CN206934102U - Low-power consumption eeg signal acquisition and radio transmission apparatus is miniaturized - Google Patents
Low-power consumption eeg signal acquisition and radio transmission apparatus is miniaturized Download PDFInfo
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- CN206934102U CN206934102U CN201720026202.2U CN201720026202U CN206934102U CN 206934102 U CN206934102 U CN 206934102U CN 201720026202 U CN201720026202 U CN 201720026202U CN 206934102 U CN206934102 U CN 206934102U
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Abstract
The utility model discloses one kind miniaturization low-power consumption eeg signal acquisition and radio transmission apparatus.The equipment includes electroencephalogramsignal signal acquisition module, storage display module and wireless charging module；Electroencephalogramsignal signal acquisition module gathers EEG signals by needle electrode unit, the EEG signals are sent into signal conditioning circuit unit to be amplified and filtering process, and the signal after signal conditioning circuit cell processing is exported to storage display module by the first DA14580 Bluetooth wireless transmission units；Store the signal that display module receives the output of the first DA14580 Bluetooth wireless transmissions unit by the 2nd DA14580 Bluetooth wireless transmissions unit, by signal storage to the first SD card unit, and digital filtering is carried out to the signal by STM32F103RCT6 microprocessor units, so that the signal after digital filtering is stored to the second SD card unit, shown finally by LCD display unit.
Description
Technical field
The utility model is related to eeg signal acquisition technology, and in particular to one kind miniaturization low-power consumption eeg signal acquisition with
Radio transmission apparatus.
Background technology
EEG signals EEG (Electroencephalogram) collection and research obtains brain information, treatment for the mankind
Brain diseases, help the research of the every field such as daily life of physical disabilities to provide foundation and basis, and to clinical medicine,
All kinds of subjects such as Cognitive Neuroscience, brain science and informatics also have profound significance and influence.Collection and research animal brain
Electric signal is that people carry out the conventional means of brain science research, therefore, is directed to animal electroencephalogramsignal signal collection equipment all the time
And the focus of people's research.For EEG signals main frequency in 0.5~100Hz, signal amplitude scope is 5~300 μ V.Due to μ V
Level EEG signals are quite faint, it is easy to are flooded by mV levels external interference and internal noise.Therefore, feeble computer signals gather
During to ensure effectively to suppress external interference under the premise of sufficiently high signal gain, and to brain wave acquisition equipment volume,
Power consumption and transmission means etc. also have very high requirement.
As research of the mankind to EEG signals is progressively deepened, the instrument and meter of experimental animal EEG signals is able to record
It is more and more.The single neuron activity of Iyad Obeid et al. macaques under record waking state in 2004.Biological brain at present
Electric wired mode measurement accuracy is of a relatively high, but due to limiting the range of movement of animal, may be led in measurement process
Situations such as line winds or baited by animal.Wireless mode can make animal activity scope become big, but collector receives measurement essence
The restriction of the factors such as degree, bandwidth, volume, weight and battery-powered time.At present, external eeg signal acquisition technology is suitable
Maturation, more complete eeg collection systems of set are produced.Such as EGI companies of the U.S., Neuroscan companies, German Brain
The eeg collection system precision of the productions such as Products companies can reach 24nV, and common-mode rejection ratio is up to 110dB.But it
Price it is very expensive, all in 300,000 RMB or so, and volume and power consumption are all bigger.In order to ensure the high property of system
Power consumption and volume are reduced on the premise of energy as much as possible, for many years each research team or personal all in progress unremitting effort.
Such as Hoof team devised signal acquisition chip in 2006, when single-ended 3V powers, power consumption is about 300 μ W.2011 should
Team devises a low-voltage applied in sign signal acquisition, the continuous time Sigma-Delta ADC of low-power consumption, core
Piece is powered with 1.4V, and power consumption is only 13.3 μ W, but the not yet function of integrated wireless transmission.
Utility model content
It has been given below on brief overview of the present utility model, to provide on some sides of the present utility model
The basic comprehension in face.It should be appreciated that this general introduction is not on exhaustive general introduction of the present utility model.It is not intended to really
Fixed crucial or pith of the present utility model, nor intended limitation the scope of the utility model.Its purpose is only with letter
The form of change provides some concepts, in this, as the preamble in greater detail discussed later.
In consideration of it, the utility model provides a kind of miniaturization low-power consumption eeg signal acquisition and radio transmission apparatus, with
At least solves the problems, such as the existing limitation subject scope of activities of existing eeg signal acquisition technology, volume is big and power consumption is big.
According to one side of the present utility model, there is provided one kind miniaturization low-power consumption eeg signal acquisition is with being wirelessly transferred
Equipment, miniaturization low-power consumption eeg signal acquisition include electroencephalogramsignal signal acquisition module, storage display module with radio transmission apparatus
And wireless charging module, wireless charging module are used to carry out wireless charging to electroencephalogramsignal signal acquisition module and storage display module；
Electroencephalogramsignal signal acquisition module includes needle electrode unit, signal conditioning circuit unit, the first DA14580 Bluetooth wireless transmission units
With the first power circuit unit；Storing display module includes STM32F103RCT6 microprocessor units, the first SD card unit, the
Two SD card units, the 2nd DA14580 Bluetooth wireless transmissions unit, LCD display unit and second source circuit unit；Brain telecommunications
Number acquisition module is used to gather EEG signals by needle electrode unit, and the EEG signals are sent into signal conditioning circuit unit
Be amplified and filtering process, and by the signal after signal conditioning circuit cell processing by the first DA14580 bluetooths without
Line transmission unit is exported to storage display module；Wherein, the first power circuit unit is used for signal conditioning circuit unit and the
One DA14580 Bluetooth wireless transmissions unit is powered；Storage display module is used to pass through the 2nd DA14580 Bluetooth wireless transmission units
The signal of the first DA14580 Bluetooth wireless transmissions unit output is received, the signal is stored to the first SD card unit, and is passed through
STM32F103RCT6 microprocessor units carry out digital filtering to the signal, and the signal storage after digital filtering is arrived
Second SD card unit, is shown by LCD display unit, wherein, second source circuit unit be used for pair
STM32F103RCT6 microprocessor units, the first SD card unit, the second SD card unit, the 2nd DA14580 Bluetooth wireless transmission lists
Member and the power supply of LCD display unit.
Further, the knot of the first DA14580 Bluetooth wireless transmissions unit and the 2nd DA14580 Bluetooth wireless transmission units
Structure is identical；Wherein, the first DA14580 Bluetooth wireless transmissions unit using DA14580 chips as core processing device,
DA14580 integrated chips have ARM M0 kernels, A/D modular converters and bluetooth wireless transmission module, wherein, DA14580 chips
22 pin receive the EEG signals crossed from signal conditioning circuit cell processing, by after A/D by the bluetooth that itself is integrated without
Line transport module is transmitted to storage display module；35 pin of DA14580 chips are via the second inductance L2 connection 2.4G Bluetooth antennas
And first electric capacity one end, the first electric capacity the other end ground connection；The one end of 35 pin of DA14580 chips also with the second electric capacity is connected
Connect, the other end ground connection of the second electric capacity；The external 32.768KHz of 11 pin and 12 pin of DA14580 chips crystal oscillator come for
The real-time clock of DA14580 chip internals provides clock frequency；The external 16MHz of 29 pin and 30 pin of DA14580 chips is brilliant at a high speed
Shake and provide clock for DA14580 chips；17 pin of DA14580 chips are the reset pins of the chip, and reset pin connects
Reset key, reset key are connected to the both ends of the 6th electric capacity, and 14 pin of DA14580 chips connect one end of the 6th electric capacity, the
The other end of six electric capacity is grounded after connecting the 6th resistance；14 pin of DA14580 chips are also connected with one end and the 8th of the 7th resistance
One end of resistance, 27 pin of the other end connection DA14580 chips of the 7th resistance, and the other end of the 8th resistance connects
28 pin of DA14580 chips；It is connected to after first inductance and the series connection of the 7th electric capacity between 21 pin of DA14580 chips and ground；
7 pin of the 3 pin connection USB_8P chips of DA14580 chips, 6 pin of the 26 pin connection USB_8P chips of DA14580 chips,
5 pin of the 6 pin connection USB_8P chips of DA14580 chips, 4 pin of the 25 pin connection USB_8P chips of DA14580 chips,
2 pin of the 14 pin connection USB_8P chips of DA14580 chips；14 pin of DA14580 chips and 15 pin connect the one of the 8th electric capacity
16 pin of end and one end of the 9th electric capacity, the other end of the 8th electric capacity and the other end connection DA14580 chips of the 9th electric capacity are simultaneously
And it is grounded.
Further, signal conditioning circuit unit includes electrode condition detection circuit, passive filter circuit, one-level amplification electricity
Road, second amplifying circuit, low-pass filter circuit, drive circuit, suppression Hz noise circuit and level lifting circuit；Electrode condition
Detection of the circuit for the connection status to needle electrode unit is detected, electrode condition detection circuit includes active low-pass filter
Device, the high fdrequency component in the EEG signals collected for filtering out needle electrode unit；Passive filter circuit, one-level amplification electricity
Road, second amplifying circuit, low-pass filter circuit are respectively used to carry out EEG signals passive filtering, one-level amplification, two level amplification
And low-pass filtering treatment；Drive circuit and suppress Hz noise circuit be used to carrying out the EEG signals Hz noise suppress and
Denoising；Level lifting circuit is used to enter line level lifting to the signal for being sent to the first DA14580 Bluetooth wireless transmission units, is
Effective signal is set to be all introduced into the internal analog-digital converter of DA14580 chips (U1).
Further, one-level amplifying circuit realizes 1000 times of enlargement ratio, its common mode inhibition using INA102 chips
Than more than or equal to 90dB, input impedance is up to 1010Ω；Wherein, 4 pin of INA102 chips connect 7 pin, and 5 pin connect 6 pin；
14 pin and 15 pin of INA102 chips receive the EEG signals treated by passive filter circuit as input；INA102
12 pin of chip connect+15V DC voltages, and 9 pin connect -15V DC voltages, 10 pin ground connection；The 11 pin connection the 3rd of INA102 chips
One end of electric capacity；The other end of 3rd electric capacity is exported to second amplifying circuit, and connect one end of first resistor as output end
With one end of the 4th electric capacity；The other end of the other end of first resistor and the 4th electric capacity is grounded；One end and the tenth of tenth electric capacity
It is grounded after one end connection of one electric capacity, the other end connection positive voltage of the tenth electric capacity, and the other end of the 11st electric capacity connects
Connect negative supply voltage.
Further, second amplifying circuit realizes 3 times of enlargement ratios using OPA369 chips；Wherein, the 1 of OPA369 chips
Input is used as after pin connection second resistance, receives the treated signal of one-level amplifying circuit；The 2 pin connection of OPA369 chips-
VCC, 5 pin connection+VCC；It is grounded after the 3 pin connection 3rd resistor of OPA369 chips, 4 pin are used as output after connecting the 4th resistance
End, export to low-pass filter circuit and carry out follow-up processing；5th electric capacity and the 5th resistor coupled in parallel in OPA369 chips 3 pin with
Between 4 pin；One end of 12nd electric capacity is grounded after being connected with one end of the 13rd electric capacity, and the other end connection of the 12nd electric capacity is just
Supply voltage, and the other end of the 13rd electric capacity connection negative supply voltage.
Further, wireless charging module uses magnetic resonance type wireless charging mode to electroencephalogramsignal signal acquisition module and storage
Display module is powered, and uses the power management module using BQ25570 chips as core to be used as receiving terminal.
Further, wireless charging module includes magnetic resonance radiating circuit and transmitting coil；The external confession of wireless charging module
Power supply, high-frequency alternating current is exported to transmitting coil by magnetic resonance radiating circuit, with transmitting coil and first power supply
Formed between receiving coil between receiving coil in circuit unit and in transmitting coil and second source circuit unit
Magnetic field, to the power management module and second source circuit in the first power circuit unit using BQ25570 chips as core
Power management module in unit using BQ25570 chips as core is charged.
Compared with existing electroencephalogramsignal signal collection equipment, the utility model has the characteristics of the following aspects.(1) whole
In individual eeg collection system, the size of brain wave acquisition module final products is about 25mm × 25mm, and weight is 10g or so.It is miniature
The brain wave acquisition module of change can mitigate the compressing to being tested animal head significantly, make more accurate to the brain wave acquisition for being tested animal
Really.Storage display module and wireless charging module are also all designed using the device of small size, and overall volume also all compares
It is smaller, there is good portability.So as to which whole system can realize that small size is portable.(2) selected in brain wave acquisition module
The device of the super low-power consumptions such as DA14580, INA102, OPA369, reduces the overall power of brain wave acquisition module, extends brain
The working time of electric acquisition module, electroencephalogramsignal signal acquisition module once charge can operating time up to 15 days or so, contribute to quilt
Try animal and carry out prolonged brain wave acquisition.Storage display module employ ultra low power devices DA14580 as bluetooth module,
MiniSTM32F103 reduces the power consumption for storing display module to a certain degree as processor.Whole brain wave acquisition equipment has
The characteristics of low-power consumption.(3) wireless blue tooth is carried out by DA14580 chips between electroencephalogramsignal signal acquisition module and storage display module
Communication, DA14580 have the characteristics of high small volume, integrated level, small power consumption, can not only make brain by the application to DA14580
Electrical signal collection module and the volume of storage display module reduce, and between electroencephalogramsignal signal acquisition module and storage display module
The transmission of row information can be entered in 10m or so distance.(4) wireless charging module gives electroencephalogramsignal signal acquisition module and storage simultaneously
Display module is powered by wireless charging mode, greatly reduces the interference of the industrial frequency noise of system, and can be to quilt
Try animal and carry out remote prolonged eeg signal acquisition.
Miniaturization low-power consumption eeg signal acquisition and radio transmission apparatus of the present utility model, it is possible to increase EEG signals are adopted
The precision and antijamming capability of collecting system, power frequency is reduced using the device of high s/n ratio, and by the way of being wirelessly transferred
The introducing of noise.In terms of the volume and power consumption of brain wave acquisition equipment, from super low-power consumption, the high-accuracy device of extra small encapsulation.
The said equipment of the present utility model can reduce the volume and power consumption of system, ensure system reliability service, from DA14580 conducts
Core processing device.DA14580 has the advantages that small volume, integrated level are high, low in energy consumption, whole system is more minimized, be low
Power consumption., can be significantly simple and DA14580 is integrated with ARM M0 kernels, A/D modular converters, bluetooth wireless transmission module etc.
The complexity of system is changed.
Miniaturization low-power consumption eeg signal acquisition of the present utility model has miniaturization, low-power consumption with radio transmission apparatus
The features such as change, wireless penetration.
Brief description of the drawings
The utility model can by reference to being better understood below in association with the description given by accompanying drawing, wherein
Same or analogous reference has been used in all of the figs to represent same or similar part.The accompanying drawing is together with
The detailed description in face includes in this manual and forms the part of this specification together, and for further illustrating
Bright preferred embodiment of the present utility model and explanation principle and advantage of the present utility model.In the accompanying drawings：
Figure 1A is an example of miniaturization low-power consumption eeg signal acquisition and radio transmission apparatus of the present utility model
Overall system architecture block diagram；
Figure 1B is DA14580 circuit theory diagrams of the present utility model；
Fig. 2A is a kind of schematic diagram of possible structure of signal conditioning circuit unit；
Fig. 2 B are the structural representations of one-level amplifying circuit；
Fig. 2 C are the structural representations of second amplifying circuit；
Fig. 3 is wireless charging module structural representation.
It will be appreciated by those skilled in the art that element in accompanying drawing is just for the sake of showing for the sake of simple and clear,
And be not necessarily drawn to scale.For example, the size of some elements may be exaggerated relative to other elements in accompanying drawing, with
Just it is favorably improved the understanding to the utility model embodiment.
Embodiment
One exemplary embodiment of the present utility model is described hereinafter in connection with accompanying drawing.Rise for clarity and conciseness
See, do not describe all features of actual embodiment in the description.It should be understood, however, that developing any this reality
It must be made during embodiment much specific to the decision of embodiment, to realize the objectives of developer, example
Such as, those restrictive conditions related to system and business are met, and these restrictive conditions may be with embodiment not
Change together.In addition, it will also be appreciated that although development is likely to be extremely complex and time-consuming, to having benefited from
For those skilled in the art of present disclosure, this development is only routine task.
Herein, it is also necessary to which explanation is a bit, in order to avoid having obscured the utility model because of unnecessary details, attached
It illustrate only and according to the closely related apparatus structure of scheme of the present utility model and/or processing step, and eliminate in figure
The little other details with the utility model relation.
The utility model provides a kind of miniaturization low-power consumption eeg signal acquisition and radio transmission apparatus, and low work(is miniaturized
Consuming eeg signal acquisition and radio transmission apparatus includes electroencephalogramsignal signal acquisition module, storage display module and wireless charging module,
Wireless charging module is used to carry out wireless charging to electroencephalogramsignal signal acquisition module and storage display module；Electroencephalogramsignal signal acquisition module
Including needle electrode unit, signal conditioning circuit unit, the first DA14580 Bluetooth wireless transmissions unit and the first power circuit list
Member；Storing display module includes STM32F103RCT6 microprocessor units, SD card unit, the 2nd DA14580 Bluetooth wireless transmissions
Unit, LCD display unit and second source circuit unit；Electroencephalogramsignal signal acquisition module is used to gather by needle electrode unit
EEG signals, the EEG signals are sent to signal conditioning circuit unit and are amplified and filtering process, and signal will be passed through and adjusted
Signal after reason circuit unit processing is exported to storage display module by the first DA14580 Bluetooth wireless transmission units；Wherein,
First power circuit unit is used to supply the signal conditioning circuit unit and the first DA14580 Bluetooth wireless transmissions unit
Electricity.Display module is stored to be used to receive the first DA14580 Bluetooth wireless transmissions by the 2nd DA14580 Bluetooth wireless transmissions unit
The signal of unit output, the signal is stored to the first SD card unit, and by STM32F103RCT6 microprocessor units to this
Signal carries out digital filtering, and the signal after digital filtering is stored to the second SD card unit, passes through LCD display unit
Show, wherein, second source circuit unit is used for STM32F103RCT6 microprocessor units, the first SD card unit, the
Two SD card units, the 2nd DA14580 Bluetooth wireless transmissions unit and the power supply of LCD display unit.
Miniaturization low-power consumption eeg signal acquisition and radio transmission apparatus of the present utility model are described with reference to Figure 1A
A kind of exemplary construction.
As shown in Figure 1A, low-power consumption eeg signal acquisition and radio transmission apparatus is miniaturized includes electroencephalogramsignal signal acquisition module
1st, display module 2 and wireless charging module 3 are stored, wireless charging module 3 is used to show electroencephalogramsignal signal acquisition module 1 and storage
Module 2 carries out wireless charging.
It is blue that electroencephalogramsignal signal acquisition module 1 includes needle electrode unit 11, signal conditioning circuit unit 12, the first DA14580
The power circuit unit 14 of tooth wireless transmission unit 13 and first.First power circuit unit 14 is used to give signal conditioning circuit unit
12nd, the first DA14580 Bluetooth wireless transmissions unit 13 is powered.
Storing display module 2 includes STM32F103RCT6 microprocessor units 21, the first SD card unit 22, the second SD card
Unit 23, the 2nd DA14580 Bluetooth wireless transmissions unit 24, LCD display unit 25 and second source circuit unit 26.
Electroencephalogramsignal signal acquisition module 1 is used to gather EEG signals by needle electrode unit 11, and the EEG signals are sent
It is amplified to signal conditioning circuit unit 12 and filtering process, and by the signal after signal conditioning circuit unit 12 is handled
Pass through the first DA14580 Bluetooth wireless transmissions unit 13 output to storage display module 2.
Display module 2 is stored to be used to receive the first DA14580 bluetooths by the 2nd DA14580 Bluetooth wireless transmissions unit 24
The signal that wireless transmission unit 13 exports, the signal is stored to the first SD card unit 22, and pass through the micro- places of STM32F103RCT6
Manage device unit 21 and digital filtering is carried out to the signal, the signal after digital filtering is stored to the second SD card 23, passed through
LCD display unit 25 shows, wherein, second source circuit unit 26 is used for STM32F103RCT6 microprocessor lists
First 21, first SD card unit 22, the second SD card 23, the 2nd DA14580 Bluetooth wireless transmissions unit 24 and LCD display unit 25
Power supply.
According to a kind of implementation, as shown in Figure 1B, the first DA14580 Bluetooth wireless transmissions unit 13 and second
The structure of DA14580 Bluetooth wireless transmissions unit 24 is identical；Wherein, the first DA14580 Bluetooth wireless transmissions unit 13 uses
For DA14580 chips U1 as core processing device, DA14580 chips U1 is integrated with ARM Cortex M0 kernels, A/D moduluss of conversion
Block and bluetooth wireless transmission module, wherein, DA14580 chips U1 22 pin receive what is crossed from signal conditioning circuit cell processing
EEG signals, transmitted by the bluetooth wireless transmission module integrated after A/D by itself to storage display module；DA14580
Chip U1 35 pin connect 2.4G Bluetooth antennas A1 and the first electric capacity C83 one end via the second inductance L2 (being, for example, 2.2 μ H),
First electric capacity C83 (being, for example, 10pF) other end ground connection；DA14580 chips U1 35 pin also with the second electric capacity C89 (be, for example,
One end 10pF) is connected, the second electric capacity C89 other end ground connection；External one of DA14580 chips U1 11 pin and 12 pin
32.768KHz crystal oscillator CRY2 to provide clock frequency for the real-time clock inside DA14580 chips U1；DA14580 chips U1
29 pin and the external 16MHz high speed crystal oscillators CRY1 of 30 pin to provide clock for DA14580 chips U1；The 17 of DA14580 chips U1
Pin is the reset pin of the chip, and reset pin connection reset key, reset key are connected to the 6th electric capacity C4 (for example, 10
μ F) both ends, DA14580 chips U1 14 pin connect the 6th electric capacity C4 one end, the 6th electric capacity C4 other end connection the 6th
Resistance R14 (being, for example, 4.7k Ω) is grounded afterwards；DA14580 chips U1 14 pin are also connected with the 7th resistance R15 (being, for example, 10k Ω)
One end and the 8th resistance R16 (be, for example, 10k Ω) one end, the 7th resistance R15 other end connection DA14580 chips U1's
27 pin, and the 8th resistance R16 other end connection DA14580 chips U1 28 pin；First inductance L1 (be, for example, 2.2 μ H) and the
It is connected to after seven electric capacity C14 series connection between DA14580 chips U1 21 pin and ground.In addition, DA14580 chips U1 3 pin connection
USB_8P chips U5 7 pin, DA14580 chips U1 26 pin connection USB_8P chips U5 6 pin, DA14580 chips U1 6 pin
Connect USB_8P chips U5 5 pin, DA14580 chips U1 25 pin connection USB_8P chips U5 4 pin, DA14580 chips U1
14 pin connection USB_8P chips U5 2 pin, in addition, DA14580 chips U1 14 pin and 15 pin connect the one of the 8th electric capacity C16
End and the 9th electric capacity C17 one end, the 8th electric capacity C16 other end and the 9th electric capacity C17 other end connection DA14580 chips
U1 16 pin and it is grounded.
In fig. ib, P00 ends, P01 ends, P02 ends, P03 ends, P04 ends, P05 ends, P21 ends, P06 ends and P07 ends connect respectively
Connect DA14580 chips U1 1 pin, 2 pin, 3 pin, 4 pin, 6 pin, 7 pin, 8 pin, 9 pin and 10 pin；P22 ends, V_BLE ends, RST ends,
P23 ends and P24 ends connect DA14580 chips U1 13 pin, 14 pin, 17 pin, 18 pin and 20 pin respectively；P10 ends, P11 ends,
SWDIO_B ends, SWDLK_B ends, P12 ends and P13 ends connect DA14580 chips U1 22 pin, 24 pin, 25 pin, 26 pin, 27 respectively
Pin and 28 pin；P20 ends, P29 ends, VPP ends, P28 ends, P27 ends, P26 ends and P25 ends connect the 40 of DA14580 chips U1 respectively
Pin, 39 pin, 38 pin, 37 pin, 36 pin, 33 pin and 32 pin.
Wherein, V_BLE represents power supply, and U5 is SWD on-line debugging modes, is additionally operable to download program.In figure by the electric capacity of many places
Mark " 105 " be to represent that the capacitance is, for example, 10 × 105pF.It should be noted that the parameters of citing are only used above
In example, and it is not limited to lifted concrete numerical value or other reasonable values.
According to a kind of implementation, as shown in Figure 2 A, signal conditioning circuit unit 12 for example detects electricity including electrode condition
Road 12-1, passive filter circuit 12-2, one-level amplifying circuit 12-3, second amplifying circuit 12-4, low-pass filter circuit 12-5, drive
Dynamic circuit 12-6, suppress Hz noise circuit 12-7 and level lifting circuit 12-8.
Electrode condition detection circuit 12-1 is used for the detection to the connection status of needle electrode unit 11, if electrode contacts
Well, useful signal is collected, input can be less than the threshold value of setting, it is believed that electrode connection status is normal, can directly enter line number
According to collection.When input amplitude be more than setting threshold value, electrode delamination can be determined as, to be resurveyed, and pin can be filtered out
High fdrequency component in the EEG signals that shape electrode unit 11 collects.Passive filter circuit 12-2, one-level amplifying circuit 12-3, two
Level amplifying circuit 12-4, low-pass filter circuit 12-5 are respectively used to put EEG signals progress passive filtering, one-level amplification, two level
Big and low-pass filtering treatment.Drive circuit 12-6 and suppression Hz noise circuit 12-7 are used to carry out power frequency to the EEG signals
AF panel and denoising.Level lifting circuit 12-8 is used to enter line level lifting to the EEG signals after acquisition process, to make
Effective signal can fully enter the first DA14580 Bluetooth wireless transmissions unit 13.And in order to prevent late-class circuit from driving
Scarce capacity, EEG signals add voltage follower after level lifting, to improve the carrying load ability of late-class circuit.
According to a kind of implementation, as shown in Figure 2 B, one-level amplifying circuit 12-3 realizes 1000 using INA102 chips G1
Times enlargement ratio, its common-mode rejection ratio is more than or equal to 90dB, and input impedance is up to 1010Ω；Wherein, INA102 chips G1
4 pin connect 7 pin, and 5 pin connect 6 pin；INA102 chips G1 14 pin and 15 pin pass through passive filter circuit as input, reception
Treated EEG signals；INA102 chips G1 12 pin connect+15V DC voltages, and 9 pin connect -15V DC voltages, 10 pin ground connection；
INA102 chips G1 11 pin connect one end of the 3rd electric capacity C6 (being, for example, 1.2 μ F)；The 3rd electric capacity C6 other end is as defeated
Go out end (output ends in figure), export to second amplifying circuit, and connect first resistor R9 (be, for example, 1M Ω) one end and the
Four electric capacity C7 (being, for example, 220pF) one end；The first resistor R9 other end and the 4th electric capacity the C7 other end are grounded；Tenth electricity
Appearance C8 one end is grounded after being connected with the 11st electric capacity C9 one end, the tenth electric capacity C8 other end connection positive voltage VCC,
And the 11st electric capacity C9 other end connection negative supply voltage-VCC.Wherein, the tenth electric capacity C8 and the 11st electric capacity C9 effect
To absorb high-frequency noise, to reduce noise jamming.Mark " 104 " in figure beside C8 and C9 is to represent that its capacitance is, for example, 10
×104pF.In addition, inputR ends connect INA102 chips G1 15 pin in figure, inputG ends connect the 14 of INA102 chips G1
Pin.
According to a kind of implementation, as shown in Figure 2 C, second amplifying circuit 12-4 realizes that 3 times put using OPA369 chips G2
Big multiplying power；Wherein, OPA369 chips G2 1 pin connection second resistance R10 (being, for example, 0 Europe resistance) is used as input afterwards, receives
The treated signal of one-level amplifying circuit；OPA369 chips G2 2 pin connection-VCC, 5 pin connection+VCC；OPA369 chips G2's
3 pin connection 3rd resistor R13 (being, for example, 25k Ω) is grounded afterwards, and 4 pin connect the 4th resistance R11 (being, for example, 0 Europe resistance) conduct afterwards
Output end, export to low-pass filter circuit and carry out follow-up processing；5th electric capacity C10 and the 5th resistance R12 (being, for example, 59k Ω)
It is parallel between OPA369 chips G2 3 pin and 4 pin；12nd electric capacity C11 one end connects with the 13rd electric capacity C12 one end
After be grounded, the 12nd electric capacity C11 other end connection positive voltage VCC, and the 13rd electric capacity C12 other end connection negative electricity
Source voltage-VCC.Wherein, the 12nd electric capacity C11 and the 13rd electric capacity C12 act as absorb high-frequency noise, done with reducing noise
Disturb." 104 " in figure by C11 and C12 represent that its capacitance is, for example, 10 × 104pF。
According to a kind of implementation, low-pass filter circuit 12-5 uses fourth order low-pass wave filter, the fourth order low-pass wave filter
Realized by two second-order low-pass filter cascades；Wherein, the parameter of two second-order low-pass filters is different.
In addition, according to a kind of implementation, the available+5V DC voltages of level lifting circuit 12-8, pass through electric resistance partial pressure
Mode obtains+0.6V DC voltage, by EEG signals after filtering, after amplification by adder and+0.6V direct current
Voltage superposition；Level lifting circuit 12-8 also includes voltage follower.
Needle electrode unit is for example located in pedestal including pedestal, denture fixing device cement and electrode, electrode, the embedded setting of pedestal
In in denture fixing device cement, denture fixing device cement has measurement contact surface, and measurement contact surface is used for the head contact with subject.
In actual applications, needle electrode unit can also for example include the structure of such as injection needle tube, such as can be by pedestal and injection
Syringe is connected, and electrode is placed in injection needle tube through pedestal, is connected with the push rod in injection needle tube, and then can pass through hand
Dynamic operation push rod carrys out the propulsion and extraction of coordination electrode.Needle electrode unit gathers brain telecommunications for example with the mode of bipolar lead
Number, measuring loop is formed with red green electrode.
According to a kind of implementation, wireless charging module 3 can use magnetic resonance type wireless charging mode to EEG signals
Acquisition module 1 and storage display module 2 are powered, and it is the power management module of core as connecing to use using BQ25570 chips
Receiving end.Fig. 3 schematically shows the charging principle of wireless charging module.Wherein, wireless charging module 3 is included shown in Fig. 3
Magnetic resonance radiating circuit and transmitting coil, and each in the first power circuit unit 14 and second source circuit unit 26 is equal
Including the receiving coil shown in Fig. 3 and using BQ25570 chips as core power management module.As shown in figure 3, wireless charging module
3 connection power supplies, so, magnetic resonance radiating circuit exports high-frequency alternating current to transmitting coil, in transmitting coil and receives line
Magnetic field is formed between circle (that is, between receiving coil in transmitting coil and the first power circuit unit 14 and launching
Magnetic field is formed respectively between receiving coil in coil and second source circuit unit 26), and then by receiving coil to first
Being filled by core power management module of BQ25570 chips in power circuit unit 14 and second source circuit unit 26
Electricity.
Miniaturization low-power consumption eeg signal acquisition of the present utility model is placed in the head of measurand with radio transmission apparatus
Portion, picker can be in the EEG signals that suitable distance collects.
Preferred embodiment
1. make electroencephalogramsignal signal acquisition module
Signal condition unit (signal conditioning circuit unit 12 i.e. described above) includes multi-stage filter circuit, multistage amplification
Circuit, drive circuit, suppress Hz noise circuit etc..Collection, amplification, filtering of the signal condition unit to EEG signals are played non-
Often important effect.In electroencephalogramsignal signal acquisition module, EEG signals are collected by electrode first, then by signal condition electricity
Road, obtain purer EEG signals.By contrasting the function and characteristic of amplifying circuit, filter circuit, selection has higher
The signal conditioning circuit that common-mode rejection ratio, strong antijamming capability, low-power consumption, the device of small package form form enters to EEG signals
The preliminary processing work of row.Obtain relatively pure EEG signals, and make signal be amplified to certain degree facilitate it is follow-up
A/D such as changes, is wirelessly transferred at the progress of work.DA14580 major function includes：A/D turns are carried out to collecting EEG signals
Change, control bluetooth module that the EEG signals after processing are wirelessly transmitted into storage by DA14580 itself bluetooth modules integrated
Display module is stored and shown.
(1) needle electrode：The present embodiment selects a kind of push-in type needle electrode, including pedestal, denture fixing device cement, electrode etc.,
Electrode is inserted into the brain ad-hoc location for needing to gather.Although needle electrode can be made to subject animal brain to a certain extent
Into damage, but needle electrode has the advantages that capturing the signal that signal resolution is high, collects has higher signal to noise ratio.Using double
The mode of pole lead gathers EEG signals, and red green electrode forms measuring loop, respectively R-L, G-L.
(2) electrode condition detection circuit：Electrode condition detection circuit adds the active low-pass filter with enlarging function
Device, its object is to filter out the high fdrequency component in signal, prevent comparator from exporting by mistake, cause system erroneous judgement phenomenon.If electrode
Contact is good, collects useful signal, and input can be less than the threshold value of setting, it is believed that electrode connection status is normal, can directly enter
Row data acquisition.When input amplitude be more than setting threshold value, electrode delamination can be determined as, to be resurveyed.
(3) passive filter circuit：Passive filter circuit is made up of caching filter circuit and passive high-pass filtering circuit.Collection
EEG signals first have to through buffering filter circuit, buffering filter circuit be to be played by suppressing overshoot current and overshoot voltage
The effect of protection circuit.Eliminated using passive high-pass filtering circuit come the interference of the mV level polarizing voltages of self-electrode, it is whole to improve
The common-mode rejection ratio of individual circuit.Passive high-pass filtering circuit is made up of resaistance-capacity coupling circuit.Including magnetic bead, it has absorption quiet
The function of electric pulse, and can play and reduce on signal wire spike noise and the effect of High-frequency Interference.
(4) one-level amplifying circuit：The signal of collection after filtering after, because EEG signals are very faint, its amplitude range
Between the μ V of 20 μ V~200, so signal at least is amplified into thousands of times can just collect EEG signals.Use and divide in the system
Level amplification mode, if only one-level amplification is easy to make preamplifier saturation.One-level is enlarged into 1000 times, from INA102,
Its common-mode rejection ratio is more than 90dB, and input impedance is up to 1010Ω.INA102 has the characteristic of low power consumption and small volume, static
Electric current is less than or equal to 750 μ A, and minimum external form is 3.61x 2.64mm.
(5) second amplifying circuit：That second amplifying circuit is selected is OPA369, multiplication factor 3.
Multiplication factor calculation formula is：OPA369 is super low-power consumption, ultra-small volume operational amplifier, static
Electric current is less than or equal to 250 μ A, 1.8 × 1.85mm of minimum profile.
(6) low-pass filter circuit：Because the signal after passive filtering still has high-frequency noise, and EEG signals frequency
Scope concentrates on low-frequency range, so needing design low pass filter to filter out high-frequency noise.Transition be present in view of wave filter
Bandwidth, to make filter effect even more ideal, the exponent number of wave filter is improved by cascading multiple wave filters, so that transition band width
Narrow.The system uses the low pass filter of quadravalence, and the wave filter is to cascade to obtain by two second-order low-pass filters.This two
Individual second-order low-pass filter does not use identical parameter to obtain preferable attenuation characteristic.Because the system has amplified electricity
Road, so multiplication factor is arranged into 1 in this circuit.
(7) level lifting circuit：EEG signals after amplification are bipolarity, and amplitude is between -0.6V~0.6V, and this is
The input voltage range for the analog-digital converter that the DA14580 that system uses is integrated is between 0~1.2V, and it is unipolarity to input,
So to meet the needs of analog-digital converter, it is necessary to which signal is carried out into lifting.To enable effective signal to fully enter modulus
+ 5V voltages are obtained about+0.6V voltage by converter, the system by electric resistance partial pressure.EEG signals after filtering, amplification pass through
Adder is superimposed with+0.6V DC voltages.In order to prevent late-class circuit driving force insufficient, EEG signals after level lifting,
Voltage follower is added, to improve the carrying load ability of late-class circuit.
(8)DA14580：In order to reduce the volume of system and power consumption, ensure system reliability service, using DA14580 conducts
Core processing device.DA14580 has the advantages that small volume, integrated level height, small power consumption, whole system is more minimized, be low
Power consumption.And DA14580 is integrated with ARM process chips, A/D modular converters, bluetooth wireless transmission module etc., it enormously simplify and be
The complexity of system.DA14580 major function includes：To collecting, EEG signals carry out A/D conversions, control bluetooth module will be located
EEG signals after reason are wirelessly transmitted to display module and shown.A1 is 2.4G Bluetooth antennas, is connected with 35 pin of chip, its
In the second inductance L2 and electric capacity C83, C89 play a part of matching impedance, to obtain maximum wireless transmitted power, 11 and 12 pin
External 32.768KHz crystal oscillator provides clock frequency for the real-time clock of chip internal, and the external 16MHz of 29 and 30 pin is at a high speed
Crystal oscillator provides clock for chip, and 17 pin are the reset pins of chip.
2. store display module
Storing display module includes the SD card unit 22 of STM32F103RCT6 microprocessor units (single-chip microcomputer) 21, first, the
Two SD card units 23, the 2nd DA14580 Bluetooth wireless transmissions unit 24, LCD display unit 25 and second source circuit unit
26。
The frequency range of EEG signals is concentrated mainly on low-frequency range, mutually overlapping with the frequency range of many physiological signals and non-physiological signal
Close, be highly prone to the influence of pulse, power frequency and other white noises.Only preferable filter effect is extremely difficult to analog filter.
Therefore, digital filtering skill is carried out to the EEG signals received using the STM32F103RCT6 microprocessors of storage display module
Art processing.Mainly filter out the noises such as baseline drift, 50Hz power frequencies and eye electricity artefact.Electroencephalogramsignal signal acquisition module enters to EEG signals
Row collection, amplification, denoising etc., data are then passed through into Bluetooth Synchronous to storage display module, storage display in the form of array
Module stores data into the first SD card unit, then by STM32F103RCT6 microprocessors to the EEG signals that receive
Digital filtering processing is carried out, the signal after digital filtering is stored to the second SD card unit, is entered finally by LCDs
The display of row brain wave.
(1) STM32F103RCT6 microprocessors are the core for storing display module, all computings and control function
All completed by STM32 microprocessors, the microprocessor that the utility model uses is the list that STM32F103RCT6 belongs to Large Copacity
Piece machine, a total of 51 GPIO, connected for convenience with other sensor assemblies, all GPIO are all drawn by arranging pin.
Design of singlechip system includes reset circuit, clock circuit and power supply circuit etc..By the 3 of STM32 microprocessors, 4 pin and
5th, the external 32.768KHz and 8MHz of 6 pin difference crystal oscillator provides clock source for inside RTC and the STM32 microprocessor of single-chip microcomputer.
(2) SD card is mainly used in storing EEG signals.Display module is stored except needing to complete the reception to EEG signals
With also needed to outside display to the long-term storage of data, therefore storage circuit design and an important composition of storage display module
Part, whole SD card circuit are made up of 4GB high-speed SDH C cards and 8MB FLASH storage chips respectively, and SD card is mainly used in pair
The data of collection are stored, and FLASH memory is mainly used in storing some Chinese word libraries needed for SCM system etc..
(3) in order to preferably realize human-computer interaction function, display circuit and key indicator lamp circuit are also that storage shows mould
The important component of the hardware design of block.
3. wireless charging module
Wireless charging module can use magnetic resonance type wireless charging technology, to acquisition module and storage display module carry out compared with
Power supply at a distance, improve the antijamming capability of system, extend the acquisition time of system.Use using BQ25570 chips as core
Power management module as receiving terminal, the super low-power consumption that BQ25570 has boost charge device collects power management IC and milli
Micropower buck converter.Boost charge device can start in VIN as little as 330mV, and once start, can be low in VIN
To continuous collecting energy during 100mV.And BQ25570 repertoire be encapsulated in a lead 3.5mm of small size 20 ×
In 3.5mm Quad Flat No-leads (QFN) encapsulation (RGR), there is the advantages of small size.
Although describing the utility model according to the embodiment of limited quantity, above description, this technology are benefited from
It is in field it is clear for the skilled person that in the scope of the utility model thus described, it can be envisaged that other embodiments.In addition,
It should be noted that the language used in this specification primarily to readable and teaching purpose and select, rather than in order to
Explain or limit theme of the present utility model and select.Therefore, without departing from the scope and spirit of the appended claims
In the case of, many modifications and changes will be apparent from for those skilled in the art.For this
The scope of utility model, the disclosure done to the utility model are illustrative and not restrictive, the scope of the utility model
It is defined by the appended claims.
Claims (7)
1. low-power consumption eeg signal acquisition and radio transmission apparatus is miniaturized, it is characterised in that the miniaturization low-power consumption brain electricity
Signal acquisition includes electroencephalogramsignal signal acquisition module (1), storage display module (2) and wireless charging module with radio transmission apparatus
(3), the wireless charging module (3) is used to carry out the electroencephalogramsignal signal acquisition module (1) and the storage display module (2)
Wireless charging；
The electroencephalogramsignal signal acquisition module (1) includes needle electrode unit (11), signal conditioning circuit unit (12), first
DA14580 Bluetooth wireless transmissions unit (13) and the first power circuit unit (14)；
The storage display module (2) includes STM32F103RCT6 microprocessor units (21), the first SD card unit (22), the
Two SD card units (23), the 2nd DA14580 Bluetooth wireless transmissions unit (24), LCD display unit (25) and second source electricity
Road unit (26)；
The electroencephalogramsignal signal acquisition module (1) is used to gather EEG signals by the needle electrode unit (11), by brain electricity
Signal is sent to the signal conditioning circuit unit (12) and is amplified and filtering process, and will pass through the signal conditioning circuit
Signal after unit (12) processing passes through the first DA14580 Bluetooth wireless transmissions unit (13) output to storage display module
(2)；Wherein, first power circuit unit (14) is used for the signal conditioning circuit unit (12) and the first DA14580
Bluetooth wireless transmission unit (13) is powered；
The storage display module (2) is used for by the 2nd DA14580 Bluetooth wireless transmissions unit (24) reception described the
The signal of one DA14580 Bluetooth wireless transmissions unit (13) output, the signal is stored to the first SD card unit (22), and is passed through
The STM32F103RCT6 microprocessor units (21) carry out digital filtering to the signal, will be after the digital filtering
Signal storage to the second SD card unit (23), shown by the LCD display unit (25), wherein, described second
Power circuit unit (26) be used for the STM32F103RCT6 microprocessor units (21), the first SD card unit (22),
Second SD card unit (23), the 2nd DA14580 Bluetooth wireless transmissions unit (24) and the LCD display unit (25) supply
Electricity.
2. miniaturization low-power consumption eeg signal acquisition according to claim 1 and radio transmission apparatus, it is characterised in that institute
State the structure of the first DA14580 Bluetooth wireless transmissions unit (13) and the 2nd DA14580 Bluetooth wireless transmissions unit (24)
It is identical；
Wherein, the first DA14580 Bluetooth wireless transmissions unit (13) is used as core processor using DA14580 chips (U1)
Part, the DA14580 chips (U1) are integrated with ARM M0 kernels, A/D modular converters and bluetooth wireless transmission module, wherein, institute
State 35 pin of DA14580 chips (U1) and connect 2.4G Bluetooth antennas (A1) and the first electric capacity (C83) via the second inductance (L2)
One end, the other end ground connection of the first electric capacity (C83)；35 pin of the DA14580 chips (U1) also with the second electric capacity (C89) one
End is connected, the other end ground connection of second electric capacity (C89)；11 pin and 12 pin external one of the DA14580 chips (U1)
Individual 32.768KHz crystal oscillator (CRY2) to provide clock frequency for the internal real-time clock of the DA14580 chips (U1)；It is described
The external 16MHz high speed crystal oscillators (CRY1) of 29 pin and 30 pin of DA14580 chips (U1) to provide for the DA14580 chips (U1)
Clock；
22 pin of the DA14580 chips (U1) receive the EEG signals treated from signal conditioning circuit unit (12), warp
The bluetooth wireless transmission module integrated by itself is crossed after A/D to transmit to storage display module (2)；
17 pin of the DA14580 chips (U1) are the reset pins of the chip, and the reset pin connects reset key, institute
The both ends that reset key is connected to the 6th electric capacity (C4) are stated, 14 pin of the DA14580 chips (U1) connect the 6th electric capacity
(C4) one end, the other end of the 6th electric capacity (C4) connect the 6th resistance (R14) and are grounded afterwards；The DA14580 chips
(U1) 14 pin are also connected with one end of the 7th resistance (R15) and one end of the 8th resistance (R16), the 7th resistance (R15)
The other end connects 27 pin of the DA14580 chips (U1), and described in the connection of the other end of the 8th resistance (R16)
28 pin of DA14580 chips (U1)；The DA14580 chips are connected to after first inductance (L1) and the series connection of the 7th electric capacity (C14)
(U1) between 21 pin and ground；
7 pin of the 3 pin connection USB_8P chips (U5) of the DA14580 chips (U1), 26 pin of the DA14580 chips (U1)
6 pin of the USB_8P chips (U5) are connected, 6 pin of the DA14580 chips (U1) connect the 5 of the USB_8P chips (U5)
Pin, 25 pin of the DA14580 chips (U1) connect 4 pin of the USB_8P chips (U5), the DA14580 chips (U1)
14 pin connect 2 pin of the USB_8P chips (U5)；
The one of one end and the 9th electric capacity (C17) of 14 pin of the DA14580 chips (U1) and 15 pin the 8th electric capacity (C16) of connection
End, the other end of the 8th electric capacity (C16) connect the DA14580 chips with the other end of the 9th electric capacity (C17)
(U1) 16 pin and it is grounded.
3. miniaturization low-power consumption eeg signal acquisition according to claim 1 and radio transmission apparatus, it is characterised in that：
The signal conditioning circuit unit (12) includes electrode condition detection circuit (12-1), passive filter circuit (12-2), one
Level amplifying circuit (12-3), second amplifying circuit (12-4), low-pass filter circuit (12-5), drive circuit (12-6), suppression work
Frequency interference circuit (12-7) and level lifting circuit (12-8)；The electrode condition detection circuit is used for needle electrode unit
(11) connection status is detected, and the electrode condition detection circuit (12-1) includes active low-pass filter, for filtering out
High fdrequency component in the EEG signals that the needle electrode unit (11) collects；It is the passive filter circuit (12-2), described
One-level amplifying circuit (12-3), the second amplifying circuit (12-4), the low-pass filter circuit (12-5) are respectively used to institute
State EEG signals and carry out passive filtering, one-level amplification, two level amplification and low-pass filtering treatment；The drive circuit (12-6) and
The suppression Hz noise circuit (12-7) is used to carry out Hz noise suppression and denoising to the EEG signals；The level lifting
Circuit (12-8) is used to enter line level lifting to the signal for being sent to the first DA14580 Bluetooth wireless transmissions unit (13).
4. miniaturization low-power consumption eeg signal acquisition according to claim 3 and radio transmission apparatus, it is characterised in that institute
The enlargement ratio that one-level amplifying circuit (12-3) realizes 1000 times using INA102 chips (G1) is stated, its common-mode rejection ratio is more than
Or equal to 90dB, input impedance is up to 1010Ω；
Wherein, 4 pin of the INA102 chips (G1) connect 7 pin, and 5 pin connect 6 pin；14 pin and 15 pin of INA102 chips (G1)
As input, receive by the treated EEG signals of passive filter circuit (12-2)；12 pin of INA102 chips (G1) connect+
15V DC voltages, 9 pin connect -15V DC voltages, 10 pin ground connection；11 pin of INA102 chips (G1) connect the 3rd electric capacity (C6)
One end；The other end of 3rd electric capacity (C6) is exported to second amplifying circuit (12-4), and connect described as output end
One end of one resistance (R9) and one end of the 4th electric capacity (C7)；The other end of the first resistor (R9) and the 4th electric capacity (C7)
The other end is grounded；One end of tenth electric capacity (C8) is grounded after being connected with one end of the 11st electric capacity (C9), the tenth electric capacity
(C8) other end connection positive voltage (VCC), and the other end of the 11st electric capacity (C9) connection negative supply voltage (-
VCC)。
5. miniaturization low-power consumption eeg signal acquisition according to claim 3 and radio transmission apparatus, it is characterised in that institute
State second amplifying circuit (12-4) and 3 times of enlargement ratios are realized using OPA369 chips (G2)；
Wherein, the 1 pin connection second resistance (R10) of the OPA369 chips (G2) is used as input afterwards, receives one-level amplification electricity
The treated signal in road (12-3)；2 pin connection-VCC, 5 pin connection+VCC of the OPA369 chips (G2)；The OPA369 cores
The 3 pin connection 3rd resistor (R13) of piece (G2) is grounded afterwards, and 4 pin connect the 4th resistance (R11) and are used as output end afterwards, export to low
Bandpass filter circuit (12-5) carries out follow-up processing；5th electric capacity (C10) and the 5th resistance (R12) are parallel to the OPA369 cores
Between 3 pin and 4 pin of piece (G2)；One end of 12nd electric capacity (C11) is grounded after being connected with one end of the 13rd electric capacity (C12),
The other end connection positive voltage (VCC) of 12nd electric capacity (C11), and the other end of the 13rd electric capacity (C12)
Connect negative supply voltage (- VCC).
6. miniaturization low-power consumption eeg signal acquisition according to claim 1 and radio transmission apparatus, it is characterised in that institute
Wireless charging module (3) is stated using magnetic resonance type wireless charging mode to electroencephalogramsignal signal acquisition module (1) and storage display module
(2) it is powered, uses the power management module using BQ25570 chips as core to be used as receiving terminal.
7. miniaturization low-power consumption eeg signal acquisition according to claim 6 and radio transmission apparatus, it is characterised in that institute
Stating wireless charging module (3) includes magnetic resonance radiating circuit and transmitting coil；
The external power supply of the wireless charging module (3), is exported by the magnetic resonance radiating circuit to the transmitting coil
High-frequency alternating current, between the receiving coil in the transmitting coil and first power circuit unit (14), Yi Ji
Magnetic field is formed between receiving coil in the transmitting coil and the second source circuit unit (26), to the described first electricity
Power management module using BQ25570 chips as core and the second source circuit unit in source circuit unit (14)
(26) power management module using BQ25570 chips as core in is charged.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123303A (en) * | 2019-04-08 | 2019-08-16 | 清华大学深圳研究生院 | A kind of bioelectrical signals extraction system |
| CN111481194A (en) * | 2020-04-23 | 2020-08-04 | 翟红 | Feedback acquisition system for electroencephalogram signals |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123303A (en) * | 2019-04-08 | 2019-08-16 | 清华大学深圳研究生院 | A kind of bioelectrical signals extraction system |
| CN111481194A (en) * | 2020-04-23 | 2020-08-04 | 翟红 | Feedback acquisition system for electroencephalogram signals |
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