CN113967015B - Blood oxygen detection method, device and computer readable storage medium - Google Patents
Blood oxygen detection method, device and computer readable storage medium Download PDFInfo
- Publication number
- CN113967015B CN113967015B CN202010708868.2A CN202010708868A CN113967015B CN 113967015 B CN113967015 B CN 113967015B CN 202010708868 A CN202010708868 A CN 202010708868A CN 113967015 B CN113967015 B CN 113967015B
- Authority
- CN
- China
- Prior art keywords
- blood oxygen
- oxygen saturation
- target
- force
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000008280 blood Substances 0.000 title claims abstract description 245
- 210000004369 blood Anatomy 0.000 title claims abstract description 245
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 244
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 244
- 239000001301 oxygen Substances 0.000 title claims abstract description 244
- 238000001514 detection method Methods 0.000 title claims abstract description 88
- 238000004364 calculation method Methods 0.000 claims abstract description 120
- 238000000034 method Methods 0.000 claims description 21
- 238000011156 evaluation Methods 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 16
- 230000036541 health Effects 0.000 claims description 16
- 238000013507 mapping Methods 0.000 claims description 12
- 238000002835 absorbance Methods 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 description 34
- 238000010586 diagram Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 108010054147 Hemoglobins Proteins 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 2
- 108010064719 Oxyhemoglobins Proteins 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 210000000624 ear auricle Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000013186 photoplethysmography Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
- A61B5/14552—Details of sensors specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Physiology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Cardiology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Psychiatry (AREA)
- Signal Processing (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
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 on the electronic device; determining a corresponding blood oxygen saturation calculation model based on the target force; and inputting a PPG signal acquired by a PPG sensor into a blood oxygen saturation calculation model to calculate the blood oxygen saturation. By implementing the scheme of the application, the blood oxygen saturation calculation model is correspondingly determined according to the force of the user acting on the blood oxygen detection device, and the blood oxygen saturation calculation is carried out, so that the suitability of the adopted blood oxygen saturation calculation model and the use state of the detection device is effectively ensured, and the accuracy of the blood oxygen detection result is improved.
Description
Technical Field
The present application relates to the field of electronic technology, and in particular, to a blood oxygen detection method, apparatus, and computer readable storage medium.
Background
Along with the continuous improvement of the living standard of the user, the user pays attention to the personal health, so that the user often has the requirement of tracking related health indexes in daily life. Among them, blood oxygen saturation is a health index which is widely paid attention to by users.
The research shows that the oxyhemoglobin and the reduced hemoglobin have different light absorption coefficients in the red light spectrum region and the infrared light spectrum region, 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 specific parts (such as fingers) of a user so as to respectively detect the absorbance change amounts of the two lights, and then the blood oxygen saturation is calculated by the ratio of the absorbance change amounts of the two lights and a specific blood oxygen saturation calculation model. However, in practical application, the related product is usually preset with only a single blood oxygen saturation calculation model, and the model is adopted in any blood oxygen detection scene, so that the suitability of the calculation model and the detection scene 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 at least can solve the problem of limited accuracy of blood oxygen detection results caused by the fact that the same blood oxygen saturation calculation model is adopted in different blood oxygen detection scenes in the related technology.
A first aspect of an embodiment of the present application provides a blood oxygen detection method applied to an electronic device provided with a PPG sensor, including:
when the electronic device is in a blood oxygen detection state, acquiring target force of a target user on the electronic device;
Determining a corresponding blood oxygen saturation calculation model based on the target force;
and inputting the PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model to calculate the blood oxygen saturation.
A second aspect of an embodiment of the present application provides an oxygen detecting apparatus applied to an electronic apparatus provided with a PPG sensor, including:
The acquisition module is used for acquiring the target force of a target user on the electronic device when the electronic device is in the blood oxygen detection state;
the determining module is used for determining a corresponding blood oxygen saturation computing model based on the target force;
and the calculation module is used for inputting the PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model to calculate the blood oxygen saturation.
A third aspect of an embodiment of the present application provides an electronic device, including: the blood oxygen detection method comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the steps in the blood oxygen detection method provided by the first aspect of the embodiment of the application are realized when the processor executes the computer program.
