CN113967015A - Blood oxygen detection method and device and computer readable storage medium - Google Patents
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Abstract
The application provides a blood oxygen detection method, a device and a computer readable storage medium, wherein the blood oxygen detection method comprises the following steps: when the electronic device is in a blood oxygen detection state, acquiring target force of a target user acting on the electronic device; determining a corresponding blood oxygen saturation calculation model based on the target strength; and inputting a PPG signal acquired by the PPG sensor into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation. Through the implementation of this application scheme, come to correspond according to the dynamics that the user acted on blood oxygen detection device and confirm oxyhemoglobin saturation computational model, carry out oxyhemoglobin saturation and calculate, effectively guaranteed the suitability of the oxyhemoglobin saturation computational model who adopts and detection device user state, improved blood oxygen detection result's accuracy.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a blood oxygen detection method, device and computer-readable storage medium.
Background
With the continuous improvement of the living standard of the user, the user pays more attention to the personal health, so that the user often has the requirement of tracking related health indexes in daily life. Among them, the blood oxygen saturation is a health index that is widely concerned by users.
Research shows that the light absorption coefficients of oxyhemoglobin and reduced hemoglobin in a red light spectrum region and an infrared light spectrum region are different, so that when blood oxygen detection is carried out, a sensor with double light-emitting diodes can be adopted to respectively emit red light and infrared light to a specific part (such as a finger) of a user to respectively detect the absorbance variation of the two lights, and then the blood oxygen saturation is measured and calculated through the ratio of the absorbance variation of the two lights and a specific blood oxygen saturation calculation model. However, in practical applications, only a single blood oxygen saturation calculation model is usually preset in related products, and the model is adopted in any blood oxygen detection scenario, so that the adaptability of the calculation model and the detection scenario is not considered, and the accuracy of the blood oxygen detection result is limited.
Disclosure of Invention
The embodiment of the application provides a blood oxygen detection method, a blood oxygen detection device and a computer readable storage medium, which can at least solve the problem that in the related art, the accuracy of a blood oxygen detection result is limited because the same blood oxygen saturation calculation model is adopted in different blood oxygen detection scenes.
The first aspect of the embodiments of the present application provides a blood oxygen detection method, which is applied to an electronic device provided with a PPG sensor, and includes:
when the electronic device is in a blood oxygen detection state, acquiring target force of a target user acting on the electronic device;
determining a corresponding blood oxygen saturation calculation model based on the target force;
and inputting a PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model to calculate the blood oxygen saturation.
The embodiment of the present application provides in a second aspect a blood oxygen detection device, which is applied to an electronic device provided with a PPG sensor, and includes:
the acquisition module is used for acquiring target force of a target user acting on the electronic device when the electronic device is in a blood oxygen detection state;
a determination module for determining a corresponding blood oxygen saturation calculation model based on the target force;
and the calculation module is used for inputting the PPG signals acquired by the PPG sensor into the blood oxygen saturation calculation model and calculating the blood oxygen saturation.
A third aspect of embodiments of the present application provides an electronic apparatus, including: the blood oxygen detection device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor implements the steps of the blood oxygen detection method provided by the first aspect of the embodiments of the present application when executing the computer program.
A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the blood oxygen detection method provided by the first aspect of the embodiments of the present application.
As can be seen from the above, according to the blood oxygen detection method, device and computer readable storage medium provided by the present application, when the electronic device is in a blood oxygen detection state, the target strength of the target user acting on the electronic device is obtained; determining a corresponding blood oxygen saturation calculation model based on the target strength; and inputting a PPG signal acquired by the PPG sensor into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation. Through the implementation of this application scheme, come to correspond according to the dynamics that the user acted on blood oxygen detection device and confirm oxyhemoglobin saturation computational model, carry out oxyhemoglobin saturation and calculate, effectively guaranteed the suitability of the oxyhemoglobin saturation computational model who adopts and detection device user state, improved blood oxygen detection result's accuracy.
