CN113288087A - Virtual-real linkage experimental system based on physiological signals - Google Patents
Virtual-real linkage experimental system based on physiological signals Download PDFInfo
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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
- A61B5/02—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
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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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
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0062—Arrangements for scanning
- A61B5/0064—Body surface scanning
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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
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
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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
- A61B5/02—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
- A61B5/021—Measuring pressure in heart or blood vessels
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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
- A61B5/02—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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
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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
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
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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
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1072—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring distances on the body, e.g. measuring length, height or thickness
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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
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1075—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer
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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
- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/48—Other medical applications
- A61B5/4866—Evaluating metabolism
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- A—HUMAN NECESSITIES
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- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/04—Electric stethoscopes
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
- A63B2022/0635—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers specially adapted for a particular use
Abstract
The invention discloses a virtual-real linkage experiment system based on physiological signals, which comprises: the physiological parameter acquisition module is used for acquiring and sending physiological parameters of the testee; the model building module is used for generating a virtual physiological human model; and the control module is used for receiving the physiological parameters sent by the physiological parameter acquisition module and inputting the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operation according to the physiological parameters. The invention simulates and displays various detected physiological parameters of the testee through the virtual physiological human model, enhances the participation sense of students through virtual-real linkage, can fully mobilize the interest of experiment exploration of the students, and can help to complete various experiment designs or scientific research tasks.
Description
Technical Field
The invention relates to a virtual-real linkage experiment system based on physiological signals.
Background
The traditional human body physiological experiment system is characterized in that a sensor directly detects physiological signals on the surface of a human body, waveform data are analyzed, corresponding experiment subjects are completed, and the traditional human body physiological experiment system is relatively abstract and is not convenient for students to understand.
Disclosure of Invention
The invention aims to overcome one or more defects in the prior art and provides a virtual-real linkage experiment system based on physiological signals.
The purpose of the invention is realized by the following technical scheme: a kind of fictitious and real linkage experimental system based on physiological signal, including:
the physiological parameter acquisition module is used for acquiring and sending physiological parameters of the testee;
the model building module is used for generating a virtual physiological human model;
and the control module is used for receiving the physiological parameters sent by the physiological parameter acquisition module and inputting the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operation according to the physiological parameters.
Preferably, the physical and virtual linkage experiment system based on physiological signals further comprises:
the interaction module is used for inputting physiological parameters by a user and sending the physiological parameters to the control module;
the control module receives the physiological parameters sent by the interaction module and inputs the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operations according to the physiological parameters.
Preferably, the physiological parameter acquisition module comprises one or more of the following devices:
a respiratory flow sensor for detecting respiratory data of a subject;
a metabolic meter for detecting metabolic data of a subject;
the electrocardio sensor is used for detecting electrocardio data of a subject;
a heart sound transducer for detecting heart sound data of a subject;
a continuous blood pressure meter for detecting real-time blood pressure data of a subject.
Preferably, the physiological parameter acquisition module further comprises:
the spinning is used for collecting the riding speed, pedal angle, resistance, power and heart rate of a subject.
Preferably, the process of generating the virtual physiological human model by the model construction module comprises:
setting a corresponding relation between human body basic data and a virtual physiological human model, wherein the human body basic data comprises sex, age, height and weight;
acquiring human body basic data of the subject;
and generating a corresponding virtual physiological human model according to the human body basic data of the subject.
Preferably, the method for acquiring the age comprises the following steps:
acquiring a frontal face image of a subject;
extracting characteristic values of skin texture, skin color, brightness degree and wrinkle texture in the front face image;
and analyzing the characteristic values of the skin texture, the skin color, the brightness and the wrinkle texture to obtain the age of the subject.
Preferably, the method for acquiring gender comprises the following steps:
acquiring a frontal face image of a subject;
extracting characteristic values of skin texture, skin color, brightness degree and wrinkle texture in the front face image;
and obtaining the gender of the subject by using a secondary mode classifier according to the skin texture, the skin color, the brightness and the characteristic value of the wrinkle texture.
Preferably, the height obtaining method includes:
acquiring an image of a subject;
calculating the initial height according to the position of the subject and the position of the image acquisition equipment;
detecting a hair height of the subject from the subject image;
and subtracting the hair height from the initial height to obtain the final height.
