Blood pressure sensor, wearable device and blood pressure measuring method

Abstract

The embodiment of the invention provides a blood pressure sensor, wearable equipment and a blood pressure measuring method.The blood pressure sensor comprises a magnetic source and a magnetic sensor, a buffer is arranged between the magnetic sensor and the skin, and the buffer is 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 the buffer is used for weakening the vibration of the magnetic source when the 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 on the basis of relative displacement between the magnetic source and the magnetic sensor caused by the arterial vibration. By adopting the means, accurate blood pressure data can be generated. In addition, according to the scheme, the user does not need to have other additional operation, and convenience and comfort of the user are improved.

Description

Technical Field

[0001] This application relates to the technical field of blood pressure measurement, and particularly to a blood pressure sensor, a wearable device, and a blood pressure measurement method. Background Art

[0002] With the aging of the population, cardiovascular health has received increasing attention. Currently, smart wearable devices for blood pressure measurement measure blood pressure by means of an internally installed micro airbag. For example, Omron measures blood pressure based on the oscillometric method. However, the user experience is not comfortable during the airbag pressurization process of this device. Summary of the Invention

[0003] 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 at the same time improve the user experience.

[0004] In a first aspect, an embodiment of this application provides a blood pressure sensor, including a magnetic source and a magnetic sensor. Among them, a buffer is provided between the magnetic sensor and the skin, and the buffer is used to weaken the vibration of the magnetic sensor when the artery vibrates. The magnetic sensor is used to collect magnetic field change data. 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 and the magnetic sensor caused by the above-mentioned artery vibration.

[0005] An embodiment of this application provides a blood pressure sensor including a magnetic source, a magnetic sensor, and a buffer provided between the magnetic sensor and the skin. Among them, the buffer is used to weaken the vibration of the magnetic sensor when the artery vibrates, the magnetic sensor is used to collect magnetic field change data, 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 above-mentioned artery vibration. By doing so, based on the setting of the buffer, it can be ensured that only the magnetic source vibrates in the magnetic source and the magnetic sensor. Furthermore, 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 other additional operations by the user, improving the convenience and comfort of the user.

[0006] It can be understood that the skin can be human skin or animal skin.

[0007] In a possible implementation manner, the buffer is sponge or foam plastic.

[0008] This example can help weaken the vibration of the magnetic sensor or the magnetic source, and thus can improve the accuracy of blood pressure measurement.

[0009] Optionally, the size of the buffer can be slightly larger than the magnetic sensor or the magnetic source located thereon. In this way, the purpose of buffering can be better achieved.

[0010] In a possible implementation, the magnetic source is a permanent magnet or an electromagnet.

[0011] In a possible implementation, the magnetic sensor is a magnetoresistive sensor.

[0012] Exemplarily, the magnetoresistive sensor can be at least one of the following: anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), and tunnel magnetoresistance (TMR).

[0013] In a possible implementation, the magnetic source is attached to the skin. Alternatively, a hard object is provided between the magnetic source and the skin. It can be understood that the function of the hard object is to conduct mechanical vibration waves. That is to say, the hard object does not affect the effect of the magnetic source vibrating with the artery. For example, the hard object can be hard plastic or other non-magnetic materials, etc.

[0014] In a possible implementation, a preset distance is set between the magnetic source and the magnetic sensor. For example, the preset distance can be between 1 mm and 10 cm. In this way, it can be ensured that the magnetic field changes caused by pulse vibration can be effectively collected.

[0015] In a possible implementation, the number of the magnetic sources is multiple, and the multiple magnetic sources are arranged in an array.

[0016] Based on this example, it can be ensured that the magnetic source can better cover the artery area, which can solve problems such as thin pulse, difficult to cover, and difficult to align with the artery during actual use.

[0017] In a possible implementation, the number of the magnetic sensors can be multiple. For example, the multiple magnetic sensors are arranged in an array or other arrangements, etc.

[0018] 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 also be improved.

[0019] In a possible implementation, the magnetic source and the magnetic sensor are encapsulated together by a soft magnetic material.

[0020] This is done to isolate the possible interference caused by the external magnetic field. It can be understood that the magnetic source, the magnetic sensor, and the buffer are encapsulated integrally.

[0021] 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.

[0022] In a second aspect, an embodiment of the present application provides another blood pressure sensor, including a magnetic source and a magnetic sensor. Among them, a buffer is provided between the magnetic source and the skin, and the buffer is used to weaken the vibration of the magnetic source when the artery vibrates. The magnetic sensor is used to collect magnetic field change data. 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 and the magnetic sensor caused by the above-mentioned artery vibration.

[0023] An embodiment of the present application provides a blood pressure sensor including a magnetic source, a magnetic sensor, and a buffer provided between the magnetic source and the skin. Among them, the buffer is used to weaken the vibration of the magnetic source when the artery vibrates, the magnetic sensor is used to collect magnetic field change data, 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 above-mentioned artery vibration. By doing so, based on the setting of the buffer, it can be ensured that only the magnetic sensor vibrates in the magnetic source and the magnetic sensor, and then 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 other additional operations by the user, improving the convenience and comfort of the user.

[0024] It can be understood that the skin can be human skin or animal skin.

[0025] In a possible implementation manner, the buffer is sponge or foam plastic.

[0026] This example can help weaken the vibration of the magnetic sensor or the magnetic source, and then improve the accuracy of blood pressure measurement.

[0027] Optionally, the size of the buffer can be slightly larger than the magnetic sensor or the magnetic source located thereon. In this way, the purpose of buffering can be better achieved.

[0028] In a possible implementation manner, the magnetic source is a permanent magnet or an electromagnet.