Drawings
FIG. 1 is a schematic diagram illustrating a basic flow chart of a blood oxygen detection method according to a first embodiment of the present application;
fig. 2 is a schematic diagram of PPG signals of a finger acquired by a PPG sensor according to a first embodiment of the present application;
fig. 3 is a schematic flowchart of a method for generating a model dedicated for force calculation according to a first embodiment of the present application;
fig. 4 is a schematic flowchart of an information prompting method according to a first embodiment of the present application;
FIG. 5 is a schematic flowchart illustrating a detailed blood oxygen detection method according to a second embodiment of the present application;
FIG. 6 is a schematic diagram illustrating program modules of an apparatus for blood oxygen detection according to a third embodiment of the present application;
FIG. 7 is a schematic diagram illustrating program modules of another blood oxygen detection apparatus according to a third embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present application.
Detailed Description
In order to make the objects, features and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to solve the problem of limited accuracy of blood oxygen saturation detection results caused by using the same blood oxygen saturation calculation model in different blood oxygen detection scenes in the related art, a first embodiment of the present application provides a blood oxygen detection method, in which an electronic device provided with a photoplethysmography (PPG) sensor is a photoelectric sensor that optically obtains an organ plethysmogram, and the PPG sensor of this embodiment is configured with a dual led including a red led and an infrared led, and can be used to convert a reflected/transmitted light signal with blood oxygen saturation information at a tissue end (e.g., a finger, a toe, an earlobe, etc.) into an electrical signal. In addition, the electronic device of the embodiment may be a wearable device, such as a smart band, a smart watch, and the like.
Fig. 1 is a basic flowchart of the blood oxygen detection method provided in this embodiment, and the blood oxygen detection method includes the following steps:
Specifically, in this embodiment, when electronic device triggered the blood oxygen detection function, detect the dynamics that the user that uses electronic device at present acted on electronic device, this dynamics can be understood as the user and wear the dynamics when wearing for example intelligent bracelet.
And step 102, determining a corresponding blood oxygen saturation calculation model based on the target strength.
Specifically, in the embodiment, when the electronic device is in different use states, if the same blood oxygen saturation calculation model is adopted to adapt to all use scenarios, the accuracy of the detection result of the blood oxygen saturation is not high. Therefore, the embodiment respectively configures corresponding blood oxygen saturation calculation models for different detection use strengths so as to ensure the adaptability of blood oxygen detection and detection use scenes.
In some embodiments of this embodiment, determining the corresponding calculation model of blood oxygen saturation based on the target force comprises: determining a target strength interval to which the target strength belongs; and determining the blood oxygen saturation calculation model corresponding to the target force interval based on the mapping relation between the preset force interval and the blood oxygen saturation calculation model.
Specifically, in practical applications, considering that the specific values of the action strength of the user during blood oxygen detection using the electronic device are diversified, if a corresponding blood oxygen saturation calculation model is set for each specific value, this can result in a heavy workload on model configuration, especially for some situations where the numerical differences are slight, the blood oxygen saturation degree model has no substantial difference in practical application, based on this, the present embodiment can configure the blood oxygen saturation degree calculation model respectively for specific force interval, for example, the span of force values for a single force interval may be set to 5N, i.e., starting with the initial force value, one force interval per 5N interval, and then all the effective acting force degrees are distributed to a plurality of force intervals, so that only the blood oxygen saturation calculation model needs to be configured respectively aiming at each force interval, and the workload of model configuration can be effectively reduced.
And 103, inputting the PPG signal acquired by the PPG sensor into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation.
Specifically, when performing blood oxygen saturation measurement, the light emitting diode emits light with two different wavelengths, when an artery pulsation and a vein pulsation occur in a light transmitting region or a light reflecting region, absorption amounts of the artery blood and the vein blood to the light change accordingly, which is called an Alternating Current (AC) amount, absorption amounts of other tissues such as skin, muscle, and bone to the light are constant and called a Direct Current (DC) amount, the PPG sensor detects a light signal transmitted or reflected and converts the light signal into an electrical signal to be output, a signal output by the PPG sensor is processed to obtain a photoplethysmogram signal (PPG signal), and as shown in fig. 2, a schematic diagram of a PPG signal of a finger acquired by the PPG sensor is provided in this embodiment.
