CN117204850A - Device and method for detecting micro consciousness state based on virtual reality - Google Patents
Device and method for detecting micro consciousness state based on virtual reality Download PDFInfo
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Abstract
The invention provides a device and a method for detecting a micro consciousness state based on virtual reality. The device comprises: virtual reality glasses, an eye movement tracking unit installed on the virtual reality glasses, and a console connected with the virtual reality glasses; the virtual reality glasses are used for playing test images for the patient to watch under the action of the control console, the eye movement tracking unit is used for realizing eye movement tracking by acquiring video images of eye movement of the patient when the patient watches the test images in real time, and transmitting the eye movement state data to the control console; the console detects a conscious state of the patient based on the eye movement state data. The invention can enable the user to detect the consciousness state of the slightly conscious patient without going out, solves the problem that the patient has to go to the hospital for detection in the prior art, and is greatly convenient for the user; the invention can also carry out auxiliary treatment on the micro conscious patient by playing the proper image.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to a device and a method for detecting a micro consciousness state based on virtual reality.
Background
With the rapid development of science and technology, various advanced medical devices emerge in the medical industry, however, for patients with only small consciousness of vision and hearing, the medical auxiliary means of the medical devices are still in the current stage of stimulating the vision and hearing of the patients by using the video and audio cabin of the large hospital. However, the auxiliary means requires high-frequency stimulation for years, and in the process, the auxiliary means has various defects, namely traffic problems, and not every patient can be fixed to a hospital for treatment for a long time; secondly, the problem of disease tracking is that doctors cannot evaluate the treatment effect in the mode, and the families of patients are difficult to obtain confidence in treatment; finally, the effect problem is that the video and audio cabin is designed by taking health people as a blue book, so that the patient cannot be guaranteed to pay attention to the video and audio content, and meanwhile, the video content played by the hospital is fixed, and specific content cannot be provided for the patient so as to perform targeted effective stimulation.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a device and a method for detecting a micro consciousness state based on virtual reality.
In order to achieve the above object, the present invention adopts the following technical scheme.
In a first aspect, the present invention provides a device for detecting a micro-consciousness state based on virtual reality, including virtual reality glasses, an eye tracking unit mounted on the virtual reality glasses, and a console connected to the virtual reality glasses; the virtual reality glasses are used for playing test images for the patient to watch under the action of the control console, the eye movement tracking unit is used for realizing eye movement tracking by acquiring video images of eye movement of the patient when the patient watches the test images in real time, and transmitting the eye movement state data to the control console; the console detects a conscious state of the patient based on the eye movement state data.
Further, the eye movement tracking unit includes: the infrared LED light source is sequentially connected with the CCD camera, the image acquisition card, the processor and the first communication module; the infrared LED light source is used for generating near infrared light for supplementing ambient illumination; the CCD camera is an image sensor sensitive to near infrared light and is used for acquiring an eyeball video image of a patient in real time; the image acquisition card is used for converting an analog video signal output by the CCD camera into a digital signal; the processor is used for realizing eye movement tracking by processing the eyeball image; the first communication module is used for realizing data communication with the console.
Further, the control console comprises a central processing unit, a man-machine interaction module, a display, a memory and a second communication module, wherein the man-machine interaction module, the display, the memory and the second communication module are connected with the central processing unit; the man-machine interaction module is mainly used for selecting test images and playing parameters for patients to watch through manual operation; the second communication module is mainly used for realizing data communication with the first communication module; the central processing unit is mainly used for coordinating the work of other modules of the control console, and detecting the consciousness state of the patient based on the eyeball motion state data from the eye tracking unit.
Still further, the console further comprises a third communication module connected with the central processing unit, and the third communication module is used for transmitting eyeball motion state data and/or consciousness state detection results of the patient to the upper computer.
Further, the method for detecting the consciousness state of the patient comprises the following steps:
playing a test image of a single object for linear motion;
acquiring the movement state of the eyeball of the patient, including the position and the speed of each acquisition point;
based on the position and speed of each acquisition point, the consciousness state of the patient is scored according to a set scoring model.
Further, the objects are each at a velocity V 1 、V 2 、…、V n And (3) performing uniform linear motion, wherein n is the number of different speeds.
