CN104257380A - Electroencephalograph collecting and processing system - Google Patents
Electroencephalograph collecting and processing system Download PDFInfo
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- CN104257380A CN104257380A CN201410568640.2A CN201410568640A CN104257380A CN 104257380 A CN104257380 A CN 104257380A CN 201410568640 A CN201410568640 A CN 201410568640A CN 104257380 A CN104257380 A CN 104257380A
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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
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/369—Electroencephalography [EEG]
Abstract
The invention discloses an electroencephalograph collecting and processing system. The electroencephalograph collecting and processing system is formed by sequentially connecting a sensor module for sensing electroencephalographic signals, an electroencephalographic signal modulating device for amplifying and modulating the signals, and a processing device for collecting and storing the signals. The electroencephalograph signal modulating device is formed by connecting the electroencephalograph signal amplifying module and the signal modulating module with an energy module; the sensor module is connected with the electroencephalograph signal amplifying module, and the signal modulating module is connected with the processing device. The electroencephalograph collecting and processing system is characterized in that the sensor module is an in-ear electrode. Compared with other methods, the electroencephalograph collecting and processing system omits scalp electrodes, caps or the like, thereby being convenient to use; signal collection and equipment power supply are achieved through the audio channel of the processing device without dedicated devices.
Description
Technical field
The present invention relates to wearable smart machine field, refer more particularly to a kind of electroencephalogram acquisition processing system.
Background technology
Neuroscience Research shows, and after brain produces consciousness and before action executing, corresponding change can occur nervous system electrical activity.By carrying out Classification and Identification to signal, tell the action intention causing brain Electrical change, the thinking activities of people is transformed into command signal and drives external equipment, realize the control of the human brain external portion environment when not having muscle and nervus peripheralis participates in directly, Here it is brain-computer interface (brain-computer interface, BCI) basic functional principle, brain-computer interface is a kind of brand-new communication mode.
The brain of people, particularly cortical cell, also exist spontaneous electric activity frequently, without the need to any environmental stimuli.The current potential be recorded to from brain electrode is the reaction to a large amount of neuron activity of brain, and be low to moderate microvolt level, the current potential fluctuation in time of this electrical activity becomes electroencephalogram (Electroencephalograph, EEG).EEG has reacted the electrical activity of cerebral tissue and the functional status of brain, the sensation of brain, motion and cognitive consciousness are cognizable in spontaneous EEG in theory, therefore EEG becomes the first-selected instrument of BCI research, by identifying this intention, it is expressed as the direct control to external equipment.
Existing electroencephalogram acquisition method utilizes installing electrodes on scalp to be extracted by the electrical activity of cell and record after electroencephalograph amplifies to obtain.Scalp electrode needs special arrangement to fix, and needs trained professional operation.
Utility model patent CN201320486784 discloses a kind of electroencephalogram harvester, be mainly the design of a kind of novel sucked type magnetic pole, but the measuring method adopted remains traditional scalp electrode mode, uses inconvenience, and need to use special electroencephalogram harvester.The object of this patent is to provide one to supply eeg measurement method used in everyday, adopts In-Ear design, can be integrated with audio ear buds, uses treatment facility such as the voice-grade channel of smart mobile phone to carry out signals collecting, and it is very convenient to use.
Existing equipment generally need access special power supply as D.C. regulated power supply, battery or be that equipment is powered by particular interface (as USB) from the method for other equipment power-extractings, uses inconvenience, increases weight of equipment and increase cost.
Summary of the invention
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of electroencephalogram acquisition processing system, by induction EEG signals sensor assembly, carry out signal and amplify and be connected in sequence with the EEG signals conditioning device of modulation and the treatment facility that carries out signals collecting and storage; EEG signals conditioning device is connected to form with EEG signals amplification module, signal madulation module respectively by energy module; Sensor assembly is connected with EEG signals amplification module, and signal madulation module is connected with treatment facility; It is characterized in that sensor assembly is In-Ear electrode.
Described treatment facility is made up of audio input channel, audio frequency output channel, signal receiving module, data memory module and simple signal generation module; Audio input channel, signal receiving module are connected successively with data memory module, and simple signal generation module is connected with audio frequency output channel; Signal madulation module is connected with the audio input channel for the treatment of facility; Described energy module is connected with the audio frequency output channel for the treatment of facility.
In above-mentioned EEG signals amplification module, EEG signals amplification module contains amplifier, amplifier adopts power down signal amplifier, EEG signals carries out enlarge leadingly through differential amplifier circuit, arrive modulation module, through modulation module, EEG signals is modulated to high band by 0-100Hz, then the audio input channel arriving signal demodulation module of treated equipment.
Above-mentioned energy module provides the function of electric energy needed for EEG signals amplification module and signal madulation module.The electric energy produced when energy module is by collecting storing audio output channel output audio signal is EEG signals amplification module and signal madulation module for power supply.When audio frequency output channel no audio signal exports, send simple signal by the simple signal generation module for the treatment of facility and power.
Above-mentioned audio frequency exports and can be connected with In-Ear Headphones simultaneously, and dio Output Modules output audio signal, is conveyed into aural headphone, is play the audio signals such as music by earphone.
Above-mentioned treatment facility carries out demodulation to the modulation signal obtained by audio input channel, obtains EEG signal, and usage data memory module stores.
Audio interface on patent utilization treatment facility of the present invention, the energy being collected audio frequency output channel output by energy module is that device is powered, without the need to configuring extra power supply.
The present invention compares additive method, without the need to installing scalp electrode, headgear etc., easy to use.Signals collecting and equipment are powered and to be completed, without the need to special equipment by the voice-grade channel on treatment facility.
Accompanying drawing explanation
Fig. 1 is a kind of electroencephalogram acquisition processing system structured flowchart.
Fig. 2 is EEG Processing device software flow process functional block diagram.
Detailed description of the invention
Specifically implement to be described further to the present invention below in conjunction with accompanying drawing:
As shown in Figure 1, the present invention includes sensor assembly, EEG signals conditioning device, treatment facility three parts, wherein sensor assembly is In-Ear electrode, and concrete form is the metal electrode be attached on earplug surface; The feeble computer signals sensed is transferred to Electroencephalo signal amplifier and amplifies by metal electrode.EEG signals conditioning device comprises EEG signals amplification module, signal madulation module, energy module; Treatment facility comprises audio input channel, audio frequency output channel and signal receiving module, data memory module and simple signal generation module.Treatment facility includes but not limited to: smart mobile phone, panel computer, computer or the similar home-built equipment with computing function and software.
EEG signals amplification module in Fig. 1 is in order to by after the decay of the soft tissue such as skull and muscle, and the tens of faint low frequency computer signal of telecommunication to hundreds of microvolt that generally only has recorded in auditory meatus amplifies.EEG signals amplification module should meet high input impedance, high cmrr, and low noise, low drifting, nonlinearity are little, suitable frequency band and the requirement of dynamic range.Power because energy module uses electric capacity to collect audio output signal energy, therefore EEG signals amplification module adopts the amplifying device with low-power consumption feature.
Signal madulation module solves the modulation problems of EEG signals, so that the transmission of EEG signals and process.The EEG signals main energetic that EEG signals amplification module in Fig. 1 exports concentrates within the scope of 0-100Hz, the receivable frequency range of audio signal sample passage is about 20-20000Hz, therefore the Audio Input Modules that the EEG signals that EEG signals amplification module exports directly can not be transferred to treatment facility carries out signals collecting, needs, through signal madulation module, EEG signals is modulated to the audio input channel that high band (as 10000Hz) is transferred to treatment facility again.Select the frequency modulator of low-power consumption, the frequency of high-frequency oscillation signal is changed by the rule of modulation signal, and amplitude preservation is constant, capacity of resisting disturbance is strong.Signal madulation module should meet low-power consumption, high efficiency, feature that stability is strong.
Energy module in Fig. 1 provides the function of electric energy needed for EEG signals amplification module and signal madulation module, the audio signal that above-mentioned module audio reception outfan exports, and connects storage capacitor by commutation diode.In the commutation diode conducting phase, storage capacitor is charged; And in the commutation diode off period, electric capacity is EEG signals amplification module and signal madulation module for power supply, so ensure the seriality that power supply exports.Adopting electric capacity to store release electric energy is portable, convenient in order to equipment, does not need external power supply.When dio Output Modules no audio signal exports, send simple signal by the simple signal generation module for the treatment of facility and power.
Signal receiving module in treatment facility, data memory module and simple signal generation module can use software simulating, as shown in Figure 2.The basic function of this software comprises signal receiving, data store and produce simple signal, and its expanded function also can comprise the function such as electroencephalogramsignal signal analyzing, software control.
First software carry out the initialization for the treatment of facility, then judge whether present video output channel has signal to export, and as then do not produced simple signal by simple signal generation module, exports, for EEG signals conditioning device is powered from audio frequency output channel; Secondly, start that audio input channel gathers that EEG signals conditioning device imports into through warbled EEG signals, use signal receiving module to carry out demodulation, obtain real EEG signal, and store.
Above-mentioned software also can carry out feature extraction to the EEG signals after demodulation, tells the action intention or emotion changes that cause brain Electrical change, and can carry out corresponding software function control accordingly.
Wherein software function controls to can be applicable to following scene: when wearable device is listened to the music, and whether the eeg analysis current emotional according to gathering mates appropriately with music, and intelligence switches song; Use said apparatus during sleep, said apparatus can be utilized to analyze the current sleep degree of depth, judge current volume and song style whether suitable, Intelligent adjustment volume, switching song style.
What finally illustrate is; below described by reference to the accompanying drawings embodiment is only the preferred embodiment of the present invention; and be not the restriction of protection scope of the present invention; any based on the present invention's improvement of doing of spirit or equivalently to replace; only otherwise depart from the spirit and scope of the present invention, all should be encompassed within scope.
Claims (6)
1. an electroencephalogram acquisition processing system, by induction EEG signals sensor assembly, carry out signal and amplify and be connected in sequence with the EEG signals conditioning device of modulation and the treatment facility that carries out signals collecting and storage; EEG signals conditioning device is connected to form with EEG signals amplification module, signal madulation module respectively by energy module; Sensor assembly is connected with EEG signals amplification module, and signal madulation module is connected with treatment facility; It is characterized in that sensor assembly is In-Ear electrode.
2. a kind of electroencephalogram acquisition processing system according to claim 1, is characterized in that described treatment facility is made up of audio input channel, audio frequency output channel, signal receiving module, data memory module and simple signal generation module; Audio input channel, signal receiving module are connected successively with data memory module, and simple signal generation module is connected with audio frequency output channel; Signal madulation module is connected with the audio input channel for the treatment of facility; Described energy module is connected with the audio frequency output channel for the treatment of facility.
3. a kind of electroencephalogram acquisition processing system according to claim 2, it is characterized in that described EEG signals amplification module contains amplifier, amplifier adopts power down signal amplifier, EEG signals is modulated to high band by 0-100Hz by signal madulation module, then the audio input channel arriving signal demodulation module of treated equipment.
4. a kind of electroencephalogram acquisition processing system according to claim 2, it is characterized in that energy module provides the function of electric energy needed for EEG signals amplification module and signal madulation module, the electric energy produced when energy module is by collecting storing audio output channel output audio signal, for EEG signals amplification module and signal madulation module for power supply, when audio frequency output channel no audio signal exports, send simple signal by the simple signal generation module for the treatment of facility and power.
5. a kind of electroencephalogram acquisition processing system according to claim 2, it is characterized in that audio frequency exports can be connected with In-Ear Headphones simultaneously, and dio Output Modules output audio signal, is conveyed into aural headphone, by earphone playing audio signal.
6. a kind of electroencephalogram acquisition processing system according to claim 2, it is characterized in that treatment facility carries out demodulation to the modulation signal obtained by audio input channel, obtain EEG signal, usage data memory module stores.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104853288A (en) * | 2015-04-28 | 2015-08-19 | 成都腾悦科技有限公司 | Computer real-time interactive system based on brain wave wired earphone |
| CN105982666A (en) * | 2015-02-12 | 2016-10-05 | 中国科学院上海高等研究院 | Ear-wearing type brain wave collecting system |
| CN107071612A (en) * | 2017-03-20 | 2017-08-18 | 广东小天才科技有限公司 | A kind of played control method and earphone based on earphone |
| CN107479448A (en) * | 2017-09-21 | 2017-12-15 | 广州市润杰医疗器械有限公司 | A kind of device and method for eliminating signal transmitting and receiving delay |
| CN110018738A (en) * | 2019-03-04 | 2019-07-16 | 华南理工大学 | A kind of emotion converting system based on real scene emotional expression |
| CN110353670A (en) * | 2019-07-04 | 2019-10-22 | 北京航空航天大学 | A kind of supra-aural eeg signal acquisition device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105982666A (en) * | 2015-02-12 | 2016-10-05 | 中国科学院上海高等研究院 | Ear-wearing type brain wave collecting system |
| CN104853288A (en) * | 2015-04-28 | 2015-08-19 | 成都腾悦科技有限公司 | Computer real-time interactive system based on brain wave wired earphone |
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| CN110018738B (en) * | 2019-03-04 | 2021-09-21 | 华南理工大学 | Emotion conversion system based on real scene emotion expression |
| CN110353670A (en) * | 2019-07-04 | 2019-10-22 | 北京航空航天大学 | A kind of supra-aural eeg signal acquisition device |
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Application publication date: 20150107 |