CN111657875B - Blood oxygen testing method, device and storage medium thereof - Google Patents
Blood oxygen testing method, device and storage medium thereof Download PDFInfo
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
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- 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 or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
- A61B5/14542—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue for measuring blood gases
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- 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
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Abstract
The application relates to a blood oxygen testing method, a blood oxygen testing device and a storage medium thereof, wherein the method comprises the following steps: s1: the blood oxygen sensor is naturally attached to the wrist skin, a water film is filled between the blood oxygen sensor and the wrist skin to be in a standard state, and the reading of the blood oxygen sensor in the standard state is obtained as a standard reading Z; s2: pressing and rotating the blood oxygen sensor in a standard state to enable the blood oxygen sensor to be in a pressing state of sinking into the epidermis of the wrist, and acquiring the reading of the blood oxygen sensor in the pressing state as a pressing reading Y; and, S3: calculate difference reading C = press reading Y-standard reading Z, calculate fit reading N = standard reading Z-2 difference reading C. The application has the effect of improving the data accuracy of the blood oxygen sensor.
Description
Technical Field
The present application relates to the field of blood sample testing, and in particular, to a blood oxygen testing method, device and storage medium thereof.
Background
Blood oxygen is oxygen in blood, the normal oxygen content of a human body is about 90%, the higher the oxygen content in the blood is, the better the metabolism of the human body is, and the too low oxygen supply of the organism can be caused. Since oxygen is required for all cells in the human body, most functions of the body are affected by abnormal blood oxygen content, and therefore, the clinical application of the blood oxygen saturation detection in medicine, surgery, intensive care unit, etc. is very common.
The existing professional blood oxygen detection devices are usually expensive, so in daily life, people wear some wearable devices integrated with blood oxygen detection functions, such as a bracelet. Present wearable equipment of intelligence, what technically adopted also is many light sources integration technique, and it is just one of them to use red blood oxygen, has solved the difficult problem of wrist blood oxygen measurement, possesses very strong practicality in daily blood oxygen detection.
With respect to the related art in the above, the inventors consider that: when the user wore the bracelet, after being stained with external moisture or producing the sweat on the bracelet between sensor and the skin, there was the loss when light broke through the region between sensor and the skin on the bracelet to have the defect that reduces and detect the precision.
Disclosure of Invention
In order to improve the blood oxygen detection precision after external moisture is stained between the sensor and the skin or sweat is generated, the application provides a blood oxygen testing method, a device and a storage medium thereof.
In a first aspect, the present application provides a blood oxygen testing method, which adopts the following technical scheme:
a blood oxygen test method is based on a blood oxygen sensor worn on a wrist, the blood oxygen sensor is naturally attached to the skin of the wrist, and no water film is arranged between the blood oxygen sensor and the skin of the wrist as a reference state, and the method comprises the following steps:
s1: the blood oxygen sensor is naturally attached to the wrist skin, a water film is filled between the blood oxygen sensor and the wrist skin to be in a standard state, and the reading of the blood oxygen sensor in the standard state is obtained as a standard reading Z;
s2: pressing and rotating the blood oxygen sensor in a standard state to enable the blood oxygen sensor to be in a pressing state of sinking into the epidermis of the wrist, and acquiring the reading of the blood oxygen sensor in the pressing state as a pressing reading Y; and the number of the first and second groups,
s3: calculate difference reading C = press reading Y-standard reading Z, calculate fit reading N = standard reading Z-2 difference reading C.
By adopting the above technical scheme, the reading under the reference condition is the reading of minimum error, and the reading that has the water film and not press is the reading of maximum error, because water and impurity in the water film can increase the loss of light, press blood oxygen sensor when having the water film, extrude some water and impurity with physical means, let the water film attenuation, reduce the loss of light, improve reading accuracy, simultaneously, rotate blood oxygen sensor, let the impurity in the water film distribute more evenly, further reduce blood oxygen sensor's error, and rotate sensor when pressing, can let the water film overcome the tension of water, soak the gap between every hair on human skin surface, further reduce the thickness of water film and not let light pass in and out different media many times simultaneously, reduce the loss of light once more, improve blood oxygen sensor's data accuracy.