Further, the initial velocity of the object is V 0 The uniform acceleration linear motion with acceleration a.
In a second aspect, the present invention provides a method for detecting a micro consciousness state by using the device, including the following steps:
selecting a test image for a patient to watch through a console and setting related parameters;
the virtual reality glasses play the test image;
the eye movement tracking unit performs eye movement tracking by acquiring video images of eye movement of a patient when watching a test image in real time and transmits eye movement state data to the console;
the console detects the conscious state of the patient based on the received eye movement state data.
Further, the eye movement tracking unit includes: the infrared LED light source is sequentially connected with the CCD camera, the image acquisition card, the processor and the first communication module; the infrared LED light source is used for generating near infrared light for supplementing ambient illumination; the CCD camera is an image sensor sensitive to near infrared light and is used for acquiring an eyeball video image of a patient in real time; the image acquisition card is used for converting an analog video signal output by the CCD camera into a digital signal; the processor is used for realizing eye movement tracking by processing the eyeball image; the first communication module is used for realizing data communication with the console.
Further, the control console comprises a central processing unit, a man-machine interaction module, a display, a memory and a second communication module, wherein the man-machine interaction module, the display, the memory and the second communication module are connected with the central processing unit; the man-machine interaction module is mainly used for selecting test images and playing parameters for patients to watch through manual operation; the second communication module is mainly used for realizing data communication with the eye tracking unit; the central processing unit is mainly used for coordinating the work of other modules of the control console, and detecting the consciousness state of the patient based on the eyeball motion state data from the eye tracking unit.
Further, the method for detecting the consciousness state of the patient comprises the following steps:
playing a test image of a single object for linear motion;
acquiring the movement state of the eyeball of the patient, including the position and the speed of each acquisition point;
based on the position and speed of each acquisition point, the consciousness state of the patient is scored according to a set scoring model.
Further, the objects are each at a velocity V 1 、V 2 、…、V n And (3) performing uniform linear motion, wherein n is the number of different speeds.
Further, the initial velocity of the object is V 0 Even with acceleration aAccelerating the linear motion.
Compared with the prior art, the invention has the following beneficial effects.
According to the invention, the virtual reality glasses, the eye movement tracking unit arranged on the virtual reality glasses and the control console connected with the virtual reality glasses are arranged, the virtual reality glasses are used for playing test images for a patient to watch under the action of the control console, the eye movement tracking unit is used for realizing eye movement tracking by acquiring video images of eye movements of the patient when the patient watches the test images in real time, and transmitting the eye movement state data to the control console, and the control console detects the consciousness state of the patient based on the eye movement state data, so that the automatic detection of the consciousness state of the patient is realized. The device can enable a user to detect the consciousness state of a slightly conscious patient without going out (in the home of the patient), solves the problem that the patient has to go to a hospital for detection in the prior art, and is greatly convenient for the user; the device can also carry out auxiliary treatment on the micro conscious patient by playing the proper image.
Drawings
Fig. 1 is a block diagram of a device for detecting a micro-consciousness state based on virtual reality according to an embodiment of the present invention.
Fig. 2 is a block diagram of the components of the eye tracking unit.
Fig. 3 is a block diagram of the components of the console.
Fig. 4 is a flowchart of a method for detecting a micro consciousness state by using the device according to an embodiment of the present invention.
In the figure: the device comprises 1-virtual reality glasses, 2-eye movement tracking units, 21-infrared LED light sources, 22-CCD cameras, 23-image acquisition cards, 24-processors, 25-first communication modules, 3-consoles, 31-central processing units, 32-man-machine interaction modules, 33-displays, 34-memories and 35-second communication modules.
Detailed Description
The present invention will be further described with reference to the drawings and the detailed description below, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a block diagram of a micro consciousness state detection device based on virtual reality according to an embodiment of the present invention, which includes virtual reality glasses 1, an eye tracking unit 2 mounted on the virtual reality glasses 1, and a console 3 connected to the virtual reality glasses 1; the virtual reality glasses 1 are used for playing test images for a patient to watch under the action of the control console 3, the eye movement tracking unit 2 is used for realizing eye movement tracking by acquiring video images of eye movement of the patient when the patient watches the test images in real time, and transmitting the eye movement state data to the control console 3; the console 3 detects the conscious state of the patient based on the eyeball movement state data.
