CN108113660A - A kind of portable more bio-signals amplifiers - Google Patents
A kind of portable more bio-signals amplifiers Download PDFInfo
- Publication number
- CN108113660A CN108113660A CN201810074140.1A CN201810074140A CN108113660A CN 108113660 A CN108113660 A CN 108113660A CN 201810074140 A CN201810074140 A CN 201810074140A CN 108113660 A CN108113660 A CN 108113660A
- Authority
- CN
- China
- Prior art keywords
- signal
- attenuation
- signal output
- module
- output part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention discloses a kind of portable more bio-signals amplifiers.The present invention includes multi signal acquisition module, signal amplification and attenuation module and MCU main control modules.Signal input part of the signal input part of the multi signal acquisition module as entire amplifier, signal output part amplifies with signal and the signal input part of attenuation module is connected；The signal amplification and the adjustable attenuation end of attenuation module are connected with the I/O ports of MCU main control modules, signal output part of the signal output part as entire amplifier.The characteristics of bioelectrical signals amplitude that the present invention is collected according to acquisition module is small, frequency is low, randomness is big, noiseproof feature is poor and input impedance is big, designing gain and bandwidth are suitable, impedance matching, driving force is sufficiently large, noise jamming is small and common-mode rejection ratio and the high integrated circuit of power supply rejection ratio, and several different acquiring biological electric signals can be amplified to the identifiable voltage magnitude of same subsequent conditioning circuit and be detected.
Description
Technical field
The invention belongs to Detection of Weak Signals amplifying technique field more particularly to a kind of portable more bio signal amplifications
Device.
Background technology
Technique of Weak Signal Detection is the detection to being submerged in small-signal in ambient noise.The main spy of bioelectrical signals
Point is amplitude is low, frequency is low, noise jamming is big and input impedance is big, and more bio signal amplifying technique requirements are to possessing more than feature
A variety of bioelectrical signals carry out denoising, amplification, filtering and gain control etc. reason, so as to fulfill single pass a variety of biologies
Electric signal amplifies.The bioelectrical signals that the cell of life entity different parts generates are not quite similar, we understand more life at present
Object electric signal has EEG signals, electro-ocular signal, electrocardiosignal, electromyography signal etc., and parameter is as shown in the table, wherein to signal shadow
Ringing larger noise jamming has flicker noise (1/f noise), white noise and drift.
Several parameters of bioelectrical signals are as shown in the table：
All the time, monitoring the various bioelectrical signals of organism has medical research extremely important effect, such as
Electrocardiosignal is of great significance to detection heart physiological pathological change, and EEG signals and nerve signal are to detecting and diagnosing nerve
Property disease, such as leucoderma have a very high value, and for obtaining these bioelectrical signals and it being observed and is analyzed
Medical electronics detecting system, bio-signals amplifier are wherein vital parts.
Largely expensive (such as EmotivEpoc wireless portables brain electricity system of bioelectrical signals detection device currently on the market
System price is up to 32000RMB), it is heavy and be difficult to flexibly move (such as medical brain electrical activity mapping instrument kj-2000, weigh about 50Kg), it is sick
Suffer from and do the inspection of a routine and generally require to be lined up in hospital to take and number wait, greatly waste sufferer and medical staff when
Between and energy, once there is fortuitous event, can check that the cause of disease will have side greatly to the treatment of sufferer quick, timely and convenience-for-peoplely
It helps, so cheap and portable bio signal detection technique is to put forth effort the direction of research always currently on the market.
Also occurs a small amount of portable bio-electrical signal detection apparatus product currently on the market for different kind organism telecommunications
Number detection and amplification, such as portable electrocardiograph, portable brain electric instrument etc., but these products are almost both for a certain special
Fixed bioelectrical signals effect, and when user is to be detected body multiple positions, then needs to use different special inspections
Measurement equipment also increases economic pressures while physical resource is wasted, and often power consumption is larger for these equipment, so, it is comprehensive
It is upper described, a kind of bio-signals amplifier portable, that a variety of bioelectrical signals can be detected of main sides redesign of the present invention,
It can connect the biosignal measuring device of the compositions such as subsequent communication module, display module or other modules completion with convenient
Ground is used by people.
The content of the invention
The main object of the present invention is to provide a kind of portable more bio-signals amplifiers, is collected according to acquisition module
The characteristics of bioelectrical signals amplitude is small, frequency is low, randomness is big, noiseproof feature is poor and input impedance is big, designing gain and band
Wide suitable, impedance matching, driving force is sufficiently large, noise jamming is small and common-mode rejection ratio and the high integrated electricity of power supply rejection ratio
Road by several different bioelectrical signals after gain controls, is amplified to the voltage magnitude that same subsequent conditioning circuit can identify.
Said integrated circuit is wrapped in inside with shell, and signal acquisition line is distributed in both ends with two class line of output line,
Scalable design easily can be pulled out and taken in, and the amplifier back side is designed with scalable elastic band and hanging ring, can be facilitated placement and be taken
Band, entire amplifier appearance design hommization and small solve that traditional biological signal amplifier device passage is complicated, volume is huge
The drawbacks of greatly and being difficult to portable use.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of portable more bio-signals amplifiers, including three modules：Multi signal acquisition module, signal amplification and attenuation
Module and MCU main control modules.Signal input part of the signal input part of the multi signal acquisition module as entire amplifier, letter
Number output terminal amplifies with signal and the signal input part of attenuation module is connected；The signal amplification and the adjustable attenuation of attenuation module
End is connected with the I/O ports of MCU main control modules, signal output part of the signal output part as entire amplifier.Multi signal gathers
The bioelectrical signals that module collects are input to signal amplification and attenuation module, and life is selected by the button in MCU governor circuits
The species of object electric signal carries out the amplification of different bioelectrical signals.
The multi signal acquisition module mainly includes the biological telecommunications such as brain electricity, eye electricity, electrocardio and myoelectricity of organism
Number acquisition.
This module is acquired EEG signals based on electrode cap, remaining electric signal simulates each letter with signal generator
Number magnitude, frequency and signal-to-noise ratio inputted, acquisition module has multiple input mouth, is adopted to carry out other biological electric signal
Collection can connect the sensing front end of custom-made on the market.
Described signal amplification and attenuation module include chopping modulation device, preamplifier, 50Hz trappers, buffer,
Amplification and insulation module, attenuation module, copped wave demodulator and wave filter.The signal output part and chopping modulation of multi signal acquisition module
The signal input part of device is connected；The signal output part of chopping modulation device is connected with the signal input part of preamplifier；Preceding storing
The signal output part of big device is connected with the signal input part of 50Hz trappers；The signal output parts of 50Hz trappers and buffer
Signal input part is connected；The signal output part of buffer is connected with the signal input part of Amplification and insulation module；Amplification and insulation module
Signal output part be connected with the signal input part of attenuation module；The signal output part of attenuation module and the signal of copped wave demodulator
Input terminal is connected, and adjustable attenuation end is connected with the I/O mouths of MCU main control modules；The signal output part and wave filter of copped wave demodulator
Signal input part be connected；Signal output part of the signal output part of wave filter as entire amplifier, can be with subsequent communication
Module or other modules are connected.
The Amplification and insulation module is in series by two Amplification and insulation units, and wherein Amplification and insulation unit includes a master
Amplifier and a buffer.Signal input part of the signal input part of main amplifier as Amplification and insulation unit, signal output
End is connected with the signal input part of buffer；Signal output part of the signal output part of buffer as Amplification and insulation unit.
The attenuation module is in series by two attenuation units, wherein attenuation units include a main amplifier, one
Attenuator and a buffer.Signal input part of the signal input part of main amplifier as attenuation units, signal output part with
The signal input part of attenuator is connected；The signal output part of attenuator is connected with the signal input part of buffer, and attenuator declines
Down control end is connected with the I/O mouths of microcontroller in MCU main control modules；Signal of the signal output part of buffer as attenuation units
Output terminal.
The MCU main control modules include single-chip minimum system and button selection circuit；The letter of button selection circuit
First signal input part of number output terminal and single-chip minimum system connects；Signal amplifies and the signal of attenuation module median filter
Second input terminal of output terminal and single-chip minimum system connects；The adjustable attenuation end of attenuator and microcontroller be most in attenuation module
The signal output part of mini system is connected.
There are four the button selection circuits, and button is used for user according to actual conditions selection signal species, represents respectively
Different bioelectrical signals (EEG signals, electro-ocular signal, electrocardiosignal and electromyography signal)；
The single-chip minimum system is mainly used for the automatic growth control of amplifier.
The specific work process of the present invention is as follows：
1. user wears electrode cap (being inconjunction with input line), then press in MCU main control modules in button selection circuit
One button for representing EEG signals；
2. electrode cap collects EEG signals, chopping modulation device is sent to by input line, passes through preamplifier, 50Hz
Amplification and insulation module is sent to after trapper and buffer, is next transferred to attenuation module, it is single while EEG signals transmit
It is EEG signals button that piece machine, which recognizes press, and the I/O mouths output high level of microcontroller is by two-stage attenuator in attenuation module
The dough softening be set to 10dB, amplification and the two-stage of the common 100dB of Pyatyi are subject to when EEG signals are transmitted in attenuation module
The attenuation of common 20dB, then when EEG signals are sent to copped wave demodulator from attenuation module, gain G 100-20=80dB, most
The wave filter i.e. output of amplifier is sent to afterwards；
3. when EEG signals are sent to the output terminal of amplifier by above-mentioned 2nd step, while also it is sent to microcontroller most
The A/D modules of mini system, microcontroller read present output voltage amplitude, judge whether to be less than threshold value (can be self-defined, this hair
It is bright to regard as 1V), if less than threshold value, the at this moment I/O mouths change low and high level output of microcontroller decays two-stage in attenuation module
The dough softening of device reduces 2dB, and the gain G of the EEG signals of amplifier out is G+4 at this time, if output amplitude is more than or equal to
1V then keeps single-chip processor i/o mouth output level mode, stablizes the output voltage of EEG signals.
4. the output voltage amplitude of the real-time read-out amplifier of microcontroller repeats the 3rd step.For the work of different bio signals
Make process, the dough softening that the sensing front end difference and the 2nd step microcontroller used except the 1st step is set when recognizing signal kinds is not
It is same to cause beyond initial gain difference, remaining all same.
With the above structure, the invention has the advantages that compared with the prior art,：
The present invention can realize amplifies a variety of bioelectrical signals within the specific limits, need not more exchange device, provide defeated
Enter, output interface and button selecting module, can flexibly detect each position of organism, and can be according to detecting
Delivery outlet is connected in different medical instruments and equipment or mobile terminal to observe and analyze by the follow-up effect of bioelectrical signals.
The present invention controls gain using microcontroller, can reduce the error generated during conversion gain, because monolithic
Machine judges that current gain controls whether reasonable (i.e. with threshold decision) according to detection amplifier output voltage, if unreasonable,
Gain is then changed using incremental manner immediately, has given full play to the effect of automatic growth control.
All circuits of the present invention integrate on a circuit board, and chip is using patch type, and circuit area is small, overall power
It is low, realize stablize, it is flexible with it is portable, allow user that can use the equipment whenever and wherever possible, and a power supply need ± 5V, usually
Household plug outlet can power, it is simple and convenient.
In conclusion the amplifier possesses small, easy to carry, system the operation is stable, intelligence degree be high, man-machine boundary
The features such as face is good is especially suitable for aging family or physical disabilities and uses, and gathers around and has broad application prospects and practical value, makes
It is strong with convenient and compatibility.
Description of the drawings
Fig. 1 is the portable more bio-signals amplifier functional block diagrams of the present invention；
Fig. 2 is four kinds of different bioelectrical signals analogous diagrams；
Fig. 3 is four kinds of signals by the amplified output signal simulation figure of the present invention；
Fig. 4 is the program flow diagram of MCU main control modules；
Fig. 5 is the portable more bio-signals amplifier schematic diagrams 1 of the present invention；
Fig. 6 is the portable more bio-signals amplifier schematic diagrams 2 of the present invention；
Fig. 7 is the portable more bio-signals amplifier schematic diagrams 3 of the present invention；
Fig. 8 is the portable more bio-signals amplifier schematic diagrams 4 of the present invention.
Specific embodiment
The present invention is further described with example below in conjunction with the accompanying drawings.
As shown in Figure 1, it is portable more bio-signals amplifier functional block diagrams.In the present embodiment, it is described portable more
Bio-signals amplifier is include but not limited to, multi signal acquisition module, chopping modulation device (MC1496), preamplifier
(AD8253), 50Hz trappers (LF351), buffer (OP07), Amplification and insulation module (LF351 amplifiers and OP07 buffers),
Attenuation module (LF351 amplifiers, HMC307 numerical-control attenuators and OP07 buffers), copped wave demodulator (MC1496), wave filter
(LF351) and MCU main control modules (PIC18F4520 microcontrollers).The signal input part of the multi signal acquisition module and organism
Skin or tissue contact, signal output part are connected with the signal input part of chopping modulation device；The signal of the chopping modulation device
Output terminal is connected with the signal input part of preamplifier；The signal output part of the preamplifier and the letter of 50Hz trappers
Number input terminal is connected；The signal output part of the 50Hz trappers is connected with the signal input part of buffer；The buffer
Signal output part is connected with the signal input part of Amplification and insulation module；The signal output part and decay mode of the Amplification and insulation module
The signal input part of block is connected；The signal output part of the attenuation module is connected with the signal input part of copped wave demodulator；It is described
The signal output part of copped wave demodulator is connected with the signal input part of wave filter；The signal output part of the wave filter and MCU master
Control mould microcontroller in the block is connected, and can be also connected according to different use with subsequent communications module or other modules.
After modules are attached assembling according to the method described above, all modules are packed into using special housing, are revealed
Go out signal input line, output signal line and four buttons, signal input line stretches out below the side of housing, output line from
The top of same side is stretched out, and four buttons are placed on housing upper front.
In the multi signal acquisition module, for the acquisition of EEG signals, carried out using electrode cap, belong to it is noninvasive, to people
The lossless acquisition mode of body, retrievable signal magnitude are uV grades；For the acquisition of electro-ocular signal, signal generator incoming quality level
The μ V of 50 μ V~200 are set to, signal-to-noise ratio is set to 5:1, frequency is set to 0.1~20Hz；For the acquisition of electrocardiosignal, signal generator
Incoming quality level is set to 400 μ V~2.5mV, and signal-to-noise ratio is set to 3:1, frequency is set to 0.05~200Hz；For adopting for electromyography signal
Collection, signal generator incoming quality level are set to 40 μ V~15mV, and signal-to-noise ratio is set to 3:1, frequency is set to 10~2000Hz.
The chopping modulation device, copped wave demodulator and wave filter are primarily to the flicker eliminated in subsequent amplification circuitry is made an uproar
Influence, high frequency is modulated to an AC modulated signals by low-frequency noise and offset voltage caused by sound and DC offset voltage
Place, and input signal still can eliminate noise jamming after modulation /demodulation in fundamental frequency, then low-pass filtered processing.
The preamplifier mainly takes differential configuration when to reduce power consumption to improve the common mode inhibition of signal, and it has
High input impedance realizes the lossless transmission of signal to match the high impedance of bio signal.
The 50Hz trappers are primarily used to filter out the alternating current caused by using high input impedance preamplifier
50Hz is disturbed.
The buffer is used for being isolated every grade of amplifying circuit, weakens interference of the noise to useful signal, so as to carry
The common-mode rejection ratio of high whole system.
The Amplification and insulation module and attenuation module are by the way of multi-stage cascade, because the gain of amplifier is bigger, it is steady
It is qualitative poorer, and one-stage amplifier is difficult to be increased to gain to be enough to allow small-signal can be on identified voltage value, institute
Reach the high-gain of requirement using casacade multi-amplifier cascade system with the module, buffer is then used for isolating between every level-one
It influences each other.According to the amplitude range for the multiple bioelectrical signals to be detected, to allow the EEG signals of amplitude minimum can
Be amplified to a volt rank, gain is up to 100dB, and allow again amplitude be tens mV the undistorted amplification of electromyography signal, increase
The minimum 40dB of benefit, the i.e. gain ranging of amplifier by preamplifier and Amplification and insulation module and should decline in 40dB~100dB
Subtract mould main amplifier gain in the block and be set to 10dB, altogether Pyatyi amplification, fixed gain reaches 100dB, while use possesses
Attenuator of the dough softening scope in 0~30dB or so is used in attenuation module, and inputting low and high level according to the I/O of microcontroller mouths gives
The adjustable attenuation end of attenuator is that can control the dynamic gain range of entire amplifier in 40dB~100dB, you can is realized each
The detection amplification of bioelectrical signals.
In order to make not flooded by noise from the input signal that the acquisition of multi signal acquisition module comes, the prime of main amplifier is selected
The capacitance and resistance (capacitance and ± 1% resistance that such as precision is ± 0.25pF) of high quality, and the power supply of entire circuit
Take the measure of special stabilization.
The first signal input part (i.e. 4 I/O mouthfuls) of single-chip minimum system is selected with button in the MCU main control modules
Four buttons of circuit are connected, for inquiry button value；Secondary signal input terminal (i.e. a simulation input mouth) and entire amplification
The signal output part of device is connected, for reading output voltage assignment；Signal output part (i.e. 10 I/ of single-chip minimum system
O mouthfuls) it is respectively connected with totally 10 adjustable attenuation ends of two attenuators of attenuation module, for controlling the increasing of entire amplifier
Benefit.
For the software program flow chart of MCU main control modules as shown in figure 4, wherein Key1 represents EEG signals, Key2 represents eye
Electric signal, Key3 represent electrocardiosignal, and Key4 represents electromyography signal.
The software section of MCU main control modules is included by key control, adjustable attenuation, A/D conversions.Described is real by key control
When the level value of single-chip processor i/o mouth that is connected with button of inquiry, be high level when button is not pressed, be low electricity by key pressing
It is flat；The adjustable attenuation is that the key value selection come according to detection sets the different dough softening, i.e. microcontroller and two decay
10 I/O that totally 10 adjustable attenuation ends of device are connected export low and high level according to table 1；The A/D conversions are by the mould of output
Intend signal amplitude and be converted to the binary numeral that microcontroller can identify, the amplitude size of signal is exported come anti-according to real-time detection
Feedback adjusts gain.
1 attenuator state table of table
As shown in Fig. 2, be the four kinds of different bioelectrical signals analogous diagrams collected by multi signal acquisition module, such as Fig. 3
It is shown, pass through the undistorted output signal simulation after signal amplification and attenuation module and MCU main control modules again for above-mentioned signal
Figure.
As shown in Fig. 2 analogous diagrams, several difference waveforms amplitudes of bio signals, frequency and signal-to-noise ratio are all different, MCU master
Control module will control the dough softening of attenuator by detecting the button pressed.Although the frequency of different bio signals is not
Together, but scope is roughly the same, and due to being all low frequency, input signal is carried out low frequency signal by signal amplification and attenuation module
The processing of aspect, so the frequency parameter of bio signal can be ignored.The impedance of the different and various bio signals of signal-to-noise ratio and
Difference preamplifier is designed with much relations, although bio signal impedance is generally bigger than normal, but as long as preamplifier meets
Input impedance is sufficiently large just can be from signal acquisition maximum power.Generally speaking, as long as preamplifier circuit design is superior enough,
So this parameter of signal-to-noise ratio can be ignored for entire amplifier system.
The amplitude of different kind organism electric signal is minimum, excursion is big and unstable, for same bio signal,
Amplitude range can change to mV grades from μ V, and scope is too big, and gain control module may be caused mistake occur when adjusting gain,
So in the case of gain is arranged to relatively low first in the programming of MCU main control modules, prevent gain from crossing ambassador's electricity
Road performance is destroyed, then detects whether present output signal has reached volt rank by feeding back, and specific method is will be defeated
Go out the simulation input mouth that signal is connected to microcontroller, microcontroller carries out A/D conversions after being sampled it can be seen that present output signal
Amplitude, if being not reaching to a volt rank, increased gain, by feedback regulation can allow output signal amplitude be maintained at one
In the scope of a stabilization, as shown in figure 3,4 width figures are to correspond respectively to four kinds of bio signals in Fig. 2 through the present invention to amplify in Fig. 3
Undistorted simulation waveform afterwards.
Fig. 5 to Fig. 8 is portable more bio-signals amplifier dimension sketch fronts, side and schematic rear view.
As shown in figure 5, portable more bio-signals amplifier dimension sketch fronts include amplifier shell 1, are arranged on and put
The different bio signal selection key switch 2 of big 1 positive four kinds of device housing, 3,4,5, power supply indicator 6, normal work instruction
Lamp 7；1 bottom of amplifier shell is equipped with power switch 8, and 1 side of amplifier shell is equipped with signal and inputs scalable stomidium 9, signal
Export scalable stomidium 10, signal input line 11 and output line 12.
As shown in Figure 6 to 8,1 back of amplifier shell is equipped with elastic band telescopic mouth 13, and scalable elastic band 14 passes through pine
Taut band telescopic mouth 13 is set, and 1 back top of amplifier shell is equipped with circular hanging ring card slot 16, for placing circular hanging ring 17；Circle
Shape hanging ring 17 is equipped with the double hanging buckles 18 of detachable ellipse；1 back of amplifier shell is located at scalable 14 back part of elastic band and sets
There is oval little groove 15, for convenient for users to the scalable elastic band 14 of pull-out；
1 front of more bio-signals amplifier housings it is upper there are four types of different bio signal selection key switches 2,3,4,
5th, power supply indicator 6 and normal work indicator light 7.The class of bioelectrical signals is selected when the button 2,3,4,5 is used to use
Type, button 2,3,4,5 correspond respectively to EEG signals, electro-ocular signal, electrocardiosignal and electromyography signal, by button during key pressing
It can light；Power switch of the power supply indicator 6 below amplifier side is lighted after opening；The normal work indicator light
7 only when signal input line 11 has a normal input, and output line 12 has and can be just always on during normal output.
More 1 sides of bio-signals amplifier housing have power switch 8, signal to input scalable stomidium 9, signal output
Scalable stomidium 10, signal input line 11 and output line 12.The power switch 8 selects for the power supply of whole system；
The signal inputs scalable stomidium 9 and the scalable stomidium 10 of signal output for placing untapped signal input line 11 and letter
Number output line 12；The signal input line 11 and 12 length of output line are scalable, and can easily be involved in signal input can stretch
In contracting stomidium 9 and the scalable stomidium 10 of signal output；
More 1 back sides of bio-signals amplifier housing have elastic band telescopic mouth 13, scalable elastic band 14, ellipse it is small
Groove 15, circular hanging ring card slot 16, circular hanging ring 17 and the double hanging buckles 18 of ellipse.The elastic band, which stretches, buckles 13 in amplifier shell
1 back side of body has two up and down, for clasping scalable elastic band 14；The scalable elastic band 14 can be close to amplifier when not used
Back, redundance are shunk inside elastic band telescopic mouth 13, when need to be worn in wrist can according to personal actual conditions into
Row adjustment length, scalable 14 length long enough of elastic band are dressed with meeting user；The ellipse little groove 15 is for side
Just user pulls out scalable elastic band 14；The circle hanging ring card slot 16 is used to place untapped circular hanging ring 17；It is described
Circular hanging ring card slot 16 and rotatable is fixed in circular 17 one end of hanging ring, when it is shunk when not used in circular hanging ring card slot 16
Portion, one end is not fixed when it needs and uses to be stretched out from circular 16 inside of hanging ring card slot, and is connected to oval double hanging buckles 18
Small hanging buckle one end；The circular hanging ring 17 of the double hanging buckles 18 of ellipse small hanging buckle one end connection charger baby when in use, it is another
A big hanging buckle can be hung on his object, to reach portable function.
Using above-mentioned technical proposal, exemplified by detecting EEG signals, portable more bio signals provided by the invention are used
During amplifier, following steps are specifically divided into：
The first step presses power switch 8, and can seeing amplifier by power supply indicator 6, whether electricity is sufficient, if seeing electricity
Source indicator light 1s is bright, 1s goes out, and illustrates not enough power supply, if seeing, power supply indicator is always on, and illustrates electricity abundance.
Second step presses the corresponding Key1 key switches 2 of EEG signals, and Key1 key switches 2, which are always on, represents chosen successfully,
The signal input line 11 in the scalable stomidium 9 of signal input is taken out, the detecting electrode input a signal on line 11 is positioned over brain electricity
Signal position, whether observation normal work indicator light 7 is lighted after placing 5s, if normal work indicator light 7 is always on, illustrates letter
The detecting electrode placement location of number input line 11 is suitable, and signal input is effective；If normal work indicator light 7 occurs, 1s is bright, 1s goes out,
Illustrate that the detecting electrode placement of signal input line 11 is unstable, signal input is caused to cut in and out；If it is normal to work normally indicator light 7
It goes out, illustrates that signal input is invalid.
3rd step is taken out output line 12 from the scalable stomidium 10 of signal output, is connected in display module,
It can be seen that output signal is presented one and is gradually increased to stable process in display screen in display module, this process will not
More than 3s, final output signal amplitude stability is in 1V or so.
4th step, detection finish, and remove signal input line 11 and are involved in the scalable stomidium 9 of signal input, by signal output
Line 12 is involved in the scalable stomidium 10 of signal output, turns off the power switch 8.
Claims (2)
1. a kind of portable more bio-signals amplifiers, it is characterised in that including multi signal acquisition module, signal amplification and attenuation
Module, MCU main control modules；Signal input of the signal input part of multi signal acquisition module as entire more bio-signals amplifiers
End, signal output part amplifies with signal and the signal input part of attenuation module is connected；Signal amplifies and the attenuation control of attenuation module
End processed is connected with the I/O ports of MCU main control modules, signal output of the signal output part as entire more bio-signals amplifiers
End；
The multi signal acquisition module mainly includes the bioelectrical signals such as brain electricity, eye electricity, electrocardio and myoelectricity of organism
Acquisition；
The signal amplification and attenuation module include chopping modulation device, preamplifier, 50Hz trappers, buffer, amplification
Isolation module, attenuation module, copped wave demodulator and wave filter；The signal output part of multi signal acquisition module and chopping modulation device
Signal input part is connected；The signal output part of chopping modulation device is connected with the signal input part of preamplifier；Preamplifier
Signal output part be connected with the signal input part of 50Hz trappers；The signal output part of 50Hz trappers and the signal of buffer
Input terminal is connected；The signal output part of buffer is connected with the signal input part of Amplification and insulation module；The letter of Amplification and insulation module
Number output terminal is connected with the signal input part of attenuation module；The signal output part of attenuation module is inputted with the signal of copped wave demodulator
End is connected, and adjustable attenuation end is connected with the I/O mouths of MCU main control modules；The signal output part of copped wave demodulator and the letter of wave filter
Number input terminal is connected；Signal output part of the signal output part of wave filter as entire more bio-signals amplifiers, connect with subsequently
Communication module or other function modules；
The Amplification and insulation module is in series by two Amplification and insulation units, and wherein Amplification and insulation unit is put including a master
Big device and a buffer；Signal input part of the signal input part of main amplifier as Amplification and insulation unit, signal output part
It is connected with the signal input part of buffer；Signal output part of the signal output part of buffer as Amplification and insulation unit；
The attenuation module is in series by two attenuation units, and wherein attenuation units include a main amplifier, an attenuation
Device and a buffer；Signal input part of the signal input part of main amplifier as attenuation units, signal output part and attenuation
The signal input part of device is connected；The signal output part of attenuator is connected with the signal input part of buffer, the attenuation control of attenuator
End processed is connected with the I/O mouths of microcontroller in MCU main control modules；Signal output of the signal output part of buffer as attenuation units
End；
The MCU main control modules include single-chip minimum system and button selection circuit；The signal of button selection circuit is defeated
First signal input part of outlet and single-chip minimum system connects；Signal amplifies and the signal output of attenuation module median filter
End is connected with the second input terminal of single-chip minimum system；The adjustable attenuation end of attenuator is minimum with microcontroller in attenuation module is
The signal output part of system is connected；
The button selection circuit is used to select the species of bioelectrical signals；
The single-chip minimum system is mainly used for the automatic growth control of more bio-signals amplifiers.
A kind of 2. portable more bio-signals amplifiers as described in claim 1, it is characterised in that the minimum system of the microcontroller
The microcontroller of system carries out threshold decision according to the output voltage of reading, so as to judge that current gain controls whether rationally, if not
It is reasonable then using incremental manner change gain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074140.1A CN108113660B (en) | 2018-01-25 | 2018-01-25 | Portable multi-biological signal amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074140.1A CN108113660B (en) | 2018-01-25 | 2018-01-25 | Portable multi-biological signal amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108113660A true CN108113660A (en) | 2018-06-05 |
| CN108113660B CN108113660B (en) | 2023-05-19 |
Family
ID=62233144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810074140.1A Active CN108113660B (en) | 2018-01-25 | 2018-01-25 | Portable multi-biological signal amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108113660B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109700457A (en) * | 2019-03-05 | 2019-05-03 | 邢台医学高等专科学校 | A kind of ECG acquisition platform |
| CN109730721A (en) * | 2019-01-25 | 2019-05-10 | 业成科技（成都）有限公司 | Physiological characteristic data measuring device |
| CN110897612A (en) * | 2019-12-15 | 2020-03-24 | 复旦大学 | Multichannel human physiological signal acquisition front end based on quadrature chopper modulation |
| CN112290986A (en) * | 2020-10-29 | 2021-01-29 | 太仓市同维电子有限公司 | Signal amplification device and signal automatic adjustment amplification method |
| CN113855041A (en) * | 2021-09-14 | 2021-12-31 | 浙江智柔科技有限公司 | Skin treatment method, skin treatment device, and storage medium |
| CN116251295A (en) * | 2023-03-09 | 2023-06-13 | 北京工业大学 | Focal epileptic electric guidance-nerve electric regulation and control system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0513810D0 (en) * | 2005-07-06 | 2005-08-10 | Hancock Christopher P | A non-invasive monitoring system |
| CN101129258A (en) * | 2007-07-13 | 2008-02-27 | 深圳迪美泰数字医学技术有限公司 | Pure digital medical amplifier used for recording clinical or non-clinical biological signal |
| US20110026739A1 (en) * | 2009-06-11 | 2011-02-03 | Audioasics A/S | High level capable audio amplification circuit |
| WO2014145761A2 (en) * | 2013-03-15 | 2014-09-18 | Certusview Technologies, Llc | Electro-optical apparatus and methods for upstream alignment of cable communication systems |
| CN106301275A (en) * | 2016-08-30 | 2017-01-04 | 国网安徽省电力公司岳西县供电公司 | A kind of noise muffler |
-
2018
- 2018-01-25 CN CN201810074140.1A patent/CN108113660B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0513810D0 (en) * | 2005-07-06 | 2005-08-10 | Hancock Christopher P | A non-invasive monitoring system |
| CN101129258A (en) * | 2007-07-13 | 2008-02-27 | 深圳迪美泰数字医学技术有限公司 | Pure digital medical amplifier used for recording clinical or non-clinical biological signal |
| US20110026739A1 (en) * | 2009-06-11 | 2011-02-03 | Audioasics A/S | High level capable audio amplification circuit |
| WO2014145761A2 (en) * | 2013-03-15 | 2014-09-18 | Certusview Technologies, Llc | Electro-optical apparatus and methods for upstream alignment of cable communication systems |
| CN106301275A (en) * | 2016-08-30 | 2017-01-04 | 国网安徽省电力公司岳西县供电公司 | A kind of noise muffler |
Non-Patent Citations (1)
| Title |
|---|
| 孙宇舸;叶柠;于艳波;: "基于右腿驱动技术的脑电信号放大器的设计" * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109730721A (en) * | 2019-01-25 | 2019-05-10 | 业成科技（成都）有限公司 | Physiological characteristic data measuring device |
| CN109700457A (en) * | 2019-03-05 | 2019-05-03 | 邢台医学高等专科学校 | A kind of ECG acquisition platform |
| CN110897612A (en) * | 2019-12-15 | 2020-03-24 | 复旦大学 | Multichannel human physiological signal acquisition front end based on quadrature chopper modulation |
| CN112290986A (en) * | 2020-10-29 | 2021-01-29 | 太仓市同维电子有限公司 | Signal amplification device and signal automatic adjustment amplification method |
| CN113855041A (en) * | 2021-09-14 | 2021-12-31 | 浙江智柔科技有限公司 | Skin treatment method, skin treatment device, and storage medium |
| CN116251295A (en) * | 2023-03-09 | 2023-06-13 | 北京工业大学 | Focal epileptic electric guidance-nerve electric regulation and control system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108113660B (en) | 2023-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108113660A (en) | A kind of portable more bio-signals amplifiers | |
| CN106725459A (en) | Eeg signal acquisition system | |
| CN101390747A (en) | Remote wireless network physiology multi-parameter monitoring device | |
| CN201324241Y (en) | Remote wireless network physical multi-parameter monitor | |
| CN106214147A (en) | A kind of wearable monitor device | |
| CN105997050A (en) | Wearable non-contact electrocardio acquisition device and non-contact electrocardio acquisition method | |
| CN101422362A (en) | Wireless cardiac bioelectricity monitoring system with motion artifact elimination function | |
| CN106308792A (en) | Portable collection device for high precision myoelectric signal | |
| CN102488511A (en) | 3G (The 3rd Generation Telecommunication) electro-cardio monitoring system | |
| CN105662459A (en) | Wearable lung sound detection device | |
| CN109044330A (en) | A kind of electrocardio based on single armed, surface myoelectric and Inertia information Collect jointly device | |
| CN206576860U (en) | Anesthesia depth monitor | |
| CN108309279A (en) | A kind of wearable electrocardiograph monitoring device | |
| CN104905773A (en) | Armband type vital sign acquisition system and method, armband type vital sign processing system and method, and armband type vital sign acquisition monitoring system | |
| CN106344003A (en) | Multifunctional auxiliary electrocardiogram monitoring device | |
| CN105434088A (en) | Artificial limb surface electromyogram signal acquisition system based on wireless sensor networks | |
| CN102488510A (en) | Wireless body surface bioelectricity collection device | |
| CN201968675U (en) | ARM (Advanced RISC Machine)-based body surface stomach electric signal collecting analyzer | |
| WO2018129718A1 (en) | Device and method for use in detecting electrocardio signals | |
| CN204708842U (en) | Portable cardiac monitoring equipment | |
| CN204744156U (en) | Guardianship device based on wireless biomedical sensing | |
| CN204306816U (en) | Low-power consumption heart rate monitor | |
| CN103654742A (en) | Multi-parameter identification system for monitoring human health conditions | |
| CN201308487Y (en) | Amblyopia detecting system based on P-VEP | |
| CN205338943U (en) | Wireless long -distance electrocardio monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |