WO2022126531A1

WO2022126531A1 - Blood oxygen saturation measurement apparatus and electronic device

Info

Publication number: WO2022126531A1
Application number: PCT/CN2020/137316
Authority: WO
Inventors: 杨小强
Original assignee: 深圳市汇顶科技股份有限公司
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2022-06-23

Abstract

A blood oxygen saturation measurement apparatus and an electronic device. A blood oxygen saturation measurement apparatus (210) is disposed below a display screen (220), and comprises: a photoelectric conversion unit (201) and a measurement unit (202). The photoelectric conversion unit (201) comprises a first photosensitive region (241), and is used for receiving, by means of the first photosensitive region (241), first finger reflected light having a first wavelength and second finger reflected light having a second wavelength from above the display screen (220), and generating pulse data on the basis of the first finger reflected light and the second finger reflected light. The measurement unit (202) is used for measuring finger blood oxygen saturation on the basis of the pulse data. The apparatus improves the accuracy of finger blood oxygen saturation measurement.

Description

血氧饱和度检测装置和电子设备Blood oxygen saturation detection device and electronic equipment

技术领域technical field

本发明实施例涉及光电技术领域，尤其涉及一种血氧饱和度检测装置和电子设备。Embodiments of the present invention relate to the field of optoelectronic technology, and in particular, to a blood oxygen saturation detection device and electronic equipment.

背景技术Background technique

血氧饱和度是血液中被氧结合的氧合血红蛋白的容量占全部可结合的血红蛋白容量的百分比，即血液中血氧的浓度，它是呼吸循环的重要生理参数。氧合血红蛋白表示血液中被氧结合的血红蛋白。还原血红蛋白表示血液中未被氧结合的血红蛋白。Blood oxygen saturation is the percentage of the capacity of oxyhemoglobin combined with oxygen in the blood to the total capacity of hemoglobin that can be combined, that is, the concentration of blood oxygen in the blood, which is an important physiological parameter of the respiratory cycle. Oxyhemoglobin means hemoglobin in the blood that is bound by oxygen. Reduced hemoglobin means hemoglobin in the blood that is not bound by oxygen.

诸如智能手环和智能手表的可穿戴设备采用红外和红光交替方式采集脉搏信号，以计算上述血氧饱和度。但是，在现有技术中，在佩戴可穿戴设备的情况下贴合不理想时，血氧饱和度的检测准确度较差。Wearable devices such as smart bracelets and smart watches use infrared and red light alternately to collect pulse signals to calculate the above-mentioned blood oxygen saturation. However, in the prior art, when the wearable device is not fitted properly, the detection accuracy of blood oxygen saturation is poor.

发明内容SUMMARY OF THE INVENTION

有鉴于此，本发明实施例所解决的技术问题之一在于提供一种血氧饱和度检测装置和电子设备。In view of this, one of the technical problems solved by the embodiments of the present invention is to provide a blood oxygen saturation detection device and an electronic device.

根据本发明实施例的第一方面，提供了一种血氧饱和度检测装置，设置在显示屏下方，所述装置包括：光电转换单元，包括第一感光区域。所述光电转换单元通过所述第一感光区域接收来自所述显示屏上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于所述第一手指反射光线和所述第二手指反射光线，生成脉搏数据；检测单元，基于所述脉搏数据，检测手指血氧饱和度。According to a first aspect of the embodiments of the present invention, a blood oxygen saturation detection device is provided, which is arranged below a display screen, and the device includes: a photoelectric conversion unit, including a first photosensitive area. The photoelectric conversion unit receives reflected light from a first finger with a first wavelength and a second finger reflected light with a second wavelength from above the display screen through the first photosensitive area, and based on the reflection of the first finger The light and the second finger reflect the light to generate pulse data; the detection unit detects the blood oxygen saturation of the finger based on the pulse data.

根据本发明实施例的第二方面，提供了一种电子设备，所述电子设备包括：显示屏，以及根据第一方面所述的血氧饱和度检测装置，其设置在所述显示屏下方。According to a second aspect of the embodiments of the present invention, an electronic device is provided, the electronic device includes a display screen, and the blood oxygen saturation detection device according to the first aspect, which is disposed below the display screen.

在本发明实施例的方案中，由于显示屏的上方表面有利用手指的贴合，因此基于来自显示屏上方的第一手指反射光线和第二手指反射光线，能够生成准确的脉搏数据，从而提高了手指血氧饱和度的检测准确度。In the solution of the embodiment of the present invention, since the upper surface of the display screen is attached by fingers, accurate pulse data can be generated based on the reflected light of the first finger and the reflected light of the second finger from above the display screen, thereby improving the The detection accuracy of finger blood oxygen saturation is improved.

附图说明Description of drawings

后文将参照附图以示例性而非限制性的方式详细描述本发明实施例的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比值绘制的。附图中：Hereinafter, some specific embodiments of the embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

图1为一个典型示例的可穿戴设备的示意图；1 is a schematic diagram of a typical example of a wearable device;

图2A为本发明的一个实施例的血氧饱和度检测装置的示意性框图；2A is a schematic block diagram of a blood oxygen saturation detection device according to an embodiment of the present invention;

图2B为图2A的实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图；Fig. 2B is a schematic side view of the electronic device including the blood oxygen saturation detection device of the embodiment of Fig. 2A;

图2C为本发明的另一实施例的光电转换单元的感光区域的布置的示意图；2C is a schematic diagram of an arrangement of photosensitive regions of a photoelectric conversion unit according to another embodiment of the present invention;

图3A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图；3A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图3B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图；3B is a schematic plan view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图4A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图；4A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图4B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图；4B is a schematic plan view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图5A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图；5A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图5B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图；5B is a schematic plan view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图6A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图；6A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图6B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图；6B is a schematic plan view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention;

图7为本发明的另一实施例的血氧饱和度检测方法的示意性流程图；7 is a schematic flowchart of a blood oxygen saturation detection method according to another embodiment of the present invention;

图8为本发明的另一实施例的血氧饱和度检测方法的示意性流程图；以及FIG. 8 is a schematic flowchart of a blood oxygen saturation detection method according to another embodiment of the present invention; and

图9为本发明的另一实施例的电子设备的示意性框图。FIG. 9 is a schematic block diagram of an electronic device according to another embodiment of the present invention.

具体实施方式Detailed ways

下面结合本发明实施例附图进一步说明本发明实施例具体实现。The specific implementation of the embodiments of the present invention is further described below with reference to the accompanying drawings of the embodiments of the present invention.

图1为一个典型示例的可穿戴设备的示意图。诸如智能手环和智能手表的可穿戴设备采用红外和红光交替方式采集脉搏信号，以计算上述血氧饱和度。如图1所示，发光器件为红光光源和红外光光源，两者交替发出红光信号和红外光信号，照射到待检测的人体部位(例如，手腕等)，感光器件相应地采集反射信号。由于交替发出红光信号和红外光信号，红光和红外光采集到的脉搏信号不同步，这时如果可穿戴设备与待检测部位的贴合不理想时，感光器件感测到的脉搏信号受到变化的环境光的干扰影响，导致测得的血氧饱和度的检测准确度较差。FIG. 1 is a schematic diagram of a typical example of a wearable device. Wearable devices such as smart bracelets and smart watches use infrared and red light alternately to collect pulse signals to calculate the above-mentioned blood oxygen saturation. As shown in Figure 1, the light-emitting device is a red light source and an infrared light source, both of which alternately emit a red light signal and an infrared light signal, irradiating the body part to be detected (for example, the wrist, etc.), and the photosensitive device collects the reflected signal accordingly. . Since the red light signal and the infrared light signal are alternately emitted, the pulse signals collected by the red light and the infrared light are not synchronized. At this time, if the fit between the wearable device and the part to be detected is not ideal, the pulse signal sensed by the photosensitive device will be affected. The interference effect of changing ambient light results in poor detection accuracy of the measured blood oxygen saturation.

图2A为本发明的一个实施例的血氧饱和度检测装置的示意性框图，并且图2B为图2A的实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图。FIG. 2A is a schematic block diagram of an apparatus for detecting blood oxygen saturation according to an embodiment of the present invention, and FIG. 2B is a schematic side view of an electronic device including the apparatus for detecting blood oxygen saturation in the embodiment of FIG. 2A .

如图2A和图2B所示，血氧饱和度检测装置210设置在显示屏220下方，血氧饱和度检测装置210包括光电转换单元201和检测单元202。As shown in FIG. 2A and FIG. 2B , the blood oxygen saturation detection device 210 is disposed below the display screen 220 , and the blood oxygen saturation detection device 210 includes a photoelectric conversion unit 201 and a detection unit 202 .

应理解，文中的显示屏可以为电子设备的显示屏。电子设备包括但不限于：移动通信设备：这类设备的特点是具备移动通信功能，并且以提供话音、数据通信为主要目标。这类终端包括：智能手机(例如iPhone)、多媒体手机、功能性手机，以及低端手机等；超移动个人计算机设备：这类设备属于个人计算机的范畴，有计算和处理功能，一般也具备移动上网特性。这类终端包括：PDA、MID和UMPC设备等，例如iPad；便携式娱乐设备：这类设备可以显示和播放多媒体内容。该类设备包括：音频、视频播放器(例如iPod)，掌上游戏机，电子书，以及智能玩具和便携式车载导航设备；其他具有数据交互功能的电子设备。It should be understood that the display screen herein may be a display screen of an electronic device. Electronic equipment includes but is not limited to: mobile communication equipment: This type of equipment is characterized by having mobile communication functions, and its main goal is to provide voice and data communication. Such terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones, etc.; ultra-mobile personal computer equipment: such devices belong to the category of personal computers, with computing and processing functions, and generally with mobile Internet features. Such terminals include: PDAs, MIDs and UMPC devices, such as iPads; portable entertainment devices: such devices can display and play multimedia content. Such devices include: audio and video players (eg iPod), handheld game consoles, e-books, as well as smart toys and portable car navigation devices; other electronic devices with data interaction functions.

还应理解，文中的显示屏可以包括诸如有机电致发光显示器(Organic Light-Emitting Display,OLED)、有源矩阵有机发光二极体面板(Active Matrix/Organic Light Emitting Diode，AMOLED)、或者液晶显示器(Liquid Crystal Display，LCD)的显示器。对于LCD显示器而言，显示面板下方设置有背光模组，可以对背光模组进行诸如开孔处理或其他光学设计，得到显示屏上方的透光。It should also be understood that the display screen herein may include, for example, an organic electroluminescent display (Organic Light-Emitting Display, OLED), an Active Matrix/Organic Light Emitting Diode (AMOLED) panel, or a liquid crystal display (Liquid Crystal Display, LCD) display. For an LCD display, a backlight module is provided below the display panel, and the backlight module can be subjected to aperture processing or other optical designs to obtain light transmission above the display screen.

还应理解，血氧饱和度检测装置210可以在具有诸如心率检测功能的应用程序启动时执行血氧饱和度检测。在该应用程序的界面中，可以采用诸如特定颜色高亮显示特定部分区域等方式向用户提示手指放置区域，例如，手指按压区域。还可以针对手指放置区域，照射第一波长的光线或第二波长的光线中的至少一者。显示屏下方可以设置其他备用光源，例如，用于照射第一波长的光线或第二波长的光线中的至少一者。显示器的控制器在显示屏检测到该手指放置区域被遮挡使得具有匹配的贴合程度时，控制备用光源或显示屏执行上述的照射操作。显示器的控制器还可以在显示屏检测到该手指放置区域被遮挡使得具有匹配的贴合程度时，向血氧饱和度检测装置发送控制信号，控制信号指示血氧饱和度检测装置执行光电转换单元和检测单元中的至少一者的处理。例如，光电转换单元可以一直处于开启状态，显示器的控制器该手指放置区域被遮挡时向检测单元发送控制信号。It should also be understood that the blood oxygen saturation detection device 210 may perform blood oxygen saturation detection when an application program having a function such as heart rate detection is started. In the interface of the application program, the user may be prompted to place the finger on the area, for example, the finger pressing area, in a manner such as highlighting a specific partial area with a specific color. At least one of the light of the first wavelength or the light of the second wavelength may also be irradiated with respect to the finger placement area. Other backup light sources may be disposed below the display screen, for example, for irradiating at least one of the light of the first wavelength or the light of the second wavelength. The controller of the display controls the backup light source or the display screen to perform the above-mentioned irradiation operation when the display screen detects that the finger placement area is blocked so as to have a matching degree of fit. The controller of the display can also send a control signal to the blood oxygen saturation detection device when the display screen detects that the finger placement area is blocked so as to have a matching degree of fit, and the control signal instructs the blood oxygen saturation detection device to execute the photoelectric conversion unit. and processing of at least one of the detection units. For example, the photoelectric conversion unit may always be in an on state, and the controller of the display sends a control signal to the detection unit when the finger placement area is blocked.

光电转换单元201包括第一感光区域241。The photoelectric conversion unit 201 includes a first photosensitive region 241 .

应理解，光电转换单元可以通过诸如光电二极管的器件构成，例如，由单个光电二极管或光电二极管阵列组成。光电转换单元的感光区域可以为平面也可以为曲面，在平面图中，光电转换单元的感光区域可以形成圆形、矩形等，适配到电子设备的显示屏的下方。第一感光区域可以形成光电转换单元的感光区域中的全部或部分。该第一感光区域可以与上述手指放置区域的形状匹配。It should be understood that the photoelectric conversion unit may be constituted by a device such as a photodiode, eg, composed of a single photodiode or an array of photodiodes. The photosensitive area of the photoelectric conversion unit can be a plane or a curved surface. In a plan view, the photosensitive area of the photoelectric conversion unit can be formed into a circle, a rectangle, etc., and fit under the display screen of the electronic device. The first photosensitive region may form all or part of the photosensitive region of the photoelectric conversion unit. The first photosensitive area may match the shape of the above-mentioned finger placement area.

还应理解，光电转换单元的感光区域还可以包括用于指纹识别的第二感光区域。第一感光区域和第二感光区域可以形成光电转换单元的全部或部分感光区域。第一感光区域和第二感光区域可以为相邻区域，以增大光电转换单元的感光区域的利用效率。第一感光区域可以设置成分离区域，例如，第一感光区域可以设置在第二感光区域的两侧，换言之，由第二感光区域间隔开第一感光区域。也可以间隔布置多个第一感光区域和多个第二感光区域。It should also be understood that the photosensitive area of the photoelectric conversion unit may further include a second photosensitive area for fingerprint identification. The first photosensitive area and the second photosensitive area may form all or part of the photosensitive area of the photoelectric conversion unit. The first photosensitive area and the second photosensitive area may be adjacent areas, so as to increase the utilization efficiency of the photosensitive area of the photoelectric conversion unit. The first photosensitive regions may be arranged as separate regions, for example, the first photosensitive regions may be arranged on both sides of the second photosensitive regions, in other words, the first photosensitive regions are separated by the second photosensitive regions. A plurality of first photosensitive regions and a plurality of second photosensitive regions may also be arranged at intervals.

光电转换单元201通过第一感光区域241接收来自显示屏220上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于第一手指反射光线和第二手指反射光线，生成脉搏数据。The photoelectric conversion unit 201 receives the reflected light of the first finger with the first wavelength and the reflected light of the second finger with the second wavelength from above the display screen 220 through the first photosensitive area 241, and based on the reflected light of the first finger and the second finger Reflects light to generate pulse data.

应理解，第一波长与第二波长不同，第一波长可以小于第二波长。第一波长和第二波长中的任一者可以为可见光，也可以为不可见光。例如，第一波长可以处于红光波段，第二波长可以处于红外光波段。另外，第一手指反射光线可以通过第一光源照射形成，第二手指反射光线可以通过第二光源照射形成。相应地，可以对应于光源的位置布置第一感光区域。It should be understood that the first wavelength is different from the second wavelength, and the first wavelength may be smaller than the second wavelength. Either of the first wavelength and the second wavelength may be visible light or invisible light. For example, the first wavelength may be in the red light band and the second wavelength may be in the infrared light band. In addition, the reflected light of the first finger can be formed by irradiating the first light source, and the reflected light of the second finger can be formed by illuminating the second light source. Accordingly, the first photosensitive regions may be arranged corresponding to the positions of the light sources.

检测单元202，基于脉搏数据，检测手指血氧饱和度。The detection unit 202 detects the blood oxygen saturation of the finger based on the pulse data.

可选地，作为另一示例，光电转换单元201还包括第一感光区域242。光电转换单元201通过第二感光区域242接收来自显示屏220上方的第三手指反射光线，以进行指纹识别。应理解，第三手指反射光线的波长可以小于红光波段的波长。Optionally, as another example, the photoelectric conversion unit 201 further includes a first photosensitive region 242 . The photoelectric conversion unit 201 receives the reflected light from the third finger above the display screen 220 through the second photosensitive area 242 to perform fingerprint recognition. It should be understood that the wavelength of the light reflected by the third finger may be smaller than the wavelength of the red light band.

在本示例中，由于光电转换单元包括用于生成脉搏数据的第一感光区域和用于进行指纹识别的第二感光区域，第一手指反射光线、第二手指反射光线和第三手指反射光线均来自于显示屏的上方，提高了感光区域的利用效率，并且提高了血氧饱和度检测装置的检测效率。In this example, since the photoelectric conversion unit includes a first photosensitive area for generating pulse data and a second photosensitive area for fingerprint recognition, the reflected light from the first finger, the reflected light from the second finger, and the reflected light from the third finger are all From the top of the display screen, the utilization efficiency of the photosensitive area is improved, and the detection efficiency of the blood oxygen saturation detection device is improved.

此外，光电转换单元的周边可以布置有多个第二光源，在光电感光单元的感光区域中，第一感光区域布置在第二感光区域周围，以对应于多个第二光源的位置，第一光源可以为显示屏(例如，自发光显示屏)的对应于第一感光区域的部分。In addition, a plurality of second light sources may be arranged on the periphery of the photoelectric conversion unit. In the photosensitive area of the photoelectric photosensitive unit, the first photosensitive area is arranged around the second photosensitive area to correspond to the positions of the plurality of second light sources. The light source may be a portion of the display screen (eg, a self-luminous display screen) corresponding to the first photosensitive area.

在一个示例中，检测单元可以设置到电子设备的其他位置，例如，在显示屏的边缘或角落处设置在显示屏与光电转换单元之间，从而在保证光电转换单元与显示器之间的感光距离以保证检测感光的同时，减小电子设备的厚度。In one example, the detection unit can be arranged at other positions of the electronic device, for example, at the edge or corner of the display screen, between the display screen and the photoelectric conversion unit, so as to ensure the photosensitive distance between the photoelectric conversion unit and the display. In order to ensure the detection of photosensitivity while reducing the thickness of the electronic device.

在另一示例中，检测单元可以设置在光电转换单元下方或侧边，检测单元至少与光电转换单元一体封装成芯片或模组。In another example, the detection unit may be disposed below or on the side of the photoelectric conversion unit, and the detection unit is at least integrally packaged with the photoelectric conversion unit into a chip or a module.

在另一示例中，光电转换单元通过第二感光区域接收来自显示屏上方的第三手指反射光线，并且基于第三手指反射光线，生成指纹数据，装置还包括：指纹识别单元，基于指纹数据，进行指纹识别。In another example, the photoelectric conversion unit receives reflected light from a third finger above the display screen through the second photosensitive area, and generates fingerprint data based on the reflected light from the third finger. The apparatus further includes: a fingerprint identification unit, based on the fingerprint data, Perform fingerprint identification.

在另一示例中，检测单元和指纹识别单元均设置在光电转换单元下方或侧边，其中，光电转换单元、检测单元以及指纹识别单元一体封装成芯片或模组。In another example, the detection unit and the fingerprint identification unit are both disposed below or on the side of the photoelectric conversion unit, wherein the photoelectric conversion unit, the detection unit and the fingerprint identification unit are integrally packaged into a chip or a module.