[0029] In a possible implementation manner, the magnetic sensor is a magnetoresistive sensor.

[0030] Exemplarily, the magnetoresistive sensor can be at least one of the following: anisotropic magnetoresistance AMR, giant magnetoresistance GMR, and tunneling magnetoresistance TMR.

[0031] In a possible implementation manner, the magnetic sensor is attached to the skin. Alternatively, a hard object is provided between the magnetic sensor and the skin. It can be understood that the role of the hard object is to conduct mechanical vibration waves. That is to say, the hard object does not affect the effect of the magnetic sensor vibrating with the artery. For example, the hard object can be hard plastic or other non-magnetic materials.

[0032] In a possible implementation, a preset distance is provided between the magnetic source and the magnetic sensor. For example, the preset distance can be between 1 mm and 10 cm. In this way, it is possible to ensure that the magnetic field changes caused by pulse vibration can be effectively collected.

[0033] In a possible implementation, the number of the magnetic sensors is multiple, and the multiple magnetic sensors are arranged in an array.

[0034] Based on this design, it can be ensured that the arterial region can be better covered, which can solve problems such as the pulse being thin, difficult to cover, and difficult to align with the artery during actual use. Moreover, it can improve the accuracy of the collected magnetic field change data and the accuracy of blood pressure data measurement.

[0035] In a possible implementation, the number of the magnetic sources can be multiple.

[0036] In a possible implementation, the magnetic source and the magnetic sensor are encapsulated together by a soft magnetic material.

[0037] This is done to isolate the possible interference caused by external magnetic fields. It can be understood that the magnetic source, the magnetic sensor, and the buffer are all encapsulated integrally.

[0038] 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.

[0039] In a third aspect, an embodiment of the present application provides a wearable device, including a blood pressure sensor provided in any possible implementation manner of the first aspect or any possible implementation manner of the second aspect.

[0040] In a possible implementation, the wearable device includes a body and a strap. The magnetic sensor in the blood pressure sensor is located on the body, and the magnetic source in the blood pressure sensor is located on the strap, or the magnetic source is located on the body and the magnetic sensor is located on the strap.

[0041] In a possible implementation, the wearable device can be glasses. The glasses include a first part and a second part. The magnetic sensor in the blood pressure sensor is located on the first part, and the magnetic source in the blood pressure sensor is located on the second part. For example, the first part is the frame and the second part is the temple; of course, the first part can also be the temple and the second part can be the frame, etc.; or the first part or the second part can also be the nose pad, etc. For example, the temple or the nose pad is close to the facial artery, etc. The present solution does not limit this.

[0042] In a possible implementation, the wearable device further includes a display screen.

[0043] In a fourth aspect, an embodiment of the present application provides a wearable device, including a watch body and a watch band, further including a magnetic source and a magnetic sensor. Among them, the magnetic sensor is located on the watch body, and the magnetic source is located on the watch band; alternatively, the magnetic source is located on the watch body, and the magnetic sensor is located on the watch band;

[0044] The magnetic sensor 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 and the magnetic sensor caused by arterial vibration.

[0045] In a fifth aspect, the present application provides a blood pressure measurement method, which can be executed 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; generating blood pressure data based on the magnetic field change data.

[0046] In the embodiment of the present application, by collecting magnetic field change data, which is generated based on the relative displacement caused by arterial vibration, and then generating blood pressure data based on the magnetic field change data. This example can collect relatively accurate magnetic field change data based on the relative displacement caused by arterial vibration, which helps to generate accurate blood pressure data.

[0047] In a sixth aspect, the present application provides a blood pressure measurement device, including a processor and a memory; among them, the memory is used to store program codes, and the processor is used to call the program codes to execute the method provided in the fifth aspect.

[0048] In a seventh aspect, the present application provides a computer-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method provided in the fifth aspect.

[0049] In an eighth aspect, the present application provides a computer program product, when the computer program product runs on a computer, it causes the computer to execute the method provided in any possible implementation manner of the fifth aspect.

[0050] It can be understood 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 provided above are all related to the blood pressure sensors provided in any one of the first aspect and the blood pressure sensors provided in any one of the second aspect. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings used in the embodiments of the present application will be introduced below.

[0052] Figure 1A It is a schematic diagram of a wearable device provided by an embodiment of the present application;

[0053] Figure 1B It is a schematic structural diagram of the wearable device provided by an embodiment of the present application;

[0054] Figure 1C It is a schematic hardware structural diagram of the wearable device provided by an embodiment of the present application;

[0055] Figure 1D It is a schematic diagram of another wearable device provided by an embodiment of the present application;

[0056] Figure 1E It is a schematic diagram of yet another wearable device provided by an embodiment of the present application;

[0057] Figure 2A It is a schematic application diagram of a blood pressure sensor provided by an embodiment of the present application;

[0058] Figure 2B It is a schematic application diagram of another blood pressure sensor provided by an embodiment of the present application;

[0059] Figure 3A It is a schematic diagram of a blood pressure sensor 103 in a non-operating state provided by an embodiment of the present application;

[0060] Figure 3B It is a schematic diagram of a blood pressure sensor 103 in an operating state provided by an embodiment of the present application;

[0061] Figure 3C It is a schematic diagram of data processing provided by an embodiment of the present application;

[0062] Figure 4 It is a schematic flowchart of a blood pressure measurement method provided by an embodiment of the present application;

[0063] Figure 5 It is a schematic structural diagram of a blood pressure measurement device provided by an embodiment of the present application;

[0064] Figure 6 It is a schematic structural diagram of another blood pressure measurement device provided by an embodiment of the present application. Detailed implementation manners

[0065] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The terms used in the implementation manner part 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.

