CN215651063U - Detection device for biological characteristic information and electronic equipment - Google Patents

Abstract

A biological characteristic information detection device and an electronic device are provided, wherein the biological characteristic information obtained by detection has higher accuracy and is convenient to carry. This detection device is applied to the electronic equipment including first button, is provided with the cavity in the casing of this first button, and detection device includes: a first detection part including: the first pulse wave detection module is at least partially arranged in the cavity of the first key and is used for detecting a first pulse wave signal of the user when the user presses the first key; the pressure sensing module is at least partially arranged in the cavity of the first key and is used for detecting a pressure signal applied to the first key by a user, and the first pulse wave signal is a corresponding pulse wave signal when the pressure signal is applied by the user; the pressure signal and the first pulse wave signal are used for detecting first biological characteristic information of the user.

Description

Detection device for biological characteristic information and electronic equipment

The present application is a divisional application of the utility model entitled "detecting device and electronic device for biometric information" having an application date of 9/12/2020 and an application number of 202022935429.3.

Technical Field

The present application relates to the field of electronic technology, and more particularly, to a biometric information detection apparatus and an electronic device.

Background

In recent years, with the rapid development of electronic technology, people pay attention to how to monitor the biological characteristic information of a human body in real time so that a user can know the physical state of the user at any time to prevent diseases.

For example, blood pressure is important in disease diagnosis, treatment and prognosis as a measure of the biological characteristics of the cardiovascular system of the human body. At present, in portable blood pressure detection devices on the market, the blood pressure value is generally determined based on the detection of pulse waves, but the detection of the pulse waves is limited by various environmental factors, and the measurement accuracy is poor.

Therefore, the biological characteristic information detection device which is convenient to carry and has high accuracy is provided, and the biological characteristic information detection device has a great application prospect and market value.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a detection device and electronic equipment for biological characteristic information, and the biological characteristic information obtained by detection has higher accuracy and is convenient to carry.

In a first aspect, a device for detecting biometric information is provided, which is applied to an electronic device, the electronic device includes a first key, a cavity is disposed in a housing of the first key, and the device includes: a first detection component, the first detection component comprising: the first pulse wave detection module is at least partially arranged in the cavity of the first key and is used for detecting a first pulse wave signal of a user when the user presses the first key; the pressure sensing module is at least partially arranged in the cavity of the first key and is used for detecting a pressure signal applied to the first key by the user, and the first pulse wave signal is a corresponding pulse wave signal when the pressure signal is applied by the user; the pressure signal and the first pulse wave signal are used for detecting first biological characteristic information of the user.

Through the technical scheme of this application embodiment, first pulse wave detection module is used for detecting the first pulse wave signal when the user presses, this first pulse wave signal is the pulse wave signal under the pressure signal that corresponds to the user and presses, meanwhile, pressure sensing module is used for detecting the pressure signal that this user pressed, combine pressure signal and first pulse wave signal to carry out biological characteristic information detection, compare in prior art directly detect the pulse wave signal detection biological characteristic information under the no pressure effect, and need carry out the scheme of calibration with the help of the assistance of external equipment such as sphygmomanometer, can directly measure comparatively accurate biological characteristic information according to detection device itself, therefore have the degree of accuracy that higher biological characteristic information detected, and portable. Furthermore, in the embodiment of the application, the first pulse wave detection module and the pressure sensing module in the first detection component are at least partially arranged in the cavity of the first key of the electronic device, so that a user can quickly find the operation part where the first detection component is located, the user can conveniently press the key, the user experience is improved, the size of the electronic device can be reduced, and the appearance of the electronic device is not affected.

In some possible embodiments, the pressure sensing module is stacked with the first pulse wave detection module, and the pressure sensing module is located on a side of the first pulse wave detection module facing the inside of the electronic device.

In some possible embodiments, the first pulse wave detecting module is fixedly connected to the housing of the first button, and the pressure sensing module is fixedly connected to the first pulse wave detecting module, and the first detecting component further includes: the first structural component is arranged on one side of the pressure sensing module facing the interior of the electronic equipment; when the user presses the first key, the pressure sensing module and the first pulse wave detection module are linked and pressed on the first structural member; the pressure sensing module is used for detecting the acting force between the pressure sensing module and the first structural member so as to detect the pressure signal when the user applies the first key.

In some possible embodiments, the first detection component further comprises: the elastic module is arranged on one side of the first structural component facing the interior of the electronic equipment and is connected with the first structural component; when the user presses the first key, the first structural component, the pressure sensing module and the first pulse wave detection module are linked together to press the elastic module; the elastic module is used for limiting the movable distance of the pressure sensing module within a preset range so as to limit the force applied by the user within a pressure range which can be borne by the pressure sensing module.

In some possible embodiments, the elastic module is configured to reuse an elastic structure of the first key, and the elastic structure of the first key is configured to limit a pressing stroke of the first key.

In some possible embodiments, the first pulse wave detecting module is fixedly connected to the housing of the first button, and the pressure sensing module is detachably disposed at one side of the first pulse wave detecting module, and the first detecting component further includes: the second structural part is fixedly connected to one side, facing the inside of the electronic equipment, of the first pulse wave detection module; when a user presses the first key, the second structural part and the first pulse wave detection module are linked and pressed on the pressure sensing module; the pressure sensing module is used for detecting acting force between the pressure sensing module and the second structural member so as to detect the pressure signal.

In some possible embodiments, the pressure sensing module includes an elastic element and a strain gauge disposed in a middle region of a surface of the elastic element; the second structural member is used for pressing the edge area of the surface of the elastic element so as to enable the elastic element to deform, and the strain gauge is used for detecting the deformation so as to detect the pressure signal.

In some possible embodiments, the first pulse wave detection module is a first photoplethysmography, PPG, detection module; the first PPG detection module comprises: a light transmissive cover plate, a first light source and a first light detector; the light-transmitting cover plate is used for receiving the press of the user; the first light source and the first light detector are arranged on one side of the light-transmitting cover plate facing the inside of the electronic device, the first light source is used for transmitting light signals of a target waveband to a pressing part of the user at the light-transmitting cover plate, and the first light detector is used for receiving the light signals reflected and/or transmitted by the pressing part to form the first pulse wave signal.

In some possible embodiments, the light-transmissive cover reuses a portion of the housing of the first key.

In some possible embodiments, the first PPG detection module further comprises: the lens is arranged between the light-transmitting cover plate and the first light source and used for converging the optical signal of the first light source to the pressing part of the user.

In some possible embodiments, the first PPG detection module further comprises: a spacer positioned between the first light source and the first light detector to prevent light signals emitted by the first light source from directly entering the first light detector.

In some possible embodiments, the first PPG detection module further comprises: a substrate and a support, the substrate for supporting the first light source and the first light detector; the bracket is arranged at the peripheral edge of the substrate and used for supporting the light-transmitting cover plate.

In some possible embodiments, the light-transmissive cover plate, the holder and the substrate form an enclosed chamber.

In some possible embodiments, the support and/or the substrate reuse a portion of the housing of the first key.

In some possible embodiments, the first PPG detection module comprises: a plurality of the first light sources and/or a plurality of the first light detectors, wherein the plurality of the first light sources are configured to emit light signals of at least two different target wavelength bands.

In some possible embodiments, the first key is disposed on a side surface or a back surface of the electronic device.

In some possible embodiments, the first key multiplexes function keys of the electronic device.

In some possible embodiments, the first key multiplexes a power key or a volume key on a side of the electronic device.

In some possible embodiments, the first biometric information of the user includes a blood pressure of the user.

In some possible embodiments, the detection device further comprises: a second detection part; the second detection part includes: the second pulse wave detection module is used for detecting a second pulse wave signal; an Electrocardiogram (ECG) detection module for detecting an ECG signal, wherein the second pulse wave signal and the ECG signal are used for detecting second biological characteristic information of the user; the first biological characteristic information and the second biological characteristic information are used for processing to obtain target biological characteristic information of the user.

In some possible embodiments, the detection device further comprises: a processor connecting the first detection component and the second detection component; the processor is used for detecting first biological characteristic information of the user according to the pressure signal and the first pulse wave signal, detecting second biological characteristic information of the user according to the second pulse wave signal and the ECG signal, and processing the first biological characteristic information and the second biological characteristic information to obtain target biological characteristic information of the user.

