CN217285764U - Blood pressure detection device and electronic equipment - Google Patents
Blood pressure detection device and electronic equipment Download PDFInfo
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- CN217285764U CN217285764U CN202221055328.XU CN202221055328U CN217285764U CN 217285764 U CN217285764 U CN 217285764U CN 202221055328 U CN202221055328 U CN 202221055328U CN 217285764 U CN217285764 U CN 217285764U
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Abstract
The embodiment of the application discloses a blood pressure detection device and electronic equipment. The blood pressure detection device is applied to electronic equipment to detect the blood pressure of a user, and comprises: the gas pressure sensor is used for sensing the change of the gas pressure and generating a gas pressure signal; a photoplethysmography (PPG) sensor to generate a PPG raw signal; the processor is used for acquiring the blood pressure of the user according to the air pressure signal and the PPG original signal; the light-transmitting cover plate is used for receiving pressure applied by a finger of a user; the elastic sheet is used for deforming when the user applies pressure to the finger so as to change the air pressure signal; a circuit board assembly and a bracket assembly; the circuit board assembly, the bracket assembly and the light-transmitting cover plate are sealed to form a first air cavity; the circuit board assembly, the bracket assembly and the elastic sheet are sealed to form a second air cavity; the circuit board assembly is provided with a through hole, and the through hole is used for communicating the gas in the first gas cavity and the gas in the second gas cavity. The blood pressure detection device can improve the convenience and accuracy of blood pressure detection.
Description
Technical Field
The embodiment of the application relates to the technical field of blood pressure detection, in particular to a blood pressure detection device and electronic equipment.
Background
Blood pressure is one of the important parameters for measuring the cardiovascular system of a human body, and plays an important role in diagnosis, treatment and judgment after healing of diseases. Currently, the mature blood pressure detection method in the market is a cuff type detection method based on an auscultation method or an oscillography, wherein the auscultation method needs a more professional operator to perform blood pressure detection based on the sound of the blood flow of the brachial artery, and is more suitable for a medical scene; the oscillography is to inflate the cuff to block the arterial blood flow, then detect the gas pressure in the cuff during the exhaust process and extract the weak pulse wave, and then detect the human blood pressure according to the change of the pulse wave along with the gas pressure in the cuff.
With the improvement of living and medical level, the accuracy of blood pressure detection results and the portability of blood pressure equipment are required to be higher for patients with hypertension. Although the blood pressure equipment adopting the cuff type detection method has accurate detection result, the blood pressure equipment is not easy to carry, is inconvenient to carry out blood pressure detection at any time and any place, and is difficult to meet the requirement of a hypertensive on all-weather blood pressure monitoring.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a blood pressure detection device and electronic equipment to improve the accuracy and convenience of blood pressure detection.
In a first aspect, an embodiment of the present application provides a blood pressure detecting device applied in an electronic device to detect a blood pressure of a user, including: the gas pressure sensor is used for sensing the change of the gas pressure and generating a gas pressure signal; a photoplethysmography (PPG) sensor including a light emitter and a light receiver; the light emitter is used for generating an emission light signal, and the emission light signal is reflected by the finger of the user to form a reflection light signal; the optical receiver is used for receiving the reflected optical signal and generating a PPG original signal; the processor is used for acquiring a pressure detection signal corresponding to the pressure applied by the finger of the user according to the air pressure signal; acquiring a PPG signal corresponding to the pressure detection signal according to the PPG original signal; and obtaining a blood pressure of the user from the pressure detection signal and the PPG signal; the light-transmitting cover plate is used for transmitting the emitted light signal and the reflected light signal and receiving pressure applied by the finger of the user; the elastic sheet is used for deforming when the user finger applies pressure so as to change the air pressure signal; a circuit board assembly to transmit the barometric pressure signal and the PPG raw signal to the processor; the first surface of the circuit board assembly faces the light-transmitting cover plate, and the second surface of the circuit board assembly faces the elastic sheet; the bracket component is used for providing support between the light-transmitting cover plate and the circuit board component and providing support between the elastic sheet and the circuit board component; the circuit board assembly, the bracket assembly and the light-transmitting cover plate are sealed to form a first air cavity; the circuit board assembly, the bracket assembly and the elastic sheet are sealed to form a second air cavity; the circuit board assembly is provided with a through hole, and the through hole is used for communicating the gas in the first gas cavity with the gas in the second gas cavity.
