CN110134231A - One kind being based on FNIRS Mental imagery brain-computer interactive system and method - Google Patents
One kind being based on FNIRS Mental imagery brain-computer interactive system and method Download PDFInfo
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- CN110134231A CN110134231A CN201910298293.9A CN201910298293A CN110134231A CN 110134231 A CN110134231 A CN 110134231A CN 201910298293 A CN201910298293 A CN 201910298293A CN 110134231 A CN110134231 A CN 110134231A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003340 mental effect Effects 0.000 title claims abstract description 18
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 12
- 230000033001 locomotion Effects 0.000 claims abstract description 102
- 210000004556 brain Anatomy 0.000 claims abstract description 65
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 37
- 238000000605 extraction Methods 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 210000000337 motor cortex Anatomy 0.000 claims abstract description 13
- 230000003595 spectral effect Effects 0.000 claims abstract description 12
- 230000003993 interaction Effects 0.000 claims abstract description 8
- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims description 43
- 238000001228 spectrum Methods 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 9
- 238000004611 spectroscopical analysis Methods 0.000 claims description 8
- 238000004497 NIR spectroscopy Methods 0.000 claims 1
- 238000004458 analytical method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000005055 memory storage Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004566 IR spectroscopy Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0075—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy
-
- 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
- G06F3/012—Head tracking input arrangements
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2576/00—Medical imaging apparatus involving image processing or analysis
- A61B2576/02—Medical imaging apparatus involving image processing or analysis specially adapted for a particular organ or body part
- A61B2576/026—Medical imaging apparatus involving image processing or analysis specially adapted for a particular organ or body part for the brain
-
- 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 present invention relates to one kind to be based on FNIRS Mental imagery brain-computer interactive system and method, belongs to brain-machine interaction and signal processing technology field.The present invention includes near infrared spectrum equipment, data acquisition device, computer and wireless signal transceiver.Data acquisition device is used to acquire the near infrared light spectral signal that brain motor cortex diffraction comes out；Data acquisition device is connected by data transmission wires with computer, and computer is connected by signal transmission wire with wireless signal transceiver；Computer is for being filtered Baseline wander, the processing of feature extraction near infrared light spectral signal and analog signal being converted to digital signal, calculator memory contains the result that brain active regions are divided corresponding to each movement, digital signal and this division result after computer disposal are compared to judgement it is envisioned that the execution signal of a certain movement is issued to controlled device by wireless signal transceiver by wireless signal transceiver by which kind of movement, computer.
Description
Technical field
The present invention relates to one kind to be based on FNIRS Mental imagery brain-computer interactive system and method, belongs to brain-machine interaction and signal
Processing technology field.
Background technique
Near infrared light spectral theory be the absorption characteristic of the infra-red radiation of different wave length is carried out using substance molecular structure and
The instrument of chemical composition analysis.Near infrared spectrum equipment is usually by light source, monochromator, detector and computer treatmenting information system
Composition.According to the difference of light-dividing device, it is divided into color dispersion-type and interference-type.Infrared spectroscopy is balanced to color dispersion-type double light path optical null
For photometer, after sample absorbs the infra-red radiation of certain frequency, transition, the light beam of transmission occur for the vibration level of molecule
The light of middle corresponding frequencies is weakened, and causes the reference light paths intensity difference radiated corresponding to sample arm, to obtain institute's sample
Infrared spectroscopy.Near infrared spectrum belongs to molecular vibration spectrum, is substantially the vibration frequency multiplication and combination of different molecular functional group
Frequently, the functional group of the absorbing wavelength of near infrared spectrum mainly contains hydrogen functional group, including C-H, N-H, O-H, H2O etc..Due to
The activity of brain causes oxygen content in the hemoglobin of brain regional area different, so that the absorption to light is different.Spectrogram
Different absorption peaks represent the different information of sample.And only identical molecular structure could generate identical spectrum；Based on secondary
The specific information of different motion movement can be extracted.Near infrared spectrum detection process have it is time saving it is simple, without destroy, analysis speed
Fastly, the features such as at low cost, result favorable reproducibility.
In existing technology by detection eeg signal and use these EEG signals as control signal to target into
Row control.Since EEG signals are extremely faint, having should not be measured, the features such as vulnerable to interference, therefore most of brain wave acquisition dress
It sets needs to work in good laboratory, and needs to carry out specially treated to head, need to wear under normal conditions special
Electrode cap needs to smear conducting resinl on the electrode.Thus there is the problems such as complicated for operation, portability is poor.Be not suitable in common day
It is used in normal environment.BCI technology based on FNIRS not only has important research meaning in the current information age, but also has
It is widely applied field and real value.BCI technology can directly utilize human body brain near infrared light spectrum signal, pass through the soft of outside
Hardware information processing equipment rapid build Controlling model forms control instruction, and then controls external physical equipment, to reach
The behavior purpose realized is wanted to individual.
Summary of the invention
The present invention provides one kind to be based on FNIRS Mental imagery brain-computer interactive system and method, and interaction results are more accurate,
Time saving, analysis speed is fast.
The technical scheme is that a kind of be based on FNIRS Mental imagery brain-computer interactive system, including near infrared spectrum is set
Standby, data acquisition device, computer and wireless signal transceiver；
The near infrared spectrum equipment includes near-infrared light source transmitting probe, near-infrared light source receiving transducer, near infrared light generation
Device；The near-infrared light source transmitting probe of near infrared spectrum equipment is connected by data transmission wires and near infrared light generation device
It connects；
The near infrared light generation device is used to generate near infrared light, then near infrared light is sent out by near-infrared light source transmitting probe
It is mapped to brain motor cortex, near-infrared light source receiving transducer is used to receive the near infrared light spectrum that brain motor cortex diffraction comes out
Signal is simultaneously sent to data acquisition device；
The near-infrared light source receiving transducer of the near infrared spectrum equipment is connected by data transmission wires with data acquisition device；
The data acquisition device is used to acquire the near infrared light spectral signal that brain motor cortex diffraction comes out；Data acquisition dress
It sets and is connected by data transmission wires with computer, computer is connected by signal transmission wire with wireless signal transceiver；
Computer is for being filtered Baseline wander, the processing of feature extraction near infrared light spectral signal and analog signal being converted to
Digital signal, calculator memory contain that brain active regions corresponding to each movement are divided as a result, after computer disposal
Digital signal and this division result be compared to judgement it is envisioned which kind of movement, computer by wireless signal transmitting-receiving dress
It sets and the execution signal of a certain movement is issued to controlled device by wireless signal transceiver.
Further, the near infrared spectrum equipment uses near-infrared light source transmitting probe, near-infrared light source receiving transducer
Three-dimensional acquisition is carried out to the active regions of brain.
Further, the acquisition for the result that brain active regions corresponding to each movement of calculator memory storage are divided
Mode is as follows:
Near infrared spectra collection is carried out under moving situation to target sample；Near-infrared light source transmitting is installed to user first to visit
Head, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain the near infrared light of these movements
Spectrum, spectrum are acquired by data acquisition device；Obtained spectroscopic data is input to computer by data transmission wires；Computer
The processing of Baseline wander, feature extraction is filtered to signal；Meanwhile the brain active regions of each movement are divided, it is right
The result that the brain active regions of each movement are divided is saved in computer, the comparison and judgement for data.
