Wearable device, physiological parameter measurement method thereof, and electronic device

Abstract

This application provides a wearable device, a method for measuring physiological parameters therein, and an electronic device. The wearable device includes a main body, an adapter shaft, an airbag wristband, and an airbag blocking component. The main body has a first side and a second side disposed opposite to each other. The adapter shaft is mounted on the second side, and a gap is formed between the adapter shaft and the second side. The airbag wristband includes a wristband and an airbag. The airbag is at least partially stacked on one side of the wristband. The first end of the airbag wristband includes a first connecting end of the wristband and a second connecting end of the airbag. The first connecting end is used to fix the first side, and the second connecting end is used to connect to the main body. The airbag blocking component includes a blocking part and a driving part. The driving part is used to drive the blocking part to move towards the connecting shaft through a connecting hole. When the second end of the airbag wristband passes through the gap, the blocking part holds the airbag wristband against the connecting shaft, blocking the airbag. The wearable device of this application is suitable for users of all wrist sizes and provides a good user experience.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to a wearable device, a method for measuring physiological parameters thereof, and an electronic device. Background Technology

[0002] Traditional electronic blood pressure monitors, such as arm or wrist monitors, are based on the oscillometric blood pressure measurement principle. These monitors are bulky and heavy, suitable only for single indoor blood pressure measurements, and not ideal for prolonged wear. In contrast, electronic devices for measuring blood pressure (such as blood pressure watches or wristbands) are smaller and lighter, allowing for extended wear and meeting the need for continuous, real-time blood pressure monitoring. The basic principle of a blood pressure watch is as follows: when worn on the wrist, the bladder on the watchband covers both the radial and ulnar arteries. As the bladder inflates, it compresses the arteries. A sensor integrated into the watch body is connected to the bladder. During inflation, the sensor extracts the pulse wave signal from the arteries due to the pressure from the bladder, and uses an algorithm to calculate the blood pressure based on this pulse wave signal.

[0003] Because different people have different wrist circumferences, the length of a single airbag cannot be designed to simultaneously meet the requirements of measuring blood pressure for everyone and not covering the bottom of the watch. Summary of the Invention

[0004] This application provides a wearable device, a method for measuring physiological parameters therewith, and an electronic device. The wearable device of this application is suitable for users with different wrist circumferences, improving the accuracy of physiological parameter detection.

[0005] This application provides a wearable device. The wearable device includes a device body, a connecting shaft, an airbag wristband, and an airbag blocking component. The device body has a first side and a second side disposed opposite to each other, the connecting shaft is mounted on the second side, and a gap is formed between the connecting shaft and the second side.

[0006] The airbag wristband includes a wristband and an airbag, with the airbag at least partially overlapped on one side of the wristband. The first end of the airbag wristband includes a first connecting end of the wristband and a second connecting end of the airbag. The first connecting end is used for fixed connection to the first side, and the second connecting end is used for connection to the device body. The device body is used for inflating or deflating the airbag.

[0007] The airbag blocking component includes a blocking part and a driving part. The driving part is disposed in the main body of the device, while the blocking part is located outside the main body. The driving part is used to drive the blocking part to move towards the connecting shaft. When the second end of the airbag wristband passes through the gap, the blocking part holds the airbag wristband against the connecting shaft, blocking the airbag and dividing the airbag into an effective segment and an ineffective segment. The effective segment is from the first connecting end of the airbag to the part where the airbag abuts against the connecting shaft, and the ineffective segment is the rest of the airbag.

[0008] Understandably, when a user puts on the wearable device and starts blood pressure measurement, the blocking part of the airbag blocker compresses the airbag wristband and holds it against the connecting shaft, causing the airbag to be divided into an effective segment and an ineffective segment at the connecting shaft. The wearable device can inflate the effective segment of the airbag, causing the airbag to expand and compress the user's radial and ulnar arteries to complete the blood pressure measurement.

[0009] It's understandable that wearable devices require accurate blood pressure readings if the airbag in the wristband fully covers the radial and ulnar arteries. However, if the airbag is designed to cover both arteries for users with varying wrist sizes, then for users with smaller wrists, there might be excess airbag covering the wrist. This excess airbag would need to be wrapped around the wrist, potentially getting caught in the bottom of the device and negatively impacting the user experience. Alternatively, existing wearable devices might have multiple airbags of different lengths. Users select the appropriate airbag based on their wrist size, assemble it themselves, and then input the corresponding airbag configuration into the device to access the appropriate blood pressure algorithm. Errors in any of these steps can lead to significant measurement errors, placing high demands on the user and resulting in poor usability.

[0010] When a user wears the wearable device of this application, the user can adjust the length of the part of the airbag wristband that fits against the user's wrist by passing the second end of the airbag wristband through the gap between the connecting shaft and the second side. This ensures that the airbag of the airbag wristband fully covers the user's radial and ulnar arteries, and then the driving part drives the blocking part to block the airbag. In other words, the wearable device of this application can be used by users with different wrist sizes using a single model of airbag wristband. Users with different wrist sizes can adjust the airbag wristband to a suitable length themselves, avoiding errors caused by mismatch between the wrist size and the length of the airbag, improving the accuracy of blood pressure measurement, obtaining accurate blood pressure values, and reducing costs. At the same time, because the wearable device of this application can adjust the length of the airbag wristband, the airbag wristband can fit the user's wrist more closely, and the effective section of the airbag can just cover the user's radial and ulnar arteries. Compared with existing wristbands, where the airbag may not fully cover or overlap the user's radial and ulnar arteries during wear, the wearable device provided by this application has higher accuracy in blood pressure measurement.

[0011] In one possible implementation, the airbag blocking component further includes a transmission part, with the driving part and the blocking part connected to its two ends respectively, so as to transmit the driving force of the driving part to the blocking part.

[0012] Understandably, if the main body of the device does not have a connecting hole, the drive unit of the airbag blocking component can only be located on the outside of the main body, affecting the aesthetics of the device. However, by setting a connecting hole between the inside and outside of the main body, the drive unit can be housed inside the main body, improving the product's integration while also enhancing its appearance.

[0013] In one possible implementation, the blocking part includes a first surface facing the connecting shaft, and the connecting shaft includes a second surface facing the blocking part. When the blocking part blocks the airbag, the airbag wristband is clamped between the first surface and the second surface, and the shapes of the first surface and the second surface are adapted to each other.

[0014] It is understandable that when the blocking part holds the airbag against the connecting shaft, the airbag wristband is clamped between the first surface and the second surface. When the shapes of the first surface and the second surface are matched, the first surface and the second surface can fit together with the largest area, so that the compression area of ​​the blocking part and the connecting shaft on the airbag is maximized, thereby maximizing the blocking effect of the airbag blocking part on the airbag wristband.

[0015] This application also provides a wearable device. The wearable device includes a device body, a connecting shaft, an airbag wristband, and an airbag blocking component. The device body has a first side and a second side disposed opposite to each other, and the connecting shaft is mounted on the second side, forming a gap between the connecting shaft and the second side. The airbag wristband includes a wristband and an airbag, with the airbag at least partially stacked on one side of the wristband to form an airbag wristband. The first end of the airbag wristband includes a first connecting end of the wristband and a second connecting end of the airbag. The first connecting end is used to fixably connect to the first side, and the second connecting end is used to connect to the device body. The device body is used to inflate or deflate the airbag.

[0016] The airbag blocking component is a sliding connection. One side of the sliding connection is connected to both ends of the connecting shaft, and the other side is slidably connected to the second side. When the second end of the airbag wristband passes through the gap, the sliding connection can drive the connecting shaft closer to the second side, thereby holding the airbag wristband against the second side, blocking the airbag, and dividing the airbag into an effective segment and an ineffective segment. The effective segment is from the first connecting end of the airbag to the part where the airbag abuts against the connecting shaft, and the ineffective segment is the rest of the airbag.

[0017] Understandably, when a user initiates blood pressure measurement, they can manually operate the sliding connector, pushing it closer to the second side and holding the airbag wristband against it. At this point, the sliding connector engages with the connecting shaft to block the airbag, dividing it into an effective segment and an ineffective segment. In this implementation, the sliding connector blocks the airbag wristband manually. Compared to an electrically driven sliding connector, this reduces the need for a drive and transmission unit, facilitating product miniaturization. Furthermore, manual operation is more energy-efficient than electric drive, enhancing the product's battery life and reducing manufacturing costs.

[0018] In one possible implementation, the sliding connection includes a main body and two extensions connected to both ends of the main body. The ends of the two extensions facing away from the main body are respectively connected to both ends of a connecting shaft. The sliding connection and the connecting shaft form a fixing hole, through which the airbag wristband passes. The extensions are provided with mating grooves, and a limiting member is provided on the second side, which is confined within the mating groove to fix the sliding connection to the second side.

[0019] Understandably, when a user wears the wearable device, after the user passes the airbag wristband through the fixing hole, the sliding connector can move the connecting shaft closer to the second side and hold the airbag wristband against the second side, blocking the airbag. At the same time, under the combined action of the mating groove and the limiting component, the sliding connector can be fixed to the second side, so that the airbag wristband can maintain the blocked state for blood pressure measurement.

[0020] In one possible implementation, the wearable device further includes a length sensing module comprising a first electrode, a second electrode, a circuit board, and a flexible resistive film. The flexible resistive film covers the surface of the airbag away from the wristband. The first electrode is disposed on the side of the flexible resistive film near the second connection end of the airbag and is electrically connected to the flexible resistive film. The second electrode is fixed to the blocking member or the second side facing the airbag, and is used to electrically connect to the flexible resistive film when the blocking member blocks the airbag. The circuit board is disposed inside the device body and is electrically connected to the first and second electrode pieces. The wearable device is used to determine the effective length of the airbag by obtaining the resistance of the flexible resistive film between the first and second electrode pieces when the blocking member blocks the airbag.

[0021] Understandably, when the airbag blocking device is activated, it holds the airbag wristband against the connecting shaft or the second side. At this time, the second electrode plate, fixed to the blocking part or the surface of the second side facing the airbag, is electrically connected to the flexible resistive film. The resistance between the first and second electrode plates can be measured using the circuit board built into the main body of the device, thus determining the effective length of the airbag.

[0022] In one possible implementation, the wearable device also includes a pressure sensor located inside the main body of the device, which is used to obtain the air pressure data of the airbag.

[0023] It is understood that the wearable device provided in this application imports the data from the barometric pressure sensor and the effective length of the airbag into the blood pressure algorithm model, and calculates the measured blood pressure value through the blood pressure algorithm model. Compared with calculating by only referring to the data from the barometric pressure sensor, the blood pressure algorithm model of this application is more accurate and the calculated blood pressure data is more accurate by referring to both the data from the barometric pressure sensor and the effective length of the airbag.

[0024] In one possible implementation, after the blocking part blocks the airbag wristband, the wearable device inflates the airbag and detects the air pressure inside the airbag to obtain the air pressure data. In other words, inflating only the effective section of the airbag can effectively improve the accuracy of blood pressure measurement.

[0025] In one possible implementation, when the wearable device finishes measuring blood pressure, the control block is moved away from the airbag wristband so that the user can remove the wearable device.

[0026] In one possible implementation, after the wearable device finishes measuring blood pressure, the airbag is deflated. When the internal pressure of the airbag drops to less than or equal to 5 mmHg, the blocking part is moved away from the airbag wristband. It is understood that when the internal pressure of the airbag drops to 5 mmHg or below, it ensures that the gas inside the effective section will not flow back into the ineffective section after the airbag blocking component returns to the non-blocking state, thus affecting the user's wearing experience.