[0066] For ease of understanding, the following examples provide some explanations of concepts related to the embodiments of the present application for reference. As described below:

[0067] 1. Blood pressure

[0068] Blood pressure (BP) refers to the lateral pressure on the side wall of a blood vessel per unit area when blood flows inside the blood vessel. In other words, human blood pressure refers to the lateral pressure perpendicular to the blood vessel wall generated by the pulsating blood flow in the blood vessel. Among them, the peak value of pressure is systolic blood pressure (SBP), which can also be called high pressure; the valley value of pressure is diastolic blood pressure (DBP), which can also be called low pressure. Taking an adult as an example, the normal systolic blood pressure of the adult should be greater than 90mmHg (mmHg: blood pressure unit, millimeters of mercury) and less than 140mmHg, and the diastolic blood pressure should be greater than 60mmHg and less than 90mmHg. Systolic and diastolic blood pressure that are too high or too low will have adverse effects on health. Due to the difference in blood vessels, human blood pressure can also be classified into arterial blood pressure, venous blood pressure and capillary blood pressure. When measuring human blood pressure, arterial blood pressure is generally measured.

[0069] 2. Magnetic sensor

[0070] Magnetic sensors have a wide range of applications in various fields, and one of their uses is vibration detection when used in conjunction with magnets. By attaching a magnet to a vibrating object, a magnetic sensor can record the fluctuations in the magnetic field as the object moves. Vibrations caused by blood flow, often called 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 the pulsating blood flow and the compliant arterial walls produces subtle but vital vibrations that can convey valuable physiological information. Magnetic sensors are ideally suited to detecting these subtle vibrations, providing insight into the health of the cardiovascular system. In addition to detecting the heartbeat, abnormalities in blood flow patterns or vascular elasticity can also result in different vibration patterns that can be detected and analyzed using specialized sensors and signal processing techniques.

[0071] 3. Mechanical vibration waves

[0072] The propagation of mechanical vibration 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 their propagation speeds are different in different media and they cannot propagate at all in a vacuum, 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, reflection, etc. are the same, and the physical quantities used to describe them are also the same. It can be understood that the pulse vibration in this solution generates mechanical vibration waves.

[0073] The above exemplary description of the concept can be applied to the embodiments below.

[0074] Hereinafter, the system architecture of the embodiments of the present application will be introduced in detail with reference to the accompanying drawings.

[0075] Please refer to Figure 1A , Figure 1A which is a schematic diagram of a wearable device applicable to the embodiments of the present application.

[0076] The embodiments of the present application provide a wearable device 100, which can be used to measure blood pressure. As shown in Figure 1A Figure (a) therein, the wearable device 100 can be a watch. The wearable device 100 may include a watch body 101, a watch band 102, and a blood pressure sensor 103. Among them, the blood pressure sensor 103 can be attached to the side of the watch band 102 close to the pulse.

[0077] Specifically, when the user wears the wearable device 100 on the wrist as shown in Figure 1A Figure (b) therein, the blood pressure sensor 103 can be located above the artery position of the user's wrist. For example, as shown in Figure 1A Figure (c) therein, the blood pressure sensor 103 can be located above the radial artery of the user's wrist.

[0078] As shown in Figure 1B , the watch body 101 of the wearable device 100 may further include a signal processing unit 104.

[0079] As shown in Figure 1B , when the wearable device 100 is a watch, the blood pressure sensor 103 is attached to the side close to the body of the wearable part (for example, the watch band 102). This side of the watch band 102 can be located above the artery position of the user's wrist, such as above the radial artery position.

[0080] Figure 1C This is a schematic structural diagram of the wearable device 100 provided by the embodiments of the present application.

[0081] The following uses the wearable device 100 as an example to specifically illustrate the embodiments. It should be understood that the wearable device 100 may have more or fewer components than those shown in the figure, may combine two or more components, or may have different component configurations. The various components shown in the figure may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and / or application specific integrated circuits.

[0082] As Figure 1C shown, the wearable device may be a wearable device such as a bracelet, a watch, etc., and the wearable device 100 may also be a non-wearable device such as a wall-mounted sphygmomanometer, etc. The specific type of the wearable device in the embodiments of the present application is not particularly limited. The embodiments of the present application are only illustrated by taking the wearable device 100 as a watch as an example.

[0083] 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, and a button 109, a motor 110, a USB interface 111, a power management module 112, a battery 113, and a charging management module 114, as well as a SIM card interface 115, etc. Among them, the sensor module 105 may include a touch sensor 105A, etc.

[0084] It can be understood that the structure schematically shown 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 those shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0085] Among them, the signal processing unit 104 may be a microcontroller unit (MCU) or other unit having a signal processing function, and the embodiments of the present application do not limit this.

[0086] 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), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0087] 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, etc.

[0088] The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the signal processing unit 104 may include multiple groups of I2C buses. The signal processing unit 104 may be respectively coupled to the touch sensor 105A, the power management module 112, etc. through different I2C bus interfaces. For example, the signal processing unit 104 may be coupled to the touch sensor 105A through the I2C interface, enabling the signal processing unit 104 to communicate with the touch sensor 105A through the I2C bus interface to implement the touch function of the wearable device.

[0089] 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 general-purpose serial data bus 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 through the UART interface to implement the Bluetooth function.

[0090] The MIPI interface can be used to connect the signal processing unit 104 and peripheral devices such as the display screen 108. The MIPI interface includes a camera serial interface (CSI), a display serial interface (DSI), etc. The signal processing unit 104 and the display screen 108 communicate through the DSI interface to implement the display function of the wearable device.

[0091] The GPIO interface can be configured through software. The GPIO interface can be configured as a control signal or a data signal. The USB interface 111 is an interface that complies with the USB standard specification, and can specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. 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.