在另一示例中，第三手指反射光线可以由第三光源照射形成。例如，第三光源与第一光源可以为显示屏的同一部分发射第三波长和第一波长的光线所形成的光源，由于在不增加部件的空间的情况下设置了多种光源。In another example, the reflected light of the third finger may be formed by illuminating the third light source. For example, the third light source and the first light source may be a light source formed by emitting light of the third wavelength and the first wavelength from the same part of the display screen, since multiple light sources are provided without increasing the space of the components.

具体而言，当用户可以在诸如手机的电子设备中启动诸如血氧检测应用程序或其他具有血氧检测功能的应用程序的界面。用户可以将手指按压到上述界面中的指纹感光区域。在一个示例中，可以采用软件程序控制点亮显示屏上方的指纹感光区域处的红色光斑，同时点亮屏下红外LED。在另一个示例中，可以交替点亮第一光源(例如，红色LED灯)和第二光源(例如，红外LED灯)。Specifically, when a user can start an interface such as a blood oxygen detection application or other application with a blood oxygen detection function in an electronic device such as a mobile phone. The user can press the finger to the fingerprint sensitive area in the above interface. In one example, a software program can be used to control the lighting of the red light spot at the fingerprint photosensitive area above the display screen, and at the same time, the infrared LED under the screen is lighted. In another example, a first light source (eg, a red LED light) and a second light source (eg, an infrared LED light) may be alternately lit.

在一个示例中，第一波长处于红光波段(600nm到805nm之间，例如，660nm)，第二波长处于红外光波段(大于850nm，例如，940nm)。从而实现了对生理组织有较好的穿透力，并且确保有足够的信号。此外，红光波段和红外光波段中的一者实现了对还原血红蛋白和氧合血红蛋白的吸收系数的一致，另一种波长的光对还原血红蛋白和氧合血红蛋白的吸收系数形成了较大的差异，提高了检测灵敏度。此外，红光波段和红外光波段实现了由于二极管波长存在的离散性引起的波长偏离后吸光系数变化不大的色光。In one example, the first wavelength is in the red band (between 600 nm and 805 nm, eg, 660 nm), and the second wavelength is in the infrared band (greater than 850 nm, eg, 940 nm). Thereby, better penetration into physiological tissue is achieved, and sufficient signal is ensured. In addition, one of the red light band and the infrared light band achieves the same absorption coefficient for reduced hemoglobin and oxyhemoglobin, and the other wavelength of light forms a larger difference in the absorption coefficient of reduced hemoglobin and oxyhemoglobin , improving the detection sensitivity. In addition, the red light band and the infrared light band realize the color light with little change in the absorption coefficient after the wavelength deviation caused by the dispersion of the diode wavelength.

在本发明的另一实现方式中，第一手指反射光线通过第一光源照射形成，第二手指反射光线通过第二光源照射形成。在本发明的另一实现方式中，检测单元具体用于：基于脉搏数据，提取对应于第一波长的脉搏信号以及对应于第二波长的脉搏信号；计算第一波长的脉搏信号和第二波长的脉搏信号各自的交直比例关系，交直比例关系指示信号交流分量与信号直流分量之间的比例；检测模块，根据各自的交直比例关系，检测手指血氧饱和度。In another implementation manner of the present invention, the reflected light of the first finger is formed by illuminating the first light source, and the reflected light of the second finger is formed by illuminating the second light source. In another implementation manner of the present invention, the detection unit is specifically configured to: extract the pulse signal corresponding to the first wavelength and the pulse signal corresponding to the second wavelength based on the pulse data; calculate the pulse signal of the first wavelength and the second wavelength The AC-DC proportional relationship of the pulse signal, which indicates the ratio between the AC component of the signal and the DC component of the signal; the detection module detects the blood oxygen saturation of the finger according to the respective AC-DC proportional relationship.

由于血氧饱和度是血液中被氧结合的氧合血红蛋白的容量占全部可结合的血红蛋白容量的百分比，因此通过交直比例关系检测手指血氧饱和度，提高了计算效率。Since the blood oxygen saturation is the percentage of the oxygen-bound oxyhemoglobin capacity in the blood to the total bindable hemoglobin capacity, the blood oxygen saturation of the finger is detected by the orthogonal proportional relationship, which improves the calculation efficiency.

具体而言，作为一个例子，基于脉搏数据，提取对应于第一波长的脉搏信号以及对应于第二波长的脉搏信号，可以包括：基于预设帧率，对脉搏数据进行采集，得到对应于第一波长的脉搏信号以及对应于第二波长的脉搏信号。作为一个例子，计算第一波长的脉搏信号和第二波长的脉搏信号各自的交直比例关系，可以包括：确定第一波长的脉搏信号和第二波长的脉搏信号分别基于预设帧率的平均信号特征；根据平均信号特征，计算第一波长的脉搏信号和第二波长的脉搏信号各自的交直比例关系。Specifically, as an example, extracting the pulse signal corresponding to the first wavelength and the pulse signal corresponding to the second wavelength based on the pulse data may include: collecting the pulse data based on the preset frame rate to obtain the pulse signal corresponding to the first wavelength A pulse signal of one wavelength and a pulse signal corresponding to a second wavelength. As an example, calculating the respective AC/DC proportional relationship between the pulse signal of the first wavelength and the pulse signal of the second wavelength may include: determining the average signal of the pulse signal of the first wavelength and the pulse signal of the second wavelength based on the preset frame rate respectively feature; according to the average signal feature, calculate the respective AC/DC proportional relationship between the pulse signal of the first wavelength and the pulse signal of the second wavelength.

进一步地，对于基于预设帧率对脉搏数据进行采集而言，可以按照固定帧率(例如，10HZ～1K)控制连续采集指纹数据。确定第一波长的脉搏信号和第二波长的脉搏信号分别基于预设帧率的平均信号特征，可以计算采样数据中的红光和红外波段的平均光学信号量，例如，一段时间内连续多帧手指按压数据的光学信号量呈现较强的心率的光电容积脉搏波描记(Photo Plethyamo Graphy，PPG)信号特征。可以根据上述信号特征，通过计算红光和红外波段的信号交直比，得到血氧饱和度。Further, for the collection of pulse data based on a preset frame rate, the fingerprint data can be continuously collected according to a fixed frame rate (for example, 10HZ˜1K). Determine the pulse signal of the first wavelength and the pulse signal of the second wavelength. Based on the average signal characteristics of the preset frame rate, the average optical signal amount of the red light and infrared bands in the sampled data can be calculated, for example, multiple consecutive frames within a period of time. The optical signal quantity of the finger pressing data presents a strong photoplethyamo Graphy (PPG) signal characteristic of the heart rate. According to the above signal characteristics, the blood oxygen saturation can be obtained by calculating the signal orthogonality ratio of the red light and the infrared band.

具体而言，血氧饱和度SPO2＝HbO2/(HbO2+Hb)*100％,其中，HbO2表示氧合血红蛋白；HB表示还原血红蛋白。当特定波长的光入射时，透射过人体组织的光能量可分为两部分：一部分是恒定的，包含肌肉、骨骼等非脉动的成分；另一部分为波动成分，由血管随心脏搏动而产生的收缩和舒张引起，主要反映动脉中HB和HbO2对光的吸收，因此可以选择两个光源得到血液中两种物质对该波长交流和直流部分以计算血氧。Specifically, blood oxygen saturation SPO2=HbO2/(HbO2+Hb)*100%, wherein HbO2 represents oxyhemoglobin; HB represents reduced hemoglobin. When light of a specific wavelength is incident, the light energy transmitted through human tissue can be divided into two parts: one part is constant, including non-pulsatile components such as muscles and bones; the other part is fluctuating components, which are generated by blood vessels with the heartbeat The contraction and relaxation mainly reflect the absorption of light by HB and HbO2 in the artery. Therefore, two light sources can be selected to obtain the AC and DC parts of the two substances in the blood to calculate the blood oxygen.

根据朗博比尔定律，光透射到介质会被介质吸收，吸收的比例和入射光的波长和光在介质中传播的光程相关。例如，单色入射光穿过均匀介质，且介质厚度为d后，则透射光强I和入射I0光强就有如下的关系。According to Rambo Beer's law, light transmitted into a medium will be absorbed by the medium, and the proportion of absorption is related to the wavelength of the incident light and the optical path of the light propagating in the medium. For example, after the monochromatic incident light passes through a uniform medium and the thickness of the medium is d, the transmitted light intensity I and the incident I0 light intensity have the following relationship.

I＝I0*e ^-LC (1) I=I0*e ^-LC (1)

其中，L表示介质对特定光波长的吸收系数；C表示介质的浓度大小；d表示光穿过介质的光程。Among them, L represents the absorption coefficient of the medium to a specific light wavelength; C represents the concentration of the medium; d represents the optical path of the light passing through the medium.

由于血液中的血红蛋白主要成分为还原血红蛋白(Hb)与氧合血红蛋白(Hbo2)，因此可以认为血液是一种浓度均匀的介质溶液，即，通过人体手指的入射光强为I，光接收器接收到的反射光强为I0，则可以得到以下公式。Since the main components of hemoglobin in blood are reduced hemoglobin (Hb) and oxyhemoglobin (Hbo2), it can be considered that blood is a medium solution with a uniform concentration, that is, the incident light intensity through the human finger is I, and the light receiver receives If the reflected light intensity is I0, the following formula can be obtained.

I＝I0*e ^-L0C0d0*e ^-LHbCHbd*e ^-LHbO2CHbo2d (2) I=I0*e ^-L0C0d0 *e ^-LHbCHbd *e ^-LHbO2CHbo2d (2)

其中，L0、C0和d0分别表示静脉血、肌肉以及皮肤等静态成分的光吸收系数之和、光吸收静态成分的浓度和穿透静态成分的光程。LHb、CHb和d分别表示动脉血液中的还原血红蛋白的光吸收系数、还原血红蛋白的浓度以及动脉光程。LHbo2、CHbo2以及d分别代动脉血液中的氧合血红蛋白的光吸收系数、氧合血红蛋白的浓度以及动脉光程。Among them, L0, C0 and d0 respectively represent the sum of light absorption coefficients of static components such as venous blood, muscle and skin, the concentration of light-absorbing static components and the optical path penetrating the static components. LHb, CHb and d represent the light absorption coefficient of reduced hemoglobin in arterial blood, the concentration of reduced hemoglobin, and the arterial optical path, respectively. LHbo2, CHbo2 and d represent the light absorption coefficient of oxyhemoglobin in arterial blood, the concentration of oxyhemoglobin and the arterial optical path, respectively.