A fourth aspect of the embodiment of the present application provides a computer readable storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements each step in the blood oxygen detection method provided in the first aspect of the embodiment 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 force of the target user on the electronic device is obtained; determining a corresponding blood oxygen saturation calculation model based on the target force; and inputting a PPG signal acquired by a PPG sensor into a blood oxygen saturation calculation model to calculate the blood oxygen saturation. By implementing the scheme of the application, the blood oxygen saturation calculation model is correspondingly determined according to the force of the user acting on the blood oxygen detection device, and the blood oxygen saturation calculation is carried out, so that the suitability of the adopted blood oxygen saturation calculation model and the use state of the detection device is effectively ensured, and the accuracy of the blood oxygen detection result is improved.
Drawings
Fig. 1 is a schematic flow chart of a blood oxygen detection method according to a first embodiment of the present application;
Fig. 2 is a schematic diagram of a PPG signal of a finger acquired by a PPG sensor according to a first embodiment of the present application;
FIG. 3 is a flowchart of a method for generating a model dedicated to force calculation according to a first embodiment of the present application;
fig. 4 is a flow chart of an information prompting method according to a first embodiment of the present application;
fig. 5 is a detailed flow chart of a blood oxygen detection method according to a second embodiment of the present application;
FIG. 6 is a schematic diagram of a program module of a blood oxygen detecting device according to a third embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a program module of another blood oxygen monitor 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 application more comprehensible, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In order to solve the defect that in the related art, the same blood oxygen saturation calculation model is adopted in different blood oxygen detection scenes, so that the accuracy of blood oxygen detection results is limited, a first embodiment of the present application provides a blood oxygen detection method, an electronic device provided with a photoplethysmography (PPG, photoplethysmograph) sensor, wherein the PPG sensor is a photoelectric sensor for optically acquiring an organ plethysmogram, and the PPG sensor of the present embodiment is configured with a dual light emitting diode including a red light emitting diode and an infrared light emitting diode, and can be used to convert a reflected/transmitted light signal with blood oxygen saturation information of a tissue end (such as a finger, toe, earlobe, etc.) into an electrical signal. In addition, the electronic device of the embodiment may be a wearable device, such as a smart bracelet, a smart watch, or the like.
Fig. 1 is a basic flowchart of a blood oxygen detection method according to the present embodiment, where the blood oxygen detection method includes the following steps:
Step 101, when the electronic device is in a blood oxygen detection state, acquiring target force of a target user on the electronic device.
Specifically, in this embodiment, when the electronic device triggers the blood oxygen detection function, the force applied to the electronic device by the user currently using the electronic device is detected, and the force may be understood as the wearing force when the user wears, for example, a smart bracelet.
Step 102, determining a corresponding blood oxygen saturation calculation model based on the target force.
Specifically, in this 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 blood oxygen saturation detection result will be low. Therefore, the embodiment configures corresponding blood oxygen saturation calculation models according to different detection using force degrees respectively so as to ensure the suitability of blood oxygen detection and detection using scenes.
In some implementations of the present embodiment, determining the corresponding blood oxygen saturation calculation model based on the target force includes: determining a target strength section 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 application, considering that the specific values of action force are diversified when a user uses an electronic device to perform blood oxygen detection, if a corresponding blood oxygen saturation calculation model is set for each specific value, the model configuration workload is larger, particularly, for the situation that some value differences are subtle, the blood oxygen saturation models have no substantial differences in practical application, based on the fact, the blood oxygen saturation calculation models can be respectively configured for specific force intervals, for example, the force value span of a single force interval can be set to 5N, that is, from an initial force value, one force interval is taken every 5N, then all effective action force is distributed to a plurality of force intervals, so that the blood oxygen saturation calculation models are only required to be respectively configured for each force interval, and the model configuration workload can be effectively reduced.
Step 103, inputting a PPG signal acquired by a PPG sensor into a blood oxygen saturation calculation model to calculate the blood oxygen saturation.
Specifically, when the blood oxygen saturation is measured, the light emitting diode emits two light with different wavelengths, when the arterial blood vessel beats and the venous blood vessel beats in the light transmission area or the light reflection area, the absorption amount of the arterial blood and the venous blood to the light changes along with the pulse, which is called Alternating Current (AC), while the absorption of other tissues such as skin, muscle, bone and the like to the light is constant, which is called Direct Current (DC), the PPG sensor detects the transmitted or reflected light signal and converts the transmitted or reflected light signal into an electrical signal to output, and the signal output by the PPG sensor is processed to obtain a photoplethysmogram signal (PPG signal), as shown in fig. 2, which is a schematic diagram of a PPG signal of a finger collected by the PPG sensor in this embodiment.