One kind being based on FNIRS Mental imagery brain-machine interaction method, and specific step is as follows for the method:
Step1, near infrared spectra collection is carried out under moving situation to target sample；Three pairs of near-infrareds are installed to user first
Light source transmitting probe, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain these movements
Near infrared spectrum, spectrum acquires by data acquisition device；Obtain three pairs of spectroscopic datas are inputted by data transmission wires
To computer；Computer is filtered the processing of Baseline wander, feature extraction to signal；Meanwhile it is active to the brain of each movement
Region is divided, and the result divided to the brain active regions of each movement is saved in computer, the comparison for data
And judgement；
Step2, user are envisioned as the limb action to be made according to screen prompt, and limbs are without movement；Three pairs close red
Outer light source transmitting probe, near-infrared light source receiving transducer work at the same time, and data acquisition device acquires the signal of three pairs of probes simultaneously,
And the processing that computer is filtered Baseline wander, feature extraction is transferred data in real time；Feature extraction obtains three groups of numbers
According to feature；
Step3, computer carry out the identification of Imaginary Movement to three groups of data characteristicses of extraction；It is when identification, this three groups of data are special
It levies the result divided with the brain active regions of movement each when movement to compare, if two or more data
When being identified as same action, preliminary judgement is a certain movement；
Step4, computer issue the execution signal of This move, and the execution signal of movement is sent out by wireless signal transceiver
Out, controlled device is arrived.
Further, the Step4 could alternatively be:
Step4.1, simultaneous computer carry out brain active regions corresponding to Imaginary Movement to three groups of data characteristicses of extraction and identify；Know
When other, the result that the brain active regions of this three groups of data characteristicses and movement each when movement are divided is compared, if
When two or more data are identified as same area, it is determined as the brain active regions of a certain movement；
Step4.2, three groups of data characteristicses of extraction are carried out with the movement of Imaginary Movement identification and to three groups of data characteristicses of extraction
When the cerebration region that brain active regions corresponding to progress Imaginary Movement identify is corresponding consistent, it is dynamic that computer issues this
The execution signal of the execution signal of work, movement is issued by wireless signal transceiver, arrives controlled device.
The beneficial effects of the present invention are: the present invention adjudicates the technology combined using near infrared cheracteristics and brain region
Scheme realizes the function of Mental imagery brain-machine interaction.Using wear-type method by the transmitting light source probe of near infrared gear,
Receive the head that light source probe is fixed on people, overall style is simple, is illustrated, and deal is relatively light and weight is uniformly distributed, and practicability is very
It is good, in conjunction with design, guarantee very comfortable and very beautiful；It is active by the spectral signal and brain that acquire Mental imagery in real time
The corresponding movement of region decision process result identification, the result of the action made are more accurate；Near infrared spectrum detection process tool
Have it is time saving it is simple, without destroy, analysis speed is fast, at low cost, result favorable reproducibility the features such as.
Detailed description of the invention
Fig. 1 is sample collection of the invention and obtains the result stream that brain active regions corresponding to each movement are divided
Cheng Tu；
Fig. 2 is broad flow diagram of the invention；
Fig. 3 is near-infrared schematic diagram of the invention.
Specific embodiment
Embodiment 1: as shown in Figure 1-3, a kind of be based on FNIRS Mental imagery brain-computer interactive system, including near infrared spectrum
Equipment, data acquisition device, computer and wireless signal transceiver；
The near infrared spectrum equipment includes near-infrared light source transmitting probe, near-infrared light source receiving transducer, near infrared light generation
Device；The near-infrared light source transmitting probe of near infrared spectrum equipment is connected by data transmission wires and near infrared light generation device
It connects；
The near infrared light generation device is used to generate near infrared light, then near infrared light is sent out by near-infrared light source transmitting probe
It is mapped to brain motor cortex, near-infrared light source receiving transducer is used to receive the near infrared light spectrum that brain motor cortex diffraction comes out
Signal is simultaneously sent to data acquisition device；
The near-infrared light source receiving transducer of the near infrared spectrum equipment is connected by data transmission wires with data acquisition device；
The data acquisition device is used to acquire the near infrared light spectral signal that brain motor cortex diffraction comes out；Data acquisition dress
It sets and is connected by data transmission wires with computer, computer is connected by signal transmission wire with wireless signal transceiver；
Computer is for being filtered Baseline wander, the processing of feature extraction near infrared light spectral signal and analog signal being converted to
Digital signal, calculator memory contain that brain active regions corresponding to each movement are divided as a result, after computer disposal
Digital signal and this division result be compared to judgement it is envisioned which kind of movement, computer by wireless signal transmitting-receiving dress
It sets and the execution signal of a certain movement is issued to controlled device by wireless signal transceiver.