[0092] It can be understood that the interface connection relationships between the modules illustrated in the embodiments of the present invention are only illustrative descriptions and do not constitute a structural limitation on the wearable device. In other embodiments of the present application, the wearable device can also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0093] In the embodiments 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 blood pressure value of the user. For specific details, reference can be made to the description below, which will not be elaborated here.

[0094] The charging management module 114 is configured to receive a charging input from a charger. The charger can be a wireless charger or a wired charger. In some embodiments of wired charging, the charging management module 114 can receive the charging input from a wired charger through the USB interface 111. In some embodiments of wireless charging, the charging management module 114 can receive the wireless charging input through the wireless charging coil of the wearable device. While charging the battery 113, the charging management module 114 can also supply power to the wearable device through the power management module 112.

[0095] 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 the inputs from the battery 113 and / or the charging management module 114 and supplies power to the circuit components in the wearable device 100. For example, when the power management module 112 receives the inputs from the battery 113 and / or the charging management module 114, it can supply power to the signal processing unit 104, the internal memory 107, the display screen 108, the wireless communication module 106A, etc. The power management module 112 can also be used to monitor parameters such as the battery capacity, the number of battery cycles, and the battery health status (leakage, impedance). In some other embodiments, the power management module 112 can also be disposed in the signal processing unit 104. In some other embodiments, the power management module 112 and the charging management module 114 can also be disposed in the same device.

[0096] The wireless communication function of the wearable device can be implemented through the wireless communication module 106A, the mobile communication module 106B, the modulation and demodulation processor, and the baseband processor, etc.

[0097] The wireless communication module 106A can provide solutions for wireless communications applied to wearable devices, including wireless local area networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite systems (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc. The wireless communication module 106A can be one or more devices integrating at least one communication processing module. The wireless communication module 106A receives electromagnetic waves via an antenna, performs frequency modulation and filtering processing on the electromagnetic wave signals, and sends the processed signals to the signal processing unit 104. The wireless communication module 106A can also receive the signals to be sent from the signal processing unit 104, perform frequency modulation and amplification on them, and convert them into electromagnetic waves through the antenna for radiation.

[0098] The mobile communication module 106B can provide solutions for wireless communications applied to wearable devices, including 2G / 3G / 4G / 5G, etc. The mobile communication module 106B can include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 106B can receive electromagnetic waves through an antenna, perform filtering, amplification, etc. on the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. In some embodiments, at least some functional modules of the mobile communication module 106B can be arranged in the signal processing unit 104. In some embodiments, at least some functional modules of the mobile communication module 106B and at least some modules of the signal processing unit 104 can be arranged in the same device.

[0099] In the embodiments of the present application, the wearable device 100 can upload the blood pressure results measured by the wearable device 100 to the 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 historical blood pressure measurement results of the user sent by the user's other devices through the wireless communication module 106A or the mobile communication module 106B.

[0100] The button 109 includes a power-on button, a volume button, etc. The button 109 can be a mechanical button or a touch button. The wearable device can receive button inputs and generate key signal inputs related to the user settings and function controls of the wearable device.

[0101] The display screen 108 is used to display images, videos, etc. The 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.

[0102] In the embodiments of the present application, the display screen 108 can be used to display the user's blood pressure measurement results.

[0103] The motor 110 can generate a vibration prompt. The motor 110 can be used for incoming call vibration prompts and can also be used for touch vibration feedback. For example, touch operations on different applications (such as taking pictures, playing audio, etc.) can correspond to different vibration feedback effects. Touch operations on different areas of the display screen 108 can also correspond to different vibration feedback effects for the motor 110.

[0104] The internal memory 107 can include one or more random access memories (RAM) and one or more non-volatile memories (NVM).

[0105] The random access memory can include a static random-access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a 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.

[0106] Non-volatile memory may include disk storage devices and flash memory. Flash memory can be classified into NOR FLASH, NAND FLASH, 3D NAND FLASH, etc. according to the operating principle, and can be classified into single-level cell (SLC), multi-level cell (MLC), triple-level cell (TLC), quad-level cell (QLC), etc. according to the number of potential levels of storage cells. According to the storage specification, it can include universal flash storage (UFS), embedded multi media Card (eMMC), etc. Random access memory can be directly read and written by the signal processing unit 104, and can be used to store the operating system or executable programs (such as machine instructions) of other running programs, and can also be used to store data of users and application programs, etc. Non-volatile memory can also store executable programs and store data of users and application programs, etc., and can be pre-loaded into random access memory for direct reading and writing by the signal processing unit 104.

[0107] 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.

[0108] The SIM card interface 115 is used to connect the SIM card. The SIM card can be inserted into or removed from the SIM card interface 115 to achieve contact and separation from the wearable device. 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 communication. In some embodiments, the wearable device uses an eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the wearable device and cannot be separated from the wearable device.

[0109] In some embodiments, the wearable device 100 may not include the SIM card interface 115.

[0110] The touch sensor 105A, also known as the "touch control device". The touch sensor 105A can be disposed on the display screen 108, and the touch sensor 105A and the display screen 108 together form a touch screen, also known as the "touch control screen". The touch sensor 105A is used to detect touch operations acting thereon or nearby. The touch sensor can transmit the detected touch operations to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through the display screen 108. In some other embodiments, the touch sensor 105A can also be disposed on the surface of the wearable device, at a different position from where the display screen 108 is located.

[0111] Optionally, the wearable device 100 may further include a photoplethysmography (PPG) sensor. The wearable device 100 can obtain the user's health data based on the PPG signals collected by the PPG sensor. The user's health data includes but is not limited to: heart rate, blood oxygen, respiratory rate, blood oxygen saturation (SpO2), etc.