人体心脏的搏动会引起动脉收缩和舒张，因此可以假设动脉收缩时的动脉光程为d1，接收到的反射光强为IDC，动脉舒张的光程d2，接收到的反射光强为IDC-IAC；且d2–d1＝△d。则存在如下关系：The pulsation of the human heart will cause arterial contraction and relaxation, so it can be assumed that the arterial light path during arterial contraction is d1, the received reflected light intensity is IDC, the arterial diastolic light path d2, and the received reflected light intensity is IDC-IAC ; and d2–d1=Δd. There is the following relationship:

IDC-IAC＝IDC*e ^-LHbCHb△d*e ^{-LHbO2CHbo2△d} (3) IDC-IAC=IDC*e ^-LHbCHb△d *e ^{-LHbO2CHbo2△d} (3)

由(3)可以推导出(4)：(4) can be deduced from (3):

ln[(IDC-IAC)/IDC]＝-(LHbCHb+LHbo2CHb02)*△d (4)ln[(IDC-IAC)/IDC]=-(LHbCHb+LHbo2CHb02)*△d (4)

由于交流分量相比于直流分量小很多，因此Since the AC component is much smaller than the DC component, so

ln[(IDC-IAC)/IDC]≈IAC/IDC (5)ln[(IDC-IAC)/IDC]≈IAC/IDC (5)

由(4)和(5)可以推导出(6)：(6) can be deduced from (4) and (5):

IAC/IDC＝＝-(LHbCHb+LHbo2CHb02)*△d (6)IAC/IDC==-(LHbCHb+LHbo2CHb02)*△d (6)

由于(6)公式中的△d为未知量，所以需要打两种不同波长的光分别入射，代入公式6，可以抵消△d，假设两束光的波长分别为λ1和λ2：Since Δd in the formula (6) is an unknown quantity, it is necessary to inject two different wavelengths of light into the formula 6, which can cancel Δd. Assume that the wavelengths of the two beams of light are λ1 and λ2 respectively:

λ1：Dλ1＝IAC_λ1/IDC_λ1＝-(LHb_λ1CHb+LHbo2_λ1CHb02)*△d(7)λ2：Dλ2＝IAC_λ2/IDC_λ2＝-(LHb_λ2CHb+LHbo2_λ2CHb02)*△d (8)λ1: Dλ1=IAC_λ1/IDC_λ1=-(LHb_λ1CHb+LHbo2_λ1CHb02)*△d(7)λ2: Dλ2=IAC_λ2/IDC_λ2=-(LHb_λ2CHb+LHbo2_λ2CHb02)*△d (8)

由于(7)和(8)两个公式等号两边相比得到(9)：Since the two equations (7) and (8) are compared on both sides of the equal sign, (9) is obtained:

Dλ1/Dλ2＝(LHb_λ1CHb+LHbo2_λ1CHb02)/(LHb_λ2CHb+LHbo2_λ2CHb02) (9)Dλ1/Dλ2=(LHb_λ1CHb+LHbo2_λ1CHb02)/(LHb_λ2CHb+LHbo2_λ2CHb02) (9)

因此，血氧饱和度计算如下：Therefore, the oxygen saturation is calculated as follows:

SpO2＝HbO2/(HbO2+Hb)*100％ (10)SpO2=HbO2/(HbO2+Hb)*100% (10)

由(9)和(10)推导出血氧饱和度为氧合血红蛋白浓度和氧合血红蛋白浓度与氧合血红蛋白浓度和的比值：The blood oxygen saturation is derived from (9) and (10) as the ratio of the oxyhemoglobin concentration and the oxyhemoglobin concentration to the sum of the oxyhemoglobin concentrations:

SpO2＝[LHb_λ2*(Dλ1/Dλ2)–LHb_λ1]/[(LHbO2_λ1–LHb_λ1)-(LHbO2_λ2–LHb_λ2)**(Dλ1/Dλ2)] (11)SpO2=[LHb_λ2*(Dλ1/Dλ2)–LHb_λ1]/[(LHbO2_λ1–LHb_λ1)-(LHbO2_λ2–LHb_λ2)**(Dλ1/Dλ2)] (11)

当λ2选择为850以后波段(可参考940nm波长)时，则LHbO2_λ2≈LHb_λ2：When λ2 is selected as the band after 850 (refer to the wavelength of 940nm), then LHbO2_λ2≈LHb_λ2:

SpO2＝[LHb_λ2*(Dλ1/Dλ2)–LHb_λ1]/(LHbO2_λ1–LHb_λ1) (12)SpO2=[LHb_λ2*(Dλ1/Dλ2)–LHb_λ1]/(LHbO2_λ1–LHb_λ1) (12)

其中，LHb_λ2、LHb_λ1和LHbO2_λ1为常数，因此血氧只和两个波段的交直比有关系。基于测量的660波段和940波段的PPG信号，量化出直流和交流成分，得到血氧饱和度。Among them, LHb_λ2, LHb_λ1 and LHbO2_λ1 are constants, so blood oxygen is only related to the A/D ratio of the two bands. Based on the measured PPG signals in the 660-band and 940-band, the DC and AC components were quantified to obtain the blood oxygen saturation.

在本发明的另一实现方式中，第一手指反射光线通过第一光源照射形成，第二手指反射光线通过第二光源照射形成。In another implementation manner of the present invention, the reflected light of the first finger is formed by illuminating the first light source, and the reflected light of the second finger is formed by illuminating the second light source.

由于不同的光源有利于控制发射光线的波长，因此有利于实现不同波长的手指反射光线。Since different light sources are beneficial to control the wavelength of emitted light, it is beneficial to realize finger reflection light of different wavelengths.

在本发明的另一实现方式中，第一手指反射光线和第二手指反射光线的混合手指反射光线通过第一光源和第二光源同时照射手指形成。第一感光区域包括第一子感光区域和第二子感光区域，第一子感光区域和第二子感光区域上方分别设置有选择第一波长的第一滤波器和选择第二波长的第二滤波器。In another implementation manner of the present invention, the mixed finger reflected light of the first finger reflected light and the second finger reflected light is formed by simultaneously illuminating the finger with the first light source and the second light source. The first photosensitive area includes a first sub-photosensitive area and a second sub-photosensitive area, and a first filter for selecting a first wavelength and a second filter for selecting a second wavelength are respectively set above the first sub-photosensitive area and the second sub-photosensitive area device.

由于第一子感光区域和第二子感光区域上方分别设置有选择第一波长的第一滤波器和选择第二波长的第二滤波器，因此透过第一滤波器和第二滤波器可以获得第一波长的光线和第二波长的光线，从而对不同波长的光线实现了可靠的分离。图2C示出了本发明的另一实施例的光电转换单元的感光区域的布置。Since a first filter for selecting a first wavelength and a second filter for selecting a second wavelength are respectively disposed above the first sub-photosensitive area and the second sub-photosensitive area, the first filter and the second filter can obtain The light of the first wavelength and the light of the second wavelength are thus reliably separated for the light of different wavelengths. FIG. 2C shows an arrangement of photosensitive regions of a photoelectric conversion unit according to another embodiment of the present invention.

在另一示例中，第二感光区域上方可以设置有选择第三波长的第三滤波器。第三手指反射光线可以通过第三光源照射形成。第一手指反射光线、第二手指反射光线和第三手指反射光线的混合手指反射光线可以通过第一光源、第二光源和第三光源同时照射手指形成。第一光源、第二光源与第三光源的波长可以彼此不同。In another example, a third filter for selecting a third wavelength may be disposed above the second photosensitive region. The reflected light of the third finger may be formed by irradiating the third light source. The mixed finger reflected light of the first finger reflected light, the second finger reflected light and the third finger reflected light can be formed by simultaneously irradiating the finger with the first light source, the second light source and the third light source. The wavelengths of the first light source, the second light source and the third light source may be different from each other.

在本发明的另一实现方式中，第一光源为显示屏的至少一部分，显示屏为自发光显示屏，第二光源设置在显示屏下方。In another implementation manner of the present invention, the first light source is at least a part of the display screen, the display screen is a self-luminous display screen, and the second light source is arranged below the display screen.

由于利用了自发光显示屏的一部分作为第一光源，因此提高了部件的利用效率，换言之，节省了增加额外的第一光源的空间。Since a part of the self-luminous display screen is used as the first light source, the utilization efficiency of components is improved, in other words, the space for adding additional first light sources is saved.

在本发明的另一实现方式中，第一光源和第二光源均设置在显示屏的下方。In another implementation manner of the present invention, both the first light source and the second light source are arranged below the display screen.

由于第一光源和第二光源均设置在显示屏的下方，因此实现了有利于将血氧饱和度检测装置相关的功能集成到电子设备中。Since both the first light source and the second light source are arranged below the display screen, it is advantageous to integrate the functions related to the blood oxygen saturation detection device into the electronic device.

具体而言，对于现有OLED或AMOLED而言，可以利用诸如显示屏自发光的红色光斑光源(605～700nm)作为第一光源照射手指，连续采集多帧脉搏数据，实现红光(包括但不限于660nm波段)脉搏信号的采集。Specifically, for the existing OLED or AMOLED, a red spot light source (605-700 nm) such as the self-illumination of the display screen can be used as the first light source to illuminate the finger, and multiple frames of pulse data can be continuously collected to realize red light (including but not Limited to 660nm band) pulse signal acquisition.

通过增加诸如屏下红外光灯的第二光源来照射手指，连续采集多帧数据，实现了红外(包括但不限于940nm波段)波段脉搏信号采集。By adding a second light source such as an infrared light under the screen to illuminate the finger, and continuously collecting multiple frames of data, pulse signal acquisition in the infrared (including but not limited to 940nm band) band is achieved.