Further, the near infrared spectrum equipment uses near-infrared light source transmitting probe, near-infrared light source receiving transducer
Three-dimensional acquisition is carried out to the active regions of brain.
Further, the acquisition for the result that brain active regions corresponding to each movement of calculator memory storage are divided
Mode is as follows:
Near infrared spectra collection is carried out under moving situation to target sample；Near-infrared light source transmitting is installed to user first to visit
Head, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain the near infrared light of these movements
Spectrum, spectrum are acquired by data acquisition device；Obtained spectroscopic data is input to computer by data transmission wires；Computer
The processing of Baseline wander, feature extraction is filtered to signal；Meanwhile the brain active regions of each movement are divided, it is right
The result that the brain active regions of each movement are divided is saved in computer, the comparison and judgement for data.
One kind being based on FNIRS Mental imagery brain-machine interaction method, and specific step is as follows for the method:
Step1, near infrared spectra collection is carried out under moving situation to target sample；Three pairs of near-infrareds are installed to user first
Light source transmitting probe, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain these movements
Near infrared spectrum, spectrum acquires by data acquisition device；Obtain three pairs of spectroscopic datas are inputted by data transmission wires
To computer；Computer is filtered the processing of Baseline wander, feature extraction to signal；Meanwhile it is active to the brain of each movement
Region is divided, and the result divided to the brain active regions of each movement is saved in computer, the comparison for data
And judgement；
Step2, user are envisioned as the limb action to be made according to screen prompt, and limbs are without movement；Three pairs close red
Outer light source transmitting probe, near-infrared light source receiving transducer work at the same time, and data acquisition device acquires the signal of three pairs of probes simultaneously,
And the processing that computer is filtered Baseline wander, feature extraction is transferred data in real time；Feature extraction obtains three groups of numbers
According to feature；
Step3, computer carry out the identification of Imaginary Movement to three groups of data characteristicses of extraction；It is when identification, this three groups of data are special
It levies the result divided with the brain active regions of movement each when movement to compare, if two or more data
When being identified as same action, preliminary judgement is a certain movement；
Step4, computer issue the execution signal of This move, and the execution signal of movement is sent out by wireless signal transceiver
Out, controlled device is arrived.
Embodiment 2: as shown in Figure 1-3, a kind of be based on FNIRS Mental imagery brain-computer interactive system, including near infrared spectrum
Equipment, data acquisition device, computer and wireless signal transceiver；
The near infrared spectrum equipment includes near-infrared light source transmitting probe, near-infrared light source receiving transducer, near infrared light generation
Device；The near-infrared light source transmitting probe of near infrared spectrum equipment is connected by data transmission wires and near infrared light generation device
It connects；
The near infrared light generation device is used to generate near infrared light, then near infrared light is sent out by near-infrared light source transmitting probe
It is mapped to brain motor cortex, near-infrared light source receiving transducer is used to receive the near infrared light spectrum that brain motor cortex diffraction comes out
Signal is simultaneously sent to data acquisition device；
The near-infrared light source receiving transducer of the near infrared spectrum equipment is connected by data transmission wires with data acquisition device；
The data acquisition device is used to acquire the near infrared light spectral signal that brain motor cortex diffraction comes out；Data acquisition dress
It sets and is connected by data transmission wires with computer, computer is connected by signal transmission wire with wireless signal transceiver；
Computer is for being filtered Baseline wander, the processing of feature extraction near infrared light spectral signal and analog signal being converted to
Digital signal, calculator memory contain that brain active regions corresponding to each movement are divided as a result, after computer disposal
Digital signal and this division result be compared to judgement it is envisioned which kind of movement, computer by wireless signal transmitting-receiving dress
It sets and the execution signal of a certain movement is issued to controlled device by wireless signal transceiver.