[0027] This application also provides a wearable device, comprising a device body, a connecting shaft, an airbag wristband, and an airbag blocking component, wherein: the device body has a first side and a second side disposed opposite to each other; the connecting shaft is mounted on the second side, forming a gap between the connecting shaft and the second side; the airbag wristband includes a wristband and an airbag, the airbag being at least partially stacked on one side of the wristband, the airbag wristband having a first end and a second end; wherein the first end includes a first connecting end of the wristband and a second connecting end of the airbag, the first connecting end being used to fixally connect to the first side, and the second connecting end being used to connect to the device body, so that the device body can inflate or deflate the airbag through the second connecting end; the second end passes through the gap and is fixed to the side of the wristband opposite to the airbag; the airbag blocking component includes a blocking part and a driving part, the driving part being disposed in the device body, the blocking part being located outside the device body, the driving part being used to drive the blocking part to move a preset distance toward the connecting shaft, so that the blocking part holds the airbag wristband against the connecting shaft, and when the airbag is inflated, only the portion of the airbag between the second connecting end and the blocking part is inflated.

[0028] The aforementioned wearable device allows for the adjustment of the length of the airbag inflation section based on the user's wrist circumference during physiological parameter measurements, resulting in more accurate measurements.

[0029] In one possible implementation, the drive unit is located inside the main body of the device, and the airbag blocking component also includes a transmission unit, with the two ends of the transmission unit connected to the drive unit and the blocking unit respectively, so as to transmit the driving force of the drive unit to the blocking unit.

[0030] In one possible implementation, the main body of the device has a connecting hole through which the transmission part passes.

[0031] In one possible implementation, the blocking part includes a first surface facing the connecting shaft, and the connecting shaft includes a second surface facing the blocking part. When the blocking part blocks the airbag wristband, the airbag wristband is clamped between the first surface and the second surface, and the shapes of the first surface and the second surface are adapted to each other.

[0032] The above implementation method can improve the blocking effect between the blocking part and the connecting shaft, and better separate the two parts of the airbag.

[0033] In one possible implementation, the wearable device further includes a length sensing module comprising a first electrode sheet, a second electrode sheet, a circuit board, and a flexible resistive film. The flexible resistive film covers the surface of the airbag away from the wristband. The first electrode sheet is disposed on the side of the flexible resistive film near the second connecting end and is electrically connected to the flexible resistive film. The second electrode sheet is fixed to the surface of the blocking portion facing the airbag. The second electrode sheet is used to electrically connect to the flexible resistive film when the blocking portion blocks the airbag. The circuit board is disposed inside the device body and is electrically connected to the first and second electrode sheets. The wearable device is used to determine the length of the airbag between the first and second electrode sheets by obtaining the resistance of the flexible resistive film between the first and second electrode sheets when the blocking portion holds the airbag wristband against the connecting shaft.

[0034] The above implementation method enables wearable devices to automatically obtain the length of the airbag inflation portion for calculating physiological parameters.

[0035] In one possible implementation, the wearable device also includes a pressure sensor located inside the main body of the device, which is used to obtain the air pressure data of the airbag.

[0036] In one possible implementation, the wearable device includes an air pump located inside the main body of the device, which is used to inflate the airbag.

[0037] In one possible implementation, the wearable device further includes a processor located inside the main body of the device. The processor is used to: control the drive unit to move the blocking unit a preset distance toward the direction of the connecting shaft; inflate the airbag; detect the air pressure inside the airbag and acquire air pressure data from the start to the end of inflation; determine physiological parameters based on the air pressure data; deflate the airbag after the physiological parameter measurement is completed; and control the drive unit to move away from the connecting shaft.

[0038] In one possible implementation, before controlling the drive unit to move in a direction closer to the connecting shaft, the processor is also used to: determine that the wearable device is in a worn state.

[0039] In one possible implementation, before controlling the drive unit to move toward the direction close to the connecting shaft, the processor is also used to: determine the airbag connecting device body.

[0040] By applying the above implementation method, the wearable device can start the drive unit only after it is determined that the device is being worn and / or that the airbag is connected to the main body of the device, thus avoiding accidental operation.

[0041] In one possible implementation, before controlling the drive unit to move in a direction closer to the connecting shaft, the processor is also used to: determine when a predetermined time has arrived.

[0042] In one possible implementation, the wearable device includes an input device for receiving user input; before the control drive moves toward the connection axis, the processor is further configured to: detect that the input device has received a first input, the first input being used to initiate the measurement of physiological parameters.

[0043] By applying the above implementation method, wearable devices can perform timed measurements of physiological parameters and / or single measurements triggered by the user.

[0044] In one possible implementation, after the control drive unit moves the blocking unit a preset distance toward the connecting shaft, the processor is further configured to: determine the current value of the current flowing through the first path, the first path being composed of a circuit board, a first electrode plate, a second electrode plate, and at least a portion of a flexible resistive film; determine the voltage value between the first electrode plate and the second electrode plate; determine the resistance value of at least a portion of the flexible resistive film based on the current value and the voltage value; determine the length of the air sac between the first electrode plate and the second electrode plate based on the resistance value; and determine physiological parameters based on air pressure data, specifically by determining physiological parameters based on air pressure data and length.

[0045] The above implementation method enables wearable devices to automatically obtain the length of the airbag inflation portion for calculating physiological parameters.

[0046] In one possible implementation, the processor is also used to control the blocking part away from the airbag wristband after the measurement of physiological parameters is completed.

[0047] In one possible implementation, the processor is also used to control the air pump to deflate the airbag after the physiological parameters are measured, and to control the blocking part to move away from the airbag wristband when the air pressure inside the airbag drops to less than or equal to a preset threshold.

[0048] By applying the above implementation method, when the blocking part is far away from the airbag wristband, the impact of the inflated part of the airbag on the uninflated part can be reduced.

[0049] This application also provides a method for measuring physiological parameters, which is applied to a wearable device. The wearable device includes a device body, a connecting shaft, an airbag wristband, and an airbag blocking component. The airbag blocking component includes a blocking part and a driving part. The measurement method includes: controlling the driving part to move towards the connecting shaft; the blocking part of the airbag blocking component blocking the airbag wristband, dividing the airbag into an effective segment and an ineffective segment; inflating the airbag in the airbag wristband; detecting the air pressure inside the airbag, and obtaining air pressure data. This application, by blocking the airbag before inflating it, inflates only the effective segment of the airbag, thus obtaining an accurate blood pressure measurement value.

[0050] In one possible implementation, before controlling the drive unit to move toward the direction close to the connecting shaft, the method further includes: determining that the wearable device is in a worn state, and performing subsequent measurement steps only when the wearable device is in a worn state.

[0051] In one possible implementation, the airbag wristband includes an airbag and a wristband; before controlling the drive unit to move toward the connecting shaft, the method further includes: determining that the airbag is connected to the device body, and that the accuracy of subsequent blood pressure measurements can only be guaranteed when the airbag is connected to the device body.

[0052] In one possible implementation, before controlling the drive unit to move toward the direction close to the connecting shaft, the method further includes: determining that the wearable device has reached a predetermined time, which allows for blood pressure measurement of the user at the predetermined time, thereby improving the user experience.

[0053] In one possible implementation, before controlling the drive unit to move toward the direction close to the connecting shaft, the method further includes: detecting a first operation, the first operation acting on the wearable device, the measurement method being able to measure the user's blood pressure in response to the first operation.

[0054] In one possible implementation, after blocking the airbag wristband, the measurement method further includes determining the effective length of the airbag to improve the accuracy of blood pressure measurement.

[0055] In one possible implementation, the wearable device includes a circuit board, a first electrode sheet, a second electrode sheet, and a flexible resistive film; wherein the flexible resistive film covers the surface of the airbag away from the wristband; the first electrode sheet is disposed on the side of the flexible resistive film near the second connection end and is electrically connected to the flexible resistive film; the second electrode sheet is fixed to the surface of the blocking portion facing the airbag; the second electrode sheet is used to electrically connect to the flexible resistive film when the blocking portion blocks the airbag; determining the effective length of the airbag includes:

[0056] The method involves determining the current value flowing through a first path, which comprises the circuit board, the first electrode plate, the second electrode plate, and at least a portion of the flexible resistive film; determining the voltage value between the first and second electrode plates; determining the resistance value of at least a portion of the flexible resistive film based on the current value and the voltage value; and determining the effective length of the airbag based on the resistance value. By determining the effective length of the airbag, a more accurate blood pressure value can be obtained.

[0057] In one possible implementation, the measurement method further includes obtaining a blood pressure value based on the air pressure data and the effective length, and the blood pressure measurement value obtained in the above manner has high accuracy.

[0058] In one possible implementation, it is determined whether the blood pressure measurement has ended. If it has ended, the blocking part is controlled to move away from the airbag wristband so that the user can remove the wearable device.

[0059] In one possible implementation, after blood pressure measurement, the airbag is deflated. If the internal pressure of the airbag drops to less than or equal to 5 mmHg, the blocking part is moved away from the airbag wristband. It is understood that when the internal pressure of the airbag drops to 5 mmHg or below, it ensures that the gas inside the effective section will not flow back into the ineffective section after the airbag blocking component returns to a non-blocking state, thus affecting the user's wearing experience.

[0060] This application also provides an electronic device. The electronic device includes a device body; a connecting shaft; an airbag wristband, the airbag wristband including an airbag; an airbag blocking member, the airbag blocking member including a blocking part and a driving part; a memory, the memory for storing a computer program; and a processor, the processor for executing the computer program, causing the electronic device to perform the following steps: controlling the driving part to move the blocking part a preset distance toward the connecting shaft; controlling the inflation of the airbag; detecting the air pressure inside the airbag and acquiring air pressure data from the start of inflation to the end of inflation; determining physiological parameters based on the air pressure data; after the physiological parameters are determined and measured, controlling the deflation of the airbag; and controlling the driving part to move away from the connecting shaft.

[0061] The aforementioned wearable device allows for the adjustment of the length of the airbag inflation section based on the user's wrist circumference during physiological parameter measurements, resulting in more accurate measurements.

[0062] In one possible implementation, before controlling the drive unit to move toward the connecting shaft, the processor is also used to cause the electronic device to perform the following steps: determining that the wearable device is in a worn state.

[0063] In one possible implementation, before the control drive moves toward the direction close to the connecting shaft, the processor is also used to cause the electronic device to perform the following steps: determining the airbag connecting device body.

[0064] By applying the above implementation method, the wearable device can start the drive unit only after it is determined that the device is being worn and / or that the airbag is connected to the main body of the device, thus avoiding accidental operation.

[0065] In one possible implementation, before controlling the drive unit to move toward the connecting shaft, the processor is also used to cause the electronic device to perform the following steps: determining when a predetermined time has been reached.

[0066] In one possible implementation, the electronic device includes an input device for receiving user operations; prior to the control drive moving toward the connecting shaft, the processor further enables the electronic device to perform the following steps: detecting that the input device has received a first operation, the first operation being used to initiate the measurement of physiological parameters.

[0067] By applying the above implementation method, wearable devices can perform timed measurements of physiological parameters and / or single measurements triggered by the user.

[0068] In one possible implementation, the electronic device includes a circuit board, a first electrode plate, a second electrode plate, and a flexible resistive film; wherein, the flexible resistive film covers the surface of the airbag away from the wristband; the first electrode plate is disposed on the side of the flexible resistive film near the second connection end and is electrically connected to the flexible resistive film; the second electrode plate is fixed to the surface of the blocking part facing the airbag; the second electrode plate is used to electrically connect to the flexible resistive film when the blocking part blocks the airbag; after the control drive unit drives the blocking part to move a preset distance in the direction close to the connection shaft, the processor is further used to cause the electronic device to perform the following steps: determining the current value of the current flowing through the first path, the first path being composed of the circuit board, the first electrode plate, the second electrode plate, and at least a portion of the flexible resistive film; determining the voltage value between the first electrode plate and the second electrode plate; determining the resistance value of at least a portion of the flexible resistive film based on the current value and the voltage value; determining the length of the airbag between the first electrode plate and the second electrode plate based on the resistance value; and determining physiological parameters based on air pressure data, specifically: determining physiological parameters based on air pressure data and length.

[0069] The above implementation method enables wearable devices to automatically obtain the length of the airbag inflation portion for calculating physiological parameters.

[0070] In one possible implementation, the processor is also used to cause the electronic device to perform the following steps: after the measurement of physiological parameters is completed, control the blocking part to move away from the airbag wristband.

[0071] In one possible implementation, the processor is also used to cause the electronic device to perform the following steps: after the physiological parameters are measured, control the air pump to deflate the airbag, and when the air pressure inside the airbag drops to less than or equal to a preset threshold, control the blocking part to move away from the airbag wristband.

[0072] By applying the above implementation method, when the blocking part is far away from the airbag wristband, the impact of the inflated part of the airbag on the uninflated part can be reduced.

[0073] This application also provides a computer storage medium including computer instructions that, when executed on an electronic device, cause the electronic device to perform the device control method in any of the possible implementations of any of the above aspects.

[0074] This application also provides a computer program product that, when run on a computer, causes the computer to execute the device control method in any of the possible implementations of any of the above aspects. Attached Figure Description

[0075] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0076] Figure 1 This is a schematic diagram of the structure of a wearable device provided in an embodiment of this application;

[0077] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the wearable device along the CC direction.

[0078] Figure 3A yes Figure 1 The diagram shows the exploded structure of the wearable device.

[0079] Figure 3B yes Figure 3A A schematic diagram of the structure shown, in which the airbag wristband is in a flattened state.

[0080] Figure 4 yes Figure 3A The diagram shows an exploded view of the main body of the wearable device.

[0081] Figure 5 yes Figure 4 An exploded view of the outer shell in the structure shown.

[0082] Figure 6 yes Figure 5 An exploded view of the chassis of the main body of the equipment shown.

[0083] Figure 7 yes Figure 3A The diagram shows a cross-sectional view of the main body of the equipment along the AA direction.

[0084] Figure 8 yes Figure 1 The diagram shows the installation of the airbag, air pump, and air pressure sensor in the wearable device.

[0085] Figure 9A yes Figure 3A The diagram shows a cross-sectional view of the main body of the equipment along the BB direction.

[0086] Figure 9B yes Figure 9A The diagram shows the structure of the main body of the device and the airbag wristband.

[0087] Figure 10 yes Figure 9A A cross-sectional structural schematic diagram of another embodiment of the main body of the device shown;

[0088] Figure 11 yes Figure 9B The diagram shows the structure of the airbag blocking component of the main body of the device in its initial state;

[0089] Figure 12 yes Figure 9B A schematic diagram of the airbag blocking component of the main body of the device in the blocking state;

[0090] Figure 13 yes Figure 9B The diagram shows the structure of the airbag blocking component of the main body of the device in other embodiments;

[0091] Figure 14 yes Figure 13 The diagram shown illustrates the structure of the airbag blocking device in one embodiment of another implementation.

[0092] Figure 15A yes Figure 13 The diagram shows a structural schematic of the airbag blocking device in another implementation scenario of other embodiments;

[0093] Figure 15B yes Figure 9A A schematic diagram of another embodiment of the airbag blocking device shown;

[0094] Figure 16 yes Figure 9A A schematic diagram of another embodiment of the airbag blocking component shown, in conjunction with the main body of the device;

[0095] Figure 17 yes Figure 16 The diagram shows the structure of the sliding connection part blocking the airbag;

[0096] Figure 18 yes Figure 15A The diagram shows the structure of the sliding connection and the connecting shaft.

[0097] Figure 19 yes Figure 15A The diagram shows the structure of the sliding connection part where the mating groove mates with the limiting member.

[0098] Figure 20A yes Figure 19The diagram shows the structure where the sliding connection part's mating groove is separated from the limiting member.

[0099] Figure 20B yes Figure 16 A schematic diagram of another embodiment of the sliding connection shown;

[0100] Figure 21 yes Figure 1 The diagram shows the structural arrangement of the length sensing module of the wearable device with the airbag blocking component and the airbag wristband.

[0101] Figure 22 yes Figure 21 The diagram shows a structural schematic of another embodiment of the cooperation between the length sensing module, the airbag blocking component, and the airbag wristband.

[0102] Figure 23 yes Figure 21 The diagram shown illustrates the working principle of the length sensing module.

[0103] Figure 24 yes Figure 1 The diagram shows the functional modules of the wearable device.

[0104] Figure 25 yes Figure 1 The diagram shows a flowchart of the physiological parameter measurement method. Detailed Implementation

[0105] The embodiments of this application are described below with reference to the accompanying drawings.

[0106] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Sliding connection" refers to a connection where the components can slide relative to each other after connection. The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. "Multiple" refers to at least two.

[0107] It is understood that the specific embodiments described herein are merely illustrative of related embodiments and not intended to limit the scope of those embodiments. Furthermore, it should be noted that, for ease of description, only the parts relevant to the embodiments are shown in the accompanying drawings.

[0108] Please see Figure 1 , Figure 2 and Figure 3A , Figure 1 This is a schematic diagram of the structure of a wearable device 100 provided in an embodiment of this application. Figure 2 yes Figure 1 The wearable device 100 shown is a cross-sectional structural diagram in the CC direction. Figure 3A yes Figure 1 The diagram shows an exploded view of the wearable device 100.

[0109] Wearable devices 100 include, but are not limited to, wrist-worn electronic products with blood pressure measurement functions such as watches, smartwatches, wristbands, and smart bracelets. Figure 1 , Figure 2 , Figure 3A The wearable device 100 of the illustrated embodiment is described using a smartwatch as an example.

[0110] Please see Figure 2 , Figure 3A and Figure 3B , Figure 3B yes Figure 3A The diagram shows the airbag wristband in a flattened state.

[0111] The wearable device 100 includes a device body 10 and an airbag wristband 20. The device body 10 has a first side 101 and a second side 102 disposed opposite to each other, and a connecting shaft 11 mounted on the second side 102, with a gap formed between the connecting shaft 11 and the second side 102. The airbag wristband 20 includes a wristband 23 and an airbag 24, with the airbag 24 at least partially stacked on one side of the wristband 23 to form the airbag wristband 20. The first end 21 of the airbag wristband 20 includes a first connecting end 211 of the wristband and a second connecting end 212 of the airbag 24. The first connecting end 211 is used to fixally connect to the first side 101, and the second connecting end 212 is used to connect to the device body 10. The device body 10 is used to inflate or deflate the airbag 24. The second end 22 of the airbag wristband 20 passes through the gap between the second side 102 and the connecting shaft 11 to achieve adjustable fixation of the airbag wristband 20 to the second side 102. Users can adjust the length of the airbag wristband 20 according to their own wrist circumference so that the wearable device 100 can be used by users with different wrist circumferences.

[0112] It should be noted that the airbag 24 being at least partially overlapped on one side of the wristband 23 can include two situations: first, the airbag 24 is partially overlapped on one side of the wristband 23; second, the airbag 24 is entirely overlapped on one side of the wristband 23.

[0113] In this embodiment, the second end 22 of the airbag wristband 20, after passing through the gap between the second side 102 and the connecting shaft 11, can be bent and fixed on the side of the wristband opposite to the airbag. This prevents the second end 22 of the airbag wristband 20 from warping up after passing through the gap between the second side 102 and the connecting shaft 11, which helps improve the product's aesthetics and the user's wearing experience. Of course, the second end 22 of the airbag wristband 20 can also remain unbent after passing through the gap between the second side 102 and the connecting shaft 11.

[0114] It should be noted that the gap between the second side 102 and the connecting shaft 11 is small enough to allow the airbag wristband 20 to pass through, so that after the airbag wristband 20 passes through the gap between the second side 102 and the connecting shaft 11, the surface of the airbag wristband 20 can contact the surfaces of the second side 102 and the connecting shaft 11. This increases the friction between the airbag wristband 20 and the second side 102 and the connecting shaft 11, allowing the airbag wristband 20 to be more stably fixed to the second side 102. This prevents the airbag wristband 20 from slipping or loosening, and makes the airbag wristband 20 fit the user's wrist better during wear, improving the wearing experience.

[0115] Of course, in other embodiments, the gap between the second side 102 and the connecting shaft 11 is wider in the direction perpendicular to the connecting shaft 11 than the thickness of the airbag wristband 20 in the uninflated state, so that the airbag wristband 20 can be easily passed through. The airbag wristband 20 can also be fixed to the second side 102 and the connecting shaft 11 by other components.

[0116] In some embodiments, the wristband 23 can be detachably connected to the device body 10 or fixedly connected to the device body 10. In other embodiments, the airbag 24 can be detachably connected to the wristband 23 and the device body 10, so that the airbag 24 can be removed from the wristband 23 and the device body 10 when blood pressure measurement is not being performed, making it more comfortable for daily wear. In other embodiments, the connection between the airbag 24 and the wristband 23 can be a fixed connection, that is, the airbag 24 and the wristband 23 are not detachable. The airbag 24 can also be detachably connected to the device body 10. Alternatively, the airbag 24 can also be fixedly connected to the device body 10 and the wristband 23 by other connection methods such as adhesive bonding.

[0117] In other embodiments, the airbag 24 can also be integrally formed with the wristband 23. For example, there are two cases where the airbag 24 and wristband 23 are integrally formed. In one case, the airbag 24 can be directly connected to the device body 10 as the wristband 23 for the user to wear. In another case, the airbag 24 can be located inside the wristband 23. Integrating the airbag 24 and wristband 23 into a single structure improves the integration of the wearable device 100. Simultaneously, it eliminates the installation process between the airbag 24 and wristband 23, preventing loosening of the airbag 24 and wristband 23, and improving the strength of the airbag wristband 20 and the accuracy of blood pressure measurement.

[0118] Please refer to the following: Figure 3A and Figure 4 , Figure 4 yes Figure 3A The diagram shows an exploded view of the main body 10 of the wearable device 100.

[0119] In this embodiment, the device body 10 can be a cuboid structure, and may include a housing 12, a display screen 13, an air pump 14, a pressure sensor 15, a motherboard 16, and a battery 17. The display screen 13 is fixed to the housing 12 and together with the housing 12 forms a receiving space 103 for the device body 10. The air pump 14, pressure sensor 15, motherboard 16, and battery 17 are all disposed within the receiving space 103. The display screen 13, air pump 14, and pressure sensor 15 are all electrically connected to the motherboard 16 to control the display screen 13, air pump 14, and pressure sensor 15 through the motherboard 16. The battery 17 is electrically connected to the motherboard 16 and supplies power to the motherboard 16 and other components electrically connected to the motherboard 16.

[0120] The cuboid structure mentioned above includes both cuboid-shaped structures and structures approximating cuboid shapes. A structure approximating a cuboid shape refers to a cuboid with locally concave or convex lines on its outer surface. The same understanding applies to the subsequent descriptions of the structure's shape. It should be understood that in other embodiments, the device body 10 may also be cylindrical, frustum conical, cube, or other irregularly shaped structures; this application does not impose any limitations on this.

[0121] Please refer to the following: Figure 3A , Figure 4 and Figure 5 , Figure 5 yes Figure 4 An exploded view of the outer shell 12 in the structure shown.