In some embodiments of the present embodiment, the PPG signal acquired by the PPG sensor is input to a blood oxygen saturation calculation model, and calculating the blood oxygen saturation includes: determining the ratio of the absorbance change of the red light and the infrared light based on a PPG signal acquired by a PPG sensor; and inputting the ratio of the absorbance variation into a blood oxygen saturation calculation model, and outputting the corresponding calculated blood oxygen saturation.
Specifically, in the present embodiment, the blood oxygen saturation calculation model includes a preset ratio of the amount of change in absorbance (R/IR value) to the blood oxygen saturation (SaO)2) The mapping relationship of (2) is generally a linear relationship. In practical use, HbO is due to oxygenated hemoglobin contained in blood2And hemoglobin Hb respectively have a certain ratio, namely oxygen content, the absorption coefficient of Hb is higher in a wavelength range of 600-800 nm, and HbO is higher in a wavelength range of 800-1000 nm2The absorption coefficient of (2) is higher, so that red light (600-800 nm) and infrared light (800-1000 nm) can be used for respectively detecting HbO2And the PPG signal of Hb, then calculate the corresponding ratio and bring the ratio into the determined blood oxygen saturation calculation model, thus obtaining the blood oxygen saturation value.
In some embodiments of this embodiment, obtaining the target force of the target user on the electronic device includes: acquiring a target signal characteristic of a PPG signal; and calculating the target force of the target user acting on the electronic device based on the target signal characteristics and the preset force calculation special model.
Specifically, in this embodiment, the force calculation dedicated model includes: a mapping of signal characteristics and strength corresponding to the target user. In the embodiment, the corresponding force calculation special model is configured in a targeted manner in consideration of the difference of user groups, and the action force of the user on the electronic device is calculated through the signal characteristics of the PPG signal and the corresponding determined force calculation special model, so that the accuracy of force calculation can be effectively improved. Of course, in practical applications, the action strength of the user can also be realized by other means, for example, by detecting through a pressure sensor.
As shown in fig. 3, which is a schematic flow chart of a method for generating a strength calculation dedicated model provided in this embodiment, in some embodiments of this embodiment, further before calculating a target strength of a target user acting on an electronic device based on a target signal characteristic and a preset strength calculation dedicated model, the method further includes the following steps:
301, analyzing correlations of PPG signals of preset test people under different forces and the different forces to generate a force calculation general model;
and step 303, combining the reference signal characteristics and the force calculation general model to generate a force calculation special model.
Specifically, the embodiment can collect blood oxygen data of different people and different force levels in batches, wherein each force level corresponds to a blood oxygen saturation calculation model; then analyzing the correlation between the blood oxygen data and different forces to generate a general model; when the user uses the electronic device for the first time, prompting the action strength of the user, and acquiring a reference PPG signal of the user under the corresponding action strength; and then combining the general model and the reference signal to generate a force calculation special model for the user. Therefore, when the PPG signal of the user is acquired subsequently, the action strength of the user can be judged by using the special strength calculation model, and then the final blood oxygen detection result is calculated by selecting the corresponding blood oxygen saturation calculation model.
As shown in fig. 4, which is a schematic flow chart of an information prompting method provided in this embodiment, in some embodiments of this embodiment, after inputting a PPG signal acquired by a PPG sensor to a blood oxygen saturation calculation model and calculating blood oxygen saturation, the method further specifically includes the following steps:
and step 403, outputting corresponding prompt information based on the health evaluation index.
Specifically, in the present embodiment, considering that some users have limited ability to interpret the blood oxygen saturation value, after obtaining the blood oxygen saturation, the blood oxygen saturation value is compared with a standard value, and then further health evaluation is performed based on the comparison result, and a health evaluation index is output, wherein one expression may be to prompt the user whether the blood oxygen detection result is normal or not and the degree of deviation from the normal value when the blood oxygen detection result is not normal, so that the user can intuitively grasp the health condition of the blood oxygen of the individual.
In some embodiments of this embodiment, after inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model and calculating the blood oxygen saturation, the method further includes: evaluating the effectiveness of the calculation result of the blood oxygen saturation; and if the evaluation result is invalid, inputting the PGG signal to a preset general blood oxygen saturation calculation model, and recalculating the blood oxygen saturation.
Specifically, in the present embodiment, after the blood oxygen saturation is calculated by the blood oxygen saturation calculation model associated with the user action strength, the effectiveness of the calculated result is further evaluated, so as to avoid outputting invalid data when the blood oxygen detection error is too large due to the influence of objective factors, which may cause unnecessary trouble to the user. When the detection result is determined to be invalid, the embodiment further performs blood oxygen saturation calculation again by using a preset general calculation model so as to ensure that the provided blood oxygen detection result has certain referential property and validity.
It should be noted that, in practical applications, the effectiveness evaluation method of the blood oxygen detection result includes, but is not limited to, the following two methods: firstly, considering that the blood oxygen saturation of the same user usually has certain regularity and relevance, the currently calculated blood oxygen saturation can be compared with the historical blood oxygen saturation of the user, and the validity of the current detection result is evaluated, if the deviation value of the two is obviously overlarge, the result is invalid, and it should be understood that the historical blood oxygen saturation can be the result of the last blood oxygen detection or the weighted average value of the previous detection results; secondly, it is also possible to directly compare the blood oxygen saturation with the regular blood oxygen saturation detection value interval and determine the validity thereof based on whether or not the current blood oxygen saturation deviates from the regular interval.
Based on the technical scheme of the embodiment of the application, when the electronic device is in a blood oxygen detection state, the target force of the target user acting on the electronic device is obtained; determining a corresponding blood oxygen saturation calculation model based on the target strength; and inputting a PPG signal acquired by the PPG sensor into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation. Through the implementation of this application scheme, come to correspond according to the dynamics that the user acted on blood oxygen detection device and confirm oxyhemoglobin saturation computational model, carry out oxyhemoglobin saturation and calculate, effectively guaranteed the suitability of the oxyhemoglobin saturation computational model who adopts and detection device user state, improved blood oxygen detection result's accuracy.
The method in fig. 5 is a refined blood oxygen detection method provided in the second embodiment of the present application, and the blood oxygen detection method includes:
and 501, analyzing the correlations of the PPG signals of the preset test population under different forces and different forces, and generating a force calculation general model.
Specifically, the embodiment can collect blood oxygen data of different people and different force levels in batches in advance, and each force level corresponds to one blood oxygen saturation calculation model; then analyzing the correlation between the blood oxygen data and different forces to generate a general model.
And 502, acquiring reference PPG signals of the target user under each prompting action force respectively, and analyzing corresponding reference signal characteristics.
And 503, combining the characteristics of each reference signal and the force calculation general model to generate a force calculation special model.
Specifically, in this embodiment, the force calculation dedicated model includes: a mapping of signal characteristics and strength corresponding to the target user. In the embodiment, when a user uses the electronic device for the first time, the action strength of the user is prompted, and a reference PPG signal of the user is acquired; and then combining the general model and the reference signal to generate a force calculation special model corresponding to the target user.
And step 504, when the electronic device is in a blood oxygen detection state, calculating target force of the target user acting on the electronic device based on the target signal characteristics and the force calculation special model of the PPG signal acquired by the PPG sensor.
Specifically, in the embodiment, a corresponding force calculation dedicated model is configured in a targeted manner in consideration of differences of user groups, and the acting force of the user on the electronic device is calculated through the signal features of the PPG signals and the corresponding determined force calculation dedicated model.
And 505, determining a corresponding blood oxygen saturation calculation model based on the target force interval to which the target force belongs.
