Stylus and electronic devices

Abstract

The present application discloses a stylus pen and an electronic device, belonging to the field of physiological data detection technology. The stylus pen comprises: a body, a main control circuit arranged in the inner cavity of the body, a pen cap arranged at the first end of the body, and a sensor assembly arranged on the first surface of the pen cap; wherein the sensor assembly is used to detect the blood pressure of the user, and the sensor assembly is connected to the main control circuit; when detecting the blood pressure of the user, the first surface of the pen cap is in contact with the skin of the user.

Description

Technical Field

[0001] The present application belongs to the technical field of vital sign monitoring and detection, and specifically relates to a stylus pen and an electronic device. Background Art

[0002] Typically, when a user wants to measure the user's physiological data (such as blood pressure, etc.), the user can fix the cuff of the blood pressure measuring instrument on the user's arm, inflate the cuff, and listen to the sound of blood flowing in the brachial artery of the arm through a stethoscope to determine the user's blood pressure based on the sound.

[0003] However, since the user may want to measure the user's blood pressure multiple times within a certain period of time, the user needs to carry a blood pressure measuring instrument with him / her during the certain period of time and use the blood pressure measuring instrument multiple times according to the above method to determine the user's blood pressure multiple times.

[0004] Therefore, there is an inconvenience in measuring the blood pressure of the user. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a stylus pen and an electronic device that can solve the inconvenience of measuring a user's blood pressure.

[0006] In a first aspect, an embodiment of the present application provides a stylus pen, comprising: a main body, a main control circuit arranged in an inner cavity of the main body, a pen cap arranged at a first end of the main body, and a sensor assembly arranged on a first surface of the pen cap; wherein the above-mentioned sensor assembly is used to detect the user's blood pressure, and the above-mentioned sensor assembly is connected to the main control circuit; when detecting the user's blood pressure, the first surface of the pen cap is in contact with the user's skin.

[0007] In a second aspect, an embodiment of the present application provides an electronic device, which includes the stylus pen as described in the first aspect.

[0008] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0009] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0010] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

[0011] In an embodiment of the present application, a stylus pen of an electronic device includes: a body, a main control circuit disposed in the body, a pen cap disposed at one end of the body, and a sensor assembly disposed on a first surface of the pen cap for detecting a user's blood pressure, wherein the sensor assembly is connected to the main control circuit, and when detecting the user's blood pressure, the first surface is in contact with the user's skin. Since a sensor assembly for detecting the user's blood pressure is disposed on the pen cap of the body of the stylus pen, the user can carry the stylus pen with him / her, and when he / she wants to measure the user's blood pressure, he / she can directly contact the first surface of the pen cap with the user's skin, so that the sensor assembly can detect the user's blood pressure to determine the user's blood pressure, without the user having to carry a blood pressure measuring instrument with him / her, and using the blood pressure measuring instrument multiple times using the method in the related art, thereby improving the convenience of measuring the user's blood pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is one of the structural schematic diagrams of the stylus provided in the embodiment of the present application;

[0013] Figure 2 This is the second structural schematic diagram of the stylus provided in the embodiment of the present application;

[0014] Figure 3 This is the third structural schematic diagram of the stylus provided in the embodiment of the present application;

[0015] Figure 4 This is one of the schematic diagrams of the top view position relationship of the PPG sensor and the pressure sensor of the stylus provided in the embodiment of the present application;

[0016] Figure 5 is a schematic diagram of the side position relationship of the PPG sensor and the pressure sensor of the stylus provided in an embodiment of the present application;

[0017] Figure 6 This is the second schematic diagram of the top view position relationship of the PPG sensor and the pressure sensor of the stylus provided in the embodiment of the present application;

[0018] Figure 7 is a circuit diagram of a pressure sensor of a stylus provided in an embodiment of the present application;

[0019] Figure 8 This is the third schematic diagram of the top view position relationship of the PPG sensor and the pressure sensor of the stylus provided in the embodiment of the present application;