[0112] The above Figures 1A - 1C The above example is introduced with the blood pressure sensor being an integrated design. Alternatively, please refer to Figure 1D , Figure 1D which is a schematic diagram of another wearable device applicable to the embodiments of the present application. The wearable device 120 may include a watch body 121, a watch band 122, and a blood pressure sensor. Among them, the magnetic sensor 123 in the blood pressure sensor is located on the watch band 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 (specific details can be referred to the following description and will not be elaborated here).

[0113] Again, for example, please refer to Figure 1E , Figure 1E which is a schematic diagram of yet another wearable device applicable to the embodiments of the present application. The wearable device 140 may include a watch body 141, a watch band 142, and a blood pressure sensor. Among them, the magnetic source 143 in the blood pressure sensor is located on the watch band 142, and the magnetic sensor 144 in the blood pressure sensor is located on the watch body 141. It can be understood that a buffer is provided between the magnetic sensor 144 and the skin (specific details can be referred to the following description and will not be elaborated here).

[0114] Regarding Figure 1D and Figure 1E the introductions of which, reference can be made to Figures 1A - 1C the introduction, and details will not be elaborated here.

[0115] Next, the blood pressure sensor 103 provided by the embodiments of the present application will be introduced. It can be understood that the following blood pressure sensor is also applicable to Figure 1D and Figure 1E herein.

[0116] Please refer to Figure 2A , Figure 2A which is a schematic diagram of the application of a blood pressure sensor 103 provided by an embodiment of the present application. As Figure 2A shown, the blood pressure sensor 103 includes a magnetic source 1031 and a magnetic sensor 1032.

[0117] In a possible implementation, the magnetic source 1031 can be at least one of a permanent magnet and an electromagnet. Exemplarily, the magnetic source intensity range can be 1 to 2000 gauss.

[0118] In a possible implementation, the magnetic sensor 1032 can be a magnetoresistive sensor. Exemplarily, the magnetoresistive sensor can be at least one of the following: Anisotropy Magneto Resistance (AMR), Giant Magneto Resistance (GMR), and Tunnel Magneto Resistance (TMR).

[0119] Wherein, a preset distance is provided between the magnetic source 1031 and the magnetic sensor 1032. For example, the preset distance can be between 1 mm and 10 cm. In this way, it can ensure that the magnetic field change caused by pulse vibration can be effectively collected.

[0120] Wherein, a buffer 1033 is provided between the magnetic sensor 1032 and the skin. The buffer 1033 is used to weaken the vibration of the magnetic sensor 1032 when the artery vibrates.

[0121] It can be understood that the skin can be human skin or animal skin.

[0122] In a possible implementation, the buffer 1033 can be sponge or foam plastic. The size of the buffer 1033 is not limited in this solution. Optionally, the buffer 1033 can be slightly larger than the magnetic sensor 1032. In this way, the purpose of buffering can be better achieved.

[0123] Wherein, the magnetic source 1031 is attached to the skin. Or, a hard object is provided between the magnetic source 1031 and the skin. It can be understood that the function of the hard object is to conduct the mechanical vibration wave generated by pulse vibration. That is to say, 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, etc.

[0124] It can be understood that a hard object or the like can also be provided between the magnetic sensor 1032 and the buffer 1033, and this solution does not limit this.

[0125] Among them, when the artery vibrates, a mechanical wave of surface pulse vibration will be generated, and this mechanical wave of vibration will cause relative movement (such as relative displacement) between the magnetic source and the magnetic sensor, thereby causing a change in the relative magnetic field intensity. By collecting the magnetic field change data through the magnetic sensor, blood pressure data can be generated accordingly.

[0126] That is to say, the magnetic sensor 1032 is used to collect magnetic field change data, 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 1031 and the magnetic sensor 1032 caused by the artery vibration.

[0127] Exemplarily, the user wears Figures 1A - 1E the wearable device 100 shown on the wrist. Among them, the wearable device 100 includes a blood pressure sensor 103 as Figure 2A shown. 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 position. Based on the pulse vibration, the magnetic source 1031 in the blood pressure sensor 103 vibrates accordingly. 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 vibrates with a small amplitude. Due to the relative displacement generated between the magnetic source 1031 and the magnetic sensor 1032, a magnetic field change is caused. Based on the magnetic field change, the magnetic sensor 1032 then collects the magnetic field change data.

[0128] As Figure 3A and Figure 3B shown, they are respectively schematic diagrams of a blood pressure sensor 103 provided by an embodiment of the present application in an unoperated state and an operated state. Referring to Figure 3A , when the blood pressure sensor is in an unoperated state (for example, there is no relative displacement between the magnetic source and the magnetic sensor), the position difference z1 in the z direction (i.e., the pulse beating direction) between the magnetic source and the magnetic sensor is fixed. This z1 = g1 - t1, where g1 is the distance between the upper surface of the magnetic sensor and the skin in the unoperated state; t1 is the distance between the upper surface of the magnetic source and the skin in the unoperated state.

[0129] Referring to Figure 3B , when the blood pressure sensor is in an operated state (the magnetic source vibrates together with the user's pulse vibration), the position difference z2 in the z direction between the magnetic source and the magnetic sensor is not equal to z1. Among them, this z2 = g2 - t2. Where g2 is the distance between the upper surface of the magnetic sensor and the skin in the operated state; t2 is the distance between the upper surface of the magnetic source and the skin in the operated state. Since a buffer is provided between the magnetic sensor and the skin, g2 is equal to g1. That is to say, z2 = g1 - t2. Therefore, z2 is less than z1, or z2 is greater than z1.

[0130] 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.

