CN106137216B

CN106137216B - Blood oxygen information detection method and device

Info

Publication number: CN106137216B
Application number: CN201510128672.5A
Authority: CN
Inventors: 徐然
Original assignee: Beijing Zhigu Ruituo Technology Services Co Ltd
Current assignee: Beijing Zhigu Ruituo Technology Services Co Ltd
Priority date: 2015-03-23
Filing date: 2015-03-23
Publication date: 2022-01-18
Anticipated expiration: 2035-03-23
Also published as: CN106137216A

Abstract

The application provides a blood oxygen information detection method and device, and relates to the field of electronic devices. The method comprises the following steps: responding to at least one part of a user body contacting a display screen, and determining a target area on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea; controlling the first transmitting subregion to transmit a first optical signal; controlling the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted; controlling the second transmitting subarea to transmit a third optical signal; controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted; and determining blood oxygen information of the user according to the second light signal and the fourth light signal. The method and the device can adaptively set the corresponding target area as the detection area, thereby improving the detection flexibility and the detection efficiency.

Description

Blood oxygen information detection method and device

Technical Field

The present application relates to the field of electronic devices, and in particular, to a method and device for detecting blood oxygen information.

Background

With the development of electronic devices and health concerns of people, most of the current electronic devices integrate some health monitoring modules. For example, some smart phones and wearable devices integrate a blood oxygen detection module for detecting information such as the blood oxygen saturation of a user.

Fig. 1 illustrates a blood oxygen detection method, which comprises the following steps: the user's finger is placed between the first grip portion 111 and the second grip portion 112; the red light emitting module 121 emits red light, and the red light is received by the red light receiving module 122 through a finger; the infrared light emitting module 131 emits infrared light, and the infrared light is received by the infrared receiving module 132 through the finger. From the intensities of the received red light and infrared light, the degree of oxygenation of hemoglobin, i.e., the blood oxygen saturation, can be determined by measuring the ratio of the amount of absorption of infrared light to the amount of absorption of red light based on spectrophotometry.

Of course, in some other implementations, the blood oxygen saturation may also be determined based on the reflection of light, in a similar manner to the transmission described above.

The existing blood oxygen information detection methods all require that a user body, such as a finger, is placed in a specific area to complete detection, and have inflexible detection process, low efficiency and poor user experience.

Disclosure of Invention

The purpose of this application is: a blood oxygen information detection method and device are provided to improve the flexibility of detection.

According to a first aspect of at least one embodiment of the present application, there is provided a blood oxygen information detection method, including:

in response to at least one part of a user body contacting a display screen, determining a target area on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea;

controlling the first transmitting subarea to transmit a first optical signal;

controlling the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted;

controlling the second transmitting subarea to transmit a third optical signal;

controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted;

determining blood oxygen information of the user according to the second light signal and the fourth light signal.

With reference to any one of the possible implementation manners of the first aspect, in a second possible implementation manner, the determining a target area on a display screen in response to at least a part of a body of a user contacting the display screen includes:

in response to a plurality of parts of a body of a user contacting the display screen, determining a plurality of contact areas corresponding to the parts on the display screen respectively;

determining the target region according to the areas and/or shapes of the plurality of contact regions.

With reference to any one of the possible implementation manners of the first aspect, in a third possible implementation manner, the determining the target region according to the areas and/or the shapes of the multiple contact regions includes:

and taking the largest one of the contact areas as the target area.

With reference to any one of the possible implementation manners of the first aspect, in a fourth possible implementation manner, the determining the target region according to the areas and/or the shapes of the multiple contact regions includes:

and taking one of the contact regions with the shape corresponding to the shape of a fingertip as the target region.

With reference to any one of the possible implementation manners of the first aspect, in a fifth possible implementation manner, the determining the target region according to the areas and/or the shapes of the multiple contact regions includes:

and taking the area of the contact areas larger than a preset value and the shape of the contact areas corresponding to one of the shapes of fingertips as the target area.

With reference to any one of the possible implementation manners of the first aspect, in a sixth possible implementation manner, the determining a target area on a display screen in response to at least a part of a body of a user contacting the display screen includes:

in response to the at least one part of the user's body contacting the display screen and a predetermined trigger condition being met, determining the target area on the display screen.

With reference to any one of the possible implementation manners of the first aspect, in a seventh possible implementation manner, the predetermined trigger condition includes: the fingerprint collected by the display screen belongs to a preset fingerprint set.

With reference to any one of the possible implementation manners of the first aspect, in an eighth possible implementation manner, the target area is the same as an area where the fingerprint is captured on the display screen.

With reference to any one of the possible implementation manners of the first aspect, in a ninth possible implementation manner, the predetermined trigger condition includes: the application program running in the foreground of the electronic equipment to which the display screen belongs to a preset application program set.

With reference to any one of the possible implementation manners of the first aspect, in a tenth possible implementation manner, the target region further includes a spacing sub-region, and the spacing sub-region is located between the first receiving sub-region and the second receiving sub-region.

With reference to any one of the possible implementation manners of the first aspect, in an eleventh possible implementation manner, the intensity of the first optical signal is greater than a first threshold, and the intensity of the third optical signal is greater than a second threshold.

With reference to any one of the possible implementation manners of the first aspect, in a twelfth possible implementation manner, the first light signal uses green light, and the third light signal uses red light.

With reference to any one of the possible implementation manners of the first aspect, in a thirteenth possible implementation manner, the display screen is a light emitting diode, LED, screen.

According to a second aspect of at least one embodiment of the present application, there is provided a blood oxygen information detecting apparatus, the apparatus including:

the target area determining module is used for responding to at least one part of the body of the user contacting a display screen, and determining a target area on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea;

the first control module is used for controlling the first sending subregion to send a first optical signal;

the second control module is used for controlling the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted;

the third control module is used for controlling the second sending subregion to send a third optical signal;

the fourth control module is used for controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted;

and the blood oxygen information determining module is used for determining the blood oxygen information of the user according to the second optical signal and the fourth optical signal.

With reference to any one of the possible implementation manners of the second aspect, in a second possible implementation manner, the target region determining module includes:

a contact area determination unit, configured to determine, in response to a plurality of parts of a body of a user contacting the display screen, a plurality of contact areas corresponding to the plurality of parts, respectively, on the display screen;

and the target area determining unit is used for determining the target area according to the areas and/or the shapes of the contact areas.

With reference to any one of the possible implementation manners of the second aspect, in a third possible implementation manner, the target region determining unit is configured to use one of the multiple contact regions with the largest area as the target region.

With reference to any one of the possible implementation manners of the second aspect, in a fourth possible implementation manner, the target region determination unit is configured to use one of the contact regions, the shape of which corresponds to a fingertip shape, as the target region.

With reference to any one of the possible implementation manners of the second aspect, in a fifth possible implementation manner, the target region determining unit is configured to use one of the contact regions, which has an area larger than a predetermined value and a shape corresponding to a shape of a fingertip, as the target region.

With reference to any one of the possible implementation manners of the second aspect, in a sixth possible implementation manner, the target area determination module is configured to determine the target area on the display screen in response to the at least one part of the body of the user contacting the display screen and satisfying a predetermined trigger condition.

With reference to any one of the possible implementation manners of the second aspect, in a seventh possible implementation manner, the display screen is an LED screen.

The method and the device of the embodiment of the application respond to the fact that at least one part of the body of a user contacts a display screen, the target area is determined on the display screen and comprises a first sending sub-area, a first receiving sub-area, a second sending sub-area and a second receiving sub-area, then the first sending sub-area, the first receiving sub-area, the second sending sub-area and the second receiving sub-area are subjected to sending and receiving light control, blood oxygen information of the user is finally determined, namely, the user can place the detection part of the body of the user at any position of the display screen, the method can set the corresponding target area as the detection area in a self-adaptive mode, and therefore detection flexibility and detection efficiency are improved.

Drawings

FIG. 1 is a schematic diagram illustrating a blood oxygen information detection principle;

FIG. 2 is a flow chart of a blood oxygenation information detection method according to an embodiment of the present application;

FIG. 3 is a detailed flowchart of the step S220 in one embodiment of the present application;

FIG. 4 is a schematic view of contact areas of different shapes in one embodiment of the present application;

fig. 5 is a schematic diagram of a positional relationship between sub-regions in the target region according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating a positional relationship between sub-regions in the target region according to another embodiment of the present disclosure;

FIG. 7 is a schematic diagram illustrating a positional relationship between sub-regions in the target region according to another embodiment of the present disclosure;

FIG. 8 is a schematic diagram illustrating a positional relationship between sub-regions in the target region according to another embodiment of the present disclosure;

FIG. 9 is a schematic diagram illustrating a positional relationship between sub-regions in the target region according to another embodiment of the present application;

FIG. 10 is a block diagram of a blood oxygenation information detection device according to an embodiment of the present application;

FIG. 11 is a block diagram of the target area determination module in one embodiment of the present application;

fig. 12 is a schematic diagram of a hardware structure of the blood oxygen information detecting device according to an embodiment of the present application.

Detailed Description

The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

Those skilled in the art will understand that, in the embodiments of the present application, the size of the serial number of each step described below does not mean the execution sequence, and the execution sequence of each step should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The inventor finds out in the research process that the existing blood oxygen information detection process has poor flexibility and low efficiency because the positions of the light-emitting part and the light-receiving part are fixed, and the detection part of the user is required to be matched with the detection equipment. Therefore, if the detection site can be actively adapted by the detection equipment, the detection flexibility and detection efficiency can be significantly improved.

Fig. 2 is a flowchart illustrating a blood oxygen information detecting method according to an embodiment of the present application, which may be implemented on a blood oxygen information detecting device, for example. As shown in fig. 2, the method includes:

s220: in response to at least one part of a user body contacting a display screen, determining a target area on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea;

s240: controlling the first transmitting subarea to transmit a first optical signal;

s260: controlling the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted;

s280: controlling the second transmitting subarea to transmit a third optical signal;

s300: controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted;

s320: determining blood oxygen information of the user according to the second light signal and the fourth light signal.

The method of the embodiment of the application, in response to at least one part of a user body contacting a display screen, determines the target area on the display screen, where the target area includes a first sending sub-area, a first receiving sub-area, a second sending sub-area and a second receiving sub-area, and then sends and receives light to the first sending sub-area, the first receiving sub-area, the second sending sub-area and the second receiving sub-area, and finally determines the blood oxygen information of the user, that is, the user can place the detected part of the user body at any position of the display screen.

The functions of steps S220, S240, S260, S280, S300 and S320 will be described in detail below with reference to specific embodiments.

S220: in response to at least one part of a user body contacting a display screen, a target area is determined on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea.

Wherein, at least one part of the user body can be any part capable of contacting with the display screen, and generally, the part can be a hand of the user, such as a finger.

The display screen may be a display screen of an electronic device, such as a display screen of a mobile phone.

The target area is an area on the display screen selected for blood oxygenation information detection of the user and is associated with a contact area of the user's body with the display screen. In the case where the user has only one portion in contact with the display screen, the target area may be determined directly from a contact area on the display screen corresponding to the portion. In the case where the user has a plurality of portions in contact with the display screen, that is, in the case where there are a plurality of contact areas, the target area may be determined according to some preferred contact areas.

Specifically, referring to fig. 3, in an embodiment, the step S220 may include:

s221: in response to a plurality of parts of a body of a user contacting the display screen, determining a plurality of contact areas corresponding to the parts on the display screen respectively;

s222: determining the target region according to the areas and/or shapes of the plurality of contact regions.

In step S221, the plurality of contact areas corresponding to the plurality of portions may be detected and determined by, for example, a capacitance sensor, an optical sensor, or the like on the display screen.

In step S222, the areas and shapes of the contact areas may be determined according to a change of the distribution of the induced capacitance on the display screen, for example.

In an embodiment, the step S222 may specifically include:

s222 a: and taking the largest one of the contact areas as the target area.

That is, the areas of the plurality of contact regions may be calculated separately, and then one having the largest area may be selected as the target region. Generally, if the area of the contact area of the user's body with the display screen is too small, poor detection accuracy may result; on the contrary, the detection accuracy can be remarkably improved by the large-area contact area. Therefore, in the present embodiment, by selecting the contact region having the largest area as the target region, the detection accuracy can be effectively improved.

In another embodiment, the step S222 may specifically include:

s222 b: and taking one of the contact regions with the shape corresponding to the shape of a fingertip as the target region.

The plurality of contact areas correspond to a plurality of different parts of the body of the user, and the inventor finds that capillaries of human finger parts are rich in research process, which is more beneficial to improving the accuracy of blood oxygen information detection, so that the fingers should be preferentially taken as the detection parts.

Referring to fig. 4, two differently shaped contact areas identified on the display screen 400 are shown: a first contact area 410 and a second contact area 420. The first contact area 410 is substantially elliptical and is a contact area corresponding to the tip of the index finger; the second contact region 420 has a non-standard half-moon shape and is the contact region corresponding to the palm.

In step S222b, the similarity between the shapes of the plurality of contact regions and a predetermined fingertip shape may be calculated, and the highest one of the similarities may be selected as the target region. The fingertip shape may be, for example, a shape of a contact area obtained when a fingertip of a finger of a user trained in advance is in contact with the display screen.

In another embodiment, the step S222 may specifically include:

s222 c: and taking the area of the contact areas larger than a preset value and the shape of the contact areas corresponding to one of the shapes of fingertips as the target area.

In the present embodiment, the area and the shape of the contact region are comprehensively considered to improve the detection accuracy as much as possible. The predetermined value may be set according to the actual detection effect, and may be set to 0.0001 square meter, for example.

In addition, in addition to selecting and determining the target region from the multiple contact regions or only one contact region, a contact region may be selected first, and then a region including the contact region or a region included in the contact region may be used as the target region; alternatively, in the case of detecting blood oxygenation information in a transmission mode, the contact area and the area opposite to the contact area may be used together as the target area.

In step S220, the first transmitting sub-area and the second transmitting sub-area are areas for transmitting optical signals to a contact part of a body of a user, and the first receiving sub-area and the second receiving sub-area are areas for receiving optical signals.

In one embodiment, the position relationship among the first transmitting sub-area 411, the first receiving sub-area 412, the second transmitting sub-area 421 and the second receiving sub-area 422 may be as shown in fig. 5.

As shown in fig. 6, in one embodiment, on the display screen 600, the first sending sub-area includes a plurality of first sending units 611, the first receiving sub-area includes a plurality of first receiving units 612, and the plurality of first sending units 611 and the plurality of first receiving units 612 are distributed in an interlaced manner. Similarly, the second transmitting sub-region includes a plurality of second transmitting units 621, the second receiving sub-region includes a plurality of second receiving units 622, and the plurality of second transmitting units 621 and the plurality of second receiving units 622 are distributed in an interleaving manner.

The first transmitting unit 611 and the second transmitting unit 621 may be, for example, display pixels in a Light Emitting state on the OLED (Organic Light-Emitting Diode) screen, and the first receiving unit 612 and the second receiving unit 622 may be, for example, display pixels in a Light receiving state on the display screen 600.

As shown in fig. 7, in another embodiment, one end of the display screen 700 has a cylindrical structure, the first transmitting sub-area 711 and the first receiving sub-area 712 are relatively distributed, and the second transmitting sub-area 721 and the second receiving sub-area 722 are relatively distributed. In this embodiment, for example, a contact area of the body of the user with the display screen 700 may be determined as the first transmission sub-area 711 and the second transmission sub-area 721, and then a region opposite to the first transmission sub-area 711 may be determined as the first reception sub-area 712 and a region opposite to the second transmission sub-area 721 may be determined as the second reception sub-area 722.

S240: and controlling the first transmitting subarea to transmit a first optical signal.

In one embodiment, the display screen may be an LED (Light-Emitting Diode) screen, and the LED screen may be an LED array screen or an OLED screen. Accordingly, the step S240 may include:

s240': and controlling the first sending sub-area to send the first optical signal by applying a forward voltage to a pixel corresponding to the first sending sub-area. It is understood by those skilled in the art that when a forward voltage is applied to a pixel of an LED display screen, the pixel is in a light-emitting state.

In the research process, the inventor finds that, in order to improve the detection accuracy of the blood oxygen information, the intensity of the first optical signal may be increased, that is, the intensity of the first optical signal is ensured to be greater than a first intensity threshold, and the first intensity threshold may be set according to practical applications, for example, may be set to 390 cd/square meter.

S260: and controlling the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted.

In one embodiment, as mentioned above, the display screen may be an LED screen, and the step S260 may include:

s260': and controlling the first receiving subarea to receive the second optical signal by applying reverse voltage to pixels corresponding to the first receiving subarea. It is understood by those skilled in the art that when a reverse voltage is applied to a pixel of an LED display screen, the pixel is in a light-receiving state.

In addition, in the case that the display screen is not an LED screen, the skilled person understands that the solution of the present invention can also be implemented by disposing a light sensor on the display screen to receive the second light signal.

The reflection mode and the transmission mode are two basic modes for detecting blood oxygen information, and different implementation modes can generate different requirements on the display screen and the position relation between the first sending sub-area and the first receiving sub-area.

In one embodiment, the second optical signal is obtained by reflecting the first optical signal through a contact part of a user body, and this case can be applied to many display screens, for example, any one of the display screens shown in fig. 5, 6, and 7. In this case, the first transmitting subregion and the first receiving subregion may be disposed adjacently as shown in fig. 5 or fig. 6, or may be disposed separately, but when disposed separately, an included angle between a normal of the first transmitting subregion and a normal of the first receiving subregion should satisfy a requirement of light reflection, and may be, for example, 45 °.

In another embodiment, the second optical signal is obtained by transmitting the first optical signal through the body of the user, in which case the display screen is required to have a certain bending function, such as the display screen shown in fig. 7, and in general, the display screen may be made of a flexible display material, so that the shape of the display screen can be changed according to the user's needs. Accordingly, in this case, the first transmitting sub-region and the first receiving sub-region are generally disposed separately as shown in fig. 7, and the planes of the first transmitting sub-region and the first receiving sub-region are parallel (or nearly parallel) to each other.

S280: and controlling the second sending subregion to send a third optical signal.

In one embodiment, as mentioned above, the display screen may be an LED screen, and accordingly, the step S280 may include:

s280': and controlling the second sending sub-region to send the third optical signal by applying a forward voltage to a pixel corresponding to the second sending sub-region.

In the research process, the inventor finds that, in order to improve the detection accuracy of the blood oxygen information, the intensity of the third optical signal may be increased, that is, the intensity of the first optical signal is ensured to be greater than a second intensity threshold, and the second intensity threshold may be set according to practical applications, for example, may be set to 390 cd/square meter.

Wherein the first optical signal and the third optical signal may be optical signals of two different wavelengths. For example, the first light signal may adopt green light, and the third light signal may adopt red light; and vice versa.

S300: and controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted.

In one embodiment, as mentioned above, the display screen may be an LED screen, and the step S300 may include:

s300': and controlling the second receiving subarea to receive the fourth optical signal by applying reverse voltage to pixels corresponding to the second receiving subarea.

Those skilled in the art understand that the second receiving sub-region receives the fourth optical signal in a similar principle to the first receiving sub-region. Thus, the second receiving sub-area may also receive the fourth optical signal, for example by means of a light sensor, which may also receive the fourth optical signal in a reflective or transmissive manner.

Those skilled in the art will understand that, according to the received intensities of the second optical signal and the fourth optical signal, the ratio of the first optical signal absorption amount and the third optical signal absorption amount can be correspondingly determined based on spectrophotometry, and then blood oxygen information such as blood oxygen saturation of the user can be determined. Therefore, important physiological indexes such as the blood oxygen saturation of the user can be obtained according to the method, and the method is beneficial to effectively monitoring the health condition of the user. Further, the health state related information may be sent to the user or the relatives and friends of the user to remind the user to pay attention to health.

In addition, it should be noted that, in order to further improve the accuracy of blood oxygen information detection, in the case that the body of the user has a plurality of contact positions with the display screen, a plurality of (including two) target areas may also be determined, the above-mentioned methods are respectively performed, and then the blood oxygen information is comprehensively calculated.

In another embodiment, the step S220 may further include:

s220': in response to the at least one part of the user's body contacting the display screen and a predetermined trigger condition being met, determining the target area on the display screen.

That is, according to the user's requirement, the method of the present application can be limited to be executed only in some specific situations by the predetermined trigger condition.

In one embodiment, the predetermined trigger condition includes: the fingerprint collected by the display screen belongs to a preset fingerprint set. The predetermined fingerprint set may include fingerprints of users who are authorized in advance, for example, in a case where the display screen is a display screen of a smartphone, the predetermined fingerprint set may include fingerprints of an owner and a spouse of the owner.

In one embodiment, the target area is the same as the area on the display screen where the fingerprint was captured, for user convenience. For example, the display screen may use a contact area of the user on the display screen as a fingerprint collecting area, and if the collected fingerprint belongs to the predetermined fingerprint set, further determine the contact area as the target area, and then execute the blood oxygen information detecting method.

In another embodiment, the predetermined trigger condition includes: the application program running in the foreground of the electronic equipment to which the display screen belongs to a preset application program set.

The predetermined set of applications includes applications suitable for detecting blood oxygenation information of a user. In other words, with these applications running in the foreground, the user's body contact with the display screen is relatively stable. For example, the predetermined set of applications may include: a call program, an electronic book program, a video playback program, and the like. By the limitation, the blood oxygen information of the user can be detected efficiently and accurately in the process of using the electronic equipment normally by the user.

In addition, since the method involves reception of the second optical signal and the fourth optical signal, there may be a problem in that the second optical signal and the fourth optical signal interfere with each other to cause a decrease in detection accuracy. To avoid interference, in one embodiment, the target region further includes a spacer sub-region located between the first receiving sub-region and the second receiving sub-region. In this embodiment, the target area may be as shown in fig. 8, the target area on the display screen 800 includes a first sending sub-area 811, a first receiving sub-area 812, a second sending sub-area 821 and a second receiving sub-area 822, and a spacing sub-area 830 is further included between the first receiving sub-area 812 and the second receiving sub-area 822.

If the target area is large enough, a spacer sub-area may also be provided between the first transmission sub-area 811 and the second transmission sub-area 821 to further reduce interference.