In this embodiment, the device mainly consists of virtual reality glasses 1, an eye tracking unit 2 and a console 3, as shown in fig. 1. The functional principle of each component is described separately.
The virtual reality glasses 1 are mainly used for playing test images for patients to watch under the action of the control console 3, and ensuring that the patients can only see pictures displayed by the virtual reality glasses 1. The virtual reality glasses 1, also referred to as VR glasses or VR headset, are typical applications of virtual reality technology (VR). The virtual reality technology simulates a three-dimensional fictional space for a user by adopting a computer technology, actually simulates visual, touch, auditory and other sensory feelings, and can rapidly observe the actual things. In the interactive process of the user, the computer utilizes the strong computing capacity to transmit various information of the three-dimensional virtual world constructed in a simulation mode to the user, so that the user is provided with an immersive experience. Currently, high-performance VR helmets are sold in the market, such as a large-size VR helmet, so that a user can feel very immersed, the adopted CPU model is three-star Exynos7420, and four-core Cortex-A57 and four-core Cortex-A53 of ARM are used, so that the high-performance VR helmets have very strong operation capability and ensure smooth operation.
The eye movement tracking unit 2 is mainly used for realizing eye movement tracking when a patient views a test image so as to obtain movement state data of eyeballs. The eyes of a person are constantly moving even in a sleeping state. Eye movements can be divided into many different types, and typical eye movement patterns mainly include jumping, gazing, and smooth movement. The eye movement tracking unit 2 performs eye movement tracking by acquiring video images at the time of eye movement in real time and performing recognition and positioning of the eyes by processing the video images. For this reason, the eye tracking unit 2 needs to implement four major parts of hardware detection, data extraction, data integration, and gaze tracking. The hardware detection is to acquire the original information of the eyeball movement in an electric signal or image mode. Then, the acquired original information needs to be subjected to data analysis and extraction, and the required eyeball movement data is represented by various methods such as image processing and the like. And finally, sending the data information obtained by the data extraction part to a data synthesis part, and finally realizing the functions of identifying, positioning and the like of eyeballs. The hardware detection and the data extraction are core contents of the whole eye tracking technology, and the data synthesis can be performed according to the obtained related data so as to realize corresponding functions. The hardware structure of the eye-tracking unit 2 is mounted on the virtual reality glasses 1, and a specific hardware structure of the eye-tracking unit 2 will be given in the following embodiment.
The console 3 is mainly used for controlling the virtual reality glasses 1 and detecting the consciousness state of the patient. The console 3 may be located close to the virtual reality glasses 1 and the eye tracking unit 2, and thus may use either wired or wireless communication. The user selects the test image to be played by the virtual reality glasses 1 through the operation console 3, and can also conveniently set and modify the playing parameters. The console 3 detects the consciousness state of the patient based on the eyeball movement state data output from the eye movement tracking unit 2, determines whether the patient has a minute consciousness, and can quantitatively evaluate the consciousness state of the patient. In addition, by playing proper images, the consciousness of the patient can be stimulated, and a certain auxiliary treatment effect is achieved.
The device can enable a user to detect the consciousness state of a patient with micro consciousness, such as a plant person, without going to a hospital, and determine whether the patient has micro consciousness and the degree of micro consciousness; the auxiliary treatment can also be carried out on the micro conscious patient by playing the proper image.
As an alternative embodiment, the eye tracking unit 2 comprises: an infrared LED light source 21, a CCD camera 22, an image acquisition chuck 23, a processor 24 and a first communication module 25 which are sequentially connected; the infrared LED light source 21 is used to generate near infrared light that supplements ambient light; the CCD camera 22 is an image sensor sensitive to near infrared light and is used for acquiring an eyeball video image of a patient in real time; the image acquisition chuck 23 is used for converting the analog video signal output by the CCD camera 22 into a digital signal; the processor 24 is configured to perform eye movement tracking by processing the eye ball images; the first communication module 25 is used for realizing data communication with the console 3.
The present embodiment gives a solution for an eye tracking unit 2. As shown in fig. 2, the eye tracking unit 2 is mainly composed of an infrared LED light source 21, a CCD camera 22, an image acquisition chuck 23, a processor 24, and a first communication module 25. The CCD camera 22 is mainly used for capturing video images of the eyes. The image capturing chuck 23 is used for converting an analog signal output by the CCD camera 22 into a digital signal that can be recognized by the processor 24. The processor 24 is used to implement eye movement tracking based on image processing. Since the surrounding illumination environment is in a dark state when the patient wears the virtual reality glasses 1, the repeated switching of the film source can bring illumination influence when the virtual reality glasses 1 are played, and the embodiment is provided with the infrared LED light source 21, which is used for supplementing the ambient illumination and reducing the influence of the film source illumination, for example, an L5IR850A-30 type infrared LED can be adopted. Considering that an eye movement image with uniform near infrared illumination is to be acquired, 6 small infrared LED light sources 21 may be employed. The CCD camera 22 adopts a CCD sensor which is sensitive to near infrared rays, and can adopt an S900 high-sensitivity microminiature infrared camera with a star shape.
As an alternative embodiment, the console 3 includes a central processing unit 31, and a man-machine interaction module 32, a display 33, a memory 34 and a second communication module 35 connected to the central processing unit 31; the man-machine interaction module 32 is mainly used for selecting test images and playing parameters for the patient to watch through manual operation; the second communication module 35 is mainly used for realizing data communication with the eye tracking unit 2; the central processing unit 31 is mainly used for coordinating the work of other modules of the console 3, and detecting the conscious state of the patient based on the eyeball motion state data from the eye tracking unit 2.
The present embodiment gives a technical solution for the console 3. The console 3 can be an existing PC or can be self-built into a hardware structure. The console 3 mainly comprises a central processing unit 31, a man-machine interaction module 32, a display 33, a memory 34 and a second communication module 35, and the connection relation of the modules is shown in fig. 3. The user can conveniently select the played test image content and parameters through the manual interaction unit (keyboard and/or mouse). The display 33 may be used to display eyeball movement state data, movement trajectories, detection results, and the like. The second communication module 35 may be arranged to enable data communication of the console 3 with the eye tracking unit 2 by cooperating with the first communication module 25 of the eye tracking unit 2.
As an alternative embodiment, the console 3 further comprises a third communication module connected to the central processing unit 31, for transmitting the eye movement state data and/or the consciousness state detection result of the patient to the upper computer.
In this embodiment, in order to upload the relevant data and/or the detection results obtained during the use of the device by the user, for example to a monitoring center of a hospital, a third communication module is provided, which is connected to the central processing unit 31 of the console 3. The monitoring center of the hospital can analyze and compare according to the data uploaded by the user to make more accurate detection results.
As an alternative embodiment, a method for detecting a conscious state of a patient includes:
playing a test image of a single object for linear motion;
acquiring the movement state of the eyeball of the patient, including the position and the speed of each acquisition point;
scoring the consciousness state of the patient according to a set scoring model based on the position and the speed of each acquisition point;
if the score is greater than a set threshold, the patient has little consciousness.
The embodiment provides a technical scheme for detecting the consciousness state of a patient. The present embodiment detects the consciousness state of the patient by playing a test image of the movement of a single object. The method is characterized in that the principle that a single object is played to move is consistent with the principle that a traditional doctor manually moves the object in front of the eyes of a patient, and whether the eyeballs of the patient move along with the movement of the object is judged through the simplest stimulation, so that whether the eyeballs are in a micro consciousness state is judged. Compared with the traditional mode, the method can be repeated for a long time by adopting the virtual reality mode, and the diagnosis error caused by that a patient does not see an object or does not move eyeballs due to sleeping is avoided. And acquiring the movement state data of the eyeballs of the patient in real time during the image playing process, wherein the movement state data comprises position coordinates and speed values of all the acquisition points, and scoring the consciousness state of the patient according to a preset scoring model based on the movement state data. When the score exceeds a set threshold, the patient is considered to have little consciousness; otherwise, there is no minor awareness. The higher the score, the stronger the micro consciousness, so quantitative evaluation of the consciousness state of the patient can be realized according to the score.
As an alternative embodiment, the objects are each at a velocity V 1 、V 2 、…、V n And (3) performing uniform linear motion, wherein n is the number of different speeds.
The present embodiment defines the motion state of a single object. In this embodiment, the object makes the simplest uniform linear motion. In order to improve the scoring precision, n different speeds are adopted to respectively test, and the conscious state of the patient is comprehensively scored based on the eyeball motion states corresponding to the n different speeds to obtain the final score. Generally, the greater the speed, the greater the difficulty that the eyeball of the patient can move synchronously with the object, and a scoring formula can be designed according to the difficulty.
As an alternative embodiment, the object has an initial velocity V 0 Acceleration ofThe linear motion is uniformly accelerated for a.
The present embodiment defines the motion state of a single object. In the embodiment, the object makes uniform acceleration linear motion, and the initial speed is V 0 The acceleration is a. The values of the initial speed and the acceleration can be changed, and generally, the larger the initial speed and the acceleration, the greater the difficulty that the eyeball of the patient can move synchronously along with the object, and a scoring formula can be designed according to the difficulty.
Fig. 4 is a flowchart of a method for detecting a micro-consciousness state by using the device according to an embodiment of the present invention, where the method includes the following steps:
step 101, selecting a test image for a patient to watch through a console 3 and setting related parameters;
step 102, playing the test image by the virtual reality glasses 1;
step 103, the eye movement tracking unit 2 performs eye movement tracking by acquiring video images of eye movement of a patient watching a test image in real time, and transmits the eye movement state data to the console 3;
step 104, the console 3 detects the conscious state of the patient based on the received eyeball movement state data.
Compared with the technical scheme of the embodiment of the apparatus shown in fig. 1, the method of the embodiment has similar implementation principle and technical effect, and is not repeated here. As well as the latter embodiments, will not be explained again.
As an alternative embodiment, the eye tracking unit 2 comprises: an infrared LED light source 21, a CCD camera 22, an image acquisition chuck 23, a processor 24 and a first communication module 25 which are sequentially connected; the infrared LED light source 21 is used to generate near infrared light that supplements ambient light; the CCD camera 22 is an image sensor sensitive to near infrared light and is used for acquiring an eyeball video image of a patient in real time; the image acquisition chuck 23 is used for converting the analog video signal output by the CCD camera 22 into a digital signal; the processor 24 is configured to perform eye movement tracking by processing the eye ball images; the first communication module 25 is used for realizing data communication with the console 3.
As an alternative embodiment, the console 3 includes a central processing unit 31, and a man-machine interaction module 32, a display 33, a memory 34 and a second communication module 35 connected to the central processing unit 31; the man-machine interaction module 32 is mainly used for selecting test images and playing parameters for the patient to watch through manual operation; the second communication module 35 is mainly used for realizing data communication with the eye tracking unit 2; the central processing unit 31 is mainly used for coordinating the work of other modules of the console 3, and detecting the conscious state of the patient based on the eyeball motion state data from the eye tracking unit 2.
As an alternative embodiment, a method for detecting a conscious state of a patient includes:
playing a test image of a single object for linear motion;
acquiring the movement state of the eyeball of the patient, including the position and the speed of each acquisition point;
based on the position and speed of each acquisition point, the consciousness state of the patient is scored according to a set scoring model.
As an alternative embodiment, the objects are each at a velocity V 1 、V 2 、…、V n And (3) performing uniform linear motion, wherein n is the number of different speeds.
As an alternative embodiment, the object has an initial velocity V 0 The uniform acceleration linear motion with acceleration a.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. The micro consciousness state detection device based on the virtual reality is characterized by comprising virtual reality glasses, an eye movement tracking unit arranged on the virtual reality glasses and a console connected with the virtual reality glasses; the virtual reality glasses are used for playing test images for the patient to watch under the action of the control console, the eye movement tracking unit is used for realizing eye movement tracking by acquiring video images of eye movement of the patient when the patient watches the test images in real time, and transmitting the eye movement state data to the control console; the console detects a conscious state of the patient based on the eye movement state data.
2. The virtual reality-based micro-state of consciousness detection apparatus according to claim 1, wherein the eye movement tracking unit includes: the infrared LED light source is sequentially connected with the CCD camera, the image acquisition card, the processor and the first communication module; the infrared LED light source is used for generating near infrared light for supplementing ambient illumination; the CCD camera is an image sensor sensitive to near infrared light and is used for acquiring an eyeball video image of a patient in real time; the image acquisition card is used for converting an analog video signal output by the CCD camera into a digital signal; the processor is used for realizing eye movement tracking by processing the eyeball image; the first communication module is used for realizing data communication with the console.
3. The virtual reality-based micro consciousness state detection apparatus according to claim 1, wherein the console includes a central processing unit and a man-machine interaction module, a display, a memory and a second communication module connected to the central processing unit; the man-machine interaction module is mainly used for selecting test images and playing parameters for patients to watch through manual operation; the second communication module is mainly used for realizing data communication with the first communication module; the central processing unit is mainly used for coordinating the work of other modules of the control console, and detecting the consciousness state of the patient based on the eyeball motion state data from the eye tracking unit.
4. A virtual reality-based micro state of consciousness detection apparatus according to claim 3, wherein the console further includes a third communication module connected to the central processing unit for transmitting the eye movement state data and/or the state of consciousness detection result of the patient to the host computer.
5. The virtual reality-based micro-state of consciousness detection apparatus according to claim 1, wherein the method of detecting the state of consciousness of the patient includes:
playing a test image of a single object for linear motion;
acquiring the movement state of the eyeball of the patient, including the position and the speed of each acquisition point;
based on the position and speed of each acquisition point, the consciousness state of the patient is scored according to a set scoring model.
6. The virtual reality-based micro-state of consciousness detection apparatus according to claim 5, wherein the objects are each at a speed V 1 、V 2 、…、V n And (3) performing uniform linear motion, wherein n is the number of different speeds.
7. The virtual reality-based micro-state of consciousness detection apparatus according to claim 5, wherein the initial velocity of the object is V 0 The uniform acceleration linear motion with acceleration a.
8. A method of micro-consciousness detection using the apparatus of claim 1, comprising the steps of:
selecting a test image for a patient to watch through a console and setting related parameters;
the virtual reality glasses play the test image;
the eye movement tracking unit performs eye movement tracking by acquiring video images of eye movement of a patient when watching a test image in real time and transmits eye movement state data to the console;
the console detects the conscious state of the patient based on the received eye movement state data.
9. The method of claim 8, wherein the eye-tracking unit comprises: the infrared LED light source is sequentially connected with the CCD camera, the image acquisition card, the processor and the first communication module; the infrared LED light source is used for generating near infrared light for supplementing ambient illumination; the CCD camera is an image sensor sensitive to near infrared light and is used for acquiring an eyeball video image of a patient in real time; the image acquisition card is used for converting an analog video signal output by the CCD camera into a digital signal; the processor is used for realizing eye movement tracking by processing the eyeball image; the first communication module is used for realizing data communication with the console.
10. The method of claim 8, wherein the method of detecting the state of consciousness of the patient comprises:
playing a test image of a single object for linear motion;
acquiring the movement state of the eyeball of the patient, including the position and the speed of each acquisition point;
based on the position and speed of each acquisition point, the consciousness state of the patient is scored according to a set scoring model.
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| CN118044777A (en) * | 2024-03-01 | 2024-05-17 | 成都集思鸣智科技有限公司 | Method, apparatus, system, electronic device, computer readable storage medium and computer program product for monitoring consciousness of a subject based on eye movements of the subject |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118044777A (en) * | 2024-03-01 | 2024-05-17 | 成都集思鸣智科技有限公司 | Method, apparatus, system, electronic device, computer readable storage medium and computer program product for monitoring consciousness of a subject based on eye movements of the subject |
| CN118044777B (en) * | 2024-03-01 | 2024-10-22 | 成都集思鸣智科技有限公司 | Method, apparatus, system, electronic device, computer readable storage medium and computer program product for monitoring consciousness of a subject based on eye movements of the subject |
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