CN106725466A - A kind of bow-backed alarm set and based reminding method based on surface myoelectric technology - Google Patents
A kind of bow-backed alarm set and based reminding method based on surface myoelectric technology Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/389—Electromyography [EMG]
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
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- A—HUMAN NECESSITIES
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- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/7455—Details of notification to user or communication with user or patient ; user input means characterised by tactile indication, e.g. vibration or electrical stimulation
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- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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Abstract
The invention discloses a kind of bow-backed alarm set and based reminding method based on surface myoelectric technology, belong to body-care field.Bow-backed alarm set of the invention, including the elastic suspenders positioned at human body back and the band positioned at waist, surface electromyogram signal acquisition module, signal processing module and signal performing module are provided with the elastic suspenders, the surface electromyogram signal acquisition module and signal performing module are electrically connected with signal processing module, surface electromyogram signal acquisition module distribution is in elastic suspenders, and correspondence human body latissimus dorsi region；The signal performing module is used to produce vibration or auditory tone cues to the bow-backed information for detecting.The present invention makes it form effectively cooperation when in use with surface myoelectric detecting electrode by the improvement to band structure, improves the degree of accuracy of bow-backed detection, and bow-backed attitude that can be in time to user is reminded.
Description
Technical field
The present invention relates to body-care technical field, more specifically to a kind of hunchback based on surface myoelectric technology
Alarm set and based reminding method.
Background technology
In recent years, China humpback number is on the increase.Especially teenager, due to not keeping waist to endure in study
It is straight or straight and upright nonstandard, cause teenager's hunchback phenomenon serious long lasting for this state.Bow-backed deformity can often cause chest
Wide deformity, the health problem, greatly influence breathing, circulation and digestion work(such as diaphragm activity is limited, internal organ are frightened, chest and abdomen are affixed
Energy.Therefore, prevention hunchback seems particularly significant.
There are the bow-backed auxiliary equipment of some preventions, such as BABAKA in the market.This bow-backed correction mode of BABAKA is main
It is to make waist straight and upright by auxiliary force, by forcing power by shoulder toward post-tensioning, while producing a downward pulling force, is unfavorable for bone
Normal development, and wear and free all inconvenient.Additionally, similar bow-backed apparatus for correcting is all to carry out attitude by external force to rectify
Just, user can not be made to form the consciousness of self, is cured the symptoms, not the disease, it is difficult to play long-term rectification effect.Therefore,
It is particularly important how a kind of application effect good bow-backed apparatus for correcting is developed.
Find there is the technology for making it independently correct faulty sitting posture to user's prompting, such as side in the prior art by retrieval
Case 1：China Patent No.：CN 2639967Y, the day for announcing：On September 8th, 2004, bow-backed attitude is prevented that application discloses a kind of
Alarm, power supply is connected to each circuit by wire, and signal generator sends detection signal by signal transduction and attitude detection
The signal receiver being connected to signal processor is input into, alarm is connected with signal processor；The neck with people can be hung
Soft rope band on son is connected；Power supply uses dry cell, and signal generator is a light emitting diode；The signal receiver is
One photosensitive component, the signal that photosensitive component will be detected is converted to electric signal and is sent to signal processor, by signal
Processor is amplified treatment to it, produces an alarm signal to be input into alarm, and vibrations are produced so as to allow, and reaches prompting police
The purpose shown.
And for example scheme 2：Chinese Patent Application No.：201410158064.4, the applying date：On April 16th, 2014, this application case
The back apparatus for correcting of bending warning, including an overcoat for vest structure are disclosed, overcoat back is the stock of template, in set
Some monitoring sites are set on frame, dc source, switch, alarm module are set, monitoring site is because human body is used when startup is used
And bend, when some sites bend overlong time, alarm module sends prompt message, points out correction；Monitoring is set between site
Pulling force monitoring modular, degree of crook is determined by determining pulling force；Dc source sets charging structure.
It is the bending that human body back is judged using signal detection for above two scheme, after entering signal transacting, has
Alarming device sends signal, reminds user's correction attitude.This method can more cultivate oneself of user relative to external force correction
I realizes in attitude correction, but for how to be accurately detected bow-backed information, is not given clearly in above two scheme
Explain.