[0020] Fig. 9This is the fourth structural schematic diagram of the stylus provided in the embodiment of the present application;

[0021] Fig.10 This is the fifth structural schematic diagram of the stylus provided in the embodiment of the present application;

[0022] Fig.11 This is the fourth schematic diagram of the top view position relationship of the PPG sensor and the pressure sensor of the stylus provided in the embodiment of the present application;

[0023] Fig.12 FIG5 is a fifth schematic diagram of the top view position relationship of the PPG sensor and the pressure sensor of the stylus provided in the embodiment of the present application;

[0024] Fig.13 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] The stylus pen and the electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0028] Figure 1 A possible structural diagram of a stylus provided in an embodiment of the present application is shown. Figure 1 As shown, the stylus pen 10 includes a body 11 , a main control circuit 12 disposed in an inner cavity of the body 11 , a pen cap 13 disposed at a first end of the body 11 , and a sensor assembly 14 disposed on a first surface of the pen cap 13 .

[0029] In the embodiment of the present application, the sensor assembly 14 is used to detect the user's blood pressure, and the sensor assembly 14 is connected to the main control circuit 12; when detecting the user's blood pressure, the first surface of the pen cap 13 is in contact with the user's skin.

[0030] Optionally, in the embodiment of the present application, the main body 11 may include a stylus pen holder and a stylus pen tip; the shape of the stylus pen holder may be any one of the following: a cylinder, a rectangle, an ellipsoid, a sphere, an irregular solid, etc.

[0031] Optionally, in the embodiment of the present application, the main control circuit 12 is fixedly connected to the inner cavity of the body 11 (for example, bonded), or the main control circuit 12 can be fixedly connected to the inner cavity of the body 11 through a connecting component.

[0032] Optionally, in the embodiment of the present application, the first end may specifically be: an end away from the tip of the stylus pen.

[0033] Optionally, in the embodiment of the present application, the above-mentioned pen cap 13 can be: a pen cap with an inner cavity, and an opening of the inner cavity of the pen cap 13 is opened on the second surface of the pen cap 13, and the second surface is: the side of the pen cap 13 away from the first surface, and the shape of the pen cap 13 can be any one of the following: cylinder, rectangle, ellipsoid, sphere, irregular solid, etc.

[0034] Optionally, in the embodiment of the present application, the shape of the pen cap 13 may be the same as the shape of the stylus pen holder.

[0035] Optionally, in the embodiment of the present application, the pen cap 13 can be connected to the body 11 in an integrally formed manner, or the pen cap 13 can be gap-fitted with the first end of the body 11 .

[0036] Further optionally, in the embodiment of the present application, when the pen cap 13 and the first end of the body 11 are gap-fitted, the second surface of the pen cap 13 can be inserted into the body 11 through the opening of the inner cavity of the body 11, or the first end of the body 11 can be inserted into the pen cap 13 through the opening of the inner cavity of the pen cap 13; the pen cap 13 and the body 11 can move relative to each other in the radial direction of the body 11.

[0037] Optionally, in the embodiment of the present application, combined with Figure 1 ,like Figure 2 As shown, when the pen cap 13 and the first end are in clearance fit, the stylus pen 10 further includes an elastic component 15 .

[0038] In the embodiment of the present application, the above-mentioned first end is inserted into the pen cap 13 through the opening of the inner cavity of the pen cap 13; the first end is provided with a first opening 16 of the inner cavity of the main body 11; a fixing component 17 is provided on the side wall of the inner cavity of the main body 11; one end of the above-mentioned elastic component 15 is connected to the bottom end surface 18 of the inner cavity of the pen cap 13, and the other end of the elastic component 15 passes through the first opening 16 and is connected to the fixing component 17; the bottom end surface 18 and the first surface 19 are different surfaces of the same end of the pen cap 13.

[0039] Further optionally, in the embodiment of the present application, the elastic component 15 may be any one of the following: a spring, a spring sheet, an elastic telescopic rod, etc.

[0040] Exemplarily, when the elastic component 15 is a spring, the spring may specifically be a coil spring.