Specifically, in the embodiment, it is considered that the specific values of the action strength when the user uses the electronic device to perform blood oxygen detection are diversified, and if the corresponding blood oxygen saturation calculation model is set for each specific value, the workload of model configuration is large, so that the blood oxygen saturation calculation models are configured for specific strength intervals.
And step 506, inputting the PPG signal into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation.
Specifically, the embodiment correspondingly determines the blood oxygen saturation calculation model according to the force of the user acting on the blood oxygen detection device, performs blood oxygen saturation calculation, effectively ensures the adaptability of the adopted blood oxygen saturation calculation model and the use state of the detection device, and improves the accuracy of the blood oxygen detection result.
Specifically, in the embodiment, it is considered that the interpretation capability of some users on the blood oxygen saturation value is limited, so that after the blood oxygen saturation is obtained, the blood oxygen saturation is compared with the standard value, then the blood oxygen health evaluation is further performed based on the comparison result, and the health evaluation index is output, so that the users can intuitively grasp the personal blood oxygen health condition.
It should be understood that, the size of the serial number of each step in this embodiment does not mean the execution sequence of the step, and the execution sequence of each step should be determined by its function and inherent logic, and should not be limited uniquely to the implementation process of the embodiment of the present application.
The embodiment of the application discloses a blood oxygen detection method, which comprises the steps of acquiring target force of a target user acting on an electronic device when the electronic device is in a blood oxygen detection state; determining a corresponding blood oxygen saturation calculation model based on the target strength; and inputting a PPG signal acquired by the PPG sensor into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation. Through the implementation of this application scheme, come to correspond according to the dynamics that the user acted on blood oxygen detection device and confirm oxyhemoglobin saturation computational model, carry out oxyhemoglobin saturation and calculate, effectively guaranteed the suitability of the oxyhemoglobin saturation computational model who adopts and detection device user state, improved blood oxygen detection result's accuracy.
Fig. 6 is a blood oxygen detecting device according to a third embodiment of the present application. The blood oxygen detecting device can be used for realizing the blood oxygen detecting method in the foregoing embodiments. As shown in fig. 6, the blood oxygen detecting device mainly includes:
an obtaining module 601, configured to obtain a target force of a target user acting on an electronic device when the electronic device is in a blood oxygen detection state;
a determining module 602, configured to determine a corresponding blood oxygen saturation calculation model based on the target strength;
and the calculation module 603 is configured to input the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model, and calculate the blood oxygen saturation.
In some embodiments of this embodiment, the obtaining module 601 is specifically configured to: acquiring a target signal characteristic of a PPG signal; calculating the target force of the target user acting on the electronic device based on the target signal characteristics and a preset force calculation special model; wherein, the special model for force calculation comprises: a mapping of signal characteristics and strength corresponding to the target user.
Fig. 7 shows another blood oxygen detecting device provided in this embodiment, further, in some embodiments of this embodiment, the blood oxygen detecting device further includes: a generating module 604 for: before calculating target force of a target user acting on an electronic device based on target signal characteristics and a preset force calculation special model, analyzing the correlation between PPG signals of preset test people under different forces and different forces to generate a force calculation general model; respectively acquiring reference PPG signals of a target user under each prompting action force, and analyzing corresponding reference signal characteristics; and combining the reference signal characteristics and the force calculation general model to generate a force calculation special model.
In some embodiments of this embodiment, the calculating module 603 is specifically configured to: determining the ratio of the absorbance change of the red light and the infrared light based on a PPG signal acquired by a PPG sensor; inputting the ratio of the absorbance variable quantity into a blood oxygen saturation calculation model, and outputting the corresponding calculated blood oxygen saturation; the blood oxygen saturation calculation model comprises a preset mapping relation between the ratio of absorbance variation and the blood oxygen saturation.
In some embodiments of this embodiment, the determining module 602 is specifically configured to: determining a target strength interval to which the target strength belongs; and determining the blood oxygen saturation calculation model corresponding to the target force interval based on the mapping relation between the preset force interval and the blood oxygen saturation calculation model.
