CN106798562B - Vestibular electro photoluminescence spatial disorientation counterdevice based near infrared spectrum imaging drive - Google Patents
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Abstract
Monitor whether pilot occurs flying illusion, which kind of flying illusion judgement is and triggering vestibular egersimeter issues the device of corresponding stimulus sequence confrontation flying illusion when certain flying illusion occurs using function near infrared spectrum imaging device combination gyroscope the present invention provides a kind of, it include: function near infrared spectrum imaging device, for acquiring cerebral cortex blood oxygen concentration signal during pilot flight, it identifies blood oxygen signal feature, judges whether that flying illusion occurs；Gyroscope, for detecting pilot's head movement situation；Vestibular electrical stimulation device changes human vestibule organ semicircular canal input signal, fights flying illusion for applying vestibular electro photoluminescence；Computer is controlled, for controlling stimulation mode, stimulated current mode, intensity and the stimulation time of vestibular electrical stimulation device, real-time display relevant parameter.The present invention can monitor spatial cognition state of the people in flight course by above-mentioned apparatus, apply vestibular electro photoluminescence in time when flying illusion occurs, and fight spatial disorientation.
Description
Technical field
The present invention relates to aeromedicine engineering research fields, specifically a kind of to utilize function near infrared spectrum imaging system
System (fNIRS) combine gyroscope monitoring pilot whether occur flying illusion, judgement be which kind of flying illusion and certain flight
Triggering vestibular egersimeter issues the device of corresponding vestibular electro photoluminescence sequence confrontation flying illusion when illusion occurs.
Background technique
Spatial disorientation is also known as flying illusion, refer to aircrew in flight course to aircraft and the position of itself,
The false perception of the parameters such as posture and motion profile.This false perception is easy to make if not found and being handled in time
At aircraft accident.Research thinks that the essence of spatial disorientation is that the spatial orientation organ of human body is unable to satisfy aerial three at present
The high-speed motion environment of dimension space.Therefore, spatial disorientation awing inevitably occurs for pilot.
Spatial disorientation can be divided into Visual spatial disorientation and vestibular spatial disorientation by risk factor, and
And vestibular spatial disorientation caused by vestibular origin illusion is normally more fatal.Since pilot cannot recognize to fly in time
The generation of illusion, and lack effective counter-measure, spatial disorientation may cause serious aircraft accident, cause huge
Economic loss and personal injury.
Therefore, there is an urgent need in the art to a kind of device, following functions be can be realized:
The brain activity state and head pose of pilot are monitored and are identified, can find that pilot sends out in time
Flying illusion is given birth to；
When flying illusion occurs, pilot can be prompted, and the state of pilot is sent to ground control
Center processed；
When flying illusion occurs, vestibular electro photoluminescence can be applied to pilot, pilot is promoted to be returned to correctly
Spatial cognition state.
The behavior and cognition of human body and the activity of brain are closely related, and the oxygen content of blood of brain leveling is that measurement cortex is living
The important indicator of jump degree.The rising and deoxidation of oxygen-containing hemoglobin concentration are shown as when cerebral cortex specific region is activated
The decline of hemoglobin concentration.When flying illusion of the same race does not occur, the different region of cerebral cortex is activated or inhibits, therefore table
Reveal different blood oxygen characteristics.FNIRS inhales the near infrared light of different wave length using oxygen-containing hemoglobin and deoxyhemoglobin
The difference of yield, the variation by detecting near infrared light intensity can obtain the change of blood oxygen concentration.
Vestibular electro photoluminescence is to simulate the effective means of vestibular spatial disorientation, similarly, can be compensatory by applying
Vestibular electro photoluminescence correct flying illusion, so that pilot is restored correct spatial cognition.
Summary of the invention
The present invention provides one kind can pilot's brain activity state is monitored and be identified, and wrong to flight occurs
The device of pilot's compensating property vestibular electro photoluminescence of feel.