[0122] In this embodiment, the outer casing 12 includes a chassis 121 and a frame 122. The chassis 121 is fixed to one side of the frame 122, and the display screen 13 is fixed to the side of the frame 122 away from the chassis 121. That is, the chassis 121 and the display screen 13 are respectively fixed to opposite sides of the frame 122. The chassis 121, the frame 122, and the display screen 13 together form the receiving space 103 of the device body 10. When the user wears the wearable device 100, the display screen 13 is positioned away from the user's wrist, and the chassis 121 is positioned close to the user's wrist.

[0123] In this embodiment, the chassis 121 can be detachably mounted to the frame 122 to facilitate the repair and replacement of functional components such as the memory card, SIM card, and speaker within the device body 10. In some embodiments, the chassis 121 can be detachably mounted to the frame 122 using fasteners such as screws or bolts. In other embodiments, the chassis 121 and the frame 122 can also be an integrally formed structure to improve the strength and stability of the device body 10.

[0124] The frame 122 includes a first sidewall 1221, a second sidewall 1223, a third sidewall 1222, and a fourth sidewall 1224 connected sequentially. The first sidewall 1221 and the third sidewall 1222 are arranged opposite to each other, and the second sidewall 1223 and the fourth sidewall 1224 are arranged opposite to each other. The first sidewall 1221 is located on the first side 101 of the device body 10, and the third sidewall 1222 is located on the second side 102 of the device body 10. The wristband 23 of the airbag wristband 20 is installed on the first sidewall 1221. In some embodiments, the first sidewall 1221 may be provided with a mounting hole 1225, and the first connecting end 211 of the wristband 23 may also be provided with a fixing post 231. The fixing post 231 is disposed in the mounting hole 1225 to install the first connecting end 211 of the wristband 23 onto the first sidewall 1221.

[0125] Of course, in other embodiments, this application does not limit the installation method of the wristband 23 and the first sidewall 1221.

[0126] The connecting shaft 11 is mounted on the third sidewall 1222, forming a space between the third sidewall 1222 and the connecting shaft 11 to allow the second end 22 of the airbag wristband 20 to pass through. The connecting shaft 11 is detachably mounted on the third sidewall 1222. In some embodiments, the third sidewall 1222 may also have mounting holes through which the connecting shaft 11 is fixed to the third sidewall 1222, facilitating replacement and maintenance of the connecting shaft 11. Of course, in other embodiments, the connecting shaft 11 may also be integrally formed with the frame 122 to improve product stability.

[0127] like Figure 5In this embodiment, the device body 10 may further include buttons 18 for receiving user input. In this embodiment, there are two buttons 18, spaced apart on the fourth sidewall 1224 of the frame 122. In some embodiments, the fourth sidewall 1224 of the frame 122 may also have two button holes 181 penetrating through the fourth sidewall 1224 of the frame 122, with the buttons 18 at least partially housed within the button holes 181. The buttons 18 are electrically connected to the motherboard 16, enabling the user to call corresponding function modules of the wearable device 100 when pressing the buttons 18.

[0128] Of course, in other embodiments, the number of buttons 18 and the number of button holes 181 may also be one or more. Alternatively, the main body 10 of the device may not include buttons, and the user may also call up the functional modules of the wearable device 100 through the touch screen 13. This application does not limit the number of buttons 18 and button holes 181.

[0129] Please refer to the following: Figure 5 , Figure 6 and Figure 7 , Figure 6 yes Figure 5 An exploded view of the chassis 121 of the main body 10 of the device shown. Figure 7 yes Figure 3A The diagram shows a cross-sectional view of the main body 10 of the device along the AA direction.

[0130] In this embodiment, the chassis 121 includes a top surface 1211 facing the receiving space 103 and a bottom surface 1212 opposite to the top surface 1211. The top surface 1211 of the chassis 121 is fixedly connected to the frame 122. The portion of the bottom surface 1212 near the first side 101 is recessed towards the top surface 1211 to form a first mounting groove 1213. The first mounting groove 1213 has an opening 1214 facing the first side 101, and the second connecting end 212 of the airbag 24 is mounted in the first mounting groove 1213 through the opening 1214.

[0131] In some embodiments, the chassis 121 may further include a slot cover 1215, which is detachably mounted on the first mounting slot 1213 to secure the airbag 24 to the first mounting slot 1213. Of course, in other embodiments, the slot cover may not be provided. For example, the second connecting end 212 of the airbag 24 may be provided with a retaining structure to retain and fix it to the first mounting slot. This application does not limit the connection method between the airbag 24 and the device body 10.

[0132] like Figure 5A second mounting groove 1216 is formed by a partial recess on the top surface 1211 facing the bottom surface 1212. The second mounting groove 1216 communicates with the receiving space 103 and is used to install functional devices such as memory cards, SIM cards, and speakers. It is understood that by providing a second mounting groove 1216 connected to the receiving space 103 on the chassis 121, the functional devices such as memory cards, SIM cards, and speakers installed in the second mounting groove 1216 overlap with the chassis 121 in the thickness direction of the device body 10, which is beneficial for the thinning of the device body 10. At the same time, the second mounting groove 1216 communicating with the receiving space 103 makes the receiving space 103 larger, accommodating more functional devices. This allows the wearable device 100 of this application to load more functional modules, thereby achieving more functions and improving the user experience.

[0133] Of course, in other embodiments, the first mounting slot 1213 and the second mounting slot 1216 may also be provided on other structures such as the frame 122, or the chassis 121 may not be provided with the second mounting slot, and functional devices such as memory cards, SIM cards and speakers may be directly installed on the top surface by adhesive bonding.

[0134] Please refer to the following: Figure 6 , Figure 7 and Figure 8 , Figure 8 yes Figure 1 The diagram shows the installation of the airbag 24, air pump 14, and air pressure sensor 15 of the wearable device.

[0135] In this embodiment, the first mounting groove 1213 may also be provided with a first connecting hole 1217 and a second connecting hole 1218 that connects to the receiving space 103. The first connecting hole 1217 and the second connecting hole 1218 are spaced apart, and both the first connecting hole 1217 and the second connecting hole 1218 penetrate the top surface 1211 and the groove wall of the first mounting groove 1213. The air pump 14 includes a first air nozzle 141, and the air pressure sensor 15 includes a second air nozzle 151. The first air nozzle 141 passes through the first connecting hole 1217 and communicates with the second connecting end 212 of the airbag 24. The second air nozzle 151 passes through the second connecting hole 1218 and communicates with the second connecting end 212 of the airbag 24.

[0136] In this embodiment, the second connection end 212 of the airbag 24 is provided with a first connector 241 and a second connector 242. The first connector 241 and the second connector 242 are connected to the interior of the airbag 24. The first connector 241 is connected to the first air nozzle 141 of the air pump, and the second connector 242 is connected to the second air nozzle 151 of the air pressure sensor 15.

[0137] In some embodiments, the first connector 241 can pass through the first connecting hole 1217 and be inserted into the first air nozzle 141 to establish an air passage connection between the airbag 24 and the air pump 14, allowing the air pump 14 to fill or discharge gas into the airbag 24 through the first connecting hole 1217. The second connector 242 can pass through the second connecting hole 1218 and be inserted into the second air nozzle 151 to establish an air passage connection between the airbag 24 and the pressure sensor 15, allowing the pressure sensor 15 to sense pressure changes within the airbag 24, obtain internal pressure data, and transmit the pressure data to the processor.

[0138] Of course, in one implementation scenario of other embodiments, the air pump 14 and the air pressure sensor 15 can also be connected to the airbag 24 through other connection methods. This application does not limit the connection method between the air pump 14 and the air pressure sensor 15 and the airbag 24.

[0139] In another implementation scenario of other embodiments, the first connecting hole 1217 and the second connecting hole 1218 may also be provided in other positions besides the first mounting groove 1213. This application does not limit the specific positions of the first connecting hole 1217 and the second connecting hole 1218.

[0140] like Figure 6 The chassis 121 may also include a through hole 51 extending through the top surface 1211 and the bottom surface 1212. The through hole 51 is used to install related components of the wearable device 100, such as a photoplethysmograph (PPG) sensor.

[0141] Please refer to it again. Figure 4 In this embodiment, the display screen 13 includes a display panel and a cover plate fixed to the display panel. The cover plate can be made of lens materials such as glass. The display panel can be an LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode) display, AMOLED (Active-Matrix Organic Light-Emitting Diode) display, FLED (Flexible Light-Emitting Diode) display, Mini LED, Micro LED, Micro OLED, QLED (Quantum Dot Light-Emitting Diodes), etc.

[0142] The display panel can also integrate touch functionality, meaning it's a touch-sensitive display panel that can function as both an input device and an output device. In other words, the display screen 13 is a touchscreen. The display panel is electrically connected to the motherboard 16. The display panel generates touch signals and transmits them to the motherboard 16. The motherboard 16 receives the touch signals and controls the opening of the application software (App) in the main device 10 based on these signals. For example, a user can select to open or edit a graphic by touching or pressing a location on the display screen 13. Alternatively, the display panel can also receive data signals from the motherboard 16 and display the user's measured blood pressure value.

[0143] like Figure 4 In some embodiments, a drive circuit 161 and a processor 162 may be coupled to the motherboard 16. The drive circuit 161 is used to drive the components electrically connected to the motherboard 16. The processor 162 may specifically be a microcontroller unit (MCU), which can be the nerve center and command center of the wearable device 100. The processor 162 can generate operation control signals according to the instruction opcode and timing signals to complete the control of instruction fetching and execution.

[0144] In addition, the motherboard 16 can also integrate basic modules such as a storage module, interactive hardware, and a wireless module. Multiple modules are electrically connected to the processor 162 to control and implement their functions. It is understood that the air pump 14 is electrically connected to the processor 162 to receive control signals sent by the processor 162 and, based on these control signals, inflate or deflate the airbag 24. The pressure sensor 15 is electrically connected to the processor 162 to receive control signals sent by the processor 162 and, based on these control signals, detects the pressure signal inside the airbag 24, converting the pressure signal into an electrical signal.

[0145] The pressure sensor 15 can be a capacitive pressure sensor, which includes at least two parallel plates with conductive material. When a force is applied to the pressure sensor 15, the capacitance between the electrodes changes, and the processor 162 can determine the intensity of the internal pressure of the airbag 24 based on the change in electrode capacitance. Of course, in other embodiments, the pressure sensor 15 can also be a resistive pressure sensor or an inductive pressure sensor, etc.

[0146] like Figure 6 and Figure 7In this embodiment, the device body 10 further includes a photoplethysmograph (PPG) sensor 50, and the processor 162 may also be coupled with an active front end (AFE). The PPG sensor 50 is electrically connected to the processor 162 and the coupling unit on the processor 162. In some embodiments, the PPG sensor 50 is installed in a through-hole 51 and exposed in the device body 10. It is understood that when a user wears the wearable device 100, the PPG sensor 50 located on the chassis 121 can fit against the user's wrist to detect the user's pulse data.

[0147] In one implementation scenario of some embodiments, the PPG sensor portion is housed in the through hole 51, such that the PPG sensor 50 overlaps with the device body 10 in the thickness direction, which is beneficial to reducing the thickness of the device body 10 and making the device body 10 thinner.

[0148] Please see Figure 3A , Figure 9A and Figure 9B , Figure 9A yes Figure 3A The diagram shows a cross-sectional view of the main body 10 of the device along the BB direction. Figure 9B yes Figure 9A The diagram shows the structure of the main body of the device and the airbag wristband.

[0149] The blood pressure measuring assembly 100 also includes an airbag blocking member 30, which is installed inside the device body 10 and located near the second side 102. The airbag blocking member 30 cooperates with the connecting shaft 11 to block the airbag 24 of the airbag wristband 20, dividing the airbag 24 into an effective segment and an ineffective segment. The effective segment is from the second connecting end 212 of the airbag 24 to the portion where the airbag 24 abuts against the connecting shaft 11, while the ineffective segment is the remaining portion of the airbag 24. In other words, the effective segment is the part of the airbag 24 that fits against the user's wrist, and the ineffective segment is the part of the airbag 24 that does not fit against the user's wrist.

[0150] Understandably, when the airbag 24 is divided into an effective segment and an ineffective segment, the air pump 15 can inflate the effective segment, causing the effective segment of the airbag 24 to expand and compress the user's radial and ulnar arteries, thus completing the blood pressure measurement. The air pump 15 cannot inflate the ineffective segment. The length of the effective segment is the effective length of the airbag.

[0151] When a user puts on the wearable device 100 and starts blood pressure measurement, the airbag blocking component 30 compresses the airbag wristband 20 and holds the airbag wristband 20 against the connecting shaft 11, causing the airbag 24 located on one side of the airbag wristband 20 to form an effective segment and an ineffective segment at the connecting shaft 11. It should be noted that the effective length of the airbag is different when users with different wrist circumferences wear the wearable device.

[0152] It's understandable that the wearable device 100 obtains accurate blood pressure values ​​only if the airbag 24 of the wristband 20 fully covers the radial and ulnar arteries of the user's wrist. However, if the airbag is designed to cover both arteries to meet the blood pressure measurement needs of users with different wrist sizes, then for users with smaller wrists, there will be excess airbag after covering the wrist. This excess airbag would need to be wrapped around the wrist, inevitably getting caught in the bottom of the device, affecting the user experience. Alternatively, existing wearable devices are equipped with multiple airbags of different lengths. Users select the corresponding airbag according to their wrist size, assemble it themselves, and then input the corresponding airbag configuration on the device to call the corresponding blood pressure algorithm library for blood pressure measurement. An error in any of these steps can cause significant blood pressure measurement errors, thus placing high demands on the user and resulting in poor usability.

[0153] When a user wears the wearable device 100 of this application, the user can adjust the length of the part of the airbag wristband 20 that fits against the user's wrist by passing the second end 22 of the airbag wristband 20 through the space between the second side 102 and the connecting shaft 11, and by using the airbag blocking member 30 to hold the airbag wristband 20 against the connecting shaft 11. This allows for adjustment of the effective length of the airbag 24 of the airbag wristband 20, ensuring that the airbag 24 of the airbag wristband 20 fully covers the radial and ulnar arteries of the user's wrist. Then, the airbag blocking member blocks the airbag. In other words, the wearable device 100 of this application can be used with a single model of airbag wristband to suit users with different wrist sizes. Users with different wrist sizes can adjust the airbag wristband to a suitable length themselves, avoiding errors caused by mismatch between the wrist size and the length of the airbag 24, improving the accuracy of blood pressure measurement, obtaining accurate blood pressure values, and reducing costs. Meanwhile, since the wearable device 100 of this application can adjust the length of the airbag wristband 20, the airbag wristband 20 can fit the user's wrist more closely, and the effective segment of the airbag 24 can just cover the radial and ulnar arteries of the user's wrist. Compared with the existing wristbands, where the airbag may not completely cover or partially overlap the radial and ulnar arteries of the user's wrist during wear, the blood pressure measurement accuracy of the wearable device 100 provided by this application is higher.

[0154] In this embodiment, the airbag blocking component 30 can be implemented in several ways. In one implementation, the airbag blocking component 30 can automatically block the airbag 24. In another implementation, the airbag blocking component 30 can be manually operated to block the airbag 24. The first implementation of the airbag blocking component 30 will be described in detail below.

[0155] Please refer to the following: Figure 3A and Figure 9B In this embodiment, the airbag blocking member 30 may include a blocking part 31, a driving part 32, and a transmission part 35. The blocking part 31 is disposed on the surface of the second side 102 facing the connecting shaft 11, the driving part 32 is disposed in the receiving space 103, and the transmission part 35 is connected between the driving part 32 and the blocking part 31. The transmission part 35 is used to transmit the driving force of the driving part 32 to the blocking part 31, so as to drive the blocking part 31 to hold the airbag wristband 20 against the connecting shaft 11, thereby blocking the airbag 24. Of course, in other embodiments, such as Figure 10 The airbag blocking component 30 may also include only the blocking part 31 and the driving part 32, with the driving part 32 directly driving the blocking part 31 to block the airbag 24.

[0156] For example, the device body 10 also includes a connecting hole 36, which connects the interior and exterior of the device body 10. The connecting hole 36 is located on the second side 102 and connects the surface of the second side 102 facing the connecting shaft 11 with the receiving space 103. A transmission part 35 is provided in the connecting hole 36, and its two ends are respectively connected to the driving part 32 and the blocking part 31. In this embodiment, by providing a connecting hole 36 that penetrates the interior and exterior of the device body 10, communication between the receiving space 103 and the exterior of the device body 10 is achieved, so that the driving force of the driving part 32 located in the receiving space 103 can be transmitted to the blocking part 31 located outside the device body 10 through the transmission part 35 provided in the connecting hole 36. It can also be understood that if the connecting hole 36 is not provided, the driving part 32 can only be provided on the exterior of the device body 10, which affects the aesthetics of the device body 10. In this embodiment, by providing a connecting hole 36, the driving part 32 can be housed in the receiving space 103, which improves the integration of the product and also benefits the aesthetics of the product's appearance. Of course, in other embodiments, the device body 10 may not have a connecting hole, and the drive unit 32 may be located outside the device body 10.

[0157] Please see Figure 11 and Figure 12 , Figure 11 yes Figure 9B The diagram shows the structure of the airbag blocking component 30 of the main body 10 of the device in the non-blocking state. Figure 12 yes Figure 9B The diagram shows the structure of the airbag blocking component 30 of the main body 10 of the device in the blocking state.

[0158] When the user wears the wearable device 100 but does not activate blood pressure measurement, the airbag blocking member 30 is in an unblocked state. At this time, there is space between the blocking part 31 and the connecting shaft 11, allowing the airbag wristband 20 to pass through. The airbag wristband 20 can move between the blocking part 31 and the connecting shaft 11, allowing the user to wear the wearable device 100 according to their wrist circumference. When the user activates blood pressure measurement, the airbag blocking member 30 is in a blocked state. At this time, the drive unit 32, controlled by the internal circuitry, drives the transmission unit 35, causing the transmission unit 35 to push the blocking part 31 to press the airbag wristband 20 against the connecting shaft 11 and compress the airbag 24. This causes the airbag 24 to be divided at the connecting shaft 11 into an effective section (the part of the airbag 24 connecting the air pump 14 and the pressure sensor 15) and an ineffective section (the part of the airbag 24 that cannot be inflated). Thus, the air pump 15 can inflate the effective section to measure the user's blood pressure.

[0159] In this embodiment, the driving unit 32 can specifically be a stepper motor, the transmission unit 35 can specifically be a transmission shaft, and the blocking part 31 and the connecting shaft 11 can be cuboid structures. When the user initiates blood pressure measurement, the stepper motor, controlled by the internal circuit, drives the transmission shaft to rotate in a first direction, pushing the blocking part 31 closer to the airbag wristband 20, and holding the airbag wristband 20 against the connecting shaft. After the user finishes blood pressure measurement, the stepper motor, controlled by the internal circuit, drives the transmission shaft to rotate in a second direction, moving the blocking part 31 away from the airbag wristband 20, wherein the second direction is opposite to the first direction.

[0160] like Figure 11 The surface of the blocking part 31 facing the connecting shaft 11 is the first surface 33, and the surface of the connecting shaft 11 facing the blocking part 31 is the second surface 111. In this embodiment, the first surface 33 and the second surface 111 are fitted cuboid shapes. That is, when the blocking part 31 holds the airbag wristband 20 against the connecting shaft 11, the airbag wristband 20 is clamped between the first surface 33 and the second surface 111. When the first surface 33 and the second surface 111 are fitted, the first surface 33 and the second surface 111 can fit together with the largest possible area, so that the blocking effect of the airbag blocking member 30 on the airbag wristband 20 is maximized.

[0161] Please see Figure 13 , Figure 14 and Figure 15A , Figure 13 yes Figure 9B The diagram shows the structure of the airbag blocking component 30 of the main body 10 of the device in other embodiments. Figure 14 yes Figure 13 The diagram shown is a structural schematic of the airbag blocking component 30 in one embodiment of another. Figure 15A yes Figure 13The diagram shows the structure of the airbag blocking component 30 in another embodiment of the invention.

[0162] In some implementations, such as Figure 13 The connecting shaft 11 can also be cylindrical, and the blocking part 31 can be an inwardly recessed structure adapted to the connecting shaft 11. Both the first surface 33 and the second surface 111 are curved surfaces. It is understandable that, for the same volume, when the first surface 33 and the second surface 111 are curved surfaces, their contact area is maximized, resulting in the largest compression area of ​​the blocking part 31 and the connecting shaft 11 on the airbag 24, and thus the best blocking effect on the airbag 24. At the same time, the cylindrical connecting shaft 11 is easier to process, which helps reduce manufacturing costs.

[0163] In one implementation scenario of some implementation methods, such as Figure 14 The blocking portion 31 can also be spherical, and the connecting shaft 11 can also be an inwardly recessed structure adapted to the blocking portion 31, with both the first surface 33 and the second surface 111 being arc surfaces. In another implementation scenario of some embodiments, such as Figure 15A The connecting shaft 11 can also be a regular hexagonal prism, and the blocking part 31 can also be an inwardly recessed structure adapted to the connecting shaft 11. The first surface 33 and the second surface 111 are both polygons. This application does not limit the specific shape of the blocking part 31 and the connecting shaft 11.

[0164] In other embodiments, such as Figure 15B The connecting shaft 11 can also be slidably mounted on the second side 102. The airbag blocking component 30 includes a driving part 32 and a blocking part 31. The blocking part 31 is connected between the connecting shaft 11 and the driving part 32. The driving part 32 can drive the blocking part 31 to move the connecting shaft 11 closer to the second side 102, thereby blocking the airbag.

[0165] The second embodiment of the airbag blocking component 30 will be described in detail below.

[0166] Please refer to the following: Figure 16 and Figure 17 , Figure 16 yes Figure 9A A schematic diagram of another embodiment of the airbag blocking component 30 and its cooperation with the main body 10 of the device. Figure 17 yes Figure 16 The diagram shows the structure of the sliding connection 40 blocking the airbag 24.

[0167] The structure of this embodiment and Figure 9AThe structures of the embodiments described are largely the same, and the identical parts will not be repeated. The difference is that the airbag blocking component in this embodiment is a sliding connection part 40, and the connecting shaft 11 cooperates with the sliding connection part 40. For example, one side of the sliding connection part 40 connects to both ends of the connecting shaft 11, and the other side slides to the second side 102 of the device body 10. That is, the connecting shaft 11 is connected to the second side 102 through the sliding connection part 40. The airbag wristband 20 passes through the space between the connecting shaft 11 and the second side 102. The sliding connection part 40 can drive the connecting shaft 11 closer to the second side 102 to hold the airbag wristband 20 against the second side 102, blocking the airbag 24 of the airbag wristband 20.

[0168] It is understandable that, such as Figure 16 When a user wears the wearable device 100, the user can adjust the length of the part of the airbag wristband 20 that fits against the user's wrist by passing the second end 22 of the airbag wristband 20 through the space between the connecting shaft 11 and the second side 102. This makes the length of the fitting part closer to the user's wrist circumference, fully covering the radial and ulnar arteries of the user's wrist. This avoids the error that may be caused to the blood pressure measurement results when the user installs an airbag that is not suitable for their own wrist circumference and length, thus improving the accuracy of blood pressure measurement.