Either wearable device or suspension arrangement, only accurately detecting bow-backed information can just be reminded, if inspection
Measurement information is forbidden, and still sends alarm signal under normal sitting position, it will cause user constantly to adjust attitude, so that alarm disappears
Remove, this attitude is likely to be a kind of sitting posture of mistake.In the course of time, user does not correct attitude not only, and one is formed on the contrary
Incorrect sitting posture is planted, is run counter to desire.Therefore, the accuracy of signal detection turns into the key factor of the bow-backed alarm set of restriction.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome the shortcomings of to be difficult to the bow-backed signal of accurate detection in the prior art, there is provided Yi Zhongji
In the bow-backed alarm set and based reminding method of surface myoelectric technology.Technical scheme, by the improvement to band structure,
It is formed effectively cooperation when in use with surface myoelectric detecting electrode, improve the degree of accuracy of bow-backed detection, can be right in time
The bow-backed attitude of user is reminded.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of bow-backed alarm set based on surface myoelectric technology of the invention, including positioned at the elastic suspenders of human body back
With the band positioned at waist, surface electromyogram signal acquisition module, signal processing module and signal are provided with the elastic suspenders and are held
Row module, the surface electromyogram signal acquisition module and signal performing module are electrically connected with signal processing module, surface myoelectric
Signal acquisition module is distributed in elastic suspenders, and correspondence human body latissimus dorsi region；The signal performing module is used for detection
The bow-backed information for arriving produces vibration or auditory tone cues.
Used as further improvement of the present invention, the elastic suspenders top leads to two shoulder belts, the other end of shoulder belt
It is connected with band.
Used as further improvement of the present invention, the shoulder belt is with band for integral type elastic webbing or by being clasped
Connection is connected by VELCRO.
As further improvement of the present invention, the band be located at abdominal region at be provided with chest cup, the chest cup top with
It is the distance between following to be more than band width.
Used as further improvement of the present invention, described elastic suspenders both sides are arc, are formed and are located at elastic suspenders two
The wing band of side, the wing band is fitted with human body waist.
Used as further improvement of the present invention, the surface electromyogram signal acquisition module includes being symmetricly set on the elastic back of the body
Surface myoelectric detecting electrode with both sides, surface myoelectric detecting electrode has the contact surface fitted with human body back.
As further improvement of the present invention, 3 electrode slices, and 3 are provided with the surface myoelectric detecting electrode
Electrode slice is arranged in inverted triangle, and the electrode slice of bottom is formed with two electrode slices at top in another surface myoelectric detecting electrode
One signal sampling channel.
As further improvement of the present invention, the signal processing module include preposition modulate circuit plate, capture card and
Processor；The preposition modulate circuit plate is used to carry out denoising and amplification to the electromyographic signal for gathering, and by the signal after treatment
It is sent in supporting capture card；
The capture card is used to for the simulation electromyographic signal for gathering to be converted into the recognizable digital electromyographic signal of processor, and
Digital electromyographic signal is sent to processor；
Whether the processor carries out feature extraction to surface electromyogram signal, and then carries out pattern-recognition, judges user
Hunchback, when hunchback is judged as, processor sends execution information, the action of signal performing module to signal performing module.
As further improvement of the present invention, switch is provided with the band, the switch is electrically connected with power module,
Connecting line is located inside band.