In some possible embodiments, the second pulse wave detection module is a second photoplethysmography (PPG) detection module disposed on a back side of the electronic device, the ECG detection module including: a plurality of Electrocardiogram (ECG) detection electrodes, a first ECG detection electrode of the plurality of ECG detection electrodes disposed on a back side of the electronic device, a second ECG detection electrode of the plurality of ECG detection electrodes disposed on a side of the electronic device.

In some possible embodiments, the first key is disposed on a first side of the electronic device, the second ECG detection electrode is disposed on a second side of the electronic device, and the first side and the second side are respectively two opposite sides of the electronic device.

In some possible embodiments, the second ECG detection electrode is disposed in a second key on a side of the electronic device.

In a second aspect, an electronic device is provided, comprising: the device for detecting a biometric characteristic of the first aspect or any one of the possible embodiments of the first aspect.

In some possible embodiments, the electronic device is a smart watch or a cell phone.

Drawings

Fig. 1 is a block diagram of an electronic device to which the biological information detection system is applied.

Fig. 2 is a schematic structural diagram of a device for acquiring photoplethysmography by using a photoelectric sensor.

Fig. 3 is a waveform characteristic diagram of a photoplethysmographic pulse wave.

Fig. 4 is a schematic diagram of the relative relationship between ECG waveforms, PPG waveforms, and PTT.

Fig. 5 is a schematic block diagram of a biometric information detection apparatus according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a first detection component according to an embodiment of the present application.

Fig. 7 is a schematic top view of the first sensing member of fig. 6.

Fig. 8 to 11 are further schematic top views of the first detection member according to the embodiment of the present application.

Fig. 12 is a schematic top view of an electronic device according to an embodiment of the present application.

Fig. 13 is a schematic side view of the electronic device of fig. 12.

Fig. 14 is a schematic diagram of a user pressing manner according to an embodiment of the present application.

Fig. 15 is another schematic rear view of an electronic device according to an embodiment of the application.

Fig. 16 is a schematic cross-sectional view of the first button of the electronic device of fig. 13 and 15 along the direction a-a'.

Fig. 17 is another schematic structural diagram of the first detection member according to the embodiment of the present application.

Fig. 18 is another schematic structural diagram of the first detection member according to the embodiment of the present application.

Fig. 19 is another structural diagram of the first detection member according to the embodiment of the present application.

Fig. 20 is another schematic structural diagram of the first detection member according to the embodiment of the present application.

Fig. 21 is another schematic block diagram of a biometric information detection apparatus according to an embodiment of the present application.

Fig. 22 is another schematic bottom view of an electronic device according to an embodiment of the present application.

Fig. 23 is a schematic top view of the electronic device of fig. 22.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

In particular, the present application is applicable to a biological information detection system, which can be applied to various types of electronic devices, which can be smart wearable devices, mobile phones, tablet computers, mobile medical devices, and the like, wherein the smart wearable devices can include at least one of the following devices: a watch, bracelet, foot chain, necklace, glasses, or head-mounted device; the ambulatory medical device may include at least one of the following devices: blood glucose monitoring equipment, heart rate monitoring equipment, blood pressure measuring equipment, body temperature measuring equipment and the like, and the embodiment of the application does not limit the equipment.

Fig. 1 shows a block diagram of an electronic device to which the biometric information system is applied.

As shown in fig. 1, electronic device 100 may include a bus 110, a processor 120, a memory 130, an input/output interface 140, a display 150, a communication interface 160, and a biological information detection system 170.

Bus 110 may include circuitry to enable communications (e.g., control messages or data) to be transmitted between components in electronic device 100. The processor 120 may include one or more types of data processors for performing data processing. The memory 130 may include volatile memory and/or non-volatile memory. Which may store instructions or data related to other functional components in electronic device 100.

The input/output interface 140 may be used to receive instructions or data input from a user or an external device and then transmit the instructions or data to other functional components in the electronic device 100, or may output instructions or data generated by other functional components in the electronic device 100 to the user or the external device.

The Display 150 may include, for example, a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED) Display, or other type of Display. Display 150 may display various types of content for a user, such as text, images, videos, icons, and so forth. Further, the display 150 may include a touch screen through which a user may input related instruction information.

Communication interface 160 may be used to enable communication between electronic device 100 and external devices, such as a network server or other electronic devices. By way of example, the communication interface 160 may communicate with external devices by connecting to a communication network via wireless or wired communication. Wireless communication includes, but is not limited to, cellular communication or short-range communication. The wired communication includes, but is not limited to, at least one of Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), recommended standard 232(RS-232), or other communication methods.

The biometric information detection system 170 is used to enable detection of biometric information of a user, including but not limited to: the heart rate, the blood oxygen saturation, the blood pressure and other parameter information of the user can be obtained by testing the pulse wave of the user or other biological characteristic signals of the user. In other words, the biological information detecting system 170 in the embodiment of the present application may be used to detect the pulse wave of the user, and obtain one or more kinds of biological characteristic information of the user based on the calculation analysis of the pulse wave.

In some embodiments, electronic device 100 may omit at least one of the above components, or may further include other components, which are not described in detail herein.

Specifically, the embodiment of the present application relates to a biometric information detection apparatus, which can be applied to the biometric information detection system 170 in fig. 1 and is disposed in the electronic device 100 in fig. 1. More specifically, the device for detecting biometric information in the embodiment of the present application can be used for detecting blood pressure, and has the advantages of portability, non-invasive measurement, high measurement accuracy, and the like.

For ease of understanding, the related concepts to which this application relates will first be described.

(1) Pulse wave

The pulse wave refers to the periodic fluctuation of the artery wall caused by the periodic changes of the pressure and the volume in the artery in the periodic contraction and relaxation process of the heart, namely the periodic pulsation of the heart pushes the blood to move along the blood vessel to generate the pulse wave. Therefore, the pulse wave is influenced by the functional state of the heart, the resistance of the blood vessels in the arteries passing through the various levels, the elasticity of the blood vessels, the viscosity of the blood, and the like, and the change in the physiological characteristics of the cardiovascular system causes the change in the intensity, form, rhythm and rate of the pulse wave signal. Therefore, the physiological and pathological information contained in the pulse wave signals can be extracted by analyzing and researching the characteristics of the pulse wave signals, and the early diagnosis and prevention of the diseases related to the cardiovascular system are facilitated.

The photoplethysmography is generally obtained by using a photoelectric sensor, so the photoplethysmography is also commonly referred to as a photoplethysmography (PPG), a time-varying curve of a blood volume obtained by the photoplethysmography is a photoplethysmogram, and hereinafter, the photoplethysmography is also referred to as a photoplethysmography signal or a PPG signal.

In particular, fig. 2 shows a schematic structural diagram of a device for acquiring photoplethysmography by using a photoelectric sensor.

As shown in fig. 2, when a light source emits a light beam with a certain wavelength to the surface of human skin (e.g., the skin of a finger as shown in fig. 2), each heartbeat, the contraction and expansion of blood vessels affects the transmission of light (e.g., light passing through the fingertip in a transmission PPG) or the reflection of light (e.g., light from the vicinity of the surface of the finger in a reflection PPG). There is some attenuation of the light as it passes through the skin tissue and reflects back to the light detector. The absorption of light by the tissues like muscles, bones, veins and other connections is substantially constant (if there is no substantial movement of the measurement site), but the arteries will be different and naturally also vary due to the pulsation of the blood in the arteries. Therefore, after the optical detector converts the optical signal reflected and/or transmitted by the human body into an electrical signal, the absorption of the optical signal by the artery is changed, and the absorption of the optical signal by other tissues is basically unchanged, so that the obtained signal can be divided into a direct current DC signal and an alternating current AC signal, and the AC signal is extracted from the direct current DC signal and the alternating current AC signal, so that the characteristic of blood flow can be reflected.

Fig. 3 shows a waveform characteristic diagram of a photoplethysmographic wave.

As shown in FIG. 3, a complete pulse waveform has A, B, C, D4 important feature points, which include ascending branches and descending branches. As shown in FIG. 3, A is called the dominant wave, B is called the tidal wave, C is called the dicrotic wave peak, D is called the dicrotic wave trough, OA is the ascending branch of the dominant wave, and OO' is the pulse wave period.

The OA segment is the ascending branch of pulse waveform, and the arterial blood pressure is rapidly increased due to the contraction and ejection of blood from the left ventricle, so that the arterial wall is expanded. Point O is the starting point of the cardiac ejection phase and point a is the highest point of aortic pressure, reflecting the maximum of pressure and volume in the artery.

The AD section is the front section of the descending branch of the pulse waveform, and is caused by the process that the blood ejection speed begins to decrease at the later stage of ventricular ejection, the blood volume flowing to the periphery of the aorta is larger than the blood volume flowing into the aorta, the artery is changed from expansion to retraction, and the arterial blood pressure gradually becomes lower. Point B is the left ventricular ejection stop point, the peak point of the reflected wave, also called the tidal wave peak, reflecting the tension, compliance and peripheral resistance of the arterial vessel. Point D is the tidal wave trough point, the demarcation point between systole and diastole.

The DO' section is the posterior section of the descending branch of the pulse waveform, also called the dicrotic wave, and is formed by the blood in the aorta flowing backwards towards the ventricle due to the ventricular diastole, the continuous reduction of the arterial blood pressure. Reflecting the functional status of the aorta, the elasticity of the vessels and the state of blood flow.

(2) Blood pressure detection based on pulse wave

In the existing technical theory, Pulse Wave Velocity (PWV) and Pulse Transit Time (PTT) have a linear relationship with blood pressure, and blood pressure parameters can be calculated according to PWV or PTT and related data models.

Specifically, PTT refers to the time of transmission of a pulse wave from the heart to the measurement site when an artery emits blood, and PWV can be calculated by PTT by the positional relationship between the measurement site and the heart.

At present, because the pulse wave velocity PWV is difficult to be detected, the existing blood pressure detection methods based on PWV all rely on PTT detection.

In some methods, the blood pressure parameter may be estimated by detecting PTT through a blood pressure detection technique combining Electrocardiography (ECG) with PPG.

Fig. 4 shows the relative relationship between ECG, PPG, and PTT.

As shown in fig. 4, in an ECG waveform, the R-wave represents the contraction of the ventricles, and the time interval between the R-wave in the ECG waveform to the main wave in the PPG waveform, can be denoted as PPT. Alternatively, the PPT may be represented by the time interval before the R-wave in the ECG waveform reaches other characteristic points in the PPG waveform.

Specifically, the method detects and obtains the Blood Pressure value as the high frequency component of the Systolic Blood Pressure (SBP) according to the PTT and the function equation, while the low frequency component of the Systolic Blood Pressure needs to be measured by a more accurate Blood Pressure measuring method, such as an auscultatory method or an oscillometric method, and the final more accurate Systolic Blood Pressure value can be determined according to the sum of the low frequency component and the high frequency component of the Systolic Blood Pressure. Further, according to a function equation among the PTT, the more accurate Systolic Blood Pressure (SBP), and the Diastolic Blood Pressure (DPB), the more accurate value of the Diastolic DPB may be obtained. In other words, the method needs to measure the accurate low-frequency component of blood pressure regularly by an external device such as a sphygmomanometer, and calibrate the blood pressure value detected by the PPT detection method, so as to obtain a more accurate blood pressure detection result.

In addition to the above-described way of determining blood pressure from PWV or PTT, blood pressure or other biometric parameters can also be determined by Pulse Wave Analysis (PWA).

Specifically, the characteristic parameters in the pulse wave can be extracted, the characteristic parameters with the best correlation with the blood pressure can be found by analyzing the correlation between the characteristic parameters and the blood pressure, the characteristic parameters are used as variables for measuring the blood pressure, then regression analysis is carried out, and a regression equation is established for measuring the blood pressure.

Alternatively, the amplitude of any feature point in the pulse wave shown in fig. 3 or the time difference between any two feature points may be used as a feature parameter, and the correlation between the feature parameter and the blood pressure may be analyzed through a large amount of experimental data, and a regression equation may be established. In the actual blood pressure measuring process, the blood pressure value is measured according to the characteristic parameters and the regression equation by detecting the pulse wave and extracting the characteristic parameters from the pulse wave.

Therefore, based on the above description, the pulse wave contains abundant biometric information, and the various biometric information can be extracted from the pulse wave by detecting and analyzing the pulse wave. However, in the actual detection process, due to the influence of various factors such as environment and human body difference, the detected pulse wave has large interference and poor quality, so that the accuracy of the biological characteristic information obtained based on the pulse wave with poor quality is low. As can be seen from the above description of blood pressure detection, the blood pressure parameter obtained based on PTT detection is not an absolute blood pressure parameter, and a more accurate blood pressure detection result can be obtained only by further correcting the blood pressure value obtained by the sphygmomanometer, which also affects the convenience of blood pressure detection of the user and affects user experience.

Based on this, the application provides a detection device of biometric information, which does not need additional devices such as a sphygmomanometer to assist in calibration, does not need an electronic device to provide a device such as an air bag to apply pressure to a user, and presses the detection device actively by the user, and detects a pulse wave signal and a pressure signal at a pressing part of the detection device, where the pressure signal and the pulse wave signal correspond to each other, but not two signals which are independent and unrelated to each other, that is, the pulse wave signal is a pulse wave signal corresponding to the pressure signal applied by the user, and further the pulse wave signal includes pulse wave change information caused by pressure change. Compared with the situation that no pressure is applied to the human body, the pulse wave signal detected by the detection device in the embodiment of the application is small in interference degree, the pulse wave signal contains pulse wave change information caused by pressure change, biological characteristic information detection is carried out based on the pulse wave signal and the pressure signal, the accuracy of a detection result can be improved, and the carrying is convenient.

Fig. 5 is a schematic block diagram of a biometric information detection apparatus according to the present application.

As shown in fig. 5, the apparatus 200 for detecting biometric information may include: a first detection part 201, the first detection part 201 may include:

a first pulse wave detection module 210, configured to detect a first pulse wave signal of a user when the user presses the first pulse wave detection module 210;

the pressure sensing module 220 is configured to detect a pressure signal when the user presses the first pulse wave detecting module 210, where the pressure signal corresponds to the first pulse wave signal, and the pressure signal and the first pulse wave signal are used to detect first biometric information of the user.

Optionally, in the embodiment of the present application, a Pressure sensor (Pressure sensor) is included in the Pressure sensing module 220 for sensing a Pressure signal applied to the Pressure sensor, for example, when the user presses the first pulse wave detecting module 210 while pressing on the Pressure sensing module 220, the Pressure sensor in the Pressure sensing module 220 is used for directly detecting the pressing Pressure of the user. Or, when the user presses the first pulse wave detection module 210, the first pulse wave detection module 210 presses on the pressure sensing module 220, and the pressure sensor in the pressure sensing module 220 is used to detect the pressing pressure of the first pulse wave detection module 210 on the first pulse wave detection module 220, so as to detect the pressing pressure of the user. Still alternatively, when the user presses the first pulse wave detection module 210, the pressure sensing module 220 may also detect a pressing pressure of the user in other manners, which is not specifically limited in this embodiment of the application.

Wherein the pressure sensor includes but is not limited to: a piezoelectric pressure sensor, a piezoresistive pressure sensor, a capacitive pressure sensor, an inductive pressure sensor, or other types of pressure sensors, which are not specifically limited in the embodiments of the present application.

As an example, the pressure sensor in the pressure sensing module 220 is a piezoresistive pressure sensor. Specifically, the Piezoresistive pressure sensor mainly detects a pressure signal based on a Piezoresistive effect (Piezoresistive effect) which is used for describing a resistance change of a material under mechanical stress, that is, the Piezoresistive pressure sensor is used for detecting the resistance change of the material to detect the pressure signal acting on the material.

Optionally, in this embodiment of the application, the first pulse wave signal detected by the first pulse wave detection module 210 may be a photoplethysmography (PPG) signal, and since the measurement method of the PPG signal is easy to implement, the example that the first pulse wave detection module 210 detects the PPG signal as the first pulse wave signal is described as an example below.

As an example, fig. 6 shows a schematic structural diagram of the first detection part 201 described above.

As shown in fig. 6, if the first pulse wave detection module 210 is a PPG detection module, the first pulse wave detection module 210 may include: a cover plate 211, a first light source 212, and a first light detector 213.

Specifically, the cover plate 211 is a light-transmitting cover plate made of a transparent material, wherein the transparent material may be a material with high light transmittance, such as glass or resin, and reduces attenuation of an optical signal when the optical signal passes through the cover plate.