The blood pressure detection device that this application embodiment provided adopts gas pressure sensor and air cavity structure to form pressure detection system and detects the pressure that the user's finger applyed on blood pressure detection device, combines the PPG sensor to detect the PPG signal that corresponds with the pressure that the user's finger applyed to the detection of pressure and PPG signal's detection has better synchronism, can acquire user's blood pressure more accurately. The blood pressure detection device that this application embodiment provided occupation space is less, can assemble in various mobile terminal or wearable equipment, and the pressure detection precision is higher, can reach within 3g, can satisfy the requirement of user to blood pressure detection's the degree of accuracy and convenience.
Optionally, the blood pressure detecting device further comprises: an elastic reinforcing plate; the elastic reinforcing plate is attached to the elastic sheet; the elastic reinforcing plate is used for enabling the elastic sheet to deform along the direction close to the user finger when the user finger applies pressure so as to increase the air pressure in the first air cavity and the second air cavity; and when the pressure is relieved by the fingers of the user, the elastic sheet is deformed along the direction far away from the fingers of the user so as to reduce the air pressure in the first air cavity and the second air cavity.
Optionally, the bracket assembly comprises: a first bracket and a second bracket; the first support is used for providing support between the light-transmitting cover plate and the circuit board assembly and is sealed with the light-transmitting cover plate and the circuit board assembly to form the first air cavity; the second support is used for providing support between the elastic sheet and the circuit board assembly and is sealed with the elastic sheet and the circuit board assembly to form the second air cavity.
Optionally, the gas pressure sensor and the PPG sensor are disposed within the first gas cavity and at a first surface of the circuit board assembly.
Optionally, the processor is disposed in the second air cavity and disposed on a second surface of the circuit board assembly.
Optionally, the blood pressure detecting device further comprises: a first protective stop; the first protection block is arranged on the second surface of the circuit board assembly and used for protecting the processor when the user finger applies pressure.
Optionally, the processor is disposed outside the blood pressure detection device and on the circuit board assembly.
In a second aspect, an embodiment of the present application provides an electronic device, including the blood pressure detection apparatus according to the first aspect or any optional manner of the first aspect; the blood pressure detection device is arranged on a middle frame of the electronic equipment.
The electronic equipment provided by the embodiment of the application integrates the blood pressure detection device provided by the first aspect, and does not need additional blood pressure detection equipment, so that a user can conveniently and accurately detect the blood pressure by using the electronic equipment.
Optionally, the electronic device further comprises: the fixed cover plate is fixed on a middle frame of the electronic equipment; the fixed cover plate is used for providing support for the blood pressure detection device.
Optionally, the fixed cover plate comprises a support boss; the supporting boss is used for enabling the elastic sheet to deform when the user applies pressure to the finger.
Optionally, the fixed cover plate includes second protection stoppers disposed on two sides of the support boss, and configured to protect the blood pressure detection device when the user applies pressure to the finger.
Optionally, the blood pressure detecting device is integrated on a side key of the electronic device.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which are not to be construed as limiting the embodiments, in which elements having the same reference numerals are identified as identical or similar elements, and in which the drawings are not to be construed as limited, unless expressly stated to the scale.
Fig. 1 is a schematic structural diagram of a blood pressure detecting device according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another blood pressure detecting device provided in the embodiment of the present application when no pressure is applied by the user;
FIG. 3 is a schematic view of the blood pressure monitor shown in FIG. 2 when a user applies pressure;
fig. 4 is a schematic perspective view of a blood pressure detecting device with a processor disposed inside according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of another blood pressure detecting device provided in the embodiment of the present application;
fig. 6 is a schematic structural diagram of another blood pressure detecting device provided in the embodiment of the present application;
fig. 7 is a schematic perspective view of a blood pressure detecting device with a processor disposed outside according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Furthermore, the terms "first," "second," and the like, are used solely to distinguish between similar objects and are not intended to indicate or imply relative importance or to implicitly indicate a number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
At present, the detection of blood pressure in human body is generally based on pulse wave characteristic parameters of brachial artery and radial artery. In fact, the pulse wave at the finger tip of the human body has better similarity with the pulse waves of the brachial artery and the radial artery, is easier to measure, and can be applied to the calculation of various cardiovascular physiological parameters.
