CN105487676A - Virtual-reality device with head-bio-electricity-signal-based human-computer interaction function - Google Patents
Virtual-reality device with head-bio-electricity-signal-based human-computer interaction function Download PDFInfo
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- CN105487676A CN105487676A CN201610026841.9A CN201610026841A CN105487676A CN 105487676 A CN105487676 A CN 105487676A CN 201610026841 A CN201610026841 A CN 201610026841A CN 105487676 A CN105487676 A CN 105487676A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
- G06F3/015—Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/01—Indexing scheme relating to G06F3/01
- G06F2203/011—Emotion or mood input determined on the basis of sensed human body parameters such as pulse, heart rate or beat, temperature of skin, facial expressions, iris, voice pitch, brain activity patterns
Abstract
The invention relates to an intelligent wearing device, in particular to a virtual-reality device with the head-bio-electricity-signal-based human-computer interaction function. According to the virtual-reality device, as a bio-electricity signal collecting module is additionally arranged in a traditional virtual-reality device, electroencephalogram (EEG), electro-oculogram (EOG) and electromyogram (EMG) of a user are collected through the bio-electricity signal collecting module at the same time, and the human-computer interaction function in multiple modes including electroencephalogram interaction, electro-oculogram interaction, electromyogram interaction and combinations thereof can be achieved on the virtual-reality device by analyzing and calculating the three characteristic signals.
Description
Technical field
The present invention relates to a kind of Intelligent worn device, particularly a kind of user's head bioelectrical signals and utilize head bioelectrical signals to carry out virtual reality (VR) equipment of man-machine interaction of can detecting.
Background technology
Virtual reality (VR) head shows equipment, refers to a kind ofly the vision to external world of people, the sense of hearing to be closed by head-mounted display apparatus, and the head guiding user to produce a kind of sensation in virtual environment shows equipment.
Nearly 2 years, virtual reality gradually understand by masses, market has also emerged many virtual reality products, popular familiar has comprised OculusRift, ProjectMorpheus, HTCVive etc.The man-machine interaction mode of existing product has body sense mutual, gesture interaction, interactive voice and external interactive device mutual etc., still do not have a virtual reality (VR) head to show equipment at present and there is human-computer interaction function based on the multiple bioelectrical signals of head.
Summary of the invention
Task of the present invention is to provide a kind of virtual reality (VR) equipment with human-computer interaction function based on head bioelectrical signals, comprise the host circuit of virtual reality device, it is characterized by, also comprise electrode for sampling biological electric signal, processing of bioelectric signals module.
Described electrode for sampling biological electric signal connects described processing of bioelectric signals module, the host circuit of described processing of bioelectric signals module and described virtual reality device is electrically connected, described processing of bioelectric signals module receives and processes the bioelectrical signals that described electrode for sampling biological electric signal collects, and the host circuit of described virtual reality device receives the signal after described electrode for sampling biological electric signal process and in the human-computer interactive control for described virtual reality device.
Preferably, described electrode for sampling biological electric signal, divides according to purposes and has three kinds, comprise exploring electrode, reference electrode and ground electrode.Described exploring electrode, reference electrode and ground electrode can have one or more respectively.
Preferably, described processing of bioelectric signals module, comprises analog signal processing module, analog-to-digital conversion module and digital signal processing module.Described analog signal processing module carries out the process such as differential amplification, filtering to the signal that electrode for sampling biological electric signal collects, and described analog-to-digital conversion module passes to digital signal processing module process by after the analog signals digitizing after analog signal processing resume module.
Wherein, described digital signal processing module can be the partial function function run in microprocessor, also can be independently digital signal processing module.Described digital signal processing module goes the process such as baseline wander, notch filter to the signal after digitizing, and the data after process is transferred to the host circuit of virtual reality device, in the human-computer interactive control for described virtual reality device.
Wherein, described exploring electrode, reference electrode connect the differential input end of described analog signal processing module by shielding line; Described ground electrode connects the cancellation circuit signal output part of described analog signal processing module by shielding line.
Preferably, described electrode for sampling biological electric signal has three, comprises an exploring electrode, a reference electrode and a ground electrode; Described exploring electrode is positioned at the forehead of user, with the forehead skin close contact of user, as a differential input end of the differential amplifier circuit in described analog signal processing module, for detecting bioelectrical signals; Described reference electrode is positioned at user's forehead from the region away from exploring electrode or mastoid process place after being positioned at user's ear-lobe or being positioned at user's ear, as another differential input end of differential amplifier circuit in described analog signal processing module, provides reference potential.Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode and described reference electrode.
Preferably, described ground electrode is positioned at user's forehead from the region away from exploring electrode or mastoid process place after being positioned at user's ear-lobe or being positioned at user's ear, is connected, effectively can suppresses Hz noise with the cancellation circuit signal output part of described analog signal processing module.
Preferably, described electrode for sampling biological electric signal has four, comprises exploring electrode, reference electrode 1, reference electrode 2 and ground electrode; Described exploring electrode is at the forehead of user, described reference electrode 1 is in the horizontal direction of described exploring electrode, described reference electrode 2 is at the vertical direction of described exploring electrode, and described ground electrode is after user's face or the ear user near mastoid process or be clipped on the ear-lobe of user by ear clip; Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode and described reference electrode 1, directly obtains the bioelectrical signals that to be difficult between described exploring electrode and described reference electrode 1 record as a supplement from described exploring electrode and described reference electrode 2.
Preferably, described electrode for sampling biological electric signal has five, comprises exploring electrode 1, exploring electrode 2, reference electrode 1, reference electrode 2 and ground electrode; Described exploring electrode 1 and exploring electrode 2 are respectively in forehead or Nie side of user, and described reference electrode 1, reference electrode 2 and ground electrode are respectively after user's face or the ear user near mastoid process or be clipped on the ear-lobe of user by ear clip; Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode 1 and described reference electrode 1, from recording the bioelectrical signals that not easily records between exploring electrode 1 and reference electrode 1 between described exploring electrode 2 and described reference electrode 2 as a supplement.
Preferably, described electrode for sampling biological electric signal has many covers, often overlaps electrode for sampling biological electric signal and comprises exploring electrode, reference electrode and ground electrode respectively; Be not connected between described each cover electrode for sampling biological electric signal, often overlap electrode for sampling biological electric signal and connect a set of analog signal processing module respectively independently of one another, gather bioelectrical signals independently of one another respectively.
Preferably, described electrode for sampling biological electric signal has many covers, often overlaps electrode for sampling biological electric signal and comprises exploring electrode, reference electrode and ground electrode respectively; Common land electrode between described each cover electrode for sampling biological electric signal, often overlaps electrode for sampling biological electric signal and connects a set of analog signal processing module respectively independently of one another, gather bioelectrical signals independently of one another respectively.
Wherein, described analog signal processing module, comprises amplifying circuit and filtering circuit, and described amplifying circuit connects exploring electrode, reference electrode simultaneously, by the electric potential difference described in differential amplification between exploring electrode and reference electrode, the simulating signal containing bioelectrical signals can be obtained; Again by after described filtering circuit filtering process, obtain cleaner analog quantity bioelectrical signals.
Wherein, described analog-to-digital conversion module can be microprocessor internal sheet in functional module, also can be independently analog to digital converter.By using described analog-to-digital conversion module, to the sample frequency of several thousand times, described analog quantity bioelectrical signals being sampled with hundreds of p.s., analog quantity bioelectrical signals is converted to digital quantity bioelectrical signals.
Wherein, described digital signal processing module comprises: digital signal pretreatment module, feature signal extraction module and characteristic signal processing module.
Wherein, described digital signal pretreatment module goes the process such as baseline drift, notch filter to the bioelectrical signals after digitizing, obtains cleaner digital signal; Described feature signal extraction module, extracts brain electricity composition, myoelectricity composition and eye electricity composition, obtains EEG signals, electromyographic signal and electro-ocular signal from clean digital signal; Described characteristic signal processing module processes described EEG signals, electromyographic signal and electro-ocular signal respectively.
Described EEG signals, electromyographic signal and electro-ocular signal can be transferred to host circuit in virtual reality main body for the man-machine interaction between user and virtual reality device after the process of characteristic signal processing module.
The present invention discloses a kind of method realizing human-computer interaction function based on head bioelectrical signals in virtual reality device, the feature of described method is, employs the above-mentioned electrical structure with the virtual reality device of human-computer interaction function based on head bioelectrical signals.
The invention has the beneficial effects as follows, by increasing electrode for sampling biological electric signal and processing of bioelectric signals module on virtual reality device, when user wears virtual reality device of the present invention, the EEG signals of user, electro-ocular signal and electromyographic signal can be gathered and for man-machine interaction simultaneously, add the man-machine interaction mode of virtual reality device, achieve the diversification of the man-machine interaction mode of virtual reality device.
Accompanying drawing explanation
Fig. 1: the basic block diagram with the virtual reality device of the human-computer interaction function based on bioelectrical signals.
Fig. 2: the basic block diagram of embodiment one.
Fig. 3: the electrode arrangement mode 1 of embodiment one.
Fig. 4: the electrode arrangement mode 2 of embodiment one.
Fig. 5: the basic block diagram of embodiment two.
Fig. 6: the electrode arrangement mode 1 of embodiment two.
Fig. 7: the electrode arrangement mode 2 of embodiment two.
Fig. 8: the electrode arrangement mode 3 of embodiment two.
Fig. 9: the basic block diagram of embodiment three.
Figure 10: the electrode arrangement mode 1 of embodiment three.
Figure 11: the electrode arrangement mode 2 of embodiment three.
Figure 12: the electrode arrangement mode 3 of embodiment three.
Figure 13: the electrode arrangement mode 4 of embodiment three.
Figure 14: the basic block diagram of embodiment four.
Figure 15: the electrode arrangement mode 1 of embodiment four.
Figure 16: the electrode arrangement mode 2 of embodiment four.
Figure 17: the electrode arrangement mode 3 of embodiment four.
Figure 18: the basic block diagram of embodiment five.
Figure 19: the electrode arrangement mode 1 of embodiment five.
Figure 20: the electrode arrangement mode 2 of embodiment five.
Embodiment
In order to enable those skilled in the art clearly understand content of the present invention, below in conjunction with drawings and Examples, the present invention is described further.In following embodiment, numbering consistent feature is identical or corresponding technical characteristic.
Embodiment one:
Figure 2 shows that the basic block diagram of the present embodiment, as shown in FIG., the virtual reality device with the human-computer interaction function based on bioelectrical signals described in the present embodiment, comprise exploring electrode, reference electrode, ground electrode, analog signal processing module, Analog-digital Converter module, digital signal processing module and virtual reality host circuit.
Fig. 3 and the electrode arrangement mode schematic diagram that Figure 4 shows that the present embodiment, in figure, 001 is the main body of virtual reality device, and 002 is the headband of virtual reality device, 003 is the sponge of virtual reality device, 101 is exploring electrode, and 102 is reference electrode, and 103 is ground electrode.
In the present embodiment, the host circuit of virtual reality device is had in the main body 001 of described virtual reality device, described exploring electrode 101, reference electrode 102 and ground electrode 103, be connected to differential input end and the earth terminal of described analog signal processing module by shielding line.Signal after described analog signal processing resume module is passed to digital signal processing module and is processed after Analog-digital Converter resume module, and the host circuit of described virtual reality device receives the signal after described digital signal processing module process and in the human-computer interactive control for described virtual reality device.
In the present embodiment, described exploring electrode 101 is positioned at the forehead of user, with the forehead skin close contact of user, as a differential input end of the discharge circuit in described analog signal processing module, for detecting bioelectrical signals.
When the present embodiment electrode arrangement mode is as Fig. 3, described reference electrode 102 is positioned at exploring electrode 101 horizontal direction and the region of principle exploring electrode 101, as another differential input end of operational amplification circuit in described analog signal processing module, provide reference potential.Relative detection electrode 101 horizontal direction is arranged reference electrode 102 contributes to effective detection level eye and moves signal.
When the present embodiment electrode arrangement mode is as Fig. 4, described reference electrode 102 is positioned at immediately below exploring electrode 101, as another differential input end of operational amplification circuit in described analog signal processing module, provides reference potential.Relative detection electrode 101 vertical direction is arranged reference electrode 102 contributes to effectively detecting vertical eye and moves signal.
In the present embodiment, described ground electrode 103 is positioned at user's forehead from the region away from exploring electrode 101, effectively can suppress Hz noise.
In the present embodiment, described analog signal processing module, comprise amplifying circuit and filtering circuit, described amplifying circuit connects exploring electrode 101, reference electrode 102 simultaneously, by the electric potential difference between exploring electrode described in differential amplification 101 and reference electrode 102, and effectively suppress Hz noise by ground electrode 103, the simulating signal containing bioelectrical signals can be obtained; Again by after described filtering circuit filtering process, obtain cleaner analog quantity bioelectrical signals.
In the present embodiment, described Analog-digital Converter module can be microprocessor internal sheet in functional module, also can be independently analog to digital converter.By using described analog-to-digital conversion module, to the sample frequency of several thousand times, described analog quantity bioelectrical signals being changed with hundreds of p.s., analog quantity bioelectrical signals is converted to digital quantity bioelectrical signals.
In the present embodiment, described digital signal pretreatment module goes the process such as baseline drift, notch filter to the bioelectrical signals after digitizing, obtains cleaner digital signal; Described feature signal extraction module, extracts brain electricity composition, myoelectricity composition and eye electricity composition, obtains EEG signals, electromyographic signal and electro-ocular signal respectively from clean digital signal; Namely described characteristic signal processing module can be used for the man-machine interaction between user and virtual reality device after processing described EEG signals, electromyographic signal and electro-ocular signal respectively.
Embodiment two:
Figure 5 shows that the basic block diagram of embodiment two, as shown in FIG., the virtual reality device with the human-computer interaction function based on bioelectrical signals described in the present embodiment, comprise exploring electrode, reference electrode 1, reference electrode 2, ground electrode, analog signal processing module, Analog-digital Converter module, digital signal processing module and virtual reality host circuit.
Fig. 6, Fig. 7 and Fig. 8 are the distribution of electrodes mode example of embodiment two, and wherein 107 is reference electrode 1, and 106 is reference electrode 2.
In the present embodiment, the host circuit of virtual reality device is had in the main body 001 of described virtual reality device, described exploring electrode 101 and reference electrode 1 are connected the differential input end of an amplifying circuit in described analog signal processing module by shielding line, described exploring electrode 101 goes back simultaneously and reference electrode 2 is connected to the differential input end of another amplifying circuit in described analog signal processing module by shielding line; Ground electrode connects the cancellation circuit in described analog signal processing module.Signal after described analog signal processing resume module is passed to digital signal processing module and is processed after Analog-digital Converter resume module, and the host circuit of described virtual reality device receives the signal after described digital signal processing module process and in the human-computer interactive control for described virtual reality device.
In the present embodiment, obtained the bioelectrical signals comprising brain electricity, eye electricity and electromyographic signal by the electric potential difference of amplifying between exploring electrode 101 and reference electrode 1, obtained the signal being difficult between described exploring electrode 101 and reference electrode 1 detect by the electric potential difference of amplifying between exploring electrode 101 and reference electrode 2.As the situation in Fig. 6 and Fig. 7, effectively can detect EEG signals, electromyographic signal, nictation and level eye and move signal etc. between exploring electrode 101 and reference electrode 1, but be difficult to detect effective vertical eye and move signal, this time, by amplifying the electric potential difference between exploring electrode 101 and reference electrode 2, can be detected effective vertical eye and move signal.In the situation of Fig. 8, although detect between exploring electrode 101 and reference electrode 1 level eye dynamic while, the vertical eye that can also detect some strength moves signal, but level eye is dynamic to be moved and bad differentiation with vertical eye, this time is by amplifying the electric potential difference between exploring electrode 101 and the reference electrode 2 arranged in its vertical direction, effective vertical eye can be obtained and move signal, thus level eye be moved signal and move signal with vertical eye and effectively distinguish.
In the present embodiment, analog signal processing module, Analog-digital Converter module, annexation between digital signal processing module and virtual reality host circuit are consistent with signal relation, difference is, the relative embodiment one of the present embodiment, can distinguish simultaneously and extract vertical eye and move signal and level eye moves signal.
Embodiment three:
Figure 9 shows that the basic block diagram of embodiment three, as shown in FIG., the virtual reality device with the human-computer interaction function based on bioelectrical signals described in the present embodiment, comprise exploring electrode 1, exploring electrode 2, reference electrode 1, reference electrode 2, ground electrode, analog signal processing module, Analog-digital Converter module, digital signal processing module and virtual reality host circuit.
Figure 10, Figure 11, Figure 12 and Figure 13 are the distribution of electrodes scheme example of embodiment three, and wherein 108 is exploring electrode 1, and 109 is exploring electrode 2.
In the present embodiment, the host circuit of virtual reality device is had in the main body 001 of described virtual reality device, described exploring electrode 1 and reference electrode 1 are connected the differential input end of an amplifying circuit in described analog signal processing module by shielding line, described exploring electrode 2 and reference electrode 2 are connected to the differential input end of another amplifying circuit in described analog signal processing module by shielding line; Ground electrode connects the cancellation circuit in described analog signal processing module.Signal after described analog signal processing resume module is passed to digital signal processing module and is processed after Analog-digital Converter resume module, and the host circuit of described virtual reality device receives the signal after described digital signal processing module process and in the human-computer interactive control for described virtual reality device.
In the present embodiment, exploring electrode 1, exploring electrode 2, between reference electrode 1 and reference electrode 2, multiple annexation can be had.As the situation in Figure 10 and Figure 11, exploring electrode 1 is connected an amplifier with reference electrode 1, an amplifier is connected between exploring electrode 2 and reference electrode 2, EEG signals can be recorded in these two groups of amplifiers simultaneously, electromyographic signal moves signal with vertical eye nictation, by being connected amplifying circuit by between exploring electrode 1 with exploring electrode 2, level eye can be recorded and move signal, Brain electric signal can be masked simultaneously when extraction level eye moves signal between exploring electrode 1 and exploring electrode 2.In the situation of Figure 12, can extract vertical eye and move signal and signal of blinking, extract EEG signals, electromyographic signal between exploring electrode 2 and reference electrode 2 between exploring electrode 1 with reference electrode 1, level eye is dynamic waits signal.In the situation of Figure 13, EEG signals can be extracted between exploring electrode 1 and reference electrode 1, vertical eye moves signal, signal of blinking etc., between exploring electrode 2 and reference electrode 2, extract level eye move signal, facial electromyographic signal etc., meanwhile, EEG signals etc. can also be extracted between exploring electrode 1 and reference electrode 2.The various arrangements of electrode contribute to extracting specific bioelectrical signals respectively, therefore can extract required bioelectrical signals by the position of changing electrode as required.
In the present embodiment, analog signal processing module, Analog-digital Converter module, annexation between digital signal processing module and virtual reality host circuit are consistent with signal relation with embodiment one, difference is, the relative embodiment one of the present embodiment, by arranging two exploring electrodes and two reference electrodes respectively, can distinguish simultaneously and extracting vertical eye and move signal and level eye moves signal; Compare embodiment two, more set-up modes of electrode position more flexibly can be had, more excellent characteristic signal can be obtained.
Embodiment four:
Figure 14 shows that the basic block diagram of embodiment four, as shown in FIG., the virtual reality device with the human-computer interaction function based on bioelectrical signals described in the present embodiment, comprise exploring electrode 1, exploring electrode 2, reference electrode 1, reference electrode 2, ground electrode 1, ground electrode 2, analog signal processing module, Analog-digital Converter module, digital signal processing module and virtual reality host circuit.
Figure 15, Figure 16 and Figure 17 are the distribution of electrodes scheme example of embodiment four, and wherein 110 is ground electrode 1, and 111 is ground electrode 2.
In the present embodiment, the host circuit of virtual reality device is had in the main body 001 of described virtual reality device, described exploring electrode 1 and reference electrode 1 are connected the differential input end of an amplifying circuit in described analog signal processing module by shielding line, described exploring electrode 2 and reference electrode 2 are connected to the differential input end of another amplifying circuit in described analog signal processing module by shielding line; Not short circuit between ground electrode 1 and ground electrode 2, connects a cancellation circuit respectively, compared to embodiment one, is equivalent to have two and overlaps bioelectrical signals detection circuit independently described in embodiment one.
In the present embodiment, have two and overlap independently bioelectrical signals detection circuit, can by arranging the signal of two cover bioelectrical signals detection circuit detecting user left and right sides full symmetrics, two groups of signals confirm mutually, make signal more stable, also two cover biotinylated biomolecule electric signal can be arranged on different positions, for detecting diverse signal.
In the situation of Figure 15 and Figure 16, between described exploring electrode 1, reference electrode 1, ground electrode 1 and described exploring electrode 2, reference electrode 2, ground electrode 2, full symmetric is arranged, the signal of two groups of bioelectrical signals detection circuit detection full symmetrics, can by calculating more stable control effects.In the situation of Figure 17, EEG signals can be extracted between exploring electrode 1 and reference electrode 1, level eye moves signal, nictation and electromyographic signal; EEG signals can be extracted between exploring electrode 2 with reference electrode 2, vertical eye moves signal, signal of blinking and electromyographic signal; The signal extracted from two cover bioelectrical signals detection circuits respectively can supplement and confirmation mutually mutually.
Embodiment five:
Figure 18 shows that the basic block diagram of embodiment five, as shown in FIG., the virtual reality device with the human-computer interaction function based on bioelectrical signals described in the present embodiment, comprise the exploring electrode right side 1, the exploring electrode right side 2, an exploring electrode left side 1, an exploring electrode left side 2, reference electrode is left, reference electrode is right, ground electrode is left, ground electrode is right, analog signal processing module, Analog-digital Converter module, digital signal processing module and virtual reality host circuit.
Figure 19 and Figure 20 is two kinds of distribution of electrodes scheme examples of embodiment five, and wherein 112 be the exploring electrode right side 1,113 is the exploring electrode right side 2,114 be an exploring electrode left side 1,115 is an exploring electrode left side 2,116 is that reference electrode is right, 117 is that reference electrode is left, and 118 is that ground electrode is right, and 119 is that ground electrode is left.
In the present embodiment, for left and right half brain and the right and left eyes of user, there is two respective exploring electrodes and respective reference electrode and ground electrode respectively, as required, there is more abundant configuration of electrodes.The present embodiment, when can measure EEG signals at the same time, records that left eye eye moves signal, left facial part electromyographic signal, right eye eye move signal and right face electromyographic signal respectively simultaneously, thus can extract more abundant bioelectrical signals for controlling.
Above-described embodiment is only the certain preferred embodiments with the virtual reality device of human-computer interaction function based on bioelectrical signals of the present invention; not technical scheme of the present invention is exhaustive; any those skilled in the art; can when not paying creative work; other embodiment is obtained in scope disclosed by the invention; therefore, above-described embodiment does not form restriction to protection scope of the present invention, and real protection scope of the present invention should be as the criterion with claims.
Claims (10)
1. there is a virtual reality device for the human-computer interaction function based on head bioelectrical signals, comprise the host circuit of virtual reality device, it is characterized in that, also comprise electrode for sampling biological electric signal and processing of bioelectric signals module;
Described electrode for sampling biological electric signal is connected with described processing of bioelectric signals modular electrical, and the host circuit of described processing of bioelectric signals module and described virtual reality device is electrically connected;
Described processing of bioelectric signals module receives and processes the bioelectrical signals that described electrode for sampling biological electric signal collects, and the host circuit of described virtual reality device receives the signal after described processing of bioelectric signals resume module and in the human-computer interactive control for described virtual reality device.
2. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 1, it is characterized by, described electrode for sampling biological electric signal comprises exploring electrode, reference electrode and ground electrode;
Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode and reference electrode.
3. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 2, it is characterized by, described electrode for sampling biological electric signal has three, comprises an exploring electrode, a reference electrode and a ground electrode;
Described exploring electrode is at the forehead of user, and described reference electrode and ground electrode are respectively after user's face or the ear user near mastoid process or be clipped on the ear-lobe of user by ear clip;
Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode and described reference electrode.
4. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 2, it is characterized by, described electrode for sampling biological electric signal has four, comprises exploring electrode, reference electrode 1, reference electrode 2 and ground electrode;
Described exploring electrode is at the forehead of user, described reference electrode 1 is in the horizontal direction of described exploring electrode, described reference electrode 2 is at the vertical direction of described exploring electrode, and described ground electrode is after user's face or the ear user near mastoid process or be clipped on the ear-lobe of user by ear clip;
Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode and described reference electrode 1, directly obtains the bioelectrical signals that to be difficult between described exploring electrode and described reference electrode 1 record as a supplement from described exploring electrode and described reference electrode 2.
5. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 2, it is characterized by, described electrode for sampling biological electric signal has five, comprises exploring electrode 1, exploring electrode 2, reference electrode 1, reference electrode 2 and ground electrode;
Described exploring electrode 1 and exploring electrode 2 are respectively in forehead or Nie side of user, and described reference electrode 1, reference electrode 2 and ground electrode are respectively after user's face or the ear user near mastoid process or be clipped on the ear-lobe of user by ear clip;
Described processing of bioelectric signals module records required bioelectrical signals between described exploring electrode 1 and described reference electrode 1, from recording the bioelectrical signals that not easily records between exploring electrode 1 and reference electrode 1 between described exploring electrode 2 and described reference electrode 2 as a supplement.
6. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 2, it is characterized by, described electrode for sampling biological electric signal has many covers, often overlaps electrode for sampling biological electric signal and comprises exploring electrode, reference electrode and ground electrode respectively;
Be not connected between described each cover electrode for sampling biological electric signal, gather bioelectrical signals independently of one another respectively.
7. a kind of according to claim 1,2,3,4,5 or 6 has the virtual reality device of the human-computer interaction function based on head bioelectrical signals, it is characterized by, described processing of bioelectric signals module, comprises analog signal processing module, analog-to-digital conversion module and digital signal processing module;
Described analog signal processing module processes the signal that electrode for sampling biological electric signal collects, and described analog-to-digital conversion module passes to digital signal processing module process by after the analog signals digitizing after analog signal processing resume module.
8. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 7, it is characterized by, described exploring electrode and reference electrode are connected the differential input end of described analog signal processing module by shielding line; Described ground electrode is connected to the cancellation circuit signal output part of described analog signal processing module by shielding line.
9. a kind of virtual reality device with human-computer interaction function based on head bioelectrical signals according to claim 7, it is characterized by, described digital signal processing module comprises digital signal pretreatment module, feature signal extraction module and characteristic signal processing module;
Described feature signal extraction module extracts EEG signals, electro-ocular signal and electromyographic signal from the bioelectrical signals after the process of digital signal pretreatment module, and is transferred to described characteristic signal processing module and processes respectively.
10. in virtual reality device, realize a method for the human-computer interaction function based on head bioelectrical signals, it is characterized in that, employ the electrical structure of the virtual reality device in claim 1 ~ 9 described in any one.
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| CN104615243A (en) * | 2015-01-15 | 2015-05-13 | 深圳市掌网立体时代视讯技术有限公司 | Head-wearable type multi-channel interaction system and multi-channel interaction method |
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