Preferably, the method further comprises the steps of:
s4: acquiring the reading of the blood oxygen sensor in a reference state as a reference reading J;
s5: pressing and rotating the blood oxygen sensor in the reference state to enable the blood oxygen sensor to be in a calibration state of sinking into the epidermis of the wrist, and acquiring the reading of the blood oxygen sensor in the calibration state as a calibration reading J1;
s6: repeating steps S1-S3; and the number of the first and second groups,
s7: calculate calibration error W = calibration reading J1-reference reading J, calculate calibration difference C1= difference reading C-calibration error W, calculate fit reading N1= standard reading Z-2 × difference reading C1.
Through adopting above-mentioned technical scheme, press and to produce local blood unsmooth, can reduce local blood oxygen, press and rotate the error degree that blood oxygen sensor can obtain when not having the water film during the reference state, do benefit to and reduce the data error that presses and bring, improve the data precision that reduces standard state.
Preferably, a water absorption band surrounding the blood oxygen sensor is arranged around the blood oxygen sensor, and the surface of the water absorption band protrudes out of the surface of the blood oxygen sensor, and the method comprises the following steps:
s8: repeating the steps S4-S7M times, and repeating the steps S1-S3M 1 times to obtain M N1 and M1N; and the number of the first and second groups,
s9: the final reading N2= (M × N1+ M1 × N)/(M + M1) is calculated.
By adopting the technical scheme, the data when the blood oxygen sensor enters the standard state from the reference state is measured and fused to obtain the final reading, the sensor error caused by the change of the moisture of the blood oxygen sensor after the temperature change is reduced, and the data precision is improved.
Preferably, the step S8 further includes:
m + M1 < M2, M2 is the number of times of measurement of equal period in a set time, M2 < 5, M < 2.
By adopting the technical scheme, the data within the set measuring frequency range are utilized, and the accuracy of the data is not influenced by excessive adopted data.
In a second aspect, the present application provides a blood oxygen testing device, which adopts the following technical solutions:
the utility model provides a blood oxygen testing arrangement, is based on wearing the blood oxygen sensor on the wrist, and blood oxygen sensor nature is attached on the wrist epidermis and do not have the water film between and be the benchmark state, includes following module:
the standard reading module is used for acquiring the reading of the blood oxygen sensor in a standard state as a standard reading Z, and the blood oxygen sensor is naturally attached to the wrist skin and filled with a water film in the middle as the standard state;
the pressing reading module is used for prompting a user to press and rotate the blood oxygen sensor in a standard state, so that the blood oxygen sensor is in a pressing state of sinking into the wrist watch skin, and the reading of the blood oxygen sensor in the pressing state is obtained as a pressing reading Y; and the number of the first and second groups,
and a calculation fitting module for calculating the difference reading C = the press reading Y-the standard reading Z, and calculating the fitting reading N = the standard reading Z-2 + the difference reading C.
By adopting the technical scheme, the reading in the reference state is the reading with the minimum error, the reading of the standard reading module is the reading with the maximum error, because water and impurities in the water film increase the loss of light, the reading of the pressing and reading module is a reading with improved precision, when the blood oxygen sensor is pressed when a water film exists, part of water and impurities are extruded out by a physical means, so that the water film is thinned, the light loss is reduced, the reading accuracy is improved, meanwhile, the blood oxygen sensor is rotated, so that the impurities in the water film are distributed more uniformly, the error of the blood oxygen sensor is further reduced, and rotate the sensor when pressing, can let the water film overcome the tension of water, soak the gap between every hair on human skin surface, further reduce the thickness of water film and do not let light pass in and out different media many times simultaneously, reduce the loss of light once more, calculate the data accuracy that fitting module can improve blood oxygen sensor.
