Patent Description:
This application relates to the field of blood pressure measurement technologies, and in particular, to an electronic device.

As people's living standard continuously improves, a quantity of hypertension patients in China increases. People need to pay more and more attention to measurement of human body indicators such as blood pressure.

An oscillographic method is a blood pressure measurement method with high measurement precision that is widely used in current blood pressure measurement. As shown in <FIG>, a detection principle of the oscillographic method is as follows: After a user wears a cuff <NUM>, a micro pump is used to inflate an inner cavity of an airbag to pressurize and block a blood vessel <NUM> of a body part on which the user wears the cuff <NUM>. Then, the micro pump releases air from the inner cavity to gradually stop blocking the blood vessel. In the foregoing process of inflating and releasing air, after a detected pressure wave signal in the inner cavity is filtered, an oscillation wave signal of air in the cuff <NUM> is obtained, and an oscillation wave envelope is obtained through fitting. In this case, a blood pressure value is estimated based on a relationship between the oscillation wave envelope and blood pressure. Currently, a common cuff blood pressure meter measures blood pressure by using a measurement principle of the oscillographic method. However, it is large and inconvenient to carry. Therefore, as shown in <FIG>, in the conventional technology, an airbag <NUM> is disposed on a device body <NUM> of a wearable device <NUM>, to form an existing wrist blood pressure meter. The wrist blood pressure meter is small, and is convenient for daily carrying and real-time detection. As the wrist blood pressure meter still uses the airbag <NUM> to press a body part of the user, the airbag <NUM> needs to be additionally disposed on the device body <NUM> of the wearable device <NUM>.

However, the airbag <NUM> and the device body <NUM> of the wearable device <NUM> are two separate independent structures with poor integration. In addition, after the airbag <NUM> of the wearable device <NUM> expands to be an ellipsoid, an effective pressing length of a blood vessel is reduced. Consequently, precision of blood pressure detection is susceptible to disturbance of an interference signal, and is poor in stability. This affects accuracy of a detection result.

<CIT> discloses a pulse diagnostic instrument.

<CIT> discloses an apparatus for contacting skin with sensor equipment.

<CIT> discloses an electronic device for blood pressure measurement.

<CIT> discloses an electronic device that measures physiological information of a living subject.

This application provides an electronic device according to claim <NUM> that is wearable and further helps A device in accordance with the invention is defined in claim <NUM>. improve accuracy of blood pressure measurement.

An embodiment of this application provides an electronic device, including a pressing component and a pressure sensor. The pressing component is disposed on a wearing structure of the electronic device. The pressing component includes an electromagnetic driving member and a pressure bearing member that may move under an electromagnetic force of the electromagnetic driving member. The pressure sensor is disposed on the pressure bearing member, and the pressure sensor is located on a surface that is of the wearing structure and that faces a measurement body part of a user. The pressure bearing member is configured to be driven by the electromagnetic driving member to press the pressure sensor on the measurement body part. The pressure sensor is configured to obtain a pulse wave signal of the measurement body part.

In this application, the pressing component and the pressure sensor are disposed on the wearing structure of the electronic device. The pressing component includes the electromagnetic driving member and the pressure bearing member, and the pressure bearing member may move under the electromagnetic force of the electromagnetic driving member. The pressure sensor is disposed on the pressure bearing member, and is located on a surface that is of the wearing structure and that faces the measurement body part of the user. In this way, according to one aspect, the pressure sensor may synchronously move with the pressure bearing member, and is driven by the electromagnetic driving member to press the measurement body part, to obtain a pulse wave signal of a measurement body part <NUM>. This implements blood pressure measurement. In this application, the electromagnetic driving member may be precisely controlled, so that the pressure sensor presses the measurement body part accurately. This helps improve accuracy of blood pressure measurement. According to another aspect, both the pressing component and the pressure sensor are disposed on the wearing structure of the electronic device, so that the electronic device in this application has a higher degree of integration than an existing wearable device used for blood pressure measurement, and can facilitate daily carrying and real-time blood pressure monitoring. In this way, blood pressure management is implemented for the user. In addition, compared with an existing airbag pressing manner, in this application, the pressure sensor presses the measurement body part. This helps improve comfort of the measurement body part.

In a possible implementation, the pressure bearing member is located on a side that is of the pressure sensor and that is away from the measurement body part. In this way, when the pressure sensor is carried and fastened, the pressure sensor may be disposed close to the measurement body part, so that the pressure sensor presses the measurement body part. This further improves accuracy of blood pressure measurement.

In a possible implementation, when the pressure sensor is pressed on the measurement body part by the pressure bearing member, a movement direction of the pressure bearing member is from the electromagnetic driving member towards the measurement body part. In this way, according to one aspect, when blood pressure needs to be measured, the pressure sensor located on the pressure bearing member and the pressure bearing member move together towards the measurement body part, so that the measurement body part is pressed. According to another aspect, this improves aesthetics of the electronic device.

In a possible implementation, one of the electromagnetic driving member and the pressure bearing member includes an electromagnet, and the other includes a magnet. Magnetic poles of the electromagnet and magnetic poles of the magnet are disposed opposite to each other.

The electromagnet has an adjustable polarity, so that when poles of the electromagnet and poles of the magnet repel each other, the pressure sensor is pressed on the measurement body part, or when poles of the electromagnet and poles of the magnet attract each other, the pressure sensor leaves the measurement body part.

In this way, the polarity of the electromagnet may be changed to control movement of the pressure bearing member and the pressure sensor relative to the electromagnetic driving member. According to one aspect, the pressure sensor may press the measurement body part to obtain the pulse wave signal. When a blood pressure value is measured, a magnetic flux strength of the electromagnet may be precisely controlled, so that the pressure sensor presses the measurement body part accurately. This helps improve accuracy of blood pressure measurement. According to another aspect, the pressure sensor and the pressure bearing member may leave the measurement body part and return to the electronic device.

In a possible implementation, the pressure bearing member is fixedly connected to the pressure sensor or is detachably connected to the pressure sensor. In this way, the pressure sensor may be fastened to the pressure bearing member, and the pressure bearing member supports the pressure sensor. According to one aspect, when the pressure bearing member is driven by the electromagnetic driving member to move relative to the electromagnetic driving member, the pressure sensor may synchronously move with the pressure bearing member. According to another aspect, compared with an existing wearable device having a blood pressure measurement function, the electronic device may be enhanced in integrated structure.

In a possible implementation, the electromagnet includes a magnetic core and a coil wound around an outer peripheral side of the magnetic core. In this way, when a current is supplied into the coil, a magnetic field is generated around the coil, so that a polarity and a magnetic flux strength of the magnetic field are controlled to drive the pressure bearing member and the pressure sensor to move relative to the measurement par, and the pressure sensor presses the measurement body part accurately. This helps improve accuracy of blood pressure measurement.

The wearing structure includes a wrist strap and an electronic body. The wrist strap is connected to the electronic body, and the pressing component is disposed in the wrist strap.

In this way, when the pressure sensor performs blood pressure measurement by pressing the measurement body part, the pressing component, the pressure sensor, and the electronic device may be disposed in more diversified manners.

A mounting cavity is disposed on a surface that is in the wrist strap and that faces the measurement body part, and at least a portion of the pressing component is disposed in the mounting cavity. In this way, it is convenient to mount and fasten the pressing component and the pressure sensor, and the pressing component and the pressure sensor may be disposed close to the measurement body part. This facilitates pressing of the measurement body part and blood pressure measurement.

The pressure bearing member is slidably connected to an inner wall of the mounting cavity. In this way, when the pressure bearing member is mounted in the mounting cavity, it may be convenient for the pressure bearing member to be driven by the electromagnetic driving member to move. This reduces abrasion caused to the pressure bearing member and prolongs a service life of the electronic device.

