CN113768482A - Touch control pen and electronic equipment - Google Patents
Touch control pen and electronic equipment Download PDFInfo
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- CN113768482A CN113768482A CN202110880788.XA CN202110880788A CN113768482A CN 113768482 A CN113768482 A CN 113768482A CN 202110880788 A CN202110880788 A CN 202110880788A CN 113768482 A CN113768482 A CN 113768482A
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- 230000036772 blood pressure Effects 0.000 claims abstract description 91
- 241001422033 Thestylus Species 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000013186 photoplethysmography Methods 0.000 claims description 56
- 230000000903 blocking effect Effects 0.000 claims description 29
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 18
- 238000010586 diagram Methods 0.000 description 14
- 230000001419 dependent effect Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000002302 brachial artery Anatomy 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
- A61B5/02255—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds the pressure being controlled by plethysmographic signals, e.g. derived from optical sensors
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Ophthalmology & Optometry (AREA)
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- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The application discloses touch-control pen and electronic equipment belongs to physiological data detection technical field. Wherein, the stylus pen includes: the method comprises the following steps: the pen cap 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 for detecting the blood pressure of a user and is connected with the main control circuit; when the blood pressure of the user is detected, the first face of the pen cap is attached to the skin of the user.
Description
Technical Field
The application belongs to the technical field of physical sign monitoring and detection, and particularly relates to a touch pen and electronic equipment.
Background
Generally, in a case where a user wants to measure physiological data (e.g., blood pressure, etc.) of the user, the user may fix a cuff of a blood pressure measuring instrument to an arm of the user and inflate the cuff, and listen to sound of blood flow of a brachial artery of the arm through a stethoscope to determine the blood pressure of the user based on the sound.
However, since there may be a case where the user wants to measure the user's blood pressure a plurality of times within a certain period of time, the user needs to carry the blood pressure measuring instrument with him/her within the certain period of time and use the blood pressure measuring instrument a plurality of times according to the above method to determine the user's blood pressure a plurality of times.
Therefore, inconvenience is caused in measuring the blood pressure of the user.
Disclosure of Invention
An object of the embodiment of the application is to provide a touch pen and an electronic device, which can solve the problem of inconvenience in measuring blood pressure of a user.
In a first aspect, an embodiment of the present application provides a stylus, including: the method comprises the following steps: the pen cap 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 for detecting the blood pressure of a user and is connected with the main control circuit; when the blood pressure of the user is detected, the first face of the pen cap is attached to the skin of the user.
In a second aspect, an embodiment of the present application provides an electronic device, which includes a stylus pen as described in the first aspect.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.
In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.
In an embodiment of the present application, a stylus of an electronic device includes: the body, set up in this internal master control circuit, set up in the pen cap of the one end of body and set up the sensor subassembly that is used for detecting user's blood pressure on the first face of this pen cap, wherein, this sensor subassembly and master control circuit are connected, and when detecting user's blood pressure, this first face and user's skin laminating. The sensor assembly for detecting the blood pressure of the user is arranged on the pen cap of the body of the touch pen, so that the user can carry the touch pen with him, and when the blood pressure of the user is required to be measured, the first surface of the pen cap is directly attached to the skin of the user, so that the sensor assembly can detect the blood pressure of the user to determine the blood pressure of the user, the user does not need to carry a blood pressure measuring instrument with him, and the blood pressure measuring instrument is used for multiple times by adopting a method in the related technology, so that the convenience of measuring the blood pressure of the user can be improved.