A kind of bow-backed based reminding method as being based on surface myoelectric technology of the invention, carries out hunchback and carries using the awake device of hunchback
Wake up, its process is：
1) user is worn by bow-backed alarm set, startup power supply module, closing of circuit, system starts；
2) the surface myoelectric detecting electrode for being placed in back starts to gather the electromyographic signal of latissimus dorsi, when the action of wearer back
When, the electromyographic signal of latissimus dorsi can produce change, and then sending the signal to supporting preposition modulate circuit plate carries out signal
Make an uproar and enhanced processing；
3) capture card is processed the signal treated by front end circuit, signal is changed into what can be recognized by computer
Digital electromyographic signal；Digital electromyographic signal is sent to the processor, and system judges now whether wearer is bow-backed；
4) when system judges bow-backed, processor sends execution information, signal performing module to signal performing module
Action, sends alerting signal.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) a kind of bow-backed alarm set based on surface myoelectric technology of the invention, sets surface flesh in elastic suspenders
Electrical signal collection module, signal processing module and signal performing module, carry out signal and adopt using surface electromyogram signal acquisition module
Collection, carries out whether feature extraction and pattern-recognition are bow-backed to judge wearer to the electric signal, and accuracy in detection is high, by individuality
Difference and external environment influence are small, can carry out bow-backed prompting to user accurately and in time.
(2) a kind of bow-backed alarm set based on surface myoelectric technology of the invention, surface is symmetrical arranged in waist both sides
Checking with EMG method electrode, can fully ensure that surface myoelectric detecting electrode is contacted with human body back by the wing band structure of arc；This
Outward, signal detection is carried out using binary channels, realizes message complementary sense, substantially increase the degree of accuracy of detection.
(3) a kind of bow-backed alarm set based on surface myoelectric technology of the invention, band is engaged with shoulder belt, from two
Direction is positioned, it is to avoid detecting electrode position offsets；When hunchback is detected, the motor at back produces vibrations, and information can
Accurately transmitted.
(4) a kind of bow-backed based reminding method based on surface myoelectric technology of the invention, using surface myoelectric detection technique
Principle detects to the surface electromyogram signal of back latissimus dorsi, realizes the accuracy of bow-backed state-detection；By to wearer
Back carries out detection early warning, can strengthen the real-time monitoring to wearer's hunchback state, solves existing main flow detection technique and deposits
Such as by the big and bow-backed feature correlation of wearer's individual difference and external environment influence is low, detection technique difficulty
Problem.
Brief description of the drawings
Fig. 1 is the structural representation of bow-backed alarm set of the invention；
Fig. 2 is the system schematic of bow-backed alarm set of the invention；
Fig. 3 is connection button shoulder harness structure schematic diagram in the present invention；
Fig. 4 is electrode slice attachment structure schematic diagram in the present invention；
Fig. 5 reminds flow chart for bow-backed in the present invention；
Fig. 6 is that wavelet transformation and VPMCD algorithms detect figure to bow-backed state recognition accuracy.
Label declaration in schematic diagram：11st, elastic suspenders；12nd, wing band；13rd, band；14th, chest cup；15th, shoulder belt；16th, even
Connect button；21st, power module；22nd, switch；23rd, vibrator；24th, surface myoelectric detecting electrode.
Specific embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1, a kind of bow-backed alarm set based on surface myoelectric technology of the present embodiment, including positioned at human body back
Elastic suspenders 11 and the band 13 positioned at waist, the top of elastic suspenders 11 leads to two shoulder belts 15, the other end of shoulder belt 15
It is connected with band 13, shoulder belt 15 is integral type elastic webbing with band 13.Elasticity can be carried on the back by elastic shoulder belt 11 and band 13
Band is stably fixed to back, it is to avoid it is shifted over.Shoulder belt and band can also be by snapping fit attachment, or by VELCRO
It is connected, is not specifically limited.Shoulder belt 15 and band 13 are integral type structure in the present embodiment, therefore, both have to
There is preferable elasticity, cannot otherwise dress.
With reference to Fig. 2, surface electromyogram signal acquisition module, signal processing module and signal are provided with elastic suspenders 11 and perform mould
Block, the surface electromyogram signal acquisition module and signal performing module are electrically connected with signal processing module, surface electromyogram signal
Acquisition module is distributed in elastic suspenders 11, and correspondence human body latissimus dorsi region；The signal performing module is used for detecting
Bow-backed information produce vibration or auditory tone cues.For the power module of system power supply may be provided in elastic suspenders 11, can also set
Put on band, be not specifically limited.
Wherein, signal processing module includes preposition modulate circuit plate, capture card and processor；The preposition modulate circuit plate
For carrying out denoising and amplification to the electromyographic signal for gathering, and the signal after treatment is sent in supporting capture card；
Capture card is used to for the simulation electromyographic signal for gathering to be converted into the digital electromyographic signal that processor can recognize that, and by number
Word electromyographic signal is sent to processor；Processor carries out feature extraction to surface electromyogram signal, and then carries out pattern-recognition, judges
Whether user is bow-backed, and when hunchback is judged as, processor sends execution information to signal performing module, and signal performing module is moved
Make, produce corresponding vibration or auditory tone cues.Processor can be using wavelet transformation and VPMCD algorithms to hunchback and non-camel
Back of the body two states are identified, and can be also identified using other algorithms.Can be using LabVIEW and matlab design electromyographic signals
The program such as collection, feature extraction, pattern-recognition and vibrating motor control/sound prompting.Above-mentioned LabVIEW and matlab journeys
Sequence is checking with EMG method field routine techniques, is not repeating.
It is well known that human body is in hunchback, the most substantially, chest muscle folds angle and has substantially for chest and back change
Change, back can swell.Traditional detection method is also favorably detected that the method is more directly to flexes with electrode
Angle is detected that such as the number of patent application 201410158064.4 of scheme 2 is the detection of external physical change, by the change on plate
Shape test point discriminates whether hunchback, and the program can realize testing goal, but the degree of accuracy is inadequate.
Hunchback for user is reminded, and is easily to realize using vibration or sound prompting, and Major Difficulties are
How bow-backed information is accurately collected.Detected using surface electromyogram signal acquisition module in the present invention, obtained information complete
The full limitation for having broken conventional external testing equipment, can carry out bow-backed differentiation, relatively according to the form of muscle, stretching change
Had large improvement in conventional art tool.
And when signal acquisition is carried out using surface electromyogram signal acquisition module, chest and muscle of back can all be changed,
And body encloses a change the most substantially under straight and upright attitude and hunchbacked attitude pectus, the point is ideal signal acquisition
Point.But found in specific experiment, if designing bow-backed signal acquisition point at the position, it is difficult to combined with wearable device, and
Influence of the gender differences to device structure is very big, once detecting electrode piece is arranged in wearable device, detecting electrode piece is difficult to
Preferably fitted with human body.Even if can fit, when human body is in bow-backed state, because chest muscle is gathered, wearable device
Swelled, cause laminating degree poor, cannot now be detected, it is difficult to reached the purpose of bow-backed prompting.
For these reasons, using latissimus dorsi as test point, when human body bends over hunchback, back clothing is drawn the present invention
Tightly, can preferably be fitted with back, if surface electromyogram signal acquisition module to be arranged on the corresponding region of latissimus dorsi, more helped
In raising accuracy in detection.The present invention is arranged on surface electromyogram signal acquisition module in elastic suspenders, connects on the elastic suspenders
Band and shoulder belt are connected to, band makes elastic suspenders be attached to back, and shoulder belt can then prevent elastic suspenders in physical activity process
Middle downslide, and can prevent elastic suspenders from rotating, it is ensured that surface electromyogram signal acquisition module is corresponding with human body latissimus dorsi region, it is ensured that
Surface electromyogram signal acquisition module is in monitoring point.
Embodiment 2
A kind of bow-backed alarm set based on surface myoelectric technology of the present embodiment, its abridged edition structure is same as Example 1,
Its difference is：As shown in figure 3, band 13 is connected by junction button 16 in the present embodiment.Surface electromyogram signal acquisition mould
Block includes being symmetricly set on the surface myoelectric detecting electrode 24 of the both sides of elastic suspenders 11, and surface myoelectric detecting electrode 24 has and people
The contact surface of body back laminating, internal electrode can fit with latissimus dorsi, and when human motion, surface myoelectric detecting electrode 24 can
Collect corresponding signal.
The bottom both sides of elastic suspenders 11 in the present embodiment are arc, form the wing band 12 positioned at the both sides of elastic suspenders 11,
Wing band 12 is fitted with human body waist.The wing band 12 of arc can be combined fully with organization of human body, and wing band 12 is elastic strip.
The middle part of elastic suspenders 11 is provided with circular hole.Because vertebra protrudes higher, in the human body back of a bow, it is easy to make elastic suspenders
Moved on 11, and after circular hole is set, can engaged with the vertebra position arched, reduced elastic suspenders 11 and shift.
Further, band 13 is located at abdominal region and is provided with chest cup 14, the chest 14 tops of cup with it is the distance between following
More than the width of band 13, not less than distance between upper and lower side, its difference is 0~3cm to distance between 14 left and right both sides of chest cup, this
Embodiment can be preferably 1cm differences.
What deserves to be explained is, for more preferable Detection results, it is necessary to set chest cup on band.For Detection results
Speech, as long as setting band and shoulder belt, it is already possible to realize detection and localization purpose, but the effect of chest cup is also extremely important.Many institutes
Known, when human body is bended over, spinal joint is opened, and upper body clothes can be pulled up, even if drawing oneself up again, clothes is also required to multiple manually
Position.Similarly, because being provided with shoulder belt in the present embodiment, when the human body back of a bow, due to the effect of shoulder belt, elastic suspenders brace by
Pull-up, because latissimus dorsi opens, does not influence detection, but after body is straight and upright, muscle normally bounces back, and elastic suspenders can be stayed
At top position, now internal surface electromyogram signal acquisition module just can not accurately fit with human body, cause subsequent detection
It is inaccurate.
For above mentioned problem, after chest cup is set, because chest cup area is larger, Resistance can be formed on front side of body
Domain, make band when human body is bended over will not upward sliding, after body is straight and upright, under the resilient force of band, elastic suspenders
Can together recover to original position with muscle of back, it is ensured that will not be misplaced when subsequently using, substantially increased under lasting use state
The bow-backed signal detection degree of accuracy.
Embodiment 3
With reference to Fig. 4, a kind of bow-backed alarm set based on surface myoelectric technology of the present embodiment, its abridged edition structure and implementation
Example 2 is identical, and its difference is：3 electrode slices are provided with the surface myoelectric detecting electrode 24, and 3 electrode slices are in
Inverted triangle is arranged, and the electrode slice of bottom forms a letter with two electrode slices at top in another surface myoelectric detecting electrode 24
Number acquisition channel.Vibrator as signal performing module, vibrator are located at the middle part of elastic suspenders 11, may be located on circular hole
Portion or bottom, can also be set around circular hole.
It is distributed according to human body latissimus dorsi, upside latissimus dorsi is more flourishing, therefore, electrode slice in surface myoelectric detecting electrode 24
Using inverted triangle structure distribution.When detecting electrode piece can accurately detect latissimus dorsi information, if human body lateral bending to the left or to the right,
The latissimus dorsi in corresponding right side or left side can be stretched, and can be judged as bow-backed signal, and vibrator can shake, and cause transmission mistake to carry
Awake signal.And the electrode slice of both sides forms dual signal acquisition channel in the present embodiment, both gather signal message comprehensively interaction, together
One channel information unfolds situation including back both sides latissimus dorsi, can effectively prevent erroneous judgement.
Embodiment 4
A kind of bow-backed alarm set based on surface myoelectric technology of the present embodiment, its abridged edition structure is same as Example 3,
Closer：Switch 22 is set on band 13, and the switch 22 can be located on chest cup 14, and switch 22 is electrically connected with power module 21
Connect, connecting line is located inside band 13, it is easy to which user manipulates.
Embodiment 5
Using the bow-backed alarm set in embodiment 1~4, the invention provides a kind of bow-backed based reminding method, with reference to Fig. 5,
Its process is：
1) user is worn by bow-backed alarm set, after pressing shift knob, startup power supply module, closing of circuit, system
Start working.
2) the surface myoelectric detecting electrode for being placed in back starts to gather the electromyographic signal of latissimus dorsi, when the action of wearer back
When, the electromyographic signal of latissimus dorsi can produce change, and then sending the signal to supporting preposition modulate circuit plate carries out signal
Make an uproar and enhanced processing；
3) and then signal is transferred to capture card, capture card is processed the signal treated by front end circuit, makes letter
Number it is changed into the digital electromyographic signal that can be recognized by computer；Digital electromyographic signal is sent to the processor, by feature extraction,
After the treatment of the program such as Feature Dimension Reduction and pattern-recognition, processor is bow-backed with non-hunchback using wavelet transformation and the identification of VPMCD algorithms
Two states；
4) when system judges bow-backed, processor sends execution information, signal performing module to signal performing module
Action, sends alerting signal.By taking vibrator as an example, processor send vibration to instruct to vibrator, and vibrating motor receives vibration and refers to
Vibration is produced after order, early warning is carried out to wearer, wearer answers straight and upright back after receiving the prompting.
Above-mentioned VPMCD methods are built upon the mode identification method on the basis of variable prediction model, in party's law theory, no
Correlation between generic middle characteristic variable is also different.In the pattern recognition problem of human body surface myoelectric signal, adopt
With one group of characteristic quantity X=[X1,X2,…,Xp] a kind of classification of description, in different gesture classifications, one of characteristic value XiReceive
Further feature value XjThe influence of (j ≠ i) is also different.That they exist each other is probably man-to-man relation X1=f (X2),
It is also likely to be one-to-many relation X1=f (X2,X3,…).In order to recognize different classes of motor pattern, it is necessary to using training
Sample Establishing can between expression characteristic variable internal relation Mathematical Modeling, i.e. variable prediction model (Variable
Predictive Model,VPM).Test sample is predicted by these forecast models again, and it is flat with every class predicated error
Square and minimum discriminant function is classified.
Above-mentioned processor is bow-backed with non-bow-backed two states using wavelet transformation and the identification of VPMCD algorithms, and its method is as follows：
S1, right lateral bend four kind waists action collecting samples curved to the straight back of the body, the back of a bow, left side, obtain pre- using VPMCD algorithms
Survey model VPMtraining；Forecast model VPMtrainingIt is the pre- program for first passing through test storage in system, as original
With type of action；
S2, electrode slice carry out sEMG signal acquisitions to waist action；
S3, the sEMG signals to gathering carry out three layers of wavelet decomposition using wavelet basis function, obtain the wavelet systems of each frequency range
Number.Shown in wavelet transformation implication formula such as formula (1)：
Wherein：f(t)∈L2(R), L2(R) it is the function space of quadractically integrable function composition on R.ψ (t) is mother wavelet or mother
Small echo, a is scale factor, and b is shift factor.
Again the signal is represented with the linear combination of different scale and different shifted wavelet bases；As shown in formula (2)：
Wherein, the coefficient of each single item is known as wavelet coefficient, AI(t)、DiT () represents I grades of low frequency component and height respectively
Frequency component, waI、wdiThe low-frequency wavelet coefficients and high-frequency wavelet coefficient of i-stage are represented respectively；
The wavelet coefficient modulus maximum of each frequency sub-band is used as characteristic vector after S4, extraction wavelet decomposition.So obtain every kind of
The eigenvalue matrix of classification, can be using the internal association between cross-correlation analysis method checking characteristic value during experiment；
S5, with the forecast model VPM for having trainedtrainingClassification and Identification, various types of backs are carried out to eigenvalue matrix
Action can be just determined by the data result of VPMCD graders.
It is bow-backed with non-bow-backed two states using wavelet transformation and the identification of VPMCD algorithms, have relative to other recognition methods
There is accuracy higher, as shown in fig. 6, the method sets up variable prediction model by the method for parameter Estimation, it is to avoid ANN knots
Structure, the select permeability of type and iterative process.In addition, in the selection of types of models and parameter, it depends on predicted value and reality
The minimum Prediction sum squares of actual value, so as to avoid the dependence to priori, more objectivity.Therefore, the method tool
There are more preferable VPMCD Training Capabilities and classification performance, be a kind of effective, reliable surface electromyogram signal pattern recognition method.
The present invention carries out signal acquisition using surface electromyogram signal acquisition module, and feature extraction and mould are carried out to the electric signal
Formula identification judges whether wearer is bow-backed, and accuracy in detection is high, Neng Gouji small by individual sex differernce and external environment influence
When, bow-backed prompting is carried out to user exactly.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case where the invention objective is not departed from, is designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of bow-backed alarm set based on surface myoelectric technology, including elastic suspenders (11) positioned at human body back and be located at
The band (13) of waist, it is characterised in that：Surface electromyogram signal acquisition module, signal transacting are provided with the elastic suspenders (11)
Module and signal performing module, the surface electromyogram signal acquisition module and signal performing module are electrically connected with signal processing module
Connect, surface electromyogram signal acquisition module distribution is in elastic suspenders (11), and correspondence human body latissimus dorsi region；The signal is performed
Module is used to produce vibration or auditory tone cues to the bow-backed information for detecting.
2. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 1, it is characterised in that：The bullet
Property brace (11) top leads to two shoulder belts (15), and the other end of shoulder belt (15) is connected with band (13).
3. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 2, it is characterised in that：The shoulder
Band (15) is with band (13) for integral type elastic webbing or by snapping fit attachment or being connected by VELCRO.
4. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 1 or 2 or 3, it is characterised in that：
The band (13) is provided with chest cup (14) at abdominal region, and chest cup (14) top is more than band with the distance between following
(13) width.
5. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 4, it is characterised in that：Described
Elastic suspenders (11) both sides are arc, form the wing band (12) positioned at elastic suspenders (11) both sides, the wing band (12) and human lumbar
Fit in portion.
6. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 1, it is characterised in that：The table
Facial muscle electrical signal collection module includes being symmetricly set on the surface myoelectric detecting electrode (24) of elastic suspenders (11) both sides, surface flesh
Electro-detection electrode (24) is with the contact surface fitted with human body back.
7. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 6, it is characterised in that：The table
Be provided with 3 electrode slices in facial muscle electro-detection electrode (24), and 3 electrode slices are arranged in inverted triangle, the electrode slice of bottom with it is another
Two electrode slices at top form a signal sampling channel in one surface myoelectric detecting electrode (24).
8. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 1 or 6, it is characterised in that：Institute
Stating signal processing module includes preposition modulate circuit plate, capture card and processor；The preposition modulate circuit plate is used for collection
Electromyographic signal carry out denoising and amplification, and the signal after treatment is sent in supporting capture card；
The capture card is used to for the simulation electromyographic signal for gathering to be converted into the digital electromyographic signal that processor can recognize that, and by number
Word electromyographic signal is sent to processor；
The processor carries out feature extraction to surface electromyogram signal, and then carries out pattern-recognition, judges whether user is bow-backed,
When hunchback is judged as, processor sends execution information, the action of signal performing module to signal performing module.
9. a kind of bow-backed alarm set based on surface myoelectric technology according to claim 8, it is characterised in that：The beam
Switch (22) is provided with band (13), the switch (22) is electrically connected with power module (21), it is internal that connecting line is located at band (13).
10. it is a kind of as based on surface myoelectric technology bow-backed based reminding method, using the alarm set as described in claim 1~9
Carry out bow-backed prompting, it is characterised in that its process is：
(1) user is worn by bow-backed alarm set, startup power supply module, closing of circuit, system starts；
(2) the surface myoelectric detecting electrode for being placed in back starts to gather the electromyographic signal of latissimus dorsi, when wearer back acts,
The electromyographic signal of latissimus dorsi can produce change, then send the signal to supporting preposition modulate circuit plate carry out signal denoising and
Enhanced processing；
(3) capture card is processed the signal treated by front end circuit, signal is changed into the number that can be recognized by computer
Word electromyographic signal；Digital electromyographic signal is sent to the processor, and system judges now whether wearer is bow-backed；
(4) when system judges bow-backed, processor sends execution information to signal performing module, and signal performing module is moved
Make, send alerting signal.
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| CN201611269997.6A CN106725466A (en) | 2016-12-31 | 2016-12-31 | A kind of bow-backed alarm set and based reminding method based on surface myoelectric technology |
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| CN110101393A (en) * | 2019-04-18 | 2019-08-09 | 浙江工业大学 | Flexible back's posture corrector tool |
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