Preferably, the device further comprises the following modules:
the reference reading module is used for taking the reading of the blood oxygen sensor as a reference reading J under the condition of obtaining a reference state;
the calibration reading module is used for prompting a user to press and rotate the blood oxygen sensor in a reference state, so that the blood oxygen sensor is in a calibration state of being sunken into the wrist watch skin, and the reading of the blood oxygen sensor in the calibration state is acquired as a calibration reading J1;
the repeated execution module is used for repeatedly executing the standard reading module, the pressing reading module and the calculation fitting module; and the number of the first and second groups,
a calibration fitting module for calculating a calibration error W = calibration reading J1-reference reading J, a calibration difference C1= difference reading C-calibration error W, and a fitting reading N1= standard reading Z-2 x difference reading C1.
Through adopting above-mentioned technical scheme, press and to produce local blood unsmooth, can reduce local blood oxygen, press and rotate the error degree that blood oxygen sensor can obtain when not having the water film during the reference state, do benefit to and reduce the data error that presses down and bring under the reduction of reduction standard state, calibration fitting module further improves the data precision.
Preferably, a water absorption belt surrounding the blood oxygen sensor is arranged around the blood oxygen sensor, the surface of the water absorption belt protrudes out of the surface of the blood oxygen sensor, and the device further comprises the following modules:
the repeated circulation module is used for repeating the execution of the reference reading module, the calibration reading module, the repeated execution module and the calibration fitting module for M times, and then repeating the execution of the repeated execution module for M1 times to obtain M N1 and M1N; and the number of the first and second groups,
a final reading module to calculate a final reading N2= (M × N1+ M1 × N)/(M + M1).
By adopting the technical scheme, the data when the blood oxygen sensor enters the standard state from the reference state is measured and fused by the repeated circulation module, the final reading module obtains the final reading, the error of the blood oxygen sensor after temperature change caused by moisture change is reduced, and the data precision is improved.
Preferably, the recirculation module further comprises:
m + M1 < M2, M2 is the number of times of measurement of equal period in a set time, M2 < 5, M < 2.
By adopting the technical scheme, the data within the set measuring frequency range are utilized, and the accuracy of the data is not influenced by excessive adopted data.
In a third aspect, the present application provides a computer storage medium, which adopts the following technical solutions:
a computer readable storage medium storing a computer program capable of being loaded by a processor and executing any of the above blood oxygen testing methods.
In summary, the present application includes at least one of the following beneficial technical effects: the reading under the reference state is the minimum reading of error, and the reading that has the water film and not press is the biggest reading of error, because water and impurity in the water film can increase the loss of light, press blood oxygen sensor when having the water film, extrude part of water and impurity with the physical means, let the water film attenuation, reduce the loss of light, improve the reading degree of accuracy, press and to produce local blood unobstructed, can reduce local blood oxygen, press and rotate the error degree when blood oxygen sensor can obtain not having the water film during the reference state, do benefit to and reduce the data error that the standard state dropped and press and bring. Rotate blood oxygen sensor and let the impurity distribution in the water film ground more even, rotate the sensor and can let the water film overcome the tension of water when pressing, soak the gap between every hair on human skin surface, further reduce the thickness of water film and do not let light pass in and out different media many times simultaneously, reduce the loss of light once more. And measuring and fusing data when the blood oxygen sensor enters the standard state from the reference state to obtain a final reading, reducing the self error of the sensor after the temperature change caused by the moisture change of the blood oxygen sensor, and improving the data precision.
Drawings
FIG. 1 is a schematic flow chart of the blood oxygen testing method of the present application.
Fig. 2 is a block diagram of the blood oxygen testing device according to the present application.
Reference numerals: 1. a standard reading module; 2. a pressing and reading module; 3. calculating a fitting module; 4. a reference reading module; 5. a calibration reading module; 6. a repeat execution module; 7. calibrating the fitting module; 8. a recirculation module; 9. and a final reading module.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiments of the present application will be described in further detail with reference to the drawings attached hereto.