[0041] Further optionally, in the embodiment of the present application, the above-mentioned fixing component 17 can be: at least two fixing blocks fixedly connected to the side wall of the inner cavity of the main body 11 (for example, bonding, integrally formed connection, etc.), or a fixing ring arranged around the side wall of the inner cavity of the main body 11.

[0042] In the embodiment of the present application, when detecting the user's blood pressure, the elastic component 15 is in an elastically deformed state.

[0043] Further optionally, in the embodiment of the present application, combined with Figure 2 ,like Figure 3 As shown, the stylus pen 10 may further include a sleeve 20 . One end of the sleeve 20 is fixedly connected (eg, bonded) to the bottom end surface 18 , and the other end of the sleeve 20 is disposed through the first opening 16 .

[0044] Specifically, one end of the flexible circuit board is connected to the sensor assembly 14, and the other end of the flexible circuit board passes through the sleeve 20 and is connected to the main control circuit 12. It can be understood that the sleeve 20 can protect the flexible circuit board so that the flexible circuit board will not be damaged by the elastic component 15.

[0045] In the embodiment of the present application, the pen cap 13 and the first end can move relative to each other in the radial direction of the main body 11, and an elastic component 15 is arranged between the pen cap 13 and the main body 11, so that when detecting the user's blood pressure, a predetermined pressing range and pressure feedback can be provided for the user's skin.

[0046] It can be seen that since the pen cap and the first end are gap-fitted, and an elastic component is arranged between the pen cap and the body, and when the user's blood pressure is detected, the elastic component is in an elastic deformation state, therefore, the pressure of the first surface on the user's skin can be reduced, thereby improving the user's experience in the process of detecting the user's blood pressure.

[0047] Optionally, in the embodiment of the present application, the sensor assembly 14 may include at least one of the following: a photoplethysmo graphic (PPG) sensor, a pressure sensor, etc. The sensor assembly 14 may be connected to the main control circuit 12 via a flexible printed circuit (FPC).

[0048] Optionally, in the embodiment of the present application, the main control circuit 12 can be connected to a power source and provide power for the sensor assembly 14. The main control circuit 12 can be arranged on a hard printed circuit board (PCB), and the hard printed circuit board is connected to the flexible printed circuit board through a connector.

[0049] Optionally, in an embodiment of the present application, when detecting the user's blood pressure, the user can hold the stylus pen 10 by the stylus pen shaft, fit the first surface 19 of the pen cap 13 against the user's skin, and apply a force toward the user's skin to the stylus pen 10, so that the sensor assembly 14 can detect the user's blood pressure.

[0050] Optionally, in a possible implementation of an embodiment of the present application, when detecting the user's blood pressure, the sensor component 14 can be in contact with the user's skin and obtain the user's blood pressure data, so that the sensor component 14 can send the blood pressure data to the main control circuit 12, so that the main control circuit 12 can determine the user's blood pressure based on the blood pressure data, and the main control circuit 12 can send the user's blood pressure to the electronic device corresponding to the stylus 10 through the wireless network module of the stylus 10, and the user can check the user's blood pressure on the electronic device.

[0051] Further optionally, in the embodiment of the present application, the wireless network module may include at least one of the following: a wireless fidelity (WiFi) module, a Bluetooth module, etc.

[0052] It should be noted that for instructions on determining the user's blood pressure based on blood pressure data, reference may be made to the specific description in the relevant technology, and the embodiments of the present application will not be elaborated here.

[0053] Optionally, in another possible implementation of the embodiment of the present application, when detecting the user's blood pressure, the sensor component 14 can obtain the user's blood pressure data and send the blood pressure data to the main control circuit 12, so that the main control circuit 12 can send the blood pressure data to the electronic device corresponding to the stylus 10 through the wireless network module of the stylus 10, so that the electronic device can determine the user's blood pressure based on the blood pressure data, and then the user can view the user's blood pressure on the electronic device.