In some implementations of the present embodiment, inputting the PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model, calculating the blood oxygen saturation includes: determining the ratio of the absorbance variation of red light to infrared light based on the PPG signal acquired by the PPG sensor; the ratio of the absorbance change amounts is input to the blood oxygen saturation calculation model, and the calculated blood oxygen saturation is output.
Specifically, in the present embodiment, the blood oxygen saturation calculation model includes a mapping relationship between a preset ratio of absorbance change amounts (R/IR values) and blood oxygen saturation (SaO 2), and generally, the functional relationship between the two is a linear relationship. In practical application, because the oxyhemoglobin HbO 2 and the hemoglobin Hb contained in the blood have a certain proportion, namely oxygen content, and the absorption coefficient of HbO 2 is higher in a wavelength interval of 600-800 nm, and the absorption coefficient of HbO 2 is higher in a wavelength interval of 800-1000 nm, the PPG signals of HbO 2 and Hb can be detected respectively by using red light (600-800 nm) and infrared light (800-1000 nm), and then the corresponding ratio is calculated and is brought into a determined blood oxygen saturation calculation model, so that the blood oxygen saturation value is obtained.
In some implementations of this embodiment, obtaining the target force of the target user on the electronic device includes: acquiring target signal characteristics of the PPG signal; and calculating the target force of the target user on the electronic device based on the target signal characteristics and a preset force calculation special model.
Specifically, in this embodiment, the dynamics calculation dedicated model includes: and mapping relation between signal characteristics and strength corresponding to the target user. According to the embodiment, the corresponding strength calculation special model is configured in a targeted manner in consideration of the difference of the user groups, and the acting strength of the user on the electronic device is calculated through the signal characteristics of the PPG signals and the corresponding determined strength calculation special model, so that the accuracy of strength calculation can be effectively improved. Of course, in practical application, the action force of the user can be realized in other ways, for example, the action force can be detected by a pressure sensor.
Fig. 3 is a schematic flow chart of a method for generating a special model for calculating dynamics according to the present embodiment, and in some embodiments, before calculating a target dynamics of a target user acting on an electronic device based on a target signal feature and a preset special model for calculating dynamics, the method further specifically includes the following steps:
Step 301, analyzing the correlation between PPG signals of a preset test crowd under different intensities and the different intensities, and generating an intensity calculation general model;
step 302, acquiring a reference PPG signal of a target user under each prompting action force, and analyzing corresponding reference signal characteristics;
step 303, combining the reference signal characteristics and the general model for calculating the dynamics, and generating a model special for calculating the dynamics.
Specifically, the embodiment can collect blood oxygen data of different people and different forces in batches, and each force corresponds to one blood oxygen saturation calculation model; then analyzing the correlation between 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 force of the user, and acquiring a reference PPG signal of the user under the corresponding action force; and then combining the general model and the reference signal to generate a special model for calculating the dynamics of the user. Therefore, when the PPG signal of the user is obtained later, the action force of the user can be judged by utilizing the force calculation special model, and then the corresponding blood oxygen saturation calculation model is selected to calculate the final blood oxygen detection result.
Fig. 4 is a schematic flow chart of an information prompting method provided in this embodiment, in some implementations of this embodiment, after inputting a PPG signal collected by a PPG sensor into a blood oxygen saturation calculation model, the method further specifically includes the following steps:
Step 401, comparing the blood oxygen saturation level with a standard blood oxygen saturation level;
Step 402, generating corresponding health evaluation indexes according to the comparison result;
And step 403, outputting corresponding prompt information based on the health evaluation index.
Specifically, in this embodiment, considering that the interpretation capability of a part of users on the blood oxygen saturation value is limited, after obtaining the blood oxygen saturation, the blood oxygen saturation is compared with a standard value, and then health evaluation is further performed based on the comparison result, and a health evaluation index is output, wherein one expression form may be to prompt the user whether the blood oxygen detection result is normal or not, and the deviation degree from the normal value when the blood oxygen detection result is abnormal, so that the user can intuitively grasp the individual blood oxygen health condition.
In some implementations of the present embodiment, after inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model, calculating the blood oxygen saturation further includes: carrying out calculation result validity evaluation on blood oxygen saturation; if the evaluation result is invalid, inputting the PGG signal into a preset general blood oxygen saturation calculation model, and recalculating the blood oxygen saturation.
