CN105455792B - Headband for virtual reality glasses - Google Patents
Headband for virtual reality glasses Download PDFInfo
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- CN105455792B CN105455792B CN201510963433.1A CN201510963433A CN105455792B CN 105455792 B CN105455792 B CN 105455792B CN 201510963433 A CN201510963433 A CN 201510963433A CN 105455792 B CN105455792 B CN 105455792B
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- virtual reality
- eeg signals
- reality glasses
- module
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- 239000011521 glass Substances 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000036760 body temperature Effects 0.000 claims abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000008280 blood Substances 0.000 claims abstract description 5
- 210000004369 blood Anatomy 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims description 7
- 210000004556 brain Anatomy 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 210000001061 forehead Anatomy 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 7
- 210000003128 head Anatomy 0.000 description 4
- 230000035479 physiological effects, processes and functions Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 210000004761 scalp Anatomy 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
Abstract
The present invention provides a kind of headband for virtual reality glasses, including headband structure and headband circuit, the headband structure includes：Circular ring shape protection pad, the long bandage being laterally arranged, the spat being laterally arranged, vertically arranged perpendicular bandage；The headband circuit includes：With EEG signals test electrode, humiture module, vibration module, PPG sensors, pressure sensor, lithium battery, master controller, processing circuit and bluetooth module.The headband of the virtual reality glasses of the present invention is simple in structure, and can realize that pressure these physiological parameters born to EEG signals, body temperature, blood oxygen concentration, pulse and the bridge of the nose are accurately detected.
Description
Technical field
The present invention relates to virtual reality technologies and wearing computing technique, more particularly to a kind of being used for virtual reality eye
The headband of mirror.
Background technology
Virtual reality technology (Virtual Reality, abbreviation VR) can pass through the sense of hearing of analog subscriber, tactile, vision
The impression of equal sense organs, allows user is comprehensive, goes to observe the virtual three dimensional space simulated by computing device without limitation,
As on the spot in person.In recent years, various with virtual reality phase with the fast development with the relevant every technology of virtual reality technology
The product of pass also emerges one after another.
Virtual reality glasses are the wearable products of visual entertainment based on virtual reality, by people to extraneous vision, listen
Feel closing, guiding user generate it is a kind of in virtual environment feel to allow user can in time, observe three-dimensional without limitation
Things in space.
In the prior art, the major programme of use includes following several：
(1) Carboard be Google release a virtual reality glasses, the glasses with close smart mobile phone being capable of group
At a virtual reality device.Cardboard glasses are assembled, the application on smart mobile phone is opened, places on cardboard glasses
Card slot, user can enjoy VR equipment immersion experience；
(2) Oculus DK2 are a virtual reality glasses designed for electronic game.Its image source selects Samsung Note
3 resolution ratio are 5.7 cun of display screens of 1920*1080, are configured with the sensors such as acceleration transducer, gyroscope, magnetometer, built-in
Delay measurements instrument, moreover it is possible to which, by being arranged in the infrared LED on glasses shell come the position of tracker, Oculus is on being configured with
After the hardware stated, weight has reached 453 grams.
The defect that said program is primarily present has the following：
(1) first, Cardboard only processing is amplified to the display of mobile phone, itself and without any sensing
Device.Secondly, Cardboard is fixed to the head of user simply by a velcro, be easy to cause shaking when in use simultaneously
And the comfort level worn is not high.
(2) since the weight of Oculus DK2 is not light and weight is distributed mainly on face, user is easy in use
Cause sense of discomfort.And Oculus DK2 cannot detect physiological parameter, can not grasp psychology and the physiology impression of user.
Therefore, it is difficult as current technology that psychology and physiology impression of the user when using virtual reality glasses how to be grasped
The technical issues of inscribing and needing urgent need to resolve.
