Blood pressure measuring method and related device

Abstract

The invention discloses a blood pressure measuring method and a related device.The blood pressure measuring method is applied to wearable equipment, the wearable equipment comprises air bags, the air bags comprise a first air bag and a second air bag, an air hole is formed between the first air bag and the second air bag, and the air hole can be used for achieving circulation of air flow between the air bags; when the wearable device is worn on the human body, the first air bag is located between the second air bag and the skin of the human body, the area of the first air bag projected to the skin of the human body is smaller than the area of the second air bag projected to the skin of the human body, and the wearable device can be used for collecting pressure signals in the air bag inflation or deflation process and calculating the blood pressure value based on the pressure signals. It can be seen that the wearable device comprising the multiple layers of air bags is provided, due to the design of the multiple layers of air bags, the air bags can provide large enough compression force during expansion, the contact area between the first air bag and the skin is small, good air permeability is achieved, and the comfort degree of a user during blood pressure measurement is effectively improved.

Description

Technical Field

[0001] This application relates to the field of terminal and computer technology, and in particular to blood pressure measurement methods and related devices. Background Technology

[0002] Blood pressure is an important physiological parameter reflecting human vital signs, and how to measure blood pressure is currently a hot research topic. However, existing wearable devices on the market mainly use airbags to compress blood vessels, and measure blood pressure by collecting the pressure signals transmitted during the process of blocking and opening the blood vessels. In order to achieve the purpose of blocking blood vessels, the airbag is usually designed to be large, resulting in poor wearing comfort. In addition, the airbag needs to fit snugly against the wrist during use. A large airbag will make the airbag too thick and heavy, with poor breathability, which can easily cause sweating and reduce the user experience.

[0003] However, reducing the size of the air bladder will inevitably reduce the air volume of the air bladder, resulting in insufficient pressure on the wrist after the air bladder inflates, making it impossible to measure blood pressure or the measured blood pressure will be inaccurate.

[0004] Therefore, how to improve the comfort of blood pressure measurement while ensuring its accuracy is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a blood pressure measurement method and related device, which achieves both improved comfort during blood pressure measurement and ensures accuracy.

[0006] In a first aspect, embodiments of this application provide a wearable device, which includes an airbag, comprising a first airbag and a second airbag, with an air hole between the first airbag and the second airbag for airflow between the first airbag and the second airbag. When the wearable device is worn on the human body, the first airbag is located between the second airbag and the human skin, and the area of ​​the first airbag projected onto the human skin is smaller than the area of ​​the second airbag projected onto the human skin. The wearable device can be used to collect pressure signals during the inflation or deflation of the airbag and calculate blood pressure values ​​based on the pressure signals.

[0007] As can be seen, this application provides a wearable device containing multiple airbags. This wearable device is used to measure the user's blood pressure. The contact area between the airbags and the skin is small, which effectively improves the user's comfort when measuring blood pressure. In addition, the structure of the multiple airbags can provide sufficient pressure when measuring blood pressure to block blood vessels and complete the measurement. Furthermore, the air holes between the airbags can quickly inflate the multiple airbags, ensuring the normal progress of blood pressure measurement.

[0008] In conjunction with the first aspect, in one possible implementation, the wearable device also includes a wearing body for wearing the wearable device on the human body, with an airbag located on the wearing body, wherein when the wearable device is worn on the wrist, the airbag faces the radial artery on the wrist.

[0009] In other words, the airbag can be positioned at a specific location on the wearer, allowing it to face the radial artery on the wrist for precise blood pressure measurement.

[0010] In conjunction with the first aspect, in one possible implementation, the length of the first airbag is greater than or equal to a first threshold, wherein when the wearable device is worn on the wrist, the first airbag with a length greater than or equal to the first threshold covers the radial artery.

[0011] The length of the first air bladder is greater than a specified threshold in order to cover the radial artery of the general population, making the wearable device suitable for blood pressure measurement on the wrist with various wrist circumferences.

[0012] In conjunction with the first aspect, in one possible implementation, the first distance between the first side of the first airbag and the second side of the second airbag is within a first range, wherein when the wearable device is worn on the wrist, the pressure exerted on the human skin by the first airbag after inflation is concentrated toward the radial artery, the first side is located on the first side of the first airbag, the second side is located on the first side of the second airbag, and the first side is the side away from the head of the wearable device.

[0013] In other words, the designated positional relationship between the first and second airbags allows the pressure exerted on the skin by the airbags after inflation to be concentrated on the radial artery, so that the airbags can better compress the blood vessels when measuring blood pressure.

[0014] In conjunction with the first aspect, in one possible implementation, the wearable device further includes a pressure sensor. When the wearable device is worn on the human body, the pressure sensor is located on the side of the first airbag close to the human skin. The pressure sensor is positioned in the middle of the first airbag. The pressure sensor and the first airbag satisfy a first condition. After the first airbag expands, the effective pressure width between the first airbag and the user's skin is greater than a third threshold. The first condition includes one or more of the following: the distance between the edge of the pressure sensor and the edge of the first airbag is greater than a second threshold, and the ratio of the width of the pressure sensor to the width of the first airbag is less than the force transmission attenuation coefficient of the airbag.

[0015] It can be seen that by controlling the relative size of the pressure sensor and the first airbag and / or the correlation between the pressure sensor and the first airbag in width, the effective compression width of the first airbag can be controlled, thereby controlling the pressure sensor to collect accurate pressure signals.

[0016] In conjunction with the first aspect, in one possible implementation, a connecting region is provided between the first airbag and the second airbag, the connecting region being used to fix the first airbag and the second airbag, and an air hole is provided in the middle of the connecting region.

[0017] In other words, the connection between the first and second airbags can be achieved through the connecting area.

[0018] Secondly, embodiments of this application provide a wearable device, which includes: a wearing body for wearing the wearable device on a human body, a portion of the wearing body including a cavity, the portion including the cavity forming an air bladder, the air bladder containing a filler for providing internal support for the air bladder, and / or, not hindering the expansion of the air bladder or providing assistance for the expansion of the air bladder when the air bladder is inflated; wherein, the wearable device can be used to collect pressure signals during the inflation or deflation of the air bladder, and calculate blood pressure values ​​based on the pressure signals.

[0019] As can be seen, the embodiments of this application provide a wearable device with an airbag located inside the wearer. When the wearable device is not measuring blood pressure, the airbag is indistinguishable from the wearer without a cavity in appearance. When the wearable device measures blood pressure, the airbag can be inflated to block blood vessels. Moreover, the airbag is only a part of the wearer and has a small contact area with the skin when inflated, which effectively improves the user's comfort when measuring blood pressure.

[0020] In conjunction with the second aspect, in one possible implementation, the filler is an elastic or variable material.

[0021] In conjunction with the second aspect, in one possible implementation, the structure of the filler is columnar, grid-like, or honeycomb-like.

[0022] In conjunction with the second aspect, in one possible implementation, the airbag is located on the wearer, wherein when the wearable device is worn on the wrist, the airbag faces the radial artery on the wrist.

[0023] In other words, the airbag can be positioned at a specific location on the wearer, allowing it to face the radial artery on the wrist for precise blood pressure measurement.

[0024] In conjunction with the first and second aspects, in one possible implementation, the surface of the airbag includes: a slope with different tilt angles at different positions, the slope with different tilt angles at different positions forming a first pattern, and when the wearable device is worn on the human body, the pressure applied outward by the airbag surface including the first pattern is directed towards the detection target on the human body when the airbag inflates.

[0025] In other words, the surface of the air bladder can have a certain pattern design. This pattern design can control the pressure applied outward by the air bladder surface when the air bladder is inflated, so as to point towards the radial artery on the wrist, thereby achieving better blocking of the detection target and improving the accuracy of blood pressure measurement.

[0026] In one possible implementation, combining the first and second aspects, the surface of the airbag includes: a first surface made of a first material and a second surface made of a second material, wherein the first material and the second material have different hardnesses. When the wearable device is worn on the human body, the pressure applied outward by the first surface and the second surface is directed towards the detection target on the human body when the airbag is inflated.

[0027] In other words, the surface of the airbag can have a certain material design. Through this material device, the pressure applied outward by the airbag surface when the airbag is inflated can be directed towards the radial artery on the wrist, so as to achieve better blocking of the detection target and improve the accuracy of blood pressure measurement.

[0028] In combination with the first and second aspects, in one possible implementation, the surface of the airbag includes: a third surface with a first thickness and a fourth surface with a second thickness, the first and second thicknesses being different, and when the wearable device is worn on the human body, the pressure applied outward by the third and fourth surfaces is directed towards the detection target on the human body when the airbag is inflated.

[0029] In other words, the surface of the airbag can have a certain thickness design. This thickness design can control the pressure applied outward by the airbag surface when the airbag is inflated, so as to point towards the radial artery on the wrist, thereby achieving better blocking of the detection target and improving the accuracy of blood pressure measurement.

[0030] Combining the first and second aspects, in one possible implementation, the pressure signal includes: a pressure signal inside the airbag.

[0031] In other words, when measuring blood pressure, the user's blood pressure value can be calculated by collecting the pressure signal inside the airbag.

[0032] In conjunction with the first and second aspects, in one possible implementation, the wearable device further includes a pressure sensor. When the wearable device is worn on the human body, the pressure sensor is located on the side of the airbag close to the human skin, and the pressure signal also includes the pressure signal collected by the pressure sensor.