The device further includes at least one sliding component. The sliding component is connected between the pressure bearing member and the inner wall of the mounting cavity, so that the pressure bearing member is slidably connected to the inner wall of the mounting cavity.

In this way, when the pressure bearing member is slidably connected to the inner wall of the mounting cavity of the wrist strap, abrasion caused to the pressure bearing member or the mounting cavity when the pressure bearing member moves in the mounting cavity may be reduced, so as to prolong a service life of the electronic device.

In a possible implementation, there are a plurality of sliding components, and the sliding components are disposed in different directions on a peripheral side of the pressure bearing member. In this way, according to one aspect, sliding between the pressure bearing member and the mounting cavity may be more stable, and stability performance of the pressing component in the wrist strap may be enhanced. This helps improve a pressing effect of the pressure sensor. According to another aspect, connection manners of the pressure bearing member and the mounting cavity may be more diversified.

In a possible implementation, each sliding component includes a first pulley disposed on a side wall of the pressure bearing member and a slide rail disposed on the inner wall of the mounting cavity. The pulley and the slide rail are disposed opposite to each other, and the first pulley may slide along the slide rail, so that the pressure bearing member is slidably connected to the inner wall of the mounting cavity.

In this way, the sliding between the pressure bearing member and the mounting cavity may be smoother, and the pressure bearing member may slide according to a set track of the slide rail.

In a possible implementation, a limiting part is disposed at an opening of the mounting cavity, and the limiting part is correspondingly disposed outside the first pulley in a pressing direction. In this way, according to one aspect, a movable stroke of the pressure bearing member may be limited through the limiting part. According to another aspect, the first pulley may be shielded, so as to enhance aesthetics and sealing performance of the electronic device.

In a possible implementation, a guide member is further disposed between the pressure bearing member and the electromagnetic driving member. A first guide groove corresponding to the guide member is further disposed in the electromagnetic driving member. A first end of the guide member is connected to the magnet, and a second end of the guide member passes through the first guide groove and may move in an extension direction of the first guide groove.

In this way, the guide member slides in the first guide groove, so that movement of the pressure bearing member may be better guided.

In a possible implementation, the sliding component includes a second pulley, a connection arm, and a second guide groove. The second guide groove and the mounting cavity are fastened relative to each other, and an extension direction of the second guide groove is staggered with a pressing direction of the electromagnetic driving member. A first end of the connection arm is hinged with the pressure bearing member, the second pulley is disposed at a second end of the connection arm, and the second pulley can slide in the guide groove, so that the connection arm drives the pressure bearing member to move in the pressing direction.

In this way, sliding between the pressure bearing member and the mounting cavity may be smoother through the sliding component, and the moveable stroke of the pressure bearing member may be limited through the sliding component.

In a possible implementation, the second guide groove is located in the mounting cavity; or
the second guide groove is formed into a cavity in communication with the mounting cavity.

In this way, the sliding component and the electronic device may be disposed in more diversified manners when the second pulley slides in the second guide groove.

In a possible implementation, the wrist strap is a metal wrist strap or a fluoro rubber wrist strap. In this way, deformation of the wrist strap relative to the pressing component or the pressure sensor may be avoided, so that the pressing component is more securely connected in the wrist strap. This helps improve stability performance of the electronic device.

In a possible implementation, the pressure sensor is even with a surface of the wearing structure; or the pressure sensor protrudes from a surface of the wrist strap.

In this way, when the pressure sensor presses the measurement body part, the pressure sensor may be disposed in a more diversified manner. This helps improve diversity of the electronic device.

In a possible implementation, the device further includes a processor. The processor is configured to measure a blood pressure value of the user based on the obtained pulse wave signal. In this way, blood pressure of the user may be measured through the processor and the pressure sensor, so that the user monitors the blood pressure in real time and manages the blood pressure.

In a possible implementation, the device further includes a display. The display is electrically connected to the processor, and is configured to display the blood pressure value. In this way, the measured blood pressure value may be intuitively displayed through the display, so that it is convenient for the user to obtain the blood pressure value.

In a possible implementation, the device further includes a wireless communication module. The wireless communication module is electrically connected to the processor. In this way, communication with the wearing structure of the electronic device or an external device may be implemented through the wireless communication module.

In a possible implementation, the device includes the wearing structure, the pressing component, and the pressure sensor. The pressing component is disposed on the wearing structure, and the pressure sensor is disposed on the pressing component.

In this way, according to one aspect, the pressure sensor may press the measurement body part, so that the electronic device is wearable and has a blood pressure measurement function. According to another aspect, the pressure sensor may be assembled on the wearing structure through the pressing component. This helps improve an integrated structure of the electronic device.

Terms used in embodiments of this application are only used to explain specific embodiments of this application, but are not intended to limit this application.

Blood pressure (blood pressure, BP): refers to lateral pressure exerted on a sidewall of a blood vessel per unit area when blood flows inside the blood vessel. In other words, human blood pressure refers to pressure that is generated by a pulsating blood flow in a blood vessel and that is perpendicular to a wall of the blood vessel in a lateral direction. A peak value of the pressure is systolic blood pressure, and may alternatively be referred to as high pressure. A valley value of the pressure is diastolic blood pressure, and may alternatively be referred to as low pressure. Blood pressure is main driving force of blood flow. The human blood pressure needs to be kept within a normal fluctuation range, in other words, both systolic blood pressure and diastolic blood pressure need to be reported within the normal fluctuation range. Excessively high or excessively low blood pressure adversely affects human health. Take a normal adult as an example. The systolic blood pressure of the adult should be greater than <NUM> Hg and less than <NUM> Hg, and the diastolic blood pressure should be greater than <NUM> Hg and less than <NUM> Hg. As blood vessels are different, blood pressure is respectively referred to as arterial blood pressure, venous blood pressure and capillary blood pressure. Generally, blood pressure during human body measurement is arterial blood pressure.

Currently, as people's living standard continuously improves, a quantity of hypertension patients in China increases. As people's public awareness of health is not enough, daily inspection is not timely. In addition, patients are lack of scientific daily blood pressure monitoring and guidance, and do not have a clear understanding of an objective of blood pressure management and impact of life habits. In addition, grassroots medical institutions do not provide comprehensive professional services, and are lack of management methods for patients outside hospitals, so that patients' therapy adherence is poor. According to related data, <NUM>% of adults suffer from hypertension, and <NUM>% of stroke and <NUM>% of myocardial infarction deaths are related to the hypertension. Therefore, people need to improve awareness of a degree of attention paid to health, and strengthen measurement of a human body indicator such as blood pressure.

Take a cuff blood pressure meter as an example. Refer to <FIG>. The following briefly describes a principle of measuring blood pressure by using an oscillographic method.

Blood pressure measurement by using the oscillographic method: After a user wears a cuff <NUM>, a micro pump (not shown in the figure) is used to inflate an inner cavity of an airbag of the cuff <NUM> to pressurize and block a blood vessel of a body part on which the user wears the cuff <NUM>. Then, the micro pump releases air from the inner cavity to gradually stop blocking the blood vessel. In the foregoing process of inflating and releasing air, after an air pressure sensor detects a pressure wave signal in the inner cavity, an oscillation wave signal of air in the cuff <NUM> is obtained after the pressure wave signal is filtered, and an oscillation wave envelope is obtained through fitting. In this case, a blood pressure value is estimated based on a relationship between the oscillation wave envelope and blood pressure.

However, a conventional blood pressure measurement device such as a cuff blood pressure meter <NUM> is large and inconvenient to carry, so that it is difficult to implement a requirement of people for real-time blood pressure monitoring.

Therefore, in the conventional technology, an airbag <NUM> is disposed on a device body <NUM> of a wearable device <NUM>, to form an existing wearable electronic device for blood pressure measurement, for example, a wrist sphygmomanometer, like a wrist sphygmomanometer shown in <FIG>. The wrist sphygmomanometer is small and convenient for daily carrying and real-time detection. The wrist sphygmomanometer still uses a measurement principle of the oscillographic method, and uses the airbag <NUM> to press a body part of the user. For the wearable electronic device used for blood pressure measurement, the airbag <NUM> needs to be additionally disposed on the foregoing device body <NUM>.

Refer to <FIG>. The airbag <NUM>, however, is usually disposed on a side that is of the device body <NUM> and that is close to the wrist (namely, an inner side of the wearable device <NUM>), and is not connected to the wearable device <NUM>. The airbag <NUM> and the device body <NUM> of the wearable device <NUM> are two separate independent structures with poor integration. In addition, as shown in <FIG>, after the airbag <NUM> of the wearable device <NUM> expands to be an ellipsoid, an effective pressing length L of a blood vessel <NUM> is reduced. Consequently, precision of blood pressure detection is susceptible to disturbance of an interference signal, and is poor in stability. This affects accuracy of a detection result.

Therefore, an embodiment of this application provides an electronic device, so that the electronic device is wearable and may measure blood pressure anytime and anywhere. This helps improve accuracy of blood pressure measurement. It should be understood that the electronic device includes but is not limited to a wearable device or the like. The wearable device includes but is not limited to a watch <NUM> or a smartwatch.

The following further describes the electronic device in this embodiment of this application by using a watch as an example.

<FIG> is a schematic diagram of a structure of an electronic device according to an embodiment of this application. <FIG> is a schematic diagram of a structure of an electronic device worn on a wrist according to an embodiment of this application. <FIG> is a schematic diagram of a structure of an electronic device from another perspective according to an embodiment of this application. <FIG> is a partial sectional view that shows a part A of the electronic device in <FIG>. <FIG> is a top view of the electronic device in <FIG>. <FIG> is a schematic diagram of a structure of the electronic device in <FIG> during blood pressure measurement.

<FIG> show a watch. In this embodiment of this application, the watch <NUM> is used as an example to further describe the electronic device in this application. Refer to <FIG>. The watch <NUM> may include a pressing component <NUM> and a pressure sensor <NUM>, and the pressing component <NUM> is disposed on a wearing structure <NUM> of the electronic device. The pressing component <NUM> includes an electromagnetic driving member <NUM> and a pressure bearing member <NUM> that may move under an electromagnetic force of the electromagnetic driving member <NUM>, and the pressure sensor <NUM> is disposed on the pressure bearing member <NUM>. In this way, the pressure bearing member <NUM> may be fastened relative to the pressure sensor <NUM> while supporting the pressure sensor <NUM>. The pressure sensor <NUM> is located on a surface that is of the wearing structure <NUM> and that faces the measurement body part <NUM> of a user, and is configured to press the measurement body part <NUM> when measuring blood pressure for the measurement body part <NUM>. The pressure bearing member <NUM> is driven by the electromagnetic driving member <NUM> to press the pressure sensor <NUM> on the measurement body part <NUM>. The pressure sensor <NUM> is configured to obtain a pulse wave signal of the measurement body part <NUM>, to measure blood pressure.

It should be noted that the pulse wave signal in this embodiment is the same as the pressure wave signal mentioned in the background, and includes an oscillation wave signal and a pressure signal. The electronic device in this embodiment of this application may filter and perform fitting processing on the forging pulse wave signal to obtain an oscillation wave envelope through the oscillographic method, and estimate a blood pressure value based on a relationship between the oscillation wave envelope and blood pressure, to measure blood pressure.

When measuring blood pressure by using the oscillographic method, the electronic device in this application may measure blood pressure by applying continuously changing pressure, as shown in <FIG>. Alternatively, the electronic device may measure blood pressure at a pressure value (for example, <NUM> Hg). It should be noted that when a pressure value is used to measure blood pressure, the pressure value needs to be greater than average arterial pressure in <FIG>, to ensure validity and accuracy of a measurement result.

In a possible implementation, the pressure sensor <NUM> may transmit the obtained pulse wave signal to a processor <NUM> of the electronic device. After obtaining the pulse wave signal transmitted by the pressure sensor <NUM>, the processor <NUM> filters and performs fitting processing on the pulse wave signal, and estimates the blood pressure value based on the relationship between the oscillation wave envelope and the blood pressure, to measure blood pressure of the measurement body part <NUM>.

Alternatively, in another possible implementation, the pressure sensor <NUM> may transmit the obtained pulse wave signal to a PC end outside the electronic device. The PC end filters and performs fitting processing on the pulse wave signal, and estimates the blood pressure value based on the relationship between the oscillation wave envelope and the blood pressure, to measure blood pressure of the measurement body part <NUM>. In this embodiment, a signal transmission manner of the pressure sensor <NUM> is not further limited.

Correspondingly, in this embodiment, the electronic device may alternatively be another apparatus that can be worn on a wrist. In other words, the electronic device in this application includes but is not limited to the watch <NUM>. The watch <NUM> includes but is not limited to a smartwatch. When the watch <NUM> is a smartwatch, a processor inside the smartwatch may be used to process the pulse wave signal and calculate the blood pressure value.

The pressing component <NUM> may be disposed on the wearing structure <NUM> of the electronic device. It may be understood that the pressing component <NUM> may be disposed on a wearing body of the electronic device. The wearing body may include a wrist strap <NUM>, or an electronic body <NUM> of the electronic device, or a wrist strap <NUM> and an electronic body <NUM> of the electronic device. Correspondingly, the watch <NUM> shown in <FIG> is used as an example. The wearing structure <NUM> may include the wrist strap <NUM> and the electronic body <NUM>. The wrist strap <NUM> is connected to the electronic body <NUM> in a rotating manner. The electronic body <NUM> may be understood as a watch body of the watch <NUM>. The pressing component <NUM> may be disposed in the wrist strap <NUM>. Refer to <FIG> and <FIG>. When the electronic device measures blood pressure, the pressure sensor <NUM> on the pressure bearing member <NUM> presses the measurement body part <NUM> (for example, an artery of the wrist) of the user.

Alternatively, the pressing component <NUM> may be disposed in the electronic body <NUM>, that is, the pressing component <NUM> may alternatively be disposed in the watch body, and the pressure sensor <NUM> may press the measurement body part <NUM> of the user. In this case, the measurement body part <NUM> pressed by the pressure sensor <NUM> is the back of the wrist rather than an artery inside the wrist. To obtain an accurate measurement result, in actual use, the electronic body <NUM> of the electronic device may be rotated to the artery inside the wrist (even if the electronic body <NUM> is rotated to a direction opposite to that in <FIG> and worn on the wrist), so that the pressure sensor <NUM> can press the artery. In this way, a structure of the wrist strap <NUM> of the electronic device is not affected while blood pressure is measured.

In the following embodiments of this application, the electronic device is further described by disposing the pressing component <NUM> in the wrist strap <NUM>.