[0054] In the embodiment of the present application, since the size of the stylus pen is small, the user can carry the stylus pen 10 with him. If the user wants to measure the user's blood pressure multiple times within a certain period of time, the user can directly fit the first surface 19 of the cap 13 of the stylus pen 10 to the user's skin, so that the sensor component 14 can obtain the user's blood pressure data to determine the user's blood pressure.

[0055] The stylus provided in the embodiment of the present application includes: a body, a main control circuit disposed in the body, a pen cap disposed at one end of the body, and a sensor assembly disposed on the first surface of the pen cap for detecting the user's blood pressure, wherein the sensor assembly is connected to the main control circuit, and when detecting the user's blood pressure, the first surface is in contact with the user's skin. Since the sensor assembly for detecting the user's blood pressure is disposed on the pen cap of the body of the stylus, the user can carry the stylus with him / her, and when he / she wants to measure the user's blood pressure, he / she can directly contact the first surface of the pen cap with the user's skin, so that the sensor assembly can detect the user's blood pressure to determine the user's blood pressure, without the need for the user to carry a blood pressure measuring instrument with him / her, and use the blood pressure measuring instrument multiple times using the method in the related art, thereby improving the convenience of measuring the user's blood pressure.

[0056] Furthermore, the embodiments of the present application can measure the blood pressure of a user without adding additional independent functional devices to the electronic device, thereby reducing the cost of measuring the blood pressure of the user through the electronic device.

[0057] The following will take the example that the sensor assembly 14 includes different sensors for illustration.

[0058] Optionally, in a possible implementation of the present application, the sensor assembly 14 includes: a PPG sensor and a pressure sensor.

[0059] Further optionally, in the embodiment of the present application, the pressure sensor may specifically be a capacitive pressure sensor.

[0060] It can be understood that the capacitive pressure sensor may include: an active electrode, a stationary electrode and a supporting device, wherein the stationary electrode is arranged on the supporting device. When detecting the user's blood pressure, the active electrode is deformed toward the stationary electrode under the force of the user's skin, thereby changing the distance between the active electrode and the stationary electrode, and then changing the capacitance value corresponding to the capacitive pressure sensor. In this way, the capacitive pressure sensor can obtain pressure data.

[0061] In the embodiment of the present application, the above-mentioned blood pressure data may include: pulse waveform PPG data and pressure data.

[0062] It can be understood that the main control circuit 12 (or the electronic device corresponding to the stylus 10) can determine the user's blood pressure based on the pulse waveform PPG data and pressure data.

[0063] It should be noted that for instructions on determining the user's blood pressure based on the pulse waveform PPG data and pressure data, reference may be made to the specific description in the relevant technology, and the embodiments of the present application will not be elaborated here.

[0064] It can be seen that since the sensor assembly includes a PPG sensor and a pressure sensor, the user's pulse wave waveform PPG data can be obtained through the PPG sensor, and the user's pressure data can be obtained through the pressure sensor. In this way, the main control circuit can determine the user's blood pressure based on the pulse wave waveform PPG data and pressure data, rather than determining the user's blood pressure only based on the pulse wave waveform PPG data or pressure data. Therefore, the accuracy of determining the user's blood pressure can be improved.

[0065] In a possible implementation, the PPG sensor includes: a light emitting unit and a light receiving unit; wherein the light emitting unit and the light receiving unit are symmetrically arranged on both sides of the pressure sensor.

[0066] It should be noted that in order to more clearly illustrate the positional relationship between the PPG sensor and the pressure sensor, Figure 4 FIG. 4 shows a schematic diagram of the top view position relationship of the PPG sensor and the pressure sensor provided in the embodiment of the present application. Figure 4 As shown, the PPG sensor includes: a light emitting unit 21 and a light receiving unit 22, and the light emitting unit 21, the light receiving unit 22 and the pressure sensor 23 are all arranged on the first surface 19, and the light emitting unit 21 and the light receiving unit 22 are symmetrically arranged on both sides of the pressure sensor 23.