The embodiment of the application discloses a blood oxygen testing method, as shown in fig. 1, based on a blood oxygen sensor worn on a wrist, the blood oxygen sensor is embedded in a watch or a bracelet and is in contact with the skin on the surface of the wrist. Watch or bracelet inboard also embedded fixedly connected with annular or curved area that absorbs water, the blood oxygen absorbs water and takes and surround blood oxygen sensor, and the surface that absorbs water the area protrudes slightly in blood oxygen sensor's surface, and can not make blood oxygen sensor break away from wrist skin surface. The blood oxygen sensor is naturally attached to the skin of the wrist, and no water film is between the blood oxygen sensor and the skin of the wrist as a reference state. The water film can be formed by external water entering between the blood oxygen sensor and the skin or sweat secreted by sweat glands under the skin, and the water film contains water and impurities and is generally unevenly distributed.
The method comprises the following steps:
s1: the blood oxygen sensor is naturally attached to the wrist skin, a water film is filled between the blood oxygen sensor and the wrist skin to be in a standard state, and the reading of the blood oxygen sensor in the standard state is obtained as a standard reading Z.
S2: and in the standard state, the blood oxygen sensor is pressed and rotated, the blood oxygen sensor is in a pressing state of sinking into the epidermis of the wrist, and the reading of the blood oxygen sensor in the pressing state is obtained as a pressing reading Y. The error of Y is less than Z.
S3: calculate difference reading C = press reading Y-standard reading Z, calculate fit reading N = standard reading Z-2 difference reading C. The error of C is less than Z.
S4: and acquiring the reading of the blood oxygen sensor in the reference state as a reference reading J. The error of J is minimal.
S5: and when in the reference state, the blood oxygen sensor is pressed and rotated, so that the blood oxygen sensor is in a calibration state of being sunken into the epidermis of the wrist, and the reading of the blood oxygen sensor in the calibration state is obtained as a calibration reading J1. J1's error is greater than J and is less than Z, presses and can produce local blood unsmooth, can reduce local blood oxygen, presses and rotates blood oxygen sensor when benchmark state and can obtain the error degree when not having the water film for reduce the standard state and descend to press the data error that brings.
S6: repeating steps S1-S3;
s7: calculate calibration error W = calibration reading J1-reference reading J, calculate calibration difference C1= difference reading C-calibration error W, calculate fit reading N1= standard reading Z-2 × difference reading C1. Because the state of the human body and the deviation of the blood oxygen sensor are different along with the difference of the pressing force and the temperature, the error of N1 is larger than J and smaller than J1 or the error of N1 is larger than J1 and smaller than Z.
S8: after repeating the steps S4-S7M times, repeating the steps S1-S3M 1 times to obtain M N1 and M1N, wherein M + M1 is less than M2, M2 is the measurement times of an equal period in a set time, M2 is less than 5, and M is less than 2, and the data in the set measurement time range is utilized to prevent the accuracy of the data from being influenced by excessive data.
And the number of the first and second groups,
s9: the final reading N2= (M × N1+ M1 × N)/(M + M1) is calculated.
The implementation principle of the blood oxygen test in the embodiment of the application is as follows: the reading in the reference state is the reading with the smallest error, while the reading with the water film and not pressed is the reading with the largest error, because water and impurities in the water film increase the loss of light. When a water film formed by sweat exists, the blood oxygen sensor is pressed, part of water and impurities are extruded by a physical means, or the water and the impurities enter a water absorption belt, the water film is thinned, the light loss is reduced, part of the water and the impurities are extruded, or the water and the impurities enter the water absorption belt, the water film is thinned, and the light loss is reduced. When a water film formed by external water is pressed, the blood oxygen sensor is pressed, the water absorption belt absorbs water firstly before being extruded by a physical means, the water absorption belt is stressed to release water during extrusion, part of water enters the water film, the water film is fully soaked between the blood oxygen sensor and the skin, and part of water is extruded out of the space between the watch and the water ring; after no longer squeezing, the water absorption belt can absorb water again, thereby absorbing away the moisture between the blood oxygen sensor and the skin, being beneficial to improving the data precision of the next pressing test, and the more the times are pressed within the set time range, the more accurate the data is.