When the user's finger presses on the cover 211, the first light source 212 is used to emit light signals to the user's finger, and the light signals are reflected or scattered by blood vessels in the finger, received by the first light detector 213, and subjected to photoelectric conversion and electric signal processing to form a PPG signal.

Further, in the above process, the user's finger is pressed against the cover 211, and the pressing pressure of the user's finger is generally unstable, in other words, the pressing pressure of the user's finger generally varies. Therefore, the blood volume, the blood pressure and other relevant parameters of the finger vessel are changed by squeezing the finger vessel to different degrees under the changed compression pressure, so that the PPG signal formed by the first light detector 213 is also changed along with the change of the compression pressure, and the biometric information of the user is determined according to the change degree of the PPG signal under the different compression pressures. For example, determining a blood pressure parameter of the user, can improve the accuracy of blood pressure detection or the accuracy of other biometric parameters compared to determining the blood pressure parameter of the user directly from the PPG signal.

Alternatively, in some embodiments, the pressure sensing module 220 and the first pulse wave detecting module 210 are disposed side by side, and both may be located on the same plane.

Preferably, in other embodiments, the pressure sensing module 220 is stacked with the first pulse wave detecting module 210.

As an example, as shown in fig. 6, the first pulse wave detection module 210 and the pressure sensing module 220 are stacked up and down, when the cover plate 211 is pressed by a finger of a user, that is, when the first pulse wave detection module 210 is pressed by the finger of the user, the first pulse wave detection module 210 is configured to detect a PPG signal of the finger of the user, and at the same time, the pressure sensing module 220 may be configured to detect a pressing pressure of the finger of the user synchronously, and at this time, the pressure signal detected by the pressure sensing module 220 and the PPG signal detected by the first pulse wave detection module 210 are a pressure signal and a PPG signal of the same part of the finger of the user. If the pressure sensing module 220 and the first pulse wave detection module 210 are arranged side by side, the pressure signal detected by the pressure sensing module 220 and the PPG signal detected by the first pulse wave detection module 210 are not the pressure signal and the PPG signal of the same part of the finger of the user. Therefore, according to the technical scheme of the embodiment of the application, the first pulse wave detection module 210 and the pressure sensing module 220 are stacked, the pressure signal and the PPG signal have better correspondence, and the biometric information obtained by detecting the pressure signal and the PPG signal has higher accuracy.

Therefore, according to the above description, the first pulse wave detection module and the pressure sensing module are stacked together, the pressure signal is detected while the first pulse wave signal is detected, and the pressure signal and the first pulse wave signal are used together for detecting the biological characteristic parameters such as blood pressure, blood oxygen and heart rate, so that the accuracy of the biological characteristic parameter detection can be improved, and the use experience of the user is improved.

Continuing to refer to the schematic structural view of the first detection member 201 shown in fig. 6. As shown in fig. 6, the first pulse wave detecting module 210 may further include a substrate 214, and the first light source 212 and the first light detector 213 are disposed on the substrate 214, and optionally, the substrate 214 includes, but is not limited to, a Printed Circuit Board (PCB) or other types of Circuit boards for electrically connecting the first light source 212 and the first light detector 213. Specifically, the substrate 214 may be further connected to a processor or a controller of the electronic device through other electrical connection means, and a control signal generated by the processor or the controller may be transmitted to the first light source 212 and the first light detector 213 through the substrate 214 to control the operation timing of the two. In addition, the electrical signal generated by the first photodetector 213 after receiving the optical signal is also transmitted to the processor or controller of the electronic device through the substrate 214 for data processing, forming a PPG signal and detecting the biometric information.

Further, as shown in fig. 6, in the first pulse wave detection module 210, a spacer 215 is further disposed between the first light source 212 and the first light detector 213, and the spacer 215 is used to prevent the light signal emitted by the first light source 212 from directly reaching the first light detector 213, so as to form an interference light signal for detecting the biometric information. In the light signals received by the first photodetector 213, if the stronger the light signal reflected or transmitted by the finger is, and the weaker the other interference light signals such as the ambient light signal or the light source light signal are, the better the quality of the PPG signal detected by the first photodetector 213 is, the higher the accuracy of the biometric information detection is.

As an example, in the embodiment shown in fig. 6, the first pulse wave detection module 210 further includes a support 216. Specifically, the support 216 is disposed at the peripheral edge of the substrate 214 for supporting the cover 211 disposed above the first light source 212 and the first light detector 213. Further, the spacer 215 is also located between the cover plate 211 and the base plate 214, which can be used to further support the cover plate 211 to improve the mechanical stability of the device.

Optionally, the combination of the support 216, the cover plate 211 and the base plate 214 may form a closed chamber, and further, the spacer 215 is used to divide the closed chamber into two chambers, the first light source 212 and the first light detector 213 are respectively located in the two chambers, and the two chambers can perform a good protection function on the first light source 212 and the first light detector 213, and can avoid interference caused by light other than the first light source, thereby improving accuracy of the PPG signal.

Optionally, the two chambers may be filled with air, which has a small influence on the transmission of optical signals, or the two chambers may be filled with a transparent medium layer with high light transmittance, which can improve the overall stability of the device.

In the embodiment shown in fig. 6 above, the first pulse wave detection module 210 includes a single first light source 212 and a single first light detector 213. The first pulse wave detection module 210 of this embodiment has a simple structure, and is advantageous to miniaturizing the device and reducing the cost of the device on the basis of being able to detect the PPG signal.

Optionally, the first Light source 212 includes, but is not limited to, a point-shaped Light source, such as a Light-Emitting Diode (LED), a Laser Diode (LD), or an infrared Emitting Diode, and may also be a linear Light source or a planar Light source, which is not specifically limited in this embodiment of the present invention. The first light source 212 may be configured to emit one or more light signals in a target wavelength band, such as a red wavelength band or a green wavelength band.

Optionally, the first photo detector 213 includes, but is not limited to, a Photo Diode (PD), a photo transistor, etc., which is used for performing photoelectric conversion to convert the received light signal reflected or scattered by the finger into a corresponding electrical signal. Optionally, the first photo-detector 213 may further include an optical element and a processing circuit, for example, the optical element may be disposed above the PD for guiding more effective optical signals into the PD to improve the photo-detection efficiency of the PD. The processing circuit can be used for processing the electric signals obtained by processing the PD, and is beneficial to a subsequent processor to process the electric signals to obtain PPG signals with better signal quality. Or, the processing circuit may also be configured to perform signal processing on the electrical signal obtained by the PD to obtain a PPG signal, and then transmit the PPG signal to the processor to perform detection of the biometric information.

Fig. 7 shows a top view of the first detection member 201 of fig. 6.

As shown in fig. 7, the cover 211 in the first pulse wave detecting module 210 may be circular, oval or other regular or irregular shapes, and the first light source 212 and the first light detector 213 are located below the middle region of the cover 211 to be able to emit light signals to a good contact region of the finger with the cover 211 and detect light signals reflected or transmitted by the finger at the contact region.

As an example, as shown in fig. 7, the cross-section of the support frame 216 is a frame shape, and a partial area or a whole area of the periphery of the support frame 216 may be further provided with a support structure for supporting the cover plate 211. Alternatively, in other embodiments, the support 216 is a cylindrical structure, wherein a cavity is provided to accommodate the first light source 212 and the first light detector 213, and the cross-sectional shape of the support 216 is the same as or similar to the cross-sectional shape of the cover 211.

Optionally, there may be a plurality of first light sources 212 in the first pulse wave detection module 210, and there may also be a plurality of first light detectors 213 in the first pulse wave detection module 210.

For example, fig. 8 to 11 show other various top views of the first detection member 201.

As shown in fig. 8 and 9, the first pulse wave detection module 210 includes two first light sources 212 and a first light detector 213. Specifically, the two first light sources 212 are respectively used for emitting light signals of different target wavelength bands, and as an example, the two first light sources 212 respectively emit light signals of a red wavelength band and light signals of a green wavelength band. Further, the two first light sources 212 are used to emit light signals at different times, respectively, and one first photo detector 213 receives a red light signal passing through the finger at a first time and receives a green light signal passing through the finger at a second time.

As a possible embodiment, in fig. 8, one spacer 215 divides the closed chamber formed by the support 216, the cover 211 and the base plate 214 into two chambers, two first light sources 212 being located in the same chamber and a first light detector 213 being located in the other chamber; as another possible embodiment, in fig. 9, two spacers 215 divide the closed chamber formed by the support 216, the cover plate 211 and the base plate 214 into three chambers, the first light detector 213 is located in the middle chamber, and the two first light sources 212 are respectively located in the chambers on both sides.