Further, the near infrared spectrum equipment uses near-infrared light source transmitting probe, near-infrared light source receiving transducer
Three-dimensional acquisition is carried out to the active regions of brain.
Further, the acquisition for the result that brain active regions corresponding to each movement of calculator memory storage are divided
Mode is as follows:
Near infrared spectra collection is carried out under moving situation to target sample；Near-infrared light source transmitting is installed to user first to visit
Head, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain the near infrared light of these movements
Spectrum, spectrum are acquired by data acquisition device；Obtained spectroscopic data is input to computer by data transmission wires；Computer
The processing of Baseline wander, feature extraction is filtered to signal；Meanwhile the brain active regions of each movement are divided, it is right
The result that the brain active regions of each movement are divided is saved in computer, the comparison and judgement for data.
One kind being based on FNIRS Mental imagery brain-machine interaction method, and specific step is as follows for the method:
Step1, near infrared spectra collection is carried out under moving situation to target sample；Three pairs of near-infrareds are installed to user first
Light source transmitting probe, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain these movements
Near infrared spectrum, spectrum acquires by data acquisition device；Obtain three pairs of spectroscopic datas are inputted by data transmission wires
To computer；Computer is filtered the processing of Baseline wander, feature extraction to signal；Meanwhile it is active to the brain of each movement
Region is divided, and the result divided to the brain active regions of each movement is saved in computer, the comparison for data
And judgement；
Step2, user are envisioned as the limb action to be made according to screen prompt, and limbs are without movement；Three pairs close red
Outer light source transmitting probe, near-infrared light source receiving transducer work at the same time, and data acquisition device acquires the signal of three pairs of probes simultaneously,
And the processing that computer is filtered Baseline wander, feature extraction is transferred data in real time；Feature extraction obtains three groups of numbers
According to feature；
Step3, computer carry out the identification of Imaginary Movement to three groups of data characteristicses of extraction；It is when identification, this three groups of data are special
It levies the result divided with the brain active regions of movement each when movement to compare, if two or more data
When being identified as same action, preliminary judgement is a certain movement；
Step4, simultaneous computer carry out brain active regions corresponding to Imaginary Movement to three groups of data characteristicses of extraction and identify；Identification
When, the result that the brain active regions of this three groups of data characteristicses and movement each when movement are divided is compared, if two
When a or more than two data are identified as same area, it is determined as the brain active regions of a certain movement；
Step5, the movement that three groups of data characteristicses of extraction are carried out with Imaginary Movement identification and three groups of data characteristicses to extraction into
When the cerebration region that brain active regions corresponding to row Imaginary Movement identify is corresponding consistent, computer issues This move
Execution signal, the execution signal of movement issued by wireless signal transceiver, arrives controlled device.
Above in conjunction with attached drawing, the embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (5)
1. one kind is based on FNIRS Mental imagery brain-computer interactive system, it is characterised in that: adopted including near infrared spectrum equipment, data
Acquisition means, computer and wireless signal transceiver；
The near infrared spectrum equipment includes near-infrared light source transmitting probe, near-infrared light source receiving transducer, near infrared light generation
Device；The near-infrared light source transmitting probe of near infrared spectrum equipment is connected by data transmission wires and near infrared light generation device
It connects；
The near infrared light generation device is used to generate near infrared light, then near infrared light is sent out by near-infrared light source transmitting probe
It is mapped to brain motor cortex, near-infrared light source receiving transducer is used to receive the near infrared light spectrum that brain motor cortex diffraction comes out
Signal is simultaneously sent to data acquisition device；
The near-infrared light source receiving transducer of the near infrared spectrum equipment is connected by data transmission wires with data acquisition device；
The data acquisition device is used to acquire the near infrared light spectral signal that brain motor cortex diffraction comes out；Data acquisition dress
It sets and is connected by data transmission wires with computer, computer is connected by signal transmission wire with wireless signal transceiver；
Computer is for being filtered Baseline wander, the processing of feature extraction near infrared light spectral signal and analog signal being converted to
Digital signal, calculator memory contain that brain active regions corresponding to each movement are divided as a result, after computer disposal
Digital signal and this division result be compared to judgement it is envisioned which kind of movement, computer by wireless signal transmitting-receiving dress
It sets and the execution signal of a certain movement is issued to controlled device by wireless signal transceiver.