[0067] Further optionally, in the embodiment of the present application, the light emitting unit 21 may specifically be a light emitting diode; and the light receiving unit 22 may specifically be a photodiode.

[0068] It can be understood that the light emitting unit 21 can emit light toward the user's skin, so that the light receiving unit 22 can receive the reflected light of the light to obtain the pulse wave waveform PPG data.

[0069] It should be noted that in order to more clearly illustrate the positional relationship between the PPG sensor and the pressure sensor, Figure 5 FIG. 4 shows a schematic diagram of the side position relationship of the PPG sensor and the pressure sensor provided in an embodiment of the present application. Figure 5As shown, the PPG sensor includes: a light emitting unit 21 and a light receiving unit 22, the light emitting unit 21, the light receiving unit 22 and the pressure sensor 23 are all arranged on the first surface 19, the pressure sensor 23 includes: an active electrode 24, a stationary electrode 25 and a supporting device 26, the light emitting unit 21 and the light receiving unit 22 are symmetrically arranged on both sides of the pressure sensor 23, so that when detecting the user's blood pressure, the active electrode 24 can be deformed toward the stationary electrode 25, and the light emitting unit 21 can emit light toward the user's skin, and the light receiving unit 22 can receive the reflected light of the light.

[0070] In the embodiment of the present application, the light emitting unit 21 and the light receiving unit 22 are symmetrically arranged on both sides of the pressure sensor 23. On the one hand, the light emitted by the light emitting unit 21 can be blocked by the pressure sensor 23 to avoid the light emitted by the light emitting unit 21 being directly received by the light receiving unit 22 without being reflected by the user's skin, thereby avoiding signal crosstalk between the light reflecting unit and the light receiving unit to improve the signal-to-noise ratio of the pulse wave waveform PPG data; on the other hand, the pulse wave waveform PPG data and pressure data corresponding to the same part of the user's skin can be obtained, and the user's blood pressure can be accurately obtained based on the pulse wave waveform PPG data and pressure data.

[0071] It can be seen that since the light emitting unit and the light receiving unit of the PPG sensor are symmetrically arranged on both sides of the pressure sensor, signal crosstalk between the light reflecting unit and the light receiving unit can be avoided, and the acquisition of pulse wave waveform PPG data and pressure data corresponding to different parts of the user's skin can be avoided. In this way, the accuracy of determining the user's blood pressure can be improved.

[0072] It can be understood that the pressure sensor 23 is disposed between the light emitting unit 21 and the light receiving unit 22, which can improve the signal quality of the pulse waveform PPG data and has a symmetrical appearance design.

[0073] In another possible implementation, the pressure sensor includes: at least two piezoresistors; wherein the at least two piezoresistors are arranged around the PPG sensor.

[0074] Further optionally, in the embodiment of the present application, the at least two varistors may specifically be: four varistors. The four varistors are interconnected through a flexible circuit board to form a Wheatstone bridge pressure sensor, and the flexible circuit board is fixedly connected (e.g., bonded) to the bottom end surface 18. For the description of the Wheatstone bridge pressure sensor, reference may be made to the specific description in the related art, and the embodiment of the present application will not be repeated here.

[0075] It should be noted that in order to more clearly illustrate the positional relationship between the PPG sensor and the pressure sensor, Figure 6 FIG. 4 shows a schematic diagram of the top view position relationship of the PPG sensor and the pressure sensor provided in the embodiment of the present application. Figure 6 As shown, the pressure sensor includes: at least two piezoresistors, such as piezoresistors R1, R2, R3 and R4, wherein the piezoresistors R1, R2, R3, R4 and the PPG sensor 27 are all arranged on the first surface 19, and the piezoresistors R1, R2, R3 and R4 are arranged around the PPG sensor 27.

[0076] Figure 7 The circuit diagram of the pressure sensor provided in the embodiment of the present application is shown as follows: Figure 7 As shown, the pressure sensor includes: the varistor R1, the varistor R2, the varistor R3 and the varistor R4, the first end of the varistor R1 is connected to the Vs end and the first end of the varistor R3, the second end of the varistor R1 is connected to the Vp end and the first end of the varistor R2, the second end of the varistor R2 is connected to the ground end and the second end of the varistor R4, and the first end of the varistor R4 is connected to the second end of the varistor R3 and the Vn end to form a Wheatstone bridge.

[0077] In an embodiment of the present application, at least two piezoresistors are arranged around the PPG sensor. On the one hand, the detection area of ​​the pressure sensor for detecting pressure can be increased. On the other hand, the at least two piezoresistors can be connected in the form of a Wheatstone bridge, thereby reducing the impact of common-mode noise on the signal and amplifying the voltage change corresponding to the resistance change.

[0078] It can be seen that since at least two piezoresistors of the pressure sensor are arranged around the PPG sensor, the detection area of ​​the pressure sensor for detecting pressure can be increased, and the noise of the signal can be reduced, thereby improving the accuracy of the acquired pressure data, thus improving the accuracy of determining the user's blood pressure.

[0079] Optionally, in the embodiment of the present application, combined with Figure 6 ,like Figure 8 As shown, the stylus pen 10 further includes a blocking sleeve 28 .

[0080] In the present application embodiment, combined Figure 8 The blocking sleeve 28 is used to block light; the blocking sleeve 28 includes: a third accommodating space and a fourth accommodating space, the light emitting unit 29 is located in the third accommodating space, and the light receiving unit 30 is located in the fourth accommodating space.

[0081] Further optionally, in the embodiment of the present application, the blocking sleeve 28 can be made of a light shielding material (such as a silicone material). The blocking sleeve 28 can be any of the following: an annular blocking sleeve, a rectangular blocking sleeve, an irregular blocking sleeve, etc.

[0082] In the embodiment of the present application, the light emitting unit 29 and the light receiving unit 30 are both wrapped by the blocking sleeve 28, which can avoid interference from external ambient light and can also prevent the light emitted by the light emitting unit 29 from being directly received by the light receiving unit 30 without being reflected by the user's skin, thereby avoiding signal crosstalk between the light reflecting unit and the light receiving unit, thereby improving the signal-to-noise ratio of the pulse wave waveform PPG data.

[0083] It can be seen that since the stylus pen also includes a blocking cover for blocking light, and the light emitting unit and the light receiving unit are both located in different accommodating spaces of the blocking cover, it is possible to avoid interference from external ambient light while also avoiding signal crosstalk between the light reflecting unit and the light receiving unit. In this way, the accuracy of determining the user's blood pressure can be improved.

[0084] Optionally, in another possible implementation of the present application, in combination with Figure 2 ,like Fig. 9 As shown, the sensor assembly 14 includes: a PPG sensor; the stylus 10 also includes: a connecting rod 31 and a pressure detection component 32; wherein, one end of the connecting rod 31 is connected to the bottom end surface 18, and the other end of the connecting rod 31 passes through the elastic component 15 and contacts the pressure detection component 32; the pressure detection component 32 is connected to the main control circuit 12.

[0085] Further optionally, in the embodiment of the present application, the connecting rod 31 is used to transmit the pressure of the user's skin on the first surface 19 of the pen cap 13 .

[0086] Specifically, the connecting rod 31 may be a hollow connecting rod, so that one end of the flexible circuit board is connected to the sensor assembly 14 , and the other end of the flexible circuit board passes through the hollow connecting rod and is connected to the main control circuit 12 .

[0087] Further optionally, in the embodiment of the present application, the pressure detection component 32 may be: a pressure sensor, or may include a conductive component (such as the support component in the following embodiment) and a strain gauge. The strain gauge may determine the pressure data according to the deformation amount of the conductive component.

[0088] Optionally, in the embodiment of the present application, combined with Fig. 9 ,like Fig.10As shown, the pressure detection component 32 includes: a support component 33 and a strain gauge 34; wherein the support component 33 is connected to the other end of the connecting rod 31; the strain gauge 34 is arranged on the support component 33, and the strain gauge 34 is connected to the main control circuit 12.

[0089] In the embodiment of the present application, when detecting the user's blood pressure, the supporting component 33 is in a deformed state.

[0090] Further optionally, in the embodiment of the present application, the supporting component 33 may be made of an elastic material (such as rubber, etc.).

[0091] It can be understood that when detecting the user's blood pressure, the user's skin can apply pressure to the first surface 19 of the pen cap 13, so that the connecting rod 31 can apply a force to the supporting component 33 to cause the supporting component 33 to deform, so that the strain gauge 34 can obtain pressure data.

[0092] It can be seen that since the strain gauge can be set on the supporting component and the supporting component is connected to the other end of the connecting rod, the pressure on the pen cap can be transmitted through the connecting rod and the pressure can be detected by the strain gauge without setting a pressure detection component on the pen cap. Therefore, the design of the flexible circuit board can be simplified, thereby reducing the cost of the stylus pen.

[0093] In the embodiment of the present application, the sensor assembly 14 includes a PPG sensor, that is, only a PPG sensor is provided on the first surface 19 of the pen cap 13. Therefore, the detection area of ​​the PPG sensor for detecting light can be increased, and the signal-to-noise ratio of the pulse wave waveform PPG data can be improved; and the stylus 10 also includes a pressure detection component 32 arranged in the body 11. Therefore, the design of the flexible circuit board can be simplified.

[0094] It can be seen that since a PPG sensor is provided on the first surface of the pen cap and a pressure detection component is provided in the body, the accuracy of the acquired pulse wave waveform PPG data can be improved while simplifying the design of the flexible circuit board. In this way, the accuracy of determining the user's blood pressure can be improved while reducing the cost of the stylus pen.

[0095] Optionally, in the embodiment of the present application, Fig.11 As shown, the PPG sensor includes: a light emitting unit 35 and at least two light receiving units 36 , and the light emitting unit 35 and the at least two light receiving units 36 are both arranged on the first surface 19 ; wherein the at least two light receiving units 36 are arranged around the light emitting unit 35 .

[0096] Further optionally, in the embodiment of the present application, the at least two light receiving units 36 may be specifically four light receiving units. It can be understood that the four light receiving units can realize four-channel PPG pulse wave signal detection to obtain accurate pulse wave waveform PPG data.

[0097] It can be seen that since at least two pipeline receiving units are arranged around the light emitting unit, different light receiving units can receive reflected light from different directions, thereby improving the accuracy of the obtained pulse wave waveform PPG data, thereby improving the accuracy of determining the user's blood pressure.

[0098] Optionally, in the embodiment of the present application, combined with Fig.11 ,like Fig.12 As shown, the stylus pen 10 further includes a blocking sleeve 37 .

[0099] In the present application embodiment, combined Fig.12 The blocking sleeve 37 is used to block light; the blocking sleeve 37 includes: a first accommodating space and at least two second accommodating spaces, the light emitting unit 35 is arranged in the first accommodating space, and each light receiving unit 36 ​​is respectively arranged in a second accommodating space.

[0100] It should be noted that, for the description of the blocking sleeve 37 , reference may be made to the specific description of the blocking sleeve 28 in the above embodiment, and the embodiments of the present application will not be repeated here.

[0101] It can be seen that since the stylus pen also includes a blocking cover for blocking light, and the light emitting unit is located in a accommodating space of the blocking cover, and different light receiving units are located in different accommodating spaces of the blocking cover, it is possible to avoid interference from external ambient light and avoid signal crosstalk between the light reflecting unit and the light receiving unit. In this way, the accuracy of determining the user's blood pressure can be improved.

[0102] Fig.13 A possible structural diagram of an electronic device provided in an embodiment of the present application is shown. Fig.13 As shown, the electronic device 40 includes the stylus pen 10 as described in the above embodiment.