Invention content
Present invention generally provides a kind of psychology and physiological signal that can detect user when wearing virtual reality glasses, and
By the analysis to these psychology and physiological signal, psychology and the physiology impression of user are obtained, meanwhile, the present invention is changed by structure
Into, further improve user wear when comfort level.
For this purpose, the present invention provides a kind of headband for virtual reality glasses, which includes headband structure and headband
Circuit, it is characterised in that：The headband structure includes：Circular ring shape protection pad, the long bandage being laterally arranged, short tying up of being laterally arranged
Band, vertically arranged perpendicular bandage；The headband circuit includes：With EEG signals test electrode, humiture module, vibration mould
Block, PPG sensors, pressure sensor, lithium battery, master controller, processing circuit and bluetooth module.
Preferably, the circular ring shape protection pad fits in the inside outer of virtual reality glasses, above-mentioned three bandages
It stretches.
Preferably, distribution of the EEG signals test electrode in the headband is arranged as follows：According to cranium
The ratio of bone determines electrode position so that the placement location of electrode relationship as proportional to the size and shape of head as possible.
Preferably, it tests electrode by EEG signals and obtains original EEG signals data, then pass the signal to place
Reason circuit is amplified, is filtered, then by treated, EEG signals transmit via the bluetooth module being connected with master controller
To virtual reality glasses.
Preferably, the temperature and humidity data of the left front volume of virtual reality glasses user are obtained by humiture module, then
The temperature value of the left front volume of human body is obtained according to reduction formula；
The reduction formula is：Body temperature=32.76+0.104* temperature value+0.0126* rh values.
Preferably, the PPG sensors include each PPG sensor positioned at protection pad the right and left, two PPG sensings
Device can be used in the complementary correction of PPG signals.
Preferably, will differential amplification, bandpass filtering and modulus be carried out by the collected blood oxygen of PPG sensors and pulse data
It is transmitted to master controller after conversion, virtual reality glasses are transferred to via bluetooth module.
Preferably, user's pressure that the bridge of the nose is born when wearing virtual reality glasses is detected by the modular pressure
Force value, and pressure value is sent to the master controller, it is transmitted to virtual reality glasses end via bluetooth.
Preferably, the vibration module is controlled by the master controller, when user wears virtual reality glasses
When time is more than setting value, the vibration module vibrates.
The advantageous effect of above-mentioned technical proposal of the present invention includes：
User detects the brain telecommunications of user by the sensor on headband during wearing virtual reality glasses
Number, the pressure data that bears of body temperature, blood oxygen concentration, pulse, the bridge of the nose, grasp psychology of user when using virtual reality glasses and
Physiology is experienced.The structure of headband is specially designed excessively, to meet requirement of the user to wearing comfort.
Description of the drawings
Fig. 1 is the schematic diagram of headband structure in the present invention；
Fig. 2 is the schematic diagram of circular ring shape protection pad and the sensor placement on protection pad；
Fig. 3 is the schematic diagram of bandage and the module placement on protection pad；
Fig. 4 is the user's distribution map of brain electrical testing electrode on head when wearing virtual reality glasses.
In Fig. 1, label 1.1 is that EEG signals test electrode 1, and label 1.2 is that EEG signals test electrode 2, label 1.3
Electrode 3 is tested for EEG signals, label 1.4 is that EEG signals test electrode 4, and label 1.5 is that EEG signals test electrode 5, mark
Numbers 1.6 test electrode 6 for EEG signals, and label 1.7 is that EEG signals test electrode 7, and label 1.8 is that EEG signals test electrode
8, label 1.9 is that EEG signals test electrode 9, and label 2 is humiture module, and label 3 is vibration module, and label 4.1 passes for PPG
Sensor 1, label 4.2 is PPG sensors 2, and label 5 is pressure sensor, and label 6 is lithium battery, and label 7 is master controller, mark
Numbers 8 be processing circuit, and label 9 is bluetooth module.