Preferably, generating a corresponding virtual physiological human model according to the human body basic data of the subject comprises:
selecting a corresponding virtual physiological human model according to the age and the sex of the subject;
calculating the body surface area of the subject according to the height and the weight of the subject;
comparing the body surface area of the subject with a default body surface area of a virtual physiological human model to obtain a scaling factor;
correcting the structural parameters of each organ tissue of the virtual physiological human model according to the scaling times, wherein the structural parameters comprise one or more of the lumen resistance, the compliance, the volume, the myocardial contractility and the respiratory muscle contractility of each blood vessel and each trachea structure;
predicting the basal metabolic rate by a Harris and Benedict formula according to the height, the weight, the age and the sex;
and calculating the metabolic quantity of each organ tissue according to the basic metabolic rate and the structural parameters of each organ tissue of the virtual physiological human model.
Preferably, the virtual physiological human model performs corresponding operations according to the physiological parameters, including:
according to the physiological parameters received by the control module, the metabolic quantity and the structural parameters of the virtual physiological human model, the preset physiological indexes are calculated in real time through a mathematical simulation formula of a physiological mechanism;
and controlling an organ animation model and a waveform of the virtual human physiology model and the posture state of the virtual human according to the physiological indexes.
The invention has the beneficial effects that:
(1) the invention carries out simulation display on various detected physiological parameters of the subject through the virtual physiological human model, enhances the participation sense of students through virtual-real linkage, can fully mobilize the interest of experiment exploration of the students, and can help to complete various experiment designs or scientific research tasks;
(2) according to the method, the corresponding virtual physiological human model is generated according to the human body basic data of the testee, so that the matching degree of the virtual physiological human model and the testee is improved, and the simulation accuracy is improved;
(3) the height detection does not need a professional detection tool, and only needs to acquire the image of the subject, so that the method is very convenient and fast;
(4) according to the invention, data such as the age, the sex and the like of the testee can be simultaneously acquired through the image of the testee, manual input is not required, and the automatic acquisition of the human body basic data of the testee is realized.
Drawings
FIG. 1 is a block diagram of a physical signal-based virtual-real linkage experimental system;
FIG. 2 is a flow chart of the model building module generating a virtual physiological person model;
FIG. 3 is a flow chart of generating a corresponding virtual human physiological model from human body basic data.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-3, the present embodiment provides a virtual-real linkage experimental system based on physiological signals:
as shown in fig. 1, a virtual-real linkage experiment system based on physiological signals includes a physiological parameter acquisition module, a model construction module and a control module.
The physiological parameter acquisition module is used for acquiring and transmitting the physiological parameters of the testee. Typically, the physiological parameter includes one or more of respiratory data, metabolic data, electrocardiographic data, heart sound data, blood pressure data, and the like.
Specifically, the physiological parameter acquisition module comprises one or more of a respiratory flow sensor, a metabolic apparatus, an electrocardio sensor, a heart sound transducer and a continuous blood pressure measuring instrument (dynamic blood pressure monitor). The respiratory flow sensor is used for detecting respiratory data of a subject; the metabolism instrument is used for detecting the metabolic data of a subject; the electrocardio sensor is used for detecting electrocardio data of a subject; the heart sound transducer is used for detecting heart sound data of a subject; the continuous blood pressure measuring instrument is used for detecting real-time blood pressure data of a subject.
In some embodiments, the physiological parameter acquisition module further comprises a spinning bike for acquiring the riding speed, pedal angle, resistance, power and heart rate of the subject. Namely, the change of the physiological parameters in the riding process of the subject can be simulated.
The model building module is used for generating a virtual physiological human model. Generally, the virtual physiological human model has a complete cardiovascular system, a respiratory system, an energy metabolism and a nerve regulation mechanism, and can simulate more than 300 physiological indexes at the same time; the adjustment of parameters relates to various processes of physiological mechanisms, including the thickness of blood vessels/trachea, elasticity, contractility of heart, conductivity of nerve fibers and the like, and more than 150 items; the 3D animation in the virtual physiological person is controlled by various indexes deduced by a mathematical model, such as the amplitude and the frequency of heart pulsation, the thickness and the color of artery and vein vessels in each organ, the breathing depth and the rhythm of the lung and the like are simulated in a real-time linkage manner; the virtual physiological human body not only carries out deduction simulation according to the actually measured data, but also synchronizes the state of the virtual human body according to the motion data of the motion bicycle.
The control module is used for receiving the physiological parameters sent by the physiological parameter acquisition module and inputting the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operations according to the physiological parameters.
In some embodiments, the virtual physiological human model performs a corresponding operation according to the physiological parameter, including: according to the physiological parameters received by the control module, the metabolic quantity and the structural parameters of the virtual physiological human model, the preset physiological indexes are calculated in real time through a mathematical simulation formula of a physiological mechanism; and controlling an organ animation model and a waveform of the virtual human physiology model and the posture state of the virtual human according to the physiological indexes, thereby realizing the effect of virtual-real linkage.
In some embodiments, the physical and virtual linkage experiment system based on physiological signals further comprises an interaction module, wherein the interaction module is used for a user to input physiological parameters and send the physiological parameters to the control module; the control module receives the physiological parameters sent by the interaction module and inputs the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operations according to the physiological parameters. Namely, the state of the virtual physiological human model can be controlled according to the physiological parameters acquired by the physiological parameter acquisition module, and can also be controlled according to the physiological parameters input by the user, so that the demonstration requirements under various conditions can be met.
In some embodiments, as shown in fig. 2, the process of the model building module generating the virtual physiological person model comprises:
s1, setting a corresponding relation between human body basic data and a virtual physiological human model, wherein the human body basic data comprises sex, age, height and weight.
And S2, acquiring human body basic data of the testee.
Specifically, the method for acquiring the age comprises the following steps: acquiring a frontal face image of a subject; extracting characteristic values of skin texture, skin color, brightness degree and wrinkle texture in the front face image; and analyzing the characteristic values of the skin texture, the skin color, the brightness and the wrinkle texture to obtain the age of the subject.
The gender obtaining method comprises the following steps: acquiring a frontal face image of a subject; extracting characteristic values of skin texture, skin color, brightness degree and wrinkle texture in the front face image; and obtaining the gender of the subject by using a secondary mode classifier according to the skin texture, the skin color, the brightness and the characteristic value of the wrinkle texture.
The height obtaining method comprises the following steps: acquiring an image of a subject; calculating the initial height according to the position of the subject and the position of the image acquisition equipment; detecting a hair height of the subject from the subject image; and subtracting the hair height from the initial height to obtain the final height. In some embodiments, the height obtaining method further comprises: detecting the posture of the subject, and correcting the detected height according to the posture of the subject.
In the embodiments, the data such as the height of the testee can be obtained through the image of the testee, and professional detection equipment is not needed, so that the method is very convenient and fast; meanwhile, data such as gender and age of the testee can be obtained based on the image of the testee, manual entry is not needed, automatic acquisition of related data information is achieved, and workload of a user is reduced.
And S3, generating a corresponding virtual physiological human model according to the human body basic data of the subject.
According to the embodiments, the corresponding virtual physiological human model is generated according to the human body basic data of the subject, so that the matching degree of the virtual physiological human model and the subject is improved, and the change condition of the related system in the subject can be simulated more accurately.
In some embodiments, as shown in fig. 3, generating a corresponding virtual physiological human model from the human body basic data of the subject includes:
s31, selecting a corresponding virtual physiological human model according to the age and the sex of the subject.
S32, calculating the body surface area of the subject according to the height and the weight of the subject.
And S33, comparing the body surface area of the subject with the default body surface area of the virtual physiological human model to obtain a scaling multiple.
And S34, correcting the structural parameters of each organ tissue of the virtual physiological human model according to the scaling factor, wherein the structural parameters comprise one or more of the lumen resistance, the compliance, the volume, the myocardial contractility and the respiratory muscle contractility of each blood vessel and each trachea structure.
S35, predicting the basal metabolic rate according to the height, the weight, the age and the sex by a Harris and Benedict formula (Harris-Benedict formula).
And S36, calculating the metabolic quantity of each organ tissue according to the basic metabolic rate and the structural parameters of each organ tissue of the virtual physiological human model.
In the embodiments, the corresponding virtual physiological human model is generated according to the human body basic data of the subject, so that the matching degree of the virtual physiological human model and the subject is improved, and the simulation accuracy is improved.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A kind of virtual-real linkage experimental system based on physiological signal, characterized by that, including:
the physiological parameter acquisition module is used for acquiring and sending physiological parameters of the testee;
the model building module is used for generating a virtual physiological human model;
and the control module is used for receiving the physiological parameters sent by the physiological parameter acquisition module and inputting the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operation according to the physiological parameters.
2. The system of claim 1, wherein the physiological signal-based virtual-real linkage experiment system further comprises:
the interaction module is used for inputting physiological parameters by a user and sending the physiological parameters to the control module;
the control module receives the physiological parameters sent by the interaction module and inputs the physiological parameters into the virtual physiological human model, and the virtual physiological human model executes corresponding operations according to the physiological parameters.
3. The system of claim 1, wherein the physiological parameter acquisition module comprises one or more of the following components:
a respiratory flow sensor for detecting respiratory data of a subject;
a metabolic meter for detecting metabolic data of a subject;
the electrocardio sensor is used for detecting electrocardio data of a subject;
a heart sound transducer for detecting heart sound data of a subject;
a continuous blood pressure meter for detecting real-time blood pressure data of a subject.
4. The system of claim 3, wherein the physiological parameter collecting module further comprises:
the spinning is used for collecting the riding speed, pedal angle, resistance, power and heart rate of a subject.
5. The system of claim 1, wherein the process of generating the virtual human physiological model by the model construction module comprises:
setting a corresponding relation between human body basic data and a virtual physiological human model, wherein the human body basic data comprises sex, age, height and weight;
acquiring human body basic data of the subject;
and generating a corresponding virtual physiological human model according to the human body basic data of the subject.
6. The system of claim 5, wherein the age obtaining method comprises:
acquiring a frontal face image of a subject;
extracting characteristic values of skin texture, skin color, brightness degree and wrinkle texture in the front face image;
and analyzing the characteristic values of the skin texture, the skin color, the brightness and the wrinkle texture to obtain the age of the subject.
7. The system of claim 5, wherein the method for acquiring gender comprises:
acquiring a frontal face image of a subject;
extracting characteristic values of skin texture, skin color, brightness degree and wrinkle texture in the front face image;
and obtaining the gender of the subject by using a secondary mode classifier according to the skin texture, the skin color, the brightness and the characteristic value of the wrinkle texture.
8. The system of claim 5, wherein the height obtaining method comprises:
acquiring an image of a subject;
calculating the initial height according to the position of the subject and the position of the image acquisition equipment;
detecting a hair height of the subject from the subject image;
and subtracting the hair height from the initial height to obtain the final height.
9. The system of claim 5, wherein the generating of the virtual human physiological model according to the basic human body data of the subject comprises:
selecting a corresponding virtual physiological human model according to the age and the sex of the subject;
calculating the body surface area of the subject according to the height and the weight of the subject;
comparing the body surface area of the subject with a default body surface area of a virtual physiological human model to obtain a scaling factor;
correcting the structural parameters of each organ tissue of the virtual physiological human model according to the scaling times, wherein the structural parameters comprise one or more of the lumen resistance, the compliance, the volume, the myocardial contractility and the respiratory muscle contractility of each blood vessel and each trachea structure;
predicting the basal metabolic rate by a Harris and Benedict formula according to the height, the weight, the age and the sex;
and calculating the metabolic quantity of each organ tissue according to the basic metabolic rate and the structural parameters of each organ tissue of the virtual physiological human model.
10. The system of claim 1, wherein the virtual human physiological model performs corresponding operations according to the physiological parameters, including:
according to the physiological parameters received by the control module, the metabolic quantity and the structural parameters of the virtual physiological human model, the preset physiological indexes are calculated in real time through a mathematical simulation formula of a physiological mechanism;
and controlling an organ animation model and a waveform of the virtual human physiology model and the posture state of the virtual human according to the physiological indexes.
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