Blood pressure sensor, wearable device, and blood pressure measurement method

Abstract

Provided in the embodiments of the present application are a blood pressure sensor, a wearable device, and a blood pressure measurement method. The blood pressure sensor comprises a magnetic source and a magnetic sensor. A buffer is arranged between the magnetic sensor and a skin and used for weakening vibration of the magnetic sensor when an artery vibrates, or a buffer is arranged between the magnetic source and the skin and used for weakening vibration of the magnetic source when an artery vibrates. The magnetic sensor is used for collecting magnetic field change data. The magnetic field change data is used for generating blood pressure data, and the magnetic field change is generated based on relative displacement between the magnetic source and the magnetic sensor caused by the artery vibration. By adopting the means, the generation of accurate blood pressure data is facilitated. Moreover, the scheme requires no other additional user operations, thereby improving the convenience and comfort of the user.

Description

Blood pressure sensor, wearable device, and blood pressure measurement method

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 27, 2023, with application number 202311831433.7, and priority to the Chinese patent application entitled "Blood Pressure Sensor, Wearable Device and Blood Pressure Measurement Method", all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of blood pressure measurement, and in particular to a blood pressure sensor, a wearable device, and a blood pressure measurement method. Background Art

[0003] With an aging population, cardiovascular health is a growing concern. Current smart wearable blood pressure measurement devices use built-in micro-airbags. For example, Omron's device uses an oscillometric method to measure blood pressure. However, the user experience is uncomfortable during the airbag pressurization process. Summary of the Invention

[0004] This application discloses a blood pressure sensor, a wearable device, and a blood pressure measurement method, which can improve the accuracy of blood pressure measurement and enhance user experience.

[0005] In a first aspect, embodiments of the present application provide a blood pressure sensor comprising a magnetic source and a magnetic sensor. A buffer is provided between the magnetic sensor and the skin to attenuate vibrations of the magnetic sensor when arteries vibrate. The magnetic sensor is configured to collect magnetic field variation data. This magnetic field variation data is used to generate blood pressure data. The magnetic field variation is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the arterial vibration.

[0006] An embodiment of the present application provides a blood pressure sensor comprising a magnetic source, a magnetic sensor, and a buffer disposed between the magnetic sensor and the skin. The buffer is used to reduce the vibration of the magnetic sensor when the artery vibrates, and the magnetic sensor is used to collect magnetic field change data, which is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the above-mentioned arterial vibration. In this way, based on the provision of the buffer, it can be ensured that only the magnetic source is vibrating between the magnetic source and the magnetic sensor, and relatively accurate magnetic field change data can be collected based on the relative displacement between the magnetic source and the magnetic sensor, which helps to generate accurate blood pressure data. Moreover, this solution does not require the user to perform any additional operations, thereby improving the user's convenience and comfort.

[0007] It is understandable that the skin can be human skin or animal skin.

[0008] In a possible implementation, the buffer is sponge or foam plastic.

[0009] This example can help reduce the vibration of the magnetic sensor or magnetic source, thereby improving the accuracy of blood pressure measurement.

[0010] Optionally, the size of the buffer may be slightly larger than the magnetic sensor or magnetic source located thereon, so as to better achieve the buffering purpose.

[0011] In a possible implementation, the magnetic source is a permanent magnet or an electromagnet.

[0012] In a possible implementation, the magnetic sensor is a magnetoresistive sensor.

[0013] Exemplarily, the magnetoresistive sensor may be at least one of the following: anisotropy magnetoresistive (AMR), giant magnetoresistive (GMR), and tunnel magnetoresistive (TMR).

[0014] In one possible implementation, the magnetic source is attached to the skin. Alternatively, a hard object is placed between the magnetic source and the skin. It is understood that the hard object serves to conduct the mechanical vibration waves. In other words, the hard object does not affect the effect of the magnetic source vibrating along with the artery. For example, the hard object can be hard plastic or other non-magnetic materials.

[0015] In one possible implementation, a preset distance is provided between the magnetic source and the magnetic sensor. For example, the preset distance may be between 1 mm and 10 cm. This ensures that the magnetic field changes caused by pulse vibrations can be effectively captured.

[0016] In a possible implementation, there are multiple magnetic sources, and the multiple magnetic sources are arranged in an array.

[0017] Based on this example, it can be ensured that the magnetic source can better cover the arterial area, which can solve the problems in actual use such as the thin pulse, difficulty in coverage, and difficulty in aligning the artery.

[0018] In a possible implementation, there may be multiple magnetic sensors, for example, arranged in an array or other arrangements.

[0019] Based on this design, the accuracy of the collected magnetic field change data can be improved, and the accuracy of blood pressure data measurement can be improved.

[0020] In a possible implementation, the magnetic source and the magnetic sensor are wrapped and packaged together with a soft magnetic material.

[0021] This is done so as to isolate possible interference caused by external magnetic fields. It can be understood that the magnetic source, magnetic sensor and buffer are all packaged in one piece.

[0022] In another possible implementation, the magnetic source and the magnetic sensor are separate. For example, the magnetic sensor in the blood pressure sensor is located in the body of the wearable device, and the magnetic source in the blood pressure sensor is located in the strap of the wearable device.

[0023] In a second aspect, embodiments of the present application provide another blood pressure sensor, comprising a magnetic source and a magnetic sensor. A buffer is provided between the magnetic source and the skin, the buffer being used to attenuate vibrations of the magnetic source when arteries vibrate. The magnetic sensor is used to collect magnetic field variation data. This magnetic field variation data is used to generate blood pressure data. The magnetic field variation is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the arterial vibration.

[0024] An embodiment of the present application provides a blood pressure sensor comprising a magnetic source, a magnetic sensor, and a buffer disposed between the magnetic source and the skin. The buffer is used to reduce the vibration of the magnetic source when the artery vibrates, and the magnetic sensor is used to collect magnetic field change data, which is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the above-mentioned arterial vibration. In this way, based on the provision of the buffer, it can be ensured that only the magnetic sensor is vibrating between the magnetic source and the magnetic sensor, and relatively accurate magnetic field change data can be collected based on the relative displacement between the magnetic source and the magnetic sensor, which helps to generate accurate blood pressure data. Moreover, this solution does not require the user to perform any additional operations, thereby improving the user's convenience and comfort.

[0025] It is understandable that the skin can be human skin or animal skin.

[0026] In a possible implementation, the buffer is sponge or foam plastic.

[0027] This example can help reduce the vibration of the magnetic sensor or magnetic source, thereby improving the accuracy of blood pressure measurement.