由于指纹图像传感器可以直接接收红光和红外，容易造成室外强光环境指纹图像区域过曝光，因此在指纹图像传感器中增加两个区域分别用于透过红光波段(包括但不限于660nm波段)和红外波段(包括但不限于940nm波段)，其余区域用于可见光指纹成像。Since the fingerprint image sensor can directly receive red light and infrared light, it is easy to cause overexposure of the fingerprint image area in an outdoor strong light environment. Therefore, two areas are added to the fingerprint image sensor for transmitting the red light band (including but not limited to the 660nm band) and infrared band (including but not limited to 940nm band), and the remaining regions are used for visible light fingerprint imaging.

可以在不影响手机外观的情况下，通过屏下红外补光，实现红外波段从显示屏下方诸如红外LED灯的第二光源产生，穿透显示屏，进入手指，再透过手指并携带脉搏信号，进入光电转换单元(例如，指纹芯片)的特定区域，提取红外波段(包括但不限于940nm波段)的脉搏信号。Without affecting the appearance of the mobile phone, the infrared band can be generated from the second light source such as infrared LED lights under the display screen through the infrared supplementary light under the screen, penetrate the display screen, enter the finger, and then pass through the finger and carry the pulse signal. , enter a specific area of the photoelectric conversion unit (for example, a fingerprint chip), and extract the pulse signal in the infrared band (including but not limited to the 940nm band).

可以通过显示屏点亮红色光斑在不增硬件成本的情况下实现红光波段(包括但不限于660nm波段)穿透手指皮肤从而携带有脉搏信号，反射进入光电转换单元(例如，指纹芯片)的特定区域，提取红光波段(包括但不限于660nm波段)的脉搏信号。The red light spot can be lit through the display screen to realize that the red light band (including but not limited to the 660nm band) penetrates the skin of the finger so as to carry the pulse signal without increasing the cost of hardware, which is reflected into the photoelectric conversion unit (for example, the fingerprint chip). In a specific area, the pulse signal in the red light band (including but not limited to the 660nm band) is extracted.

可以诸如显示屏红色光斑的第一光源和诸如屏下红外LED灯的第二光源同时打光，用于采集不同频段的脉搏信号。The first light source, such as the red spot of the display screen, and the second light source, such as the infrared LED light under the screen, can be illuminated at the same time to collect pulse signals of different frequency bands.

在本发明的另一实现方式中，第一手指反射光线和第二手指反射光线通过第一光源和第二光源交替照射手指形成。In another implementation manner of the present invention, the reflected light from the first finger and the reflected light from the second finger are formed by alternately irradiating the finger with the first light source and the second light source.

由于第一手指反射光线和第二手指反射光线通过第一光源和第二光源交替照射手指形成，因此采用同一感光区域实现了不同波长关系的采集。Since the reflected light from the first finger and the reflected light from the second finger are formed by alternately irradiating the finger with the first light source and the second light source, the same photosensitive area is used to realize the collection of different wavelength relationships.

具体而言，对于OLED或AMOLED而言，增加屏下红外光灯和红光灯交替打光照射手指，连续采集多帧数据，实现红外波段(包括但不限于940nm波段)脉搏信号的采集和红光波段(包括但不限于660nm波段)脉搏信号的采集。Specifically, for OLED or AMOLED, the infrared light and red light under the screen are added to illuminate the finger alternately, and multiple frames of data are continuously collected to realize the collection of pulse signals in the infrared band (including but not limited to the 940nm band) and the red light. The collection of pulse signals in the optical waveband (including but not limited to the 660nm waveband).

在一个示例中，可以在指纹传感器上预留第一感光区域，用于检测红光和红外波段，诸如第二感光区域的其他区域用于指纹检测。In one example, a first photosensitive area may be reserved on the fingerprint sensor for detecting red light and infrared wavelength bands, and other areas, such as the second photosensitive area, may be used for fingerprint detection.

可以在不影响手机外观的情况下，通过屏下红外补光，实现红外波段从屏幕下方LED灯产生，穿透屏幕，进入手指，再透过手指并携带脉搏信号，进入光电转换单元(例如，指纹芯片)的特定区域，提取红外波段(包括但不限于940nm波段)的脉搏信号。Without affecting the appearance of the mobile phone, the infrared band can be generated from the LED light below the screen through the infrared supplementary light under the screen, penetrate the screen, enter the finger, and then pass through the finger and carry the pulse signal to enter the photoelectric conversion unit (for example, fingerprint chip) to extract pulse signals in the infrared band (including but not limited to the 940nm band).

可以通过诸如屏下红光LED灯等设置在显示屏下方的红光光源的补光(包括但不限于660nm波段)穿透屏幕，进入手指携带脉搏信号，继而反射进入光电转换单元(例如，指纹芯片)的特定区域，提取红光波段(可参考660nm波段，但不限于此波段)的脉搏信号。The red light source (including but not limited to the 660nm band) can penetrate the screen through the red light source (including but not limited to the 660nm band), such as the red LED light under the screen, and enter the finger to carry the pulse signal, which is then reflected into the photoelectric conversion unit (for example, fingerprints). A specific area of the chip) to extract the pulse signal in the red light band (refer to the 660nm band, but not limited to this band).

诸如屏下红色LED灯的第一光源和诸如红外LED灯的第二光源可以交替打光，用于采集不同频段的脉搏信号The first light source, such as the red LED light under the screen, and the second light source, such as the infrared LED light, can be alternately illuminated to collect pulse signals of different frequency bands

由于在诸如室外阳光照射等场景解锁会造成指纹图像区域过曝光、图像指纹纹路损失以及引起的室外强光指纹解锁困难等问题，会阻断部分红光和红外波段的感应，因此第二感光区域(例如，指纹图像传感器的感光区域)需要避免，。在指纹图像传感器上增加第一感光区域用于透过红光波段(包括但不限于660nm波段)和红外波段(包括但不限于940nm波段)的光，诸如第二感光区域的其余区域用于指纹成像，既能通过第二感光区域的指纹识别解决室外强光解锁困难问题，又能通过第一感光区域实现血氧检测。Since unlocking in scenes such as outdoor sunlight exposure will cause overexposure of the fingerprint image area, loss of image fingerprint lines, and difficulty in unlocking fingerprints caused by outdoor strong light, it will block the induction of part of the red light and infrared bands, so the second photosensitive area (for example, the photosensitive area of a fingerprint image sensor) needs to be avoided. A first photosensitive area is added to the fingerprint image sensor for transmitting light in the red band (including but not limited to 660nm band) and infrared band (including but not limited to 940nm band), and the rest of the area such as the second photosensitive area is used for fingerprints Imaging, not only can solve the difficult problem of outdoor strong light unlocking through fingerprint recognition in the second photosensitive area, but also realize blood oxygen detection through the first photosensitive area.

图3A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图。血氧饱和度检测装置340设置在显示屏320下方，血氧饱和度检测装置340包括：3A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention. The blood oxygen saturation detection device 340 is arranged below the display screen 320, and the blood oxygen saturation detection device 340 includes:

光电转换单元，包括第一感光区域341和第二感光区域342，其中，光电转换单元通过第一感光区域341接收来自显示屏320上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于第一手指反射光线和第二手指反射光线，生成脉搏数据，其中，光电转换单元通过第二感光区域342接收来自显示屏320上方的第三手指反射光线，以进行指纹识别。检测单元，基于脉搏数据，检测手指血氧饱和度。The photoelectric conversion unit includes a first photosensitive area 341 and a second photosensitive area 342, wherein the photoelectric conversion unit receives the reflected light from the first finger with the first wavelength and the second wavelength from above the display screen 320 through the first photosensitive area 341. The second finger reflects light from the second finger, and pulse data is generated based on the reflected light from the first finger and the reflected light from the second finger, wherein the photoelectric conversion unit receives the reflected light from the third finger above the display screen 320 through the second photosensitive area 342 to obtain pulse data. Perform fingerprint identification. The detection unit, based on the pulse data, detects the blood oxygen saturation of the finger.

例如，第一手指反射光线、第二手指反射光线和第三手指反射光线可以来自手指310。For example, the first finger reflected light, the second finger reflected light and the third finger reflected light may come from finger 310 .

图3B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图。在本发明实施例中，第一手指反射光线通过第一光源照射形成，第二手指反射光线通过第二光源照射形成。第一手指反射光线和第二手指反射光线通过第一光源和第二光源交替照射手指310形成。第一光源321为显示屏320的至少一部分，例如，显示屏为自发光显示屏，第二光源330设置在显示屏320下方。在另一示例中，第一光源和第二光源均设置在显示屏320的下方。3B is a schematic plan view of an electronic device including a blood oxygen saturation detection apparatus according to another embodiment of the present invention. In the embodiment of the present invention, the reflected light of the first finger is formed by illuminating the first light source, and the reflected light of the second finger is formed by illuminating the second light source. The reflected light from the first finger and the reflected light from the second finger are formed by alternately irradiating the finger 310 with the first light source and the second light source. The first light source 321 is at least a part of the display screen 320 , for example, the display screen is a self-luminous display screen, and the second light source 330 is disposed below the display screen 320 . In another example, both the first light source and the second light source are disposed below the display screen 320 .

图4A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图。血氧饱和度检测装置440设置在显示屏420下方，血氧饱和度检测装置440包括：4A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention. The blood oxygen saturation detection device 440 is arranged below the display screen 420, and the blood oxygen saturation detection device 440 includes:

光电转换单元，包括第一感光区域441和第二感光区域442，其中，光电转换单元通过第一感光区域441接收来自显示屏420上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于第一手指反射光线和第二手指反射光线，生成脉搏数据，其中，光电转换单元通过第二感光区域442接收来自显示屏420上方的第三手指反射光线，以进行指纹识别；检测单元，基于脉搏数据，检测手指血氧饱和度。The photoelectric conversion unit includes a first photosensitive area 441 and a second photosensitive area 442, wherein the photoelectric conversion unit receives the reflected light from the first finger with the first wavelength and the second wavelength from above the display screen 420 through the first photosensitive area 441. The second finger reflects light from the second finger, and pulse data is generated based on the reflected light from the first finger and the reflected light from the second finger, wherein the photoelectric conversion unit receives the reflected light from the third finger above the display screen 420 through the second photosensitive area 442 to Perform fingerprint recognition; detection unit, based on pulse data, detects the blood oxygen saturation of the finger.

