WO2014063507A1 - 一种头戴式脑电波检测仪 - Google Patents
一种头戴式脑电波检测仪 Download PDFInfo
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- WO2014063507A1 WO2014063507A1 PCT/CN2013/080008 CN2013080008W WO2014063507A1 WO 2014063507 A1 WO2014063507 A1 WO 2014063507A1 CN 2013080008 W CN2013080008 W CN 2013080008W WO 2014063507 A1 WO2014063507 A1 WO 2014063507A1
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- Prior art keywords
- brain wave
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- head
- processing module
- module
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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
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
- A61B5/0006—ECG or EEG signals
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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
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
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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]
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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
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
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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
Definitions
- the present application relates to a biological signal detecting device, and in particular to a head-mounted brain wave detector.
- a head-mounted brainwave detector that detects brainwave signals from the epidermis of the human head for monitoring during medical procedures or home health care.
- the existing head-mounted brain wave detector mainly includes a sensor module and an EEG analysis module, and usually the sensor module and the EEG analysis module are integrally fixed on the same bracket, so that when the brain wave detector is manufactured, the same is usually used.
- the mold produces the same batch, size, and structure. If it is necessary to produce products of different sizes and different shapes according to customer needs, production is difficult and the manufacturing cost is high. This is also the reason why the market is usually a range of adapter head types.
- the scope of the adapter head is a standard Western adult head type.
- the one-piece head-mounted brainwave detector can only be replaced as a whole when a fault occurs after a long period of use, and the effective parts that can still work without failure can not be fully utilized.
- the technical problem to be solved by the present application is: to make up for the deficiencies of the above prior art, and to provide a head-mounted brain wave detector, the EEG analysis device and the bracket part are detachably connected, which can reduce the wearing of different sizes and shapes.
- the production cost of the brainwave detector ensures that the components in the detector are fully utilized.
- a head-mounted brain wave detector includes a sensor holder and an EEG analysis device, wherein the sensor holder is provided with a sensor module and a grounding module; the EEG analysis device is provided with an electroencephalogram processing module, an information processing module, and a data output module, the data output end of the brain wave processing module is connected to the data input end of the information processing module, and the first data output end of the information processing module is connected to the data input end of the data output module;
- the brain wave processing module of the EEG analysis device connects the sensor module and the grounding module disposed on the sensor bracket through a USB interface, so that the EEG analysis device is detachably connected to the sensor bracket.
- the EEG analysis device is connected to the sensor holder through a standard USB interface or an improved USB interface, thereby realizing a detachable connection between the EEG analysis device and the sensor holder.
- a standard USB interface or an improved USB interface thereby realizing a detachable connection between the EEG analysis device and the sensor holder.
- the sensor can not touch the forehead, just replace the sensor bracket of different sizes, and plug the EEG analysis device into different sensor brackets through the USB interface, which is convenient for users.
- the brainwave detector fails, usually the lower cost sensor and the bracket part have a short life and then the fault occurs, then only the bracket part can be replaced, and the EEG analysis device is retained, so that the components in the product are obtained. Fully effective use.
- FIG. 1 is a block diagram showing the structure of a head-mounted brain wave detector according to a first embodiment of the present application
- FIG. 2 is a schematic view showing the overall structure of a head-mounted brain wave detector according to a first embodiment of the present invention
- FIG. 3 is a schematic structural view of the head-mounted brain wave detector in the first embodiment of the present application
- It is a structural block diagram of a head-mounted brain wave detector in the second embodiment of the present application;
- FIG. 5 is a structural block diagram of a head-mounted brain wave detector according to a third embodiment of the present application.
- FIG. 6 is a structural block diagram of a head-mounted brain wave detector according to a fourth embodiment of the present application.
- FIG. 7 is a structural block diagram of a head-mounted brain wave detector according to a fifth embodiment of the present application.
- Fig. 8 is a block diagram showing the structure of a head-mounted brain wave detector according to a sixth embodiment of the present application.
- FIG. 1 is a block diagram showing the structure of a head-mounted brain wave detector according to a specific embodiment.
- the head-mounted brainwave detector includes a sensor holder (not shown in Fig. 1), an electroencephalogram analysis device 2, a USB interface 3, a sensor module 4, and a grounding module 5.
- the sensor module 4 and the grounding module 5 are connected to the EEG analysis device 2 via the USB interface 3.
- the sensor module 4 and the grounding module 5 are disposed on the sensor bracket.
- the sensor module 4 is used to collect and receive brain wave signals.
- the first sensor unit, the second sensor unit and the third sensor unit of the sensor module 4 the output end of the first sensor unit is connected to the EEG electrode of the brain wave processing module 201; the output end of the second sensor unit
- the REF electrode of the brain wave processing module 201 is connected; the output end of the sensor unit is connected to the ground electrode of the brain wave processing module 201 in the EEG analysis device 2.
- the ground electrode of the brain wave processing module 201 is also connected to the ground module 5.
- the first sensor unit, the second sensor unit, and the third sensor unit may be metal dry electrode sensors.
- the grounding module 5 is used for contact with the human body, and is in contact with the ground through the human body to form a ground loop of the detecting circuit.
- the sensor bracket is a U-shaped body, and the first sensor unit is located in the middle of the U-shaped body and is located Above the brain, the second sensor unit and the third sensor unit are respectively located at both ends of the u-shaped body, that is, the second sensor unit is disposed at one end of the U-shaped body, and the third sensor unit is disposed at the other end of the U-shaped body.
- the sensor bracket is set to a u-shaped shape, which is convenient for the user to wear, and at the same time, the position of the sensor unit is conveniently set to realize effective collection and detection of brain waves.
- the grounding module 5 is an ear clip type electrode. When worn, the ear clips grip the ears for grounding.
- the grounding module 5 can also use other electrodes as long as it is used to contact the human body to achieve grounding.
- the electroencephalogram analysis device 2 is provided with an electroencephalogram processing module 201, an information processing module 202, and a data output module 203.
- the data output end of the brain wave processing module 201 is connected to the data input end of the information processing module 202, and the information processing module 202 is A data output is coupled to the data input of the data output module 203.
- the brain wave processing module 202 is a medium TGAM1 chip of the ThinkGear-AM series of NeuroSky.
- the chip is equipped with a sensor at the forehead to detect brainwave signals and various brain states.
- the chip can filter external interference noise and measure nerve activity more effectively, and the measurement accuracy can reach 96% of the EEG for scientific research.
- the brainwave processing module 202 can also be selected from other brainwave processing chips.
- the information processing module 202 includes a digital filtering noise reduction unit and an analysis operation unit.
- the data input to the information processing module is processed by the digital filtering noise reduction unit and input to the analysis operation unit for calculation.
- the information processing module is an MCU, and mainly performs tasks such as power management, brain wave high and low indicator management, and buzzer management.
- the analysis operation unit is a single chip microcomputer or a DSP. When working, the TXD port in the brain wave processing module 202 (TGAM1 chip) outputs data, and the data is a relative reference data, and the range value is from 0 to 100.
- the data is filtered by a digital filtering noise reduction unit (usually a low-pass filter), and then input to the analysis unit, through a median algorithm and an averaging algorithm, and then a time integration method, so that every A period of time (for example, 3 seconds) is calculated as a value representing concentration and relaxation.
- a digital filtering noise reduction unit usually a low-pass filter
- the median algorithm and the principle of averaging are to continuously read the data in the TGAM1 chip. In the five data read continuously, the maximum and minimum values are removed, and then the middle three values are averaged. .
- the function of real-time integration is to take out more stable average data from the obtained data. If the average value obtained after integration is at a stable level, it indicates that the brain wave signal has been stabilized.
- the information processing module 202 sends the processed data to the data output module 203.
- the secondary processed data is output to the Bluetooth module via the 10-port via the RS232 communication standard, or to the 10 device via the TTL level.
- the data output module 203 can output data by using a wireless data transmission technology such as Bluetooth technology, radio frequency technology, zigbee technology or wifi technology.
- the data transmission module 203 is used for research and extension of a multi-person connection scheme by employing different data wireless transmission technologies.
- the sensor module 4 collects and receives the brain wave signal, and the brain wave signal is parsed and converted by the brain wave processing module 201, and then output to the information processing module 202, and the information processing module 202 processes the input data to be processed.
- the data is sent to the data output module 203, and the data is outputted to the external device such as a computer, a mobile phone or the like through the data output module 203.
- the second data output of the information processing module 202 is coupled to the configuration data input of the brainwave processing module 201.
- the brain wave processing module 201 can be initialized and configured by the information processing module 202.
- the head-mounted brain wave detector of the embodiment further includes a brain wave level indicator module 6, and the blinking change of the indicator color of the brain wave level indicator module 6 indicates different states of concentration and relaxation.
- the brain wave level indicator module 6 is connected to the information processing module 202 via a USB interface.
- the brain wave level indicator light module 6 is disposed on a sensor holder (not shown).
- the brain wave processing module 201 of the EEG analysis device 2 connects the sensor module 4 and the grounding module 5 disposed on the sensor bracket through the USB interface 3, so that the EEG analysis device 2 is detachably connected to the sensor bracket.
- the USB interface can be a standard USB interface or an improved USB interface.
- the USB is improved as follows: the plurality of pins in the USB interface are unplugged, and only three analog signal pins are reserved for brain wave analog signal transmission. After the pins are unplugged, the three analog signal pins are pulled out from each other. The distance left after the stitch is dropped. For example, for a USB port with 12 pins set itself, sort the pins one by one.
- the pins 2, 4 and 6 can be pulled out, so that the spatial distance between the pins used for signal transmission is increased, that is, the signal transmission of brain waves At the same time, the safety distance between the signals increases, so that the signals do not affect each other, and the accuracy of the signal during transmission is ensured.
- the remaining three analog signal pins are pulled out from each other. The distance left after the stitch is removed can be. According to the experimental test, it is preferable to retain the first, third, and fifth stitches, and when the improved USB interface is used for signal transmission, the signal is less interfered.
- the detachable head-mounted brain wave detector of the present embodiment includes a sensor holder 1 and an electroencephalogram analysis device 2.
- the sensor module 4 and the grounding module are disposed on the sensor holder 1.
- the sensor holder 1 is a U-shaped body, and the U-shaped body has an accommodating box at one end thereof, and the brain box processing module, the information processing module and the data output module are disposed in the accommodating box body, and the accommodating box body is formed.
- the brain wave processing module of the EEG analysis device 2 connects the sensor module and the grounding module provided on the sensor holder 1 through a standard USB interface, so that the EEG analysis device 2 is detachably connected to the sensor holder 1. among them,
- the sensor holder 1 can be made of a hard plastic or a soft band to solve the problem of different head types.
- the electroencephalogram analysis device 2 is further provided with a buzzer (not shown) and a power indicator light 21.
- the buzzer is used for the switch prompt, the correct or not prompt, and the low battery prompt.
- the power indicator 21 is used for the power-on prompt, the Bluetooth pairing connection prompt, and the low battery prompt.
- the sensor holder 1 includes a U-shaped body, the sensor module 4 is located at an intermediate position of the U-shaped body, and the adjustable ends 13 are fixed to the free ends of the U-shaped body.
- the adjustable strap 13 can be an elastic headband, and can be an adjustable length strap with a Velcro at the end, which is mainly used to fix the head-mounted brainwave detector to the user's head according to different head shapes.
- the ear clip electrode 12 provided on the sensor holder 1 is also illustrated, and the ear is clamped by the ear clip type electrode 12 to achieve grounding.
- the above-mentioned head-mounted brain wave detector can be disposed in a hair band or a hat.
- the daily wear-type accessories such as soft hair bands or hats
- the user's psychological resistance can be alleviated.
- users can choose different headwear accessories according to different occasions, such as selecting yoga belt accessories in the yoga scene, and selecting sports caps and other accessories in the golf field.
- the EEG analysis device and the sensor holder are detachably connected through the USB interface, thereby producing products of different sizes and different shapes and structures, and the manufacturing process is low.
- the same EEG analysis device can be used with different sensor brackets, that is, the user only needs to select a sensor bracket of a suitable size head type, and inserts the EEG analysis device for use, which is convenient for the user.
- the specific embodiment differs from the first embodiment in that: the specific embodiment adds a USB charging unit based on the first embodiment, that is, the head-mounted brain wave detector further includes a power detecting unit, a battery unit, and a USB interface. unit.
- FIG. 4 is a block diagram showing the structure of a head-mounted brain wave detector according to a specific embodiment.
- the head-mounted brain wave detector includes a sensor holder (not shown in FIG. 4), an electroencephalogram analysis device 2, a USB interface 3, a sensor module 4, a grounding module 5, a power detecting unit 71, a battery unit 72, and a USB interface unit 73.
- the sensor module 4 and the grounding module 5 are connected to the electroencephalogram analyzing device 2 via the USB interface 3.
- the newly added power detecting unit 71, the battery unit 72, and the USB interface unit 73 can be placed in the housing box of the EEG analysis device 2 together with the brain wave processing module 201, the information processing module 202, and the data output module 203.
- USB charging unit In the USB charging unit, one end of the power detecting unit 71 is connected to the information processing module 202, and the other end is connected to the output end of the battery unit 72. The power detecting unit 71 collects information on the power of the battery unit 72 in real time, and collects the collected information. Send to the information processing module 202.
- the USB interface unit 73 is connected to the input terminal of the battery unit 72, and the external power source can be connected to the battery unit 72 via the USB interface unit 73.
- a voltage stabilizing unit is further disposed between the USB interface unit 73 and the battery unit 72, and the voltage of the external power source is introduced into the voltage stabilizing unit through the USB interface unit 73, and the voltage is output to the battery unit 72 after being filtered by the voltage stabilizing unit.
- the battery unit 72 is charged.
- the head-mounted brain wave detector has a USB charging unit in addition to the detachable connection between the EEG analyzer and the sensor holder, as in the first embodiment, and the USB charging unit is included in the brainwave detector.
- the line connected to the USB interface on the external power supply, charges the brainwave detector.
- the battery capacity and endurance of the brain wave detector in the present embodiment are significantly improved compared with the conventional brain wave detector, which makes it possible to miniaturize and port the brain wave detector, and this charging method Strong expansion ability and fast charging speed.
- the brainwave detector that is powered by an external power supply or a separate power adapter, it is convenient for the user to operate and use, improving the user experience.
- Embodiment 3 is convenient for the user to operate and use, improving the user experience.
- the present embodiment differs from the first embodiment in that: in the specific embodiment, a low voltage detecting unit is added to the first embodiment.
- FIG. 5 it is a structural block diagram of a head-mounted brain wave detector in the specific embodiment.
- the head-mounted brainwave detector includes a sensor holder (not shown in Fig. 5), an electroencephalogram analysis device 2, a USB interface 3, a sensor module 4, a grounding module 5, and a low voltage detecting unit 8.
- the sensor module 4 and the grounding module 5 are connected to the electroencephalogram analyzing device 2 via the USB interface 3.
- the newly added low voltage detecting unit 8 can be placed in the housing box of the EEG analysis device 2 together with the brain wave processing module 201, the information processing module 202, and the data output module 203.
- the connection between the sensor bracket, the EEG analysis device 2, the USB interface 3, the sensor module 4, and the grounding module 5 is the same as that in the first embodiment, and the description is not repeated here.
- Increased low voltage detection unit The low voltage detecting unit 8 is connected to the information processing module 202, and the low voltage detecting unit 8 transmits the power supply voltage value in the head mounted brain wave detector system to the information processing unit in real time, and the information processing module according to the input voltage The value is compared with the preset voltage value. When the input voltage value is less than the system preset voltage value, the information processing module makes a corresponding system prompt. Preferably, it may be set to control the buzzer buzzer or control the turn-on signal to make a prompt.
- the head-mounted brain wave detector of the present embodiment further includes a low-voltage detection unit in the brainwave detector.
- a low-voltage detection unit in the brainwave detector.
- the specific embodiment differs from the first embodiment in that: in the specific embodiment, a lamp control unit is added to the first embodiment.
- FIG. 6 is a block diagram showing the structure of a head-mounted brain wave detector according to a specific embodiment.
- the head-mounted brainwave detector includes a sensor holder (not shown in Fig. 6), an electroencephalogram analysis device 2, a USB interface 3, a sensor module 4, a grounding module 5, and a light control unit 9.
- the sensor module 4 and the grounding module 5 are connected to the electroencephalogram analyzing device 2 via the USB interface 3.
- the new light control unit 9 can be placed in the housing box of the EEG analysis device 2 together with the brain wave processing module 201, the information processing module 202, and the data output module 203.
- Light control unit 9 The signal input end of the light control unit 9 is connected to the signal output end of the information processing module 202. When the value of the data processed by the information processing module 202 reaches a predetermined value, the information processing module 202 outputs a control signal to the light control unit 9, and the light control unit 9 Turn on the corresponding status indicator. When working, when the brainwave detector is normally turned on, the light control unit 9 will have relevant prompts.
- the light control unit 9 includes a first status indicator and a second status indicator.
- the brainwave detector measures the correct brain wave signal, if the value representing the attention reaches 72, the information The processing module outputs a first control signal to control the first status indicator light (for example, a red light) to be in a highlighted state; if the value representing the dispersion force reaches 80, the information processing module outputs a second control signal control The second status indicator (eg, blue light) is highlighted.
- the lamp control unit 9 will not have an associated reaction.
- the type of the brain wave signal can be identified by the state of the indicator lights of different colors in the lamp control unit, thereby improving the user experience.
- the head-mounted brain wave detector of the present embodiment further includes a lamp control unit in the brainwave detector.
- a corresponding intuitive system prompt is generated under the corresponding brain wave signal to help the user identify the detected brain wave signal, and provide an effective visual prompt function for the user, thereby improving the user experience.
- the present embodiment differs from the first embodiment in that: in the specific embodiment, an audio presentation unit is added to the first embodiment.
- FIG. 7 is a block diagram showing the structure of a head-mounted brain wave detector in the specific embodiment.
- the head-mounted brainwave detector includes a sensor holder (not shown in Fig. 7), an electroencephalogram analysis device 2, a USB interface 3, a sensor module 4, a grounding module 5, and an audible prompt unit 10.
- the sensor module 4 and the ground module 5 are connected to the electroencephalogram analyzing device 2 via the USB interface 3.
- the newly added voice prompting unit 10 can be placed in the housing box of the EEG analysis device 2 together with the brain wave processing module 201, the information processing module 202, and the data output module 203.
- the connection between the sensor bracket, the EEG analysis device 2, the USB interface 3, the sensor module 4, and the grounding module 5 is the same as that in the first embodiment, and the description is not repeated here.
- the sound prompt unit 10. The signal input end of the sound prompting unit 10 is connected to the signal output end of the information processing module 202. When the value of the data processed by the information processing module 202 reaches a predetermined value, the information processing module 202 outputs a control signal to the sound prompting unit 10, and the sound prompting unit 10 gives the corresponding sound indication.
- the voice prompting unit 10 includes a buzzer.
- the electroencephalogram detector in addition to the detachable connection between the EEG analysis device and the sensor holder, the electroencephalogram detector further includes an audible prompt unit. Corresponding sound signals are generated under the corresponding brain wave signals to provide users with an effective response prompt function, which improves the user experience.
- the specific embodiment is different from the first embodiment in that: the specific embodiment further defines that the data output module includes an RS232 interface or a Bluetooth interface, and the processed data of the information processing module is sent to the S232 interface or the Bluetooth interface. External receiving platform.
- FIG. 8 is a block diagram showing the configuration of a head-mounted brain wave detector according to a specific embodiment.
- the head-mounted brain wave detector includes a sensor holder (not shown in FIG. 8), an electroencephalogram analysis device 2, a USB interface 3, and a sensor.
- Module 4 grounding module 5.
- the sensor module 4 and the grounding module 5 are connected to the electroencephalogram analyzing device 2 via the USB interface 3.
- the brain wave processing module 201, the information processing module 202, and the data output module 203 are placed in the housing box of the EEG analysis device 2.
- the data output module 203 includes an RS232 interface or a Bluetooth interface
- the processed data of the information processing module 202 is sent to an external receiving platform through an RS232 interface or a Bluetooth interface.
- the receiving platform includes: PC platform, Android platform or IOS (iPhone OS, an operating system developed by Apple Inc. for its smartphone) platform.
- the secondary processed data is output to the PC platform through the RS232 communication standard, or output to the Android platform or the PC platform through the Bluetooth interface, and can also be processed through the Bluetooth interface through a special IOS encryption and decryption unit.
- the IOS encryption and decryption unit is Apple's encryption chip 21640.
- the data output module 203 includes an RS232 interface or a Bluetooth interface, so that the head-mounted brain wave detector of the present embodiment is the same as the first embodiment.
- the radio wave detector can transmit brainwave data to a computer or portable device such as an Android platform or an IOS platform through Bluetooth communication technology or RS232 serial port technology, thereby realizing the extensive development and application of brainwave data and improving the user experience.
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