2. according to claim 1 be based on FNIRS Mental imagery brain-computer interactive system, it is characterised in that: the near-infrared
Spectroscopy equipment carries out three-dimensional adopt to the active regions of brain using near-infrared light source transmitting probe, near-infrared light source receiving transducer
Collection.
3. according to claim 1 be based on FNIRS Mental imagery brain-computer interactive system, it is characterised in that: calculator memory
The acquisition modes for the result that brain active regions corresponding to each movement of storage are divided are as follows:
Near infrared spectra collection is carried out under moving situation to target sample；Near-infrared light source transmitting is installed to user first to visit
Head, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain the near infrared light of these movements
Spectrum, spectrum are acquired by data acquisition device；Obtained spectroscopic data is input to computer by data transmission wires；Computer
The processing of Baseline wander, feature extraction is filtered to signal；Meanwhile the brain active regions of each movement are divided, it is right
The result that the brain active regions of each movement are divided is saved in computer, the comparison and judgement for data.
4. one kind is based on FNIRS Mental imagery brain-machine interaction method, it is characterised in that: specific step is as follows for the method:
Step1, near infrared spectra collection is carried out under moving situation to target sample；Three pairs of near-infrareds are installed to user first
Light source transmitting probe, near-infrared light source receiving transducer, user make corresponding movement according to screen prompt, obtain these movements
Near infrared spectrum, spectrum acquires by data acquisition device；Obtain three pairs of spectroscopic datas are inputted by data transmission wires
To computer；Computer is filtered the processing of Baseline wander, feature extraction to signal；Meanwhile it is active to the brain of each movement
Region is divided, and the result divided to the brain active regions of each movement is saved in computer, the comparison for data
And judgement；
Step2, user are envisioned as the limb action to be made according to screen prompt, and limbs are without movement；Three pairs close red
Outer light source transmitting probe, near-infrared light source receiving transducer work at the same time, and data acquisition device acquires the signal of three pairs of probes simultaneously,
And the processing that computer is filtered Baseline wander, feature extraction is transferred data in real time；Feature extraction obtains three groups of numbers
According to feature；
Step3, computer carry out the identification of Imaginary Movement to three groups of data characteristicses of extraction；It is when identification, this three groups of data are special
It levies the result divided with the brain active regions of movement each when movement to compare, if two or more data
When being identified as same action, preliminary judgement is a certain movement；
Step4, computer issue the execution signal of This move, and the execution signal of movement is sent out by wireless signal transceiver
Out, controlled device is arrived.
5. according to claim 1 be based on FNIRS Mental imagery brain-computer interactive system and method, it is characterised in that: described
Step4 could alternatively be:
Step4.1, simultaneous computer carry out brain active regions corresponding to Imaginary Movement to three groups of data characteristicses of extraction and identify；Know
When other, the result that the brain active regions of this three groups of data characteristicses and movement each when movement are divided is compared, if
When two or more data are identified as same area, it is determined as the brain active regions of a certain movement；
Step4.2, three groups of data characteristicses of extraction are carried out with the movement of Imaginary Movement identification and to three groups of data characteristicses of extraction
When the cerebration region that brain active regions corresponding to progress Imaginary Movement identify is corresponding consistent, it is dynamic that computer issues this
The execution signal of the execution signal of work, movement is issued by wireless signal transceiver, arrives controlled device.
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