[0033] In other words, when measuring blood pressure, in addition to collecting the pressure signal inside the airbag, a pressure signal can also be collected through the pressure sensor on the surface of the airbag facing the skin. These two pressure signals are used to calculate the user's blood pressure value, thereby improving the accuracy of blood pressure measurement.

[0034] Thirdly, embodiments of this application provide a blood pressure measurement method, which is applied to a wearable device described in the first aspect or any implementation thereof, or in the second aspect or any implementation thereof. The method includes: the wearable device controlling an airbag to inflate and then deflate; the wearable device acquiring a pressure signal during the inflation or deflation of the airbag; and the wearable device calculating a blood pressure value based on the pressure signal.

[0035] The method provided in the third aspect allows for the measurement of blood pressure by compressing blood vessels with a specially designed airbag. This ensures that the airbag provides sufficient pressure when compressing blood vessels, while also having a small contact area with the skin, providing good breathability and improving comfort during the blood pressure measurement process.

[0036] In conjunction with the third aspect, in one possible implementation, the pressure signal includes: a pressure signal inside the airbag.

[0037] In other words, when measuring blood pressure, the user's blood pressure value can be calculated by collecting the pressure signal inside the airbag.

[0038] In conjunction with the third aspect, in one possible implementation, the wearable device also includes a pressure sensor, which is located on the side of the airbag close to the skin when the wearable device is worn on the human body, and the pressure signal also includes the pressure signal collected by the pressure sensor.

[0039] In other words, when measuring blood pressure, in addition to collecting the pressure signal inside the airbag, a pressure signal can also be collected through the pressure sensor on the surface of the airbag facing the skin. These two pressure signals are used to calculate the user's blood pressure value, thereby improving the accuracy of blood pressure measurement.

[0040] Fourthly, embodiments of this application provide an electronic device, including: a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method as described in the third aspect or any implementation thereof.

[0041] Fifthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method as described in the third aspect or any of the implementations of the third aspect.

[0042] Sixthly, embodiments of this application provide a computer program product, which includes a computer program that, when executed by a processor, implements the method described in the third aspect or any of the implementations of the third aspect. Attached Figure Description

[0043] Figure 1A schematic diagram of the hardware structure of the electronic device 100 provided in the embodiments of this application;

[0044] Figure 2 This is a schematic diagram of the structure of a multi-layer airbag provided in an embodiment of this application;

[0045] Figure 3 A schematic diagram of the electronic device 100 provided in this application being worn on a user's wrist;

[0046] Figure 4 This is a schematic diagram of the structure of the airbag 200 provided in the embodiments of this application;

[0047] Figure 5 Provided for the embodiments of this application Figure 4 A schematic diagram of the structure of airbag 200 when viewed from the shown perspective 1;

[0048] Figure 6 This is a schematic diagram of the air holes on the airbag 200 provided in an embodiment of this application;

[0049] Figure 7 A comparative schematic diagram of the airbag-integrated watchband provided in the embodiments of this application and a common watchband containing an airbag;

[0050] Figure 8 A schematic diagram of the electronic device 100 provided in this application being worn on a user's wrist;

[0051] Figure 9 A schematic diagram illustrating the principle by which the filling material provided in this application embodiment assists in the inflation of the airbag 200;

[0052] Figure 10 A cross-sectional schematic diagram of the airbag 200 provided in an embodiment of this application;

[0053] Figure 11 A schematic diagram of the surface of an airbag 200 provided in an embodiment of this application;

[0054] Figure 12 This is a schematic cross-sectional view of the airbag 200 provided in an embodiment of this application;

[0055] Figure 13 A schematic diagram of the force analysis on a local surface of the airbag 200 provided in an embodiment of this application;

[0056] Figure 14 A schematic diagram of the force analysis of the airbag 200 after inflation, provided in an embodiment of this application;

[0057] Figure 15 A schematic diagram of the surface of another airbag 200 provided in an embodiment of this application;

[0058] Figure 16 A schematic diagram of the surface of an airbag 200 provided in an embodiment of this application;

[0059] Figure 17 A schematic diagram of the surface of another airbag 200 provided in an embodiment of this application;

[0060] Figure 18 A schematic diagram of the surface of another airbag 200 provided in an embodiment of this application;

[0061] Figure 19 A schematic flowchart illustrating a blood pressure measurement method provided in an embodiment of this application;

[0062] Figure 20 This is a schematic diagram of the structure of the blood pressure measuring device 500 provided in the embodiments of this application. Detailed Implementation

[0063] The technical solutions in the embodiments of this application will be clearly and thoroughly described below with reference to the accompanying drawings.

[0064] The term "user interface (UI)" used in the following embodiments of this application refers to the medium interface through which an application or operating system interacts and exchanges information with the user. It realizes the conversion between the internal form of information and the form that the user can accept. The user interface is source code written in a specific computer language such as Java or Extensible Markup Language (XML). The interface source code is parsed and rendered on the electronic device, ultimately presenting content that the user can recognize. A common form of user interface is the graphical user interface (GUI), which refers to a user interface related to computer operation displayed graphically. It can be visible interface elements such as text, icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and widgets displayed on the screen of an electronic device.

[0065] This application provides a wearable device including an airbag for applying pressure to the user's skin to block blood vessels. The airbag may include a first airbag and a second airbag, with an air hole between the first and second airbags to allow airflow between them. When the wearable device is worn on the human body, the first airbag is located between the second airbag and the human skin, and the area of ​​the first airbag projected onto the human skin is smaller than the area of ​​the second airbag projected onto the human skin. The wearable device can calculate blood pressure using pressure signals collected during the process of the airbag inflating and compressing blood vessels.

[0066] In this way, when the wearable device measures blood pressure, the first and second airbags can be inflated. The second airbag ensures the overall expansion volume and stability, while the first airbag can contact the skin and block blood vessels. The multi-layered airbag design allows the airbags to provide sufficient pressure when inflated to block blood vessels and complete the blood pressure measurement. Moreover, compared to the large-sized airbags currently on the market, the first airbag has a smaller contact area with the skin, has good breathability, and effectively improves the user's comfort when measuring blood pressure.

[0067] This application embodiment also provides another wearable device, which includes a wearing body, a portion of which includes a cavity, wherein the portion including the cavity forms an airbag, the airbag containing a filler for providing support for the airbag and / or for not hindering the airbag from expanding or for assisting the airbag from expanding; wherein the wearable device can use the pressure signal collected during the process of the airbag expanding and compressing blood vessels to calculate blood pressure values.

[0068] The wearable element can be used to attach the wearable device to the human body. For example, if the wearable device is a watch, then the wearable element is the watch strap.

[0069] The filler provides internal support for the airbag, preventing it from collapsing due to the internal cavity when it is not inflated. In addition, the filler does not hinder or assist the airbag's expansion when the airbag strap inflates, allowing the airbag strap to provide sufficient pressure to block blood vessels during expansion.

[0070] In this way, when the wearable device is not measuring blood pressure, the airbag appears no different from the main body without a cavity. When the wearable device measures blood pressure, the airbag can be inflated to block blood vessels. Furthermore, since the airbag is only part of the main body, its contact area with the skin is small when inflated, effectively improving the user's comfort when measuring blood pressure.

[0071] The wearable device provided in the embodiments of this application is described in detail below.

[0072] Figure 1 This is a schematic diagram of the hardware structure of the electronic device 100 provided in an embodiment of this application.

[0073] Electronic device 100 may be a mobile phone, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, ultra-mobile personal computer (UMPC), netbook, as well as cellular phone, personal digital assistant (PDA), augmented reality (AR) device, virtual reality (VR) device, artificial intelligence (AI) device, wearable device, in-vehicle device, smart home device and / or smart city device. The embodiments of this application do not impose any special restrictions on the specific type of electronic device.

[0074] Preferably, in the embodiments of this application, the electronic device 100 may refer to wearable devices such as watches, bracelets, wrist blood pressure monitors, arm blood pressure monitors, or rings.

[0075] Electronic device 100 may include a processor 110, internal memory 121, charging management module 140, power management module 141, battery 142, sensor module 180, and display screen 194, etc. Optionally, electronic device 100 may also include one or more of the following: wireless communication module 160, audio module 170, buttons 190, motor 191, indicator 192, etc. The audio module 170 may include one or more of the following: speaker 170A, receiver 170B, and microphone 170C. The sensor module 180 may include touch sensor 180A, barometric pressure sensor 180B, pressure sensor 180C, etc.

[0076] Processor 110 may include one or more processing units, such as application processors (APs), modem processors, graphics processing units (GPUs), image signal processors (ISPs), controllers, video codecs, digital signal processors (DSPs), baseband processors, and / or neural network processing units (NPUs). These different processing units may be independent devices or integrated into one or more processors.

[0077] In some implementations, the processor 110 can control the inflation and deflation of the airbag during blood pressure measurement, collect pressure signals transmitted from the user's blood vessels during the inflation or deflation of the airbag, and calculate the user's blood pressure value using the pressure signals.

[0078] The controller can generate operation control signals based on the instruction opcode and timing signals to complete the control of instruction fetching and execution.

[0079] The processor 110 may also include a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. This memory can store instructions or data that the processor 110 has just used or that are used repeatedly. If the processor 110 needs to use the instruction or data again, it can retrieve it directly from the memory. This avoids repeated accesses, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0080] In some embodiments, the processor 110 may include one or more interfaces. 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.

[0081] The charging management module 140 receives charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 can receive charging input from a wired charger. In some wireless charging embodiments, the charging management module 140 can receive wireless charging input through the wireless charging coil of the electronic device 100. While charging the battery 142, the charging management module 140 can also supply power to the electronic device through the power management module 141.

[0082] The power management module 141 connects the battery 142, the charging management module 140, and the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140, providing power to the processor 110, internal memory 121, display screen 194, and wireless communication module 160, etc. The power management module 141 can also monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage current, impedance). In some other embodiments, the power management module 141 may also be located within the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be located in the same device.

[0083] The wireless communication module 160 can provide solutions for wireless communication applied to the electronic device 100, including wireless local area networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), NearLink, and intrabody communication (IBC). For example, when two electronic devices communicate using an intrabody communication scheme, both electronic devices have at least one electrode that contacts the skin, and the two electronic devices send and receive information through the human body via this skin-contact electrode. The wireless communication module 160 can be one or more devices integrating at least one communication processing module.

[0084] Electronic device 100 implements display functions through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, connected to the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations and for graphics rendering. Processor 110 may include one or more GPUs, which execute program instructions to generate or modify display information.

[0085] Display screen 194 is used to display images, videos, etc. Display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), or it can be manufactured using organic light-emitting diodes (OLEDs), active-matrix organic light-emitting diodes (AMOLEDs), flexible light-emitting diodes (FLEDs), minimized LEDs, microLEDs, micro-OLEDs, quantum dot light-emitting diodes (QLEDs), etc. In some embodiments, electronic device 100 may include one or N displays 194, where N is a positive integer greater than 1.

[0086] In some implementations, the display screen 194 may be used to display the blood pressure value calculated by the electronic device 100, as well as a user interface related to blood pressure, etc.

[0087] Internal memory 121 may include one or more random access memory (RAM) and one or more non-volatile memory (NVM). The RAM can be directly read and written by the processor 110 and can be used to store executable programs (e.g., machine instructions) of the operating system or other running programs, as well as user and application data. The NVM can also store executable programs and user and application data, and can be pre-loaded into the RAM for direct read and write operations by the processor 110.

[0088] In some embodiments, the internal memory 121 may be used to store pressure signals acquired by the electronic device 100 during blood pressure measurement, as well as blood pressure values ​​calculated by the electronic device 100, etc.

[0089] Electronic device 100 can implement audio functions, such as music playback and recording, through audio module 170, speaker 170A, receiver 170B, microphone 170C, and application processor.

[0090] The audio module 170 is used to convert digital audio information into analog audio signals for output, and also to convert analog audio input into digital audio signals. The audio module 170 can also be used for encoding and decoding audio signals. In some embodiments, the audio module 170 may be located in the processor 110, or some functional modules of the audio module 170 may be located in the processor 110.

[0091] The speaker 170A, also known as a "loudspeaker," is used to convert audio electrical signals into sound signals. The electronic device 100 can listen to music or make hands-free calls through the speaker 170A.

[0092] The receiver 170B, also known as the "earpiece," is used to convert audio electrical signals into sound signals. When the electronic device 100 answers a telephone call or voice message, the receiver 170B can be brought close to the ear to listen to the voice.

[0093] Microphone 170C, also known as a "microphone" or "voice transducer," is used to convert sound signals into electrical signals. When making a phone call or sending a voice message, the user can speak by bringing their mouth close to microphone 170C, inputting the sound signal into microphone 170C. Electronic device 100 may have at least one microphone 170C. In some embodiments, electronic device 100 may have two microphones 170C, which, in addition to collecting sound signals, can also perform noise reduction. In other embodiments, electronic device 100 may also have three, four, or more microphones 170C, which can collect sound signals, reduce noise, identify the sound source, and perform directional recording, etc.

[0094] Touch sensor 180A, also known as a "touch device," can be disposed on display screen 194. The touch sensor 180A and display screen 194 together form a touchscreen, also known as a "touchscreen." Touch sensor 180A is used to detect touch operations applied to or near it. The touch sensor can transmit the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through display screen 194. In other embodiments, touch sensor 180A may also be disposed on the surface of electronic device 100, in a different location than display screen 194.

[0095] The pressure sensor 180B is used to measure air pressure. In some embodiments of this application, the electronic device 100 can measure the air pressure in the airbag 200 through the pressure sensor 180B to obtain a pressure signal inside the airbag 200. Exemplarily, a portion of the pressure sensor 180B may be located inside the airbag 200 for sensing the air pressure of the airbag 200.

[0096] It is understood that in other embodiments of this application, the air pressure sensor may also be referred to as a pressure sensor, and this application does not limit the name.

[0097] Pressure sensor 180C is used to sense pressure signals and can convert the pressure signals into electrical signals. In some embodiments, pressure sensor 180C may be disposed on display screen 194. There are many types of pressure sensors 180C, such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors. A capacitive pressure sensor may include at least two parallel plates with conductive material. When a force is applied to pressure sensor 180C, the capacitance between the electrodes changes. Electronic device 100 determines the intensity of the pressure based on the change in capacitance.

[0098] In some embodiments of this application, the pressure sensor 180C may be disposed on the side of the airbag 200 closer to the body. Thus, after the airbag inflates, the pressure sensor 180C can be used to collect pressure signals transmitted from the user's blood vessels under external pressure. In some embodiments, the pressure sensor 180C may be a thin-film sensor, thereby improving the user's comfort when wearing the electronic device 100.

[0099] Buttons 190 include a power button, volume buttons, etc. Buttons 190 can be mechanical buttons or touch-sensitive buttons. Electronic device 100 can receive button input and generate key signal inputs related to user settings and function control of electronic device 100.

[0100] Motor 191 can generate vibration alerts. Motor 191 can be used for incoming call vibration alerts or for touch vibration feedback. For example, different vibration feedback effects can correspond to touch operations performed on different applications (such as taking photos, playing audio, etc.). Motor 191 can also correspond to different vibration feedback effects for touch operations performed on different areas of the display screen 194. Different application scenarios (such as time reminders, receiving messages, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also be customized.

[0101] Indicator 192 can be an indicator light, used to indicate charging status, power changes, or to indicate messages, missed calls, notifications, etc.

[0102] The airbag 200 can be used to compress a user's blood vessels. For example, the airbag 200 can be inflated and deflated by an air pump.

[0103] This application provides two types of airbags 200. One type of airbag 200 includes multiple layers of airbags, while the other type of airbag 200 is located inside the wearer of the electronic device 100, so that there is a cavity inside the wearer. In this type, the airbag 200 is equivalent to a part of the wearer.

[0104] The wearable body can be used to wear the electronic device 100 on the human body. For example, if the electronic device 100 is an arm blood pressure monitor, the wearable body can refer to the cuff; if the electronic device 100 is a watch, the wearable body can refer to the watch strap.

[0105] For a detailed description of these two types of airbags, please refer to the following content, which will not be elaborated here.

[0106] In some embodiments, the sensor module 180 of the electronic device 100 may further include one or more of the following sensors: an accelerometer, a temperature sensor, a gyroscope, etc.

[0107] An accelerometer can detect the magnitude of acceleration of an electronic device 100 in various directions (typically three axes). When the electronic device 100 is stationary, it can detect the magnitude and direction of gravity. It can also be used to identify the posture of the electronic device and is applied to applications such as screen orientation switching and pedometers.

[0108] Temperature sensors can be used to measure a user's body temperature or the temperature of the user's environment.

[0109] A gyroscope sensor can be used to determine the motion attitude of an electronic device 100. In some embodiments, the angular velocity of the electronic device 100 about three axes (i.e., the x, y, and z axes) can be determined by the gyroscope sensor.

[0110] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device 100. In other embodiments of this application, the electronic device 100 may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0111] The following describes the airbag 200, which has a multi-layered airbag structure.

[0112] In some embodiments of this application, the airbag 200 may include multiple layers of airbags, which may be divided into an expansion layer and a test layer. The size of the airbag in the test layer may be smaller than that in the expansion layer. For example, when the airbag is worn on the human body, the area of ​​the test layer airbag projected onto the skin is smaller than the area of ​​the expansion layer airbag projected onto the skin. The expansion layer airbag is used to ensure the overall expansion volume and stability of the airbag during expansion, while the test layer airbag is used to block blood vessels, ensuring that the airbag transmits uniform pressure on the contact surface with the skin.

[0113] For example, the airbag of the expansion layer may include one or more layers, and the airbag of the test layer may also include one or more layers. Preferably, the airbag of the test layer may include one layer.

[0114] For example, Figure 2 This is a schematic diagram of the structure of a multi-layer airbag provided in an embodiment of this application.

[0115] in, Figure 2 (a) and (b) are schematic diagrams of the structures of two multi-layer airbags provided in the embodiments of this application.

[0116] like Figure 2 As shown in (a), both the expansion layer and the test layer can contain an airbag.

[0117] like Figure 2 As shown in (b), the expansion layer can contain two airbags, and the test layer can contain one airbag.

[0118] Furthermore, the electronic device 100 can be a wearable device such as a watch, bracelet, wrist blood pressure monitor, arm blood pressure monitor, or ring. In some embodiments of this application, the electronic device 100 can be a wearable device worn on the user's wrist, such as a watch.

[0119] For example, Figure 3 This is a schematic diagram of the electronic device 100 provided in this application being worn on a user's wrist.

[0120] like Figure 3 As shown, the electronic device 100 may include: an airbag 200, a watch strap 300, and a watch head 400. Wherein:

[0121] The meter header 400 can be the main body of the electronic device 100, and most of the hardware of the electronic device 100 can be integrated into the meter header 400, for example, as described above. Figure 1The processor 110, wireless communication module 160, audio module 170, button 190, display screen 194, etc. mentioned above can all be located on the meter head 400. For example, users can view the time, date, weather, etc. on the display screen 194 on the meter head 400. In this embodiment, the electronic device 100 can detect the user's touch operation on the display screen 194 on the meter head 400 or the physical operation of the button 190 to start blood pressure measurement and view the blood pressure value measured by the electronic device 100 on the display screen 194 on the meter head 400.

[0122] The watch strap 300 can be used to wear the electronic device 100 on a user's wrist. In some embodiments, the watch strap may also include a buckle for attaching and securing the strap, allowing for easy wearing and removal.

[0123] The airbag 200 can be located on the side of the watchband 300 near the user's wrist. Furthermore, the airbag 200 can be positioned at a specific location on the watchband 300 so that when the electronic device 100 is worn on the user's wrist, the airbag 200 faces the detection target (e.g., the radial artery) on the user's wrist. Additionally, a pressure sensor 180C on the electronic device 100 can be located on the side of the airbag 200 facing the user's wrist. Thus, when the airbag 200 inflates and compresses the radial artery, the pressure sensor 180C can detect the pressure signal transmitted by the radial artery under external pressure.

[0124] Understandable, Figure 3 200 airbags in the middle Figure 2 Taking the double-layer airbag shown in (a) as an example, in other embodiments of this application, the number of airbag layers in the electronic device 100 may be three or other, and this application does not limit this.

[0125] Furthermore, in order to ensure that the airbag 200 can apply pressure sufficient to block the user's blood vessels after inflation, the structure of the airbag 200 in this embodiment of the application has certain constraints.

[0126] The following section uses airbag 200, which has a double-layer airbag structure, as an example to describe in detail some of the structural constraint designs of airbag 200.

[0127] Figure 4 This is a schematic diagram of the structure of the airbag 200 provided in the embodiment of this application.

[0128] The airbag 200 may include a first airbag 201 and a second airbag 202. The first airbag 201 is an airbag for the test layer, and the second airbag 202 is an airbag for the expansion layer. A pressure sensor 180C is provided on the side of the first airbag 201 facing away from the second airbag 202.

[0129] like Figure 4 As shown, the length of the first airbag 201 is a, the length of the second airbag 202 is b, the distance from the first side of the first airbag 201 to the second side of the second airbag 202 is x, and the distance from the third side of the first airbag 201 to the fourth side of the second airbag 202 is y. The first side is located on the first side of the first airbag 201, the second side is also located on the first side of the second airbag 202, the third side is located on the second side of the first airbag 201, and the fourth side is also located on the second side of the second airbag 202. The first side refers to the side away from the meter head 400, and the second side refers to the side closer to the meter head 400.

[0130] For example, in order to ensure that the airbag 200 can face the radial artery on the wrist when the electronic device 100 is worn on the wrist, the airbag 200 should be located at a designated position on the watch band 300. For example, the distance from the third side of the first airbag 201 to the watch head 400 can be between [15mm and 25mm].

[0131] To ensure that the airbag 200 can cover the radial artery of as many people as possible when wearing the electronic device 100, the length 'a' of the first airbag 201 should be greater than a preset value (e.g., a first threshold), for example, a ≥ 20 mm. This preset value can be determined by developers through simulation analysis of the airbag position after summarizing the radial artery location of the general population by statistically analyzing the arterial distribution of a large number of population samples.

[0132] In addition, in order to ensure that the thrust applied to the first airbag 201 after the second airbag 202 expands can enable the first airbag 201 to apply a uniform and concentrated force to the user's radial artery after expansion, the distance x from the first side of the first airbag 201 to the first side of the second airbag 202 should be within a preset range (e.g., a first range), for example, x = 3 to 7 mm.

[0133] In some embodiments, the fourth side of the second airbag 202 can be connected to the meter head 400. In this case, the airbag 200 can be directly connected to the meter head 400, which allows the airbag 200 to expand to a larger overall volume when inflated, which is more conducive to the overall compression of blood vessels by the airbag 200.

[0134] In some other embodiments, the fourth side of the second airbag 202 may not be connected to the meter head 400. In this case, the second airbag 202 can be connected to the meter head 400 through the watch strap 300. In this way, the length of the second airbag 202 is shorter, making the overall size of the airbag 200 smaller, which can improve the user's comfort when measuring blood pressure.

[0135] Figure 5 Provided for the embodiments of this application Figure 4The diagram shows the structure of the airbag 200 when viewed from the perspective 1 shown.

[0136] like Figure 5 As shown, the pressure sensor 180C has a length of u and a width of v, the first airbag 201 has a width of w, and the second airbag 202 has a width of q.

[0137] For example, the length a of the first airbag 201 is less than the length b of the second airbag 202, and the width w of the first airbag 201 is less than the width q of the second airbag 202. Thus, when the electronic device 100 is worn on the human body, the area of ​​the first airbag 201 projected onto the human skin is less than the area of ​​the second airbag 202 projected onto the human skin.

[0138] Optionally, the length u and width v of the pressure sensor 180C can be greater than a certain threshold, thereby ensuring that the pressure sensor 180C with a sufficiently large area can cover the radial artery of the wrist of the general population when measuring blood pressure. For example, u > 30 mm and v > 3 mm.

[0139] Additionally, it should be noted that, considering the pressure sensor 180C is disposed on the surface of the first airbag 201, the length 'a' of the first airbag 201 should be greater than the length 'u' of the pressure sensor 180C, and the width 'w' of the first airbag 201 should be greater than the width 'v' of the pressure sensor 180C, thereby ensuring that the pressure sensor 180C can completely conform to the surface of the first airbag 201. In this case, priority should be given to ensuring that the length of the first airbag 201 is greater than the length of the pressure sensor 180C. For example, if the length of the pressure sensor 180C is equal to 35mm, then the length of the first airbag 201 should be greater than 35mm.

[0140] To ensure the effectiveness of the pressure sensor 180C, when the airbag 200 inflates, the effective contact width between the first airbag 201 and the user's skin must be greater than a certain threshold (e.g., a third threshold). The effective contact width refers to the width of the area where the first airbag 201 contacts the user's skin after inflating, and the pressure applied by the airbag in this area must be greater than the threshold. In other words, to ensure that the pressure sensor 180C can collect accurate pressure signals when the airbag 200 inflates, the contact area between the first airbag 201 and the user's skin must reach a certain value, and the first airbag 201 must apply sufficiently large pressure to the user's skin within this contact area.

[0141] Therefore, the first airbag 201 and the pressure sensor 180C should have any one or more of the following associations:

[0142] 1) The size of the first airbag 201 should be larger than the size of the pressure sensor 180C. This can mean that the distance between the edge of the first airbag 201 and the edge of the pressure sensor 180C is greater than a certain preset value (e.g., a second threshold). Specifically, this may include the distances between the top edge of the first airbag 201 and the top edge of the pressure sensor 180C, the distances between the bottom edge of the first airbag 201 and the bottom edge of the pressure sensor 180C, the distances between the left edge of the first airbag 201 and the left edge of the pressure sensor 180C, and the distances between the right edge of the first airbag 201 and the right edge of the pressure sensor 180C, all of which are greater than a certain preset value. For example, this preset value is 2 mm.

[0143] 2) The width w of the first airbag 201 and the width v of the pressure sensor 180C satisfy: v / w < i;

[0144] Where i represents the force transmission attenuation coefficient of the airbag. i is related to the structure of the airbag. For example, the wider the width q of the second airbag 202, the larger i is. For example, for an airbag 200 with a width q of 30mm, i≈0.7.

[0145] In this embodiment, the width w of the first airbag 201 and the width v of the pressure sensor 180C satisfy v / w < i, which enables the pressure sensor 180C to work within the effective pressure area between the airbag 200 and the human skin, thereby ensuring the normal operation of the pressure sensor 180C.

[0146] In some embodiments, in the multi-layered airbags of the airbag 200, two adjacent layers of airbags can share the same air vent. In this way, the electronic device 100 only needs to inflate one or a few airbags in the multi-layered airbags, and the airbags can be quickly inflated through the shared air vent.

[0147] The number and location of the air holes can be related to the overall size and shape of the airbag. This application does not limit the number and location of the air holes.

[0148] For example, Figure 6 by Figure 4 and Figure 5 Taking the airbag 200 as an example, a schematic diagram of the air holes on the airbag 200 is shown.

[0149] like Figure 6As shown, the airbag 200 includes an air hole 203 and an air hole 204. The air holes 203 and 204 are located between the first airbag 201 and the second airbag 202, and can be used to allow airflow between the first airbag 201 and the second airbag 202. If the electronic device 100 connects an air pump to the second airbag 202, when the electronic device 100 inflates the second airbag 202 using the air pump, gas can enter the first airbag 201 through the air holes 203 and 204, thus inflating the first airbag 201.

[0150] A connection area is provided between the first airbag 201 and the second airbag 202. This connection area can be used to fix the first airbag 201 and the second airbag 202. The air holes between the first airbag 201 and the second airbag 202, such as air holes 203 and 204, can be set in the middle of the connection area.

[0151] For example, the connecting area may be superimposed with a layer of skin of the first airbag 201 and a layer of skin of the second airbag 202. In other words, the connecting area may contain two layers of skin, one layer of skin of the first airbag 201 and one layer of skin of the second airbag 202. Alternatively, the connecting layer may contain only one layer of skin, which is shared by the first airbag 201 and the second airbag 202.

[0152] like Figure 6 As shown in (a), the connecting area can be symmetrical about the midline of the air vents 203 and 204. Specifically, the distance from the left edge of the connecting area to the left edge of the first airbag 201 and the distance from the right edge of the connecting area to the right edge of the first airbag 201 are a1, the distance from the left edge of the connecting area to the left edge of the air vent 203 and the distance from the right edge of the connecting area to the right edge of the air vent 204 are a4, and the distance between the air vents 203 and 204, i.e., the interval between the air vents, is a3.

[0153] It is understandable that the connecting area may not be symmetrical about the center line of the air vents 203 and 204. In this case, the distance from the left side of the connecting area to the leftmost side of the first airbag 201 may be different from the distance from the right side of the connecting area to the left and right sides of the first airbag 201. The distance from the left side of the connecting area to the left side of the air vent 203 and the distance from the right side of the connecting area to the right side of the air vent 204 may also be different.

[0154] Figure 6 (b) in the middle is Figure 6 The cross-sectional view of one embodiment of the airbag 200 shown in (a) at section line AA.

[0155] in, Figure 6The shaded area shown in (b) is the connection area between the first airbag 201 and the second airbag 202. The airbag 200 can be symmetrical about the line connecting the center points of the air holes 203 and 204 as the axis of symmetry. Specifically, the distance from the upper edge of the second airbag 202 to the upper edge of the connection area and the distance from the lower edge of the second airbag 202 to the lower edge of the connection area are a2, the distance from the lower edge of the air hole 203 or 204 to the lower edge of the connection area and the distance from the upper edge of the air hole 203 or 204 to the upper edge of the connection area are a5, the length of the air hole (air hole 203, air hole 204) is a6, the width of the air hole is a7, the distance from the upper edge of the connection area to the upper edge of the first airbag 201 and the distance from the lower edge of the connection area to the lower edge of the first airbag 201 are a8.

[0156] It is understandable that the airbag 200 may not be symmetrical about the line connecting the center points of the air holes 203 and 204. In this case, the distance from the upper edge of the second airbag 202 to the upper edge of the connecting area may be different from the distance from the lower edge of the second airbag 202 to the lower edge of the connecting area. Similarly, the distance from the lower edge of the air hole 203 or 204 to the lower edge of the connecting area may be different from the distance from the upper edge of the air hole 203 or 204 to the upper edge of the connecting area.

[0157] In this embodiment of the application, the above a1-a8 should meet the preset requirements so that the effective pressure width between the airbag and the user's skin can be greater than the threshold, thereby ensuring that the airbag can apply enough pressure to the user to block blood vessels and realize the measurement of blood pressure.

[0158] For example, the edge of the connection area between the airbags can be greater than a certain threshold from the edge of the airbag 200, such as a1, a2 ≥ 7mm. This ensures that there is a wide range of motion between the airbags 200, allowing the airbags 200 to reach a high inflation height.

[0159] For example, the size of the connection area can be greater than a certain threshold, such as a4 ≥ 1 mm. This ensures the tightness of the connection between the first airbag 201 and the second airbag 202, and also ensures that when the airbag 200 inflates, the second airbag 202 can provide a large and stable thrust to the first airbag 201.

[0160] For example, the spacing a3 between the pores should be within a specified range, for example, 4mm≤a3≤10mm.

[0161] For example, the spacing a3 between pores and the length a6 of the pores can be subject to the following constraint: 1≤a6 / a3≤8.

[0162] For example, the width a7 of the air hole and the width q of the second airbag 202 may be subject to the following constraint: a7 / q≥0.1.

[0163] For example, the connection area between the airbags can be located at a specified position on the first airbag 201. For example, the ratio of the distance a1 from the left edge (or right edge) of the connection area to the left edge (or right edge) of the first airbag 201 to the distance a6 from the upper edge (or lower edge) of the connection area to the upper edge (or lower edge) of the first airbag 201 can be within a specified range, such as 0.8≤a1 / a6≤1.2.

[0164] It is important to note that Figure 6 The airbag 200 shown is exemplified by having two air holes. In other embodiments of this application, the airbag 200 may contain more or fewer air holes. This application does not limit this. Exemplarily, the number of air holes may be positively correlated with the length of the first airbag 201, that is, the longer the length 'a' of the first airbag 201, the more air holes there are; the shorter the length of the first airbag 201, the fewer air holes there are. Furthermore, Figure 6 In the airbag 200 shown, the different air holes are of the same size (e.g., width, length). In other embodiments of this application, the different air holes contained in the airbag 200 may be of different sizes.

[0165] In summary, this application provides a wearable device with a multi-layered airbag structure. This device can use multiple airbags to compress blood vessels. The multi-layered airbags can provide greater pressure despite their small size, ensuring the accuracy of blood pressure measurement. Furthermore, the multi-layered airbags can be adapted to people with different wrist sizes, enabling accurate blood pressure measurement for users with different wrist and hand sizes.

[0166] The following describes the airbag morphology as an airbag 200 located inside the wearer.

[0167] In some embodiments of this application, the airbag 200 may be located inside the wearer of the electronic device 100, which creates a cavity inside the wearer of the electronic device 100. The electronic device 100 can inflate the wearer by inflating it, thereby compressing the user's blood vessels.

[0168] Furthermore, the electronic device 100 can be a wearable device such as a watch, bracelet, wrist blood pressure monitor, arm blood pressure monitor, or ring. In some embodiments of this application, the electronic device 100 can be a wearable device worn on a user's wrist, such as a watch. The wearing body can refer to the watch strap, which can be used to enable the electronic device 100 to be worn on the user's wrist. In this case, the watch strap containing an airbag can also be referred to as an airbag watch strap.

[0169] For example, Figure 7 Taking the watch strap as an example, a comparative schematic diagram is shown between the airbag-type watch strap provided in the embodiments of this application and a common watch strap containing an airbag.

[0170] in, Figure 7 (a) in the diagram is a typical watch strap that includes an airbag. Figure 7 (b) is a schematic diagram of the airbag watch strap provided in the embodiment of this application.

[0171] like Figure 7 As shown in (a), the airbag and the watch band are two separate components. The airbag is connected to one side of the watch band. When measuring blood pressure, the airbag inflates to compress the blood vessels.

[0172] like Figure 7 As shown in (b), the airbag watchband is characterized by an airbag located inside the watchband, which creates a cavity inside the watchband. When measuring blood pressure, the watchband can be inflated by inflating the inside of the watchband, thereby compressing the blood vessels.

[0173] For example, Figure 8 This is a schematic diagram of the electronic device 100 provided in this application being worn on a user's wrist.

[0174] like Figure 8 As shown, the electronic device 100 may include: a watch strap 300 and a watch head 400. Wherein:

[0175] The meter header 400 can be the main body of the electronic device 100, and most of the hardware of the electronic device 100 can be integrated into the meter header 400, for example, as described above. Figure 1 The processor 110, wireless communication module 160, audio module 170, button 190, display screen 194, etc. mentioned above can all be located on the meter head 400. For example, users can view the time, date, weather, etc. on the display screen 194 on the meter head 400. In this embodiment, the electronic device 100 can detect the user's touch operation on the display screen 194 on the meter head 400 or the physical operation of the button 190 to start blood pressure measurement and view the blood pressure value measured by the electronic device 100 on the display screen 194 on the meter head 400.

[0176] The watch strap 300 can be used to secure the electronic device 100 to a user's wrist. In some embodiments, the watch strap may also include a buckle for attaching and securing the watch strap, allowing for easy wearing and removal. The watch strap 300 includes: an airbag 200, a standard watch strap 301 connected to the left side of the airbag 200, and a standard watch strap 302 connected to the right side of the airbag 200.

[0177] In this context, ordinary watch straps 301 and 302 refer to watch straps without internal cavities. In this embodiment, the airbag 200 can also be referred to as an airbag-infused watch strap. Further, the airbag 200 can be located at a designated position within the watch strap 300, so that when the electronic device 100 is worn on the user's wrist, the inflated airbag 200 can compress a detection target (e.g., the radial artery) on the user's wrist. For example, the distance between the side of the airbag 200 near the watch head 400 and the watch head 400 can be between [15mm, 25mm]. Additionally, the pressure sensor 180C on the electronic device 100 can be located on the side of the airbag 200 facing the user's wrist. Thus, after the airbag 200 inflates and compresses the radial artery, the pressure sensor 180C can detect the pressure signal transmitted by the radial artery under external pressure.

[0178] In some embodiments, the electronic device 100 may also omit the ordinary watch strap 301 and / or ordinary watch strap 302, so that the left side of the airbag 200 can be directly connected to the left side of the watch head 400, and / or the right side of the airbag 200 can be directly connected to the right side of the watch head 400.

[0179] In some embodiments, the watch strap 300 may also include multiple airbags 200, which can work together to compress blood vessels by cooperating or squeezing each other.

[0180] Furthermore, in order to ensure that the airbag 200 applies sufficient pressure to block the user's blood vessels after inflation, the present application embodiment has certain constraints on the structure of the airbag 200.

[0181] Specifically, the airbag 200 provided in this application embodiment has one or more of the following designs:

[0182] 1) The cavity of the airbag 200 contains filler.

[0183] The filler can be used to provide internal support for the airbag 200, and / or to not impede the inflation of the airbag 200 or to assist the inflation of the airbag 200 when it inflates.

[0184] Specifically, the filler can assist the inflation of the airbag 200 when it inflates. This can be achieved by the filler deforming according to changes in the environment, such as changes in temperature, pressure, or applied external force, and the direction of deformation is the direction of inflation of the airbag 200. Thus, when the airbag 200 inflates and compresses the blood vessels, the filler can deform along the direction of compression of the blood vessels, thereby assisting the inflation of the airbag 200.

[0185] For example, the filler may be an elastic material (e.g., rubber) or a variable material (e.g., shape memory alloy).

[0186] For example, the structure of the filler can be grid-like, honeycomb-like, column-like, etc.

[0187] For example, Figure 9 This is a schematic diagram illustrating how the filling material provided in this embodiment of the application assists in the inflation of the airbag 200.

[0188] in, Figure 9 (a) shows a schematic diagram of the interior of the cavity before the airbag 200 is inflated. Figure 9 (b) shows a schematic diagram of the cavity inside the airbag 200 during its inflation process.

[0189] exist Figure 9 In the schematic diagram shown, the filler can be presented as a retractable structure composed of multiple scissor-like intersecting units connected end to end.

[0190] Combination Figure 9 (a) in the middle, from Figure 9 As can be seen from (b), if the airbag 200 inflates, the increase in gas inside the cavity will result in an additional compressive force F1 directed towards the filler. Under the action of the compressive force F1, the filler will extend in the direction of force F2, thereby providing assistance for the inflation of the airbag 200.

[0191] Understandably, the filler could also be a spring made of shape memory alloy, which allows the spring to expand when the temperature rises and contract when the temperature falls. In this way, the filler can provide assistance when the airbag 200 inflates under temperature changes.

[0192] For example, Figure 10 This is a cross-sectional schematic diagram of the airbag 200 provided in an embodiment of this application.

[0193] in, Figure 10 Image (a) shows a cross-sectional schematic diagram of the cavity of the airbag 200 without any filler. Figure 10 (b) shows a cross-sectional schematic diagram of the cavity of the airbag 200 containing a mesh-like filling material. Figure 10 (c) shows a cross-sectional schematic diagram of the cavity of the airbag 200 containing columnar filler.

[0194] contrast Figure 10 (a) and Figure 10As can be seen from (b) and (c), compared to an airbag with no filling material inside the cavity, an airbag 200 with filling material can provide internal support. When the airbag 200 is not inflated, it will not collapse due to the presence of an internal cavity, which makes the watch strap more aesthetically pleasing. In addition, when the airbag 200 inflates, the filling material inside the cavity can not hinder the inflation of the airbag 200, or the filling material inside the cavity can promote the inflation of the airbag 200 under the interaction of forces, accelerate the inflation speed of the airbag 200, and provide assistance for the inflated airbag 200.

[0195] In some implementations, the material and structure of the filler can be determined by simulation based on the effective pressure that the airbag 200 needs to meet after inflation.

[0196] 2) The surface of the airbag 200 has one or more of the following designs: pattern design, material design, thickness design, etc.

[0197] Pattern design refers to processing patterns on the surface of the airbag 200, so that the surface of the airbag 200 contains inclined surfaces with different tilt angles at different locations. This can be achieved by adding material to different locations on the surface of the airbag 200, and / or removing material from different locations on the surface of the airbag 200. For example, nanotechnology processes such as nanoimprinting, spin coating, and etching can be used to process the patterns on the surface of the airbag 200.

[0198] For example, Figure 11 This is a schematic diagram of the surface of an airbag 200 provided in an embodiment of this application. Figure 11 The image shows a magnified schematic diagram of a portion of the surface of the airbag 200. From Figure 11 It can be seen that the surface of the airbag 200 may have repeating patterns.

[0199] further, Figure 12 This is a schematic cross-sectional view of the airbag 200 provided in an embodiment of this application.

[0200] in, Figure 12 (a) shows a schematic cross-sectional view of the surface of the airbag 200 when there is no pattern on the surface. Figure 12 (b) shows a schematic cross-sectional view of the surface of the airbag 200 when a pattern exists on the surface.

[0201] Figure 13 A schematic diagram of the force analysis of a local surface of the airbag 200 provided in an embodiment of this application.

[0202] Because the surface of the airbag 200 has a pattern, it is not a smooth plane, but rather contains inclined surfaces with different angles at different locations. Specifically, as shown... Figure 13 As shown, the surface of the airbag 200 includes inclined surface P1, inclined surface P2, and inclined surface P3. During the inflation of the airbag 200, the outward thrust applied by inclined surface P1 is F3, the outward thrust applied by inclined surface P2 is F4, and the outward thrust applied by inclined surface P3 is F5.

[0203] from Figure 13 It can be seen that due to the pattern on the surface of the airbag 200, the airbag 200 contains inclined surfaces with different tilt angles at different positions, thereby changing the overall force direction of the surface of the airbag 200.

[0204] In this embodiment of the application, a specified pattern (e.g., a first pattern) can be designed on the surface of the airbag 200 so that the pressure exerted by the surface of the airbag 200 on the user's skin during the inflation process can be concentrated on the detection target (e.g., the radial artery), thereby achieving better blocking of the detection target and improving the accuracy of blood pressure measurement.

[0205] For example, Figure 14 This is a schematic diagram illustrating the force analysis of the airbag 200 after inflation, as provided in an embodiment of this application. From... Figure 14 As can be seen, due to the pattern on the surface of the airbag 200, the pressure applied outward from the surface of the airbag 200 during inflation (see...) Figure 14 The arrow in the image is pointed toward the radial artery on the user's wrist.

[0206] For example, Figure 15 A schematic diagram of the surface of another airbag 200 provided in an embodiment of this application.

[0207] like Figure 15 As shown, the surface of the airbag 200 can be designed with two symmetrical patterns, which can be composed of two concentric circles (see...). Figure 15 The white area in the image (the pattern) can be formed by cutting out a portion of material from the surface of the airbag 200, or by adding material to the surface of the airbag 200. When the airbag 200 inflates, the surface of the airbag 200 containing this pattern will generate a thrust toward the radial artery of the wrist under the thrust of different inclined surfaces.

[0208] Material design specifically refers to designing a variety of materials to form the surface of the airbag 200. Different materials can have different hardness. When the airbag 200 inflates, the pressure applied outward by the different materials is different. Therefore, by designing the materials contained in the surface of the airbag 200, as well as the position, shape and size of different materials on the strap, the outward thrust applied by the surface of the airbag 200 during inflation can be concentrated on the detection target, so as to achieve better blocking of the detection target and improve the accuracy of blood pressure measurement.

[0209] For example, the surface of the airbag 200 may include a first surface made of a first material and a second surface made of a second material, wherein the first material and the second material have different hardnesses. When the airbag 200 inflates, the pressure applied outward by the first surface and the second surface may be directed towards the radial artery on the user's wrist.

[0210] For example, Figure 16 This is a schematic diagram of the surface of an airbag 200 provided in an embodiment of this application.

[0211] like Figure 16 As shown, the surface of the airbag 200 can be made of two materials, including material 1 (see Figure 16 (dark areas in the text), Material 2 (see...) Figure 16 (The light-colored area in the image). Material 1 and Material 2 may have different hardnesses.

[0212] Understandable, Figure 16 These are merely illustrative examples and do not constitute a limitation on the embodiments of this application.

[0213] Specific parameters, such as the selection of materials, their location, shape, and size, can be determined through simulation.

[0214] For example, Figure 17 A schematic diagram of the surface of another airbag 200 provided in an embodiment of this application.

[0215] like Figure 17 As shown, the surface of the airbag 200 can be made of two materials, including material 3 (see Figure 17 (light-colored areas in the text), Material 4 (see...) Figure 17 (The dark area). Material 3 can be a soft material, and material 4 can be a hard material. In the specific implementation, when the airbag 200 inflates, because soft materials are more likely to deform under force, while hard materials are less likely to deform under force, when the airbag 200 inflates, the materials 4 surrounding the two sides of material 3 will provide a thrust biased towards material 3, making the force on the surface of the airbag 200 more concentrated when it inflates outward, and concentrated towards the radial artery on the user's wrist.

[0216] The thickness design specifically refers to the design of the thickness at different locations on the surface of the airbag 200. This is because, when the airbag inflates, the pressure applied outward by airbag surfaces of different thicknesses varies. Therefore, by designing the thickness at different locations on the surface of the airbag 200, the pressure applied outward by the surface of the airbag 200 during inflation can be concentrated on the detection target, thereby achieving better blocking of the detection target and improving the accuracy of blood pressure measurement.

[0217] For example, the surface of the airbag 200 may include a third surface with a first thickness and a fourth surface with a second thickness, the first and second thicknesses being different, and when the airbag 200 inflates, the pressure exerted outward by the third and fourth surfaces is directed toward the radial artery on the wrist.

[0218] For example, Figure 18 This is a schematic diagram of the surface of another airbag 200 provided in an embodiment of this application. Figure 18 (a) is a top view of the surface of the airbag 200. Figure 18 (b) is a cross-sectional schematic diagram of the surface of the airbag 200.

[0219] like Figure 18 As shown, the thickness of the surface of the airbag 200 can gradually increase along the left and right sides from the center point of the airbag 200. The surface of the airbag 200 can be composed of surface 1, surface 2, surface 3, surface 4, and surface 5, where the thickness of surface 3 is Q1, the thicknesses of surfaces 2 and 4 are Q2, and the thicknesses of surfaces 1 and 5 are Q3. In practice, when the airbag 200 inflates, because the surfaces of different thicknesses exert different outward pressures under strong inflation, the pressure exerted by the symmetrically thick surfaces is concentrated towards the radial artery on the wrist during airbag inflation.

[0220] The principle of thickness design is similar to that of pattern design, so it will not be elaborated here.

[0221] Furthermore, the aforementioned pattern design, material design, and thickness design not only ensure that when the airbag inflates, the pressure applied outward from the surface of the airbag points towards the radial artery on the wrist, but also ensure that the pressure applied outward from the surface of the airbag is greater than a threshold, guaranteeing that the airbag can provide sufficient pressure to compress the blood vessel and complete the measurement of blood pressure.

[0222] It can be seen that the above pattern design, material design and thickness design are all to change the magnitude and direction of the pressure exerted by the airbag on the user's skin after the airbag inflates, so as to achieve more accurate blood pressure measurement.

[0223] It is understood that the surface of the airbag 200 described in the above pattern design, material design and thickness design is merely an exemplary example and does not constitute a limitation on the embodiments of this application.

[0224] In addition, pattern design, material design, and thickness design can reduce the contact area between the watch strap and the skin, and increase ventilation or sweat wicking channels between the watch strap and the skin and fingertips, making the watch strap more breathable and improving the user's comfort when measuring blood pressure.

[0225] It is understood that, in another possible implementation, the surface of the airbag 200 may have one or more of the following: pattern design, material design, and thickness design. When the airbag 200 inflates, the surface of the airbag 200 forms an outward convex structure. This outward convex structure enables the outward thrust applied by the airbag 200 when it inflates to be concentrated towards the detection target, thereby achieving better blocking of the detection target and improving the accuracy of blood pressure measurement.

[0226] In other words, the pattern design, material design, or thickness design on the surface of the airbag 200 can form an outward convex structure on the surface of the airbag 200 when the airbag 200 is inflated. This outward convex structure can directly contact human skin. Compared to the entire surface of the airbag 200 contacting the skin, this outward convex structure can provide a more concentrated and directional thrust, thereby helping the airbag 200 to block the detection target.

[0227] Taking the material design of the airbag 200 surface as an example, since the materials are different at different locations, when the airbag 200 is inflated, the surface of the airbag 200 can form an outward convex structure. If the surface of the airbag 200 includes a surface made of soft material, the soft material may expand outward due to the compression of the gas. Then, the outward convex structure can be the protruding part formed by the soft material expanding outward due to the inflation of the airbag 200. This outward convex structure allows the thrust applied outward when the airbag 200 is inflated to be concentrated towards the detection target, so as to achieve better blocking of the detection target and improve the accuracy of blood pressure measurement.

[0228] It should be noted that the above-mentioned pattern design, material design and thickness design can also be applied to the surface of the multi-layer airbag provided in the embodiments of this application. For example, the surface of the first airbag 201 can have one or more of the pattern design, material design and thickness design. For another example, the surface of the second airbag 201 that is not covered by the first airbag 201 can also have one or more of the pattern design, material design and thickness design.

[0229] The process of measuring blood pressure using electronic device 100 is described in detail below.

[0230] Figure 19 This is a schematic flowchart of a blood pressure measurement method provided in an embodiment of this application.

[0231] S101. Electronic device 100 receives user input for measuring blood pressure.

[0232] Among them, electronic device 100 can be a wearable device worn on the user's body, such as a watch, bracelet, wrist blood pressure monitor, arm blood pressure monitor or ring, etc.

[0233] In this embodiment, the electronic device 100 includes an airbag. The airbag can be used to compress a user's blood vessels during blood pressure measurement.

[0234] In one embodiment, the airbag can be a multi-layered airbag, for example, the airbag may include a first airbag and a second airbag. An air vent may be included between the first and second airbags to allow airflow between them. When the wearable device is worn on the human body, the first airbag may be located between the second airbag and the human skin, and the area of ​​the first airbag projected onto the human skin is smaller than the area of ​​the second airbag projected onto the human skin.

[0235] For example, Figure 3 Taking the electronic device 100 shown as an example, the airbag can refer to... Figure 3 The airbag 200 shown, the first airbag can refer to Figure 4 The first airbag 201 shown, the second airbag can refer to Figure 4 The second airbag 202 is shown.

[0236] For a detailed description of the multi-layered airbags, please refer to the above. Figures 2-6 The details will not be repeated here.

[0237] In one embodiment, the electronic device 100 may include a wearable body for wearing the electronic device 100 on a human body, wherein a portion of the wearable body includes a cavity, the portion including the cavity forming an airbag, the airbag may include a filler for providing internal support for the airbag, and / or for not hindering the airbag from inflating or for assisting the airbag from inflating.

[0238] For example, with Figure 8 Taking the electronic device 100 shown as an example, the airbag can refer to... Figure 8 The airbag 200 shown can be referred to as the wearing body. Figure 8 The watch strap shown is 300.

[0239] For a detailed description of the airbag located within the wearer, please refer to the above. Figures 7-17 The details will not be repeated here.

[0240] For example, the user operation for measuring blood pressure can be a touch operation on the display screen of the electronic device 100 or a physical operation on the buttons on the electronic device 100. This application embodiment does not limit the form of the user operation.

[0241] It is understood that step S101 is an optional step, meaning that the electronic device 100 can also automatically start blood pressure measurement without user triggering. For example, the electronic device 100 can periodically measure blood pressure, so that the electronic device 100 can automatically start blood pressure measurement when the specified time is reached.

[0242] S102. Electronic device 100 controls the airbag to inflate and then deflate.

[0243] For example, the electronic device 100 can pressurize the airbag using an air pump to control the inflation of the airbag. The electronic device 100 can also stop inflation when the airbag pressure reaches a threshold.

[0244] The airbag can compress the user's blood vessels after inflation, and can block the user's blood vessels when the airbag stops pressurizing. In this embodiment, if the electronic device 100 is a watch or bracelet worn on the user's wrist, the airbag can compress the user's radial artery after inflation, and the electronic device 100 can analyze the user's blood pressure by the pressure pulse transmitted by the radial artery under external pressure.

[0245] For example, the electronic device 100 can be pressurized linearly, or it can be pressurized at an accelerated rate first, and then pressurized at a constant rate when the pressure reaches a certain value. This application embodiment does not limit the pressurization method of the electronic device 100.

[0246] S103. Electronic device 100 collects pressure signals inside the airbag during the inflation or deflation process of the airbag.

[0247] For example, the electronic device 100 may include a pressure sensor, which can acquire the pressure signal inside the airbag. Alternatively, the electronic device 100 may also determine the pressure signal inside the airbag based on the air flow rate during airbag inflation and based on the air flow rate during airbag deflation.

[0248] For a detailed description of the barometric pressure sensor, please refer to the above. Figure 1 The relevant content about the 180B barometric pressure sensor.

[0249] S104. Electronic device 100 collects pressure signals through pressure sensors on the airbag during the inflation or deflation of the airbag.

[0250] The electronic device 100 may have a pressure sensor installed on its airbag, and when the electronic device 100 is worn on the human body, the pressure sensor may be located on the side of the airbag close to the human skin.

[0251] For a detailed description of the pressure sensor, please refer to the above. Figure 1 The relevant content about the 180C pressure sensor.

[0252] It is understood that step S104 is an optional step, meaning that the electronic device 100 can use the pressure signal during the inflation process of the airbag to calculate the user's blood pressure value.

[0253] In this embodiment, the user's blood pressure value is calculated by using the pressure signal inside the airbag and the pressure signal collected by the pressure sensor on the airbag. This makes the collected pressure signal more complete and richer, and thus makes the blood pressure measurement result more accurate.

[0254] S105. Electronic device 100 calculates the user's blood pressure value based on the collected pressure signal.

[0255] For example, the electronic device 100 can analyze the user's blood pressure by the relationship between the fluctuation amplitude of the pulse wave signal reflected by the user's blood vessels under external pressure and the airbag pressure.

[0256] In one embodiment, the electronic device 100 can measure blood pressure using oscillometric methods. When the electronic device 100 is worn on the user's wrist, it can gradually restart the airbag to pressurize and block the blood vessels in the wrist area where the user is wearing the electronic device 100. Afterward, the air pump controls the airbag to immediately deflate, stopping the blockage of the blood vessels.

[0257] If the electronic device 100 uses the inflator method (also known as the pressure boosting method) in oscillometric measurement to measure blood pressure, the electronic device 100 can acquire pressure signals during the inflation of the air bladder, filter the pressure signals to obtain pulse wave signals (also known as oscillating wave signals), and fit them to obtain the pulse wave envelope. The pressure value corresponding to the point of maximum amplitude of the pulse wave envelope can be the mean blood pressure (MBP). The pressure value corresponding to the first percentage of the amplitude at the point of maximum amplitude of the pulse wave envelope is the systolic pressure. The pressure value corresponding to the second percentage of the amplitude at the point of maximum amplitude of the pulse wave envelope is the diastolic pressure. For example, the first percentage can be 80%, and the second percentage can be 50%. This application embodiment does not limit the specific values ​​of the first and second percentages.

[0258] If the electronic device 100 uses the oscillometric method of deflation (also known as the pressure reduction method) to measure blood pressure, the electronic device 100 can acquire pressure signals during the deflation of the air bladder, filter the pressure signals to obtain pulse wave signals, and fit a pulse wave envelope. The pressure value corresponding to the third percentage point of the maximum amplitude of the pulse wave envelope is the diastolic pressure. The pressure value corresponding to the fourth percentage point of the maximum amplitude of the pulse wave envelope is the systolic pressure. For example, the third percentage can be 50%, and the fourth percentage can be 80%. This application embodiment does not limit the specific values ​​of the third and fourth percentages.

