CN112346554A - Method for controlling oximeter based on human body posture recognition technology - Google Patents
Method for controlling oximeter based on human body posture recognition technology Download PDFInfo
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- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
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- 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
- A61B5/14542—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 for measuring blood gases
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
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- G06F1/32—Means for saving power
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- G06F1/3234—Power saving characterised by the action undertaken
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- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
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Abstract
The invention discloses a method for controlling an oximeter based on a human posture recognition technology, wherein an acceleration sensor is arranged on the oximeter, and the method comprises the following steps: acquiring acceleration information sensed by the acceleration sensor; determining posture information of a human body part wearing the oximeter according to the acceleration information; and controlling the display work of a display screen of the oximeter according to the posture information.
Description
Technical Field
The invention relates to the technical field of control, in particular to a method for controlling an oximeter based on a human posture recognition technology.
Background
An oximeter is an instrument for conveniently measuring data of pulse rate, blood oxygen saturation, perfusion index, etc. of a human body. The usage rate of the oximeters in hospitals and needles is high, one or more oximeters are usually used in a hospital bed, and doctors or nurses can know the blood oxygen information of patients by looking at the oximeters. Current oximetry, oximetry only can show towards a direction, when looking over blood oxygen information, look over the people and must turn to suitable angle with the face and just can look over, use some inconveniences.
Disclosure of Invention
The invention provides a method for controlling an oximeter based on a human body posture recognition technology.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for controlling an oximeter based on a human body posture recognition technology according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an angle between a first ray and a second ray according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating the rotation of the display direction according to the embodiment of the present invention;
fig. 4 is a schematic view of various angles of the oximeter in the embodiment of the present invention.
Detailed Description
In the method for controlling an oximeter based on a human posture recognition technology provided by the embodiments of the present invention, an acceleration sensor is disposed on a blood sample meter, as shown in fig. 1, the method includes steps S1-S3:
step S1, acquiring acceleration information sensed by an acceleration sensor;
step S2, determining the posture information of the human body part wearing the oximeter according to the acceleration information;
and step S3, controlling the display work of the display screen of the oximeter according to the posture information.
The beneficial effects of the above technical scheme are: through setting up acceleration sensor on the oximetry, obtain the gesture information of wearing the human position of oximetry, according to the demonstration work of the display screen of gesture information control oximetry again, realize the intelligent control to the demonstration operation of oximetry, the person of facilitating the use looks over blood oxygen data.
In one embodiment, the step S2 "determining the posture information of the part of the human body wearing the oximeter based on the acceleration information" may be implemented as:
denoising the acceleration information to obtain denoised acceleration information;
and determining the posture information of the human body part wearing the oximeter according to the denoised acceleration information.
The beneficial effects of the above technical scheme are: the acceleration information is subjected to denoising processing, so that the accuracy of the posture information of the human body part can be improved, and the accuracy of controlling the display work of the oximeter is finally improved.
In one embodiment, the step S3 "controlling the display operation of the display screen of the oximeter according to the posture information" may be implemented as:
and when the posture information shows that the human body part is placed according to a preset mode, controlling the display screen to start display work so as to display the blood oxygen information currently detected by the oximeter. Wherein the preset mode is that the included angle between the human body part and the horizontal plane is within the range of the preset included angle; the preset included angle range is [0, 30] degrees.
The beneficial effects of the above technical scheme are: when the human body part is placed according to the preset mode, the human body part is shown to be in a more relaxed state, and the measurement accuracy of the blood oxygen data can be ensured.