The traditional finger tip sphygmomanometer is special equipment for detecting the blood pressure of a human finger tip, and is characterized in that a finger is clamped by an upper component and a lower component, a spring structure is used for applying pressure to the finger tip, and then the blood pressure of the human finger tip is detected through an internal pressure sensor. Although the finger tip sphygmomanometer is small in appearance, the accuracy of the pressure sensor inside the finger tip sphygmomanometer is not high, and the blood pressure detection result is not accurate enough. In addition, the special equipment for blood pressure detection can be used only by daily carrying of a user, inconvenience is brought to the user, the price is high, and high use cost is caused.
The embodiment of the application provides a blood pressure detection device, can integrate in mobile terminal or wearable equipment such as smart mobile phone, wrist-watch, bracelet, panel computer or notebook computer to satisfy the requirement of user to blood pressure detection's degree of accuracy and portability.
Fig. 1 is a schematic structural diagram of a blood pressure detecting device according to an embodiment of the present application. The blood pressure detection device is used for detecting the blood pressure of a user, and comprises: a gas pressure sensor 10 for sensing a change in gas pressure and generating a gas pressure signal; a photoplethysmography (PPG) sensor 20, including a light emitter 201 and a light receiver 202, wherein the light emitter 201 is configured to generate a light emitting signal, the light emitting signal is reflected by a finger of a user to form a reflected light signal, and the light receiver 202 is configured to receive the reflected light signal and generate a raw PPG signal; a processor 30, configured to obtain a pressure detection signal corresponding to the pressure applied by the finger of the user according to the barometric pressure signal generated by the gas pressure sensor 10, obtain a PPG signal corresponding to the pressure detection signal according to the PPG raw signal generated by the optical receiver 20, and obtain the blood pressure of the user according to the pressure detection signal and the PPG signal; a light-transmitting cover 40 for transmitting the emitted light signal generated by the light emitter 201 and the reflected light signal formed by the reflected light signal through the finger of the user, and receiving the pressure applied by the finger of the user; the elastic sheet 50 is used for deforming when the finger of the user applies pressure so as to change the air pressure signal; a circuit board assembly 60 for transmitting the air pressure signal and the PPG raw signal to the processor 30, wherein a first surface of the circuit board assembly 60 faces the light-transmissive cover plate 40, and a second surface of the circuit board assembly 60 faces the elastic sheet 50; the bracket assembly 70 is used for providing support between the transparent cover plate 40 and the circuit board assembly 60, and providing support between the elastic sheet 50 and the circuit board assembly 60. Wherein, the circuit board assembly 60, the bracket assembly 70 and the transparent cover plate 40 are sealed to form a first air cavity 801; the circuit board assembly 60, the bracket assembly 70 and the spring plate 50 are sealed to form a second air cavity 802; the circuit board assembly 60 is provided with a through hole 803, and the through hole 803 is used for communicating the gas in the first gas cavity 801 with the gas in the second gas cavity 802.
The blood pressure detection device that this application embodiment provided adopts gas pressure sensor and air cavity structure to form pressure detection system and detects the pressure that the user pointed to and applys on blood pressure detection device, combines the PPG sensor to detect the PPG signal that corresponds with the pressure that the user pointed to the detection of pressure and PPG signal has better synchronism, can acquire user's blood pressure more accurately. The blood pressure detection device provided by the embodiment of the application occupies a small space, can be assembled in various mobile terminals or wearable devices, has higher pressure detection precision, can reach within +/-3 g, and can meet the requirements of users on the accuracy and convenience of blood pressure detection.
Specifically, the gas pressure sensor 10 may convert the sensed variation in gas pressure into an electrical signal to be output, thereby generating a gas pressure signal. The gas pressure sensor has the advantages of stable performance, accurate pressure detection and lower cost.
The PPG sensor 20 includes a Light emitter 201 and a Light receiver 202, wherein the Light emitter 201 may be specifically a Light Emitting element such as a Light Emitting Diode (LED), an organic Light Emitting Diode, a phosphor, etc., and is capable of Emitting one or more combinations of visible Light (such as green Light or red Light) and infrared Light of a specific wavelength as an emitted Light signal to a user's finger; the optical receiver 202 may be specifically a photoelectric conversion element such as a Photodiode (PD), a phototransistor, an avalanche photodiode, or a photomultiplier, and is capable of receiving a reflected light signal formed by the reflected light signal reflected by a finger of a user, and performing photoelectric conversion on the reflected light signal to generate a PPG original signal.