例如，第一手指反射光线、第二手指反射光线和第三手指反射光线可以来自手指410。For example, the first finger reflected light, the second finger reflected light and the third finger reflected light may come from finger 410 .

图4B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图。第一手指反射光线通过第一光源421照射形成，第二手指反射光线通过第二光源430照射形成。在另一示例中，第一手指反射光线和第二手指反射光线的混合手指反射光线通过第一光源421和第二光源430同时照射手指410形成。第一感光区域包括第一子感光区域4411和第二子感光区域4412，第一子感光区域4411和第二子感光区域4412上方分别设置有选择第一波长的第一滤波器和选择第二波长的第二滤波器。在一个示例中，第一光源为显示屏的至少一部分，显示屏为自发光显示屏，第二光源设置在显示屏下方。4B is a schematic plan view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention. The reflected light of the first finger is formed by irradiating the first light source 421 , and the reflected light of the second finger is formed by irradiating the second light source 430 . In another example, the mixed finger-reflected light of the first finger-reflected light and the second finger-reflected light is formed by irradiating the finger 410 with the first light source 421 and the second light source 430 at the same time. The first photosensitive region includes a first sub-sensitivity region 4411 and a second sub-sensitivity region 4412. Above the first sub-sensitivity region 4411 and the second sub-sensitivity region 4412, a first filter for selecting the first wavelength and a second wavelength for selecting the the second filter. In one example, the first light source is at least a part of the display screen, the display screen is a self-luminous display screen, and the second light source is disposed below the display screen.

图5A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图。血氧饱和度检测装置540设置在显示屏520下方，血氧饱和度检测装置540包括：5A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention. The blood oxygen saturation detection device 540 is arranged below the display screen 520, and the blood oxygen saturation detection device 540 includes:

光电转换单元，包括第一感光区域541和第二感光区域542，其中，光电转换单元通过第一感光区域541接收来自显示屏520上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于第一手指反射光线和第二手指反射光线，生成脉搏数据，其中，光电转换单元通过第二感光区域542接收来自显示屏520上方的第三手指反射光线，以进行指纹识别；检测单元，基于脉搏数据，检测手指血氧饱和度。The photoelectric conversion unit includes a first photosensitive area 541 and a second photosensitive area 542, wherein the photoelectric conversion unit receives the reflected light from the first finger with the first wavelength and the second wavelength from above the display screen 520 through the first photosensitive area 541. The second finger reflects light from the second finger, and pulse data is generated based on the reflected light from the first finger and the reflected light from the second finger, wherein the photoelectric conversion unit receives the reflected light from the third finger above the display screen 520 through the second photosensitive area 542 to generate pulse data. Perform fingerprint recognition; detection unit, based on pulse data, detects the blood oxygen saturation of the finger.

例如，第一手指反射光线、第二手指反射光线和第三手指反射光线可以来自手指510。For example, the first finger reflected light, the second finger reflected light and the third finger reflected light may come from finger 510 .

图5B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图。第一手指反射光线通过第一光源531照射形成，第二手指反射光线通过第二光源532照射形成。第一手指反射光线和第二手指反射光线通过第一光源531和第二光源532交替照射手指510形成。第一光源531和第二光源532均设置在显示屏的下方。5B is a schematic plan view of an electronic device including a blood oxygen saturation detection apparatus according to another embodiment of the present invention. The reflected light of the first finger is formed by the irradiation of the first light source 531 , and the reflected light of the second finger is formed by the irradiation of the second light source 532 . The reflected light from the first finger and the reflected light from the second finger are formed by alternately irradiating the finger 510 with the first light source 531 and the second light source 532 . Both the first light source 531 and the second light source 532 are arranged below the display screen.

应理解，第一光源531和第二光源532的布置位置可以为任意的，例如，可以布置在指按压区域或感光区域的周边。在一个示例中，在平面图中，第二光源532(例如，如实心圆圈所示)和第一光源531可以设置在手指按压区域或感光区域的两侧。在另一示例中，在平面图中，第二光源532(例如，如虚心圆圈所示)和第一光源531可以布置在手指按压区域或感光区域的同侧，或者，其他周边位置。It should be understood that the arrangement positions of the first light source 531 and the second light source 532 may be arbitrary, for example, they may be arranged at the periphery of the finger pressing area or the photosensitive area. In one example, in a plan view, the second light source 532 (eg, shown as a solid circle) and the first light source 531 may be disposed on both sides of the finger pressing area or the photosensitive area. In another example, in a plan view, the second light source 532 (eg, as shown by an open circle) and the first light source 531 may be arranged on the same side of the finger pressing area or photosensitive area, or other peripheral locations.

图6A为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性侧视图。血氧饱和度检测装置640设置在显示屏620下方，血氧饱和度检测装置640包括：6A is a schematic side view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention. The blood oxygen saturation detection device 640 is arranged below the display screen 620, and the blood oxygen saturation detection device 640 includes:

光电转换单元，包括第一感光区域641和第二感光区域642。光电转换单元通过第一感光区域641接收来自显示屏上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于第一手指反射光线和第二手指反射光线，生成脉搏数据，其中，光电转换单元通过第二感光区域642接收来自显示屏上方的第三手指反射光线，以进行指纹识别；检测单元，基于脉搏数据，检测手指血氧饱和度。The photoelectric conversion unit includes a first photosensitive area 641 and a second photosensitive area 642 . The photoelectric conversion unit receives the reflected light of the first finger with the first wavelength and the reflected light of the second finger with the second wavelength from above the display screen through the first photosensitive area 641, and based on the reflected light of the first finger and the reflected light of the second finger , generates pulse data, wherein the photoelectric conversion unit receives the reflected light from the third finger above the display screen through the second photosensitive area 642 for fingerprint recognition; the detection unit detects the blood oxygen saturation of the finger based on the pulse data.

例如，第一手指反射光线、第二手指反射光线和第三手指反射光线可以来自手指610。For example, the first finger reflected light, the second finger reflected light and the third finger reflected light may come from finger 610 .

图6B为本发明的另一实施例的包括血氧饱和度检测装置的电子设备的示意性平面图。第一手指反射光线通过第一光源631照射形成，第二手指反射光线通过第二光源632照射形成。第一手指反射光线和第二手指反射光线的混合手指反射光线通过第一光源和第二光源同时照射手指610形成。第一感光区域包括第一子感光区域6411和第二子感光区域6412，第一子感光区域6411和第二子感光区域6412上方分别设置有选择第一波长的第一滤波器和选择第二波长的第二滤波器。第一光源和第二光源均设置在显示屏的下方。6B is a schematic plan view of an electronic device including a blood oxygen saturation detection device according to another embodiment of the present invention. The reflected light of the first finger is formed by the irradiation of the first light source 631 , and the reflected light of the second finger is formed by the irradiation of the second light source 632 . The mixed finger reflected light of the first finger reflected light and the second finger reflected light is formed by simultaneously illuminating the finger 610 with the first light source and the second light source. The first photosensitive region includes a first sub-sensitivity region 6411 and a second sub-sensitivity region 6412. Above the first sub-sensitivity region 6411 and the second sub-sensitivity region 6412, a first filter for selecting the first wavelength and a second wavelength for selecting the the second filter. Both the first light source and the second light source are arranged below the display screen.

应理解，第一光源631和第二光源632的布置位置可以为任意的，例如，可以布置在指按压区域或感光区域的周边。在一个示例中，在平面图中，第二光源632(例如，如实心圆圈所示)和第一光源631可以设置在手指按压区域或感光区域的两侧。在另一示例中，在平面图中，第二光源632(例如，如虚心圆圈所示)和第一光源631可以布置在手指按压区域或感光区域的同侧，或者，其他周边位置。It should be understood that the arrangement positions of the first light source 631 and the second light source 632 may be arbitrary, for example, they may be arranged at the periphery of the finger pressing area or the photosensitive area. In one example, in a plan view, the second light source 632 (eg, shown as a solid circle) and the first light source 631 may be disposed on both sides of the finger pressing area or the photosensitive area. In another example, in a plan view, the second light source 632 (eg, as shown by an open circle) and the first light source 631 may be arranged on the same side of the finger pressing area or photosensitive area, or other peripheral locations.

图7为本发明的另一实施例的血氧饱和度检测方法的示意性流程图。如图所示，FIG. 7 is a schematic flowchart of a blood oxygen saturation detection method according to another embodiment of the present invention. as the picture shows,

在步骤S701中，用户启动诸如心率检测的血氧饱和度检测功能。具体而言，用户选择启动血氧饱和度检测功能后，在应用程序的界面中提高用户的按压位置。In step S701, the user activates a blood oxygen saturation detection function such as heart rate detection. Specifically, after the user chooses to activate the blood oxygen saturation detection function, the user's pressing position is increased in the interface of the application program.

在步骤S702中，用户按压脉搏采集区域。具体而言，用户可以根据提示的按压位置，将手指按压在显示屏上。脉搏采集区域可以指纹采集区域相同，也可以与指纹采集区域不同。In step S702, the user presses the pulse collection area. Specifically, the user can press the finger on the display screen according to the prompted pressing position. The pulse collection area may be the same as the fingerprint collection area, or may be different from the fingerprint collection area.

在步骤S703中，点亮指纹感光区域光斑和屏下红外光光源。具体而言，当用户按压手指到指纹感光区域后，随即亮起指纹感光区域光斑和点亮红外LED灯，开始脉搏数据采集。In step S703, the light spot in the fingerprint photosensitive area and the infrared light source under the screen are lit. Specifically, when the user presses the finger to the fingerprint photosensitive area, the light spot in the fingerprint photosensitive area and the infrared LED light are turned on immediately, and pulse data collection starts.

在步骤S704中，光学指纹信号和/或图像连续采集。具体而言，红光波段和红外波段的诸如心率PPG特征信号的脉搏信号由连续采集的光学指纹信号或者图像数据中提取。In step S704, optical fingerprint signals and/or images are continuously collected. Specifically, pulse signals such as heart rate PPG characteristic signals in the red and infrared bands are extracted from continuously collected optical fingerprint signals or image data.

在步骤S705中，判断采集帧数是否大于N(预设帧数阈值)，如果为是，则进入到步骤S706中；如果为否，则进入到步骤S707中。In step S705, it is judged whether the number of captured frames is greater than N (preset frame number threshold), if yes, go to step S706; if not, go to step S707.

在步骤S706中，判断第一波长信号和第二波长信号质量是否稳定，如果为是，则进入到步骤S708中，如果为否，则进入到步骤S707中。In step S706, it is judged whether the quality of the first wavelength signal and the second wavelength signal is stable, if yes, go to step S708, if no, go to step S707.

在步骤S707中，判断用户是否在保持按压，如果为是，则进入到步骤S704中，如果为否，则进入到步骤S709中。In step S707, it is judged whether the user is keeping pressing, if yes, go to step S704, if no, go to step S709.

在步骤S708中，基于诸如心率PPG特征信号的脉搏信号，计算血氧饱和度。具体而言，通过红光波段和红外波段的脉搏信号，交流和直流分量比值，得到当前被测人员的血氧饱和度。In step S708, the blood oxygen saturation is calculated based on the pulse signal such as the heart rate PPG characteristic signal. Specifically, the current blood oxygen saturation of the tested person is obtained through the pulse signal in the red light band and the infrared band, and the ratio of the AC and DC components.

在步骤S709中，进行用户界面相关动作的处理。In step S709, processing of actions related to the user interface is performed.

图8为本发明的另一实施例的血氧饱和度检测方法的示意性流程图。FIG. 8 is a schematic flowchart of a blood oxygen saturation detection method according to another embodiment of the present invention.

在步骤S801中，用户启动诸如心率检测的血氧饱和度检测功能。具体而言，用户选择启动诸如心率检测的血氧饱和度检测功能后，在应用程序的界面中提高用户的按压位置。In step S801, the user activates a blood oxygen saturation detection function such as heart rate detection. Specifically, after the user chooses to activate the blood oxygen saturation detection function such as heart rate detection, the user's pressing position is increased in the interface of the application program.

在步骤S802中，用户按压脉搏采集区域。具体而言，用户可以根据提示的按压位置，将手指按压在显示屏上。脉搏采集区域可以指纹采集区域相同，也可以与指纹采集区域不同。In step S802, the user presses the pulse collection area. Specifically, the user can press the finger on the display screen according to the prompted pressing position. The pulse collection area may be the same as the fingerprint collection area, or may be different from the fingerprint collection area.

在步骤S803中，点亮指纹感光区域光斑和屏下红外光光源。具体而言，当用户按压手指到指纹感光区域后，随即亮起指纹感光区域光斑和点亮红外LED灯，开始脉搏数据采集。In step S803, the light spot in the fingerprint photosensitive area and the infrared light source under the screen are lit. Specifically, when the user presses the finger to the fingerprint photosensitive area, the light spot in the fingerprint photosensitive area and the infrared LED light are turned on immediately, and pulse data collection starts.

在步骤S804中，点亮红光光源采集一帧数据后，关闭红光光源，并且点亮红外光光源。In step S804, after the red light source is turned on to collect one frame of data, the red light source is turned off, and the infrared light source is turned on.

在步骤S805中，点亮红外光光源采集一帧数据后，关闭红外光光源，并且点亮红光光源。In step S805, after the infrared light source is turned on to collect one frame of data, the infrared light source is turned off, and the red light source is turned on.

在步骤S806中，判断采集帧数是否大于N(预设帧数阈值)，如果为是，则进入到步骤S807中；如果为否，则进入到步骤S808中。In step S806, it is judged whether the number of captured frames is greater than N (preset frame number threshold), if yes, go to step S807; if not, go to step S808.

在步骤S807中，判断第一波长信号和第二波长信号质量是否稳定，如果为是，则进入到步骤S809中，如果为否，则进入到步骤S808中。In step S807, it is judged whether the quality of the first wavelength signal and the second wavelength signal is stable, if yes, go to step S809, if no, go to step S808.

在步骤S808中，判断用户是否在保持按压，如果为是，则进入到步骤S805中，如果为否，则进入到步骤S810中。In step S808, it is determined whether the user is keeping pressing, if yes, go to step S805, if no, go to step S810.

在步骤S809中，基于诸如心率PPG特征信号的脉搏信号，计算血氧饱和度。具体而言，通过红色光和红外波段的脉搏信号，交流和直流分量比值，得到当前被测人员的血氧饱和度。In step S809, the blood oxygen saturation is calculated based on the pulse signal such as the heart rate PPG characteristic signal. Specifically, the current blood oxygen saturation of the tested person is obtained through the pulse signal in the red light and infrared bands, and the ratio of the AC and DC components.

在步骤S810中，进行用户界面相关动作的处理。In step S810, processing of actions related to the user interface is performed.

图9为本发明的另一实施例的电子设备的示意性框图。如图9所示，电子设备910包括显示屏902和血氧饱和度检测装置901，血氧饱和度检测装置901设置在显示屏902下方。FIG. 9 is a schematic block diagram of an electronic device according to another embodiment of the present invention. As shown in FIG. 9 , the electronic device 910 includes a display screen 902 and a blood oxygen saturation detection device 901 , and the blood oxygen saturation detection device 901 is arranged below the display screen 902 .

血氧饱和度检测装置901的各个单元和各个部件的功能与血氧饱和度检测装置210相同。The functions of each unit and each component of the blood oxygen saturation detection device 901 are the same as those of the blood oxygen saturation detection device 210 .

至此，已经对本主题的特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作可以按照不同的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序，以实现期望的结果。在某些实施方式中，多任务处理和并行处理可以是有利的。So far, specific embodiments of the present subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In certain embodiments, multitasking and parallel processing may be advantageous.

在20世纪90年代，对于一个技术的改进可以很明显地区分是硬件上的改进(例如，对二极管、晶体管、开关等电路结构的改进)还是软件上的改进(对于方法流程的改进)。然而，随着技术的发展，当今的很多方法流程的改进已经可以视为硬件电路结构的直接改进。设计人员几乎都通过将改进的方法流程编程到硬件电路中来得到相应的硬件电路结构。因此，不能说一个方法流程的改进就不能用硬件实体模块来实现。例如，可编程逻辑器件(Programmable Logic Device,PLD)(例如现场可编程门阵列(Field Programmable Gate Array，FPGA))就是这样一种集成电路，其逻辑功能由用户对器件编程来确定。由设计人员自行编程来把一个数字***“集成”在一片PLD上，而不需要请芯片制造厂商来设计和制作专用的集成电路芯片。而且，如今，取代手工地制作集成电路芯片，这种编程也多半改用“逻辑编译器(logic compiler)”软件来实现，它与程序开发撰写时所用的软件编译器相类似，而要编译之前的原始代码也得用特定的编程语言来撰写，此称之为硬件描述语言(Hardware Description Language，HDL)，而HDL也并非仅有一种，而是有许多种，如ABEL(Advanced Boolean Expression Language)、AHDL(Altera Hardware Description Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL(Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware Description Language)等，目前最普遍使用的是VHDL(Very-High-Speed Integrated Circuit Hardware Description Language)与Verilog。本领域技术人员也应该清楚，只需要将方法流程用上述几种硬件描述语言稍作逻辑编程并编程到集成电路中，就可以很容易得到实现该逻辑方法流程的硬件电路。In the 1990s, improvements in a technology could be clearly differentiated between improvements in hardware (eg, improvements to circuit structures such as diodes, transistors, switches, etc.) or improvements in software (improvements in method flow). However, with the development of technology, the improvement of many methods and processes today can be regarded as a direct improvement of the hardware circuit structure. Designers almost get the corresponding hardware circuit structure by programming the improved method flow into the hardware circuit. Therefore, it cannot be said that the improvement of a method flow cannot be realized by hardware entity modules. For example, a Programmable Logic Device (PLD) (such as a Field Programmable Gate Array (FPGA)) is an integrated circuit whose logic function is determined by user programming of the device. It is programmed by the designer to "integrate" a digital system on a PLD without having to ask the chip manufacturer to design and manufacture a dedicated integrated circuit chip. Moreover, today, instead of making integrated circuit chips by hand, this kind of programming is also mostly implemented using "logic compiler" software, which is similar to the software compiler used in program development and writing, and needs to be compiled before compiling. The original code also has to be written in a specific programming language, which is called Hardware Description Language (HDL), and there is not only one HDL, but many kinds, such as ABEL (Advanced Boolean Expression Language) , AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, RHDL (Ruby Hardware Description Language), etc., currently the most commonly used The ones are VHDL (Very-High-Speed Integrated Circuit Hardware Description Language) and Verilog. It should also be clear to those skilled in the art that a hardware circuit for implementing the logic method process can be easily obtained by simply programming the method process in the above-mentioned several hardware description languages and programming it into the integrated circuit.

控制器可以按任何适当的方式实现，例如，控制器可以采取例如微处理器或处理器以及存储可由该(微)处理器执行的计算机可读程序代码(例如软件或固件)的计算机可读介质、逻辑门、开关、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑控制器和嵌入微控制器的形式，控制器的例子包括但不限于以下微控制器：ARC 625D、Atmel AT91SAM、Microchip PIC18F26K20以及Silicone Labs C8051F320，存储器控制器还可以被实现为存储器的控制逻辑的一部分。本领域技术人员也知道，除了以纯计算机可读程序代码方式实现控制器以外，完全可以通过将方法步骤进行逻辑编程来使得控制器以逻辑门、开关、专用集成电路、可编程逻辑控制器和嵌入微控制器等的形式来实现相同功能。因此这种控制器可以被认为是一种硬件部件，而对其内包括的用于实现各种功能的装置也可以视为硬件部件内的结构。或者甚至，可以将用于实现各种功能的装置视为既可以是实现方法的软件模块又可以是硬件部件内的结构。The controller may be implemented in any suitable manner, for example, the controller may take the form of eg a microprocessor or processor and a computer readable medium storing computer readable program code (eg software or firmware) executable by the (micro)processor , logic gates, switches, application specific integrated circuits (ASICs), programmable logic controllers and embedded microcontrollers, examples of controllers include but are not limited to the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicon Labs C8051F320, the memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art also know that, in addition to implementing the controller in the form of pure computer-readable program code, the controller can be implemented as logic gates, switches, application-specific integrated circuits, programmable logic controllers and embedded devices by logically programming the method steps. The same function can be realized in the form of a microcontroller, etc. Therefore, such a controller can be regarded as a hardware component, and the devices included therein for realizing various functions can also be regarded as a structure within the hardware component. Or even, the means for implementing various functions can be regarded as both a software module implementing a method and a structure within a hardware component.

上述实施例阐明的***、装置、模块或单元，具体可以由计算机芯片或实体实现，或者由具有某种功能的产品来实现。一种典型的实现设备为计算机。具体的，计算机例如可以为个人计算机、膝上型计算机、蜂窝电话、相机电话、智能电话、个人数字助理、媒体播放器、导航设备、电子邮件设备、游戏控制台、平板计算机、可穿戴设备或者这些设备中的任何设备的组合。The systems, devices, modules or units described in the above embodiments may be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or A combination of any of these devices.

为了描述的方便，描述以上装置时以功能分为各种单元分别描述。当然，在实施本发明时可以把各单元的功能在同一个或多个软件和/或硬件中实现。For the convenience of description, when describing the above device, the functions are divided into various units and described respectively. Of course, when implementing the present invention, the functions of each unit may be implemented in one or more software and/or hardware.

本领域内的技术人员应明白，本发明的实施例可提供为方法、***、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本发明是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

内存可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。内存是计算机可读介质的示例。Memory may include forms of non-persistent memory, random access memory (RAM) and/or non-volatile memory in computer readable media, such as read only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。Computer readable media includes both persistent and non-permanent, removable and non-removable media and can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Flash Memory or other memory technology, Compact Disc Read Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media, such as modulated data signals and carrier waves.

还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者设备中还存在另外的相同要素。It should also be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Other elements not expressly listed, or which are inherent to such a process, method, article of manufacture, or apparatus are also included. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture, or device that includes the element.

本领域技术人员应明白，本发明的实施例可提供为方法、***或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本发明可以在由计算机执行的计算机可执行指令的一般上下文中描述，例如程序模块。一般地，程序模块包括执行特定事务或实现特定抽象数据类型的例程、程序、对象、组件、数据结构等等。也可以在分布式计算环境中实践本发明，在这些分布式计算环境中，由通过通信网络而被连接的远程处理设备来执行事务。在分布式计算环境中，程序模块可以位于包括存储设备在内的本地和远程计算机存储介质中。The invention may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular transactions or implement particular abstract data types. The invention may also be practiced in distributed computing environments where transactions are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including storage devices.

本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于***实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。The various embodiments in this specification are described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.

以上所述仅为本发明的实施例而已，并不用于限制本发明。对于本领域技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。The above descriptions are merely embodiments of the present invention, and are not intended to limit the present invention. Various modifications and variations of the present invention are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

一种血氧饱和度检测装置，其特征在于，设置在显示屏下方，所述装置包括：A blood oxygen saturation detection device, characterized in that it is arranged below a display screen, and the device comprises:

光电转换单元，包括第一感光区域，其中，所述光电转换单元通过所述第一感光区域接收来自所述显示屏上方的具有第一波长的第一手指反射光线和具有第二波长的第二手指反射光线，并且基于所述第一手指反射光线和所述第二手指反射光线，生成脉搏数据，The photoelectric conversion unit includes a first photosensitive area, wherein the photoelectric conversion unit receives the reflected light from a first finger with a first wavelength and a second light with a second wavelength from above the display screen through the first photosensitive area the finger reflects light, and generates pulse data based on the first finger reflected light and the second finger reflected light,

检测单元，基于所述脉搏数据，检测手指血氧饱和度。The detection unit detects the blood oxygen saturation of the finger based on the pulse data.
根据权利要求1所述的装置，其中，所述第一手指反射光线通过第一光源照射形成，所述第二手指反射光线通过第二光源照射形成。The device according to claim 1, wherein the reflected light of the first finger is formed by illuminating a first light source, and the reflected light of the second finger is formed by illuminating a second light source.
根据权利要求2所述的装置，其中，所述第一手指反射光线和所述第二手指反射光线的混合手指反射光线通过第一光源和第二光源同时照射手指形成，The device according to claim 2, wherein the mixed finger reflected light of the first finger reflected light and the second finger reflected light is formed by simultaneously illuminating the finger with the first light source and the second light source,

其中，所述第一感光区域包括第一子感光区域和第二子感光区域，所述第一子感光区域和所述第二子感光区域上方分别设置有选择所述第一波长的第一滤波器和选择所述第二波长的第二滤波器。Wherein, the first photosensitive region includes a first sub-sensing region and a second sub-sensing region, and a first filter for selecting the first wavelength is respectively provided above the first sub-sensing region and the second sub-sensing region. and a second filter that selects the second wavelength.
根据权利要求2所述的装置，其中，所述第一手指反射光线和所述第二手指反射光线通过所述第一光源和所述第二光源交替照射手指形成。The device according to claim 2, wherein the reflected light from the first finger and the reflected light from the second finger are formed by alternately irradiating the finger with the first light source and the second light source.
根据权利要求3或4所述的装置，其中，所述第一光源为所述显示屏的至少一部分，所述显示屏为自发光显示屏，所述第二光源设置在所述显示屏下方。The device according to claim 3 or 4, wherein the first light source is at least a part of the display screen, the display screen is a self-luminous display screen, and the second light source is arranged below the display screen.
根据权利要求3或4所述的装置，其中，所述第一光源和所述第二光源均设置在所述显示屏的下方。The device according to claim 3 or 4, wherein the first light source and the second light source are both arranged below the display screen.
根据权利要求1所述的装置，其中，所述检测单元设置在所述光电转换单元下方或侧边，所述光电转换单元与所述检测单元一体封装成芯片或模组。The device according to claim 1, wherein the detection unit is disposed below or on the side of the photoelectric conversion unit, and the photoelectric conversion unit and the detection unit are integrally packaged into a chip or a module.
根据权利要求1所述的装置，其中，所述光电转换单元还包括第二感光区域，所述光电转换单元通过所述第二感光区域接收来自所述显示屏上方的第三手指反射光线，并且基于所述第三手指反射光线，生成指纹数据，所述装置还包括：The device according to claim 1, wherein the photoelectric conversion unit further comprises a second photosensitive area, and the photoelectric conversion unit receives reflected light from a third finger above the display screen through the second photosensitive area, and Based on the reflected light of the third finger, fingerprint data is generated, and the device further includes:

指纹识别单元，基于所述指纹数据，进行指纹识别。The fingerprint identification unit performs fingerprint identification based on the fingerprint data.
根据权利要求8所述的装置，其中，所述检测单元和所述指纹识别单元均设置在所述光电转换单元下方或侧边，其中，所述光电转换单元、所述检测单元以及所述指纹识别单元一体封装成芯片或模组。The device according to claim 8, wherein the detection unit and the fingerprint identification unit are both arranged below or on the side of the photoelectric conversion unit, wherein the photoelectric conversion unit, the detection unit and the fingerprint The identification unit is integrally packaged into a chip or a module.
根据权利要求1所述的装置，其中，所述检测单元具体用于：The device according to claim 1, wherein the detection unit is specifically used for:

基于所述脉搏数据，提取对应于所述第一波长的脉搏信号以及对应于所述第二波长的脉搏信号；extracting a pulse signal corresponding to the first wavelength and a pulse signal corresponding to the second wavelength based on the pulse data;

计算所述第一波长的脉搏信号和所述第二波长的脉搏信号各自的交直比例关系，所述交直比例关系指示信号交流分量与信号直流分量之间的比例；calculating the respective AC/DC proportional relationships of the pulse signal of the first wavelength and the pulse signal of the second wavelength, the AC/DC proportional relationship indicating the ratio between the AC component of the signal and the DC component of the signal;

检测模块，根据所述各自的交直比例关系，检测所述手指血氧饱和度。The detection module detects the blood oxygen saturation of the finger according to the respective AC/DC proportional relationships.
根据权利要求10所述的装置，其中，所述检测单元具体用于：The device according to claim 10, wherein the detection unit is specifically used for:

基于预设帧率，对所述脉搏数据进行采集，得到对应于所述第一波长的脉搏信号以及对应于所述第二波长的脉搏信号；Collecting the pulse data based on a preset frame rate to obtain a pulse signal corresponding to the first wavelength and a pulse signal corresponding to the second wavelength;

确定所述第一波长的脉搏信号和所述第二波长的脉搏信号分别基于所述预设帧率的平均信号特征；determining the pulse signal of the first wavelength and the pulse signal of the second wavelength respectively based on the average signal characteristics of the preset frame rate;

根据所述平均信号特征，计算所述第一波长的脉搏信号和所述第二波长的脉搏信号各自的交直比例关系。According to the characteristic of the average signal, the AC/DC proportional relationship between the pulse signal of the first wavelength and the pulse signal of the second wavelength is calculated.
根据权利要求1-11中任一项所述的装置，其中，所述第一波长处于红光波段，所述第二波长处于红外光波段。The device according to any one of claims 1-11, wherein the first wavelength is in the red light band and the second wavelength is in the infrared light band.
根据权利要求12所述的装置，其中，所述第三手指反射光线的波长小于所述红光波段的波长。The device according to claim 12, wherein the wavelength of light reflected by the third finger is smaller than the wavelength of the red light band.
一种电子设备，其特征在于，包括：An electronic device, comprising:

显示屏；display screen;

根据权利要求1-13中任一项所述的血氧饱和度检测装置，设置在所述显示屏下方。The blood oxygen saturation detection device according to any one of claims 1-13, which is arranged below the display screen.