In fig. 2, label 1.1 is electrode for encephalograms 1, and label 2 is humiture module, and label 3 is vibration module, label 4.1
For PPG sensors 1, label 4.2 is PPG sensors 2, and label 5 is pressure sensor.
In figure 3, label 1.2 is that EEG signals test electrode 2, and label 1.3 is that EEG signals test electrode 3, label 1.4
Electrode 4 is tested for EEG signals, label 1.5 is that EEG signals test electrode 5, and label 1.6 is that EEG signals test electrode 6, mark
Numbers 1.7 test electrode 7 for EEG signals, and label 1.8 is that EEG signals test electrode 8, and label 1.9 is that EEG signals test electrode
9, label 6 is lithium battery module, and label 7 is master controller, and label 8 is processing circuit, and label 9 is bluetooth module.
In Fig. 4, label 1.1 is that EEG signals test electrode 1, and label 1.2 is that EEG signals test electrode 2, label 1.3
Electrode 3 is tested for EEG signals, label 1.4 is that EEG signals test electrode 4, and label 1.5 is that EEG signals test electrode 5, mark
Numbers 1.6 test electrode 6 for EEG signals, and label 1.7 is that EEG signals test electrode 7, and label 1.8 is that EEG signals test electrode
8, label 1.9 is that EEG signals test electrode 9.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.Those skilled in the art are these it is to be understood that following specific embodiments or specific implementation mode
It invents for the set-up mode for the series of optimum that specific invention content is enumerated is explained further, and between those set-up modes
Can be combined with each other or it is interrelated use, unless the present invention clearly propose some of which or a certain specific reality
Setting can not be associated or be used in conjunction with other embodiments or embodiment by applying example or embodiment.Meanwhile it is following
The set-up mode of specific embodiment or embodiment only as optimization, and not as the reason for limiting protection scope of the present invention
Solution.
Embodiment 1
The headband for virtual reality glasses provided in the present invention, the headband include headband structure and headband circuit,
It is characterized in that：The headband structure includes：Circular ring shape protection pad, the spat being laterally arranged, is vertically set the long bandage being laterally arranged
The perpendicular bandage set；Headband circuit includes：With EEG signals test electrode, humiture module, vibration module, PPG sensors, pressure
Force snesor, lithium battery, master controller, processing circuit and bluetooth module.
As shown in Figure 1, the headband circuit includes as follows：1.1 be EEG signals test electrode 1,1.2 be EEG signals test
Electrode 2,1.3 be EEG signals test electrode 3,1.4 be EEG signals test electrode 4,1.5 be EEG signals test electrode 5,
1.6 be EEG signals test electrode 6,1.7 be EEG signals test electrode 7,1.8 be EEG signals test electrode 8,1.9 be brain
It is humiture module that electric signal, which tests electrode 9,2, and 3 be vibration module, and 4.1 be PPG sensor Isosorbide-5-Nitraes .2 be that PPG sensors 2,5 are
Pressure sensor, 6 be lithium battery, and 7 be master controller, and 8 be processing circuit, and 9 be bluetooth module.
The layout of the EEG signals test electrode 1 is as shown in Figure 2, Figure 3, Figure 4.Wherein Fig. 4 illustrates user and is wearing
For brain electrical testing electrode in the distribution on head, electrode 1.8 and 1.9 and electrode 1.6 and 1.7 are symmetrical when wearing virtual reality glasses.
By EEG signals test electrode obtain original EEG signals data, then pass the signal to processing module be amplified,
It is filtered, then by treated, EEG signals are transmitted to virtual reality glasses via the bluetooth module being connected with main controller.
The humiture module 2 is located on the inside of protection pad, when virtual reality glasses user is during wearing, the sensor
Left forehead position can be affixed on.According to the reduction formula between temperature, relative humidity and body temperature three, the left front volume temperature of human body is obtained
Degree.