Refer to <FIG>. The pressing component <NUM> includes an electromagnetic driving member <NUM> and a pressure bearing member <NUM>. The pressure bearing member <NUM> may move under an electromagnetic force of the electromagnetic driving member <NUM>. Because the pressure sensor <NUM> is disposed on the pressure bearing member <NUM>, the pressure bearing member <NUM> is fastened relative to the pressure sensor <NUM> while supporting the pressure sensor <NUM>. In other words, the pressure sensor <NUM> may synchronously moves with the pressure bearing member <NUM> when the pressure bearing member <NUM> is driven by the electromagnetic driving member <NUM>. In this way, when blood pressure needs to be measured, the electromagnetic driving member <NUM> may drive the pressure bearing member <NUM> to move in a direction towards the measurement body part <NUM> of the user, so as to drive the pressure sensor <NUM> to move in the direction towards the measurement body part <NUM>. This implements pressing on the measurement body part. In this way, a pulse wave signal of the measurement body part <NUM> is obtained, so that the blood pressure is measured.

In actual application, in this embodiment, a driving force of the electromagnetic driving member <NUM> may be precisely controlled, so that the pressure sensor <NUM> presses the measurement body part <NUM> accurately. This helps improve accuracy of blood pressure measurement.

Specifically, in this embodiment, the pressure sensor <NUM> is disposed on the wearing structure <NUM> of the electronic device through the pressing component <NUM>. In one aspect, real-time blood pressure measurement may be implemented, so that it is convenient for the user to monitor and manage blood pressure. In another aspect, a blood pressure measurement apparatus is greatly reduced in size than the cuff blood pressure meter <NUM> in the conventional technology, so that functions of an existing electronic device are more diversified.

In the conventional technology, when blood pressure is measured in an airbag pressing manner, comfort of a user is low. For example, when the cuff blood pressure meter <NUM> measures blood pressure, the cuff <NUM> is bound to an upper arm of the user, and an airbag in the cuff <NUM> is used to press the entire upper arm (as shown in <FIG>). When the electronic device in this application measures blood pressure, because the electromagnetic driving member <NUM> drives the pressure bearing member <NUM> to press the measurement body part <NUM> by driving the pressure sensor <NUM>, the pressure sensor <NUM> presses only the measurement body part <NUM> rather than the entire measurement body part <NUM> of the body. Therefore, compared with the airbag pressing manner in the conventional technology, the electronic device in this application helps improve comfort of the measurement body part <NUM>.

Therefore, in this application, the pressing component <NUM> and the pressure sensor <NUM> are disposed on the wearing structure <NUM> of the electronic device. The pressing component <NUM> includes the electromagnetic driving member <NUM> and the pressure bearing member <NUM>, and the pressure bearing member <NUM> may move under the electromagnetic force of the electromagnetic driving member <NUM>. The pressure sensor <NUM> is disposed on the pressure bearing member <NUM>, and is located on a surface that is of the wearing structure <NUM> and that faces the measurement body part <NUM> of the user. In this way, in one aspect, the pressure sensor <NUM> may synchronously move with the pressure bearing member <NUM>, and is driven by the electromagnetic driving member <NUM> to press the measurement body part <NUM>, to obtain a pulse wave signal of the measurement body part <NUM>. This implements blood pressure measurement. In this application, the electromagnetic driving member <NUM> may be precisely controlled, so that the pressure sensor <NUM> presses the measurement body part <NUM> accurately. This helps improve accuracy of blood pressure measurement. In another aspect, both the pressing component <NUM> and the pressure sensor <NUM> are disposed on the wearing structure <NUM> of the electronic device, so that the electronic device in this application has a higher degree of integration than an existing wearable device used for blood pressure measurement, and can facilitate daily carrying and real-time blood pressure monitoring. In this way, blood pressure management is implemented for the user. In addition, compared with an existing airbag pressing manner, in this application, the pressure sensor <NUM> presses the measurement body part <NUM>. This helps improve comfort of the measurement body part <NUM>.

Refer to <FIG>. The pressure bearing member <NUM> may be located on a side that is of the pressure sensor <NUM> and that is away from the measurement body part <NUM>, that is, the pressure bearing member <NUM> is disposed towards a side that is of the pressure sensor <NUM> and that is away from the measurement body part <NUM> while carrying the pressure sensor <NUM>. In this way, when the pressure sensor <NUM> is carried and fastened, and the pressure sensor <NUM> may be disposed close to the measurement body part <NUM>, to shorten a distance between the pressure sensor <NUM> and the measurement body part <NUM>. In this way, in one aspect, it may be convenient for the pressure sensor <NUM> to press the measurement body part <NUM>, so that accuracy of blood pressure measurement is further improved. In another aspect, a movement path of the pressure bearing member <NUM> may be shortened, so that a requirement for a driving force of the electromagnetic driving member <NUM> is reduced.

Specifically, in this embodiment, when the pressure sensor <NUM> is pressed on the measurement body part <NUM> through the pressure bearing member <NUM>, a movement direction of the pressure bearing member <NUM> is from the electromagnetic driving member <NUM> towards the measurement body part <NUM>. It may be understood that when blood pressure does not need to be measured, the pressure bearing member <NUM> is disposed close to the electromagnetic driving member <NUM>, and is located in the wearing structure <NUM>. In other words, the pressing component <NUM> is disposed in the wearing structure <NUM> (in a state shown in <FIG>), and the pressing component <NUM> is hidden through the wearing structure <NUM>. This helps improve aesthetics of the electronic device. Correspondingly, when blood pressure needs to be measured, the pressure bearing member <NUM> is driven by the electromagnetic driving member <NUM> to drive the pressure sensor <NUM> to move towards the measurement body part <NUM>. In this case, the pressure sensor <NUM> and the pressure bearing member <NUM> are located on the outside of the wearing structure <NUM> (in a state shown in <FIG>), so that it is convenient for the pressure sensor <NUM> to press the measurement body part <NUM>. In this way, in one aspect, when blood pressure needs to be measured, the pressure sensor <NUM> located on the pressure bearing member <NUM> and the pressure bearing member <NUM> move together towards the measurement body part <NUM>, so that the measurement body part <NUM> is pressed. In another aspect, this improves aesthetics of the electronic device.

In this embodiment, one of the electromagnetic driving member <NUM> and the pressure bearing member <NUM> may include an electromagnet (not shown in the figure), and the other may include a magnet <NUM>. That is, any one of the electromagnetic driving member <NUM> and the pressure bearing member <NUM> may include the electromagnet, and the other one includes the magnet <NUM>. For example, when the electromagnetic driving member <NUM> includes the electromagnet, correspondingly, the pressure bearing member <NUM> includes the magnet <NUM>. On the contrary, when the pressure bearing member <NUM> includes the electromagnet, correspondingly, the electromagnetic driving member <NUM> is a magnet.

It should be noted that one of the electromagnetic driving member <NUM> and the pressure bearing member <NUM> may include the electromagnet, and the other may include the magnet. It may be understood that the electromagnet or the magnet may be a portion of the electromagnetic driving member <NUM> or the pressure bearing member <NUM>, or may be an entire structure of the electromagnetic driving member <NUM> or the pressure bearing member <NUM>. For example, when the pressure bearing member <NUM> includes the magnet <NUM>, the magnet <NUM> may be a portion of the pressure bearing member <NUM> (as shown in <FIG>), or may be the entire structure of the pressure bearing member <NUM> (as shown in <FIG>).

For example, the magnet <NUM> may be a permanent magnet <NUM> or another magnetic module. That is, in this embodiment, the magnet <NUM> includes but is not limited to the permanent magnet <NUM>.

In this embodiment, magnetic poles of the electromagnet and magnetic poles of the magnet <NUM> are disposed opposite to each other. In this way, a principle that like poles repel each other whereas unlike poles attract each other may be better used to drive the magnet <NUM> to move through the electromagnet.

Specifically, the electromagnet has an adjustable polarity, so that the magnet <NUM> may be driven to move by adjusting the polarity of the electromagnet. It may be understood that, when polarities of the electromagnet and the magnet <NUM> repel each other, the magnet <NUM> is driven by the electromagnet, to drive the pressure sensor <NUM> to move towards the measurement body part <NUM>, and press the pressure sensor <NUM> on the measurement body part <NUM>. Alternatively, when polarities of the electromagnet and the magnet <NUM> attract each other, the magnet <NUM> is driven by the electromagnet, to drive the pressure sensor <NUM> to move in a direction away from the measurement body part <NUM>, so that the pressure sensor leaves the measurement body part <NUM> and returns to the wearing structure <NUM>. In this way, the polarity of the electromagnet may be changed to control movement of the pressure bearing member <NUM> and the pressure sensor <NUM> relative to the electromagnetic driving member <NUM>. In one aspect, the pressure sensor <NUM> may press the measurement body part <NUM> to obtain the pulse wave signal. When a blood pressure value is measured, a magnetic flux strength of the electromagnet may be controlled by controlling a value of an electrified current or a quantity of turns of the coil <NUM> of the electromagnet, so that a driving force of the electromagnet is accurately controlled, and the pressure sensor <NUM> presses the measurement body part <NUM> accurately. This helps improve accuracy of blood pressure measurement. In another aspect, the pressure sensor <NUM> and the pressure bearing member <NUM> may leave the measurement body part <NUM> and return to the electronic device.

For example, when the electromagnetic driving member <NUM> is the electromagnet, and the pressure bearing member <NUM> includes the magnet <NUM>, refer to <FIG>. When blood pressure needs to be measured, a polarity of the electromagnetic driving member <NUM> may be changed to make the electromagnetic driving member <NUM> and the magnet <NUM> repel each other. In this case, under an action of a repulsion force, the magnet <NUM> drives the pressure sensor <NUM> to move towards the measurement body part <NUM>, and the pressure sensor <NUM> presses the measurement body part <NUM> to measure blood pressure. When the blood pressure is measured, the polarity of the electromagnetic driving member <NUM> may be changed again to make the electromagnetic driving member <NUM> and the magnet <NUM> attract each other. The magnet <NUM> drives, under an action of an attraction force, the pressure sensor <NUM> to move in a direction away from the measurement body part <NUM>, so that the pressure sensor leaves the measurement body part <NUM> and returns to the wearing structure <NUM>.

On the contrary, when the electromagnetic driving member <NUM> is the magnet, and when the pressure bearing member <NUM> is the electromagnet, movement is relative. Therefore, when blood pressure needs to be measured, the polarity of the pressure bearing member <NUM> may be changed to make the pressure bearing member <NUM> and the magnet <NUM> repel each other, so that under an action of a repulsion force, the pressure bearing member <NUM> drives the pressure sensor <NUM> to move towards the measurement body part <NUM>, and the pressure sensor <NUM> presses the measurement body part <NUM> to measure the blood pressure. When the blood pressure is measured, the polarity of the pressure bearing member <NUM> may be changed again to make the pressure bearing member <NUM> and the magnet attract each other. The pressure bearing member <NUM> drives, under an action of an attraction force, the pressure sensor <NUM> to move in a direction away from the measurement body part <NUM>, so that the pressure sensor leaves the measurement body part <NUM> and returns to the wearing structure <NUM>.

It should be understood that, in actual use, the polarity of the electromagnet may be adjustable by changing a direction of the electrified current in the electromagnet.

Because the electromagnet has magnetism after being powered on, and the magnetism disappears after the electromagnet is powered off, in an actual application, the electromagnet is powered on when blood pressure needs to be measured or in a process in which the pressure sensor <NUM> returns. Sometimes, the electromagnet is not powered on in other time (when blood pressure does not need to be measured) alternatively, so that displacement movement of the magnet <NUM> relative to the electromagnet may be avoided while energy consumption of the electronic device is reduced. This helps improve stability of the electronic device.

Alternatively, in a possible implementation, to return the pressure bearing member <NUM> and the pressure sensor <NUM>, a clamping structure (for example, a pressing cover) in the conventional technology may alternatively be used to force the pressure bearing member <NUM> and the pressure sensor <NUM> to return to the wearing structure <NUM>.

In this embodiment, which one of the electromagnetic driving member <NUM> and the pressure bearing member <NUM> is the electromagnet or the magnet is not further limited.

In the following embodiment, the electronic device is further described by using an example in which the electromagnetic driving member <NUM> is the electromagnet and the pressure bearing member <NUM> includes the magnet <NUM>.

Specifically, in this embodiment, the pressure bearing member <NUM> is fixedly connected to the pressure sensor <NUM> or is detachably connected to the pressure sensor <NUM>. In this way, the pressure sensor <NUM> may be fastened to the pressure bearing member <NUM>, and the pressure bearing member <NUM> supports the pressure sensor <NUM>. In one aspect, when the pressure bearing member <NUM> is driven by the electromagnetic driving member <NUM> to move relative to the electromagnetic driving member <NUM>, the pressure sensor <NUM> may synchronously move with the pressure bearing member <NUM>. In another aspect, compared with an existing wearable device <NUM> having a blood pressure measurement function, the electronic device may be enhanced in integrated structure.

For example, the pressure bearing member <NUM> may be connected to the pressure sensor <NUM> through a fastener, a threaded connection, or a buckle connection. This can facilitate removing and mounting of the pressure bearing member <NUM> or the pressure sensor <NUM>.

The electromagnetic driving member <NUM> may also be fastened or detachably connected to the mounting cavity <NUM>, so that the electromagnetic driving member <NUM> is fastened relative to the mounting cavity <NUM>. The electromagnetic driving member <NUM> may be connected to the mounting cavity <NUM> through a fastener, a threaded connection, or a buckle connection. This can facilitate removing and mounting of the electromagnetic driving member <NUM>.

In this embodiment, the electromagnet may include a magnetic core <NUM> and a coil <NUM> wound around an outer peripheral side of the magnetic core <NUM>. In this way, when a current flows into the coil <NUM>, a magnetic field is generated around the coil <NUM>. The magnetic field is used to drive the pressure bearing member <NUM> and the pressure sensor <NUM> to move relative to the measurement body part <NUM>, so as to measure blood pressure.

It should be understood that the coil <NUM> wound around the outer peripheral side of the magnetic core <NUM> may be understood as that the coil <NUM> is wound outside the magnetic core <NUM> in a peripheral direction (as shown in <FIG>).

In an actual application, a magnitude of the electrified current may be controlled to perform precise stepless control on the magnetic flux strength of the electromagnet, so that the pressure sensor <NUM> presses the measurement body part <NUM> accurately. This helps improve accuracy of blood pressure measurement. The stepless control may be understood as a smooth adjustment manner. In this embodiment, the stepless control on the electromagnet mainly refers to controlling a magnitude of the magnetic flux strength of the electromagnet within a range, and performing smooth adjustment on the magnetic flux strength instead of jumping adjustment.

In some embodiments, magnetic flux strength of an electromagnetic field may be precisely adjusted, for example, through stepless adjustment, so that the pressure sensor <NUM> presses the measurement body part <NUM> accurately. This helps improve accuracy of blood pressure measurement. Therefore, compared with a blood pressure measurement apparatus in the conventional technology, the electronic device in this embodiment of this application may not only press the measurement body part <NUM> accurately, but also measure blood pressure of an artery of a wrist, so that blood pressure measurement may be more accurate, and a medical requirement may be met.

Refer to <FIG>. The mounting cavity <NUM> is disposed on a surface that is in the wrist strap <NUM> and that faces the measurement body part <NUM>. In this way, it is convenient to mount and fasten the pressing component <NUM> and the pressure sensor <NUM>, and the pressing component <NUM> and the pressure sensor <NUM> may be disposed close to the measurement body part <NUM>. This facilitates pressing of the measurement body part <NUM> and blood pressure measurement.