[0169] like Figure 17 When the user initiates blood pressure measurement, they can manually push the sliding connector 40 closer to the second side 102, causing the airbag wristband 20 to abut against the second side 102. At this time, the sliding connector 40 cooperates with the connecting shaft 11 to block the airbag 24 of the airbag wristband 20, dividing the airbag 24 into an effective segment and an ineffective segment. The effective segment is from the second connecting end 212 of the airbag 24 to the portion where the airbag 24 abuts against the connecting shaft 11, while the ineffective segment is the remaining portion of the airbag 24.

[0170] Understandably, since the sliding connection 40 in this embodiment blocks the airbag wristband 20 through manual operation, compared to the electrically driven sliding connection 40 blocking the airbag 24, it reduces the need for the drive unit 32 and transmission unit 35, which is beneficial for product miniaturization. Furthermore, manual operation is more energy-efficient than electric drive, which helps enhance the product's battery life and reduce manufacturing costs.

[0171] Please refer to the following: Figure 16 , Figure 17 and Figure 18 , Figure 18 yes Figure 15A The diagram shows the structure of the sliding connection part 40 cooperating with the connecting shaft 11.

[0172] The sliding connection 40 may include a body 41 and two extensions 42 connected to both ends of the body 41. A portion of each extension 42 facing away from the body 41 is connected to both ends of the connecting shaft 11. The sliding connection 40 and the connecting shaft 11 form a fixing hole 43 through which the airbag wristband 20 can pass. Each extension 42 has a mating groove 44, and a limiting member is provided on the second side 102, which is confined within the mating groove 44 to fix the sliding connection 40 to the second side 102. In other embodiments, the sliding connection 40 may have other structures, as long as they achieve the purpose of blocking the airbag 24.

[0173] In this embodiment, the connecting shaft 11 and the sliding connecting part 40 are integrally formed, which ensures the connection strength between the connecting shaft 11 and the sliding connecting part 40 and simplifies the product assembly steps. Of course, in other embodiments, the connecting shaft and the sliding connecting part can also be connected and fixed by other methods such as bonding or snap-fitting.

[0174] In some embodiments, the fixing hole 43 of the sliding connection 40 is small enough to allow the airbag wristband 20 to pass through without compressing the airbag 24, so that after the airbag wristband 20 passes through the fixing hole 43, the surface of the airbag wristband 20 can contact the surfaces of the second side 102 and the connecting shaft 11, increasing the friction between the airbag wristband 20 and the second side 102 and the connecting shaft 11, so that the airbag wristband 20 can be more stably fixed to the second side 102, avoiding the phenomenon of the airbag wristband 20 sliding or loosening, and making the airbag wristband 20 fit the user's wrist more closely during wearing, thus improving the wearing experience.

[0175] Understandably, when a user wears the wearable device 100, after the user passes the airbag wristband 20 through the fixing hole 43, the sliding connection part 40 can drive the connecting shaft 11 closer to the second side 102, and hold the airbag wristband 20 against the second side 102, blocking the airbag 24 of the airbag wristband 20, and fixing the airbag wristband 20 to the second side 102. When the airbag wristband 20 is divided into an effective segment and an ineffective segment, the air pump 15 can inflate the effective segment, causing the effective segment of the airbag 24 to expand and compress the user's radial and ulnar arteries to complete the blood pressure measurement. The air pump 15 cannot inflate the ineffective segment. The length of the effective segment is the effective length of the airbag.

[0176] Please see Figure 16 , Figure 19 and Figure 20A , Figure 19 yes Figure 15A The diagram shows the structure of the sliding connection part 40 with the mating groove 44 and the limiting member 45. Figure 20A yes Figure 19 The diagram shows the structure in which the sliding connection part 40 is separated from the mating groove 44 and the limiting member 45.

[0177] In some embodiments, the device body 10 may further include a snap button 46 disposed on the surface of the second side 102 facing the display screen 13. The snap button 46 is connected to a sliding connection 40, and when the snap button 46 is pressed, the sliding connection 40 will move downward together with the snap button 46. Of course, in other embodiments, the snap button may also be disposed at other positions on the device body 10.

[0178] like Figure 20A As shown, when the user presses the snap button 46, the sliding connection part 40 will move downward along with the snap button 46, so that the mating groove 44 of the sliding connection part 40 no longer engages with the limiting member 45 of the second side 102, so that the sliding connection part 40 is no longer fixed to the second side 102. At this time, the user can move the sliding connection part 40 away from the second side 102 to adjust the length of the airbag wristband 20 or remove the airbag wristband 20 from the fixing hole 43, thereby removing the wearable device 100.

[0179] It is understood that by providing a snap 46 for connecting the sliding connection part 40 on the second side 102 of the device body 10, the operation of fixing and separating the sliding connection part 40 on the second side 102 is simpler and easier to operate, thus improving the user's wearing experience. Of course, in other embodiments, the sliding connection part 40 can also be fixed to the second side 102 in other ways, and this application does not limit the way the sliding connection part 40 is fixed to the second side 102.

[0180] In other embodiments, such as Figure 20B The connecting shaft 11 can be directly installed on the second side 102, and a gap is formed between the connecting shaft 11 and the second side 102 for the airbag and wristband to pass through. The body 41 of the sliding connecting part 40 is located between the second side 102 and the airbag, and the two extensions 42 of the sliding connecting part 40 are slidably connected to the second side 102. By pushing the body 41 of the sliding connecting part toward the airbag, the airbag can be held between the connecting shaft 11 and the body 41, thereby blocking the airbag.

[0181] In other embodiments, the airbag blocking element can be any other structure, as long as it can block the airbag.

[0182] Please refer to the following: Figure 21 , Figure 22 and Figure 23 , Figure 21 yes Figure 1 The diagram shows the structure of the wearable device 100 with its length sensing module 70, airbag blocking component 30, and airbag wristband 20 in cooperation. Figure 22 yes Figure 21 This is a schematic diagram of another embodiment of the cooperation between the length sensing module 70, the airbag blocking component 30, and the airbag wristband 20. Figure 23 yes Figure 21 The diagram shown illustrates the working principle of the length sensing module 70.

[0183] In this embodiment, the wearable device 100 may further include a length sensing module 70 for automatically measuring the length of the effective segment of the airbag wristband 20, i.e., the effective length of the airbag. The length sensing module 70 includes a first electrode 71, a second electrode 72, and a flexible resistive film 73. The flexible resistive film 73 covers the surface of the airbag 24 away from the wristband 23. The first electrode 71 is disposed on the side of the flexible resistive film 73 near the first side 101 and is electrically connected to the flexible resistive film 73. The second electrode 72 is fixed to the blocking portion 31 or the surface of the second side 102 facing the airbag 24. The second electrode 72 is used to electrically connect to the flexible resistive film 73 when the blocking portion 31 blocks the airbag 24. The main board 16 may also integrate a circuit board 163, which is electrically connected to the first electrode 71, the second electrode 72, and the processor 162. The wearable device is used to determine the effective length of the airbag 24 by obtaining the resistance of a portion of the flexible resistive film 73 between the first electrode plate 71 and the second electrode plate 72 when the blocking part 31 blocks the airbag 24.

[0184] exist Figure 21 In the embodiment shown, the second electrode 72 is disposed on the surface of the blocking part 31 facing the airbag 24. When the airbag blocking member 30 is activated, the blocking part 31 holds the airbag wristband 20 against the connecting shaft 11. At this time, the second electrode 72 fixed to the surface of the blocking part 31 facing the airbag 24 is electrically connected to the flexible resistive film 73.

[0185] exist Figure 22 In this embodiment, the second electrode 72 is disposed on the surface of the second side 102 facing the airbag 24, and the airbag blocking member 30 is a sliding connection part 40. When the sliding connection part 40 is working, the sliding connection part 40 will push the connecting shaft 11 to hold the airbag wristband 20 against the second side 102. At this time, the second electrode 72 fixed on the surface of the second side 102 facing the airbag 24 is electrically connected to the flexible resistive film 73.

[0186] Understandably, when the airbag blocking component 30 is activated, it holds the airbag wristband 20 against the connecting shaft 11 or the second side 102. At this time, the second electrode 72, fixed to the surface of the blocking part 31 or the second side 102 facing the airbag 24, is electrically connected to the flexible resistive film 73. The resistance between the first electrode 71 and the second electrode 72 can be measured by the circuit board 163 built into the device body 10, and the processor 162 calculates the length from the first electrode 71 to the second electrode 72, which is the effective length of the airbag.

[0187] The wearable device 100 of this application incorporates the data from the barometric pressure sensor 15 and the effective length of the airbag into a blood pressure algorithm model, which then calculates the measured blood pressure value. Compared to calculating based solely on the data from the barometric pressure sensor 15, considering both the data from the barometric pressure sensor 15 and the effective length of the airbag results in a more accurate blood pressure algorithm model and more precise calculated blood pressure data.

[0188] In some embodiments, the length sensing module 70 may further include a voltage regulator chip and an analog-to-digital converter (ADC). Both the voltage regulator chip and the ADC are located within the housing space 103 of the device body 10. The two ends of the voltage regulator chip are electrically connected to the battery 17 and the flexible resistive film 73, respectively. The two ends of the ADC are electrically connected to the flexible resistive film 73 and the processor 162, respectively. The voltage regulator chip protects the circuit from damage caused by voltage pulses. Simultaneously, the voltage regulator chip also functions to adjust and transform the voltage, preventing excessive voltage from burning out the circuit, thus protecting the entire circuit system of the wearable device 100 and reducing the risk of failure. The ADC converts continuous analog signals in the circuit into discrete digital signals and transmits them to the processor 162 for calculation.

[0189] It is understood that, since the length between the first electrode plate 71 and the second electrode plate 72 in this embodiment is variable, the flexible resistive film 73 in this embodiment can be equivalent to a variable resistor. That is, the resistance change of the flexible resistive film 73 is significantly correlated with the length between the first electrode plate 71 and the second electrode plate 72. For example... Figure 23 As shown, circuit board 163 transmits a stable voltage to flexible resistive film 73 through a voltage regulator chip. The ADC converts the different resistance signals of flexible resistive film 73 into digital signals and transmits them to processor 162. Processor 162 calculates the effective length of the airbag based on these digital signals. Alternatively, in other embodiments, motherboard 16 can also integrate a controller. The ADC converts the different resistance signals of flexible resistive film 73 into digital signals and transmits them to the controller. The controller calculates the effective length of the airbag based on these digital signals and transmits the data to processor 162.

[0190] In some embodiments, the flexible resistive film 73 needs to have a certain degree of flexibility so as not to affect the expansion of the airbag. The material of the flexible resistive film 73 can be constantan alloy, manganese bronze alloy, or carbon resistive material. Of course, in other embodiments, the required flexible resistive film 73 can also be formed by spraying or in a flexible fabric. This application does not limit the material and formation method of the flexible resistive film 73.

[0191] Of course, in other embodiments, the wearable device 100 may not include a length sensing module. The wearable device 100 may also manually obtain the effective length of the airbag and manually input its value to the processor 162 via the display screen 13 or the button 18.

[0192] The above text describes the structure of a wearable device 100. The following text will describe the physiological parameter measurement method of the wearable device 100 in detail, taking the blood pressure measurement method as an example.

[0193] Please refer to the following: Figure 24 and Figure 25 , Figure 24 yes Figure 1 The diagram shows the functional modules of the wearable device 100. Figure 25 yes Figure 1 The flowchart illustrates the method for measuring physiological parameters of the wearable device 100. The method for measuring physiological parameters of the wearable device 100 is as follows: steps S110 to S160.

[0194] S110: Start blood pressure measurement.

[0195] Specifically, before starting blood pressure measurement, the user first wears the wearable device 100 and adjusts the tightness according to their wrist circumference. For example, after wearing the wearable device 100, the user adjusts the airbag wristband 20 to a suitable length according to their own wrist circumference, so that the airbag 24 can completely fit the ulnar and radial arteries of the user's wrist.

[0196] Next, a first operation is detected, which acts on the wearable device. This first operation can be the user touching the virtual function key for measuring blood pressure on the display screen 13, causing the wearable device 100 to activate its blood pressure measurement function. Alternatively, in other embodiments, the user can also activate the blood pressure measurement function by operating a button 18 on the main body 10 of the device. Or, the wearable device can have a function to set the time for blood pressure measurement; the user sets a predetermined time for blood pressure measurement on the wearable device. When the measurement method determines that the wearable device has reached the predetermined time, the blood pressure measurement function is activated. This allows the user to set the required time and frequency of blood pressure measurement as needed, improving the user experience.

[0197] In some embodiments, after the user initiates blood pressure measurement, the measurement method further includes determining whether the wearable device is being worn. Specifically, when the wearable device includes a PPG sensor, the PPG sensor can be used to detect whether the wearable device is being worn. When the wearable device does not include a PPG sensor, since the pressure rise curve of the airbag inflation is different when the wearable device is worn and not worn, inflation of the airbag can be used to determine whether the wearable device is being worn. It should be noted that if inflation of the airbag is used to determine whether the wearable device is being worn, this determination step should be performed after step S120. Of course, in other embodiments, when the wearable device includes a PPG sensor, inflation of the airbag can also be used to determine whether the wearable device is being worn.

[0198] In some implementations, after the user initiates blood pressure measurement, the measurement method further includes determining whether the airbag is connected to the device body. For example, a Hall sensor can be installed on the wearable device to check whether the airbag is connected to the device body. Alternatively, the airbag can be inflated to determine whether it is connected to the device body. It should be noted that the step of inflating the airbag to determine whether it is connected to the device body should be performed after step S120. Of course, other methods can also be used to determine whether the airbag is connected to the device body.

[0199] S120: Control airbag blocking component 30 to block airbag 24.

[0200] Specifically, when the processor detects a signal to initiate blood pressure measurement, it transmits a control signal to the airbag blocking member 30. The airbag blocking member 30 holds the airbag wristband 20 against the connecting shaft 11, thus blocking the airbag 24. Specifically, the driving part 32 of the airbag blocking member 30 drives the blocking part 31 to hold the airbag wristband 20 against the connecting shaft 11, dividing the airbag wristband 20 into an effective segment and an ineffective segment. At this time, the airbag 24 is blocked, forming an effective segment and an ineffective segment; the length of the effective segment is the effective length of the airbag.

[0201] For example, the processor can control the drive unit 32 to drive the blocking unit 31 to move toward the airbag wristband 20, and hold the airbag wristband 20 against the connecting shaft 11. The distance the drive unit 32 drives the blocking unit 31 to move toward the airbag wristband 20 is a first distance. The specific value of this first distance can be obtained empirically. When the blocking unit 31 moves toward the airbag wristband 20 by the first distance, the airbag 24 is blocked into an effective segment and an ineffective segment, and the drive unit 32 stops driving the blocking unit 31.

[0202] The signal to initiate blood pressure measurement can be that the user touches the virtual function key for measuring blood pressure on the display screen 13. When the processor receives confirmation that the user has touched the virtual function key, it considers that the signal to initiate blood pressure measurement has been detected. Alternatively, the signal to initiate blood pressure measurement can also be that the user activates the blood pressure measurement function module in the wearable device 100 via operation button 18. When the processor receives confirmation that the user has activated the blood pressure measurement function module in the wearable device 100, it considers that the signal to initiate blood pressure measurement has been detected. Alternatively, the measurement method can initiate blood pressure measurement when it determines that the wearable device has reached a predetermined time.

[0203] Of course, in embodiments where the driving part of the airbag blocking component can drive the connecting shaft to move closer to or away from the second side, the processor can control the driving part to drive the connecting shaft toward the second side and hold the airbag wristband 20 against the second side to block the airbag. Alternatively, in other embodiments, the wearable device can also prompt the user to manually block the airbag via a display screen.

[0204] S130: Measure the effective length of the airbag.

[0205] Specifically, when the processor detects that the airbag blocking component 30 blocks the airbag 24, the processor transmits a control signal to the length sensing module 70, activating the length sensing module 70 and measuring the effective length of the airbag. The circuit board 163 built into the main body 10 measures the resistance between the first electrode plate 71 and the second electrode plate 72 in the length sensing module 70, and the processor calculates the length between the first electrode plate 71 and the second electrode plate 72 to determine the effective length of the airbag.

[0206] For example, the method for determining the effective length of the airbag is as follows: When the airbag blocking component 30 blocks the airbag 24, current is applied to the first path, and the current value flowing through the first path is determined. The first path consists of a circuit board 163, a first electrode plate 71, a second electrode plate 72, and at least a portion of a flexible resistive film 73. The voltage value between the first electrode plate 71 and the second electrode plate 72 is determined. The resistance value of at least a portion of the flexible resistive film 73 is determined based on the current value and the voltage value. The effective length of the airbag 24 is determined based on the resistance value. It should be noted that after obtaining the resistance value, it is confirmed whether the resistance value is a valid resistance value, that is, whether the resistance value is within the normal resistance value range. If the resistance value is a valid resistance value, the current application to the first path is stopped. If the resistance value is a wireless resistance value, the valid value is obtained again, or the user is reminded to check whether there is a problem with the wearable device.

[0207] Of course, in some embodiments, the user can also manually measure the effective length of the airbag and input the data into the processor. For example, when the user starts blood pressure measurement, a dialog box will pop up on the display screen 13 asking "Do you want to manually measure the effective length of the airbag?" If the user confirms the use of manual measurement, they can click "Yes". After receiving the signal from the user confirming the use of manual measurement, the processor will transmit a control signal to the display screen 13 and pop up a new dialog box "Please enter measurement data". At this time, after the airbag blocking component 30 blocks the airbag 24, the user can measure the effective length of the airbag using a measuring tape or other length measuring tools and input the measured data into the dialog box.

[0208] S140: Inflate airbag 24 and check the air pressure inside airbag 24.

[0209] Specifically, after the airbag 24 is blocked, the air pump 14 and the pressure sensor 15 are activated. The air pump 14 inflates the airbag 24 using a linear pressure boosting control algorithm, and the pressure sensor 15 acquires the pressure data of the airbag 24 from the start to the end of inflation. The processor calculates the measured blood pressure value based on the acquired pressure data from the pressure sensor 15 and the effective length of the airbag using a blood pressure algorithm model. Compared to calculating based solely on the data from the pressure sensor 15, considering both the pressure data from the pressure sensor 15 and the effective length of the airbag results in a more accurate blood pressure algorithm model and more precise calculated blood pressure data. Furthermore, because the length of the airbag wristband 20 in the wearable device 100 is adjustable, it can fully cover the radial and ulnar arteries of the user's wrist, with the effective segment precisely covering them. This more accurate data on the effective length of the airbag leads to a more precise final calculation result that better reflects the user's actual blood pressure.

[0210] It should be noted that the time taken for different users to start and finish inflating the airbag varies. When the processor determines that the air pressure data is complete through the algorithm, it controls the air pump to stop inflating the airbag.

[0211] Of course, in other embodiments, the processor may activate the air pump 14 and the air pressure sensor 15 after receiving the effective length data of the airbag. Step S140 may also be performed after step S150, or steps S140 and S150 may be performed simultaneously.

[0212] S150: Blood pressure value is determined based on air pressure value.

[0213] Specifically, the conclusion of blood pressure measurement can be determined based on whether a blood pressure value has been obtained, or on whether the user's converted blood pressure data has been acquired. For example, when the blood pressure value is calculated by substituting the acquired blood pressure data into the blood pressure algorithm model and sent by the processor to the display screen 13 for the user to view, the blood pressure measurement is considered complete. Alternatively, the blood pressure measurement can also be considered complete when all blood pressure data has been acquired. When the blood pressure measurement is determined to be complete, the processor shuts off the air pump 14 and the pressure sensor 15, and releases the gas from the air bag 24.

[0214] S160: After the blood pressure measurement is completed, control the airbag blocking element 30 to move away from the airbag wristband 20.

[0215] Specifically, the processor controls the airbag blocking element 30 to move away from the airbag wristband 20 by determining whether the internal air pressure of the airbag 24 has dropped below a threshold. For example, when the processor determines that the internal air pressure of the airbag 24 has dropped to, for example, 5 mmHg or below, the processor transmits a control signal to the airbag blocking element 30. At this time, the drive unit 32 drives the blocking part 31 away from the airbag wristband 20, returning it to its initial position, so that the airbag wristband 20 returns to the non-blocking state. It can be understood that when the internal air pressure of the airbag 24 drops to 5 mmHg or below, it can ensure that the gas inside the effective segment will not flow back to the ineffective segment after the airbag blocking element 30 returns to the non-blocking state, thus affecting the user's wearing experience. In other implementations, the airbag blocking element can be controlled to move away from the airbag wristband simply by acquiring blood pressure measurement data. That is to say, controlling the airbag blocking element to move away from the airbag wristband can be done simultaneously with turning off the air pump and the air pressure sensor.

[0216] It is understandable that when the airbag wristband 20 blocks arterial blood flow, due to the hemodynamic effect of the heartbeat, the pressure fluctuations synchronized with the heartbeat, i.e., the pulse wave, will overlap the pressure in the airbag 24. The oscillometric blood pressure measurement method estimates blood pressure based on the relationship between the pulse wave amplitude and the pressure in the airbag 24. The mean pressure corresponds to the maximum pulse wave value, and the systolic and diastolic pressures are calculated by adding the mean pressure to the corresponding proportions. According to the above measurement method, the airbag 24 is inflated by the air pump 14, allowing it to compress the radial and ulnar arteries in the user's wrist. This enables the pressure sensor 15 to acquire the pressure and pulse wave inside the airbag 24. The data obtained by the pressure sensor 15, along with the effective length of the airbag, is transmitted to the processor to calculate the blood pressure. Since the blood pressure measurement method of this application uses the effective length data of the airbag as an input parameter in addition to the pressure and pulse wave data inside the airbag 24, the accuracy of the blood pressure algorithm model of this application is further improved, which is beneficial to improving the accuracy of blood pressure measurement.

[0217] In other embodiments, the method for measuring physiological parameters of wearable devices may also include only steps S110, S120, and S130.

[0218] This application also provides an electronic device, including a processor and a memory, wherein the memory is used to store a computer program, and the processor invokes the computer program to execute the measurement method of any of the above embodiments.

[0219] This application also provides a computer-readable storage medium including computer instructions that, when executed on an electronic device, cause the electronic device to perform the measurement method of any of the above embodiments.

[0220] This application also provides a computer program product that, when run on a computer, causes the computer to perform the measurement method of any of the above embodiments.