In addition, the positional relationship among the first transmitting subregion 811, the first receiving subregion 812, the second transmitting subregion 821 and the second receiving subregion 822 may be reasonably adjusted to reduce interference, for example, as shown in fig. 9, the first transmitting subregion 811 and the second transmitting subregion 821 may be disposed in the middle of the target region, the first receiving subregion 812 and the second receiving subregion 822 may be correspondingly disposed on two sides of the target region, and in combination with controlling the light emitting directions of the first transmitting subregion 811 and the second transmitting subregion 821, the interference may also be significantly reduced, and the detection accuracy may be improved.

Furthermore, embodiments of the present application also provide a computer-readable medium, comprising computer-readable instructions that when executed perform the following operations: the operations of steps S220, S240, S260, S280, S300 and S320 of the method in the embodiment shown in fig. 2 described above are performed.

In summary, the method of the embodiment of the present application can determine the blood oxygen information of the user through the display screen of the electronic device in the process of the user normally using the electronic device, so that the blood oxygen information detection can be flexibly and efficiently completed, and the health condition of the user can be conveniently and effectively monitored.

Fig. 10 is a schematic block diagram illustrating a blood oxygen information detecting device according to an embodiment of the present application, where the device may be a separate device for detecting blood oxygen information of a user, or may be integrated as a functional module in any other electronic device, such as a smart phone. Referring to fig. 10, the apparatus 1000 may include:

a target area determination module 1010, configured to determine a target area on a display screen in response to at least a portion of a user's body contacting the display screen, where the target area includes a first transmitting sub-area, a first receiving sub-area, a second transmitting sub-area, and a second receiving sub-area;

a first control module 1020, configured to control the first transmitting sub-area to transmit a first optical signal;

a second control module 1030, configured to control the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted;

a third control module 1040, configured to control the second transmitting sub-region to transmit a third optical signal;

a fourth control module 1050, configured to control the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted;

a blood oxygen information determining module 1060, configured to determine blood oxygen information of the user according to the second light signal and the fourth light signal.

The device responds to at least one part of the body of a user contacting a display screen, determines the target area on the display screen, wherein the target area comprises a first sending sub-area, a first receiving sub-area, a second sending sub-area and a second receiving sub-area, and then sends and receives light to the first sending sub-area, the first receiving sub-area, the second sending sub-area and the second receiving sub-area to finally determine the blood oxygen information of the user, namely, the user can place the detection part of the body of the user at any position of the display screen, and the device can adaptively set the corresponding target area as a detection area, so that the detection flexibility and the detection efficiency are improved.

The functions of the target area determination module 1010, the first control module 1020, the second control module 1030, the third control module 1040, the fourth control module 1050 and the blood oxygen information determination module 1060 will be described in detail below with reference to specific embodiments.

The target area determining module 1010 is configured to determine a target area on a display screen in response to at least a portion of a body of a user contacting the display screen, where the target area includes a first transmitting sub-area, a first receiving sub-area, a second transmitting sub-area, and a second receiving sub-area.

The display screen may be a display screen of the device 1000, for example, the device 1000 is a mobile phone, and the display screen is a display screen of the mobile phone.

Specifically, referring to fig. 11, in one embodiment, the target area determination module 1010 may include:

a contact area determining unit 1011, configured to determine, in response to a plurality of parts of the body of the user contacting the display screen, a plurality of contact areas corresponding to the plurality of parts on the display screen;

a target region determining unit 1012, configured to determine the target region according to the areas and/or shapes of the plurality of contact regions.

The touch area determination unit 1011 may determine the plurality of touch areas by detecting, for example, a capacitive sensor, a photosensor, or the like on the display screen.

The target area determining unit 1012 may determine the areas and shapes of the plurality of contact areas, for example, according to a change in the distribution of the induced capacitance on the display screen.

In an embodiment, the target region determining unit 1012 is configured to use one of the contact regions with the largest area as the target region. By selecting the contact area with the largest area as the target area, the detection accuracy can be effectively improved.

In another embodiment, the target area determining unit 1012 is configured to use one of the contact areas with a shape corresponding to a shape of a fingertip as the target area.

The inventor finds that capillaries at the finger part of a person are rich in the research process, and the accuracy of blood oxygen information detection is improved. In this embodiment, target region determining section 1012 may calculate the similarity between each of the shapes of the plurality of contact regions and a predetermined fingertip shape, and select one having the highest similarity as the target region. The fingertip shape may be, for example, a shape of a contact area obtained when a fingertip of a finger of a user trained in advance is in contact with the display screen.

In another embodiment, the target region determining unit 1012 is configured to use one of the contact regions having an area larger than a predetermined value and a shape corresponding to a shape of a fingertip as the target region.

The first and second transmitting sub-areas are areas for transmitting optical signals to a contact part of a user's body, and the first and second receiving sub-areas are areas for receiving optical signals. The position relationship among the first transmitting sub-area, the first receiving sub-area, the second transmitting sub-area and the second receiving sub-area may be in various situations, including but not limited to the position relationship shown in fig. 5, 6 and 7.

The first control module 1020 is configured to control the first transmitting sub-area to transmit a first optical signal.

The second control module 1030 is configured to control the first receiving sub-area to receive a second optical signal after the first optical signal is reflected or transmitted.

In an embodiment, the display screen may be an LED screen, and the first control module 1020 may be configured to control the first transmitting sub-region to transmit the first light signal by applying a forward voltage to a pixel corresponding to the first transmitting sub-region; the second control module 1030 may be configured to control the first receiving sub-region to receive the second optical signal by applying a reverse voltage to a pixel corresponding to the first receiving sub-region.

It is understood by those skilled in the art that when a forward voltage is applied to a pixel of an LED display screen, the pixel is in a light-emitting state; when a reverse voltage is applied to a certain pixel of the LED display screen, the pixel is in a light receiving state.

The inventor finds in a research process that, in order to improve the detection accuracy of the blood oxygen information, the intensity of the first optical signal may be increased, that is, the intensity of the first optical signal is ensured to be greater than an intensity threshold, and the intensity threshold may be set according to an actual application, for example, may be set to 390 cd/square meter.

The third control module 1040 is configured to control the second sending sub-region to send a third optical signal.

The fourth control module 1050 is configured to control the second receiving sub-area to receive a fourth optical signal after the third optical signal is reflected or transmitted.

In one embodiment, as described above, the display screen may be an LED screen, and the third control module 1040 may be configured to control the second sending sub-region to send the third optical signal by applying a forward voltage to the pixel corresponding to the second sending sub-region; the fourth control module 1050 may be configured to control the second receiving sub-region to receive the fourth optical signal by applying a reverse voltage to a pixel corresponding to the second receiving sub-region.

The blood oxygen information determining module 1060 is configured to determine the blood oxygen information of the user according to the second light signal and the fourth light signal.

Those skilled in the art will understand that, according to the received intensities of the second optical signal and the fourth optical signal, the ratio of the first optical signal absorption amount and the third optical signal absorption amount can be correspondingly determined based on spectrophotometry, and then blood oxygen information such as blood oxygen saturation of the user can be determined.

In another embodiment, the target area determining module 1010 is configured to determine the target area on the display screen in response to the at least one part of the body of the user contacting the display screen and satisfying a predetermined trigger condition.

That is, the device of the present application may be limited to activating the blood oxygen detection function in some specific situations by the predetermined trigger condition according to the user's requirement.

The predetermined set of applications includes applications suitable for detecting blood oxygenation information of a user. In other words, with these applications running in the foreground, the user's body contact with the display screen is relatively stable. For example, the predetermined set of applications may include: a call program, an electronic book program, a video playback program, and the like. By means of the limitation, the blood oxygen information of the user can be detected and determined efficiently and accurately in an inadvertent way in the process that the user uses the electronic equipment normally.

In addition, since the apparatus involves reception of the second optical signal and the fourth optical signal, there may be a problem in that the second optical signal and the fourth optical signal interfere with each other to cause a decrease in detection accuracy. To avoid interference, in one embodiment, the target region further includes a spacer sub-region located between the first receiving sub-region and the second receiving sub-region. In this embodiment, the target area may be as shown in fig. 8, the target area on the display screen 800 includes a first sending sub-area 811, a first receiving sub-area 812, a second sending sub-area 821 and a second receiving sub-area 822, and a spacing sub-area 830 is further included between the first receiving sub-area 812 and the second receiving sub-area 822.

An application scenario of the blood oxygen information detection method and device according to the embodiment of the present application may be as follows: a user makes a call using a smartphone, which smartphone includes two display screens: the display screen comprises a front screen and a back screen, wherein the two screens are OLED screens; a user operates an application icon on the front screen to start a conversation program, and the back screen is in a screen locking state; when the user holds the telephone close to the ear, the front screen becomes dark to prevent misoperation; meanwhile, the back screen is lightened, the contact area is determined as a target area by the smart phone when the forefinger of the user is detected to contact the middle part of the screen, and the target area is divided into a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea; then, controlling the pixels in the first transmitting sub-area to emit green light, and controlling the pixels in the first receiving sub-area to receive green light reflected by the finger; controlling the pixels in the second sending subarea to emit red light, and controlling the pixels in the second receiving subarea to receive red light reflected by the finger; and finally, determining the blood oxygen information of the user according to the green light reflected light and the red light reflected light, further calculating to obtain the health information of the user, and outputting the health information to the user.

The hardware structure of the blood oxygen information detecting device according to another embodiment of the present application is shown in fig. 12. The specific embodiment of the present application does not limit the specific implementation of the blood oxygen information detecting device, and referring to fig. 12, the device 1200 may include:

a processor (processor)1210, a Communications Interface 1220, a memory 1230, and a Communications bus 1240. Wherein:

the processor 1210, communication interface 1220, and memory 1230 communicate with each other via a communication bus 1240.

A communication interface 1220 for communicating with other network elements.

The processor 1210 is configured to execute the program 1232, and may specifically perform the relevant steps in the method embodiment shown in fig. 1.

In particular, the program 1232 may include program code comprising computer operational instructions.

Processor 1210 may be a central processing unit CPU or an application Specific Integrated circuit asic or one or more Integrated circuits configured to implement embodiments of the present application.

The memory 1230 stores programs 1232. The memory 1230 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The program 1232 may specifically perform the following steps:

controlling the first transmitting subarea to transmit a first optical signal;

controlling the second transmitting subarea to transmit a third optical signal;

For specific implementation of each step in the program 1232, reference may be made to corresponding steps or modules in the foregoing embodiments, which are not described herein again. It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described devices and modules may refer to the corresponding process descriptions in the foregoing method embodiments, and are not described herein again.

Those of ordinary skill in the art will appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. 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.

The functions, if implemented in the form of software functional units 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 or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a controller, 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: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above embodiments are merely illustrative, and not restrictive, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present application, and therefore all equivalent technical solutions also fall within the scope of the present application, and the scope of the present application is defined by the appended claims.

Claims

1. A blood oxygen information detection method is characterized by comprising the following steps:

in response to at least one part of a user body contacting a display screen, determining a target area on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea; the position relation between the first sending subregion and the first receiving subregion comprises relative distribution; the position relation between the second sending subregion and the second receiving subregion comprises relative distribution; when the first transmitting subregion and the first receiving subregion are distributed relatively, planes of the first transmitting subregion and the first receiving subregion are parallel to each other; when the second transmitting subarea and the second receiving subarea are distributed relatively, planes of the second transmitting subarea and the second receiving subarea are parallel to each other; the target area is related to a contact area of a user body and the display screen;

controlling the first transmitting subarea to transmit a first optical signal;

controlling the first receiving sub-area to receive a second optical signal after the first optical signal is transmitted;

controlling the second transmitting subarea to transmit a third optical signal;

controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is transmitted;

2. The method of claim 1, wherein said determining a target area on a display screen in response to at least a portion of a user's body contacting the display screen comprises:

3. The method of claim 1, wherein said determining a target area on a display screen in response to at least a portion of a user's body contacting the display screen comprises:

4. The method of claim 1, wherein the target region further comprises a spacer sub-region, the spacer sub-region being located between the first receive sub-region and the second receive sub-region.

5. The method of claim 1, wherein the first light signal employs green light and the third light signal employs red light.

6. The method of claim 1, wherein the display screen is a Light Emitting Diode (LED) screen.

7. A blood oxygenation information detection device, the device comprising:

the target area determining module is used for responding to at least one part of the body of the user contacting a display screen, and determining a target area on the display screen, wherein the target area comprises a first sending subarea, a first receiving subarea, a second sending subarea and a second receiving subarea; the position relation between the first sending subregion and the first receiving subregion comprises relative distribution; the position relation between the second sending subregion and the second receiving subregion comprises relative distribution; when the first transmitting subregion and the first receiving subregion are distributed relatively, planes of the first transmitting subregion and the first receiving subregion are parallel to each other; when the second transmitting subarea and the second receiving subarea are distributed relatively, planes of the second transmitting subarea and the second receiving subarea are parallel to each other; the target area is related to a contact area of a user body and the display screen;

the second control module is used for controlling the first receiving sub-area to receive a second optical signal after the first optical signal is transmitted;

the fourth control module is used for controlling the second receiving sub-area to receive a fourth optical signal after the third optical signal is transmitted;

8. The device of claim 7, wherein the target area determination module comprises:

9. The device of claim 7, wherein the target area determination module is configured to determine the target area on the display screen in response to the at least one portion of the user's body contacting the display screen and satisfying a predetermined trigger condition.

10. An electronic device characterized in that the electronic device comprises the blood oxygen information detection device of any one of claims 7 to 9.