Device in the present invention includes: function near infrared spectrum imaging device, acquires pilot's cerebral cortex blood oxygen concentration
Variable signal identifies blood oxygen signal feature, and whether instruction pilot's cerebration state is normal, and it is wrong which kind of flight judgement has occurred
Feel；
Gyroscope, for obtaining pilot's head movement and location parameter, such as the displacement of pilot's head movement, angle and speed
Degree determines direction and the degree of flying illusion, determines vestibular electrical stimulation pattern；
Mastoid process applies specified, controllable electro photoluminescence after vestibular electrical stimulation device is picked up the ears to pilot two, change of flight person's
The input signal of vestibular organ semicircular canal and otolith fights spatial disorientation；
Computer is controlled, is connect by bluetooth with the vestibular electrical stimulation device, for controlling the vestibular electro photoluminescence dress
Stimulus type, stimulated current mode, intensity and the stimulation time set, real-time display vestibular parameters of electrical stimulation, and it is close including function
Infrared spectroscopy image acquisitions and processing unit record the variation of pilot's blood oxygen concentration in real time；
The data judgement detected according to the signal characteristic of function near infrared imaging device identification in conjunction with the gyroscope
Which kind of flying illusion occurs for pilot, and specifies stimulus sequence based on judging that recognition result driving vestibular electrical stimulation device generates,
Corresponding vestibular electrical stimulus patterns can produce for different flying illusions.
Function near infrared spectrum imaging device includes one chip head cap, near-infrared light source probe, near infrared light detector spy
Head, conduction optical fiber and master control cabinet: light source and detector probe are arranged on head cap, and head cap main body uses soft material, end
Using Metallic anchors, head cap can be made to be fixed on head, probe is fitted tightly over scalp, improves the accuracy of signal, probe can
With installation and removal；The near infrared light of three kinds of different wave lengths is issued by light source probe, by corticocerebral absorption and reflection quilt
Detector probe receives；The Strength Changes of the near infrared light of three kinds of wavelength have corresponded to hemoglobin total amount in cerebral cortex, oxygen-containing
The variation of hemoglobin, deoxy-hemoglobin concentrations；It include control circuit, amplifying circuit, photoelectric conversion module in master control cabinet
Deng.
Vestibular electrical stimulation device includes power supply, control circuit, conducting wire and electrode slice etc..Electric stimulation electrode selects Ag/AgCl
Electrode, electrode cable select electrocardio measurement conducting wire.The device can apply the stimulation of Three models: after picking up the ears to two mastoid process into
Row electro photoluminescence, mastoid process and forehead, which carry out mastoid process and left and right temple after stimulating and picking up the ears to two, after picking up the ears to two stimulates, and comes
Change the input signal of the vestibular organ semicircular canal of measured.There are five types of forms for stimulated current: square wave, sine wave, sawtooth wave, three
Angle wave and stimulus of direct current.Electric current is coupled by electrode slice with the two sides mastoid process of people through output end, realizes the conducting of electric current and human body.
The stimulus sequence that can fight a variety of flying illusions, the spy sent according to fNIRS have been prestored in vestibular electro photoluminescence control software
The sign corresponding stimulus sequence of signal behavior is stimulated.
Gyroscope can be placed on the inside of aircrew helmet, available pilot's head movement and location parameter, like flying
The displacement of office staff's head movement, angle and speed, determine direction and the degree of flying illusion, finally determine in conjunction with fNIRS signal characteristic
Determine vestibular electrical stimulation pattern；
It controls computer and fNIRS signal acquisition software is housed, acquire fNIRS signal in real time, and carry out signal processing automatically
And pattern-recognition, judging result is transmitted to vestibular egersimeter control software.Vestibular egersimeter passes through with control computer
Bluetooth connection can set the mode of vestibular electro photoluminescence, stimulated current type, intensity by the control software in control computer
And stimulation time.
Beneficial effect
The vestibular electro photoluminescence spatial disorientation confrontation dress based on function near infrared spectrum imaging drive that the present invention designs
Setting can awing realize that brain activity state to pilot and head pose are monitored and identify, in time discovery flight
Flying illusion has occurred in member.When flying illusion occurs, pilot can not only be prompted, moreover it is possible to by the state of pilot
It is sent to ground control centre.Meanwhile when flying illusion occurs, vestibular electro photoluminescence, timely correction flight are applied to pilot
The cognitive state of member's mistake.
The present invention portable can be installed in pilot's cockpit using fNIRS as brain blood oxygen signal detection instrument, be occupied
Space is small, does not influence pilot's normal operating.And compared to fMRI and PET, fNIRS temporal resolution is high, when signal delay
Between less than 1 second, this for find and fight in time flying illusion play the role of it is vital.
FNIRS signal processing software in the present invention can automatically remove physiological noise and motion artifact in signal, right
Pilot does not have kinematic constraint, not will cause the discomfort on any body, can collect the accurate letter under nature mode of operation
Number.
The present invention combines fNIRS with gyroscope, what the former has occurred by identification cerebral cortex blood oxygen signal judgement
Kind flying illusion, the latter are occurred by measuring direction, displacement, speed and the angle of pilot's head movement and further determined
The directionality and seriousness of flying illusion.The synthesis of fNIRS and gyroscope information, which can have flying illusion, more precisely to be sentenced
It is disconnected.
The present invention is applied to vestibular electro photoluminescence the confrontation of spatial disorientation, by changing electrical stimulus patterns, electric current side
The correction that a variety of flying illusions are realized to, power frequency and current strength has been filled up and has realized flying illusion in flight course
Technological gap.Vestibular electrical stimulation current intensity and stimulation time are controllable, are a safe and reliable technologies, and will not be to flight
Member causes the uncomfortable or psychological burden on body.
The vestibular electro photoluminescence spatial disorientation confrontation dress based on function near infrared spectrum imaging drive that the present invention designs
Set change current flying illusion it is not noticeable and occur flying illusion can only be gone by subjective consciousness confrontation two statuses, mention
A kind of measure that can find in time and effectively antagonize flying illusion has been supplied, has been caused for being avoided in live flying by flying illusion
Aircraft accident generation, ensure the safety of pilot and aircraft, reduce personal injury and economic loss.
Detailed description of the invention
Fig. 1 is the vestibular electro photoluminescence spatial disorientation counterdevice structure based on function near infrared spectrum imaging drive
Figure；
Fig. 2 is based on the vestibular electro photoluminescence spatial disorientation counterdevice work based on function near infrared spectrum imaging drive
Make schematic diagram.
Drawing reference numeral explanation
Function near infrared imaging master control cabinet 1, connecting line 2 control computer 3, optical fiber 4, Metallic anchors 5, one chip
Head cap main body 6, near-infrared light source probe 7, near infrared detector probe 8, vestibular electrical stimulation device 9, conducting wire 10, electrode slice 11a,
11b, 11c, 11d, 11e, gyroscope 12.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
Vestibular electro photoluminescence spatial disorientation counterdevice based on function near infrared spectrum imaging drive of the invention,
Structure chart is as shown in Figure 1.
Device in the present invention includes: function near infrared spectrum imaging device, and acquisition pilot's cerebral cortex brain blood oxygen is dense
Variable signal is spent, identifies blood oxygen signal feature, whether instruction pilot's cerebration state is normal, judges which kind of flight mistake occurs
Feel；
Gyroscope 12 detects pilot's head pose and head movement displacement, angle and speed, for determining that vestibular electricity pierces
Energizing mode；
Vestibular electrical stimulation device 9, mastoid process applies specified, controllable electro photoluminescence, change of flight person after picking up the ears to pilot two
Vestibular organ semicircular canal and otolith input signal, fight spatial disorientation；
Computer 3 is controlled, is connect by bluetooth with the vestibular electrical stimulation device, for controlling the vestibular electro photoluminescence dress
Stimulus type, stimulated current mode, intensity and the stimulation time set, real-time display relevant parameter, and including function near infrared light
Image acquisitions and processing unit are composed, records the variation of pilot's blood oxygen concentration in real time；
The data judgement detected according to the signal characteristic of function near infrared imaging device identification in conjunction with the gyroscope
Which kind of flying illusion occurs for pilot, and specifies stimulus sequence based on judging that recognition result driving vestibular electrical stimulation device 9 generates,
Corresponding vestibular electrical stimulus patterns can produce for different flying illusions.
The function near infrared spectrum imaging device includes one chip head cap 6, near-infrared light source probe 7, near infrared light spy
Survey device probe 8, conduction optical fiber 4 and master control cabinet 1: light source probe 7 and detector probe 8 are arranged in head cap main body 6, head cap master
Body 6 uses soft material, and end uses Metallic anchors 5, and head cap 6 can be made to be fixed on head, and probe is fitted tightly over scalp, mentions
The accuracy of high RST, probe can mount and dismount；The near infrared light of three kinds of different wave lengths is issued by light source probe 7, is passed through
Corticocerebral absorption and reflection are received by detector probe 8；The Strength Changes of the near infrared light of three kinds of wavelength have corresponded to brain
The variation of hemoglobin total amount, oxygen-containing hemoglobin, deoxy-hemoglobin concentrations in cortex；It include control electricity in master control cabinet 1
Road, amplifying circuit, photoelectric conversion module etc..
The vestibular electrical stimulation device 9 includes power supply, control circuit, conducting wire 10 and electrode slice 11 etc..Electric stimulation electrode 11
Ag/AgCl electrode is selected, electrode cable 10 selects electrocardio measurement conducting wire.The device can apply the stimulation of Three models: right
Two pick up the ears after mastoid process carry out electro photoluminescence, mastoid process and forehead stimulate and mastoid process and the left and right sun after picking up the ears to two after picking up the ears to two
Cave is stimulated, and the input signal of the vestibular organ semicircular canal of change of flight person is carried out.Stimulated current is there are five types of form: square wave, just
String wave, sawtooth wave, triangular wave and stimulus of direct current.Electric current is coupled by electrode slice with the two sides mastoid process of people through output end, realizes electricity
The conducting of stream and human body.The stimulus sequence that a variety of confrontation flying illusions have been prestored in vestibular electro photoluminescence control software, according to
The characteristic signal that fNIRS is sent selects corresponding stimulus sequence to be stimulated.
The gyroscope 12 can be placed on the inside of aircrew helmet, for obtaining pilot's head pose parameter, in conjunction with
FNIRS signal judges whether that flying illusion occurs.
The control computer 3 is equipped with fNIRS signal acquisition software, acquires fNIRS signal in real time, and carry out signal automatically
Judging result is transmitted to vestibular egersimeter control software by processing and pattern-recognition.It controls computer 3 and vestibular electro photoluminescence fills
9 are set by bluetooth connection, the mode of vestibular electro photoluminescence, stimulated current class can be set by the control software in control computer
Type, intensity and stimulation time.
Workflow of the invention is as shown in Figure 2.
Specific implementation case using usage of the invention:
Firstly, according to pre-designed probe arrangement, near infrared light light source probe 7 and near infrared light receiver
Probe 8 is mounted on the mounting hole of head cap 6, and head cap 6 is placed on pilot head, it is ensured that probe is directly in close contact with scalp
Afterwards, the fixed head cap of Metallic anchors 5 is pressed.
It is attached to mastoid process after pilot two picks up the ears respectively, electrode patch is sticked in two sides temple and place between the eyebrows position, by vestibular electricity
Five electrode slices 11 are stimulated to be separately fixed on five electrode patch.
The vestibular electro photoluminescence opened in control computer 3 controls software, is connected to vestibular electro photoluminescence dress by bluetooth module
Set 9.
FNIRS master control cabinet 1 is connect by connecting line 2 with control computer 3, the fNIRS in control computer 3 is opened
Signal sampling and processing software sets signal sampling channel quantity, signal acquisition frequency, filtering parameter and photoelectric conversion ginseng
Number starts to acquire blood oxygen signal.
The automatic collection to signal, processing, conversion and knowledge may be implemented in the fNIRS Signal sampling and processing software
Not, flying illusion is found in time.
FNIRS starts to monitor pilot's cerebral cortex blood oxygen signal, while gyroscope start recording head movement parameter, this
A little parameters are by the control centre of real-time transmission to ground, in order to which ground control personnel have found that software does not check different in time
Regular signal.
The signal processing software of fNIRS carries out signal processing and identification automatically, occurs when checking certain flying illusion, one
Aspect triggers alarm signal, reminds pilot that spatial disorientation occurs at this time, and information flight should be shown in strict accordance with instrument；
On the other hand the orientation and motion information for combining gyroscope 12 to provide, further determine that the directionality and serious journey of flying illusion
Degree, such as how many angle is yawed, velocity and acceleration is respectively how many still to right avertence to left avertence.
Judging result based on fNIRS and gyroscope 12, drives vestibular electro photoluminescence software, and fNIRS signal has determined vestibular
The form of electro photoluminescence, three electrode stimulatings or four electrode stimulatings in this way are more using square wave stimulation or sine wave stimulation, frequency
Few, the information that gyroscope provides has determined the current direction of vestibular electro photoluminescence, intensity, duration.
Vestibular egersimeter 9 starts to apply vestibular electro photoluminescence to pilot, while continuing to acquire blood oxygen signal, if blood oxygen is believed
It number is returned to normal condition, stops applying vestibular electro photoluminescence, if continuing to show as flying illusion state, continues to vestibular electricity
Stimulation, until signal shows that pilot is restored to normal cognition state.
The signal characteristic information of a variety of flying illusions is saved in the fNIRS signal processing software, can automatically into
Row signal mode identification, it is desirable that recognition accuracy reaches 80%.
The vestibular electrical stimulation pattern for fighting a variety of spatial disorientations is saved in the vestibular electro photoluminescence software, is such as answered
Anode is then applied in the galvanic current stimulation in left side to inclination illusion to the right.The current strength of vestibular electro photoluminescence can flexible modulation.
It should be understood that only being illustrated rather than in described above and explanation to the description of the invention carried out limited
, and under the premise of not departing from the present invention as defined by the appended claims, above-described embodiment can be carried out various
Change, deform, and/or corrects.
Claims (3)
1. the vestibular electro photoluminescence spatial disorientation counterdevice based near infrared spectrum imaging drive characterized by comprising
Function near infrared spectrum imaging device acquires pilot's cerebral cortex brain oxygen density variable signal, identifies blood oxygen signal
Feature, whether instruction pilot's cerebration state is normal, judges which kind of flying illusion occurs；
Gyroscope detects pilot's head pose and head movement displacement, angle and speed, for determining vestibular electro photoluminescence mould
Formula；Vestibular electrical stimulation device, mastoid process applies specified, controllable electro photoluminescence, the vestibular of change of flight person after picking up the ears to pilot two
The input signal of organ semicircular canal and otolith fights spatial disorientation；
Computer is controlled, is connect by bluetooth with the vestibular electrical stimulation device, for controlling the vestibular electrical stimulation device
Stimulus type, stimulated current mode, intensity and stimulation time, real-time display relevant parameter, and including function near infrared spectrum at
As Signal sampling and processing device, the variation of pilot's blood oxygen concentration is recorded in real time；
The data judgement detected according to the signal characteristic of function near infrared spectrum imaging device identification in conjunction with the gyroscope
Which kind of flying illusion occurs for pilot, and specifies stimulus sequence based on judging that recognition result driving vestibular electrical stimulation device generates,
Corresponding vestibular electrical stimulus patterns can produce for different flying illusions；
Vestibular electrical stimulation device applies vestibular electro photoluminescence to pilot, while continuing to acquire blood oxygen signal, if blood oxygen signal is replied
To normal condition, stops application vestibular electro photoluminescence if continuing to show as flying illusion state and continues to vestibular electro photoluminescence,
Until signal shows that pilot is restored to normal cognition state.
2. vestibular electro photoluminescence spatial disorientation counterdevice according to claim 1, which is characterized in that the control meter
Calculation machine prestores the stimulus sequence for fighting a variety of flying illusions, for being supplied to the vestibular electrical stimulation device.
3. vestibular electro photoluminescence spatial disorientation counterdevice according to claim 1, which is characterized in that the function is close
Infrared spectroscopy imaging device includes multiple probes, and multiple probes are arranged on one chip head cap, and head cap is equipped with Metallic anchors, is made
Head cap can be securely fixed on pilot's head, and probe is in close contact with scalp, improve function near infrared spectrum imaging letter
Number accuracy.
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| CN113633262B (en) * | 2021-08-13 | 2023-08-18 | 嘉兴知芯电子科技有限公司 | Near infrared spectrum brain function imaging system and imaging signal sampling method |
| CN113925490B (en) * | 2021-10-14 | 2023-06-27 | 河北医科大学 | Space orientation obstacle classification method |
| CN116403442B (en) * | 2023-06-07 | 2023-08-04 | 中国人民解放军空军特色医学中心 | Early warning method and system for flight accidents caused by space orientation obstacle |
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| CN2629653Y (en) * | 2003-05-30 | 2004-08-04 | 张艳春 | Humanbody vestibular-sense function stabillity tester |
| US10076655B2 (en) * | 2007-09-21 | 2018-09-18 | Koninklijke Philips N.V. | Vestibular stimulation system |
| CN202161317U (en) * | 2011-07-29 | 2012-03-14 | 中国科学院沈阳自动化研究所 | Helm for acquiring brain signal by combining electroencephalography and near-infrared spectroscopy |
| CN202198571U (en) * | 2011-08-09 | 2012-04-25 | 中国人民解放军空军航空医学研究所 | Multipurpose integrated head-eye movement measuring equipment |
| EP2967484A4 (en) * | 2013-03-15 | 2016-11-09 | Adam J Simon | System and signatures for the multi-modal physiological stimulation and assessment of brain health |
| CN104524691A (en) * | 2015-01-27 | 2015-04-22 | 中国人民解放军海军总医院 | Vestibular illusion inducing device |
| CN105433909B (en) * | 2015-12-29 | 2018-06-12 | 中国人民解放军空军总医院 | The inspection of vestibular equilibrium function, rescues equipment at acclimatization |
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