[0131] In a possible implementation, the number of the magnetic sources 1031 can be at least one. For example, the number of the magnetic sources 1031 can be multiple. For example, the multiple magnetic sources 1031 are arranged in an array. Based on this design, it can be ensured that the magnetic sources can better cover the artery area, so as to solve the problems in actual use such as thin pulse, difficult to cover, and difficult to align with the artery for operation.

[0132] In a possible implementation, the number of the magnetic sensors 1032 can be at least one. For example, the number of the magnetic sensors 1032 can be multiple. For example, the multiple magnetic sensors 1032 are arranged in an array or other arrangements. 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 also be improved.

[0133] In a possible implementation, the magnetic source 1031 and the magnetic sensor 1032 are encapsulated together by a soft magnetic material. This is done to isolate the possible interference caused by the external magnetic field. It can be understood that the magnetic source 1031, the magnetic sensor 1032, and the buffer 1033 are all encapsulated integrally.

[0134] In another possible implementation, the magnetic source 1031 and the magnetic sensor 1032 can be split. For example, the magnetic source is placed in the watch body, and the magnetic sensor is placed in the watch band. Or, the magnetic source is placed in the watch band, and the magnetic sensor is placed in the watch body, etc. Of course, there can also be other settings, and this solution does not limit this.

[0135] The embodiment of the present application provides a blood pressure sensor including a magnetic source, a magnetic sensor, and a buffer provided between the magnetic sensor and the skin. Wherein, the buffer is used to weaken the vibration of the magnetic sensor when the artery vibrates, the magnetic sensor is used to collect magnetic field change data, 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 above artery vibration. By doing so, based on the setting of the buffer, it can be ensured that only one of the magnetic source and the magnetic sensor vibrates, and then 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 other additional operations by the user, improving the convenience and comfort of the user.

[0136] Please refer to Figure 2B , Figure 2B which is another application schematic diagram of the blood pressure sensor 103 provided by the embodiment of the present application. As Figure 2B shown, the blood pressure sensor 103 includes a magnetic source 1034 and a magnetic sensor 1035.

[0137] In a possible implementation, the magnetic source 1034 can be at least one of a permanent magnet and an electromagnet.

[0138] In a possible implementation, the magnetic sensor 1035 can be a magnetoresistive sensor. Exemplarily, the magnetoresistive sensor can be at least one of the following: anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), and tunneling magnetoresistance (TMR).

[0139] Wherein, a preset distance is provided between the magnetic source 1034 and the magnetic sensor 1035. For example, the preset distance can be between 1 mm and 10 cm. In this way, it can ensure that the magnetic field changes caused by pulse vibration can be effectively collected.

[0140] Wherein, a buffer 1036 is provided between the magnetic source 1034 and the skin. The buffer 1036 is used to weaken the vibration of the magnetic source 1034 when the artery vibrates.

[0141] It can be understood that the skin can be human skin or animal skin.

[0142] In a possible implementation, the buffer 1036 can be sponge or foam plastic. The size of the buffer 1036 is not limited in this solution. Optionally, the buffer 1036 can be slightly larger than the magnetic source 1034. In this way, the purpose of buffering can be better achieved.

[0143] Wherein, the magnetic sensor 1035 is attached to the skin. Alternatively, a hard object is provided between the magnetic sensor 1035 and the skin. It can be understood that the function of the hard object is to conduct mechanical vibration waves. That is to say, the hard object does not affect the effect of the magnetic sensor 1035 following the artery vibration. For example, the hard object can be hard plastic or other non-magnetic materials.

[0144] It can be understood that a hard object or the like can also be provided between the magnetic source 1034 and the buffer 1036, and this solution does not limit this.

[0145] Wherein, when the artery vibrates, a surface pulse vibration mechanical wave will be generated, and the vibration mechanical wave will cause relative movement (such as relative displacement) between the magnetic source and the magnetic sensor, thereby causing a change in the relative magnetic field strength. By collecting the magnetic field change data with the magnetic sensor, blood pressure data can be generated.

[0146] That is to say, the magnetic sensor 1035 is used to collect magnetic field change data, 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 1034 and the magnetic sensor 1035 caused by the artery vibration.

[0147] Exemplarily, the user willFigures 1A - 1E The wearable device 100 shown is worn on the wrist. Among them, the wearable device includes, as Figure 2B shown, a blood pressure sensor 103. In the blood pressure sensor 103, a magnetic sensor 1035 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 along with the vibration. 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 has a small vibration amplitude. Due to the relative displacement generated between the magnetic source 1034 and the magnetic sensor 1035, a magnetic field change is caused. Based on the magnetic field change, the magnetic sensor 1035 further acquires magnetic field change data.

[0148] In a possible implementation, the number of the magnetic sensors 1035 can be at least one. For example, the number of the magnetic sensors 1035 can be multiple, and the multiple magnetic sensors 1035 are arranged in an array. Based on this design, it can be ensured that the arterial area can be better covered, which can solve problems such as thin pulse, difficult to cover, and difficult artery alignment operation in actual use, and can improve the accuracy of the acquired magnetic field change data and the accuracy of blood pressure data measurement.

[0149] In a possible implementation, the number of the magnetic sources 1034 can be at least one. For example, the number of the magnetic sources 1034 can be multiple. For example, the multiple magnetic sources 1034 are arranged in an array.

[0150] In a possible implementation, the magnetic source 1034 and the magnetic sensor 1035 are encapsulated together by a soft magnetic material. This is done to isolate the possible interference caused by external magnetic fields. It can be understood that the magnetic source 1034, the magnetic sensor 1035, and the buffer 1036 are all integrally encapsulated.