That at least a portion of the pressing component <NUM> is disposed in the mounting cavity <NUM> may be understood as that the pressing component <NUM> may be totally disposed in the mounting cavity <NUM> (as shown in <FIG>), or the pressing component <NUM> may be partially disposed in the mounting cavity <NUM> (as shown in <FIG>). In this embodiment of this application, the pressure bearing member <NUM> in the pressing component <NUM> is a structure that moves relative to the electromagnetic driving member <NUM> during blood pressure measurement. Therefore, a position relationship between the pressing component <NUM> and the mounting cavity <NUM> is not limited in this embodiment. In actual use, to improve aesthetics of the electronic device, when no blood pressure test is performed, the pressing component <NUM> is totally disposed in the mounting cavity <NUM>.

To facilitate movement of the pressure bearing member <NUM>, the pressure bearing member <NUM> is slidably connected to an inner wall <NUM> of the mounting cavity <NUM>. In this way, when the pressure bearing member <NUM> is mounted in the mounting cavity <NUM>, it may be convenient for the pressure bearing member <NUM> to be driven by the electromagnetic driving member <NUM> to move. This reduces abrasion caused to the pressure bearing member <NUM> and prolongs a service life of the electronic device.

The electronic device further includes at least one sliding component <NUM>, and the sliding component <NUM> is connected between the pressure bearing member <NUM> and the inner wall <NUM> of the mounting cavity <NUM>, so that the pressure bearing member <NUM> is slidably connected to the inner wall <NUM> of the mounting cavity <NUM>. In this way, when the pressure bearing member <NUM> is slidably connected to the inner wall <NUM> of the mounting cavity <NUM> of the wrist strap <NUM>, abrasion caused to the pressure bearing member <NUM> or the mounting cavity <NUM> when the pressure bearing member <NUM> moves in the mounting cavity <NUM> may be reduced, so as to prolong the service life of the electronic device.

It should be understood that the electronic device further includes at least one sliding component <NUM>, that is, the electronic device may include one sliding component <NUM>, or may include a plurality of sliding components <NUM>. In this embodiment, a quantity of sliding components <NUM> is not further limited, provided that the pressure bearing member <NUM> may be slidably connected to the inner wall <NUM> of the mounting cavity <NUM> through the sliding component <NUM>.

For example, there may be a plurality of sliding components <NUM>, and the sliding components <NUM> are disposed in different directions on a peripheral side of the pressure bearing member <NUM>. For example, there may be four sliding components <NUM>, and the four sliding components <NUM> may be symmetrically disposed on two sides of the pressure bearing member <NUM>. In this way, in one aspect, sliding between the pressure bearing member <NUM> and the mounting cavity <NUM> may be more stable, and stability performance of the pressing component <NUM> in the wrist strap <NUM> may be enhanced. This helps improve a pressing effect of the pressure sensor <NUM>. In another aspect, connection manners of the pressure bearing member <NUM> and the mounting cavity <NUM> may be more diversified.

In this embodiment, the sliding component <NUM> may be a pulley component. Alternatively, the sliding component <NUM> may be a guide rail component. Alternatively, the sliding component <NUM> may be a sliding structure in another form. In this embodiment, a structure form of the sliding component <NUM> is not further limited. In this embodiment, provided that the sliding component <NUM> may be connected between the pressure bearing member <NUM> and the inner wall <NUM> of the mounting cavity <NUM>, the pressure bearing member <NUM> is slidbaly connected to the inner wall <NUM> of the mounting cavity <NUM>.

In the following embodiments of this application, the electronic device in this application is further described separately by using the pulley component as an application scenario <NUM> and the guide rail component as an application scenario <NUM>.

As shown in <FIG>, in a possible implementation, in this application scenario, each sliding component <NUM> may include a first pulley <NUM> disposed on a side wall of the pressure bearing member <NUM> and a slide rail (not shown in the figure) disposed on the inner wall <NUM> of the mounting cavity <NUM>. The first pulley <NUM> and the slide rail are disposed opposite to each other, and the first pulley <NUM> may slide along the slide rail, so that the pressure bearing member <NUM> is slidbaly connected to the inner wall <NUM> of the mounting cavity <NUM>. The first pulley <NUM> and the slide rail form the foregoing pulley component. In this way, the sliding between the pressure bearing member <NUM> and the mounting cavity <NUM> may be smoother, and the pressure bearing member <NUM> may slide according to a set track of the slide rail.

Refer to <FIG>. The pressure bearing member <NUM> further includes a lifting body, and the magnet <NUM> is embedded in a lifting platform <NUM> and is fastened relative to the magnet <NUM>. The pulley component is disposed on a peripheral side of the lifting platform <NUM>. That is, the first pulley <NUM> is disposed on a side wall of the lifting platform <NUM>, so that the first pulley <NUM> may be driven by the electromagnetic driving member <NUM> to slide in the slide rail. In this way, the lifting platform <NUM> and the magnet <NUM> may be slidably connected on the inner wall <NUM> of the mounting cavity <NUM>, to move towards the measurement body part <NUM> or away from the measurement body part <NUM>.

For example, refer to <FIG>. In this embodiment, there may be four or two first pulleys <NUM>, and the four or two first pulleys <NUM> are symmetrically distributed on two sides of the pressure bearing member <NUM>, so that sliding between the pressure bearing member <NUM> and the mounting cavity <NUM> is smoother, and connection stability between the pressure bearing member <NUM> and the mounting cavity <NUM> may be improved.

To limit the first pulley <NUM>, refer to <FIG> and <FIG>, a limiting part <NUM> is disposed at an opening <NUM> of the mounting cavity <NUM>, and the limiting part <NUM> is correspondingly disposed outside the first pulley <NUM> in a pressing direction. In other words, the limiting part <NUM> is disposed corresponding to the first pulley, and is located on a side that is of the first pulley and that faces the measurement body part <NUM>. In this way, in one aspect, a movable stroke of the pressure bearing member <NUM> may be limited through the limiting part <NUM>. In another aspect, the first pulley <NUM> may be shielded, so as to enhance aesthetics and sealing performance of the electronic device.

The limiting part <NUM> and the wrist strap <NUM> are of an integrated structure, that is, the limiting part <NUM> is formed on the wrist strap <NUM>. Alternatively, the limiting part <NUM> may be connected to the wrist strap <NUM> through clamping or another detachable connection. The limiting part <NUM> is detachably connected to the wrist strap <NUM>, so as to facilitate mounting or removing of the pressing component <NUM>. In this embodiment, whether the limiting part <NUM> and the wrist strap <NUM> are of an integrated structure is not further limited.

In a possible implementation, the limiting part <NUM> may be a plate-like structure that can shield the first pulley <NUM>. An area that is in the mounting cavity <NUM> and that is opposite to the limiting part <NUM> forms a mounting and sliding area of the first pulley <NUM>. Correspondingly, the slide rail is disposed on an inner wall <NUM> of the mounting and sliding area in the mounting cavity <NUM>.

It should be understood that, in this embodiment, the opening <NUM> of the mounting cavity <NUM> is formed on a side that is of the mounting cavity <NUM> and that faces the measurement body part <NUM>. A size of the mounting cavity <NUM> should adapt to a size of the pressing component <NUM>. In this embodiment, a size and a shape of an accommodating cavity are not further limited.

To further guide the movable stroke of the pressure bearing member <NUM>, in this embodiment, a guide member <NUM> (as shown in <FIG> and <FIG>) is further disposed between the pressure bearing member <NUM> and the electromagnetic driving member <NUM>, a first guide groove <NUM> corresponding to the guide member <NUM> is further disposed in the electromagnetic driving member <NUM>, a first end of the guide member <NUM> is connected to the magnet <NUM>, and a second end of the guide member <NUM> passes through the first guide groove <NUM> and may move in an extension direction of the first guide groove <NUM>. In this way, the guide member <NUM> slides in the first guide groove <NUM>, so that movement of the pressure bearing member <NUM> may be better guided.

