CN207024063U - A kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination - Google Patents
A kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination Download PDFInfo
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Abstract
The utility model discloses a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination, and it includes enterocinesia monitoring signal acquisition module, gurgling sound processing module, voice signal output module, human-computer interaction module and power supply；Enterocinesia monitoring signal acquisition module is made up of banding bag abdomen harvester, it is responsible for gathering enterocinesia monitoring signal during multi-party bit length, data signal is then converted into, and when needing to aid in gurgling sound to produce, sends pulsed ultrasonic signal to imitate the effect of finger knocking；Gurgling sound processing module extracts gurgling sound from the enterocinesia monitoring signal collected, provides the frequency of occurrence of gurgling sound per minute；Voice signal output module plays the gurgling sound signals revivification after the processing of gurgling sound processing module into acoustical signal；Human-computer interaction module carries out manual control switch's machine, shows the result of gurgling sound processing module.The utility model make it that gurgling sound monitoring process is more intelligent, more safe and efficient.
Description
Technical field
It the utility model is related to sensor technology and voice process technology, and in particular to lifting gurgling sound discrimination
Active multiple spot enterocinesia monitoring device.
Background technology
Gurgling sound, when being enterocinesia, gas and liquid flow therewith in intestinal tube, produce a kind of interrupted grunt or gas mistake
The underwater sound.Intestines and stomach are just as " bottle " for being only installed with part water, if wherein thin liquid adds gas, along with gastrointestinal wall
The motion of itself（Gastrointestinal peristalsis）Gastric content can be caused to produce movement, just generate gurgling sound in this course.Human body
Enterocinesia typically with sex without too big relation, be probably one minute at 4 to 5 times or so, its frequency, the sound and tonal variations compared with
Greatly, it is postprandial frequent and obvious, it is sparse and faint during rest.The gurgling sound of normal person is usually difficult to feel, or even ear is also listened
Less than ear only is close into stomach wall or can just hear it with stethoscope.Its frequency range is 50-1000 hertz（Hz）,
Duration is 5-200 milliseconds（ms）.Gurgling sound is one of important physiological signal of human body, is the reflection of intestinal motility state.
Gurgling sound is an important content in clinical PE, is an important indicator for diagnosing some intestines problems.But by
Regular like that not like heart sound, lungs sound in gurgling sound, its aperiodicity and randomness is strong, and band is detected and handled to gurgling sound
Carry out very big difficulty.
It is normally different from the bowel movement under pathological state, it is consequently formed the gurgling sound of different characteristic.Human body suffers from some diseases
When sick, anomaly occurs in gurgling sound, and when such as there is abdominal pain diarrhea symptom, enterocinesia can significantly increase, and this is referred to as intestines
Ring sound enlivens, if number per minute, more than 10 times, referred to as gurgling sound is hyperfunction.The intestinal wall muscular strain of a variety of causes, intestines are compacted
Dynamic when weakening, gurgling sound can also weaken, tail off so that doctor just hears once for several minutes, claims hypoactive bowel sounds, sees senile
Constipation, peritonitis, electrolyte disturbance（Diagnostic value）, gastroenteritic power is low etc..Such as continue auscultation and do not hear gurgling sound in 3 to 5 minutes,
Emphasis auscultation Right Lower Abdomen is answered, and with finger tapping or scratches bullet belly still absent bowel sounds, referred to as gurgling sound disappears, and sees acute peritoneal
Scorching or paralytic ileus.Patient profiles can substantially be judged by the number of gurgling sound appearance per minute, but it is more careful
Pathological analysis also need to extract the different characteristic of gurgling sound and judged, this experience and professional knowledge to doctor requires ratio
It is higher.
Different gurgling sounds is correctly distinguished, important diagnostic message can be provided for clinic.At present, clinician is to pass through
Stethoscope carries out auscultation.Under normal circumstances, gurgling sound is per minute 4-5 times, and doctor is easy to hear.But some patients,
Gurgling sound more than minute just hears once that sometimes dozens of minutes also be can't hear in continuous 3-5, and this easily causes listening for doctor
Fatigue is examined, generation is failed to pinpoint a disease in diagnosis.The spies such as signal is weak, noise is strong, individual difference is big further, since gurgling sound has and randomness is strong
Point so that the auscultation time of each case greatly increases.Since gurgling sound is a kind of voice signal, can be gathered completely
Come, be converted into voice digital signal, recycle the method for data signal to handle.Patent " gurgling sound monitoring identifying system "（Application
Numbers 201410559667.5）The gurgling sound collected is just subjected to storage analysis, frequency spectrum point is carried out to the gurgling sound of storage in addition
Analysis extraction feature etc., to aid in diagnosis of the doctor to disease.Patent " analysis of portable medical gurgling sound, storage, play system "
（Application number 201410559667.5）Also the gurgling sound collected is stored, then played back, but what is played back is still
The monitoring signals directly gathered, be the monitoring time how long, the signal also how long, rather than direct gurgling sound.It can be seen that facing
Judgement of the doctor to gurgling sound is still based on auscultation on bed, if can be stored, identified and processing makes by the gurgling sound collected
It is converted into suitable form and heard by human ear is highly sensitive, it will shortens the auscultation time, improves auscultation efficiency.
Traditional gurgling sound monitoring method is to allow the doctor of gurgling sound diagnosis correlation experience to be carried out greatly to it with stethoscope
The auscultation of about 10-20 minutes, stethoscope are mainly made up of chest piece, sebific duct and ear piece.Chest piece amplifies borborygmus sound collecting, passes through
Sebific duct is delivered to ear piece and heard by human ear.Doctor need to directly contact patient, each by the gurgling sound monitored in auscultated results
Whether item characteristic index is normal to judge patient's stomach and intestine aspect.The stethoscope clinically used at present has the shortcomings that many：It is first
First, pickup and transmission of the common stethoscope to sound has distortion, distorts and have lost many valuable acoustic informations；In addition,
Due to the hearing difference between human ear, the auscultation effect of different doctors is caused also to be not quite similar；Further, using stethoscope often according to
It is strong by the micro-judgment of doctor, subjectivity.
Making a general survey of current auscultation method has following place to improve：
（1）Doctor is generally required using auscultation with stethoscope and observes 10-20 minutes, but the duration of each borborygmus sound is only
Hundreds of milliseconds, therefore hundreds of milliseconds of borborygmus sound can be extracted inside observation time listened for doctor completely.Traditional
Auscultation needs doctor to listen to the monitoring sounds of patient's 10-20 minutes one by one（Monitoring signals）, excessively prolonged auscultation easily makes doctor
Fatigue, and in the case where patient is more, not only required doctor's resource is larger, and patient's stand-by period can be made long.And
And artificial progress gurgling sound monitoring, easily cause subjective error in judgement.
（2）Auscultation method needs the contact between doctor and patient closely, and pathogeny may be caused to travel to doctor from patient
It is raw.
（3）Gurgling sound signal intensity is low, and noise is big, therefore needs to be accurately placed at the most strong position of gurgling sound in gatherer process
Put.But because individual difference is big, different people borborygmus sound signal most strong different at the time of possibly be present at different positions
Put.Traditional gurgling sound harvester is only manually to move chest piece, single-point acquiring, easily misses gurgling sound, or collect
Signal it is weaker.And the gurgling sound of different zones is different, is found after handling the signal that recorded, the signal of middle lower abdomen
Enriched than other regions, and the signal of left lower quadrant then has higher frequency.
（4）The frequency range of borborygmus sound signal is 50-1000Hz, and human ear is most sensitive to 3kHz-5kHz sound, amplitude very little
Voice signal can be heard by human ear, and in low frequency range（Such as less than 800Hz）, sensitivity of the human ear to sound is much lower,
Masking effect easily occurs.One weaker sound（Masked sound）Auditory perception by another stronger sound（Shelter sound）
Influence, occur " masking effect " of human ear.Particularly when loudness level is smaller, low-frequency sound sensitivity decrease is more violent.
That is this frequency range major part frequency range of gurgling sound be not suitable for directly listen mode is distinguished.
（5）Current gurgling sound signal acquisition is all to go to gather by auscultation with stethoscope or some other harvester,
Belong to and passively gather, but according to analysis above, the diagnosis to be disappeared to gurgling sound, it is necessary to lasting auscultation 3-5 minutes not
Hear gurgling sound and then with finger tapping or scratch bullet belly, if now still absent bowel sounds, just may be considered gurgling sound and disappear
Lose.Therefore, in order to reduce manual intervention, it may be considered that actively add a pumping signal in the case, to stimulate enteron aisle.
Utility model content
For being grown at present in gurgling sound monitoring and some such as auscultation times existing for diagnostic field, possibility is contacted with sufferer
Pathogeny is caused to be propagated, collection position is single, and acquisition geometry is passive, and the gurgling sound of collection is also difficult to recognize different spies even if playback
The problems such as sign, the utility model are directed to a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination, utilized
Multipoint collecting device does not collect the feelings of gurgling sound in enteron aisle different parts while listening for enterocinesia signal, and in special time
Actively to extrinsic motivation to imitate finger tapping to stimulate enteron aisle under condition；Useful gurgling sound, warp are extracted inside from monitoring signal
Cross digital signal processing method to the sensitive frequency range of human ear while to go to shelter in frequency domain expansion, become suitable for what human ear was clearly recognized
Voice signal so that gurgling sound monitoring process is more intelligent, and doctor's auscultation gurgling sound is more objective, the time is shorter, more efficient, more
Safety.
The utility model is achieved through the following technical solutions.
A kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination, including enterocinesia monitoring signal collection mould
Block；Enterocinesia monitoring signal acquisition module is made up of the harvester of banding bag abdomen, is responsible for gathering enterocinesia prison during multi-party bit length
Signal is listened, is then converted into data signal, and when needing to aid in gurgling sound to produce, send pulsed ultrasonic signal with mould
The effect of imitative finger knocking.
Further, the waistband that the harvester of banding bag abdomen is formed using breathable rubber and Lycra cotton, it is embedding on waistband
Sound collection sensor array and acoustic emission probe；Human abdomen is divided into several regions, the sound collection being embedded with waistband passes
Sensor array corresponds respectively to each region, i.e., each sound collection sensor in region, so as to fixed sound gather sensor and
From multiple angular acceptances to enterocinesia monitoring signal, more comprehensive collection result is obtained；On the right side of banding bag abdomen harvester
Position at inferior horn i.e. corresponding to Right Lower Abdomen is provided with an acoustic emission probe, if enterocinesia monitoring signal acquisition module
Sound gathers sensor array continuous collecting 3-5 minutes, the enterocinesia monitoring signal that each sensor obtains, mould is handled in gurgling sound
Gurgling sound is not all extracted in block, one pulse of acoustic emission probe to harvester is sent letter by gurgling sound processing module
Number, acoustic emission probe sends ultrasonic wave to Right Lower Abdomen, stimulates Right Lower Abdomen to imitate the effect of finger knocking with this, aids in gurgling sound
Produce；If still not collecting gurgling sound under multiple stimulate, it is judged as that gurgling sound disappears, avoids artificial judgment and do
In advance.
Further, in addition to gurgling sound processing module, voice signal output module, human-computer interaction module and power supply, intestines
Ring sound processing module extracts gurgling sound from the enterocinesia monitoring signal collected, provides the frequency of occurrence of gurgling sound per minute,
Then using masking frequency domain expansion technology is gone, borborygmus sound signal is expanded into the sensitive frequency range of human ear from 50-1000Hz, by distance
Crossing near spectral line and pulling open prevents occlusion；Voice signal output module by gurgling sound processing module processing after gurgling sound
Signals revivification plays into acoustical signal；Human-computer interaction module carries out manual control switch's machine, shows the processing of gurgling sound processing module
As a result, result includes having within one minute gurgling sound several times and display signal waveform；Power supply gathers for enterocinesia monitoring signal
Module, gurgling sound processing module, voice signal output module, human-computer interaction module provide electric power.
Further, enterocinesia monitoring signal acquisition module, gurgling sound processing module, voice signal output module, man-machine
Interactive module and power supply are integrated into the portable gurgling sound auscultation apparatus of unit, i.e., as detection terminal.
Further, in addition to letter is monitored in wireless transport module, background processor and backstage human-computer interaction module, enterocinesia
Enterocinesia monitoring signal is gathered during the multi-party bit length of number acquisition module, is sent to by wireless transport module at background processor
Reason；Backstage human-computer interaction module is shown to signal and result；Gurgling sound processing module and voice signal output module
Background processor can also be placed on, the gurgling sound of enterocinesia monitoring signal extraction is gone after sheltering frequency domain expansion technical finesse to carry out
Audio playback exports.
Further, each sensor in the sound collection sensor array is by film sound receiving transducer, low noise
Sound operational amplification circuit and A/D converter are formed；It is thin when enterocinesia monitoring signal transfer voice is to film sound receiving transducer
The film of film sound receiving transducer can together vibrate with sound, and film has an electrode, and film is when vibration
Electrode can be contacted, time of contact length is with loudness of the amplitude of vibration about i.e. corresponding sound, and this completes voice signal
To the conversion of electric signal；Low noise operational amplifying circuit is amplified processing to the electric signal, and then A/D converter is simulation electricity
Signal is converted into digital electric signal, completes signal acquisition.
Further, described voice signal output module is made up of D/A converting circuit, amplifying circuit and microphone, will
The data signal of gurgling sound in short-term after gurgling sound processing module is handled is changed into analog signal by D/A converting circuit, so
Microphone is passed to after amplifying circuit amplifies afterwards to play out.
Compared with prior art, the utility model has advantages below and technique effect：
（1）The utility model uses banding bag abdomen harvester, multipoint collecting device enteron aisle different parts while listening for
Enterocinesia signal, belly is divided into several regions, there are sensor, Multi-angle omnibearing collection borborygmus message in each region
Number, gurgling sound is avoided missing, or the signal collected is weaker.And a sound emission is provided with position corresponding to Right Lower Abdomen and is visited
Head, if in the case where special time does not collect gurgling sound actively to extrinsic motivation to imitate finger tapping to stimulate intestines
Road, avoid artificial judgment and reduce manual intervention.
（2）The utility model is detected using the enterocinesia monitoring device to patient, and patient sees a doctor and can dressed at once,
After the completion of detection, doctor can directly listen to hundreds of milliseconds of gurgling sound required for oneself and be directly viewable original and warp
The waveform crossed after processing so that doctor shortens the auscultation gurgling sound time, reduces the stand-by period of doctor and patient.
（3）After the utility model setting lasting auscultation 3-5 minutes do not hear gurgling sound, launched using acoustic emission probe super
Sound wave simulates finger tapping belly, to aid in producing gurgling sound.A period of time is waited for peacefully again in this case, if not being collected into also
Gurgling sound, just it is judged as the disappearance of gurgling sound, improves the objectivity for judging gurgling sound Disappearance Scenarios.
（4）The contact of doctor with patient's progress closely is not needed using the gurgling sound monitoring device, avoids pathogeny
Infect.And can also be observed on the basis of auscultation in short-term gurgling sound directly gather it is long when monitor enterocinesia signal, extraction
Gurgling sound waveform carrys out auxiliary judgment with the digital signal waveform of gurgling sound in short-term after treatment, avoids each doctor's audible difference
It is different and cause subjective error in judgement.
Brief description of the drawings
Fig. 1 is the structural representation for the active multiple spot enterocinesia monitoring device single cpu mode that gurgling sound discrimination is lifted in example
Figure.
Fig. 2 is the knot for the active multiple spot enterocinesia monitoring device terminal/server pattern that gurgling sound discrimination is risen in example
Structure schematic diagram.
Fig. 3 is the schematic diagram for the active multiple spot enterocinesia monitoring device single cpu mode that gurgling sound discrimination is lifted in example.
Fig. 4 is the principle schematic of gurgling sound processing module extraction gurgling sound in example.
Fig. 5 is that gurgling sound processing module goes to shelter the principle schematic of frequency domain expansion in example.
Fig. 6 is the workflow diagram for the active multiple spot enterocinesia monitoring method that gurgling sound discrimination is lifted in example.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings, but implementation of the present utility model
Not limited to this, it is noted that key of the present utility model is the technical scheme proposed to structure, it is related to the skill of signal transacting
Art is that those skilled in the art are referred to prior art realization.
As shown in figure 1, it is the active multiple spot enterocinesia monitoring device of the lifting gurgling sound discrimination described in the present embodiment
Structural representation.The device be divided into enterocinesia monitoring signal acquisition module, gurgling sound processing module, voice signal output module,
Human-computer interaction module and power supply.Sound collection sensor array in enterocinesia monitoring signal acquisition module monitors the intestines that belly is sent
Wriggling sound, deliver to the gurgling sound extraction unit of gurgling sound processing module.The gurgling sound extraction unit root of gurgling sound processing module
Gurgling sound is extracted according to certain judgment criterion, gurgling sound frequency computing unit is responsible for counting frequency of occurrence.If when certain
Between（3-5 minutes）Result is 0 gurgling sound, then gives impulse generating unit one control signal, and impulse generating unit produces
Certain pulses signal is to acoustic emission probe.The gurgling sound extraction unit of gurgling sound processing module has extracted gurgling sound, then by intestines
After ring audio time computing unit has counted frequency of occurrence, give masking frequency domain expansion unit and it is handled.Last borborygmus
Sound extraction unit, gurgling sound frequency computing unit and go shelter frequency domain expansion unit three respective result is submitted to man-machine friendship
Mutual module is shown, is gone masking frequency domain expansion unit to give the borborygmus sound signal after processing to voice signal output module and is broadcast
Put.Power supply provides electric energy for all modules.
As shown in Fig. 2 it is the active multiple spot enterocinesia monitoring device end of the lifting gurgling sound discrimination described in the present embodiment
The structural representation of end/server mode.Essentially identical described in relation and Fig. 1 between unit, general structure is will be upper
The modules stated are divided into two parts and form terminal and server end：Enterocinesia monitoring signal acquisition module, plus power supply and
Wireless transport module forms terminal；Remaining module adds wireless transport module and electric power generating composition server end, compositing terminal kimonos
The mode of operation at business device end.
As shown in figure 3, it is the active multiple spot enterocinesia monitoring device list of the lifting gurgling sound discrimination described in the present embodiment
Machine pattern diagram.Enterocinesia monitoring signal acquisition module is a banding bag abdomen harvester, and outer image is on the market by breathing freely
The waistband of the composition such as rubber and Lycra cotton, pliability is good, and belly fitting is close, by VELCRO 301 by it with similar waist
The form of band is fixed on belly.Embedded with sound collection sensor array 302 and acoustic emission probe 303 on the harvester.The implementation
Sound collection sensor array is divided into 5 regions according to human abdomen in example, and there are 2 sound collection sensors in each region, so as to
Fix and from multiple angular acceptance enterocinesia monitoring signals, obtain more comprehensive collection result.In banding bag abdomen harvester
The lower right corner（For being put in Right Lower Abdomen）There is provided an acoustic emission probe, when not detecting gurgling sound in specified time,
Acoustic emission probe sends ultrasonic wave to Right Lower Abdomen, stimulates Right Lower Abdomen to imitate the effect of finger knocking with this, auxiliary produces gurgling sound.
The enterocinesia monitoring signal that enterocinesia monitoring signal acquisition module is responsible for gathering during by multi-party bit length is converted into data signal, gives
Gurgling sound processing module 304 is handled, gurgling sound processing module from collect it is long when enterocinesia monitoring signal in extract intestines
Ring sound, then uses and goes to shelter the signal that frequency domain expansion technology converts the signal to not shelter, be adapted to human auditory system scope, obtains
Result pass to human-computer interaction module 305, the result of simple gurgling sound processing module is shown by human-computer interaction module,
As having within one minute gurgling sound several times, while the gurgling sound waveform before display processing and after processing.Voice signal output module 306 will
The gurgling sound signals revivification handled well then can carry out auscultation into acoustical signal, doctor by wearing the earphone 307 shown in Fig. 3.
As shown in figure 4, it is the principle schematic of the gurgling sound processing module extraction gurgling sound described in the present embodiment.Can letter
Single two threshold values of setting（Initiation threshold A0, terminate energy cut-off value difference C0）To judge the starting and ending of gurgling sound.Gurgling sound carries
Unit is taken to pass through initiation threshold A set in advance0To judge, when detecting that signal exceedes gurgling sound initiation threshold A0, then it is assumed that it is
The starting of gurgling sound.The signal energy sum ∑ X after gurgling sound starting is asked for after beginning in real time2(n) and judged, if currently
Energy ∑ X2(n) difference with last moment energy is less than the end energy cut-off value difference C of setting0When, then it is assumed that it is cutting for gurgling sound
Only.Gurgling sound is extracted according to above principle.
As shown in figure 5, it is that gurgling sound processing module described in the present embodiment goes to shelter the principle schematic of frequency domain expansion.Frequently
A forte in domain can shelter the concurrently off beat near sounding, and off beat is nearer from forte, typically more easy to be masked；
Conversely, the off beat from forte farther out be not easy it is masked.For example, another 900Hz of-individual 1000Hz signal to noise ratio pitch
18dB, then 900Hz sound is by by 1000Hz sound masking.And if 1000Hz signal to noise ratio is from its another 1800Hz farther out sound
High 18dB, then the two sounds are incited somebody to action be heard by human ear simultaneously.Therefore the sound of each frequency has the sound of masking regional, in masking regional
If loudness of a sound is weaker, it will be sheltered by the sound of this frequency, but sound frequency and masking regional are not linear relationships, are from perception
Come up unified metric sound frequency, introduces the concept of " critical band ".Generally, it is considered that have 24 in the range of 20Hz to 16kHz
Individual critical band, likeness of the deceased in same critical band band are easily shielded, and the sound in different critical frequency band band will not be masked.Low
Frequency area（Such as less than 800Hz）, because sensitivity of the human ear to low-frequency sound is much lower, it is easier to masking effect occurs.Normally
The frequency range of gurgling sound is 50 ~ 1000Hz, and the identification frequency domain of human ear is between 20Hz ~ 14KHz（In view of doctor with
The frequency range that age increases identification reduces, therefore ear recognition value range when taking 40 years old）, but to 3KHz to 5KHz frequency
It is most sensitive.In order that obtain doctor is collected into the information that gurgling sound is contained more fully hereinafter, the present embodiment goes to shelter frequency domain expansion
Give full play to one's skill art, with a mapping function by 50Hz ~ 1000Hz mapped extensions to 50Hz ~ 5KHz, such as select exponential type mapping function, high-order
Polynomial map function etc., which type of mapping function is selected to go masking effect optimal, being that the distinguishable degree of doctor is optimal is
Criterion.Specifically chosen is with being training sample with the gurgling sound of different characteristic, using different mapping functions cover
Frequency domain expansion is covered, the gurgling sound after processing gives doctor's auscultation and classification again, point of the result of classification closer to initial different characteristic
Class, and more features can be segmented again, such mapping function is optimal.An exponential function is illustrated in figure as mapping letter
Number, it can be seen that mapped extension to 50Hz ~ 5KHz, and allows two spectral lines closer to the distance to exist to 50Hz ~ 1000Hz frequency one by one
Mapping is spaced out later, and in different critical bands, masking effect is eliminated with this.
As a kind of example, described gurgling sound processing module includes gurgling sound extraction unit, the gurgling sound frequency calculates list
Member, go to shelter frequency domain expansion unit and impulse generating unit, pass through single-chip microcomputer or digital signal processor（DSP）Next pair of programming
The enterocinesia monitoring signal extraction gurgling sound and carry out sheltering frequency domain expansion processing that sound collection sensor array obtains, are obtained everywhere
Gurgling sound data signal in short-term after reason.The enterocinesia that the gurgling sound extraction unit obtains from sound collection sensor array successively
Monitoring signal extracts gurgling sound.Letter is monitored in the complete enterocinesia that the gurgling sound frequency computing unit obtains according to each sensor
Number gurgling sound extracted, the frequency that gurgling sound per minute occurs is calculated, human-computer interaction module is provided to and is shown
Show, if it is all 0 to calculate its gurgling sound frequency within 3-5 minutes simultaneously, is not hear gurgling sound, then gives pulses generation list
A first control signal, it is set to produce pulse to aid in the generation of gurgling sound.It is described to go to shelter frequency domain expansion unit by gurgling sound
Do fast Fourier computing to be transformed on frequency domain from time domain, then carry out frequency spectrum mapped extension, mapped extension to the sensitive frequency of human ear
Section, then carries out masking and handles, the gurgling sound data signal in short-term after being handled.Because frequency spectrum is extended, according to
Time-frequency uncertainty principle, it is known that the signal after spread spectrum is compressed in time domain, is doctor when playback again
It is raw listen gurgling sound is shorter, while change to the sensitive frequency range of human ear and carried out going masking to handle, doctor, which can listen, must become apparent from and can
It is higher to differentiate discrimination.The impulse generating unit produces certain pulses signal according to default pulse parameter and visited to sound emission
Head, acoustic emission probe send corresponding ultrasonic wave to stimulate Right Lower Abdomen to simulate with this effect of artificial knocking.
As shown in fig. 6, it is the single work of the active multiple spot enterocinesia monitoring device of the lifting discrimination described in the present embodiment
Make flow chart.It carries out gurgling sound collection to patient and comprised the following steps with the process monitored：
（1）Start working, gather enterocinesia monitoring signal.Correct fixed banding bag abdomen harvester, in man-machine interaction mould
Power-on at block, enterocinesia monitoring signal acquisition module work about 10 minutes, gather the enterocinesia monitoring signal of patient,
Gathered during collection while handling, acquired enterocinesia monitoring signal is first sent to the progress of gurgling sound processing module
Processing.
（2）Extract gurgling sound.Gurgling sound extraction unit in gurgling sound processing module obtains from sound collection sensor array
Enterocinesia monitoring signal extraction gurgling sound.Extraction is by initiation threshold A set in advance0To judge, when detecting signal
More than gurgling sound initiation threshold A0, then it is assumed that it is the starting of gurgling sound.The signal energy after gurgling sound starting is asked for after beginning in real time
Measure sum ∑ X2(n) and judged, if present energy ∑ X2(n) difference with last moment energy is less than the end energy of setting
Measure threshold difference C0When, then it is assumed that it is the cut-off of gurgling sound.
（3）Calculate the frequency of gurgling sound appearance per minute.Letter is monitored in the complete enterocinesia for having analyzed the acquisition of some sensor
Number, the gurgling sound that the complete enterocinesia monitoring signal that gurgling sound frequency computing unit obtains according to each sensor extracts, meter
The frequency that gurgling sound per minute occurs is calculated, human-computer interaction module is provided to and is shown.
（4）Judge whether to need the generation for aiding in gurgling sound.If not extracting gurgling sound in gurgling sound processing module,
That is it is all 0 that the gurgling sound frequency computing unit of gurgling sound processing module calculates its gurgling sound frequency within 3-5 minutes, then is not
Hear gurgling sound.Now gurgling sound frequency computing unit gives impulse generating unit one control signal, impulse generating unit according to
Default pulse parameter produces certain pulses signal to acoustic emission probe, and acoustic emission probe sends ultrasonic wave to Right Lower Abdomen, stimulates
Right Lower Abdomen imitates the effect of finger knocking with this, aids in the generation of gurgling sound.If still do not collect intestines under multiple stimulate
Ring sound, then is judged as that gurgling sound disappears.
（5）Spectrum analysis is carried out to gurgling sound.Gurgling sound processing module goes masking frequency domain expansion unit to do gurgling sound soon
Fast Fourier's computing is transformed into frequency domain from time domain.
（6）Mapped extension is carried out to gurgling sound and goes masking to handle.Gurgling sound carries out mapped extension from frequency spectrum, and mapping is expanded
The sensitive frequency range of human ear is opened up, while has carried out going masking to handle.
（7）The data signal of gurgling sound in short-term after processing is delivered to voice signal output module, doctor is played to and listens.
（8）As a result show.Human-computer interaction module shows the result of simple gurgling sound processing module, such as has within one minute
Gurgling sound several times；Show that each sensor of enterocinesia monitoring signal acquisition module obtains it is complete long when enterocinesia monitor letter
Number, and the data signal of gurgling sound in short-term etc. after the processing of gurgling sound processing module.
（9）Diagnosis terminates, and closes power supply.
Above-described embodiment is the preferable embodiment of the utility model, but embodiment of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace
Generation, combination, simplify, should be equivalent substitute mode, be included in the scope of protection of the utility model.
Claims (6)
1. a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination, it is characterised in that monitor and believe including enterocinesia
Number acquisition module；Enterocinesia monitoring signal acquisition module is made up of the harvester of banding bag abdomen, is responsible for gathering during multi-party bit length
Enterocinesia monitoring signal, data signal is then converted into, and when needing to aid in gurgling sound to produce, sends impulse ultrasound
Signal is to imitate the effect of finger knocking；The waistband that the harvester of banding bag abdomen is formed using breathable rubber and Lycra cotton,
Embedded with sound collection sensor array and acoustic emission probe on waistband；Human abdomen is divided into several regions, is embedded with waistband
Sound collection sensor array corresponds respectively to each region, i.e., each sound collection sensor in region, so that fixed sound gathers
Sensor and from multiple angular acceptances to enterocinesia monitoring signal, obtains more comprehensive collection result；Gathered in banding bag abdomen
Position at the lower right corner of device i.e. corresponding to Right Lower Abdomen is provided with an acoustic emission probe, if enterocinesia monitoring signal is adopted
Collect the sound collection sensor array continuous collecting 3-5 minutes of module, the enterocinesia monitoring signal that each sensor obtains, in borborygmus
All do not extract gurgling sound in sound processing module, gurgling sound processing module is by one pulse of acoustic emission probe to harvester
Signal is sent, acoustic emission probe is sent ultrasonic wave to Right Lower Abdomen, stimulates Right Lower Abdomen to be imitated the effect of finger knocking with this, aid in intestines
The generation of ring sound；If still not collecting gurgling sound under multiple stimulate, it is judged as that gurgling sound disappears, avoids artificial judgment
And intervention.
2. a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination according to claim 1, its feature
Be also to include gurgling sound processing module, voice signal output module, human-computer interaction module and power supply, gurgling sound processing module from
Gurgling sound is extracted in the enterocinesia monitoring signal collected, provides the frequency of occurrence of gurgling sound per minute, then uses and goes to shelter
Frequency domain expansion technology, borborygmus sound signal is expanded into the sensitive frequency range of human ear from 50-1000Hz, the spectral line of hypotelorism is pulled open
Prevent occlusion；Voice signal output module by gurgling sound processing module processing after gurgling sound signals revivification Cheng Shengxin
Number play；Human-computer interaction module carries out manual control switch's machine, shows the result of gurgling sound processing module, result bag
Including has gurgling sound several times and display signal waveform for one minute；Power supply is enterocinesia monitoring signal acquisition module, gurgling sound processing
Module, voice signal output module, human-computer interaction module provide electric power.
3. a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination according to claim 1, its feature
It is enterocinesia monitoring signal acquisition module, gurgling sound processing module, voice signal output module, human-computer interaction module and power supply
The portable gurgling sound auscultation apparatus of unit is integrated into, i.e., as detection terminal.
4. a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination according to claim 3, its feature
It is also to include wireless transport module, background processor and backstage human-computer interaction module, enterocinesia monitoring signal acquisition module is more
Enterocinesia monitoring signal is gathered when orientation is long, background processor is sent to by wireless transport module and handled；It is man-machine from the background
Interactive module is shown to signal and result；After gurgling sound processing module and voice signal output module can also be placed on
Platform processor, go progress audio playback after sheltering frequency domain expansion technical finesse defeated the gurgling sound of enterocinesia monitoring signal extraction
Go out.
5. a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination according to claim 1, its feature
Each sensor in sensor array is gathered in the sound is by film sound receiving transducer, low noise operational amplifying circuit
Formed with A/D converter；When enterocinesia monitoring signal transfer voice is to film sound receiving transducer, film sound receiving transducer
Film can together be vibrated with sound, and film has an electrode, and film can contact electrode when vibration, contact
Time length is with loudness of the amplitude of vibration about i.e. corresponding sound, and this completes the conversion of voice signal to electric signal；
Low noise operational amplifying circuit is amplified processing to the electric signal, and then analog electrical signal is converted into numeral by A/D converter
Electric signal, complete signal acquisition.
6. a kind of active multiple spot enterocinesia monitoring device for lifting gurgling sound discrimination according to claim 2, its feature
It is that described voice signal output module is made up of D/A converting circuit, amplifying circuit and microphone, gurgling sound is handled into mould
The data signal of gurgling sound in short-term after block is handled is changed into analog signal by D/A converting circuit, then by amplification electricity
Microphone is passed to after the amplification of road to play out.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110037733A (en) * | 2019-04-01 | 2019-07-23 | 四川大学华西医院 | A kind of Portable program control monitors system without wire body sound |
| CN111407307A (en) * | 2020-04-17 | 2020-07-14 | 华中科技大学同济医学院附属协和医院 | Electric stimulation massage device and electric stimulation massage method for enterokinesia |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110037733A (en) * | 2019-04-01 | 2019-07-23 | 四川大学华西医院 | A kind of Portable program control monitors system without wire body sound |
| CN110037733B (en) * | 2019-04-01 | 2024-04-02 | 四川大学华西医院 | Portable program-controlled wireless body sound monitoring system |
| CN111407307A (en) * | 2020-04-17 | 2020-07-14 | 华中科技大学同济医学院附属协和医院 | Electric stimulation massage device and electric stimulation massage method for enterokinesia |
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