In another embodiment, a light intensity sensor and a camera are arranged on the outer surface of a shell of the oximeter, wherein the shell is provided with a display screen; the step S3 "controlling the display operation of the display screen of the oximeter according to the posture information" may be implemented as follows:
when the posture information shows that the human body part is placed according to a preset mode, acquiring a light intensity signal detected by a light intensity sensor;
when the light intensity signal is equal to or less than the preset light intensity, the fact that the display screen is shielded by the shielding object is indicated, at this time, the appropriate time for reading the blood oxygen information is not available, at this time, the display screen is controlled to stop displaying, and the electric quantity of the oximeter can be saved;
when the light intensity signal is greater than the preset light intensity, starting a camera to shoot;
acquiring a video shot by a camera, and judging whether the video comprises a face image frame, wherein the face image frame refers to a frame comprising a face;
when the video comprises the face image frames, judging whether all the face image frames comprise at least N continuous face image frames; n is a preset integer, and the numerical value of N can be 10 or more;
when all the face image frames comprise at least N continuous face image frames, it is indicated that a person is continuously observing the display screen of the oximeter, at this time, the display screen can be controlled to start display work, and the display direction of the display screen is controlled according to a preset display direction control method.
The beneficial effects of the above technical scheme are: the starting or non-starting of the display screen can be controlled through the strength of the light intensity signal, so that the purpose of saving the electric quantity of the oximeter is achieved; furthermore, whether a person is looking up the oximeter at present can be intelligently judged by judging the face image frame, so that whether the display screen is started can be controlled, that is, the display screen can be started to work only when no shelter blocks the display screen of the oximeter and a person is looking up the display screen of the oximeter; when the two conditions are not met simultaneously, the display work of the display screen cannot be started, so that the purpose of saving electric quantity is achieved, and the viewing requirement can be met.
The preset display direction control method can be implemented as follows:
selecting at least one frame from at least N continuous human face image frames as a target frame; for example, the last frame of at least N consecutive face image frames may be used as the target frame, so that the finally determined first ray is more consistent with the direction of the current face, thereby improving the adaptability between the final display direction and the current face;
determining an angle between the first ray and the second ray according to the target frame (as shown in fig. 2, OB denotes the first ray, AC denotes the second ray, AB' denotes a parallel line of the first ray, a denotes an angle, which is close to 180 degrees, 001 denotes a display screen, 002 denotes a nose, and 003 denotes an eye); the first ray is a ray which takes the middle point between the two eyes of the face in the target frame as a starting point and passes through the nose tip; the second ray is a ray which takes the middle point of the reference edge of the display screen as a starting point and passes through the middle point of the opposite edge of the reference edge; the pointed direction of the second ray is the default display direction of the display screen;
and adjusting the display direction of the display screen according to the included angle.
The "adjusting the display direction of the display screen according to the included angle" can be implemented as the following method one:
rotating the default display direction of the display screen by an included angle to enable the rotated display direction to be consistent with the pointed direction of the first ray;
and performing display operation according to the rotated display direction.
As shown in fig. 3, taking the example shown in fig. 2 as an example, after the display direction is rotated by an angle α, if the display screen is not rotated, and the display direction is not rotated, the display direction of the display content "100" is shown as the left display screen in fig. 3; after the display direction is rotated by the angle of a, the display direction of the display content "100" is as shown in the right display screen in fig. 3, and the display direction is more adapted to the orientation of the face in fig. 2, so that the face can conveniently see the content displayed on the display screen without rotating.
The beneficial effects of the above technical scheme are: can make the display orientation of the blood oxygen information that finally shows more be fit for observing that the people of observing the oximeter is convenient, that is to say, the oximeter can automatically regulated show the orientation for can adjust the display orientation along with the relative position between the face display screen, make the display orientation after adjusting and face orientation adaptation more, human body need not rotate or people need not adjust the orientation of face, just can conveniently see blood oxygen information, facilitate the use.
Or, when the display screen does not have the function of performing display operation according to the rotated display direction in the first mode, "adjusting the display direction of the display screen according to the included angle" may also be implemented in the second mode:
generating a display picture when the blood oxygen information is displayed along the default display direction according to the default display direction;
screenshot is carried out on the display picture, and a screenshot of the display picture is generated;
rotating the screenshot of the display picture towards the direction of the first ray by an included angle;
and displaying the rotated screenshot of the display picture.