Still rotate blood oxygen sensor when pressing, make the impurity in the water film distribute ground more evenly, can also let the water film overcome the tension of water, soak the gap between every hair on human skin surface, do not let light pass in and out different media many times, reduce the loss of light once more. And measuring and fusing data when the blood oxygen sensor enters the standard state from the reference state to obtain a final reading, reducing the self error of the sensor after the temperature change caused by the moisture change of the blood oxygen sensor, and improving the data precision.
The embodiment of this application still discloses a blood oxygen testing arrangement, as shown in fig. 2, based on wearing the blood oxygen sensor on the wrist, blood oxygen sensor nature is attached on the wrist epidermis and does not have the water film between and be the benchmark state, includes following module:
the standard reading module 1 is used for acquiring the reading of the blood oxygen sensor in a standard state as a standard reading Z, and the blood oxygen sensor is naturally attached to the surface skin of the wrist and filled with a water film in the middle to be in the standard state;
the pressing reading module 2 is used for prompting a user to press and rotate the blood oxygen sensor in a standard state, so that the blood oxygen sensor is in a pressing state of sinking into the wrist watch skin, and the reading of the blood oxygen sensor in the pressing state is obtained as a pressing reading Y; and the number of the first and second groups,
and a calculation fitting module 3 for calculating the difference reading C = the press reading Y-the standard reading Z, and calculating the fitting reading N = the standard reading Z-2 + the difference reading C.
The reference reading module 4 is used for taking the reading of the blood oxygen sensor in the reference state as a reference reading J;
the calibration reading module 5 is used for prompting a user to press and rotate the blood oxygen sensor in a reference state, so that the blood oxygen sensor is in a calibration state of being sunken into the wrist watch skin, and the reading of the blood oxygen sensor in the calibration state is obtained as a calibration reading J1;
the repeated execution module 6 is used for repeatedly executing the standard reading module 1, the pressing reading module 2 and the calculation fitting module 3; and the number of the first and second groups,
a calibration fitting module 7 for calculating the calibration error W = calibration reading J1-reference reading J, calculating the calibration difference C1= difference reading C-calibration error W, calculating the fitted reading N1= standard reading Z-2 x difference reading C1.
Be provided with the area that absorbs water that surrounds blood oxygen sensor around blood oxygen sensor, the surface protrusion in blood oxygen sensor's surface that absorbs water the area, the device still includes following module:
and the repeated circulation module 8 is configured to repeat the execution of the reference reading module 4, the calibration reading module 5, the repeated execution module 6, and the calibration fitting module 7M times, and then repeat the execution of the repeated execution module 6M 1 times, so as to obtain M N1 and M1N. M + M1 < M2, M2 is the number of times of measurement of equal period in a set time, M2 < 5, M < 2.
And the number of the first and second groups,
a final reading module 9 for calculating a final reading N2= (M × N1+ M1 × N)/(M + M1).
The present application further provides a computer readable storage medium, which stores a computer program capable of being loaded by a processor and executing the above-mentioned blood oxygen testing method.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. The utility model provides a blood oxygen test method, is based on wearing the blood oxygen sensor on the wrist, and blood oxygen sensor nature is attached on the wrist epidermis and do not have the water film between and be the benchmark state, its characterized in that: the method comprises the following steps:
s1: the blood oxygen sensor is naturally attached to the wrist skin, a water film is filled between the blood oxygen sensor and the wrist skin to be in a standard state, and the reading of the blood oxygen sensor in the standard state is obtained as a standard reading Z;
s2: pressing and rotating the blood oxygen sensor in a standard state to enable the blood oxygen sensor to be in a pressing state of sinking into the epidermis of the wrist, and acquiring the reading of the blood oxygen sensor in the pressing state as a pressing reading Y; and the number of the first and second groups,
s3: calculating a difference reading C = press reading Y-standard reading Z, calculating a fit reading N = standard reading Z-2 x difference reading C;
the method further comprises the following steps:
s4: acquiring the reading of the blood oxygen sensor in a reference state as a reference reading J;
s5: pressing and rotating the blood oxygen sensor in the reference state to enable the blood oxygen sensor to be in a calibration state of sinking into the epidermis of the wrist, and acquiring the reading of the blood oxygen sensor in the calibration state as a calibration reading J1;
s6: repeating steps S1-S3; and the number of the first and second groups,
s7: calculating the calibration error W = calibration reading J1-reference reading J, calculating the calibration difference C1= difference reading C-calibration error W, calculating the fit reading N1= standard reading Z-2 × difference reading C1;
a water absorption belt surrounding the blood oxygen sensor is arranged around the blood oxygen sensor, the surface of the water absorption belt protrudes out of the surface of the blood oxygen sensor, and the method comprises the following steps:
s8: repeating the steps S4-S7M times, and repeating the steps S1-S3M 1 times to obtain M N1 and M1N; and the number of the first and second groups,
s9: the final reading N2= (M × N1+ M1 × N)/(M + M1) is calculated.
2. The method of claim 1, wherein: the step S8 further includes:
m + M1 < M2, M2 is the number of times of measurement of equal period in a set time, M2 < 5, M < 2.
3. The utility model provides a blood oxygen testing arrangement, is based on wearing the blood oxygen sensor on the wrist, and blood oxygen sensor nature is attached on the wrist epidermis and do not have the water film between and be the benchmark state, its characterized in that: the system comprises the following modules:
the standard reading module (1) is used for acquiring the reading of the blood oxygen sensor in a standard state as a standard reading Z, the blood oxygen sensor is naturally attached to the wrist skin, and a water film is filled between the blood oxygen sensor and the wrist skin to be in the standard state;
the pressing reading module (2) is used for prompting a user to press and rotate the blood oxygen sensor in a standard state, so that the blood oxygen sensor is in a pressing state of sinking into the wrist watch skin, and the reading of the blood oxygen sensor in the pressing state is obtained as a pressing reading Y; and the number of the first and second groups,
a calculation fitting module (3) for calculating a difference reading C = a press reading Y-a standard reading Z, calculating a fit reading N = a standard reading Z-2 x the difference reading C;
the device also comprises the following modules:
the reference reading module (4) is used for taking the reading of the blood oxygen sensor in a reference state as a reference reading J;
the calibration reading module (5) is used for prompting a user to press and rotate the blood oxygen sensor in the reference state, so that the blood oxygen sensor is in a calibration state of being sunken into the wrist watch skin, and the reading of the blood oxygen sensor in the calibration state is acquired as a calibration reading J1;
the repeated execution module (6) is used for repeatedly executing the standard reading module (1), the pressing reading module (2) and the calculation fitting module (3); and the number of the first and second groups,
a calibration fitting module (7) for calculating a calibration error W = calibration reading J1-reference reading J, a calibration difference C1= difference reading C-calibration error W, a fitting reading N1= standard reading Z-2 difference reading C1;
be provided with around blood oxygen sensor and surround blood oxygen sensor's the area that absorbs water, the surface protrusion in blood oxygen sensor's surface of the area that absorbs water, the device still includes following module:
a repeating cycle module (8) for repeating the executing reference reading module (4), the calibration reading module (5), the repeating executing module (6) and the calibration fitting module (7) for M times, and then repeating the executing repeating executing module (6) for M1 times to obtain M N1 and M1N; and the number of the first and second groups,
a final reading module (9) for calculating a final reading N2= (M × N1+ M1 × N)/(M + M1).
4. The apparatus of claim 3, wherein: the repeated circulation module (8) further comprises:
m + M1 < M2, M2 is the number of times of measurement of equal period in a set time, M2 < 5, M < 2.
5. A computer-readable storage medium characterized by: a computer program which can be loaded by a processor and which executes the method according to any of claims 1 to 2.
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