The number of the light emitters or the light receivers may be one or multiple, and the number of the light emitters and the number of the light receivers in the PPG sensor are not limited in the embodiment of the present application. Preferably, a light blocking element may be disposed between the light emitter and the light receiver to avoid that the emitted light signal generated by the light emitter is directly transmitted to the light receiver without being reflected by the finger of the user, resulting in a large noise in the PPG signal.
The processor 30 may adopt a signal processing module separately set for the blood pressure detecting device, or may multiplex a signal processing module in an electronic device (such as a mobile phone, a watch, or a bracelet, etc.). The processor 30 may be disposed inside the blood pressure monitor, or may be disposed outside the blood pressure monitor. The processor 30 may be embodied as, and not limited to, a general purpose processor (e.g., a microprocessor), a digital signal processor, an application specific integrated circuit, a transistor logic device, a field programmable gate array, or other programmable logic device.
The processor may process the air pressure signal generated by the air pressure sensor by using a pre-stored algorithm module, so as to obtain a pressure detection signal corresponding to the pressure applied by the finger of the user.
The processor may also process the PPG raw signal, for example, the received PPG raw signal may be converted from a current signal to a voltage signal, and the voltage signal is amplified and filtered to filter out a direct current component therein, that is, a signal component not containing pulse wave information, and simultaneously an alternating current component containing pulse wave information of the user is retained, and the PPG signal is finally generated.
The processor may acquire a blood pressure signal based on the pressure detection signal and the PPG signal, the blood pressure signal being capable of reflecting a current blood pressure value of the user, e.g. the processor may generate a pressure curve based on the pressure detection signal, the pressure curve being a variation of the pressure exerted by the user over time, and a pulse wave curve based on the PPG signal, the pulse wave curve being a variation of the magnitude of the PPG signal over time. The pressure curve and the pulse wave curve may be generated simultaneously; wherein, the horizontal axis of the pulse wave curve can be represented as time, and the vertical axis can be represented as the amplitude of the PPG signal; the horizontal axis of the pressure curve may be expressed in time and the vertical axis may be expressed in the amount of pressure applied by the user; then, fitting a relation curve between the amplitude of the PPG signal and a pressure value applied by the user by adopting a polynomial, a single-Gaussian or double-Gaussian algorithm, and calculating to obtain the blood pressure of the user based on the relation curve between the amplitude of the PPG signal and the pressure value applied by the user and the generated blood pressure calculation model; the blood pressure calculation model may be generated by machine learning training data, which may include pulse wave curve data, pressure curve data, and blood pressure data corresponding to the pulse wave curve data and the pressure curve data.
The light-transmissive cover sheet 40 may transmit both emitted and reflected light signals, and in particular, may transmit visible light (e.g., green or red) and/or infrared light. The transparent cover 40 may be made of a transparent material, such as a glass cover, or may be made of a non-transparent material, which is not limited in the embodiments of the present application. When a user uses the blood pressure detection device provided by the embodiment of the application to detect blood pressure, the user can place fingers on the light-transmitting cover plate 40 and apply pressure to the blood pressure detection device through the light-transmitting cover plate 40.
The elastic sheet 50 is a sheet capable of generating elastic deformation, and specifically, an elastic sheet made of a silicone material may be used.
The Circuit Board assembly 60 includes a hard Circuit Board or a Flexible-rigid Board, such as a PCB (Printed Circuit Board), and may further include an FPC (Flexible Printed Circuit).
The bracket assembly 70 may provide support between the transparent cover plate 40 and the circuit board assembly 60, and between the elastic sheet 50 and the circuit board assembly 60, and respectively form a first air cavity 801 and a second air cavity 802 in a sealing manner. Specifically, the gas filled in the first air cavity 801 and the second air cavity 802 may be air, but is not limited thereto.
As a possible implementation, as shown in fig. 2, the blood pressure detecting device further includes: an elastic reinforcing plate 90; the elastic reinforcing plate 90 is attached to the elastic sheet 50. The elastic reinforcing plate 90 can deform the elastic sheet 50 in a direction close to the user's finger when the user's finger applies pressure, so as to increase the air pressure in the first air cavity 801 and the second air cavity 802; and deforming the resilient piece 50 in a direction away from the user's finger when the user's finger relieves pressure to reduce the air pressure in the first air chamber 801 and the second air chamber 802.
In this embodiment, the elastic sheet is driven to deform by the elastic reinforcing plate, so that the air pressure in the first air cavity and the air pressure in the second air cavity are correspondingly increased or decreased along with the application or unloading of the pressure by the user. The elastic reinforcing plate can support the elastic sheet, the deformation of the elastic sheet is that part of the surface of the elastic sheet moves smoothly relatively, and then the gas pressure in the gas cavity can change uniformly and linearly, so that the calculation process of acquiring the pressure applied by a user by utilizing a gas pressure signal is simpler, and the result is more accurate.
Specifically, the elastic reinforcing plate may be attached to a surface of one side of the elastic sheet facing the outside of the blood pressure detection device, and a surface area of the elastic reinforcing plate is smaller than a surface area of the elastic sheet. The elastic reinforcing plate can be a metal sheet; preferably, the elastic reinforcement plate may be a stainless steel sheet.
Fig. 2 is a schematic structural view of the blood pressure monitor of the present embodiment when the user does not apply pressure, and fig. 3 is a schematic structural view of the blood pressure monitor of the present embodiment when the user applies pressure. The finger tip blood pressure detection principle of the blood pressure detection device provided by the embodiment of the present application is described below with reference to fig. 2 and 3.
When a user uses the blood pressure detection device provided by the embodiment of the application to detect blood pressure, firstly, fingers are placed on the light-transmitting cover plate 40, and pressure is applied; preferably, the user may be prompted to gradually increase or gradually decrease the applied pressure, which is not limited in this embodiment of the present application. For convenience of description, the following description will be given taking an example in which the user gradually increases the applied pressure.
In the process that the pressure of the user is gradually increased, the light emitter 201 transmits a transmission light signal to the finger of the user, the transmission light signal passes through the light-transmitting cover plate 40 and is reflected by the finger of the user to form a reflection light signal, the reflection light signal passes through the light-transmitting cover plate 40 and is received by the light receiver 202, the light receiver 202 converts the received reflection light signal into a PPG original signal, the PPG original signal is transmitted to the processor 30 through the circuit board assembly 60, and the processor 30 processes the PPG original signal and obtains a PPG signal capable of containing pulse wave information of the finger tip of the user; meanwhile, in the process of gradually increasing the pressure of the user, the elastic reinforcing plate 90 drives the elastic sheet 50 to deform along the direction close to the finger of the user, so as to compress the gas in the second air cavity 802, so that the gas in the second air cavity 802 flows into the first air cavity 801 through the through hole 803, thereby increasing the air pressure in the first air cavity 801, the gas pressure sensor 10 senses the change of the air pressure and generates a corresponding air pressure signal, the air pressure signal is transmitted to the processor 30 through the circuit board assembly 60, and the processor 30 processes the air pressure signal and obtains a pressure detection signal corresponding to the pressure applied by the user. Finally, the processor 30 calculates the finger tip blood pressure of the user according to the PPG signal and the pressure detection signal.
When the user finishes blood pressure detection and unloads the applied pressure, the elastic reinforcing plate 90 drives the elastic sheet 50 to deform along the direction away from the finger of the user, so that the elastic sheet 50 is restored to the state when the elastic sheet is not deformed, the gas in the first air cavity 801 flows into the second air cavity 802 through the through hole 803, and then the air pressure in the first air cavity 801 is reduced until the air pressure when the user does not apply pressure is restored.
By adopting the principle, the blood pressure detection device provided by the embodiment of the application can accurately acquire the pressure applied by the user to the blood pressure detection device, so that the accuracy of blood pressure detection is improved; in addition, the performance of the gas pressure sensor is more stable and has lower cost compared with a strain gauge type pressure sensor.