Adopt the scheme of this embodiment, through the PPG signal of gathering a plurality of different wave bands, can carry out biological characteristic parameter according to the PPG signal of a plurality of different wave bands, for example blood oxygen, heart rate etc. characteristic parameter's detection can improve biological characteristic parameter detection's degree of accuracy, in addition, carry out biological characteristic information's detection through the PPG signal of a plurality of different wave bands and pressure signal, can improve biological characteristic information detection's degree of accuracy equally.

As shown in fig. 10, the first pulse wave detecting module 210 includes a first light source 212 and two first light detectors 213, similar to fig. 9, the first light source 212 is located in the middle chamber, and the two first light detectors 213 are respectively located in the two side chambers.

By adopting the scheme of the embodiment, more optical signals passing through the finger can be received by arranging the plurality of photoelectric sensors, the plurality of optical signals passing through the finger and received by the plurality of photoelectric sensors are used for processing to form a plurality of PPG signals, the plurality of PPG signals are used for comprehensively detecting to obtain the biological characteristic parameters, and the accuracy of the detection of the biological characteristic parameters can be improved.

As shown in fig. 11, the first pulse wave detection module 210 includes two first light sources 212 and two first light detectors 213, wherein the two first light sources 212 are located in the middle chamber, and the two first light detectors 213 are located in the two side chambers, respectively.

By adopting the technical solution of this embodiment, the advantages of the first pulse wave detecting module 210 in fig. 8 to 10 can be combined, and details are not repeated herein.

Optionally, the first detection component 201 in any of the above embodiments may be disposed on any surface of the electronic device, so as to facilitate pressing by a finger of a user. As an example, the first detection part 201 may be disposed at a side surface or a rear surface of the electronic device.

Specifically, if the first detection component 201 is disposed on the side of the electronic device, the front or the back of the electronic device can be prevented from occupying extra space, and the appearance of the electronic device is improved. And if electronic equipment is wearing formula equipment, for example, intelligent wrist-watch etc. set up first detection part 201 in the side of intelligent wrist-watch, neither influence the wearing experience at the wrist-watch back, do not influence the positive screen display of wrist-watch yet, also can make the wrist-watch appearance more fashionable, more pleasing to the eye, it is convenient in addition that the finger presses this first detection part 201, can improve user experience.

Alternatively, the first detection member 201 may be fixedly disposed on a surface of the electronic device.

Preferably, the first detecting part 201 may be disposed at a first key of the electronic device, and particularly, compared with the technical scheme that the first detection part 201 is fixedly arranged on the surface of the electronic equipment, by adopting the scheme of the embodiment of the application, at least part of the first pulse wave detection module 210 and the pressure sensing module 220 can multiplex the space of the cavity in the first key, thereby being beneficial to the miniaturization of the electronic equipment, in addition, the user can quickly find the first key where the first pulse wave detection module 210 and the pressure sensing module 220 are located, and can conveniently perform pressing operation on the first key, so that the user experience is improved.

In some examples, the first key may be a key used by the electronic device to perform other functions, such as a sound key or a power key, or the like, in other words, the first key may be a function key of the electronic device, and the first key is used to perform a biometric information detection function in addition to a sound function or a power function after integrating the first pulse wave detection module 210 and the pressure sensing module 220. By adopting the embodiment, a plurality of functions of the electronic equipment are integrated in the same key, so that the miniaturization development and design of the electronic equipment are facilitated, the production and the manufacture of the electronic equipment are facilitated, the manufacturing procedures and the manufacturing cost are reduced, and the appearance of the electronic equipment is facilitated to be improved.

In other examples, the first key may also be a key dedicated to performing a biometric information detection function in the electronic device, and with this embodiment, only the first pulse wave detection module 210 and the pressure sensing module 220 are disposed in the first key, which is convenient for maintenance and replacement, and is also beneficial to improving the stability of biometric information detection.

Fig. 12 and 13 show a top view and a side view of an electronic device, i.e. a front side and a side of the electronic device.

As an example, the electronic device shown in fig. 12 and 13 is a smart watch, a first button 101 is disposed on a side surface of the electronic device, and at least a part of the first pulse wave detection module 210 and the pressure sensing module 220 may be disposed in the first button 101.

In a general application scenario, the smart watch is worn on the wrist of the left hand of the user, and the first button 101 provided in the embodiment of the present application may be disposed on a button on the right surface of the watch, so that the user can press the smart watch conveniently.

Further, in the embodiment of the present application, in order to improve the stability when the user presses with the finger, the user may be prompted to press the first key 101 in the pressing manner shown in fig. 14 through a display screen of the electronic device or other prompting manners.

As shown in fig. 14, the user presses the thumb on one side of the smart watch, presses the index finger on the other side of the smart watch, and presses the sides of the smart watch with the thumb and index finger together. Optionally, the first key 101 provided in this embodiment of the present application is disposed on a side where the index finger of the user is located, and is configured to detect a pressure signal pressed by the index finger of the user and a PPG signal. By adopting the mode of the embodiment of the application, the stability of the pressure signal obtained by detection can be improved, and the PPG signal with better quality is acquired so as to improve the accuracy of biological characteristic information detection.

Further, as shown in fig. 14, on the side of the thumb of the user, other sensing modules may be disposed for detecting vital signs of the user and providing various functions of the watch, for example, a temperature sensing module, a light sensing module, a bio-impedance sensing module, an ECG sensing module, etc. may be disposed, which is not particularly limited in the embodiment of the present application.

Fig. 15 shows a rear view of another electronic device, i.e. the back of the electronic device.

As an example, the electronic device shown in fig. 15 is a mobile phone, the back surface of which is provided with a first key 101, and at least part of the first pulse wave detection module 210 and the pressure sensing module 220 can be arranged in the first key 101.

When a user holds the mobile phone, a finger can press the first key 101 on the back of the mobile phone conveniently, so that the first pulse wave detection module 210 and the pressure sensing module 220 in the first key 101 can detect a pressure signal and a PPG signal pressed by the finger.

Optionally, the first key 101 in this embodiment of the application may also be disposed on the front or the side of the smart phone, which is not specifically limited in this embodiment of the application.

In addition, in the smart phone of the embodiment of the application, an ECG sensing module and other sensing modules for detecting biological characteristics and the like can be further provided for detecting vital signs of the user and providing multiple functions, so that the use experience of the user can be improved.

Alternatively, fig. 16 shows a schematic cross-sectional view of the first key 101 in fig. 13 and 15 along the direction a-a'.

As shown in fig. 16, the first key 101 includes a cavity therein, and optionally, the cavity can accommodate therein a first detecting member 201 shown in fig. 6, wherein:

the first detection part 201 includes:

a first pulse wave detection module 210 at least partially disposed in the cavity of the first key 101, wherein the first pulse wave detection module 210 is configured to detect a first pulse wave signal of the user when the user presses the first key 101;

the pressure sensing module 220 is at least partially disposed in the cavity of the first key 101, the pressure sensing module 220 is configured to detect a pressure signal applied to the first key 101 by a user, the first pulse wave signal is a pulse wave signal corresponding to the pressure signal applied by the user, and the pressure signal and the first pulse wave signal are used to detect first biometric information of the user.

In some embodiments, as shown in fig. 16, the pressure sensing module 220 is stacked with the first pulse wave detection module 210, and the pressure sensing module 220 is located on a side of the first pulse wave detection module 210 facing the inside of the electronic device.

In other embodiments, the pressure sensing module 220 and the first pulse wave detecting module 210 may also be disposed in parallel, and both may be located on the same plane.

Optionally, as an example, the first button 101 has a separate housing, a cavity is formed in the housing, and at least a portion of the pressure sensing module 220 and at least a portion of the first pulse wave detecting module 210 are disposed in the cavity.

Optionally, as another example, a part of the housing of the first button 101 may be reused as a part of the components of the first pulse wave detection module 210 and/or the pressure sensing module 220, or alternatively, a part of the components of the first pulse wave detection module 210 and/or the pressure sensing module 220 may be reused as a part of the housing of the first button 101.

Fig. 17 shows a schematic structural diagram of another first detection member 201.

As shown in fig. 17, the first pulse wave detecting module 210 is fixedly connected to the housing of the first button 101, and the pressure sensing module 220 is fixedly connected to the first pulse wave detecting module 210, and the first detecting component 201 further includes: the first structural member 230 is disposed on one side of the pressure sensing module 220, and the first structural member 230 and the pressure sensing module 220 are both located on the same side of the first pulse wave detecting module 210. Specifically, in the embodiment of the present application, the first structural member 230 is disposed on a side of the pressure sensing module 220 facing the inside of the electronic device.

When a user presses the first key 101, the pressure sensing module 220 and the first pulse wave detecting module 210 are linked to press the first structural member 230, and the pressure sensing module 220 is used for detecting a force between the pressure sensing module 220 and the first structural member 230 so as to detect a pressure signal applied to the first key 101 by the user.

Alternatively, in the embodiment of the present application, the first structural member 230 may be a fixed structural member disposed inside the electronic device.

In some embodiments, the first structural member 230 can be disposed within a cavity in the first key 101. Alternatively, in other embodiments, the first structural member 230 may also be a structural member in the electronic device where the first detecting part 201 is located, and is disposed outside the first button 101, for example, the first structural member 230 may be a housing or a middle frame of the electronic device, and the like.

As an example, the pressure sensing module 220 includes a silicon pressure sensor, the silicon pressure sensor is used for being linked with the first pulse wave detecting module 210 and pressing the first structural member 230, the resistance of the silicon pressure sensor changes along with the change of the pressing pressure, the silicon pressure sensor has high measurement precision and stability, and the measurement result of the high-precision pressure signal can be obtained, so as to improve the accuracy of the detection of the biometric information.

Optionally, as shown in fig. 17, the cover 211 in the first pulse wave detection module 210 multiplexes a part of the housing of the first key 101, that is, the cover 211 serves as an interface for interacting with the user in the first key 101, and is used for receiving the press of the user. When the user presses the first key 101, the user presses the cover 211. Other components of the first pulse wave detection module 210 may be connected to the housing of the first button 101 in this manner.

Further, in the embodiment shown in fig. 17, the support 216 in the first pulse wave detection module 210 may also reuse a part of the housing of the first button 101. Alternatively, in other embodiments, the substrate 214 in the first pulse wave detection module 210 may also be multiplexed with a part of the housing of the first button 101.

Compared with the case that the first button 101 has an independent housing and the subassembly in the middle of the first pulse wave detection module 210 is not multiplexed, the embodiment shown in fig. 17 can further reduce the manufacturing cost of the first button 101 and the first pulse wave detection module 210, thereby reducing the manufacturing cost of the electronic device.

Fig. 18 shows a schematic structural diagram of another first detection member 201.

As shown in fig. 18, the first pulse wave detecting module 210 is fixedly connected to the housing of the first button 101, and the pressure sensing module 220 is detachably disposed at one side of the first pulse wave detecting module 210, and the first detecting member 201 further includes: the second structural member 240 is fixedly connected to the first pulse wave detecting module 210, and the second structural member 240 and the pressure sensing module 220 are disposed on the same side of the first pulse wave detecting module 210. Specifically, in the embodiment of the present application, the second structural component 240 is disposed on a side of the first pulse wave detection module 210 facing the inside of the electronic device.

When the user presses the first button 101, the second structural member 240 and the first pulse wave detection module 210 are linked to press the pressure sensing module 220, and the pressure sensing module 220 is configured to detect an acting force between the second structural member 240 and the second structural member 240 to detect a pressure signal pressed by the user.

Optionally, in some embodiments, the pressure sensing module 220 includes a strain sensor therein, the strain sensor including: the strain gauge is a resistance strain gauge which is arranged on the surface of the elastic element and converts the strain change of the elastic element into the resistance change so as to detect the force causing the elastic element to generate strain.

In the embodiment of the present application, the user presses the first pulse wave detection module 210, the first pulse wave detection module 210 and the second structural member 240 together apply a pressure to the elastic member, and the strain gauge is used for detecting the pressure applied to the elastic member to detect a pressure signal pressed by the user. The pressure signal detected by the method has high precision, and the accuracy of biological characteristic information detection is improved.

As an example, fig. 19 shows a schematic structural diagram of another first detection part 201.

As shown in fig. 19, the pressure sensing module 220 includes an elastic element 221 and a strain gauge 222, and the elastic element 221 may be a sheet structure, which may be a metal sheet. The strain gauge 222 may be disposed in a middle region of the surface of the elastic element 221, the second structural member 240 is configured to press against an edge region of the surface of the elastic element 221 to deform the elastic element 221, and the strain gauge 222 is configured to detect the deformation to detect the pressure signal pressed by the user.

It is understood that the strain sensor in the pressure sensing module 220 may have other related art structures besides the structure shown in fig. 19, and the embodiment of the present invention is not limited thereto.

It is also understood that, in addition to the piezoresistive pressure sensors, other types of pressure sensors may be included in the pressure sensing module 220 shown in fig. 17 to 19, and for other types of pressure sensors, corresponding pressure detection structures may be designed in the pressure sensing module 220, and the design of other types of pressure sensors and their corresponding pressure detection structures is not discussed in detail herein.

Alternatively, as shown in fig. 18 and 19, the cover 211 in the first pulse wave detection module 210 multiplexes a part of the housing of the first key 101, i.e., the cover 211, as an interface for the user to interact with the first key 101, for receiving the user's press. When the user presses the first key 101, the user presses the cover 211. Other components of the first pulse wave detection module 210 may be connected to the housing of the first button 101 in this manner.

Further, in the embodiment shown in fig. 18 and 19, the support 216 in the first pulse wave detection module 210 may also reuse a part of the housing of the first button 101. Alternatively, in other embodiments, the substrate 214 in the first pulse wave detection module 210 may also be multiplexed with a part of the housing of the first button 101.

In the first detection part 201 shown in fig. 17, if the first structural member 230 is a fixed structural member, when the force of pressing by the user is large, the action between the first structural member 230 and the pressure sensing module 220 is large, and the pressure sensing module 220 is easily damaged.

In view of this problem, in the embodiment of the present application, an elastic module is added to provide a movable distance for the pressure sensing module 220 and the first structural member 230, and the movable distance is limited within a preset range, so as to limit the acting force between the pressure sensing module 220 and the first structural member 230 within the preset range, and prevent the pressure sensing module 220 from being damaged by an excessive acting force.

Fig. 20 shows a schematic structural diagram of another first detection part 201, which may be a relatively specific implementation of the first detection part 201 shown in fig. 17.

As shown in fig. 20, the first detection unit 201 further includes an elastic module 231. Specifically, the elastic module 231 is connected to the first structural member 230, and is disposed at a position below the first structural member 230, that is, at a side of the first structural member 230 facing the inside of the electronic device, and is further connected to the housing, so that the elastic module can deform along with the first structural member and can limit the stroke of the first structural member.

Alternatively, in the embodiment shown in fig. 20, the cover 211 is reused as a partial housing of the first key 101, when the user presses the first key 101, that is, the user presses the cover 211, the first pulse wave detecting module 210, the pressure sensing module 220 and the first structural member 230 are deformed downward in a linkage manner, and the elastic module 231 is compressed, the elastic module 231 generates a corresponding elastic force to act on the first structural member 230, further, the first structural member 230 generates a force corresponding to the elastic force to act on the pressure sensing module 220, and the pressure sensing module 220 is used for detecting the force to detect the finger pressing pressure.

After the elastic module 231 is gradually compressed until the maximum compression amount is reached along with the increase of the pressing force of the user, the position of the first structural member 230 is fixed, the user feels that the downward pressing cannot be continued, and the increase of the pressing force is stopped, so that the damage of the pressure sensing module 220 caused by the excessive pressing force of the finger can be prevented.

In the embodiment of the present application, the maximum compression amount of the elastic module 231 limits the movable distance between the pressure sensing module 220 and the first structural member 230, and the maximum acting force detected by the pressure sensing module 220 is the maximum elastic force of the elastic module 231. By controlling the elastic parameters of the elastic module 231 and controlling the maximum elastic force within the tolerable pressure range of the pressure sensing module 220, the pressure sensing module 220 can be prevented from being damaged by excessive pressure.

Optionally, in the embodiment of the present application, the elastic module 231 includes, but is not limited to, a spring, and may also be any other type of elastic element, which is not specifically limited in the embodiment of the present application.

In some embodiments, the elastic module 231 is only used for providing a predetermined deformation displacement for the first structural member 230, and an elastic structural member of its own is still disposed under the first button 101.

Alternatively, in other embodiments, the elastic module 231 may also be reused as an elastic structural member of the first button 101, and the elastic displacement provided for the first structural member 230 is the elastic displacement of the first button 101, so as to limit the pressing stroke of the first button 101. With this embodiment, if the first button 101 has a button stroke and has an elastic structural member, the elastic structural member is reused as the elastic module for protecting the pressure sensing module 220 from being damaged in the embodiment of the present application, so that the manufacturing costs of the first button 101 and the first pulse wave detection module 210 are further reduced on the premise of improving the reliability and stability of the first detection component 201, thereby reducing the manufacturing cost of the electronic device.

Optionally, as shown in fig. 20, in the embodiment of the present application, the first pulse wave detection module 210 further includes: and the lens 217 is arranged between the first light source 212 and the cover plate 211 and is used for converging the light signal of the first light source 212 to a pressed part of a user at the cover plate 211 so as to increase the light intensity of the light signal reaching the pressed part, thereby increasing the light intensity of the light signal after passing through the finger and improving the quality of the PPG signal.

As an example, in fig. 20, the first pulse wave detecting module 210 includes one first light source 212 and two first light detectors 213, and the lens 217 is correspondingly disposed above the one first light source 212. It can be understood that, if the first pulse wave detecting module 210 includes a plurality of first light sources 212, the first pulse wave detecting module 210 correspondingly includes a plurality of lenses 217, and the plurality of lenses 217 are correspondingly disposed above the plurality of first light sources 212 respectively.

Alternatively, in the embodiment of the present application, the lens 217 may be a Fresnel lens (Fresnel lens), which has a short focal length, uses less material, is thinner, and has a smaller weight and volume than a conventional lens. Therefore, by using the fresnel lens in the first pulse wave detection module 210, it is able to transmit more optical signals, improve the quality of the optical signals to improve the detection accuracy of the biometric parameters, and further compress the thickness of the device and reduce the cost of the device.

In the above embodiment, the apparatus 200 for detecting biometric information includes the first detecting unit 201, and the first detecting unit 201 is configured to detect a pressure signal pressed by the user and a first pulse wave signal corresponding to the pressure signal, and detect the first biometric information of the user according to the pressure signal and the first pulse wave signal.

In the following embodiments, the apparatus 200 for detecting biometric information comprises, in addition to the first detecting means 201, a second detecting means 202, and the second detecting means 202 can be used for detecting second biometric information of the user.

Alternatively, in some embodiments, the second biometric information and the first biometric information may be the same type of biometric information, for example, both blood pressure information, and the biometric information of the same type obtained by the two detection components is used to jointly determine the target biometric information of the user, so that the accuracy of biometric information detection may be improved.

Optionally, in other embodiments, the second biometric information and the first biometric information may be different types of biometric information, for example, the first biometric information is blood pressure information, the second biometric information is blood oxygen information, and so on, so as to provide a plurality of services for detecting biometric information for the user, thereby improving the user experience.

Fig. 21 is a schematic block diagram of another biometric information detection apparatus 200.

As shown in fig. 21, the detection apparatus 200 further includes: a second detection part 202;

the second detection part 202 includes: a second pulse wave detection module 230 for detecting a second pulse wave signal;

an electrocardiogram ECG detection module 240 for detecting an electrocardiogram ECG signal, the second pulse wave signal and the ECG signal being used for detecting second biometric information of the user;

the second biological characteristic information and the first biological characteristic information are used for processing to obtain target biological characteristic information of the user.

Optionally, in this embodiment of the present application, the detection apparatus 200 further includes: a processor for connecting the first detecting unit 201 and the second detecting unit 202;

the processor is used for receiving the pressure signal and the first pulse wave signal detected by the first detecting component 201 and detecting first biological characteristic information of the user according to the pressure signal and the first pulse wave signal, and the processor is also used for receiving the second pulse wave signal and the ECG signal detected by the first detecting component 202 and detecting second biological characteristic information of the user according to the second pulse wave signal and the ECG signal; further, the processor is also used for processing to obtain the target biological characteristic information of the user according to the first biological characteristic information and the second biological characteristic information.

It is understood that the processor may be a separate processor included in the detection apparatus 200, or may also be a processor in the electronic device in which the detection apparatus 200 is located, which, besides being used for processing the related data detected by the detection apparatus 200, may also be used for processing other data in the electronic device and performing other related functions, and optionally, the processor may be the processor 120 in the electronic device 100 in fig. 1.

Optionally, in the embodiment of the present application, the first detection component 201 and the second detection component 202 are both used for detecting the same type of biometric information of the user.

As an example, the first detecting component 201 is configured to detect a first blood pressure parameter of the user, and the second detecting component 202 is configured to detect a second blood pressure parameter of the user, where the first blood pressure parameter and the second blood pressure parameter are used to jointly determine a target blood pressure parameter of the user, so as to improve the accuracy of blood pressure detection.

Optionally, in some embodiments, the second pulse wave detection module 230 may be a second photoplethysmography, PPG detection module, which includes: a second light source and a second light detector, which may be disposed on a back side of the electronic device.

Further, the ECG detecting module 240 includes: a plurality of ECG detection electrodes, which may each be disposed on a back side of the electronic device; alternatively, a first ECG detection electrode of the plurality of ECG detection electrodes is disposed on a back side of the electronic device and a second ECG detection electrode of the plurality of ECG detection electrodes is disposed on a side of the electronic device.

In this embodiment of the application, the second light source and the second light detector in the second PPG detection module may be correspondingly disposed on the back of the smart watch to continuously detect the PPG signal at the wrist for a long time, which may facilitate the biometric information detection of the user. In addition, a first ECG detecting electrode in the plurality of ECG detecting electrodes is arranged on the back of the electronic device, and a second ECG detecting electrode is arranged on the side of the electronic device, so that the ECG signal at the wrist of the user and the ECG signal at the finger of the user can be respectively detected correspondingly, and the accuracy of the detection of the biological characteristic information is improved.

As an example, fig. 22 and 23 show bottom and top views of an electronic device, i.e., the back and front of the electronic device.

As shown in fig. 22 and 23, the electronic device according to the embodiment of the present application is a smart watch, where as shown in fig. 22, in the second detection component 202, the second light source 231 and the second light detector 232 in the second PPG detection module 230 are both disposed in a middle area of the back surface of the smart watch. When the user wears the smart watch, the second light source 231 and the second light detector 232 are directed towards the user's wrist and detect the PPG signal at the user's wrist.

Optionally, the second PPG detection module 230 may also include a plurality of second light sources 231 and/or a plurality of second light detectors 232. As an example, as shown in fig. 22, the plurality of light sources 231 are disposed around the second light detector 232 to provide a light signal with sufficient intensity to the surface of the wrist of the user, and the second light detector 232 can receive a light signal with sufficient intensity after being reflected or transmitted by the user, so as to improve the detection accuracy of the PPG signal.

Specifically, the functions of the second light source 231 and the second light detector 232 are the same as the functions of the first light source 212 and the first light detector 213, and the related technical solutions of the second light source 231 and the second light detector 232 can refer to the above description, and are not repeated herein. Further, as shown in fig. 22, a first ECG detecting electrode 241 in the ECG detecting module 240 is disposed on the back of the smart watch for contacting with the skin of the wrist of the user to detect the ECG signal of the user.

On this basis, as shown in fig. 23, the second ECG detecting electrode 242 in the ECG detecting module 240 is disposed at the side of the smart watch, and optionally, the second ECG electrode 242 may be disposed at the surface of the second key 102 at the side of the smart watch. Alternatively, the second ECG electrodes 242 may be directly disposed on the side of the smart watch, rather than being disposed in a button configuration.

Optionally, in this embodiment of the application, the first detecting part 201 may be disposed on a first side surface of the electronic device, if the first detecting part 201 is disposed in the first key 101, the first key 101 may be disposed on the first side surface of the electronic device, and the second ECG detecting electrode 242 may be disposed on a second side surface of the electronic device, where the first side surface and the second side surface are two opposite side surfaces of the electronic device, respectively.

For example, as shown in fig. 23, when the user presses the smart watch with his/her finger in the manner shown in fig. 14, his/her index finger presses the first button 101, and his/her thumb presses the second button 102 where the second ECG detection electrode is located. In a general application scenario, the smart watch may be worn on the wrist of the left hand of the user, and in this scenario, for the convenience of the user to press, the first button 101 may be disposed on a button on the right side surface of the watch, and the second button 102 may be disposed on a button on the left side surface of the watch. If the electronic device does not include the first key provided with the first detection component 201 in the embodiment of the present application, the second ECG detection electrode or the second key 102 where the second ECG detection electrode is located is provided on the key on the right side surface of the watch, but not on the key on the left side surface of the watch.

In the embodiment of the present application, when the user presses in this way, on the index finger side, the first detection component 201 at the first button 101 detects a relatively stable pressure signal, and collects a first PPG signal with relatively good quality, and at the same time, on the thumb side, the second ECG electrode 242 at the second button 102 and the first ECG electrode 241 on the back of the watch can simultaneously detect ECG signals. The first detection component 201 and the second detection component 202 can acquire a plurality of biological characteristic signals in the one-time pressing process of the finger of the user, so that the comprehensive detection of accurate biological characteristic information is realized, the structure is convenient for the user to operate, and the convenience of biological characteristic detection is improved and the user experience is improved.

Optionally, in the above application embodiment, the ECG signals detected by the second ECG electrode 242 and the first ECG electrode 241 are used together with the PPG signal detected by the second PPG detection module to detect biometric information such as blood pressure of the user. In other embodiments, the ECG signals detected by the second ECG electrode 242 and the first ECG electrode 241 can be used independently to detect biometric information such as heart rate of the user.

Of course, in the above-mentioned embodiment of the application, the second detecting component 202 may include only the ECG detecting module 240 or only the second pulse wave detecting module 230, in addition to the second pulse wave detecting module 230 and the ECG detecting module 240, or may also be other biometric detecting modules, such as a body temperature detecting module, a heart rate detecting module, or a blood oxygen detecting module, and the like, which is not particularly limited in this embodiment of the application.

The embodiment of the present application further provides an electronic device, which may include the detection apparatus for biometric information in any of the embodiments of the present application.

The electronic device includes, but is not limited to, a smart watch or a smart phone, which may be specifically any one of the electronic devices shown in fig. 1. Because the detection device that this application provided is portable and detection accuracy is high, and it is convenient for set up in wrist-watch and cell-phone through first button, so make the user can be through cell-phone or the wrist-watch that hand-carries can be convenient realization blood pressure detection anytime and anywhere, make blood pressure detection no longer confine medical equipment to, and then blood pressure detection can better popularization and serve people's daily life.

It should be understood that the specific examples in the embodiments of the present application are for the purpose of promoting a better understanding of the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application.

It should also be understood that the various embodiments described in this specification can be implemented individually or in combination, and the examples in this application are not limited thereto.

Unless otherwise defined, all technical and scientific terms used in the examples of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. As used in the examples of 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.

Those of ordinary skill in the art will appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed system and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processor, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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 (18)

1. The utility model provides a detection apparatus for biological characteristic information, is applied to electronic equipment, its characterized in that, electronic equipment includes first button, be provided with the cavity in the casing of first button, detection apparatus includes:

a first photoplethysmography detection module, the first photoplethysmography detection module comprising: a light transmissive cover plate, a first light source and a first light detector; the light-transmitting cover plate is reused as a partial shell of the first key and used for receiving the pressing of a user, the first light source and the first light detector are arranged in the cavity, the first light source is used for emitting optical signals of a target waveband to a pressing part of the user at the position of the light-transmitting cover plate, and the first light detector is used for receiving the optical signals reflected and/or transmitted by the pressing part to form a first pulse wave signal of the user;

the pressure sensing module is stacked with the first photoplethysmography detection module and located on one side of the first photoplethysmography detection module, which faces the inside of the electronic device, and is used for detecting a pressure signal applied to the light-transmitting cover plate by the user, the first pulse wave signal is a pulse wave signal corresponding to the pressure signal applied by the user, and the pressure signal and the first pulse wave signal are used for detecting first biological characteristic information of the user.

2. The detection apparatus of claim 1, wherein the first photoplethysmography detection module further comprises: the substrate is used for supporting the first light source and the first light detector, the support is arranged on the periphery of the substrate and used for supporting the light-transmitting cover plate, the support and the substrate are multiplexed to be a shell of the first key, and the light-transmitting cover plate, the support and the substrate form a cavity in the first key.

3. The detection device according to claim 2, further comprising:

the second structural part is fixedly connected to one side, facing the inside of the electronic equipment, of the first photoplethysmography detection module;

when the first photoplethysmography detection module is used for receiving the pressing of the user, the second structural part and the first photoplethysmography detection module are used for pressing the pressure sensing module in a linkage mode;

the pressure sensing module is used for detecting acting force between the pressure sensing module and the second structural part so as to detect the pressure signal.

4. The detection device according to claim 3, wherein the pressure sensing module comprises an elastic element and a strain gauge, wherein the strain gauge is arranged in a middle area of the surface of the elastic element;

when the first photoplethysmography detection module is used for receiving the pressing of the user, the second structural part and the first photoplethysmography detection module are used for being pressed on an edge area of the surface of the elastic element in a linkage mode together, so that the elastic element deforms, and the strain gauge is used for detecting the deformation to detect the pressure signal.

5. The detection device according to claim 2, further comprising:

the first structural component is arranged on one side, facing the interior of the electronic equipment, of the pressure sensing module;

when the first photoplethysmography detection module is used for receiving the pressing of the user, the pressure sensing module and the first photoplethysmography detection module are pressed on the first structural member in a linkage mode;

the pressure sensing module is used for detecting the acting force between the pressure sensing module and the first structural member so as to detect the pressure signal.

6. The detection device according to claim 5, further comprising:

the elastic module is arranged on one side, facing the interior of the electronic equipment, of the first structural component and is connected to the first structural component;

when the first photoplethysmography detection module is used for receiving the pressing of the user, the first structural member, the pressure sensing module and the first photoplethysmography detection module are pressed on the elastic module together in a linkage manner;

the elastic module is used for limiting the movable distance of the pressure sensing module within a preset range so as to limit the pressing pressure of the user within a pressure range which can be borne by the pressure sensing module.

7. The detection apparatus of any one of claims 1 to 6, wherein the first photoplethysmography detection module further comprises: the lens is arranged between the light-transmitting cover plate and the first light source and used for converging the optical signal of the first light source to the pressing part of the user.

8. The detection apparatus of any one of claims 1 to 6, wherein the first photoplethysmography detection module further comprises: a spacer positioned between the first light source and the first light detector to prevent light signals emitted by the first light source from directly entering the first light detector.

9. A detection apparatus according to any one of claims 1 to 6, wherein the first photoplethysmography detection module comprises: a plurality of said first light sources and/or a plurality of said first light detectors, wherein a plurality of said first light sources are configured to emit light signals of at least two different target wavelength bands.

10. The detection device according to any one of claims 1 to 6, further comprising:

an electrocardiogram detection module for detecting an electrocardiogram signal, the electrocardiogram signal being used for detecting second biometric information of the user.

11. The detection device as claimed in claim 10, wherein the electrocardiogram detection module comprises a plurality of electrocardiogram detection electrodes, and a part of the plurality of electrocardiogram detection electrodes are disposed at a side of the electronic apparatus.

12. The detection device according to claim 10, further comprising: and the temperature sensing module and the electrocardiogram detection module are arranged on the side surface of the electronic equipment together.

13. The detection device according to claim 10, further comprising:

the second photoplethysmography detection module is arranged on the back of the electronic equipment and used for detecting a second pulse wave signal of the user;

the second pulse wave signal and the electrocardiogram signal are used for detecting second biological characteristic information of the user; the first biological characteristic information and the second biological characteristic information are used for processing to obtain target biological characteristic information of the user.

14. The detecting device according to any one of claims 1 to 6, wherein the first key is disposed on a side surface or a back surface of the electronic apparatus.

15. The detection apparatus according to any one of claims 1 to 6, wherein the first key multiplexes function keys of the electronic device.

16. The device of claim 15, wherein the first key multiplexes a power key or a volume key on a side of the electronic device.

17. An electronic device, comprising:

the apparatus for detecting biometric information according to any one of claims 1 to 16.

18. The electronic device of claim 17, wherein the electronic device is a smart watch or a cell phone.

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