[0028] Optionally, the size of the buffer may be slightly larger than the magnetic sensor or magnetic source located thereon, so as to better achieve the buffering purpose.

[0029] In a possible implementation, the magnetic source is a permanent magnet or an electromagnet.

[0030] In a possible implementation, the magnetic sensor is a magnetoresistive sensor.

[0031] Exemplarily, the magnetoresistive sensor may be at least one of the following: anisotropic magnetoresistive AMR, giant magnetoresistive GMR, and tunnel magnetoresistive TMR.

[0032] In one possible implementation, the magnetic sensor is attached to the skin. Alternatively, a hard object is placed between the magnetic sensor and the skin. It is understood that the hard object serves to conduct the mechanical vibration waves. In other words, the hard object does not affect the magnetic sensor's ability to follow the arterial vibration. For example, the hard object can be hard plastic or other non-magnetic materials.

[0033] In one possible implementation, a preset distance is provided between the magnetic source and the magnetic sensor. For example, the preset distance may be between 1 mm and 10 cm. This ensures that the magnetic field changes caused by pulse vibrations can be effectively captured.

[0034] In a possible implementation, there are multiple magnetic sensors, and the multiple magnetic sensors are arranged in an array.

[0035] Based on this design, it can ensure better coverage of the arterial area, which can solve the problems in actual use such as the thin pulse, difficulty in coverage, and difficulty in aligning the artery. It can also improve the accuracy of the collected magnetic field change data and the accuracy of blood pressure data measurement.

[0036] In a possible implementation, there may be multiple magnetic sources.

[0037] In a possible implementation, the magnetic source and the magnetic sensor are wrapped and packaged together with a soft magnetic material.

[0038] This is done so as to isolate possible interference caused by external magnetic fields. It can be understood that the magnetic source, magnetic sensor and buffer are all packaged in one piece.

[0039] In another possible implementation, the magnetic source and the magnetic sensor are separate. For example, the magnetic source is located on the body of the wearable device, and the magnetic sensor is located on the strap of the wearable device.

[0040] In a third aspect, an embodiment of the present application provides a wearable device, comprising a blood pressure sensor provided in any possible implementation of the first aspect or any possible implementation of the second aspect.

[0041] In one possible implementation, the wearable device includes a watch body and a watch strap, the magnetic sensor in the blood pressure sensor is located on the watch body, and the magnetic source in the blood pressure sensor is located on the watch strap, or the magnetic source is located on the watch body, and the magnetic sensor is located on the watch strap.

[0042] In one possible implementation, the wearable device may be a pair of glasses, comprising a first portion and a second portion. The magnetic sensor in the blood pressure sensor is located in the first portion, and the magnetic source in the blood pressure sensor is located in the second portion. For example, the first portion may be the frame, and the second portion may be the temple. Alternatively, the first portion may be the temple, and the second portion may be the frame. Alternatively, the first or second portion may be a nose pad. For example, the temple or nose pad may be positioned proximal to a facial artery, though this is not a limitation in this embodiment.

[0043] In a possible implementation, the wearable device further includes a display screen.

[0044] In a fourth aspect, an embodiment of the present application provides a wearable device comprising a watch body and a watch strap, and further comprising a magnetic source and a magnetic sensor. The magnetic sensor is located on the watch body, and the magnetic source is located on the watch strap; or the magnetic source is located on the watch body, and the magnetic sensor is located on the watch strap;

[0045] The magnetic sensor is used to collect magnetic field change data, which is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the arterial vibration.

[0046] In a fifth aspect, the present application provides a blood pressure measurement method that can be performed by the above-mentioned wearable device, including: collecting magnetic field change data, where the magnetic field change is generated based on the relative displacement caused by arterial vibration; and generating blood pressure data based on the magnetic field change data.

[0047] In an embodiment of the present application, blood pressure data is generated based on the magnetic field variation data generated by the relative displacement caused by arterial vibration. This example can collect relatively accurate magnetic field variation data based on the relative displacement caused by arterial vibration, which helps generate accurate blood pressure data.

[0048] In a sixth aspect, the present application provides a blood pressure measurement device comprising a processor and a memory; wherein the memory is used to store program code, and the processor is used to call the program code to execute the method provided in the fifth aspect.

[0049] In a seventh aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method provided in the fifth aspect.

[0050] In an eighth aspect, the present application provides a computer program product, which, when executed on a computer, enables the computer to execute the method provided in any possible implementation of the fifth aspect.

[0051] It is understandable that the wearable device described in the third aspect, the wearable device described in the fourth aspect, the blood pressure measurement method described in the fifth aspect, the blood pressure measurement device described in the sixth aspect, the computer-readable storage medium described in the seventh aspect, or the computer program product described in the eighth aspect are all related to any of the blood pressure sensors provided in the first aspect and any of the blood pressure sensors provided in the second aspect. Therefore, the beneficial effects that can be achieved can be referenced to the beneficial effects of the corresponding methods and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The following is an introduction to the drawings used in the embodiments of this application.

[0053] FIG1A is a schematic diagram of a wearable device provided in an embodiment of the present application;

[0054] FIG1B is a schematic structural diagram of a wearable device provided in an embodiment of the present application;

[0055] FIG1C is a schematic diagram of the hardware structure of a wearable device provided in an embodiment of the present application;

[0056] FIG1D is a schematic diagram of another wearable device provided in an embodiment of the present application;

[0057] FIG1E is a schematic diagram of another wearable device provided in an embodiment of the present application;

[0058] FIG2A is a schematic diagram of an application of a blood pressure sensor provided in an embodiment of the present application;

[0059] FIG2B is a schematic diagram of another application of a blood pressure sensor provided in an embodiment of the present application;

[0060] FIG3A is a schematic diagram of a blood pressure sensor 103 provided in an embodiment of the present application in a non-operating state;

[0061] FIG3B is a schematic diagram of a blood pressure sensor 103 in a working state provided by an embodiment of the present application;

[0062] FIG3C is a schematic diagram of data processing provided by an embodiment of the present application;

[0063] FIG4 is a flow chart of a blood pressure measurement method provided in an embodiment of the present application;

[0064] FIG5 is a schematic structural diagram of a blood pressure measurement device provided in an embodiment of the present application;

[0065] FIG6 is a schematic structural diagram of another blood pressure measurement device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] The following describes the embodiments of the present application in conjunction with the accompanying drawings. The terms used in the implementation methods of the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application.

[0067] For ease of understanding, the following examples provide some explanations of concepts related to the embodiments of the present application for reference.