As a possible embodiment, the circuit board assembly 60 includes: a PCB 601 and an FPC 602. The gas pressure sensor 10, the optical transmitter 201 and the optical receiver 202 may be fixed on the PCB 601 by metal patches or gold soldering wires, and the gas pressure signal generated by the gas pressure sensor 10 and the PPG raw signal generated by the optical receiver 202 may be transmitted to the processor 30 through the PCB 601; the interior of the blood pressure detection device can be divided into a first air cavity 801 and a second air cavity 802 by the PCB 601, and the PCB 601 is provided with a through hole 803 so that the air in the first air cavity 801 can be communicated with the air in the second air cavity 802, that is, the air pressure in the first air cavity 801 is consistent with the air pressure in the second air cavity 802. The FPC 602 may be connected to one end of the PCB 601, and connect the blood pressure detecting device to a main board of the electronic apparatus, so as to transmit a blood pressure signal detected by the blood pressure detecting device to the electronic apparatus, and perform operations such as communication, data exchange, or data analysis with a main chip of the electronic apparatus.
As a possible embodiment, as shown in fig. 2 and 3, the rack assembly 70 includes a first rack 701 and a second rack 702; the first bracket 701 is used for providing support between the light-transmitting cover plate 40 and the circuit board assembly 60, and is sealed with the light-transmitting cover plate 40 and the circuit board assembly 60 to form a first air cavity 801; the second bracket 703 may provide support between the spring plate 50 and the circuit board assembly 60, and may seal the spring plate 50 and the circuit board assembly 60 into the second air cavity 802.
Specifically, the first support 701 may be a Ring structure, and surrounds the periphery of the light-transmissive cover plate 40. The first bracket 701 may be fixed to the circuit board assembly 60 by means of dispensing, and the transparent cover plate 40 may also be fixed to the outer end of the first bracket 701 by means of dispensing. Preferably, the first bracket 701 and the light-transmitting cover plate may adopt a waist-round or round structure, so as to be adapted to the shape of a key of an electronic device such as a mobile phone or a watch, and the blood pressure detection device may be better integrated in the key of the electronic device. The blood pressure detection device can be arranged in the shell of the electronic equipment, only the light-transmitting cover plate is exposed out of the surface of the keys of the electronic equipment, and a user can realize the blood pressure detection function through the keys of the electronic equipment and is positioned on the side surface of the electronic equipment.
The first bracket 701 and the second bracket 702 may be integrated or separated, which is not limited in this embodiment of the present application.
As a possible implementation, the gas pressure sensor 10 and the PPG sensor 20 are arranged within the first gas cavity 801 and on a first surface of the circuit board assembly 60.
The PPG sensor is arranged on the first surface, facing the first air cavity, of the circuit board assembly, so that blocking of other components in the blood pressure detection device on emitted light signals and reflected light signals required by PPG signal detection can be reduced, and the accuracy of PPG signal detection is improved; simultaneously, set up gas pressure sensor in the first surface of the first air cavity of orientation of circuit board subassembly for the atmospheric pressure change that gas pressure sensor sensing arrived is the produced linkage change of the gas circulation between first air cavity and the second air cavity, thereby has improved the stability and the reliability of pressure measurement result.
As a possible embodiment, the processor 30 is disposed in the second air cavity 802 and disposed on the second surface of the circuit board assembly 60.
The processor is arranged on the second surface, facing the second air cavity, of the circuit board assembly, the internal space of the blood pressure detection device can be fully utilized, the miniaturization of the blood pressure detection device is facilitated, and the occupation of the internal space of the electronic equipment is reduced.
Fig. 4 is a schematic perspective view of a blood pressure detecting device with a processor disposed inside according to an embodiment of the present application. The light-transmissive cover 40 is exposed to the electronic device to receive pressure applied by a user's finger and transmits the emitted light signal and the reflected light signal for PPG signal detection. The first bracket 701, the transparent cover plate 40 and the PCB 601 are sealed to form a first air cavity, and the second bracket 702, the elastic sheet 50 and the PCB 601 are sealed to form a second air cavity. The FPC 602 is connected to one end of the PCB 601 for signal transmission between the blood pressure detection apparatus and the electronic device.
In addition, the blood pressure detecting device may further include a peripheral device such as a Memory (e.g., an EPROM (Erasable Programmable Read-Only Memory)) or an impedance matching element (e.g., a resistive device), and the peripheral device may also be disposed on the second surface of the circuit board assembly to reduce an occupied space of the blood pressure detecting device inside the electronic device, and the peripheral device may be packaged inside the blood pressure detecting device by the second bracket, so that the peripheral device may be better protected.