Drawings
Fig. 1 is a schematic structural diagram of a stylus provided in an embodiment of the present application;
fig. 2 is a second schematic structural diagram of a stylus according to an embodiment of the present disclosure;
fig. 3 is a third schematic structural diagram of a stylus according to an embodiment of the present disclosure;
fig. 4 is one of schematic top-view positional relationships of a PPG sensor and a pressure sensor of a stylus provided in an embodiment of the present application;
fig. 5 is a schematic side view of a PPG sensor and a pressure sensor of a stylus provided in an embodiment of the present application;
fig. 6 is a second schematic diagram illustrating a top-view position relationship between a PPG sensor and a pressure sensor of a stylus provided in the embodiment of the present application;
FIG. 7 is a circuit diagram of a pressure sensor of a stylus provided in an embodiment of the present application;
fig. 8 is a third schematic diagram illustrating a top-view position relationship between a PPG sensor and a pressure sensor of a stylus provided in an embodiment of the present application;
fig. 9 is a fourth schematic structural diagram of a stylus pen provided in the embodiment of the present application;
fig. 10 is a fifth schematic structural diagram of a stylus pen provided in the embodiment of the present application;
fig. 11 is a fourth schematic diagram illustrating a top-view positional relationship between a PPG sensor and a pressure sensor of a stylus provided in an embodiment of the present application;
fig. 12 is a fifth schematic diagram illustrating a top-view positional relationship between a PPG sensor and a pressure sensor of a stylus provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The stylus and the electronic device provided by the embodiments of the present application are described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a possible structure of a stylus pen provided in an embodiment of the present application, and as shown in fig. 1, the stylus pen 10 includes a body 11, a main control circuit 12 disposed in an inner cavity of the body 11, a cap 13 disposed at a first end of the body 11, and a sensor assembly 14 disposed on a first surface of the cap 13.
In the embodiment of the present application, the sensor assembly 14 is used for detecting the blood pressure of the user, and the sensor assembly 14 is connected to the main control circuit 12; the first face of the cap 13 is attached to the skin of the user when the blood pressure of the user is detected.
Optionally, in this embodiment of the application, the body 11 may include a stylus holder and a stylus tip; the shape of the touch pen holder can be any one of the following shapes: cylinder, cuboid, ellipsoid, sphere, irregular solid, etc.
Optionally, in this embodiment of the application, the main control circuit 12 is fixedly connected (for example, adhered) to the inner cavity of the body 11, or the main control circuit 12 may be fixedly connected to the inner cavity of the body 11 through a connecting component.
Optionally, in this embodiment of the application, the first end may specifically be: and the end far away from the touch pen point.
Optionally, in this embodiment of the application, the pen cap 13 may be: the pen cap with the inner cavity is provided with an opening of the inner cavity of the pen cap 13 on a second surface of the pen cap 13, and the second surface is as follows: the shape of the pen cap 13 on the side of the pen cap 13 far away from the first side can be any one of the following: cylinder, cuboid, ellipsoid, sphere, irregular solid, etc.
Optionally, in the embodiment of the present application, the shape of the cap 13 and the shape of the stylus may be the same.
Optionally, in the embodiment of the present application, the cap 13 may be connected to the body 11 in an integrally formed manner, or the cap 13 may be in clearance fit with the first end of the body 11.
Further optionally, in the embodiment of the present application, in the case that the cap 13 is in clearance fit with the first end of the body 11, the second face of the cap 13 may 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 may be inserted into the cap 13 through the opening of the inner cavity of the cap 13; the cap 13 and the body 11 are relatively movable in a radial direction of the body 11.
Optionally, in this embodiment of the application, with reference to fig. 1, as shown in fig. 2, in a case that the cap 13 and the first end are in clearance fit, the stylus 10 further includes: and an elastic member 15.
In the embodiment of the present application, the first end is inserted into the cap 13 through an opening of the inner cavity of the cap 13; a first opening 16 of the inner cavity of the body 11 is arranged on the first end; a fixing part 17 is arranged on the side wall of the inner cavity of the body 11; one end of the elastic component 15 is connected with 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 to be connected with the fixed component 17; the bottom end surface 18 and the first surface 19 are different surfaces of the same end of the pen cap 13.
Further alternatively, in the embodiment of the present application, the elastic member 15 may be any one of: springs, spring plates, elastic telescopic rods, etc.
Exemplarily, in case the elastic member 15 is a spring, the spring may be specifically a coil spring.