The vibration module 3 is located on the inside of protection pad, and when virtual reality glasses user is during wearing, which can paste
In right forehead position.After when the time that user wears virtual reality glasses is more than 2 small, the main controller, which sends out signal, makes institute
The vibration module stated vibrates.
Such as Fig. 2 of the PPG sensors 4, is located on the inside of bandage, and when virtual reality glasses user is during wearing, PPG is passed
Sensor can be affixed on temple position.It is complementary correction why to dispose the effect of two PPG sensors.Pass through PPG sensors, energy
The pulse and blood oxygen of virtual reality glasses user are detected.
The pressure sensor 5 is located on the inside of protection pad, when virtual reality glasses user is during wearing, the module meeting
It is affixed on bridge of the nose position.User's pressure that the bridge of the nose is born when wearing virtual reality glasses can be measured by the pressure sensor.
The lithium battery module 6 is located on the outside of bandage.
The module 7 is master controller, and 8 be processing circuit, and 9 are located at for bluetooth module on the outside of bandage.
Embodiment 2
Microcontroller selects the STM32 processors that ST (ST Microelectronics) is released, model STM32F103RBT6.It should
Model processor is 32 RSIC (reduced instruction set computer), and Cortex-M3ARM cores, 72Mhz working frequencies, high speed is embedded to deposit
Reservoir (flash storage reaches 128Kbytes, and SRAM reaches 20Kbytes), has multiple enhanced I/O and interface to be connected to two
A APB buses.The series provides two 12 analog-digital converters, 3 general 16 bit timing devices and a PWM timer.This is
Row also possess abundant interface：2 I2C and SPI, 3 serial ports, a USB and CAN bus.
The EEG signals test electrode is needle electrode, and the wherein length of micropin can be worn between 20~100 μm
Saturating cuticula also effectively can avoid scalp from being injured to obtain effective EEG signals.The characteristics of according to EEG signals,
The amplifier for selecting high input impedance, high cmrr and low noise is realized using multistage amplification form, in casacade multi-amplifier
Between increase corresponding filter to reduce noise jamming, amplifier will also carry out analog-to-digital conversion to EEG signals.Obtain brain electricity
After signal, virtual reality glasses are sent to by the bluetooth module being connected with main control, for display or other interaction controls
System is used.
The humiture module selects the Temperature Humidity Sensor chip Si7021 of core section science and technology production, the main controller
The ambient temperature value and envionmental humidity value of the left front volume of virtual reality glasses user are read by the humiture module.Temperature,
Reduction formula between relative humidity and body temperature three is：Z=32.76+0.104*X+0.0126*Y, wherein X are environment temperature
It is worth (DEG C), Y is envionmental humidity value (%), and Z is body temperature (DEG C), and the body temperature of left front volume can be acquired by this reduction formula.
After obtaining the body temperature numerical value of forehead, virtual reality glasses are sent to by the bluetooth module being connected with main control, for showing
Or other interactive controllings are used.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of headband for virtual reality glasses comprising headband structure and headband circuit, it is characterised in that：
The headband structure includes：It is circular ring shape protection pad, the long bandage being laterally arranged, the spat being laterally arranged, vertically arranged
Perpendicular bandage；
The headband circuit includes：With EEG signals test electrode, humiture module, vibration module, PPG sensors, pressure
Sensor, lithium battery, master controller, processing circuit and bluetooth module；
The temperature and humidity data that the left front volume of virtual reality glasses user is obtained by humiture module, then according to reduction formula
Obtain the temperature value of the left front volume of human body；The reduction formula is：Body temperature=32.76+0.104* temperature values+0.0126* is relatively wet
Angle value；
After obtaining the body temperature numerical value of forehead, virtual reality glasses are sent to by the bluetooth module being connected with main control, are used for
Display or other interactive controllings are used.
2. headband according to claim 1, it is characterised in that:
The circular ring shape protection pad fits in the inside outer of virtual reality glasses, and three bandages are stretchable.
3. headband according to claim 1, it is characterised in that:
The EEG signals test electrode is dry electrode, material selection conductive rubber or conductive fabric；The EEG signals are surveyed
Electrode is tried each one before and after brain, each two of left and right, there are three electrodes overhead along front and back distribution.
4. headband according to claim 3, it is characterised in that:
Electrode is tested by EEG signals and obtains original EEG signals data, is then passed the signal to processing circuit and is put
Greatly, it is filtered, then by treated, EEG signals are transmitted to virtual reality eye via the bluetooth module being connected with master controller
Mirror.
5. headband according to claim 1, it is characterised in that:
The PPG sensors include each PPG sensor positioned at protection pad the right and left, and two PPG sensors can be used in
The complementary correction of PPG signals.
6. headband according to claim 5, it is characterised in that:
It is transmitted after carrying out differential amplification, bandpass filtering and analog-to-digital conversion by the collected blood oxygen of PPG sensors and pulse data
To master controller, virtual reality glasses are transferred to via bluetooth module.
7. headband according to claim 1, it is characterised in that:
User's pressure value that the bridge of the nose is born when wearing virtual reality glasses is detected by the modular pressure, and will pressure
Force value is sent to the master controller, and virtual reality glasses end is transmitted to via bluetooth.
8. headband according to claim 1, it is characterised in that:
The vibration module is controlled by the master controller, is more than setting when the time that user wears virtual reality glasses
When value, the vibration module vibrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510963433.1A CN105455792B (en) | 2015-12-18 | 2015-12-18 | Headband for virtual reality glasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963433.1A CN105455792B (en) | 2015-12-18 | 2015-12-18 | Headband for virtual reality glasses |
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| CN105455792A CN105455792A (en) | 2016-04-06 |
| CN105455792B true CN105455792B (en) | 2018-09-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105892065B (en) * | 2016-07-08 | 2018-08-17 | 邹泳峰 | A kind of VR glasses |
| CN106226903A (en) * | 2016-08-02 | 2016-12-14 | 彭顺德 | A kind of virtual reality helmet |
| CN106774924A (en) * | 2016-12-30 | 2017-05-31 | 维沃移动通信有限公司 | The data processing method and virtual reality terminal of a kind of virtual reality terminal |
| CN110960204A (en) * | 2018-09-29 | 2020-04-07 | 深圳市掌网科技股份有限公司 | Head-mounted display equipment with human body function detection device |
| CN211834370U (en) | 2019-01-17 | 2020-11-03 | 苹果公司 | Head-mounted display, face interface for head-mounted display and display system |
| CN112870524A (en) * | 2021-01-20 | 2021-06-01 | 灵瞳智能科技(北京)有限公司 | Psychological emergency rescue intervention device based on virtual reality |
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| CN103946732B (en) * | 2011-09-26 | 2019-06-14 | 微软技术许可有限责任公司 | Video based on the sensor input to perspective, near-eye display shows modification |
| CN103149695B (en) * | 2013-02-26 | 2016-02-03 | 歌尔声学股份有限公司 | There are the 3D glasses of health measuring function |
| ES2520540B1 (en) * | 2013-05-10 | 2015-08-28 | Eyedak S.L. | Glasses that allow a mobile phone to be attached and viewed at close range |
| CN204360325U (en) * | 2015-01-15 | 2015-05-27 | 深圳市掌网立体时代视讯技术有限公司 | A kind of wear-type multi-modal interaction system |
| CN204520685U (en) * | 2015-03-11 | 2015-08-05 | 西安电子科技大学 | Wireless sleep monitor system brain wave acquisition cap |
| CN104820500A (en) * | 2015-05-31 | 2015-08-05 | 仲佳 | Virtual reality helmet with electroencephalogram control function |
| CN205433661U (en) * | 2015-12-18 | 2016-08-10 | 济南中景电子科技有限公司 | A bandeau for virtual reality glasses |
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