As a possible embodiment, as shown in fig. 5, the blood pressure detecting device further includes: the first protective stop 1001. A first protective stop 1001 is provided on the second surface of the circuit board assembly 60 for protecting the processor 30 when pressure is applied by a user's finger.
Through setting up first protection dog at circuit board subassembly's second surface, can prevent to press to lead to blood pressure test device serious deformation because of user's energetically to cause external force to strike to treater and/or other electronic device that set up in circuit board subassembly's second surface, and then lead to the device to damage.
As a possible implementation, as shown in fig. 6, the processor 30 is disposed outside the blood pressure detecting device and on the circuit board assembly 60.
Specifically, as shown in fig. 7, the processor 30 may be provided on the FPC 602, and peripheral devices such as a memory or an impedance matching element may also be provided on the FPC 602. The bottom of the FPC 602 may be attached with an FPC stiffener.
The processor 30 is arranged outside the blood pressure detection device, the height of the second air cavity can be reduced, the blood pressure detection device is light and thin, the PCB 601 only needs to adopt a structure of single-side signal transmission, and the cost is relatively low.
Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 100 comprises the blood pressure detection device according to the above-mentioned embodiment or any implementation mode, and the blood pressure detection device is disposed on the middle frame 1010 of the electronic device 100.
Examples of electronic devices include, but are not limited to, mobile devices or wearable devices such as smartphones, watches, or bracelets. The blood pressure detection device can be integrated with the side keys of the electronic equipment and fixed on the middle frame of the electronic equipment, no extra space is occupied, and the side position of the electronic equipment is convenient for a user to perform finger tip blood pressure detection operation.
As a possible implementation, the electronic device 100 further includes a fixing cover 1020, where the fixing cover 1020 is fixed to the middle frame 1010 of the electronic device 100; the fixed cover 1020 is used to provide support for the blood pressure monitor.
Utilize fixed apron to provide the support for blood pressure check device, can increase overall structure's stability to improve blood pressure check result's reliability.
As a possible embodiment, the fixing cover 1020 includes a supporting boss 1021, and the supporting boss 1021 is used for deforming the elastic sheet when the user applies pressure with the finger.
In the process that the user carries out blood pressure check, the user utilizes the directional blood pressure check device of hand to exert pressure, presses the direction removal of blood pressure check device along being close to fixed apron, and shell fragment (and elasticity stiffening plate) can be along the direction deformation near the user's finger under the supporting role of support boss to change the atmospheric pressure signal that gas pressure sensor sensing arrived.
As a possible embodiment, the fixing cover 1020 includes second protection stoppers 1022, and the second protection stoppers 1022 are disposed at both sides of the support boss 1021 for protecting the blood pressure detecting device when the user's finger applies pressure.
The second protection stop block can limit the deformation amount of the elastic sheet (and the elastic reinforcing plate), and prevent the blood pressure detection device from being seriously deformed and damaging internal devices due to the strong pressing of a user.
As a possible implementation, the electronic device 100 further comprises a waterproof component for preventing water or moisture from entering the interior of the electronic device 100 or the blood pressure detection apparatus.
Specifically, a waterproof silicone ring can be arranged around the middle frame and/or the fixed cover plate of the electronic device to realize the waterproof function of the electronic device or the blood pressure detection device.
It should be noted that, without conflict, each embodiment and/or technical features in each embodiment described in the present application may be arbitrarily combined with each other, and the technical solutions obtained after the combination also fall within the protection scope of the present application.