[0151] In another possible implementation, the magnetic source 1034 and the magnetic sensor 1035 can be separated. For example, the magnetic source is placed in the watch body and the magnetic sensor is placed in the watch band. Or, the magnetic source is placed in the watch band and the magnetic sensor is placed in the watch body, etc. Of course, there can also be other settings, and this solution does not limit this.

[0152] An embodiment of the present application provides a blood pressure sensor including a magnetic source, a magnetic sensor, and a buffer provided between the magnetic source and the skin. Wherein, the buffer is used to weaken the vibration of the magnetic source when the artery vibrates, the magnetic sensor is used to collect magnetic field change data, 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 above artery vibration. By doing so, based on the setting of the buffer, it can be ensured that only one of the magnetic source and the magnetic sensor vibrates, and then 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 other additional operations by the user, improving the convenience and comfort of the user.

[0153] It should be noted that the embodiment of the present application is introduced by taking blood pressure measurement based on pulse as an example. It can be understood that it can also be based on the carotid artery in the neck, abdominal artery, facial artery, etc. for measurement. The embodiment of the present application is introduced by taking a wearable device as a watch as an example, and it can also be in other forms such as glasses. This solution does not limit the measurement position and the specific form of the corresponding wearable device.

[0154] The above examples introduce two blood pressure sensors provided by the present application. The following introduces how the embodiment of the present application generates blood pressure data based on the magnetic field change data.

[0155] In a first possible implementation manner, the above wearable device includes a blood pressure sensor and also includes a signal processing unit. The signal processing unit is used to calculate blood pressure data based on the magnetic field change data.

[0156] Exemplarily, the signal processing unit can be, for example, a Central Processing Unit (CPU), a neural processing unit (NPU), etc. Among them, 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 deduced according to the association between the pulse transit time and the blood pressure. Again, 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 deduced based on the regression method.

[0157] As Figure 3CAs shown in the figure, it is a schematic diagram of data processing provided by an embodiment of the present application. In this example, the wearable device includes a blood pressure sensor, and also includes an amplifier, a filter, an analog-to-digital converter, and a signal processing unit. Among them, the amplifier is used to amplify the power of the magnetic field change data output by the blood pressure sensor. The filter is used to filter out noise from the output of the amplifier. The analog-to-digital 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, reference can be made to the above records and will not be elaborated here.

[0158] Furthermore, the wearable device displays the blood pressure data on the display screen. That is to say, in this example, the blood pressure data is calculated by the wearable device.

[0159] In the second possible implementation, the above wearable device communicates wirelessly with other devices. The wearable device can send the above magnetic field change data to other devices, and the other devices calculate the blood pressure data. Then, the wearable device receives the blood pressure data from the other devices. Among them, the other devices can be, for example, a mobile phone, a computer, a server, or other wearable devices, etc. This solution does not limit this.

[0160] That is to say, in this example, the blood pressure data is calculated by other devices.

[0161] This solution is based on accurately detecting the mechanical vibration wave of the body surface pulse, and based on the collected magnetic field change data, it is then applied to blood pressure estimation, improving the accuracy of blood pressure measurement.

[0162] The above describes the wearable device and the blood pressure sensor of the embodiment of the present application. Next, the method of the embodiment of the present application will be introduced in detail.

[0163] Refer to Figure 4 As shown in the figure, it is a schematic flowchart of a blood pressure measurement method provided by an embodiment of the present application. Optionally, this method can be applied to the aforementioned wearable device, such as Figure 1A or Figure 1D or Figure 1E the wearable device shown. As Figure 4 shown, the blood pressure measurement method can include steps 401 - 402. It should be understood that for the convenience of description, the present application describes it in the order of 401 - 402, and does not aim to limit that it must be executed in the above order. The embodiment of the present application does not limit the execution order, execution time, execution times, etc. of the above one or more steps. The following describes the execution subjects of steps 401 - 402 of the blood pressure measurement method as the wearable device as an example, and the present application is equally applicable to other execution subjects. Steps 401 - 402 are specifically as follows:

[0164] 401. Collect magnetic field change data, where the magnetic field change is generated based on the relative displacement caused by arterial vibration.

[0165] Exemplarily, the relative displacement may be the displacement between the magnetic source and the magnetic sensor in the foregoing embodiments. Of course, it may also be the relative displacement between other units, and this solution places no restrictions thereon.

[0166] In a possible implementation manner, collect the magnetic field change data based on the foregoing blood pressure sensor. For the introduction of this part, reference may be made to the description of the foregoing Figure 2A 、 Figure 2B illustrated embodiments, and details are not described herein again.

[0167] 402. Generate blood pressure data based on the magnetic field change data.

[0168] Exemplarily, the wearable device can obtain the blood pressure data by processing the above magnetic field change data through a medical model algorithm or a neural network algorithm. For the introduction of this part, reference may be made to the description of the foregoing Figure 3C illustrated embodiments, and details are not described herein again.

[0169] In the embodiments of the present application, by collecting magnetic field change data, which is generated based on the relative displacement caused by arterial vibration, and then generating blood pressure data based on the magnetic field change data. In this example, relatively accurate magnetic field change data can be collected based on the relative displacement caused by arterial vibration, which helps to generate accurate blood pressure data.

[0170] It should be noted that in each embodiment of the present application, if there is no special description and logical conflict, the terms and / or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0171] The method of the embodiments of the present application is elaborated in detail above. Below, the devices of the embodiments of the present application are provided. It can be understood that in each device embodiment of the present application, the division of multiple units or modules is only a logical division according to functions and does not limit the specific structure of the device. In specific implementations, some of the functional modules may be further divided into more fine-grained functional modules, and some functional modules may also be combined into one functional module. However, regardless of whether these functional modules are divided or combined, the general processes executed by the device are the same. For example, some devices include a receiving unit and a transmitting unit. In some designs, the transmitting unit and the receiving unit can also be integrated into a communication unit, and this communication unit can implement the functions achieved by the receiving unit and the transmitting unit. Generally, each unit corresponds to its own program code (or program instructions). When the program code corresponding to each unit runs on the processor, the unit is controlled by the processing unit to execute the corresponding process to achieve the corresponding function.