In an embodiment, the denoising processing on the acceleration information to obtain denoised acceleration information may be implemented as:
carrying out data integration and filtering denoising on the acceleration information acquired by the acceleration sensor for multiple times by using a formula (1) to obtain denoised acceleration information:
wherein, a0Representing the acceleration value of the oximeter in the wearing direction after denoising; b0Representing the acceleration value of the oximeter in the direction vertical to the wearing direction after denoising; a isiRepresenting the wearing direction acceleration value acquired by the acceleration sensor at the ith time; a isjRepresenting the wearing direction acceleration value (j is less than or equal to i) acquired by the acceleration sensor at the jth time; biRepresenting the acceleration value which is acquired by the acceleration sensor at the ith time and is vertical to the wearing direction; bjRepresenting the acceleration value (j is less than or equal to i) which is acquired by the acceleration sensor at the jth time and is vertical to the wearing direction;
at this time, the determining the posture information of the human body part wearing the oximeter according to the denoised acceleration information may be implemented as:
calculating by using a formula (2) to obtain an inclination angle of the human body part wearing the oximeter, and taking the inclination angle as posture information of the human body part wearing the oximeter:
wherein A represents the tilt angle of the part of the human body wearing the oximeter; g represents the gravitational acceleration.
The beneficial effects of the above technical scheme are: obtaining the denoised acceleration information by using a formula (1) in order to eliminate the fluctuation of the acquired data caused by the slight action of the human body part by using the formula, so that the obtained result is more accurate; and (3) obtaining the inclination angle of the human body part wearing the oximeter by using a formula (2), aiming at obtaining the posture information of the human body part wearing the oximeter according to the de-noised acceleration information, wherein the posture information determined by the method is more accurate.
In one embodiment, when the posture information indicates that the human body part is not placed in a preset manner, the method may further include:
calculating the inclination angle of the human body part wearing the oximeter by using a formula (3):
wherein B represents the inclination angle of the human body part wearing the oximeter;
the oximeter sends out a prompt which is used for informing the inclination angle so as to remind a wearer of adjusting the part of the human body wearing the oximeter and eliminate the inclination angle.
According to the technical scheme, the inclination angle of the human body part wearing the oximeter is calculated, and the purpose is to inform the wearer of the direction needing to be adjusted through the inclination angle when the posture information of the human body part wearing the oximeter does not meet the requirement due to the fact that the wearing of the wearer is not standardized, so that the time cost is saved, and the use efficiency of the oximeter is improved.
As shown in fig. 4, reference numeral 10 denotes a touch screen on the oximeter, reference numeral 20 denotes a human body part wearing the oximeter, point O is a central point of the touch screen 10, and a connection line from O as a starting point to a midpoint X of one side edge of the touch screen, that is, the OX is located in the wearing direction; the direction of OY vertical to OX is vertical wearing direction; hq is the projection of OX on horizontal plane 30; hp is the projection of OY on the horizontal plane; the angle A is the inclined angle of the human body part wearing the oximeter, and A is the angle OCH; the angle B is a tendency angle of a human body part wearing the oximeter, and the angle B is an angle CHq; the angle OCH is the face angle of face Opq and face Hpq, wherein OC ≠ pq, HC ═ pq.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A method for controlling an oximeter based on a human posture recognition technology is characterized in that an acceleration sensor is arranged on the oximeter, and the method comprises the following steps:
acquiring acceleration information sensed by the acceleration sensor;
determining posture information of a human body part wearing the oximeter according to the acceleration information;
and controlling the display work of a display screen of the oximeter according to the posture information.
2. The method of claim 1,
the determining the posture information of the human body part wearing the oximeter according to the acceleration information comprises:
denoising the acceleration information to obtain denoised acceleration information;
and determining the posture information of the human body part wearing the oximeter according to the denoised acceleration information.
3. The method of claim 1 or 2,
the display work of the display screen of the oximeter is controlled according to the posture information, and the display work comprises the following steps:
when the posture information shows that the human body part is placed according to a preset mode, controlling the display screen to start display work so as to display the blood oxygen information currently detected by the oximeter;
the preset mode is that the included angle between the human body part and the horizontal plane is within a preset included angle range; the range of the preset included angle is [0, 30 ].
4. The method of claim 1, wherein a light intensity sensor and a camera are disposed on an outer surface of a housing of the oximeter on which the display screen is disposed;
the display work of the display screen of the oximeter is controlled according to the posture information, and the display work comprises the following steps:
when the posture information shows that the human body part is placed according to a preset mode, acquiring a light intensity signal detected by the light intensity sensor;
when the light intensity signal is equal to or less than the preset light intensity, controlling the display screen to stop displaying;
when the light intensity signal is greater than the preset light intensity, starting the camera to shoot;
acquiring a video shot by the camera, and judging whether the video comprises at least N continuous human face image frames; n is a preset integer, and the numerical value of N can be 10 or more;
and when all the human face image frames comprise at least N continuous human face image frames, controlling the display screen to start display work, and controlling the display direction of the display screen according to a preset display direction control method.
5. The method of claim 4, wherein the preset display orientation control method comprises:
selecting at least one frame from the continuous at least N frames of human face image frames as a target frame;
determining an included angle between a first ray and a second ray according to the target frame; the first ray is a ray which takes the middle point between the two eyes of the face in the target frame as a starting point and passes through the nose tip; the second ray is a ray which takes the middle point of the reference edge of the display screen as a starting point and passes through the middle point of the opposite edge of the reference edge; the pointed direction of the second ray is the default display direction of the display screen.
And adjusting the display direction of the display screen according to the included angle.
6. The method of claim 5, wherein said adjusting the display orientation of the display screen according to the included angle comprises:
rotating the default display direction of the display screen by the included angle to enable the rotated display direction to be consistent with the direction pointed by the first ray;
and performing display work according to the rotated display direction.
7. The method of claim 5, wherein said adjusting the display orientation of the display screen according to the included angle comprises:
generating a display picture when the blood oxygen information is displayed along the default display direction according to the default display direction;
screenshot is carried out on the display picture, and a screenshot of the display picture is generated;
rotating the screenshot of the display screen towards the direction of the first ray by the included angle;
and displaying the rotated screenshot of the display picture.
8. The method as claimed in claim 5, wherein said selecting at least one frame from at least N consecutive frames of the human face image as the target frame comprises:
and taking the last frame in the continuous at least N frames of human face image frames as the target frame.
9. The method of claim 3,
the denoising processing is performed on the acceleration information to obtain denoised acceleration information, and the denoising processing includes:
carrying out data integration and filtering denoising on the acceleration information acquired by the acceleration sensor for multiple times by using a formula (1) to obtain denoised acceleration information:
wherein, a0Representing the acceleration value of the oximeter in the wearing direction after denoising; b0Representing the acceleration value of the oximeter in the direction vertical to the wearing direction after denoising; a isiRepresenting the wearing direction acceleration value acquired by the acceleration sensor at the ith time; a isjRepresenting the wearing direction acceleration value (j is less than or equal to i) acquired by the acceleration sensor at the jth time; biRepresenting the acceleration value which is acquired by the acceleration sensor at the ith time and is vertical to the wearing direction; bjRepresenting the acceleration value (j is less than or equal to i) which is acquired by the acceleration sensor at the jth time and is vertical to the wearing direction;
the determining the posture information of the human body part wearing the oximeter according to the denoised acceleration information comprises the following steps:
calculating by using a formula (2) to obtain an inclination angle of the human body part wearing the oximeter, and taking the inclination angle as posture information of the human body part wearing the oximeter:
wherein A represents the tilt angle of the part of the human body wearing the oximeter; g represents the gravitational acceleration.
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2020
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| CN103961109A (en) * | 2014-05-05 | 2014-08-06 | 北京航空航天大学 | Human body posture detection device based on acceleration signals and angular speed signals |
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| CN108989668A (en) * | 2018-06-29 | 2018-12-11 | 维沃移动通信有限公司 | A kind of working method and mobile terminal of camera |
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