While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A blood pressure detection device applied to an electronic device for detecting blood pressure of a user, comprising:
the gas pressure sensor is used for sensing the change of the gas pressure and generating a gas pressure signal;
a photoplethysmography (PPG) sensor including a light emitter and a light receiver; the optical emitter is used for generating an emission optical signal which is reflected by a finger of a user to form a reflection optical signal; the optical receiver is used for receiving the reflected optical signal and generating a PPG original signal;
the processor is used for acquiring a pressure detection signal corresponding to the pressure applied by the finger of the user according to the air pressure signal; acquiring a PPG signal corresponding to the pressure detection signal according to the PPG original signal; and obtaining the blood pressure of the user from the pressure detection signal and the PPG signal;
the light-transmitting cover plate is used for transmitting the emitted light signal and the reflected light signal and receiving pressure applied by the finger of the user;
the elastic sheet is used for deforming when the user finger applies pressure so as to change the air pressure signal;
a circuit board assembly to transmit the barometric pressure signal and the PPG raw signal to the processor; the first surface of the circuit board assembly faces the light-transmitting cover plate, and the second surface of the circuit board assembly faces the elastic sheet;
the bracket component is used for providing support between the light-transmitting cover plate and the circuit board component and providing support between the elastic sheet and the circuit board component;
the circuit board assembly, the bracket assembly and the light-transmitting cover plate are sealed to form a first air cavity; the circuit board assembly, the bracket assembly and the elastic sheet are sealed to form a second air cavity; the circuit board assembly is provided with a through hole, and the through hole is used for communicating the gas in the first gas cavity with the gas in the second gas cavity.
2. The blood pressure detection device according to claim 1, further comprising: an elastic reinforcing plate; the elastic reinforcing plate is attached to the elastic sheet;
the elastic reinforcing plate is used for enabling the elastic sheet to deform along the direction close to the user finger when the user finger applies pressure so as to increase the air pressure in the first air cavity and the second air cavity; and when the pressure of the user finger is relieved, the elastic sheet deforms along the direction far away from the user finger so as to reduce the air pressure in the first air cavity and the second air cavity.
3. The blood pressure monitor device of claim 1, wherein said stand assembly comprises: a first bracket and a second bracket;
the first support is used for providing support between the light-transmitting cover plate and the circuit board assembly and is sealed with the light-transmitting cover plate and the circuit board assembly to form the first air cavity;
the second support is used for providing support between the elastic sheet and the circuit board assembly and is sealed with the elastic sheet and the circuit board assembly to form the second air cavity.
4. A blood pressure detection device according to any of claims 1 to 3, wherein the gas pressure sensor and the PPG sensor are disposed within the first air chamber and at a first surface of the circuit board assembly.
5. The blood pressure sensing device of claim 4, wherein the processor is disposed within the second air chamber and on a second surface of the circuit board assembly.
6. The blood pressure monitor according to claim 5, further comprising: a first protective stop; the first protection block is arranged on the second surface of the circuit board assembly and used for protecting the processor when the user finger applies pressure.
7. The blood pressure monitor device of claim 4, wherein the processor is disposed external to the blood pressure monitor device and on a circuit board assembly.
8. An electronic device characterized by comprising the blood pressure detection apparatus according to any one of claims 1 to 7; the blood pressure detection device is arranged on a middle frame of the electronic equipment.
9. The electronic device of claim 8, further comprising: the fixed cover plate is fixed on a middle frame of the electronic equipment;
the fixed cover plate is used for providing support for the blood pressure detection device.
10. The electronic device of claim 9, wherein the stationary cover plate comprises a support boss; the supporting boss is used for enabling the elastic sheet to deform when a user applies pressure to the finger.
11. The electronic device of claim 10, wherein the fixed cover plate comprises second protective stops disposed on both sides of the support boss for protecting the blood pressure detection device when pressure is applied by the user's finger.
12. The electronic device of any one of claims 8 to 11, wherein the blood pressure detection device is integrated with a side key of the electronic device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221055328.XU CN217285764U (en) | 2022-04-29 | 2022-04-29 | Blood pressure detection device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221055328.XU CN217285764U (en) | 2022-04-29 | 2022-04-29 | Blood pressure detection device and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055198A1 (en) * | 2022-09-14 | 2024-03-21 | 深圳市韶音科技有限公司 | Touch-control sensing device, sensing device for recognizing gestures of user, and electronic device and physiological-signal detection device |
| WO2024087213A1 (en) * | 2022-10-28 | 2024-05-02 | 深圳市韶音科技有限公司 | Sensing apparatus |
-
2022
- 2022-04-29 CN CN202221055328.XU patent/CN217285764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055198A1 (en) * | 2022-09-14 | 2024-03-21 | 深圳市韶音科技有限公司 | Touch-control sensing device, sensing device for recognizing gestures of user, and electronic device and physiological-signal detection device |
| WO2024087213A1 (en) * | 2022-10-28 | 2024-05-02 | 深圳市韶音科技有限公司 | Sensing apparatus |
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