[0103] In the embodiment of the present application, since the user often carries the electronic device 40 with him, the electronic device 40 includes the stylus 10, that is, the user can carry the stylus 10 with him. If the user wants to measure the user's blood pressure multiple times within a certain period of time, the user can directly take out the stylus 10 from the electronic device 40 and put the first surface of the cap of the stylus 10 against the user's skin, so that the sensor component of the stylus 10 can obtain the user's blood pressure data to determine the user's blood pressure.

[0104] The electronic device provided by the embodiment of the present application has a sensor component for detecting the user's blood pressure provided on the pen cap of the body of the stylus of the electronic device, so that the user can carry the stylus with him / her, and when he / she wants to measure the user's blood pressure, he / she can directly fit the first surface of the pen cap against the user's skin so that the sensor component can detect the user's blood pressure to determine the user's blood pressure, without the need for the user to carry a blood pressure measuring instrument with him / her and use the blood pressure measuring instrument multiple times using the method in the related art. Therefore, the convenience of measuring the user's blood pressure can be improved.

[0105] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0106] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A touch pen, characterized in that: The touch pen comprises: a body, a main control circuit arranged in an inner cavity of the body, a pen cap arranged at a first end of the body, and a sensor assembly arranged on a first surface of the pen cap; The sensor assembly is used to detect the user's blood pressure, and the sensor assembly is connected to the main control circuit; when detecting the user's blood pressure, the first surface of the pen cap is in contact with the user's skin; In the case where the pen cap and the first end are gap-fitted, the stylus pen further comprises: an elastic component; Wherein, the first end is inserted into the pen cap through the opening of the inner cavity of the pen cap; the first end is provided with a first opening of the inner cavity of the body; and a fixing component is provided on the side wall of the inner cavity of the body; One end of the elastic component is connected to the bottom end surface of the inner cavity of the pen cap, and the other end of the elastic component passes through the first opening and is connected to the fixing component; the bottom end surface and the first surface are different surfaces of the same end of the pen cap; When detecting the user's blood pressure, the elastic component is in an elastic deformation state; The sensor assembly includes: a photoplethysmography (PPG) sensor; the stylus also includes: a connecting rod and a pressure detection component; Among them, one end of the connecting rod is connected to the bottom end surface, and the other end of the connecting rod passes through the elastic component and contacts the pressure detection component; the pressure detection component is connected to the main control circuit.

2. The touch pen according to claim 1, characterized in that: The pressure detection component includes: a support component and a strain gauge; Wherein, the support component is connected to the other end of the connecting rod; the strain gauge is arranged on the support component, and the strain gauge is connected to the main control circuit; When detecting the user's blood pressure, the supporting component is in a deformed state.

3. The touch pen according to claim 1, characterized in that: The PPG sensor comprises: a light emitting unit and at least two light receiving units; Wherein, the at least two light receiving units are arranged around the light emitting unit.

4. The touch pen according to claim 3, characterized in that: The stylus pen further comprises: a blocking sleeve; Wherein, the blocking sleeve is used to block light; the blocking sleeve comprises: a first accommodating space and at least two second accommodating spaces, the light emitting unit is arranged in the first accommodating space, and each light receiving unit is respectively arranged in a second accommodating space.

5. The touch pen according to claim 1, characterized in that: The pressure detection component includes: a pressure sensor.

6. The touch pen according to claim 5, characterized in that: The PPG sensor comprises: a light emitting unit and a light receiving unit; Wherein, the light emitting unit and the light receiving unit are symmetrically arranged on two sides of the pressure sensor.

7. The touch pen according to claim 5, characterized in that: The pressure sensor comprises: at least two piezoresistors; Wherein, the at least two piezoresistors are arranged around the PPG sensor.

8. The touch pen according to claim 6, characterized in that: The stylus pen further comprises: a blocking sleeve; Wherein, the blocking sleeve is used to block light; the blocking sleeve comprises: a third accommodating space and a fourth accommodating space, the light emitting unit is located in the third accommodating space, and the light receiving unit is located in the fourth accommodating space.

9. An electronic device, characterized in that: The electronic device comprises the stylus pen according to any one of claims 1 to 8.

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