Specifically, in this embodiment, after the blood oxygen saturation is calculated by the blood oxygen saturation calculation model related to the action force of the user, the validity of the calculated result is further evaluated, so as to avoid outputting invalid data when the blood oxygen detection error is too large and the user is unnecessarily bothered. When the detection result is determined to be invalid, the embodiment further adopts a preset general calculation model to calculate the blood oxygen saturation again so as to ensure that the provided blood oxygen detection result has certain referenceability and effectiveness.
It should be noted that, in practical applications, the methods for evaluating the validity of the blood oxygen detection result include, but are not limited to, the following two methods: firstly, considering that the blood oxygen saturation of the same user usually has certain regularity and relevance, so that the currently calculated blood oxygen saturation can be compared with the historical blood oxygen saturation of the user, the validity of the current detection result can be evaluated, if the deviation value of the currently calculated blood oxygen saturation and the historical blood oxygen saturation is obviously overlarge, the explanation is invalid, and it is understood that the historical blood oxygen saturation can be the result of the previous blood oxygen detection or can be the weighted average value of the previous multiple detection results; secondly, the blood oxygen saturation level can be directly compared with a conventional blood oxygen saturation level detection value interval, and the validity of the blood oxygen saturation level can be determined based on whether the current blood oxygen saturation level deviates from the conventional interval.
Based on the technical scheme of the embodiment of the application, when the electronic device is in the blood oxygen detection state, the target force of a target user on the electronic device is obtained; determining a corresponding blood oxygen saturation calculation model based on the target force; and inputting a PPG signal acquired by a PPG sensor into a blood oxygen saturation calculation model to calculate the blood oxygen saturation. By implementing the scheme of the application, the blood oxygen saturation calculation model is correspondingly determined according to the force of the user acting on the blood oxygen detection device, and the blood oxygen saturation calculation is carried out, so that the suitability of the adopted blood oxygen saturation calculation model and the use state of the detection device is effectively ensured, and the accuracy of the blood oxygen detection result is improved.
The method in fig. 5 is a refined blood oxygen detection method according to a second embodiment of the present application, where the blood oxygen detection method includes:
Step 501, analyzing correlations of PPG signals of a preset test crowd under different intensities with different intensities, and generating an intensity calculation general model.
Specifically, in the embodiment, blood oxygen data of different people and different forces can be collected in batches in advance, and each force corresponds to a blood oxygen saturation calculation model; and then analyzing the correlation between blood oxygen data and different forces to generate a general model.
Step 502, collecting reference PPG signals of the target user under each prompting action force, and analyzing corresponding reference signal characteristics.
Step 503, combining the reference signal features and the general model for calculating the dynamics, and generating a model special for calculating the dynamics.
Specifically, in this embodiment, the dynamics calculation dedicated model includes: and mapping relation between signal characteristics and strength corresponding to the target user. When a user uses the electronic device for the first time, the embodiment prompts the user action strength, and obtains a reference PPG signal of the user; and then combining the general model and the reference signal to generate a dynamics calculation special model corresponding to the target user.
Step 504, calculating a specific model based on the target signal characteristics and the strength of the PPG signal acquired by the PPG sensor when the electronic device is in the blood oxygen detection state, and calculating the target strength of the target user on the electronic device.
Specifically, in this embodiment, the corresponding dynamics calculation dedicated model is configured in a targeted manner in consideration of the difference of the user population, and the user's acting dynamics on the electronic device is calculated through the signal characteristics of the PPG signal and the determined dynamics calculation dedicated model.
Step 505, determining a corresponding blood oxygen saturation calculation model based on a target strength section to which the target strength belongs.
Specifically, in this embodiment, considering that the specific values of the action force when the user uses the electronic device to perform blood oxygen detection are diversified, if a corresponding blood oxygen saturation calculation model is set for each specific value, the model configuration workload is large, so that the blood oxygen saturation calculation models are respectively configured for specific force intervals.
Step 506, inputting the PPG signal to a blood oxygen saturation calculation model to calculate 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, calculates the blood oxygen saturation, effectively ensures the suitability 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.
Step 507, outputting a corresponding health evaluation index based on the calculated blood oxygen saturation and the standard blood oxygen saturation.