[0221] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0222] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0223] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wearable device for measuring physiological parameters, characterized in that, Includes the main body of the device, connecting shaft, airbag wrist strap, and airbag blocking component, among which: The main body of the device has a first side and a second side that are arranged opposite to each other; The connecting shaft is mounted on the second side, and a gap is formed between the connecting shaft and the second side; The airbag wristband includes a wristband and an airbag, the airbag being at least partially stacked on one side of the wristband, and the airbag wristband having a first end and a second end. The first end includes a first connecting end of the wristband and a second connecting end of the airbag. The first connecting end is used to fix the first side, and the second connecting end is used to connect to the first side, so that the main body of the device can inflate or deflate the airbag through the second connecting end. The second end passes through the gap and is fixed to the wristband on the side opposite to the airbag; The airbag blocking component includes a blocking part and a driving part. The driving part is disposed in the main body of the device, and the blocking part is located outside the main body of the device. The driving part is used to drive the blocking part to move a preset distance toward the connecting shaft, so that the blocking part holds the airbag wristband against the connecting shaft. When the airbag is inflated, only the part of the airbag between the second connecting end and the blocking part is inflated.

2. The wearable device according to claim 1, characterized in that, The airbag blocking component also includes a transmission part, with the driving part and the blocking part connected to its two ends respectively, so as to transmit the driving force of the driving part to the blocking part.

3. The wearable device according to claim 2, characterized in that, The main body of the device is provided with a connecting hole, and the transmission part passes through the connecting hole.

4. The wearable device according to any one of claims 1-3, characterized in that, The blocking portion includes a first surface facing the connecting shaft, and the connecting shaft includes a second surface facing the blocking portion. When the blocking portion blocks the airbag wristband, the airbag wristband is clamped between the first surface and the second surface, and the shapes of the first surface and the second surface are adapted to each other.

5. The wearable device according to any one of claims 1-3, characterized in that, The wearable device further includes a length sensing module, which comprises a first electrode sheet, a second electrode sheet, a circuit board, and a flexible resistive film; wherein... The flexible resistive film covers the surface of the airbag on the side away from the wristband; The first electrode sheet is disposed on the side of the flexible resistive film near the second connection end and is electrically connected to the flexible resistive film; The second electrode is fixed to the surface of the blocking portion facing the airbag; the second electrode is used to electrically connect to the flexible resistive film when the blocking portion blocks the airbag. The circuit board is disposed inside the main body of the device and electrically connected to the first electrode plate and the second electrode plate; the wearable device is used to determine the length of the airbag between the first electrode plate and the second electrode plate by obtaining the resistance of the flexible resistive film between the first electrode plate and the second electrode plate when the blocking part holds the airbag wristband against the connecting shaft.

6. The wearable device according to any one of claims 1-3, characterized in that, The wearable device also includes a pressure sensor located inside the main body of the device, which is used to obtain the pressure data of the airbag.

7. The wearable device according to any one of claims 1-3, characterized in that, The wearable device also includes an air pump located inside the main body of the device, which is used to inflate the airbag.

8. The wearable device according to any one of claims 1-3, characterized in that, The wearable device also includes a processor located inside the main body of the device. The processor is used for, The drive unit is controlled to move the blocking unit a preset distance toward the connecting shaft; Inflate the airbag; The air pressure inside the airbag is detected, and the air pressure data of the airbag from the start of inflation to the end of inflation is obtained; The physiological parameters are determined based on the air pressure data; After the physiological parameters have been measured, the airbag is deflated. The drive unit is controlled to move the blocking unit in a direction away from the connecting shaft.

9. The wearable device according to claim 8, characterized in that, Before controlling the drive unit to move the blocking unit a predetermined distance toward the connecting shaft, the processor is further configured to: It is determined that the wearable device is in a worn state.

10. The wearable device according to claim 8, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to: The airbag is connected to the main body of the device.

11. The wearable device according to claim 8, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to: Determine the arrival time.

12. The wearable device according to claim 8, characterized in that, The wearable device also includes an input device for receiving user input. Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to: The input device is detected to have received a first operation, which is used to initiate the measurement of the physiological parameter.

13. The wearable device according to claim 8, characterized in that, The wearable device further includes a circuit board, a first electrode sheet, a second electrode sheet, and a flexible resistive film; wherein, The flexible resistive film covers the surface of the airbag on the side away from the wristband; The first electrode sheet is disposed on the side of the flexible resistive film near the second connection end and is electrically connected to the flexible resistive film; The second electrode is fixed to the surface of the blocking portion facing the airbag; the second electrode is used to electrically connect to the flexible resistive film when the blocking portion blocks the airbag. After the processor controls the driving unit to move the blocking unit a predetermined distance toward the connecting shaft, the processor is further configured to: Determine the current value flowing through the first path, which is composed of the circuit board, the first electrode sheet, the second electrode sheet, and at least a portion of the flexible resistive film; Determine the voltage value between the first electrode plate and the second electrode plate; The resistance value of at least a portion of the flexible resistive film is determined based on the current value and the voltage value; The length of the air bladder between the first electrode plate and the second electrode plate is determined based on the resistance value; The specific steps of determining the physiological parameters based on the air pressure data are as follows: The physiological parameters are determined based on the air pressure data and the length.

14. The wearable device according to claim 8, characterized in that, The processor is also configured to control the blocking portion to move away from the airbag wristband after the measurement of the physiological parameters is completed.

15. The wearable device according to claim 8, characterized in that, The processor is also configured to, after the measurement of the physiological parameters is completed, control the air pump to deflate the airbag, and when the air pressure inside the airbag is less than or equal to a preset threshold, control the blocking part to move away from the airbag wristband.

16. A method for measuring physiological parameters based on a wearable device as described in claim 1, characterized in that, The measurement method includes: The drive unit is controlled to move the blocking unit a preset distance toward the connecting shaft; Inflate the airbag; The air pressure inside the airbag is detected, and the air pressure data of the airbag from the start of inflation to the end of inflation is obtained; The physiological parameters are determined based on the air pressure data; After the physiological parameters have been measured, the airbag is deflated. The drive unit is controlled to move the blocking unit in a direction away from the connecting shaft.

17. The measurement method according to claim 16, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction close to the connecting shaft, the method further includes: It is determined that the wearable device is in a worn state.

18. The measurement method according to claim 16, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction close to the connecting shaft, the method further includes: The airbag is connected to the main body of the device.

19. The measurement method according to claim 16, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction close to the connecting shaft, the method further includes: Determine the arrival time.

20. The measurement method according to claim 16, characterized in that, The wearable device further includes an input device for receiving user input; the method further includes, prior to controlling the drive unit to move the blocking unit toward the connecting shaft: The input device is detected to have received a first operation, which is used to initiate the measurement of the physiological parameter.

21. The measurement method according to any one of claims 16-20, characterized in that, The wearable device further includes a circuit board, a first electrode sheet, a second electrode sheet, and a flexible resistive film; wherein, The flexible resistive film covers the surface of the airbag on the side away from the wristband; The first electrode sheet is disposed on the side of the flexible resistive film near the second connection end and is electrically connected to the flexible resistive film; The second electrode is fixed to the surface of the blocking portion facing the airbag; the second electrode is used to electrically connect to the flexible resistive film when the blocking portion blocks the airbag. After the method involves controlling the driving unit to move the blocking unit a predetermined distance toward the connecting shaft, the method further includes: Determine the current value flowing through the first path, which is composed of the circuit board, the first electrode sheet, the second electrode sheet, and at least a portion of the flexible resistive film; Determine the voltage value between the first electrode plate and the second electrode plate; The resistance value of at least a portion of the flexible resistive film is determined based on the current value and the voltage value; The length of the air bladder between the first electrode plate and the second electrode plate is determined based on the resistance value; The specific steps of determining the physiological parameters based on the air pressure data are as follows: The physiological parameters are determined based on the air pressure data and the length.

22. The measurement method according to any one of claims 16-20, characterized in that, The method further includes controlling the blocking part away from the airbag wristband after the measurement of the physiological parameters is completed.

23. The measurement method according to any one of claims 16-20, characterized in that, The method further includes, after the measurement of the physiological parameters is completed, controlling the air pump to deflate the airbag, and when the air pressure inside the airbag is less than or equal to a preset threshold, controlling the blocking part to move away from the airbag wristband.

24. An electronic device for measuring physiological parameters, characterized in that, The electronic device includes: The equipment body has a first side and a second side that are disposed opposite to each other; A connecting shaft is mounted on the second side, and a gap is formed between the connecting shaft and the second side. An airbag wristband includes a wristband and an airbag, the airbag being at least partially stacked on one side of the wristband. The airbag wristband has a first end and a second end. The first end includes a first connecting end of the wristband and a second connecting end of the airbag. The first connecting end is used to fixably connect to the first side, and the second connecting end is used to connect to the first side, so that the device body can inflate or deflate the airbag through the second connecting end. The second end passes through the gap and is fixed to the side of the wristband opposite to the airbag. An airbag blocking component includes a blocking part and a driving part. The driving part is disposed in the main body of the device, and the blocking part is located outside the main body of the device. The driving part is used to drive the blocking part to move a preset distance toward the connecting shaft, so that the blocking part holds the airbag wristband against the connecting shaft. When the airbag is inflated, only the part of the airbag between the second connecting end and the blocking part is inflated. The memory is used to store computer programs; A processor, configured to execute the computer program, causing the electronic device to perform the following steps: The drive unit is controlled to move the blocking unit a preset distance toward the connecting shaft; Control the inflation of the airbag; The air pressure inside the airbag is detected, and the air pressure data of the airbag from the start of inflation to the end of inflation is obtained; The physiological parameters are determined based on the air pressure data; After the physiological parameters have been measured, the airbag is deflated. The drive unit is controlled to move the blocking unit in a direction away from the connecting shaft.

25. The electronic device according to claim 24, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to cause the electronic device to perform the following steps: It is determined that the electronic device is in a worn state.

26. The electronic device according to claim 24, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to cause the electronic device to perform the following steps: The airbag is connected to the main body of the device.

27. The electronic device according to claim 24, characterized in that, Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to cause the electronic device to perform the following steps: Determine the arrival time.

28. The electronic device according to claim 24, characterized in that, The electronic device also includes an input device for receiving user operations; Before controlling the drive unit to move the blocking unit toward the direction closer to the connecting shaft, the processor is further configured to cause the electronic device to perform the following steps: The input device is detected to have received a first operation, which is used to initiate the measurement of the physiological parameter.

29. The electronic device according to any one of claims 24-28, characterized in that, The electronic device further includes a circuit board, a first electrode sheet, a second electrode sheet, and a flexible resistive film; wherein, The flexible resistive film covers the surface of the airbag on the side away from the wristband; The first electrode sheet is disposed on the side of the flexible resistive film near the second connection end and is electrically connected to the flexible resistive film; The second electrode is fixed to the surface of the blocking portion facing the airbag; the second electrode is used to electrically connect to the flexible resistive film when the blocking portion blocks the airbag. After the processor controls the driving unit to move the blocking unit a predetermined distance toward the connecting shaft, the processor is further configured to cause the electronic device to perform the following steps: Determine the current value flowing through the first path, which is composed of the circuit board, the first electrode sheet, the second electrode sheet, and at least a portion of the flexible resistive film; Determine the voltage value between the first electrode plate and the second electrode plate; The resistance value of at least a portion of the flexible resistive film is determined based on the current value and the voltage value; The length of the air bladder between the first electrode plate and the second electrode plate is determined based on the resistance value; The specific steps of determining the physiological parameters based on the air pressure data are as follows: The physiological parameters are determined based on the air pressure data and the length.

30. The electronic device according to any one of claims 24-28, characterized in that, The processor is also configured to cause the electronic device to perform the following steps: After the measurement of the physiological parameters is completed, the blocking part is controlled to move away from the airbag wristband.

31. The electronic device according to any one of claims 24-28, characterized in that, The processor is also configured to cause the electronic device to perform the following steps: After the measurement of the physiological parameters is completed, the air pump is controlled to deflate the airbag. When the air pressure inside the airbag is less than or equal to a preset threshold, the blocking part is controlled to move away from the airbag wristband.

Images