Further alternatively, in the embodiment of the present application, the fixing component 17 may be: at least two fixing blocks fixedly connected (e.g., bonded, integrally formed, etc.) with the side wall of the inner cavity of the body 11, or a fixing ring disposed around the side wall of the inner cavity of the body 11.
In the present embodiment, the elastic member 15 is in an elastically deformed state when the blood pressure of the user is detected.
Further optionally, in the embodiment of the present application, in combination with fig. 2, as shown in fig. 3, the stylus pen 10 may further include a sleeve 20. Wherein one end of the sleeve 20 is fixedly connected (e.g., bonded) to the bottom end surface 18 and the other end of the sleeve 20 is disposed through the first opening 16.
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 is understood that the sleeve 20 may protect the flexible circuit board so that the flexible circuit board is not damaged by the elastic member 15.
In the embodiment of the present application, the cap 13 and the first end are relatively movable in the radial direction of the body 11, and the elastic member 15 is disposed between the cap 13 and the body 11, so that when detecting the blood pressure of the user, a predetermined pressing range and pressure feedback can be provided for the skin of the user.
So can know, because cap and first end clearance fit, and be provided with elastomeric element between cap and the body to and, when detecting user's blood pressure, elastomeric element is in elastic deformation state, consequently, can reduce the oppression of first face to user's skin, so, can promote the user in the in-process of detecting user's blood pressure experience.
Optionally, in the embodiment of the present application, the sensor assembly 14 may include at least one of the following: photoplethysmography (PPG) sensors, pressure sensors, and the like. The sensor assembly 14 may be connected to the main control circuit 12 via a Flexible Printed Circuit (FPC).
Optionally, in this embodiment of the application, the main control circuit 12 may be connected to a power supply and provide the power supply for the sensor assembly 14. The main control circuit 12 may be disposed on a Printed Circuit Board (PCB), and the PCB is connected to the flexible circuit board through a connector.
Alternatively, in the embodiment of the present application, when detecting the blood pressure of the user, the user may hold the stylus shaft of the stylus pen 10 and apply the first surface 19 of the cap 13 to the skin of the user, and apply a force to the stylus pen 10 toward the skin of the user, so that the sensor assembly 14 may detect the blood pressure of the user.
Optionally, in a possible implementation manner of the embodiment of the present application, when detecting the blood pressure of the user, the sensor component 14 may be attached to the skin of the user and acquire blood pressure data of the user, so that the sensor component 14 may send the blood pressure data to the main control circuit 12, so that the main control circuit 12 may determine the blood pressure of the user according to the blood pressure data, and thus the main control circuit 12 may send the blood pressure of the user to an electronic device corresponding to the stylus 10 through a wireless network module of the stylus 10, and then the user may view the blood pressure of the user on the electronic device.
Further optionally, in this embodiment of the application, the wireless network module may include at least one of the following: a wireless fidelity (WiFi) module, a bluetooth module, etc.
It should be noted that, for the description of determining the blood pressure of the user according to the blood pressure data, reference may be made to specific descriptions in the related art, and details of the embodiments of the present application are not repeated herein.
Optionally, in another possible implementation manner of the embodiment of the application, when detecting the blood pressure of the user, the sensor component 14 may obtain blood pressure data of the user, and send the blood pressure data to the main control circuit 12, so that the main control circuit 12 may send the blood pressure data to an electronic device corresponding to the stylus 10 through a wireless network module of the stylus 10, so that the electronic device may determine the blood pressure of the user according to the blood pressure data, and then the user may view the blood pressure of the user on the electronic device.
In the embodiment of the present application, since the size of the stylus is small, the user can carry the stylus 10 with him. If the user wants to measure the user's blood pressure a plurality of times within a certain time period, the user can directly attach the first face 19 of the cap 13 of the stylus 10 to the user's skin, so that the sensor assembly 14 can acquire the user's blood pressure data to determine the user's blood pressure.
The touch control pen that this application embodiment provided, the touch control pen includes: the body, set up in this internal master control circuit, set up in the pen cap of the one end of body and set up the sensor subassembly that is used for detecting user's blood pressure on the first face of this pen cap, wherein, this sensor subassembly and master control circuit are connected, and when detecting user's blood pressure, this first face and user's skin laminating. The sensor assembly for detecting the blood pressure of the user is arranged on the pen cap of the body of the touch pen, so that the user can carry the touch pen with him, and when the blood pressure of the user is required to be measured, the first surface of the pen cap is directly attached to the skin of the user, so that the sensor assembly can detect the blood pressure of the user to determine the blood pressure of the user, the user does not need to carry a blood pressure measuring instrument with him, and the blood pressure measuring instrument is used for multiple times by adopting a method in the related technology, so that the convenience of measuring the blood pressure of the user can be improved.
In addition, the embodiment of the application can realize the measurement of the blood pressure of the user on the premise of not adding equipment with additional independent functions of the electronic equipment, so that the cost of measuring the blood pressure of the user through the electronic equipment can be reduced.
The following will exemplify the case where the sensor assembly 14 includes different sensors.
Optionally, in a possible implementation manner of the present application, the sensor assembly 14 includes: PPG sensors and pressure sensors.
Further optionally, in this embodiment of the application, the pressure sensor may specifically be: a capacitive pressure sensor.
It is understood that the capacitive pressure sensor may include: the movable polar plate is arranged on the supporting device, and when the blood pressure of a user is detected, the movable polar plate deforms towards the static polar plate under the action force of the skin of the user, so that the distance between the movable polar plate and the static polar plate can be changed, the capacitance value corresponding to the capacitance pressure sensor can be changed, and the capacitance pressure sensor can acquire pressure data.
In an embodiment of the present application, the blood pressure data may include: pulse wave waveform PPG data and pressure data.
It is understood that the main control circuit 12 (or the electronic device corresponding to the stylus 10) may determine the blood pressure of the user according to the pulse wave waveform PPG data and the pressure data.
It should be noted that, for the description of determining the blood pressure of the user according to the pulse wave waveform PPG data and the pressure data, reference may be made to specific descriptions in the related art, and details of the embodiments of the present application are not repeated herein.
As can be seen, since the sensor component includes the PPG sensor and the pressure sensor, that is, pulse wave waveform PPG data of the user can be obtained by the PPG sensor, and pressure data of the user is obtained by the pressure sensor, it is possible to enable the main control circuit to determine the blood pressure of the user according to the pulse wave waveform PPG data and the pressure data, rather than determining the blood pressure of the user only according to the pulse wave waveform PPG data or the pressure data, and therefore, accuracy of determining the blood pressure of the user can be improved.
In one possible implementation, the PPG sensor includes: a light emitting unit and a light receiving unit; the light emitting unit and the light receiving unit are symmetrically arranged on two sides of the pressure sensor.
It should be noted that, in order to more clearly illustrate the positional relationship between the PPG sensor and the pressure sensor, fig. 4 shows a schematic top-view positional relationship between the PPG sensor and the pressure sensor provided in the embodiment of the present application, and as shown in fig. 4, the PPG sensor includes: the light emitting unit 21, the light receiving unit 22 and the pressure sensor 23 are disposed on the first surface 19, and the light emitting unit 21 and the light receiving unit 22 are symmetrically disposed on two sides of the pressure sensor 23.
Further optionally, in this embodiment of the application, the light emitting unit 21 may specifically be: a light emitting diode; the light receiving unit 22 may specifically be: a photodiode.
It is understood that the light emitting unit 21 may emit light toward the skin of the user, and the light receiving unit 22 may receive reflected light of the light to acquire pulse wave waveform PPG data.