Specifically, in this embodiment, the interpretation capability of a part of 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 a standard value, and then blood oxygen health evaluation is further performed based on the comparison result, and a health evaluation index is output, so that the user can intuitively grasp the individual blood oxygen health condition.
It should be understood that, the sequence number of each step in this embodiment does not mean the order of execution of the steps, and the execution order of each step should be determined by its functions and internal logic, and should not be construed as a unique limitation on 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 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 force; and inputting a PPG signal acquired by a PPG sensor into a blood oxygen saturation calculation model to calculate the blood oxygen saturation. By implementing the scheme of the application, the blood oxygen saturation calculation model is correspondingly determined according to the force of the user acting on the blood oxygen detection device, and the blood oxygen saturation calculation is carried out, so that the suitability of the adopted blood oxygen saturation calculation model and the use state of the detection device is effectively ensured, and the accuracy of the blood oxygen detection result is improved.
Fig. 6 is a schematic diagram of a blood oxygen detecting device according to a third embodiment of the present application. The blood oxygen detecting device can be used to realize the blood oxygen detecting method in the foregoing embodiment. As shown in fig. 6, the blood oxygen detecting apparatus mainly includes:
the obtaining module 601 is configured to obtain a target force of a target user on the 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 computing model based on the target strength;
the calculating module 603 is configured to input a PPG signal collected by the PPG sensor into a blood oxygen saturation calculating model, and calculate the blood oxygen saturation.
In some implementations of the present embodiment, the obtaining module 601 is specifically configured to: acquiring target signal characteristics of the PPG signal; calculating a target force of a target user on the electronic device based on the target signal characteristics and a preset force calculation special model; wherein, dynamics calculation special model includes: and mapping relation between signal characteristics and strength corresponding to the target user.
As shown in fig. 7, another blood oxygen detecting apparatus provided in this embodiment, further, in some implementations of this embodiment, the blood oxygen detecting apparatus further includes: a generating module 604, configured to: before calculating the target force of a target user on the electronic device based on the target signal characteristics and a preset force calculation special model, analyzing the correlation between PPG signals of a preset test crowd under different forces and the different forces to generate a force calculation general model; collecting a reference PPG signal of a target user under each prompting action force respectively, and analyzing corresponding reference signal characteristics; and combining the reference signal characteristics and the dynamics calculation general model to generate a dynamics calculation special model.
In some implementations of the present embodiment, the computing module 603 is specifically configured to: determining the ratio of the absorbance variation of red light to infrared light based on the PPG signal acquired by the PPG sensor; inputting the ratio of the absorbance variation to a blood oxygen saturation calculation model, and outputting the calculated blood oxygen saturation; the blood oxygen saturation calculation model comprises a mapping relation between a preset ratio of absorbance variation and blood oxygen saturation.
In some implementations of the present embodiment, the determining module 602 is specifically configured to: determining a target strength section 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 again to fig. 7, in some implementations of the present embodiment, the blood oxygen detection device further includes: the output module 605 is configured to compare the blood oxygen saturation with a standard blood oxygen saturation after inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model and calculating the blood oxygen saturation; generating corresponding health evaluation indexes according to the comparison result; and outputting corresponding prompt information based on the health evaluation index.
Referring again to fig. 7, in other implementations of the present embodiment, the blood oxygen detection device further includes: the evaluation module 606 is configured to perform a validity evaluation on the calculation result of the blood oxygen saturation after inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model and calculating the blood oxygen saturation. Correspondingly, the computing module 603 is further configured to: if the evaluation result is invalid, inputting the PGG signal into 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 may be implemented based on the blood oxygen detection device provided in the present embodiment, and those skilled 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 the present embodiment may refer to the corresponding process in the foregoing method embodiment, which is 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 on the electronic device is obtained; determining a corresponding blood oxygen saturation calculation model based on the target force; and inputting a PPG signal acquired by a PPG sensor into a blood oxygen saturation calculation model to calculate the blood oxygen saturation. By implementing the scheme of the application, the blood oxygen saturation calculation model is correspondingly determined according to the force of the user acting on the blood oxygen detection device, and the blood oxygen saturation calculation is carried out, so that the suitability of the adopted blood oxygen saturation calculation model and the use state of the detection device is effectively ensured, and the accuracy of the blood oxygen detection result is improved.
Referring to fig. 8, fig. 8 is a schematic diagram of an electronic device according to a fourth embodiment of the application. The electronic device can be used for realizing the blood oxygen detection method in the previous embodiment. As shown in fig. 8, the electronic device mainly includes:
A memory 801, a processor 802, a bus 803, and a computer program stored on the memory 801 and executable on the processor 802, the memory 801 and the processor 802 being connected by the bus 803. When the processor 802 executes the computer program, the blood oxygen detection method in the foregoing embodiment is implemented. Wherein the number of processors may be one or more.
The memory 801 may be a high-speed random access memory (RAM, random Access Memory) memory or a non-volatile memory (non-volatile memory), such as a disk memory. The memory 801 is used for storing executable program codes, and the processor 802 is coupled to the memory 801.
Further, an embodiment of the present application further provides a computer readable storage medium, which may be provided in the electronic device in each of the foregoing embodiments, and the computer readable storage medium may be a 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 embodiment. Further, the computer-readable medium may be any medium capable of storing a program code, such as a usb (universal serial bus), a removable hard disk, a Read-Only Memory (ROM), a RAM, a magnetic disk, or an optical disk.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions of actual implementation, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules illustrated as separate components may or may not be physically separate, and components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed over 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 this embodiment.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.
The integrated modules, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a readable storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned readable storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
It should be noted that, for the sake of simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily all required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
The foregoing describes a blood oxygen detection method, apparatus and computer readable storage medium according to the present application, and those skilled in the art will recognize that there are variations in terms of the specific embodiments and application scope of the present application according to the concepts of the embodiments of the present application.
Claims (6)
1. A blood oxygen detection method applied to an electronic device provided with a PPG sensor, comprising:
When the electronic device is in a blood oxygen detection state, acquiring target force of a target user on the electronic device; the obtaining the target force of the target user acting on the electronic device comprises the following steps:
Acquiring target signal characteristics of the PPG signal;
Analyzing the correlation between PPG signals of preset test groups under different intensities and the different intensities to generate an intensity calculation general model;
collecting a reference PPG signal of a target user under each prompting action force respectively, and analyzing corresponding reference signal characteristics;
Combining the reference signal characteristics and the dynamics calculation general model to generate a dynamics calculation special model;
Calculating the target force of a target user on the electronic device based on the target signal characteristics and a preset force calculation special model; wherein the dynamics calculation specific model comprises: mapping relation between signal characteristics and strength corresponding to the target user;
Determining a corresponding blood oxygen saturation calculation model based on the target force; the blood oxygen saturation calculation model is determined based on a force interval, and the force interval is divided based on initial force values; the determining a corresponding blood oxygen saturation calculation model based on the target force comprises:
Determining a target strength section to which the target strength belongs;
Determining a blood oxygen saturation calculation model corresponding to the target force interval based on a mapping relation between a preset force interval and the blood oxygen saturation calculation model;
Inputting the PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model to calculate blood oxygen saturation;
performing calculation result validity evaluation on the blood oxygen saturation;
If the evaluation result is invalid, inputting the PPG signal into a preset general blood oxygen saturation calculation model, and recalculating the blood oxygen saturation.
2. The method according to claim 1, wherein inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model, calculating blood oxygen saturation includes:
Determining the ratio of the absorbance variation of red light to infrared light based on the PPG signal acquired by the PPG sensor;
inputting the ratio of the absorbance variation to the blood oxygen saturation calculation model, and outputting the calculated blood oxygen saturation; the blood oxygen saturation calculation model comprises a preset mapping relation between the ratio of absorbance variation and blood oxygen saturation.
3. The method according to any one of claims 1 to 2, wherein the inputting the PPG signal acquired by the PPG sensor to the blood oxygen saturation calculation model, after calculating the blood oxygen saturation, further includes:
Comparing the blood oxygen saturation with a standard blood oxygen saturation;
generating corresponding health evaluation indexes according to the comparison result;
and outputting corresponding prompt information based on the health evaluation index.