[0259] If the electronic device 100 uses the inflator method to measure blood pressure, the pressure signal collected by the electronic device 100 in steps S103 and S104 is the signal collected during the inflation of the airbag. If the electronic device 100 uses the deflation method to measure blood pressure, the pressure signal collected by the electronic device 100 in steps S103 and S104 is the signal collected during the deflation of the airbag.

[0260] It is understood that the electronic device 100 can also calculate the user's blood pressure value using other methods. For example, the electronic device 100 can calculate the user's blood pressure value by inputting the collected pulse wave signal and air pressure signal into a blood pressure measurement model. This blood pressure measurement model can be trained using pulse wave signals and air pressure signals collected from individuals with known blood pressure under external pressure. It should be understood that the embodiments of this application do not limit the specific algorithm used by the electronic device 100 to calculate blood pressure.

[0261] As can be seen from steps S101-S105, the electronic device 100 can control the airbag to inflate and then deflate. By compressing the user's blood vessels with the airbag, pressure signals are collected during the inflation or deflation of the airbag. The pressure signals are then used to calculate the user's blood pressure value, thereby achieving the measurement of the user's blood pressure.

[0262] Figure 20 This is a schematic diagram of the structure of the blood pressure measuring device 500 provided in the embodiments of this application.

[0263] like Figure 20 As shown, the blood pressure measuring device 500 may include components such as a processor 501 and a memory 502. These components can be connected via a bus 503 or other means. Figure 20 Taking a bus connection as an example, bus 503 is used to realize the connection and communication between processor 501 and memory 502. Wherein:

[0264] The processor 501 may include one or more processing units. The processor 501 can be used to provide computing and control capabilities to support the operation of the entire blood pressure measuring device 500.

[0265] The memory 502 can be used to store various software programs and / or multiple sets of instructions. Specifically, the memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state storage devices.

[0266] In this embodiment, the blood pressure measuring device 500 can be the aforementioned electronic device 100. The processor 501 can control the inflation and deflation of the air bladder during blood pressure measurement, and collect pressure signals during air bladder inflation or deflation, calculating blood pressure values ​​based on the pressure signals. The memory 502 can store the pressure signals collected during blood pressure measurement, the calculated blood pressure values, and the software or program code required for all or part of the functions of the electronic device 100 in the above method embodiment.

[0267] It should be noted that, Figure 20 The blood pressure measuring device 500 shown is merely one implementation of the embodiment of this application. In actual applications, the blood pressure measuring device 500 may include more or fewer components than shown, or combine certain components, or deploy different components. No limitation is made here.

[0268] It should be understood that each step in the above method embodiments can be completed by integrated logic circuits in the processor hardware or by instructions in software form. The method steps disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules in the processor.

[0269] This application also provides an electronic device that may include a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the method performed by the electronic device as described in any of the above embodiments.

[0270] This application also provides a chip system including a processing circuit and an interface circuit. The interface circuit is used to receive computer instructions and transmit them to the processing circuit. The processing circuit is used to execute the computer instructions to implement the method performed by the electronic device as in any of the above embodiments.

[0271] This application also provides a chip system including at least one processor for implementing the methods executed by the electronic device in any of the above embodiments. In one possible design, the chip system further includes a memory for storing program instructions and data, the memory being located within or outside the processor.

[0272] A chip system can consist of chips or include chips and other discrete components.

[0273] Optionally, there may be one or more processors in the chip system. The processor can be implemented in hardware or software. When implemented in hardware, the processor can be a logic circuit, integrated circuit, etc. When implemented in software, the processor can be a general-purpose processor, implemented by reading software code stored in memory.

[0274] Optionally, the chip system may contain one or more memories. These memories may be integrated with the processor or disposed separately; this application does not limit this. For example, the memory may be a non-transient processor, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or disposed on different chips. This application does not specifically limit the type of memory or the arrangement of the memory and processor.

[0275] For example, the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a micro controller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0276] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method executed by the electronic device in any of the above embodiments.

[0277] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the method executed by the electronic device as described in any of the above embodiments.

[0278] The various embodiments of this application can be combined arbitrarily to achieve different technical effects.

[0279] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as 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 described in this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0280] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

[0281] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0282] The terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0283] In summary, the above description is merely an embodiment of the technical solution of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made based on the disclosure of this application should be included within the scope of protection of this application.

Claims

1. A wearable device, characterized in that, The wearable device includes an airbag, which includes a first airbag and a second airbag. An air hole is provided between the first airbag and the second airbag to allow airflow between the first airbag and the second airbag. When the wearable device is worn on the human body, the first airbag is located between the second airbag and the human skin, and the area of ​​the first airbag projected onto the human skin is smaller than the area of ​​the second airbag projected onto the human skin. The wearable device can be used to collect pressure signals during the inflation or deflation of the airbag and calculate blood pressure values ​​based on the pressure signals.

2. The wearable device according to claim 1, characterized in that, The wearable device also includes a wearing body for wearing the wearable device on the human body, and the airbag is located on the wearing body, wherein when the wearable device is worn on the wrist, the airbag faces the radial artery on the wrist.

3. The wearable device according to claim 2, characterized in that, The length of the first airbag is greater than or equal to a first threshold, wherein when the wearable device is worn on the wrist, the first airbag with a length greater than or equal to the first threshold covers the radial artery.

4. The wearable device according to claim 2 or 3, characterized in that, The first distance between the first side of the first airbag and the second side of the second airbag is within a first range, wherein when the wearable device is worn on the wrist, the pressure exerted on the human skin by the first airbag after inflation is concentrated towards the radial artery, the first side is located on the first side of the first airbag, the second side is located on the first side of the second airbag, and the first side is the side away from the head of the wearable device.

5. The wearable device according to any one of claims 1-4, characterized in that, The wearable device also includes a pressure sensor. When the wearable device is worn on the human body, the pressure sensor is located on the side of the first airbag close to the human skin. The pressure sensor is set in the middle of the first airbag. The pressure sensor and the first airbag meet a first condition. After the first airbag is inflated, the effective pressure width between the first airbag and the user's skin is greater than a third threshold. The first condition includes one or more of the following: The distance between the edge of the pressure sensor and the edge of the first airbag is greater than the second threshold. The ratio of the width of the pressure sensor to the width of the first airbag is less than the force transmission attenuation coefficient of the airbag.

6. The wearable device according to any one of claims 1-5, characterized in that, A connection area is provided between the first airbag and the second airbag, the connection area is used to fix the first airbag and the second airbag, and the air hole is provided in the middle of the connection area.

7. A wearable device, characterized in that, The wearable device includes: a wearing body for wearing the wearable device on a human body, a portion of the wearing body including a cavity, the portion including the cavity forming an airbag, the airbag containing a filler for providing internal support for the airbag, and / or, not hindering the airbag from expanding or assisting the airbag from expanding when the airbag expands. The wearable device can be used to collect pressure signals during the inflation or deflation of the airbag and calculate blood pressure values ​​based on the pressure signals.

8. The wearable device according to claim 7, characterized in that, The filler is an elastic or variable material.

9. The wearable device according to claim 7 or 8, characterized in that, The structure of the filler is columnar, grid-like, or honeycomb-like.

10. The wearable device according to any one of claims 7-9, characterized in that, The airbag is located on the wearer, wherein when the wearable device is worn on the wrist, the airbag faces the radial artery on the wrist.

11. The wearable device according to any one of claims 1-10, characterized in that, The surface of the airbag includes: inclined surfaces with different tilt angles at different positions, forming a first pattern. When the wearable device is worn on the human body, the pressure applied outward by the airbag surface including the first pattern is directed towards the detection target on the human body when the airbag inflates.

12. The wearable device according to any one of claims 1-11, characterized in that, The surface of the airbag includes: a first surface made of a first material and a second surface made of a second material, wherein the first material and the second material have different hardness. When the wearable device is worn on the human body, the pressure applied outward by the first surface and the second surface to the detection target on the human body is directed towards the detection target on the human body when the airbag is inflated.

13. The wearable device according to any one of claims 1-12, characterized in that, The surface of the airbag includes a third surface with a first thickness and a fourth surface with a second thickness, wherein the first thickness and the second thickness are different. When the wearable device is worn on the human body, the pressure applied outward by the third surface and the fourth surface to the detection target on the human body is directed towards the detection target on the human body when the airbag is inflated.

14. The wearable device according to any one of claims 1-13, characterized in that, The pressure signal includes the pressure signal inside the airbag.

15. The wearable device according to claim 14, characterized in that, The wearable device further includes a pressure sensor. When the wearable device is worn on the human body, the pressure sensor is located on the side of the airbag close to the human skin. The pressure signal also includes the pressure signal collected by the pressure sensor.

16. A method for measuring blood pressure, characterized in that, The method is applied to the wearable device according to any one of claims 1-15, the method comprising: The wearable device controls the airbag to inflate and then deflate. The wearable device collects pressure signals during the inflation or deflation of the airbag. The wearable device calculates blood pressure based on the pressure signal.

17. The method according to claim 16, characterized in that, The pressure signal includes the pressure signal inside the airbag.

18. The method according to claim 17, characterized in that, The wearable device further includes a pressure sensor. When the wearable device is worn on a human body, the pressure sensor is located on the side of the airbag close to the human skin. The pressure signal also includes the pressure signal collected by the pressure sensor.

19. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored on the memory, wherein the processor executes the computer program to implement the method as described in any one of claims 16-18.

20. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the method as described in any one of claims 16-18.

21. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the method as described in any one of claims 16-18.

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