The extension direction of the first guide groove <NUM> may be understood as an extension (as shown in <FIG> and <FIG>) of the first guide groove <NUM> to the wrist strap <NUM> on a side that is of the electromagnetic driving member <NUM> and that is away from the measurement body part <NUM>. In this way, a guide range of the guide member <NUM> for the pressure bearing member <NUM> may be expanded by using the extension direction of the first guide groove <NUM>. To improve assembly stability of the pressing component <NUM> in the wrist strap <NUM>, the wrist strap <NUM> may be a metal wrist strap, a fluoro rubber wrist strap, or another wrist strap made of a material that is not easy to deform with the pressing component <NUM>. In this way, deformation of the wrist strap <NUM> relative to the pressing component <NUM> or the pressure sensor <NUM> may be avoided, so that the pressing component <NUM> is more securely connected in the wrist strap <NUM>. This helps improve stability performance of the electronic device.

In a possible implementation, when the electronic device in this application does not measure blood pressure, the pressure sensor <NUM> may be even with a surface of the wearing structure <NUM>, that is, a surface that is of the pressure sensor <NUM> and that is close to the measurement body part <NUM> and a surface that is of the wearing structure <NUM> and that is close to the measurement body part <NUM> are in a same plane. In this case, the pressure bearing member <NUM> is totally located in the wearing structure <NUM>. Alternatively, the pressure sensor <NUM> may protrude from a surface (as shown in <FIG>) of the wearing structure <NUM> (for example, the wrist strap <NUM>). To be specific, a surface that is of the pressure sensor <NUM> and that is close to the measurement body part <NUM> is closer to the measurement body part <NUM> than a surface that is of the wearing structure <NUM> and that is close to the measurement body part <NUM>, so that at least a portion of the pressure sensor <NUM> is exposed inside the wrist strap <NUM>. In this way, when the pressure sensor <NUM> presses the measurement body part <NUM>, the pressure sensor <NUM> may be disposed in a more diversified manner. This helps improve diversity of the electronic device.

<FIG> is a principle block diagram of blood pressure measurement performed by an electronic device according to an embodiment of this application.

Refer to <FIG>. In this embodiment, the electronic device further includes a processor <NUM>. The processor <NUM> is electrically connected to the pressure sensor <NUM>. The processor <NUM> is configured to filter and perform fitting processing on an obtained pulse wave signal, and measure a blood pressure value of a user based on the obtained pulse wave signal. In this way, blood pressure of the user may be measured through the processor <NUM> and the pressure sensor <NUM>, so that the user monitors the blood pressure in real time and manages the blood pressure.

In this embodiment, the processor <NUM> may be an electronic device such as a processor <NUM> in a smartwatch, and the processor <NUM> processes a pulse wave signal and calculates a blood pressure value. For example, the processor <NUM> may be a microcontroller unit (microcontroller unit, MCU).

In a possible implementation, in this embodiment, a signal conversion module <NUM> in the processor <NUM> may be used to perform signal conversion processing on the pulse wave signal obtained by the pressure sensor <NUM>, and then transmit a converted pulse wave signal to the processor <NUM>, or convert a control signal of the processor <NUM>, and then transmit a converted control signal to an electromagnet. Alternatively, refer to <FIG>. In this embodiment, a signal conversion module <NUM> may be additionally disposed to perform signal conversion alternatively. The signal conversion module <NUM> includes a digital/analog conversion module <NUM> and an analog/digital conversion module <NUM>. The electromagnet is electrically connected to the processor <NUM> through the digital/analog conversion module <NUM>. The digital/analog conversion module <NUM> is configured to convert a digital control signal sent by the processor <NUM> into an analog signal, so as to control whether the electromagnet is powered on and a direction of a current. In this way, existence of a magnetic field of the electromagnet and a polarity of the electromagnet are controlled. The pressure sensor <NUM> is electrically connected to the processor <NUM> through the analog-to-digital conversion module <NUM>. The analog-to-digital conversion module <NUM> is configured to obtain a pulse wave signal of the pressure sensor <NUM>, convert the pulse wave signal into a digital signal, and transmit the digital signal to the processor <NUM>. The processor <NUM> may control, based on a magnitude of the pulse wave signal by controlling the polarity of the electromagnet, whether the pressure bearing member <NUM> continues to drive the pressure sensor <NUM> to press the measurement body part <NUM>. For example, when a pressure value of the pulse wave signal obtained by the pressure sensor <NUM> reaches a preset upper limit of the pressure value, the processor <NUM> may control the polarity of the electromagnet (that is, reverse electrification) by controlling a direction of an electrified current, so that the electromagnet and the polarity of the magnet <NUM> magnetically attract each other. In this case, under an action of an attraction force, the pressure bearing member <NUM> may drive the pressure sensor <NUM> to gradually move towards a side away from the measurement body part <NUM>, so that pressure of the pressure sensor <NUM> on the measurement body part <NUM> gradually decreases. When the pressure sensor <NUM> and the pressure bearing member <NUM> are fastened, the pressure sensor <NUM> and the pressure bearing member <NUM> may return gradually.

To help the user directly obtain the blood pressure value, refer to <FIG>. The electronic device further includes a display <NUM>. The display <NUM> is electrically connected to the processor <NUM>, and is configured to display the blood pressure value. In this way, the measured blood pressure value may be intuitively displayed through the display <NUM>, so that it is convenient for the user to obtain the blood pressure value.

The display <NUM> may be a display <NUM> on an electronic device body. For example, when the electronic device is a smartwatch, the display <NUM> that is on the electronic device and that is configured to display a blood pressure value may be a display <NUM> of the smartwatch. In this way, the user can intuitively observe the measured blood pressure value directly through the display <NUM> of the smartwatch.

Specifically, in this embodiment, a storage module <NUM> may be disposed in the electronic device. The storage module <NUM> is electrically connected to the processor <NUM> and the pressure sensor <NUM>, and may be configured to store a measured blood pressure value, and may store a database used for blood pressure calculation. The processor <NUM> may calculate the blood pressure value according to an algorithm in the database in the storage module <NUM>.

Further, the electronic device further includes a wireless communication module <NUM>, and the wireless communication module <NUM> is electrically connected to the processor <NUM>. In this way, communication with the wearing structure <NUM> of the electronic device or an external device may be implemented through the wireless communication module <NUM>. Therefore, functions of the electronic device are more diversified.

It should be understood that the electronic device further includes a power supply (not shown in the figure) configured to supply power. The power supply is electrically connected to a power consuming module, for example, the power supply is electrically connected to the processor <NUM>, the display <NUM>, the wireless communication module <NUM>, the signal conversion module <NUM>, the electromagnet, and the like. The power supply may be a power supply of the electronic device, or may be an additional power supply disposed in the electronic device such as a wrist strap <NUM> or an electronic body <NUM>.

The electronic device in this embodiment of this application includes a wearing structure <NUM>, a pressing component <NUM>, and a pressure sensor <NUM>. The pressing component <NUM> is disposed on the wearing structure <NUM>, and the pressure sensor <NUM> is disposed on the pressing component <NUM>. In this way, in one aspect, the pressure sensor <NUM> may press the measurement body part <NUM>, so that the electronic device is wearable and has a blood pressure measurement function. In another aspect, the pressure sensor <NUM> may be assembled on the wearing structure <NUM> through the pressing component <NUM>. This helps improve an integrated structure of the electronic device.

It should be noted that, because a mounting cavity <NUM> is disposed in the wrist strap <NUM>, a gap inevitably exists between the pressure bearing member <NUM> and the mounting cavity <NUM>. To improve sealing performance of the electronic device such as a watch <NUM>, an elastic sealing member (not shown in the figure) may be connected between the pressure bearing member <NUM> and the mounting cavity <NUM>. This ensures that the electronic device has specific sealing performance while implementing blood pressure measurement. For example, the elastic member includes but is not limited to silica gel.

In this application, the pressing component and the pressure sensor are disposed on the wearing structure of the electronic device. The pressing component includes an electromagnetic driving member and the pressure bearing member, and the pressure bearing member may move under an electromagnetic force of the electromagnetic driving member. The pressure sensor is disposed on the pressure bearing member, and is located on a surface that is of the wearing structure and that faces the measurement body part of the user. In this way, in one aspect, the pressure sensor <NUM> may be driven by the electromagnetic driving member to press the measurement body part, to obtain a pulse wave signal of the measurement body part. This implements blood pressure measurement. In another aspect, the pressing component and the pressure sensor are both disposed on the wearing structure of the electronic device, so that an integration degree of the electronic device in this application is high.

In addition, this embodiment also provides an electronic device of another structure. <FIG> is a schematic diagram of another structure of the electronic device in <FIG> according to an embodiment of this application. <FIG> is a top view of the electronic device in <FIG> according to an embodiment of this application. <FIG> is a schematic diagram of a structure of the electronic device in <FIG> according to an embodiment of this application during blood pressure measurement.

On the basis of the foregoing, a difference between Scenario <NUM> and the foregoing Scenario <NUM> lies in that the sliding component <NUM> in this embodiment is a guide rail component. The pressure bearing member <NUM> in this scenario is a magnet <NUM>. The sliding component <NUM> includes a second pulley <NUM>, a connection arm <NUM>, and a second guide groove <NUM>. The second pulley <NUM>, the connection arm <NUM>, and the second guide groove <NUM> form the guide rail component. It should be noted that, for ease of describing a difference of the sliding component <NUM>, <FIG> mainly show a main structure of the electronic device including the sliding component <NUM>, and a structure such as the wrist strap <NUM> is not shown in the figure.

The second guide groove <NUM> and the mounting cavity <NUM> are fastened relative to each other, that is, the second guide groove <NUM> and the mounting cavity <NUM> do not move relative to each other. An extension direction of the second guide groove <NUM> is mutually staggered with a pressing direction of the electromagnetic driving member <NUM>. In other words, the extension direction of the second guide groove <NUM> is mutually crossed with the pressing direction of the electromagnetic driving member <NUM>.

For example, when the extension direction of the second guide groove <NUM> is parallel to a length direction of the wrist strap <NUM> (namely, the horizontal direction in <FIG> and <FIG>), the pressing direction of the electromagnetic driving member <NUM> may be a direction perpendicular to the length direction of the wrist strap <NUM>, namely, a width direction of the wrist strap <NUM>. A first end of the connection arm <NUM> is hinged with the pressure bearing member <NUM>, and the second pulley <NUM> is disposed at a second end of the connection arm <NUM>. The second pulley <NUM> may slide in the guide groove, and the second pulley <NUM> is hinged with the second end of the connection arm <NUM>, so that the connection arm <NUM> drives the pressure bearing member <NUM> to move in the pressing direction. In this way, sliding between the pressure bearing member <NUM> and the mounting cavity <NUM> may be smoother through the sliding component <NUM>, and the moveable stroke of the pressure bearing member <NUM> may be limited through the sliding component <NUM>.

When blood pressure needs to be measured, driven by the electromagnetic driving member <NUM>, the pressure bearing member <NUM>, along with the connection arm <NUM>, moves towards the measurement body part <NUM> of the user (that is, move towards the top in <FIG>), and presses the measurement body part <NUM>. On the contrary, when an upper limit of pressure in a pulse wave signal is reached or the pressure bearing member <NUM> needs to return, driven by the electromagnetic driving member <NUM> or pressed by another external force, the pressure bearing member <NUM> moves, along with the connection arm <NUM>, in a direction away from the measurement body part <NUM> of the user, that is, moves towards the bottom in <FIG>, until moving to a state shown in <FIG>, and the pressure bearing member <NUM> returns to the wrist strap <NUM>.

For example, refer to <FIG>. In this embodiment, there may be four or two sliding components <NUM>, and the four or two sliding components <NUM> are symmetrically distributed on two sides of the pressure bearing member <NUM>, so that sliding between the pressure bearing member <NUM> and the mounting cavity <NUM> is smoother, and connection stability between the pressure bearing member <NUM> and the mounting cavity <NUM> may be improved.

It should be understood that when the pressure bearing member <NUM> moves, the connection arm <NUM> moves in the second guide groove <NUM> through the second pulley <NUM>. Therefore, a length of the connection arm <NUM> and a length of the second guide groove <NUM> may be adjusted to limit a movable stroke of the pressure bearing member <NUM>.

In a possible implementation, the first end of the connection arm <NUM> may be hinged with the pressure bearing member <NUM> through the second pulley <NUM>, that is, the second pulley <NUM> is fastened on a side wall of the pressure bearing member <NUM>, and the first end of the connection arm <NUM> is hinged with the second pulley.

For example, the second guide groove <NUM> may be located in the mounting cavity <NUM>. In this case, the connection arm <NUM> passes through the mounting cavity <NUM>. Alternatively, the second guide groove <NUM> may be formed as a cavity (not shown in the figure) in communication with the mounting cavity <NUM>. In this way, the sliding component <NUM> and the electronic device may be disposed in more diversified manners when the second pulley <NUM> slides in the second guide groove <NUM>. When the cavity is formed in the wrist strap <NUM>, the second guide groove <NUM> is also located in the wrist strap <NUM>. In this case, the connection arm <NUM> may pass through the mounting cavity <NUM> and the cavity (as shown in <FIG>).

Alternatively, in a possible implementation, when the second guide groove <NUM> is located on an outer sidewall outside the wrist strap <NUM>, the connection arm <NUM> may also be located on the outer sidewall of the wrist strap <NUM> and located outside the mounting cavity <NUM>.

Claim 1:
A wearable electronic device (<NUM>), comprising:
a pressing component (<NUM>);
a pressure sensor (<NUM>);
wherein the pressing component (<NUM>) comprises an electromagnetic driving component (<NUM>) and a pressure bearing component (<NUM>); wherein the pressure bearing component (<NUM>) may move under an electromagnetic force of the electromagnetic driving component (<NUM>);
the pressure sensor (<NUM>) is disposed on the pressure bearing component (<NUM>), and the pressure sensor (<NUM>) is located on a surface that is of the pressure bearing component (<NUM>) and that faces a measurement body part of a user;
the pressure bearing component (<NUM>) is configured to be driven by the electromagnetic driving component (<NUM>) to press the pressure sensor (<NUM>) on the measurement body part, and
the pressure sensor (<NUM>) is configured to detect a pulse wave signal of the measurement body part,
wherein the electronic device comprises a wrist strap (<NUM>) and an electronic body (<NUM>), the wrist strap (<NUM>) is connected to the electronic body (<NUM>), and the pressing component (<NUM>) is disposed in the wrist strap (<NUM>),
wherein a mounting cavity is disposed on a surface that is in the wrist strap (<NUM>) and that faces the measurement body part, and at least a portion of the pressing component (<NUM>) is disposed in the mounting cavity (<NUM>),
wherein the pressure bearing component (<NUM>) is slidably connected to an inner wall of the mounting cavity (<NUM>).