[0068] 1. Blood pressure

[0069] Blood pressure (BP) refers to the lateral pressure per unit area exerted on the lateral walls of blood vessels as blood flows through them. In other words, blood pressure in humans refers to the lateral pressure perpendicular to the vessel walls exerted by the pulsating blood flow. Peak pressure is systolic blood pressure (SBP), also known as high blood pressure; trough pressure is diastolic blood pressure (DBP), also known as low blood pressure. For an adult, for example, a normal systolic blood pressure should be greater than 90 mmHg (mmHg: blood pressure unit, millimeters of mercury) and less than 140 mmHg, while a diastolic blood pressure should be greater than 60 mmHg and less than 90 mmHg. Excessively high or low systolic or diastolic blood pressure can have adverse health effects. Due to differences in blood vessels, blood pressure can be categorized as arterial, venous, and capillary. When measuring blood pressure, arterial blood pressure is generally measured.

[0070] 2. Magnetic sensor

[0071] Magnetic sensors have a wide range of applications across various fields, one of which is vibration detection when used in conjunction with magnets. By attaching a magnet to a vibrating object, a magnetic sensor can record fluctuations in the magnetic field as the object moves. Vibrations caused by blood flow, often referred to as hemodynamic vibrations, are generated when blood encounters the dynamic forces of arteries and blood vessels as it flows through the circulatory system. The interaction between pulsating blood flow and the compliant arterial walls produces subtle but crucial vibrations that can convey valuable physiological information. Magnetic sensors are ideally suited to detecting these subtle vibrations, providing insights into the health of the cardiovascular system. In addition to detecting heartbeats, abnormalities in blood flow patterns or vascular elasticity can also result in distinct vibration patterns that can be detected and analyzed using specialized sensors and signal processing techniques.

[0072] 3. Mechanical vibration waves

[0073] The propagation of mechanical vibrations in a medium is called a mechanical wave. Mechanical waves and electromagnetic waves have both similarities and differences. Mechanical waves are generated by mechanical vibrations, while electromagnetic waves are generated by electromagnetic oscillations. The propagation of mechanical waves requires a specific medium, and the propagation speed in different media is also different. They cannot propagate in a vacuum at all, while electromagnetic waves (such as light waves) can propagate in a vacuum. Mechanical waves can be transverse waves and longitudinal waves, but electromagnetic waves can only be transverse waves. Many physical properties of mechanical waves and electromagnetic waves, such as refraction and reflection, are consistent, and the physical quantities that describe them are also the same. It can be understood that the pulse vibration in this scheme generates mechanical vibration waves.

[0074] The above exemplary description of the concepts can be applied in the following embodiments.

[0075] The following will describe in detail the system architecture of the embodiments of the present application in conjunction with the accompanying drawings.

[0076] Please refer to Figure 1A, which is a schematic diagram of a wearable device applicable to an embodiment of the present application.

[0077] An embodiment of the present application provides a wearable device 100 that can be used to measure blood pressure. As shown in FIG1A (a), the wearable device 100 can be a watch. The wearable device 100 can include a watch body 101, a watch strap 102, and a blood pressure sensor 103. The blood pressure sensor 103 can be attached to the side of the watch strap 102 that is closest to the pulse.

[0078] Specifically, when a user wears the wearable device 100 on their wrist as shown in FIG1A(b), the blood pressure sensor 103 can be located above an artery in the user's wrist. For example, as shown in FIG1A(c), the blood pressure sensor 103 can be located above the radial artery in the user's wrist.

[0079] As shown in FIG. 1B , the body 101 of the wearable device 100 may further include a signal processing unit 104 .

[0080] 1B , when the wearable device 100 is a watch, the blood pressure sensor 103 is attached to the body-friendly side of the wearable component (e.g., a strap 102). The side strap 102 can be located above an artery on the user's wrist, such as the radial artery.

[0081] FIG1C is a schematic structural diagram of the wearable device 100 provided in an embodiment of the present application.

[0082] The following embodiments are described in detail using the wearable device 100 as an example. It should be understood that the wearable device 100 may have more or fewer components than shown in the figure, may combine two or more components, or may have a different component configuration. The various components shown in the figure may be implemented in hardware, including one or more signal processing and / or application-specific integrated circuits, software, or a combination of hardware and software.

[0083] As shown in FIG1C , the wearable device can be a wearable device such as a bracelet, a watch, etc., and the wearable device 100 can also be a non-wearable device such as a wall-mounted blood pressure monitor. 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 only described by taking the wearable device 100 as a watch as an example.

[0084] The wearable device 100 may include: a blood pressure sensor 103, a signal processing unit 104, a sensor module 105, a wireless communication module 106A, a mobile communication module 106B, an internal memory 107, a display screen 108, a button 109, a motor 110, a USB interface 111, a power management module 112, a battery 113, a charging management module 114, and a SIM card interface 115. The sensor module 105 may include a touch sensor 105A, etc.

[0085] It is understood that the structure illustrated in the embodiments of the present invention does not constitute a specific limitation on the wearable device 100. In other embodiments of the present application, the wearable device 100 may include more or fewer components than shown, or may 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.

[0086] The signal processing unit 104 may be a microcontroller unit (MCU) or other units having a signal processing function, which is not limited in the embodiment of the present application.

[0087] The signal processing unit 104 may include one or more processing units. For example, the signal processing unit 104 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.

[0088] In some embodiments, the signal processing unit 104 may include one or more interfaces. The interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface.

[0089] The I2C interface is a bidirectional synchronous serial bus that includes a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the signal processing unit 104 may include multiple I2C bus lines. The signal processing unit 104 may be coupled to the touch sensor 105A, the power management module 112, and the like via different I2C bus interfaces. For example, the signal processing unit 104 may be coupled to the touch sensor 105A via the I2C interface, enabling communication between the signal processing unit 104 and the touch sensor 105A via the I2C bus interface, thereby implementing touch functionality for the wearable device.

[0090] The I2S interface can be used for audio communication. The PCM interface can also be used for audio communication to sample, quantize, and encode analog signals. The UART interface is a universal serial data bus used for asynchronous communication. This bus can be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, the UART interface is typically used to connect the signal processing unit 104 and the wireless communication module 106A. For example, the signal processing unit 104 communicates with the Bluetooth module in the wireless communication module 106A via the UART interface to implement Bluetooth functionality.

[0091] The MIPI interface can be used to connect the signal processing unit 104 to peripheral devices such as the display screen 108. MIPI interfaces include the camera serial interface (CSI) and the display serial interface (DSI). The signal processing unit 104 and the display screen 108 communicate via the DSI interface, enabling the display function of the wearable device.

[0092] The GPIO interface can be configured via software. It can be configured as either a control signal or a data signal. The USB interface 111 complies with USB standards and may be a Mini USB interface, Micro USB interface, or USB Type-C interface. The USB interface 111 can be used to connect a charger to charge the wearable device and can also be used to transfer data between the wearable device and peripheral devices.

[0093] It is understood that the interface connection relationship between the modules illustrated in the embodiments of the present invention is only a schematic illustration and does not constitute a structural limitation on the wearable device. In other embodiments of the present application, the wearable device may also adopt a different interface connection method from the above embodiments, or a combination of multiple interface connection methods.

[0094] In the embodiment of the present application, the signal processing unit 104 can be used to receive the magnetic field change data sent by the blood pressure sensor 103 and process the magnetic field change data to calculate the user's blood pressure value. Please refer to the following description for details, which will not be repeated here.

[0095] The charging management module 114 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 114 can receive charging input from the wired charger via the USB interface 111. In some wireless charging embodiments, the charging management module 114 can receive wireless charging input via the wearable device's wireless charging coil. While charging the battery 113, the charging management module 114 can also power the wearable device through the power management module 112.

[0096] The power management module 112 is used to connect the battery 113, the charging management module 114 and the signal processing unit 104. The power management module 112 receives input from the battery 113 and / or the charging management module 114 to power the circuit components in the wearable device 100. For example, the power management module 112 receives input from the battery 113 and / or the charging management module 114 and can power the signal processing unit 104, the internal memory 107, the display 108, and the wireless communication module 106A. The power management module 112 can also be used to monitor parameters such as battery capacity, battery cycle count, battery health status (leakage, impedance), etc. In some other embodiments, the power management module 112 can also be set in the signal processing unit 104. In other embodiments, the power management module 112 and the charging management module 114 can also be set in the same device.

[0097] The wireless communication function of the wearable device can be implemented through the wireless communication module 106A, the mobile communication module 106B, the modem processor and the baseband processor.

[0098] The wireless communication module 106A can provide wireless communication solutions for wearable devices, 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 (IR), etc. The wireless communication module 106A can be one or more devices that integrate at least one communication processing module. The wireless communication module 106A receives electromagnetic waves via an antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the signal processing unit 104. The wireless communication module 106A can also receive the signal to be sent from the signal processing unit 104, frequency modulate it, amplify it, and convert it into electromagnetic waves for radiation through the antenna.

[0099] The mobile communication module 106B can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc., applied to wearable devices. The mobile communication module 106B may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 106B 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 106B can be set in the signal processing unit 104. In some embodiments, at least some of the functional modules of the mobile communication module 106B can be set in the same device as at least some of the modules of the signal processing unit 104.

[0100] In the embodiment of the present application, the wearable device 100 can upload the blood pressure measurement results of the wearable device 100 to a cloud server or send them to other devices through the wireless communication module 106A or the mobile communication module 106B. Alternatively, the wearable device 100 can receive the user's historical blood pressure measurement results sent by other devices of the user through the wireless communication module 106A or the mobile communication module 106B.

[0101] Keys 109 include a power button, a volume button, and the like. Keys 109 may be mechanical keys or touch-sensitive keys. The wearable device may receive key inputs and generate key signal inputs related to user settings and function control of the wearable device.

[0102] Display screen 108 is used to display images, videos, etc. Display screen 108 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 108, where N is a positive integer greater than 1.

[0103] In the embodiment of the present application, the display screen 108 can be used to display the user's blood pressure measurement results.

[0104] Motor 110 can generate vibration alerts. Motor 110 can be used for incoming call vibration alerts and for touch vibration feedback. For example, touch operations applied to different applications (e.g., taking a photo, playing audio, etc.) can correspond to different vibration feedback effects. Motor 110 can also generate different vibration feedback effects for touch operations applied to different areas of display screen 108.

[0105] The internal memory 107 may include one or more random access memories (RAM) and one or more non-volatile memories (NVM).

[0106] Random access memory may include static random-access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM, for example, the fifth generation of DDR SDRAM is generally referred to as DDR5 SDRAM), etc.

[0107] Non-volatile memory may include disk storage devices and flash memory. Flash memory may include NOR FLASH, NAND FLASH, 3D NAND FLASH, etc. according to the operating principle. It may include single-level cell (SLC), multi-level cell (MLC), triple-level cell (TLC), quad-level cell (QLC), etc. according to the storage cell potential level. It may include universal flash storage (UFS), embedded multi-media card (eMMC), etc. according to the storage specification. Random access memory can be directly read and written by the signal processing unit 104, and can be used to store executable programs (such as machine instructions) of operating systems or other running programs, and can also be used to store user and application data, etc. The non-volatile memory can also store executable programs and store user and application data, etc., and can be loaded into the random access memory in advance for direct reading and writing by the signal processing unit 104.

[0108] In the embodiment of the present application, the internal memory 107 can be used to store the blood pressure value of the user calculated by the signal processing unit 104.

[0109] The SIM card interface 115 is used to connect a SIM card. The SIM card can be connected to or separated from the wearable device by inserting it into or removing it from the SIM card interface 115. The wearable device can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 115 can support Nano SIM cards, Micro SIM cards, SIM cards, etc. Multiple cards can be inserted into the same SIM card interface 115 at the same time. The types of the multiple cards can be the same or different. The SIM card interface 115 can also be compatible with different types of SIM cards. The SIM card interface 115 can also be compatible with external memory cards. The wearable device interacts with the network through the SIM card to achieve 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.

[0110] In some embodiments, the wearable device 100 may not include the SIM card interface 115 .

[0111] Touch sensor 105A, also known as a "touch-sensitive device," can be disposed on display screen 108. Touch sensor 105A and display screen 108 form a touch screen, also known as a "touchscreen." Touch sensor 105A is configured to detect touch operations applied thereto or in the vicinity thereof. The touch sensor can transmit the detected touch operations to an application processor to determine the type of touch event. Visual output related to the touch operations can be provided via display screen 108. In other embodiments, touch sensor 105A can also be disposed on the surface of the wearable device, at a location different from that of display screen 108.

[0112] Optionally, the wearable device 100 may further include a photoplethysmography (PPG) sensor. The wearable device 100 may obtain the user's health data based on the PPG signal collected by the PPG sensor. The user's health data may include, but is not limited to, heart rate, blood oxygen, respiratory rate, and blood oxygen saturation (SpO2).

[0113] The examples shown in Figures 1A to 1C above are introduced using the integrated design of the blood pressure sensor as an example. Alternatively, please refer to Figure 1D, which is a schematic diagram of another wearable device applicable to the embodiment of the present application. The wearable device 120 may include a watch body 121, a watch strap 122, and a blood pressure sensor, wherein the magnetic sensor 123 in the blood pressure sensor is located on the watch strap 122, and the magnetic source 124 is located on the watch body 121. It can be understood that a buffer is provided between the magnetic source 124 and the skin (for details, please refer to the following description, which will not be repeated here).

[0114] For another example, see Figure 1E, which is a schematic diagram of another wearable device applicable to an embodiment of the present application. The wearable device 140 may include a watch body 141, a watch strap 142, and a blood pressure sensor, wherein the magnetic source 143 in the blood pressure sensor is located on the watch strap 142, and the magnetic sensor 144 in the blood pressure sensor is located on the watch body 141. It is understood that a buffer is provided between the magnetic sensor 144 and the skin (for details, please refer to the following description and will not be repeated here).

[0115] For the introduction of FIG. 1D and FIG. 1E , please refer to the introduction of FIG. 1A to FIG. 1C , which will not be repeated here.

[0116] The following describes the blood pressure sensor 103 provided in the embodiment of the present application. It is understood that the blood pressure sensor described below is also applicable to FIG1D and FIG1E .

[0117] Please refer to FIG2A , which is a schematic diagram of an application of a blood pressure sensor 103 provided in an embodiment of the present application. As shown in FIG2A , the blood pressure sensor 103 includes a magnetic source 1031 and a magnetic sensor 1032 .

[0118] In a possible implementation, the magnetic source 1031 may be at least one of a permanent magnet and an electromagnet. Exemplarily, the magnetic source strength may range from 1 to 2000 Gauss.

[0119] In one possible implementation, the magnetic sensor 1032 may be a magnetoresistive sensor. Exemplarily, the magnetoresistive sensor may be at least one of the following: anisotropy magnetoresistive (AMR), giant magnetoresistive (GMR), or tunnel magnetoresistive (TMR).

[0120] The magnetic source 1031 and the magnetic sensor 1032 are spaced apart by a preset distance. For example, the preset distance may be between 1 mm and 10 cm. This ensures that the magnetic field changes caused by the pulse vibration can be effectively collected.

[0121] A buffer 1033 is provided between the magnetic sensor 1032 and the skin. The buffer 1033 is used to reduce the vibration of the magnetic sensor 1032 when the artery vibrates.

[0122] It is understandable that the skin can be human skin or animal skin.

[0123] In one possible implementation, the buffer 1033 may be a sponge or foam plastic. The size of the buffer 1033 is not limited in this solution. Alternatively, the buffer 1033 may be slightly larger than the magnetic sensor 1032. This allows for better buffering.

[0124] The magnetic source 1031 is attached to the skin. Alternatively, a hard object is placed between the magnetic source 1031 and the skin. It is understood that the hard object serves to conduct the mechanical vibration waves generated by the pulse. In other words, the hard object does not affect the effect of the magnetic source 1031 vibrating with the artery. For example, the hard object can be hard plastic or other non-magnetic materials.

[0125] It is understandable that a hard object may be provided between the magnetic sensor 1032 and the buffer 1033 , and this solution does not impose any limitation on this.

[0126] Arterial vibrations generate mechanical waves of pulse vibrations on the body's surface. These mechanical waves cause relative motion (e.g., relative displacement) between the magnetic source and the magnetic sensor, leading to changes in the relative magnetic field strength. The magnetic sensor collects data on these changes, which can then be used to generate blood pressure data.

[0127] That is, the magnetic sensor 1032 is used to collect magnetic field change data, and the magnetic field change data is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source 1031 and the magnetic sensor 1032 caused by the arterial vibration.

[0128] Exemplarily, a user wears the wearable device 100 shown in Figures 1A to 1E on the wrist, wherein the wearable device 100 includes a blood pressure sensor 103 as shown in Figure 2A. The magnetic source 1031 in the blood pressure sensor 103 is attached to the user's skin. For example, the magnetic source 1031 is located at the pulse. Based on the pulse vibration, the magnetic source 1031 in the blood pressure sensor 103 vibrates. At the same time, since a buffer 1033 is provided between the magnetic sensor 1032 and the skin, the magnetic sensor 1032 does not vibrate or the vibration amplitude is small. Due to the relative displacement between the magnetic source 1031 and the magnetic sensor 1032, a magnetic field change is generated. Based on the magnetic field change, the magnetic sensor 1032 then collects magnetic field change data.

[0129] Figures 3A and 3B are schematic diagrams of a blood pressure sensor 103 provided by an embodiment of the present application in its inoperative and operational states, respectively. Referring to Figure 3A , when the blood pressure sensor is in its inoperative state (e.g., there is no relative displacement between the magnetic source and the magnetic sensor), the position difference z1 between the magnetic source and the magnetic sensor in the z direction (i.e., the pulse direction) is fixed. z1 = g1 - t1, where g1 is the distance between the top surface of the magnetic sensor and the skin in the inoperative state; t1 is the distance between the top surface of the magnetic source and the skin in the inoperative state.

[0130] Referring to Figure 3B , when the blood pressure sensor is in operation (the magnetic source vibrates along with the user's pulse), the z-direction position difference z2 between the magnetic source and the magnetic sensor is not equal to z1. Here, z2 = g2 - t2. Here, g2 is the distance between the upper surface of the magnetic sensor and the skin during operation; t2 is the distance between the upper surface of the magnetic source and the skin during operation. Because a buffer is provided between the magnetic sensor and the skin, g2 equals g1. In other words, z2 = g1 - t2. Therefore, z2 is either less than z1 or greater than z1.

[0131] Based on the relative displacement between the magnetic source 1031 and the magnetic sensor 1032 , the magnetic sensor 1032 can collect magnetic field change data.

[0132] In one possible implementation, the number of magnetic sources 1031 can be at least one. For example, the number of magnetic sources 1031 can be multiple. For example, the multiple magnetic sources 1031 can be arranged in an array. Based on this design, the magnetic sources can better cover the arterial area, thus resolving practical issues such as difficulty in covering thin pulses and difficulty in aligning the artery.

[0133] In one possible implementation, the number of magnetic sensors 1032 may be at least one. For example, the number of magnetic sensors 1032 may be multiple. For example, the multiple magnetic sensors 1032 may be arranged in an array or other arrangement. Based on this design, the accuracy of the collected magnetic field change data can be improved, and the accuracy of blood pressure data measurement can be improved.

[0134] In one possible implementation, the magnetic source 1031 and the magnetic sensor 1032 are encapsulated together with a soft magnetic material. This is done to isolate interference caused by external magnetic fields. It is understood that the magnetic source 1031, the magnetic sensor 1032, and the buffer 1033 are all integrally encapsulated.

[0135] In another possible implementation, the magnetic source 1031 and the magnetic sensor 1032 may be separate. For example, the magnetic source may be placed in the watch body, and the magnetic sensor may be placed in the watch strap. Alternatively, the magnetic source may be placed in the watch strap, and the magnetic sensor may be placed in the watch body, etc. Of course, other configurations are possible, and this solution does not limit them.

[0136] An embodiment of the present application provides a blood pressure sensor comprising a magnetic source, a magnetic sensor, and a buffer disposed between the magnetic sensor and the skin. The buffer is used to reduce the vibration of the magnetic sensor when the artery vibrates, and the magnetic sensor is used to collect magnetic field change data, which is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the above-mentioned arterial vibration. In this way, based on the provision of the buffer, it can be ensured that only one of the magnetic source and the magnetic sensor is vibrating, and relatively accurate magnetic field change data can be collected based on the relative displacement between the magnetic source and the magnetic sensor, which helps to generate accurate blood pressure data. Moreover, this solution does not require the user to perform any additional operations, thereby improving the user's convenience and comfort.

[0137] Please refer to FIG2B , which is a schematic diagram of another application of a blood pressure sensor 103 provided in an embodiment of the present application. As shown in FIG2B , the blood pressure sensor 103 includes a magnetic source 1034 and a magnetic sensor 1035 .

[0138] In a possible implementation, the magnetic source 1034 may be at least one of a permanent magnet and an electromagnet.

[0139] In a possible implementation, the magnetic sensor 1035 may be a magnetoresistive sensor. Exemplarily, the magnetoresistive sensor may be at least one of the following: anisotropic magnetoresistive (AMR), giant magnetoresistive (GMR), and tunnel magnetoresistive (TMR).

[0140] The magnetic source 1034 and the magnetic sensor 1035 are spaced apart by a preset distance. For example, the preset distance may be between 1 mm and 10 cm. This ensures that the magnetic field changes caused by the pulse vibration can be effectively collected.

[0141] A buffer 1036 is provided between the magnetic source 1034 and the skin. The buffer 1036 is used to reduce the vibration of the magnetic source 1034 when the artery vibrates.

[0142] It is understandable that the skin can be human skin or animal skin.

[0143] In one possible implementation, the buffer 1036 may be a sponge or foam plastic. The size of the buffer 1036 is not limited in this embodiment. Alternatively, the buffer 1036 may be slightly larger than the magnetic source 1034. This allows for better buffering.

[0144] The magnetic sensor 1035 is attached to the skin. Alternatively, a hard object is placed between the magnetic sensor 1035 and the skin. It is understood that the hard object serves to conduct the mechanical vibration waves. In other words, the hard object does not affect the effect of the magnetic sensor 1035 vibrating with the artery. For example, the hard object can be hard plastic or other non-magnetic materials.

[0145] It is understandable that a hard object may be provided between the magnetic source 1034 and the buffer 1036 , and this solution does not impose any limitation on this.

[0146] Arterial vibrations generate mechanical waves of pulse vibrations on the body's surface. These mechanical waves cause relative motion (e.g., relative displacement) between the magnetic source and the magnetic sensor, leading to changes in the relative magnetic field strength. The magnetic sensor collects data on these changes, which can then be used to generate blood pressure data.

[0147] That is, the magnetic sensor 1035 is used to collect magnetic field change data, and the magnetic field change data is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source 1034 and the magnetic sensor 1035 caused by the arterial vibration.

[0148] Exemplarily, a user wears the wearable device 100 shown in Figures 1A to 1E on the wrist, wherein the wearable device includes a blood pressure sensor 103 as shown in Figure 2B. The magnetic sensor 1035 in the blood pressure sensor 103 is attached to the user's skin. For example, the magnetic sensor 1035 is located at the pulse. Based on the pulse vibration, the magnetic sensor 1035 in the blood pressure sensor 103 vibrates accordingly. At the same time, since a buffer 1036 is provided between the magnetic source 1034 and the skin, the magnetic source 1034 does not vibrate or the vibration amplitude is small. Due to the relative displacement between the magnetic source 1034 and the magnetic sensor 1035, a magnetic field change is generated. Based on the magnetic field change, the magnetic sensor 1035 then collects magnetic field change data.

[0149] In one possible implementation, the number of magnetic sensors 1035 can be at least one. For example, the number of magnetic sensors 1035 can be multiple, with the multiple magnetic sensors 1035 arranged in an array. This design ensures better coverage of the arterial region, resolving practical issues such as difficulty in covering thin pulses and difficulty aligning arteries. It also improves the accuracy of collected magnetic field change data and improves the accuracy of blood pressure measurements.

[0150] In a possible implementation, there may be at least one magnetic source 1034. For example, there may be multiple magnetic sources 1034. For example, the multiple magnetic sources 1034 are arranged in an array.

[0151] In one possible implementation, the magnetic source 1034 and the magnetic sensor 1035 are encapsulated together with a soft magnetic material. This is done to isolate interference from external magnetic fields. It is understood that the magnetic source 1034, the magnetic sensor 1035, and the buffer 1036 are all integrally packaged.

[0152] In another possible implementation, the magnetic source 1034 and the magnetic sensor 1035 can be separate. For example, the magnetic source can be placed in the watch body, and the magnetic sensor can be placed in the watch strap. Alternatively, the magnetic source can be placed in the watch strap, and the magnetic sensor can be placed in the watch body, etc. Of course, other configurations are possible, and this solution does not limit them.

[0153] An embodiment of the present application provides a blood pressure sensor comprising a magnetic source, a magnetic sensor, and a buffer disposed between the magnetic source and the skin. The buffer is used to reduce the vibration of the magnetic source when the artery vibrates, and the magnetic sensor is used to collect magnetic field change data, which is used to generate blood pressure data. The magnetic field change is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the above-mentioned arterial vibration. In this way, based on the provision of the buffer, it can be ensured that only one of the magnetic source and the magnetic sensor is vibrating, and relatively accurate magnetic field change data can be collected based on the relative displacement between the magnetic source and the magnetic sensor, which helps to generate accurate blood pressure data. Moreover, this solution does not require the user to perform any additional operations, thereby improving the user's convenience and comfort.

[0154] It should be noted that the embodiments of this application are described using pulse-based blood pressure measurement as an example. It is understood that measurements can also be performed based on the carotid artery in the neck, the abdominal artery, the facial artery, etc. The embodiments of this application are described using a watch as an example wearable device, but it can also be in other forms such as glasses. This solution does not limit the measurement location or the specific form of the corresponding wearable device.

[0155] The above examples introduce two blood pressure sensors provided by this application. The following describes how an embodiment of this application generates blood pressure data based on magnetic field change data.

[0156] In a first possible implementation, the wearable device includes a blood pressure sensor and a signal processing unit configured to calculate blood pressure data based on the magnetic field change data.

[0157] Exemplarily, the signal processing unit may be, for example, a central processing unit (CPU), a neural processing unit (NPU), etc., wherein the signal processing unit performs medical model algorithm or neural network algorithm processing based on the magnetic field change data. Exemplarily, for the medical model algorithm, for example, based on the magnetic field change data output by the blood pressure sensor, the pulse transit time (PTT) feature is extracted, and then the blood pressure data is inferred based on the correlation between the pulse transit time and the blood pressure. For another example, for the neural network algorithm, for example, a sequential model is used to process the magnetic field change data output by the blood pressure sensor, and the blood pressure data is inferred based on regression.

[0158] As shown in Figure 3C, a data processing diagram provided in an embodiment of the present application is provided. In this example, the wearable device includes a blood pressure sensor, an amplifier, a filter, a digital-to-analog converter, and a signal processing unit. The amplifier is used to power amplify the magnetic field change data output by the blood pressure sensor. The filter is used to filter the noise of the output of the amplifier. The digital-to-analog converter is used to convert the digital information output by the filter into an analog signal. Furthermore, the signal processing unit processes the above output using a medical model algorithm or a neural network algorithm. For the introduction of this part, please refer to the above description and will not be repeated here.

[0159] Then, the wearable device displays the blood pressure data on the display screen. In other words, the blood pressure data in this example is calculated by the wearable device.

[0160] In a second possible implementation, the wearable device wirelessly communicates with another device. The wearable device can transmit the magnetic field change data to the other device, which then calculates the blood pressure data. The wearable device then receives the blood pressure data from the other device. The other device can be, for example, a mobile phone, computer, server, or other wearable device, and this solution does not limit this.

[0161] That is to say, the blood pressure data in this example is calculated by other devices.

[0162] This solution is based on the precise detection of the mechanical vibration waves of the body surface pulse, and is applied to blood pressure estimation based on the collected magnetic field change data, thereby improving the accuracy of blood pressure measurement.

[0163] The wearable device and blood pressure sensor according to the embodiments of the present application are described above. The method according to the embodiments of the present application is described in detail below.

[0164] Referring to Figure 4, it is a flow chart of a blood pressure measurement method provided by an embodiment of the present application. Optionally, the method can be applied to the aforementioned wearable device, such as the wearable device shown in Figure 1A or Figure 1D or Figure 1E. The blood pressure measurement method shown in Figure 4 may include steps 401-402. It should be understood that this application is described in the order of 401-402 for the convenience of description, and is not intended to be limited to execution in the above order. The embodiment of the present application does not limit the order of execution, execution time, number of executions, etc. of the above one or more steps. The following description takes the execution subject of steps 401-402 of the blood pressure measurement method as a wearable device as an example, and this application is also applicable to other execution subjects. Steps 401-402 are as follows:

[0165] 401. Collect magnetic field change data, where the magnetic field change is generated based on relative displacement caused by arterial vibration.

[0166] For example, the relative displacement may be the displacement between the magnetic source and the magnetic sensor in the aforementioned embodiment, or may be the relative displacement between other units, which is not limited in this solution.

[0167] In a possible implementation, the magnetic field change data is collected based on the aforementioned blood pressure sensor. For the introduction of this part, please refer to the description of the embodiment shown in Figures 2A and 2B above, and no further details will be given here.

[0168] 402. Generate blood pressure data based on the magnetic field change data.

[0169] For example, the wearable device can obtain blood pressure data by processing the magnetic field change data using a medical model algorithm or a neural network algorithm. For the introduction of this part, please refer to the description of the embodiment shown in Figure 3C above, and will not be repeated here.

[0170] In an embodiment of the present application, blood pressure data is generated based on the magnetic field variation data generated by the relative displacement caused by arterial vibration. This example can collect relatively accurate magnetic field variation data based on the relative displacement caused by arterial vibration, which helps generate accurate blood pressure data.

[0171] It should be noted that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0172] The above describes in detail the method of the embodiment of the present application, and the following provides the device of the embodiment of the present application. It will be understood that in the various device embodiments of the present application, the division of multiple units or modules is only a logical division based on function, and is not intended to limit the specific structure of the device. In a specific implementation, some functional modules may be subdivided into more small functional modules, and some functional modules may be combined into one functional module, but no matter whether these functional modules are subdivided or combined, the general process performed by the device is the same. For example, some devices include a receiving unit and a sending unit. In some designs, the sending unit and the receiving unit can also be integrated into a communication unit, which can implement the functions implemented by the receiving unit and the sending unit. Typically, each unit corresponds to its own program code (or program instructions), and when the program code corresponding to each of these units runs on the processor, the unit is controlled by the processing unit to execute the corresponding process to implement the corresponding function.

[0173] An embodiment of the present application also provides an apparatus for implementing any of the above methods. For example, a blood pressure measurement apparatus is provided that includes modules (or means) for implementing each step performed by a wearable device in any of the above methods.

[0174] For example, referring to Figure 5 , which is a schematic diagram of the structure of a blood pressure measurement device provided in an embodiment of the present application, the blood pressure measurement device is used to implement the aforementioned blood pressure measurement method, such as the blood pressure measurement method shown in Figure 4 .

[0175] As shown in FIG5 , the apparatus may include an acquisition module 501 and a processing module 502 , specifically as follows:

[0176] The acquisition module 501 is used to collect magnetic field change data, where the magnetic field change is generated based on the relative displacement caused by arterial vibration.

[0177] The processing module 502 is configured to generate blood pressure data based on the magnetic field change data.

[0178] The introduction of the above modules can be found in the description of the aforementioned embodiments and will not be repeated here.

[0179] It should be understood that the division of the modules in the above-mentioned devices is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a single physical entity, or they may be physically separated. Furthermore, the modules in the blood pressure measurement device may be implemented in the form of a processor calling software; for example, the blood pressure measurement device includes a processor connected to a memory storing instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or the functions of the modules of the device. The processor may be, for example, a general-purpose processor such as a central processing unit (CPU) or a microprocessor, and the memory may be internal or external to the device. Alternatively, the modules in the device can be implemented in the form of hardware circuits, and the functions of some or all units can be realized by designing the hardware circuits. The hardware circuit can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units by designing the logical relationship of the components in the circuit. For another example, in another implementation, the hardware circuit can be implemented by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units. All modules of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0180] FIG6 is a schematic diagram illustrating the hardware structure of another blood pressure measurement device provided in an embodiment of the present application. The blood pressure measurement device 600 shown in FIG6 (which may be a computer device) includes a memory 601, a processor 602, a communication interface 603, and a bus 604. The memory 601, processor 602, and communication interface 603 are interconnected via bus 604.

[0181] The memory 601 may be a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM).

[0182] The memory 601 can store programs. When the program stored in the memory 601 is executed by the processor 602, the processor 602 and the communication interface 603 are used to perform the various steps of the blood pressure measurement method of the embodiment of the present application.

[0183] The processor 602 is a circuit with signal processing capabilities. In one implementation, the processor 602 can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor 602 can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor 602 is a hardware circuit implemented by an ASIC or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration file and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc. The processor 602 is used to execute relevant programs to implement the functions required to be performed by the units in the blood pressure measurement device of the embodiment of the present application, or to execute the blood pressure measurement method of the method embodiment of the present application.

[0184] It can be seen that each module in the above device can be one or more processors (or processing circuits) configured to implement the above method, such as: CPU, GPU, NPU, TPU, DPU, microprocessor, DSP, ASIC, FPGA, or a combination of at least two of these processor forms.

[0185] In addition, the modules in the above device can be fully or partially integrated together, or can be implemented independently. In one implementation, these modules are integrated together and implemented in the form of a system-on-a-chip (SOC). The SOC may include at least one processor for implementing any of the above methods or implementing the functions of the modules of the device. The type of the at least one processor can be different, for example, including a CPU and FPGA, a CPU and an artificial intelligence processor, a CPU and a GPU, etc.

[0186] The communication interface 603 uses a transceiver device such as, but not limited to, a transceiver to implement communication between the apparatus 600 and other devices or a communication network. For example, data can be obtained through the communication interface 603 .

[0187] The bus 604 may include a path for transmitting information between various components of the device 600 (eg, the memory 601 , the processor 602 , and the communication interface 603 ).

[0188] It should be noted that although the device 600 shown in FIG6 only shows a memory, a processor, and a communication interface, during the specific implementation process, those skilled in the art will understand that the device 600 also includes other components necessary for normal operation. At the same time, according to specific needs, those skilled in the art will understand that the device 600 may also include hardware components that implement other additional functions. In addition, those skilled in the art will understand that the device 600 may also include only the components necessary to implement the embodiments of the present application, and does not necessarily include all the components shown in FIG6.

[0189] An embodiment of the present application also provides a computer-readable storage medium, which stores instructions. When the computer-readable storage medium is executed on a computer or a processor, the computer or processor executes one or more steps in any of the above methods.

[0190] The present application also provides a computer program product comprising instructions, which, when executed on a computer or processor, causes the computer or processor to execute one or more steps in any of the above methods.

[0191] It should be understood that in the description of this application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can mean A or B; where A and B can be singular or plural. Also, in the description of this application, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural. In addition, to facilitate the clear description of the technical solutions of the embodiments of this application, in the embodiments of this application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity or execution order, and words such as "first" and "second" do not necessarily mean different. At the same time, in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0192] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The mutual coupling, direct coupling, or communication connection shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, and can be electrical, mechanical or other forms.

[0193] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0194] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted via the computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic medium such as a floppy disk, a hard disk, a tape, a magnetic disk, or an optical medium such as a digital versatile disc (DVD), or a semiconductor medium such as a solid state disk (SSD).

[0195] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A blood pressure sensor, characterized in that, Comprising a magnetic source and a magnetic sensor, wherein, A buffer is provided between the magnetic sensor and the skin, and the buffer is configured to attenuate the vibration of the magnetic sensor when the artery vibrates; alternatively, a buffer is provided between the magnetic source and the skin, and the buffer is configured to attenuate the vibration of the magnetic source when the artery vibrates; The magnetic sensor is configured to collect magnetic field change data, and the magnetic field change data is used to generate blood pressure data, and the magnetic field change is generated based on the relative displacement between the magnetic source and the magnetic sensor caused by the artery vibration.

2. The sensor according to claim 1, wherein The buffer is sponge or foam plastic.

3. The sensor according to claim 1 or 2, characterized in that, The magnetic source is a permanent magnet or an electromagnet.

4. The sensor according to any one of claims 1 to 3, characterized in that The magnetic sensor is a magnetoresistive sensor.

5. The sensor according to any one of claims 1 to 4, characterized in that The number of the magnetic sources is multiple, and the multiple magnetic sources are arranged in an array.

6. The sensor according to any one of claims 1 to 5, characterized in that, The number of the magnetic sensors is multiple, and the multiple magnetic sensors are arranged in an array.

7. The sensor according to any one of claims 1 to 6, characterized in that, The magnetic source and the magnetic sensor are encapsulated together by a soft magnetic material.

8. A wearable device, characterized in that, Comprising the blood pressure sensor according to any one of claims 1 to 7.

9. The wearable device according to claim 8, wherein The wearable device comprises a watch body and a watch band, the magnetic sensor in the blood pressure sensor is located in the watch body, the magnetic source in the blood pressure sensor is located in the watch band, or the magnetic source is located in the watch body and the magnetic sensor is located in the watch band.

10. A blood pressure measurement method, characterized in that, Comprising: Collecting magnetic field change data, the magnetic field change being generated based on the relative displacement caused by artery vibration; Generating blood pressure data based on the magnetic field change data.

11. A blood pressure measurement device, characterized in that, Comprising: A processor, the processor being coupled to a memory, and the processor is configured to call computer program instructions stored in the memory to execute the method according to claim 10.

12. A computer-readable storage medium, characterized in that, Instructions are stored on the computer-readable storage medium, and when the instructions are run on a computer, the computer is caused to execute the method according to claim 10.

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