It should be noted that, in order to more clearly illustrate the positional relationship between the PPG sensor and the pressure sensor, fig. 5 illustrates a schematic side-view positional relationship between the PPG sensor and the pressure sensor provided in the embodiment of the present application, and as shown in fig. 5, the PPG sensor includes: light emission unit 21 and light receiving unit 22, this light emission unit 21, light receiving unit 22 and pressure sensor 23 all set up on first face 19, and this pressure sensor 23 includes: the movable polar plate 24, the stationary polar plate 25 and the supporting device 26, the light emitting unit 21 and the light receiving unit 22 are symmetrically disposed at both sides of the pressure sensor 23, so that when detecting the blood pressure of the user, the movable polar plate 24 can be deformed toward the stationary polar plate 25, the light emitting unit 21 can emit light toward the skin of the user, and the light receiving unit 22 can receive the reflected light of the light.
In the embodiment of the present application, the light emitting unit 21 and the light receiving unit 22 are symmetrically disposed on two sides of the pressure sensor 23, on one hand, the pressure sensor 23 can block the light emitted by the light emitting unit 21, so as to prevent the light emitted by the light emitting unit 21 from being directly received by the light receiving unit 22 without being reflected by the skin of the user, thereby preventing signal crosstalk between the light reflecting unit and the light receiving unit, and improving the signal-to-noise ratio of the pulse wave waveform PPG data; on the other hand, pulse wave waveform PPG data and pressure data corresponding to the same part of the skin of the user can be obtained, and the blood pressure of the user can be accurately obtained according to the pulse wave waveform PPG data and the pressure data.
So can know, because light emission unit and the light receiving unit of PPG sensor set up in pressure sensor's both sides symmetrically, consequently, can avoid the signal between light reflection unit and the light receiving unit to crosstalk, and avoid acquireing the pulse wave waveform PPG data and the pressure data that the different positions of user's skin correspond, so, can promote the accuracy of confirming user's blood pressure.
It can be understood that the pressure sensor 23 is disposed between the light emitting unit 21 and the light receiving unit 22, so as to improve the signal quality of the pulse waveform PPG data, and have a symmetrical design.
In another possible implementation, the pressure sensor includes: at least two piezoresistors; wherein the at least two piezoresistors are disposed around the PPG sensor.
Further optionally, in this embodiment of the application, the at least two piezoresistors may specifically be: four piezoresistors. The four piezoresistors are interconnected by a flexible circuit board, which is fixedly connected (e.g., adhesively bonded) to the bottom end face 18, to form a wheatstone bridge pressure sensor. For the description of the wheatstone bridge pressure sensor, reference may be made to specific descriptions in the related art, and details of the embodiments of the present application are not repeated herein.
It should be noted that, in order to more clearly illustrate the positional relationship between the PPG sensor and the pressure sensor, fig. 6 shows a schematic top-view positional relationship between the PPG sensor and the pressure sensor provided in the embodiment of the present application, and as shown in fig. 6, the pressure sensor includes: at least two piezoresistors, e.g. piezoresistor R1A voltage dependent resistor R2A voltage dependent resistor R3And a varistor R4The piezoresistor R1A voltage dependent resistor R2A voltage dependent resistor R3A voltage dependent resistor R4And a PPG sensor 27 are both arranged on the first face 19, and the piezoresistor R1A voltage dependent resistor R2A voltage dependent resistor R3And a varistor R4Arranged around the PPG sensor 27
Fig. 7 shows a circuit diagram of a pressure sensor provided by an embodiment of the present application, as shown in fig. 7,the pressure sensor includes: the voltage dependent resistor R1A voltage dependent resistor R2A voltage dependent resistor R3And a varistor R4The piezoresistor R1First and Vs terminals, a varistor R3Is connected to the first terminal of the varistor R1Second terminal, Vp terminal, and voltage dependent resistor R2Is connected to the first terminal of the varistor R2Second terminal and ground terminal, varistor R4Is connected to the second terminal of the varistor R4First terminal and varistor R3And the second terminal and the Vn terminal of the first diode are connected to form a Wheatstone bridge.
In the embodiment of the application, at least two piezoresistors surround the PPG sensor, so that the detection area of the pressure sensor for detecting the pressure can be increased, and on the other hand, the at least two piezoresistors can be connected in a Wheatstone bridge manner, thereby reducing the influence of common-mode noise on signals and amplifying the voltage change corresponding to the resistance change.
So can know, because two at least piezo-resistors of pressure sensor encircle the PPG sensor setting, consequently, can promote the detection area that pressure sensor detected pressure to can reduce the noise of signal, thereby can promote the degree of accuracy of the pressure data who acquires, so, can promote the accuracy of confirming user's blood pressure.
Optionally, in this embodiment of the application, with reference to fig. 6, as shown in fig. 8, the stylus 10 further includes: a blocking sleeve 28.
In the embodiment of the present application, referring to fig. 8, the blocking sleeve 28 is used for blocking light; the blocking sleeve 28 comprises: a third accommodating space in which the light emitting unit 29 is located, and a fourth accommodating space in which the light receiving unit 30 is located.
Further alternatively, in the embodiment of the present application, the blocking sleeve 28 may be specifically prepared from a light-shielding material (e.g., a silicone material). The blocking sleeve 28 may specifically be any one of: annular blocking sleeves, rectangular blocking sleeves, irregular blocking sleeves and the like.
In the embodiment of the present application, the light emitting unit 29 and the light receiving unit 30 are wrapped by the blocking sleeve 28, so as to avoid the interference of the external environment light, and further avoid the light emitted by the light emitting unit 29 from not being reflected by the skin of the user, and directly received by the light receiving unit 30, so as to avoid the signal crosstalk between the light emitting unit and the light receiving unit, and improve the signal-to-noise ratio of the pulse wave waveform PPG data.
Therefore, the touch control pen further comprises the blocking sleeve used for blocking light, and the light emitting unit and the light receiving unit are both located in different accommodating spaces of the blocking sleeve, so that interference of external environment light can be avoided, signal crosstalk between the light reflecting unit and the light receiving unit can be avoided, and accuracy of determining blood pressure of a user can be improved.
Optionally, in another possible implementation manner of the present application, with reference to fig. 2, as shown in fig. 9, the sensor assembly 14 includes: a PPG sensor; the stylus 10 further includes: a link 31 and a pressure detecting member 32; wherein, one end of the connecting rod 31 is connected with the bottom end surface 18, and the other end of the connecting rod 31 passes through the elastic component 15 to be contacted with the pressure detecting component 32; the pressure detection unit 32 is connected to the main control circuit 12.
Further optionally, in the present embodiment, the above-mentioned link 31 is used for conducting the pressure of the user's skin on the first face 19 of the cap 13.
Specifically, the link 31 may be a hollow link such that one end of a flexible circuit board is connected to the sensor assembly 14 and the other end of the flexible circuit board is connected to the main control circuit 12 through the hollow link.
Further alternatively, in the embodiment of the present application, the pressure detecting component 32 may be: the pressure sensor, alternatively, may include a conductive member (e.g., a support member in the embodiments described below) and a strain gage. Wherein the strain gauge may determine the pressure data based on the amount of deformation of the conductive member.
Alternatively, in the embodiment of the present application, as shown in fig. 10 in combination with fig. 9, the pressure detection unit 32 includes: a support member 33 and a strain gauge 34; wherein the supporting member 33 is connected to the other end of the connecting rod 31; the strain gauge 34 is provided on the support member 33, and the strain gauge 34 is connected to the main control circuit 12.
In the embodiment of the present application, the support member 33 is in a deformed state when the blood pressure of the user is detected.
Further alternatively, in the present embodiment, the supporting member 33 may be specifically made of an elastic material (e.g., rubber, etc.).
It can be understood that when detecting the blood pressure of the user, the skin of the user can apply pressure to the first surface 19 of the pen cap 13, so that the connecting rod 31 can apply force to the supporting member 33 to deform the supporting member 33, and the strain gauge 34 can acquire pressure data.
Therefore, the strain gauge can be arranged on the supporting component, and the supporting component is connected with the other end of the connecting rod, so that the pressure applied to the pen cap can be conducted through the connecting rod, the strain gauge is used for detecting the pressure, and a pressure detecting component does not need to be arranged on the pen cap, so that the design of the flexible circuit board can be simplified, and the cost of the touch pen can be reduced.
In the embodiment of the present application, the sensor component 14 includes a PPG sensor, that is, only the PPG sensor is disposed on the first surface 19 of the pen cap 13, so that the detection area of the PPG sensor for detecting light can be increased, and the signal-to-noise ratio of pulse waveform PPG data can be increased; and the stylus pen 10 further includes the pressure detecting part 32 disposed inside the body 11, so that the design of the flexible circuit board can be simplified.
So can know, owing to be provided with the PPG sensor on the first face of pen cap, and this internal pressure detection part that is provided with, consequently, when can promote the degree of accuracy of the pulse wave waveform PPG data of acquireing, simplify the design of flexible circuit board, so, when can promote the accuracy of confirming user's blood pressure, reduce the cost of touch-control pen.
Optionally, in this embodiment of the application, as shown in fig. 11, the PPG sensor includes: a light emitting unit 35 and at least two light receiving units 36, the light emitting unit 35 and the at least two light receiving units 36 being disposed on the first face 19; wherein, the at least two light receiving units 36 are disposed around the light emitting unit 35.
Further optionally, in this embodiment of the application, the at least two light receiving units 36 may specifically be: and four light receiving units. It can be understood that four light receiving units can realize four-channel PPG pulse wave signal detection to obtain accurate pulse wave waveform PPG data.
Therefore, the at least two pipeline receiving units are arranged around the light emitting unit, so that different light receiving units can receive reflected light rays in different directions, the accuracy of the obtained pulse wave waveform PPG data can be improved, and the accuracy of the blood pressure of the user can be improved.
Optionally, in this embodiment of the application, with reference to fig. 11, as shown in fig. 12, the stylus 10 further includes: a blocking sleeve 37.
In the embodiment of the present application, referring to fig. 12, the blocking sleeve 37 is used for blocking light; the blocking sleeve 37 includes: a first accommodating space in which the light emitting unit 35 is disposed, and at least two second accommodating spaces in which each light receiving unit 36 is disposed.
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 foregoing embodiment, and details of the embodiment of the present application are not repeated herein.
Therefore, the touch control pen further comprises the blocking sleeve used for blocking light, the light emitting unit is located in one containing space of the blocking sleeve, and the different light receiving units are located in different containing spaces of the blocking sleeve, so that the interference of external environment light can be avoided, meanwhile, the signal crosstalk between the light reflecting unit and the light receiving unit can be avoided, and therefore the accuracy of determining the blood pressure of a user can be improved.
Fig. 13 shows a schematic diagram of a possible structure of an electronic device provided in an embodiment of the present application, and as shown in fig. 13, the electronic device 40 includes the stylus 10 according to the embodiment.
In the embodiment of the present application, since the user may often carry the electronic device 40 with him, the electronic device 40 includes the stylus 10, i.e., the user can carry the stylus 10 with him. If the user wants to measure the blood pressure of the user multiple times within a certain time period, the user may directly take the stylus pen 10 out of the electronic device 40, and attach the first surface of the cap of the stylus pen 10 to the skin of the user, so that the sensor component of the stylus pen 10 may acquire the blood pressure data of the user to determine the blood pressure of the user.
According to the electronic equipment provided by the embodiment of the application, the sensor assembly for detecting the blood pressure of the user is arranged on the pen cap of the body of the touch pen of the electronic equipment, so that the user can carry the touch pen, when the blood pressure of the user is required to be measured, the first surface of the pen cap is directly attached to the skin of the user, the sensor assembly can detect the blood pressure of the user to determine the blood pressure of the user, the user does not need to carry a blood pressure measuring instrument, and the blood pressure measuring instrument is used for multiple times by adopting a method in the related art, so that the convenience of measuring the blood pressure of the user can be improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. A stylus, comprising: the pen cap 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 for detecting the blood pressure of a user and is connected with the main control circuit; when the blood pressure of the user is detected, the first face of the pen cap is attached to the skin of the user.
2. The stylus of claim 1, wherein with the cap and the first end clearance fit, the stylus further comprises: an elastic member;
wherein the first end is inserted into the pen cap from an 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; a fixing part is arranged on the side wall of the inner cavity of the body;
one end of the elastic component is connected with the bottom end face of the inner cavity of the pen cap, and the other end of the elastic component penetrates through the first opening to be connected with the fixed component; the bottom end surface and the first surface are different surfaces of the same end of the pen cap;
when the blood pressure of the user is detected, the elastic component is in an elastic deformation state.
3. The stylus of claim 2, wherein the sensor assembly comprises: a photoplethysmography (PPG) sensor; the stylus further includes: a connecting rod and a pressure detecting part;
one end of the connecting rod is connected with the bottom end face, and the other end of the connecting rod penetrates through the elastic component to be in contact with the pressure detection component; the pressure detection part is connected with the main control circuit.
4. The stylus of claim 3, wherein the pressure detection component comprises: a support member and a strain gauge;
wherein the supporting part is connected with the other end of the connecting rod; the strain gauge is arranged on the supporting part and connected with the main control circuit;
the support member is in a deformed state when detecting the blood pressure of the user.
5. The stylus of claim 3, wherein the PPG sensor comprises: the device 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.
6. The stylus of claim 5, further comprising: a blocking sleeve;
the barrier sleeve is used for blocking light; the blocking sleeve comprises: the light emitting unit is arranged in the first accommodating space, and each light receiving unit is arranged in one second accommodating space respectively.
7. The stylus of claim 1 or 2, wherein the sensor assembly comprises: PPG sensors and pressure sensors.
8. The stylus of claim 7, wherein the PPG sensor comprises: a light emitting unit and a light receiving unit;
the light emitting unit and the light receiving unit are symmetrically arranged on two sides of the pressure sensor.
9. The stylus of claim 7, wherein the pressure sensor comprises: at least two piezoresistors;
wherein the at least two piezoresistors are disposed around the PPG sensor.
10. The stylus of claim 9, further comprising: a blocking sleeve;
the barrier sleeve is used for blocking light; the blocking sleeve comprises: the light emitting unit is located in the third accommodating space, and the light receiving unit is located in the fourth accommodating space.
11. An electronic device, characterized in that the electronic device comprises a stylus according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110880788.XA CN113768482A (en) | 2021-08-02 | 2021-08-02 | Touch control pen and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110880788.XA CN113768482A (en) | 2021-08-02 | 2021-08-02 | Touch control pen and electronic equipment |
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| CN113768482A true CN113768482A (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110880788.XA Pending CN113768482A (en) | 2021-08-02 | 2021-08-02 | Touch control pen and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114721469A (en) * | 2022-03-07 | 2022-07-08 | 维沃移动通信有限公司 | Electronic device and physiological parameter detection method |
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| CN210835629U (en) * | 2019-11-29 | 2020-06-23 | 维沃移动通信有限公司 | Wearable device |
| CN213301637U (en) * | 2020-07-29 | 2021-05-28 | 高志博 | Automatic keyboard detection line |
| CN213606307U (en) * | 2020-11-04 | 2021-07-06 | 常州市第二人民医院 | Pain touch pressure quantizer |
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| CN101156772A (en) * | 2007-06-25 | 2008-04-09 | 许建平 | A monitoring method and apparatus for blood pressure |
| CN110013228A (en) * | 2019-05-22 | 2019-07-16 | 中国人民解放军联勤保障部队第九四0医院 | A kind of portable pain sensation measuring pen of Anti-stabbing and its application method |
| CN210835629U (en) * | 2019-11-29 | 2020-06-23 | 维沃移动通信有限公司 | Wearable device |
| CN213301637U (en) * | 2020-07-29 | 2021-05-28 | 高志博 | Automatic keyboard detection line |
| CN213606307U (en) * | 2020-11-04 | 2021-07-06 | 常州市第二人民医院 | Pain touch pressure quantizer |
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