[0172] The embodiments of the present application also provide a device for implementing any of the above methods. For example, a blood pressure measurement device is provided, which includes modules (or means) for implementing each step executed by the wearable device in any of the above methods.

[0173] For example, with reference to Figure 5 shown in the figure, it is a schematic structural diagram of a blood pressure measurement device provided by the embodiments of the present application. This blood pressure measurement device is used to implement the aforementioned blood pressure measurement method, for example Figure 4 the blood pressure measurement method shown in the figure.

[0174] As Figure 5 shown in the figure, the device may include an acquisition module 501 and a processing module 502, specifically as follows:

[0175] The acquisition module 501 is used to collect magnetic field change data, and the magnetic field change is generated based on the relative displacement caused by arterial vibration.

[0176] The processing module 502 is used to generate blood pressure data based on the magnetic field change data.

[0177] The introduction of each of the above modules can refer to the description in the foregoing embodiments and will not be elaborated herein.

[0178] It should be understood that the division of each module in the above devices is only a division of logical functions. In actual implementation, all or part of them can be integrated into a physical entity, or physically separated. In addition, the modules in the blood pressure measurement device can be implemented in the form of a processor calling software. For example, the blood pressure measurement device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or the functions of each module of the device. The processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside or outside 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 implemented by designing the hardware circuits. The hardware circuits can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units are implemented by designing the logical relationships of the components in the circuit. Again, 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 relationships between the logic gate circuits are configured through a configuration file to implement the functions of some or all of the above units. All modules of the above device can be all implemented in the form of a processor calling software, or all implemented in the form of hardware circuits, or part implemented in the form of a processor calling software, and the remaining part implemented in the form of hardware circuits.

[0179] Referring to Figure 6 as shown, it is a schematic diagram of the hardware structure of another blood pressure measurement device provided by an embodiment of the present application. As Figure 6 shown, the blood pressure measurement device 600 (the device 600 can specifically be a computer device) includes a memory 601, a processor 602, a communication interface 603, and a bus 604. Among them, the memory 601, the processor 602, and the communication interface 603 are communicatively connected to each other through the bus 604.

[0180] The memory 601 can be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM).

[0181] The memory 601 may store a program. 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 execute the respective steps of the blood pressure measurement method according to the embodiments of the present application.

[0182] The processor 602 is a circuit with signal processing capabilities. In one implementation, the processor 602 may be a circuit with instruction reading and running capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a type of microprocessor), or a digital signal processor (DSP), etc.; in another implementation, the processor 602 may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of this hardware circuit is fixed or can be reconfigured. 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 document to implement the configuration of the hardware circuit 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 may also be a hardware circuit designed for artificial intelligence, which can be understood as a type of 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 by the units in the blood pressure measurement device according to the embodiments of the present application, or to execute the blood pressure measurement method according to the method embodiments of the present application.

[0183] It can be seen that each module in the above device may 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.

[0184] In addition, each module in the above device may be fully or partially integrated together, or may be independently implemented. 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 each module of the device. The types of the at least one processor may be different, such as including a CPU and an FPGA, a CPU and an artificial intelligence processor, a CPU and a GPU, etc.

[0185] The communication interface 603 uses a transceiver device such as, but not limited to, a transceiver to implement communication between the device 600 and other devices or communication networks. For example, data can be obtained through the communication interface 603.

[0186] The bus 604 may include a path for transmitting information between various components of the device 600 (such as, the memory 601, the processor 602, and the communication interface 603).

[0187] It should be noted that although Figure 6 the illustrated device 600 only shows the memory, the processor, and the communication interface, in the specific implementation process, those skilled in the art should understand that the device 600 also includes other devices necessary for normal operation. At the same time, according to specific needs, those skilled in the art should understand that the device 600 may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the device 600 may also only include the devices necessary for implementing the embodiments of the present application, and do not necessarily include Figure 6 all the devices shown in

[0188] The embodiments of the present application also provide a computer-readable storage medium, in which instructions are stored. When it runs on a computer or a processor, the computer or the processor is enabled to execute one or more steps in any of the above methods.

[0189] The embodiments of the present application also provide a computer program product containing instructions. When the computer program product runs on a computer or a processor, the computer or the processor is enabled to execute one or more steps in any of the above methods.

[0190] It should be understood that in the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; wherein A and B can be singular or plural. Also, in the description of the present application, unless otherwise specified, "multiple" refers to 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 items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, wherein a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art can understand that the words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. do not limit them to be necessarily different. Meanwhile, in the embodiments of the present 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 the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner for ease of understanding.

[0191] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the division of the unit 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 interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0192] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0193] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a read-only memory (ROM), a random access memory (RAM), a magnetic medium, such as a floppy disk, a hard disk, a magnetic 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), etc.

[0194] As described above, the above is only the specific implementation manner of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope 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 used to attenuate the vibration of the magnetic sensor when the artery vibrates; or, a buffer is provided between the magnetic source and the skin, and the buffer is used to attenuate the vibration of the magnetic source when the artery vibrates; the magnetic sensor is used 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 is 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 measuring device, characterized in that, Comprising: a processor, the processor is coupled with a memory, and the processor is used to call the 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 run on the computer, the computer is caused to execute the method according to claim 10.

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