13 or Figure 14 A blood pressure measurement method is shown.

[0342] The present application provides a computer-readable storage medium including instructions, which, when executed on a wearable device, causes the wearable device to execute Figure 13 or Figure 14 A blood pressure measurement method is shown.

[0343] The present application provides a chip system, which includes one or more processors, which are used to call computer instructions to enable the wearable device to execute Figure 13 or Figure 14 A blood pressure measurement method is shown.

[0344] The present application provides a computer program product comprising instructions, which, when executed on a wearable device, causes the wearable device to execute Figure 13 or Figure 14 A blood pressure measurement method is shown.

[0345] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0346] It is understood that the various user interfaces described in the embodiments of this application are merely exemplary interfaces and do not limit the scope of this application. In other embodiments, the user interface may adopt a different interface layout, include more or fewer controls, and add or remove other functional options. As long as they are based on the same inventive concept provided by this application, they are all within the scope of protection of this application.

[0347] It should be noted that, without causing any contradiction or conflict, any feature in any embodiment of the present application, or any part of any feature, can be combined, and the combined technical solution is also within the scope of the embodiments of the present application.

[0348] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A blood pressure measurement method, characterized in that: Applied to a wearable device including a heart rate sensor and a pressure sensor, the method includes: obtaining a first pressure value of the heart rate sensor through the pressure sensor; The user is prompted to increase or decrease the pressing force of the heart rate sensor according to the first pressure value.

2. The method according to claim 1, characterized in that The electronic device further includes an electrocardiogram sensor, and the method further includes: Blood pressure is detected according to the first physiological signal acquired by the heart rate sensor, the second pressure value of the pressure sensor, and the second physiological signal acquired by the electrocardiogram sensor.

3. The method according to claim 2, characterized in that The electrocardiogram sensor is an ECG sensor, and the heart rate sensor is a PPG sensor.

4. The method according to claim 3, characterized in that Prompting the user to increase or decrease the pressing force of the heart rate sensor according to the first pressure value specifically includes: When detecting that the first pressure value is greater than a first threshold, prompting the user to reduce the pressing force of the heart rate sensor; When it is detected that the first pressure value is less than a second threshold, the user is prompted to increase the pressing force of the heart rate sensor.

5. The method according to any one of claims 1 to 4, characterized in that The obtaining, by the pressure sensor, a first pressure value of the heart rate sensor specifically includes: determining whether the amplitude of the third physiological signal acquired by the heart rate sensor is greater than a preset amplitude; If it is less than the preset amplitude, the first pressure value of the heart rate sensor is obtained through the pressure sensor.

6. The method according to any one of claims 2 to 4, characterized in that: After prompting the user to increase or decrease the pressing force of the heart rate sensor according to the first pressure value, the method further includes: determining whether the amplitude of the third physiological signal acquired by the heart rate sensor is greater than a preset amplitude; If the amplitude is greater than the preset amplitude, acquiring the first physiological signal through the heart rate sensor; If the amplitude is less than the preset amplitude, the user is prompted to increase or decrease the pressing force of the heart rate sensor.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: A pressure indicator bar is displayed, where the pressure indicator bar is used to indicate the pressure value of the heart rate sensor acquired by the pressure sensor.

8. The method according to any one of claims 2 to 4, characterized in that: Before the heart rate sensor acquires the first physiological signal, the method further includes: Determining whether the amplitude of the physiological signal acquired by the heart rate sensor is stable; If it is unstable, the user is judged to be in motion based on the sound signal and motion data collected by the microphone; If the user is in motion, prompt the user to remain still.

9. A blood pressure measurement method, characterized in that: Applied to a wearable device including a heart rate sensor, an electrocardiogram sensor, and a pressure sensor, the method includes: obtaining a first pressure value of the heart rate sensor through the pressure sensor; Blood pressure is detected according to a first physiological signal acquired by the heart rate sensor, the first pressure value, and a second physiological signal acquired by the electrocardiogram sensor.

10. The method according to claim 9, characterized in that The electrocardiogram sensor is an ECG sensor, and the heart rate sensor is a PPG sensor.

11. The method according to claim 9 or 10, characterized in that The obtaining, by the pressure sensor, a first pressure value of the heart rate sensor specifically includes: determining whether the amplitude of the third physiological signal acquired by the heart rate sensor is greater than a preset amplitude; If it is greater than the preset amplitude, the first pressure value of the heart rate sensor is obtained through the pressure sensor.

12. The method according to any one of claims 9 to 11, further comprising: before acquiring the first pressure value of the heart rate sensor through the pressure sensor; Obtaining a second pressure value of the heart rate sensor by the pressure sensor; If the second pressure value is greater than the first threshold, prompting the user to reduce the pressure of the pressing operation; If the second pressure value is less than the second threshold, the user is prompted to increase the pressure of the pressing operation.

13. The method according to any one of claims 9 to 12, characterized in that: The method further comprises: A pressure indicator bar is displayed, where the pressure indicator bar is used to indicate the pressure value of the heart rate sensor acquired by the pressure sensor.

14. The method according to any one of claims 9 to 13, characterized in that: Before the heart rate sensor acquires the first physiological signal, the method further includes: Determining whether the amplitude of the physiological signal acquired by the heart rate sensor is stable; If it is unstable, the user is judged to be in motion based on the sound signal and motion data collected by the microphone; If the user is in motion, prompt the user to remain still.

15. The method according to any one of claims 1 to 8 or claims 9 to 14, characterized in that: The wearable device is a watch or a bracelet.

16. The method according to any one of claims 1 to 8 or claims 9 to 14, characterized in that: The wearable device includes a watch body provided with a first button, and the first button includes the heart rate sensor and the pressure sensor.

17. A wearable device, characterized in that: The wearable device includes a heart rate sensor, a pressure sensor, a memory, and a processor; wherein the heart rate sensor, the pressure sensor, the memory, and the processor are coupled, and the memory is used to store a computer program. When the processor executes and calls the computer program, the wearable device executes the method described in any one of claims 1-8 or claims 9-16.

18. A computer-readable storage medium comprising instructions, characterized in that: When the instruction is executed on the wearable device, the wearable device executes the method according to any one of claims 1 to 8 or claims 9 to 16.

19. A chip system, characterized in that: The chip system includes one or more processors, and the processor is used to call computer instructions to enable the wearable device to execute the method of any one of claims 1-8 or claims 9-16.

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