Referring to fig. 7 again, in some embodiments of the present invention, the blood oxygen detecting device further includes: an output module 605, configured to compare the blood oxygen saturation with a standard blood oxygen saturation after inputting the PPG signal acquired by the PPG sensor to a blood oxygen saturation calculation model and calculating the blood oxygen saturation; generating a corresponding health evaluation index according to the comparison result; and outputting corresponding prompt information based on the health evaluation indexes.
Referring to fig. 7 again, in another embodiment of the present invention, the blood oxygen detecting device further includes: and the evaluation module 606 is used for performing calculation result validity evaluation on the blood oxygen saturation after inputting the PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model and calculating the blood oxygen saturation. Correspondingly, the calculating module 603 is further configured to: and if the evaluation result is invalid, inputting the PGG signal to a preset general blood oxygen saturation calculation model, and recalculating the blood oxygen saturation.
It should be noted that the blood oxygen detection methods in the first and second embodiments can be implemented based on the blood oxygen detection device provided in this embodiment, and persons of ordinary skill in the art can clearly understand that, for convenience and brevity of description, the specific working process of the blood oxygen detection device described in this embodiment may refer to the corresponding process in the foregoing method embodiments, and details are not repeated herein.
According to the blood oxygen detection device provided by the embodiment, when the electronic device is in a blood oxygen detection state, the target force of a target user acting on the electronic device is obtained; determining a corresponding blood oxygen saturation calculation model based on the target strength; and inputting a PPG signal acquired by the PPG sensor into a blood oxygen saturation calculation model, and calculating the blood oxygen saturation. Through the implementation of this application scheme, come to correspond according to the dynamics that the user acted on blood oxygen detection device and confirm oxyhemoglobin saturation computational model, carry out oxyhemoglobin saturation and calculate, effectively guaranteed the suitability of the oxyhemoglobin saturation computational model who adopts and detection device user state, improved blood oxygen detection result's accuracy.
Referring to fig. 8, fig. 8 is an electronic device according to a fourth embodiment of the present disclosure. The electronic device can be used for implementing the blood oxygen detection method in the foregoing embodiments. As shown in fig. 8, the electronic device mainly includes:
a memory 801, a processor 802, a bus 803, and computer programs stored on the memory 801 and executable on the processor 802, the memory 801 and the processor 802 being connected by the bus 803. The processor 802, when executing the computer program, implements the blood oxygen detection method in the foregoing embodiments. Wherein the number of processors may be one or more.
The Memory 801 may be a high-speed Random Access Memory (RAM) Memory or a non-volatile Memory (non-volatile Memory), such as a disk Memory. The memory 801 is used to store executable program code, and the processor 802 is coupled to the memory 801.
Further, an embodiment of the present application also provides a computer-readable storage medium, where the computer-readable storage medium may be provided in an electronic device in the foregoing embodiments, and the computer-readable storage medium may be the memory in the foregoing embodiment shown in fig. 8.
The computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the blood oxygen detection method in the foregoing embodiments. Further, the computer-readable storage medium may be various media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a RAM, a magnetic disk, or an optical disk.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a readable storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned readable storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description of the blood oxygen detection method, device and computer readable storage medium provided by the present application will be apparent to those skilled in the art from the following description, wherein changes may be made in the embodiments and applications of the invention according to the spirit of the embodiments.
Claims (10)
1. A blood oxygen detection method is applied to an electronic device provided with a photoplethysmography (PPG) sensor, and is characterized by comprising the following steps:
when the electronic device is in a blood oxygen detection state, acquiring target force of a target user acting on the electronic device;
determining a corresponding blood oxygen saturation calculation model based on the target force;
and inputting a PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model to calculate the blood oxygen saturation.
2. The blood oxygen detection method according to claim 1, wherein the obtaining of the target force of the target user acting on the electronic device comprises:
acquiring a target signal characteristic of the PPG signal;
calculating the target force of the target user acting on the electronic device based on the target signal characteristics and a preset force calculation special model; wherein, the force calculation special model comprises: and mapping relation between signal characteristics and strength corresponding to the target user.
3. The blood oxygen detection method according to claim 2, wherein before calculating the target strength of the target user acting on the electronic device based on the target signal characteristics and the predetermined strength calculation dedicated model, further comprising:
analyzing the correlation between PPG signals of a preset test population under different forces and the different forces, and generating a force calculation general model;
respectively acquiring reference PPG signals of a target user under each prompting action force, and analyzing corresponding reference signal characteristics;
and combining the reference signal characteristics and the force calculation general model to generate the force calculation special model.
4. The blood oxygen detection method according to claim 1, wherein the inputting the PPG signals acquired by the PPG sensors to the blood oxygen saturation calculation model, the calculating of the blood oxygen saturation comprises:
determining a ratio of absorbance change of red light to infrared light based on a PPG signal acquired by the PPG sensor;
inputting the ratio of the absorbance variable quantity into the blood oxygen saturation calculation model, and outputting the corresponding calculated blood oxygen saturation; wherein the blood oxygen saturation calculation model comprises a mapping relation between preset absorbance variation and blood oxygen saturation.
5. The blood oxygen detection method of claim 1, wherein said determining a corresponding blood oxygen saturation calculation model based on said target strength comprises:
determining a target strength interval to which the target strength belongs;
and determining a blood oxygen saturation calculation model corresponding to the target force interval based on the mapping relation between the preset force interval and the blood oxygen saturation calculation model.
6. The blood oxygen detection method according to any one of claims 1 to 5, wherein the inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model further comprises, after calculating the blood oxygen saturation:
comparing the blood oxygen saturation with a standard blood oxygen saturation;
generating a corresponding health evaluation index according to the comparison result;
and outputting corresponding prompt information based on the health evaluation index.
7. The blood oxygen detection method according to any one of claims 1 to 5, wherein the inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model further comprises, after calculating the blood oxygen saturation:
performing calculation result validity evaluation on the blood oxygen saturation;
and if the evaluation result is invalid, inputting the PGG signal to a preset general blood oxygen saturation calculation model, and recalculating the blood oxygen saturation.
8. The utility model provides a blood oxygen detection device, is applied to the electron device who is provided with the PPG sensor, its characterized in that includes:
the acquisition module is used for acquiring target force of a target user acting on the electronic device when the electronic device is in a blood oxygen detection state;
a determination module for determining a corresponding blood oxygen saturation calculation model based on the target force;
and the calculation module is used for inputting the PPG signals acquired by the PPG sensor into the blood oxygen saturation calculation model and calculating the blood oxygen saturation.
9. An electronic device, comprising: a memory, a processor, and a bus;
the bus is used for realizing connection communication between the memory and the processor;
the processor is configured to execute a computer program stored on the memory;
the processor, when executing the computer program, performs the steps of the method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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| CN107595296A (en) * | 2017-09-19 | 2018-01-19 | 广东乐心医疗电子股份有限公司 | Blood oxygen saturation detection method and blood oxygen detection device for eliminating motion interference |
| CN109512392A (en) * | 2018-12-05 | 2019-03-26 | 深圳技术大学（筹） | Calculation method, system and the storage medium of oxygen saturation measurement confidence level |
| WO2019213874A1 (en) * | 2018-05-09 | 2019-11-14 | 高驰运动科技(深圳)有限公司 | Blood oxygen saturation measurement method and device, smart wearable device |
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| CN107595296A (en) * | 2017-09-19 | 2018-01-19 | 广东乐心医疗电子股份有限公司 | Blood oxygen saturation detection method and blood oxygen detection device for eliminating motion interference |
| WO2019213874A1 (en) * | 2018-05-09 | 2019-11-14 | 高驰运动科技(深圳)有限公司 | Blood oxygen saturation measurement method and device, smart wearable device |
| CN109512392A (en) * | 2018-12-05 | 2019-03-26 | 深圳技术大学（筹） | Calculation method, system and the storage medium of oxygen saturation measurement confidence level |
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