4. An blood oxygen detection device applied to an electronic device provided with a PPG sensor, characterized by comprising:
the acquisition module is used for acquiring the target force of a target user on the electronic device when the electronic device is in the blood oxygen detection state; the obtaining the target force of the target user acting on the electronic device comprises the following steps:
Acquiring target signal characteristics of the PPG signal;
Analyzing the correlation between PPG signals of preset test groups under different intensities and the different intensities to generate an intensity calculation general model;
collecting a reference PPG signal of a target user under each prompting action force respectively, and analyzing corresponding reference signal characteristics;
Combining the reference signal characteristics and the dynamics calculation general model to generate a dynamics calculation special model;
Calculating the target force of a target user on the electronic device based on the target signal characteristics and a preset force calculation special model; wherein the dynamics calculation specific model comprises: mapping relation between signal characteristics and strength corresponding to the target user;
The determining module is used for determining a corresponding blood oxygen saturation computing model based on the target force; the blood oxygen saturation calculation model is determined based on a force interval, and the force interval is divided based on initial force values; the determining a corresponding blood oxygen saturation calculation model based on the target force comprises:
Determining a target strength section to which the target strength belongs;
Determining a blood oxygen saturation calculation model corresponding to the target force interval based on a mapping relation between a preset force interval and the blood oxygen saturation calculation model;
The calculation module is used for inputting the PPG signal acquired by the PPG sensor into the blood oxygen saturation calculation model to calculate blood oxygen saturation;
performing calculation result validity evaluation on the blood oxygen saturation;
If the evaluation result is invalid, inputting the PPG signal into a preset general blood oxygen saturation calculation model, and recalculating the blood oxygen saturation.
5. An electronic device, comprising: memory, processor, and bus;
the bus is used for realizing connection communication between the memory and the processor;
the processor is used for executing the computer program stored on the memory;
the processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 3.
6. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010708868.2A CN113967015B (en) | 2020-07-22 | 2020-07-22 | Blood oxygen detection method, device and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010708868.2A CN113967015B (en) | 2020-07-22 | 2020-07-22 | Blood oxygen detection method, device and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113967015A CN113967015A (en) | 2022-01-25 |
| CN113967015B true CN113967015B (en) | 2024-05-14 |
Family
ID=79584731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010708868.2A Active CN113967015B (en) | 2020-07-22 | 2020-07-22 | Blood oxygen detection method, device and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113967015B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-07-22 CN CN202010708868.2A patent/CN113967015B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2020114191A1 (en) * | 2018-12-05 | 2020-06-11 | 深圳技术大学 | Blood oxygen saturation measurement confidence calculation method, system, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113967015A (en) | 2022-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mejia-Mejia et al. | Photoplethysmography signal processing and synthesis | |
| RU2652071C2 (en) | Device and method for determining the blood oxygen saturation of a subject | |
| EP1861000B1 (en) | Method and device for determining the perfusion of blood in a body member | |
| EP3383256B1 (en) | Systems and methods for detecting photoplethysmographic device usage | |
| US9913588B2 (en) | Method and system for screening of atrial fibrillation | |
| US9788793B2 (en) | Method and system to identify motion artifacts and improve reliability of measurements and alarms in photoplethysmographic measurements | |
| US8855749B2 (en) | Determination of a physiological parameter | |
| CN107920786B (en) | Pulse oximetry | |
| US11517223B2 (en) | Apparatus and method for estimating blood glucose | |
| Yang et al. | Estimation and validation of arterial blood pressure using photoplethysmogram morphology features in conjunction with pulse arrival time in large open databases | |
| US20140187883A1 (en) | Systems and methods for ensemble averaging in pulse oximetry | |
| EP3928690A1 (en) | Method and apparatus for assessing peripheral arterial tone | |
| CN115988985A (en) | Device and method for compensating for the assessment of peripheral arterial tone | |
| KR20190029889A (en) | Apparatus and method for estimating bio-information | |
| Kanawade et al. | Photoplethysmography based arrhythmia detection and classification | |
| WO2020160058A1 (en) | Systems and methods for computationally efficient non-invasive blood quality measurement | |
| JP6918394B1 (en) | Biological information calculation system | |
| CN113967015B (en) | Blood oxygen detection method, device and computer readable storage medium | |
| JP2022133921A (en) | Biological information calculation system and server | |
| Lutin et al. | Learning based quality indicator aiding heart rate estimation in wrist-worn PPG | |
| JP5432848B2 (en) | Pulse photometer and pulse rate identification method | |
| CN116649969B (en) | Blood oxygen saturation measuring device, apparatus and storage medium | |
| US20240016396A1 (en) | Biometric information computing system | |
| CN112932475B (en) | Method and device for calculating blood oxygen saturation, electronic equipment and storage medium | |
| US20230309932A1 (en) | Biometric information computing system, server, and data structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |