CN101146482A - Visual stethoscope - Google Patents
Visual stethoscope Download PDFInfo
- Publication number
- CN101146482A CN101146482A CNA2006800095024A CN200680009502A CN101146482A CN 101146482 A CN101146482 A CN 101146482A CN A2006800095024 A CNA2006800095024 A CN A2006800095024A CN 200680009502 A CN200680009502 A CN 200680009502A CN 101146482 A CN101146482 A CN 101146482A
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- output
- sound
- visual stethoscope
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/14—Greenhouses
- A01G9/1469—Greenhouses with double or multiple walls
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/109—Outdoor lighting of gardens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Botany (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Disclosed herein is a visual stethoscope in which objective diagnosis is possible because a patient and his or her guardian can listen to thoracic and heart sounds also can see the waveform of the data at the time of diagnosis, and reliable diagnosis is possible because clinical data and a medical prescription based on a thoracic and heart sound database and diagnostic software are generated. The visual stethoscope includes a sound collector, a controller and an output unit. The sound collector collects biomedical signals generated from a human body and converts them into electric sound signals. The controller receives and amplifies thoracic and heart sounds output from the sound collector, performs filtering with respect to a predetermined frequency, or performs data conversion and processing, and outputs them. The output unit receives signals output from the controller, and outputs the signals as sound, or diagnoses, analyzes and displays the signals using a predetermined algorithm.
Description
Technical field
The present invention relates to a kind of visual stethoscope, specifically, relate to and a kind ofly can amplify and filter received thoracic cavity and heart sounds, and utilization biomedicine signals parser maybe can be exported the visual stethoscope of thoracic cavity and heart sounds Wave data with listening to by USB (universal serial bus) (USB) transmission path terminal stores.
Background technology
Traditional simulation stethoscope of Laennec invention in 1819 comprises that a chest piece part, an ear piece part are connected the conducting tube of chest piece part and ear piece part with one.
So far, above-mentioned mechanical type stethoscope is extensive use of on each medical domain, but begins to be converted to electronic stethoscope (using the simulation amplifying technique) recently.
The above-mentioned stethoscope of life-time service can cause diagnostician's dysaudia and ear pain disease, doctor's ear pain disease occurs and cause diagnosis inconvenience even mistaken diagnosis when diagnosis.
In addition, traditional simulation stethoscope and nearest electronic stethoscope have only the doctor to hear when listening to the sound of thoracic cavity and heart, owing to doctor's subjective judgment causes the probability of mistaken diagnosis higher relatively, patient and guardian can not hear sound by stethoscope, thereby cause unilateral diagnosis.
In addition, because their analog form, traditional simulation stethoscope can not be stored in diagnostic data among the data base, thereby has the problem of impossible remote transmission.
Summary of the invention
(1) technical problem
Therefore, in order to overcome the problems referred to above that occur in the prior art, the applicant makes the present invention.One of purpose of the present invention provides a kind of visual stethoscope that can store and play the biomedicine signals that receives by the USB transmission path.
Another object of the present invention provides and a kind ofly can convert diagnostic data to digital signal and be stored among the data base, but the visual stethoscope of remote transmission diagnostic data.
A further object of the present invention provides a kind ofly can make the visual stethoscope of objective reliable diagnosis according to thoracic cavity and heart sounds data base and diagnostic software in when diagnosis.
Another purpose of the present invention provides and a kind ofly can overcome in the past that stethoscope causes the visual stethoscope of doctor's dysaudia and ear pain disease.
Last purpose of the present invention provides a kind of visual stethoscope, in the cavity in collection head above the collection hole mike is installed, mike periphery with the sound insulation rubber components around preventing by the loss of sound that sound collecting hole is gathered and the inflow of noise, thereby clear more thoracic cavity and the heart sounds of gathering exactly.
(2) technical scheme
For achieving the above object, the invention provides a kind of visual stethoscope, it comprises the biomedicine signals of collection human body generation and they is converted to the pick up of electric signal, receive and amplify the thoracic cavity of pick up transmission and heart sounds and filter or carry out data transaction and processing and the controller of their output with receive the signal of controller output and this signal is output as sound or uses certain algorithm to diagnose, analyze and show the output unit of this signal with the frequency of demarcating.
Controller comprises first amplifying unit of the electric signal that is used to amplify pick up output; Be used for filtering the ultralow bandpass filter of demarcating the frequency band signal from the electric signal of its amplification of passing through; Be used to amplify second amplifying unit from the biomedicine signals of ultralow bandpass filter output; And be used for only making the audio unit of the biomedicine signals characteristic frequency segment signal of amplification by predetermined filters.
Output unit is the voice output unit that receives the signal of audio unit output and convert acoustical signal to.
Audio unit comprises and is used for detecting from the signal deteching circuit of the thoracic cavity of second amplifying unit and heart sounds and is used for the low pass filter of removing noise from the signal certain frequency segment signal of signal deteching circuit by filtering.
As selection, controller comprises first amplifying unit that is used to amplify from the electric signal of pick up output; Be used for filtering the super low pass filter that the electric signal of amplification is demarcated the frequency band signal; Be used to transmit signal inputting interface by the biomedicine signals of ultralow bandpass filter output; Be used to keep or the biomedicine signals of control signal inputting interface output is in automatic gain control unit near the primary signal state; The sampling keeping unit of sampling and maintenance automatic gain control unit output signal; The analog signal conversion of sampling or maintenance is become analog to digital (A/D) converting unit of digital signal; Reception by A/D converting unit output signal and carry out coding or the digital signal processing unit of decoding function and compression or decompressing function; Signal is passed to USB (universal serial bus) (USB) the transmission path terminal of outside output unit from digital signal processing unit.
Output unit is the computer that is connected in the USB transmission path terminal of controller, receives the signal by the output of USB transmission path terminal and uses pre-defined algorithm to diagnose and analyze.
At last, controller comprises first amplifying unit of the electric signal that is used to amplify pick up output; Filter the ultralow bandpass filter of demarcating the frequency band signal in the electric signal that amplifies; Transmit the signal inputting interface of the biomedicine signals of ultralow bandpass filter output; The biomedicine signals of maintenance or the output of control signal inputting interface is in the automatic gain control unit near the primary signal state; Sampling also keeps from the sampling keeping unit of the signal of automatic gain control unit output; Is the analog signal conversion of sampling and maintenance the A/D converting unit of digital signal; Receive A/D converting unit output signal and carry out coding or the digital signal processing unit of decoding function and compression or decompressing function; Digital-to-analog (D/A) converting unit that the conversion of signals that digital signal processing unit is exported becomes analogue signal and their are exported; And control is from the signal intensity of D/A converting unit and signal is exported to the semaphore control unit of outside output unit.
(3) beneficial effect
Therefore, according to visual stethoscope collection of biological medical signals of the present invention (thoracic cavity and heart sounds), and by using biomedicine signals diagnotor, the thoracic cavity of pick up being exported by USB transmission path terminal, with liquid crystal display and earphone or speaker and heart sounds is visual maybe can hear.In addition, visual stethoscope utilization biomedicine signals diagnosis algorithm saves as numerical data to thoracic cavity and heart sounds signal, but and the personal information of store patient and doctor's clinical diagnosis record.
In addition, numerical data is connected with data base, biomedicine signals diagnosis algorithm and another diagnostic data base, so that a disease name the most accurately can be provided.Can make the doctor utilize above-mentioned database root to learn processing according to statistics and make objective diagnosis, and utilization USB transmission path implements to have the visual stethoscope system of high added value.
Therefore, among the present invention, patient and his or her guardian the time can hear that in diagnosis the sound of thoracic cavity and heart also can see the waveform of data, thereby realized objective diagnosis, and data base and diagnostic software according to thoracic cavity and heart sounds draw clinical data and open the medical science prescription, thereby can make more reliable diagnostic.
In addition, can share chest and cardiac data storehouse between the doctor, have and improve therapeutic effect and manage afterwards and treat the advantages such as information that variform is provided for the patient.
Description of drawings
Fig. 1 is the structure chart of explanation according to visual stethoscope of the present invention;
Fig. 2 a is the structure chart of the visual stethoscope embodiment 1 of key diagram 1;
Fig. 2 b is the structure chart of the visual stethoscope embodiment 2 of key diagram 1;
Fig. 2 c is the structure chart of the visual stethoscope embodiment 3 of key diagram 1;
Fig. 3 is the π-mode filter of explanation foundation visual stethoscope of the present invention and the circuit diagram of the mode filter of falling L-;
Fig. 4 is the cutaway view of explanation according to the stethoscopic pick up of the present invention's assembling;
Fig. 5 carries out the structure chart of biomedicine signals analysis programme according to the present invention for explanation;
Fig. 6 is the sampling of explanation foundation visual stethoscope of the present invention and the oscillogram of maintenance method;
Fig. 7 is the screenshot capture of explanation biomedicine signals analysis and diagnotor;
The oscillogram that Fig. 8 a to 8d carries out clinical diagnosis for the biomedical diagnostic program of explanation utilization Fig. 7.
The specific embodiment
Fig. 1 is the structure chart of explanation according to the visual stethoscope of one embodiment of the present of invention, and it comprises pick up 100, controller 200, voice output unit 300, speaker output unit 400 and a computer 500.
As shown in the figure, controller 200 comprises first amplifying unit 211, super low pass filter (LPF) 213, second amplifying unit 215, audio unit 217, signal inputting interface 231, automatic gain control unit 233, sampling keeping unit 235, analog-digital conversion unit 237, digital signal processing unit 239, digital-to-analog converting unit 241, semaphore control unit 243 and USB transmission path terminal 251.
Above-mentioned controller 200 can be connected with 500 with the external equipment 300,400 of various models, as for example making voice output unit 300 doctor directly hear the earphone of patient diagnosis sound or the outlet terminal that speaker is connected to audio unit 217, for example can make common people hear that the speaker of diagnosis sounds signal is connected to semaphore control unit 243, and for example personal computer or notebook are connected to USB transmission path terminal 251 a computer speaker output unit 400.
In other words, from external equipment, can be divided into three functional areas to controller 200, at first, sound processing unit 210, comprise first amplifying unit 211, super LPF213, second amplifying unit 215 and audio unit 217, shown in Fig. 2 a, second, sound processing unit 230, comprise first amplifying unit 211, super LPF213, signal inputting interface 231, automatic gain control unit 233, sampling keeping unit 235, analog-digital conversion unit 237, digital signal processing unit 239, digital-to-analog converting unit 241 and semaphore control unit 243, shown in Fig. 2 b, at last, digital communication unit 250, comprise first amplifying unit 211, super LPF213, signal inputting interface 231, automatic gain control unit 233, sampling keeping unit 235, analog-digital conversion unit 237, digital signal processing unit 239 and USB transmission path terminal 251 are shown in Fig. 2 c.
Each embodiment of above-mentioned visual stethoscope is described below.
At first, among Fig. 2 a, pick up 100 is gathered biomedicine (thoracic cavity and the heart) signal that human body produces, and they are converted to the signal of telecommunication, in detail, collect sound that the thoracic cavity of human body and heart produce or biomedicine signals and they are sent to controller 210 exactly.
Controller 210 comprises first amplifying unit 211 that can amplify and send from the electric signal of pick up 100, filter the super LPF213 that demarcates the frequency band signal in the electric signal that amplifies, amplification from second amplifying unit 215 of the biomedicine signals of super LPF213 output and by only make amplification then as mentioned above in the biomedicine signals of output certain frequency band signal remove the audio unit 217 of noise by predetermined wave filter.Super LPF213 frequency configuration is 1.0kHz, and therefore, the frequency that is higher than 1.0 kHz will be by filtering.
In addition, voice output unit 300 links to each other with audio unit 217, makes the doctor can monitor and hear patient's diagnosis sounds, and voice output unit 300 comprises the earphone or the speaker that can be output as the signal from audio unit 217 acoustical signal.
As shown in Figure 3, low pass filter 219 is made up of π-mode filter and the mode filter of falling L-.π-mode filter is removed some from filter the thoracic cavity of back output and the high-frequency signal of the not filtering in the heart sounds signal by super LPF213, revises the primary signal of thoracic cavity and heart sounds to prevent high-frequency signal.The mode filter of falling L-is by induction apparatus L and remove radio-frequency component once more and the capacitor C of the primary signal of regenerating forms.
Fig. 2 b is the structure chart of explanation according to the embodiment 2 of controller of the present invention, and it comprises described first amplifier 211, super LPF213, signal inputting interface 231, automatic gain control unit 233, sampling keeping unit 235, analog-digital conversion unit 237, digital processing element 239, digital-to-analog converting unit 241, semaphore control unit 243 and speaker output unit 400.
Pick up 100 is to possess biomedicine signals that receives the human body generation and the sound collection head that this conversion of signals is become electric signal function, in other words, its is gathered sound that torso model produces or biomedicine signals (thoracic cavity and heart) and they is sent to controller 200.
Above-mentioned controller 200 comprises first amplifying unit 211 of the electric signal that amplifies pick up 100 transmission, filter demarcate the super LPF213 of frequency band signal in the electric signal of amplification of process, the biomedicine signals of super LPF213 output is sent to the signal inputting interface 231 of automatic gain control unit 233, the signal that maintenance and control transmit by the signal inputting interface is in the automatic gain control unit 233 near the primary signal state, sampling and maintenance are from the sampling keeping unit 235 of automatic gain control unit 233 signals, is the analog signal conversion of sampling and maintenance the A/D converting unit 237 of digital signal, carry out coding/decoding, sound detection, the digital signal processing unit of noise control and Signal Compression and decompressing function, the output signal of digital signal processing unit converted to analogue signal and the D/A converting unit 241 of their output and control semaphore control unit 243 from the output signal strength of D/A converting unit 241.
Automatic gain control unit 233 upwards amplifies the little signal of amplitude and weakens the big signal of amplitude, and therefore the signal that causes exporting always has constant amplitude.
In addition, when becoming the analog signal conversion of thoracic cavity and heart sounds bit to make it to become digital signal, carry out sampling operation in order in discrete time, to obtain data sampling holding unit 235 by the sample circuit that frequency is higher than 2.0kHz, and sampling keeping unit 235 is also carried out the locking digital signal and is kept the maintenance operation of its value, as shown in Figure 6.
In addition, A/D converting unit 237 and D/A converting unit 241 preferably have and are higher than 0.01% total harmonic distortion (THD) and the above pairing performance of signal to noise ratio (snr) of 96dB.THD is corresponding to the reproduction precision value that is equal to or less than 0.01%, this value is the repeatability value about thoracic cavity of their primary signals and heart sounds, and the SNR value of 96dB is a value that shows the optimal separation degree, this value is thoracic cavity and heart sounds signal and noise about 100,000: 1 ratio.
In addition, speaker output unit 400 is preferably a kind of speaker that can be output as the signal from semaphore control unit 243 acoustical signal.
Fig. 2 c is the structure chart of explanation according to the embodiment 3 of digital stethoscope of the present invention.As shown in the figure, this digital stethoscope comprises pick up 100, amplifying unit 211, super LPF213, signal inputting interface 231, automatic gain control unit 233, sampling keeping unit 235, A/D converting unit 237, digital signal processing unit 239 and a computer 500.
Pick up 100 is to gather the biomedicine signals of human body generation and they are converted to the sound collection head of electric signal, and in detail, sound or biomedicine (thoracic cavity and the heart) signal of gathering the torso model generation also send controller 200 to.
Above-mentioned controller 200 comprises the amplifying unit 211 of amplification from the electric signal of pick up 100 transmission, filter demarcate the super LPF213 of frequency band signal in the electric signal of amplification of process, biomedicine signals by super LPF213 output is sent to the signal inputting interface 231 of automatic gain control unit 233, the signal that maintenance and control transmit by signal inputting interface 231 is in the automatic gain control unit 233 near the primary signal state, sampling and maintenance are from the sampling keeping unit 235 of automatic gain control unit 233 signals, with the analog signal conversion of sampling and maintenance is the A/D converting unit 237 of digital signal, carry out the digital signal processing unit 239 of coding/decoding and Signal Compression and decompressing function and be connected to the USB transmission path terminal 251 of outer computer 500 by predetermined cable.
In addition, the signal that is sent to digital signal processing unit 239 cushions in independently complementary memory cell read only memory (ROM) that is built in computer 500 and random-access memory (ram) by USB transmission path terminal 511, or shows on LCDs by information being input in the biomedicine signals diagnosis that is stored in the computer 500 and the analysis programme.
In addition, thoracic cavity and the heart sounds digital signal by USB transmission path terminal 511 is preferably following ﹠amp; The form of upper reaches, 16 bit single currents or 24 bit streams receives or transmits, and its sampling bit rate can change in 6.4 to 48kHz scope.
Although diagram is not preferably used the energy of a rechargeable battery as controller 200, and when controller 200 was connected to the USB transmission path terminal 511 of computer 500, this battery charged automatically by USB transmission path terminal 511.
Therefore, controller 200 does not need independently power supply supply, because it uses the energy of supply from computer 500 by USB transmission path terminal.At ordinary times, internal battery (3.6V Ni-cd) also charges, but can use visual stethoscope with the stethoscopic form of the traditional analog that comprises an independent internal battery (3.6V Ni-cd) when stethoscope uses when visual stethoscope is used as simulate in the past.
Stethoscopic pick up in the foregoing description comprises main body 110, vibrating diaphragm 130, mike 140, lid 150 and cable 170 as described in Figure 4.
In addition, figure number 113 is annular second sound collection plate of giving prominence to vibrating diaphragm 130 from first sound collection plate, 111 inner surfacies.During diagnosis, the doctor contacts human chest with stethoscopic first sound collection plate 111, produce sound (grating) when chest moves stethoscope and diagnoses, this sound directly is passed to second sound collection plate 113 by sound collection hole 115, can produce bigger echo and noise.For fear of this situation, thereby one second sound collection plate 113 is installed, is used to isolate external noises and the grating that produces by this contact, and directly transmits thoracic cavity and heart sounds.In addition, when the doctor is placed on patient's chest to the auscultation head, second sound collection plate 113 since with skin contact and pressure is adhered on the skin of human body, oscillation phenomenon is disappeared.Second sound collection plate 113 can prevent because the vibration disappearance that contact skin and pressure cause by installing.
In addition, in the present invention, main body is made rather than metal material by plastic material.Can prevent from like this when contact auscultation head contact patient skin, to make the patient feel unhappy and uncomfortable or frightened, because the heat insulating ability of plastic material is better than metal material because main body 110 compares cold.
In addition, vibrating diaphragm 130 lower end that is connected in opening produces the certain vibration that produces with the sound that diagnosis object produced.Mike 140 inserts in the cavity that sound collection hole 115 upper ends form so that amplify from the sound of sound collection hole 115 inputs.Lid 150 screws down in chamber outer surface and support body 110, and one end central authorities insert sound insulation foundry goods 160.Cable 170 inserts sound insulation foundry goods 160 and is connected with the outlet terminal of mike 140 upper ends, to transmit the acoustical signal that amplifies from mike 140.
In addition; between the outer surface of the cavity of main body 110 and mike 140, insert the buffer rubber member 141 that prevents that noise from flowing into and producing; between above-mentioned mike 140 upper end-face edges and sound insulation foundry goods 160, insert ring-type sound insulation rubber components 145, with the sound of protection by sound collection hole 115 and mike 140 inflows.
In addition, main body 110 is connected by predetermined link 120 each other with vibrating diaphragm 130.Above-mentioned link 120 is that section is similar "] " shape rubber ring, be inserted between the lower surface of groove that main body 110 edges form and vibrating diaphragm 130, thereby main body 110 and vibrating diaphragm 130 be connected to a fixed.
The outer surface of aforementioned body 110 chambers has screw, at the inner surface of lid 150 nut that is complementary with it is arranged.
That is, vibrating diaphragm 130 converts the sound from the thoracic cavity to vibration.115 vibration acquisitions that are received from vibrating diaphragm 130 of sound collection hole are in the hole, thus the sound of collection thoracic cavity and heart.Link 120 tightly remains on vibrating diaphragm 130 lower surface at first sound collection plate, 111 edges.Main body 110 is gathered sound by vibrating diaphragm 130 and opening, and the interior angle of vibrating diaphragm 130 has best sound collection structure when being approximately 10 ° to 12 °.
The size of sound collection hole 115 is approximately φ 3.0 to φ 3.5.The size of the sound (sound that the chamber of human body produces) that is produced by people's resonance body diminishes with the size of sound collection hole 115 or becomes big, and this is defined as Q (representing the vibration repetition (frequency) of certain certain hour point and the relation between the amplification degree).When Q is optimum, can hear the thoracic cavity and the heart sounds of the best that does not have echo.Therefore, the size of sound collection hole 115 must be that child or adult suitably adjust according to the patient.
In addition, lid 150 is that locking main body 110 makes it not the fixed part that moves, and the doctor holds above-mentioned lid and diagnoses when diagnosis.Mike 140 is used for the sound from pick up is converted to the signal of telecommunication.Buffer rubber member 141 is that protection mike 140 is to prevent the shelf of mike 140 and hole change thereof.Bag carrying cable 170 in the foundry goods 160 is that a slice prevents that ambient noise from flowing into and the direct rubber that transmits from the signal of sound collection hole 115 and mike 140.The sound that 145 protections of ring-shaped rubber parts flow into by sound collection hole 115.Cable 170 is to be used for the connecting line of electrical signal transfer from the sound (thoracic cavity and heart) of mike 140.
As mentioned above, form cavity, then mike be installed on it in main body 110 upper end of auscultation head, so as can by mike 140 vibrating diaphragm 130 in addition very faint rattle fully amplify.In addition, mike 140 is installed in the upper end of sound collection hole 115, so that can fully amplify thoracic cavity and heart signal.In addition, utilize single vibrating diaphragm 130 fully to detect high frequency but also can fully detect low frequency.
In addition, yielding rubber 141 is installed between the slot part of mike 140 and main body 110, leaks the sound wave of sound collection hole 115 so that can protect mike 140 and cut off.Ring-shaped rubber 145 so that can prevent the leakage of sound collection hole 115 place's sound and the inflow of noise, and is protected mike 140 between the upper end and foundry goods 160 of mike 140, thereby strengthens the function by sound collection hole 115 collections and human body sound.
Above-mentioned pick up is by being directly connected to the controller 200 that is used for analyzing thoracic cavity and heart sounds to an end of three-dimensional socket rather than receiver and cable 170, so that not only doctor but also common people also can carry out autognostic, in addition, doctor and patient can directly hear his thoracic cavity and heart sounds, also can see monitoring result through thoracic cavity and heart sounds analyzer-controller with a chart by analysis programme.
Fig. 5 is a structure chart of carrying out thoracic cavity and cardiac diagnosis and analysis programme according to the present invention in computer.At first, biomedicine signals, for example auscultatory sound, blood pressure, body temperature, respiratory frequency and the blood oxygen saturation that receives from pick up 100 directly is passed to computer 500 by USB transmission path terminal 511.
The biomedical diagnostic algorithm is installed in aforementioned calculation machine 500, so that can the display process pick up 100 thoracic cavities of collecting and the process of heart sounds, and, for the biomedicine signals that receives by USB transmission path terminal 511, the predetermined biomedicine signals parser that available packages is contained in fast Fourier transform (FFT) unit and logarithm energy level crossing rate (LCR) computing unit 515 is analyzed the logarithm energy level crossing rate of each biomedicine signals, and shows on monitor 519.
All numerical value and the mode of operation of program are presented on the monitor 519.Monitor 519 usefulness touch screens are realized, make therefore have the advantage that shortens Diagnostic Time by the simple to operate of monitor.
In order to extract the feature of thoracic cavity and heart sounds signal, need to adopt parameters,acoustic to be used for signal analysis.This thoracic cavity and heart signal are thoracic cavity and the heart analog sound informations of importing continuously along with the time.Need be above-mentioned thoracic cavity and heart simulated sound digitized, and, just need compression thoracic cavity, harmless lost territory and heart sounds signal in order to overcome the restriction of hardware resource.The compression of thoracic cavity and heart sounds signal is used for from signal deletion redundant information and storage assembly.When thoracic cavity and heart sounds signal are input to when being used in the evaluator discerning thoracic cavity and heart information without any control ground, the resource of evaluator since a large amount of redundant datas of needs processing be consumed.
Therefore,, define analysis interval width (Hanning window the best), in this interval, analyze sound characteristic and use or utilization result based on this analysis about the demarcation of sound import in order to reduce the consumption of identifier resources.
Logarithm energy level crossing rate is calculated by the logarithm energy level crossing rate computing unit 515 usefulness following equations 1 that are built in the computer:
sga[x(n)-TH]＝I，x(n)≥0
sgn[x(n)-TH]＝-1，x(n)<0
Wherein, TH is a marginal value, is determined by the feature and the various measurement result of input signal.Because definite and a large amount of calculating of marginal value is a difficult problem, supposes that the TH value is always not constant, determines by characteristic variable of observing input signal and the average characteristics of using input signal.In other words, marginal value is determined by input variable.Therefore, the marginal value that experimentally is used for signal monitoring is fixed, thereby has determined the marginal value that changes with situation, by voice data being carried out FFT and using can take temperature LCR value and the energy level of 20Hz～4000Hz whether to continue increase
With the interval of the expansion of heart sounds
The button of waveform, identifier
For being used to stop to write down or playing the button of thoracic cavity and heart sounds, identifier
Open button, identifier for what be used to be written into thoracic cavity and heart sounds data base
For being used to store the save button of thoracic cavity and heart sounds content.
In addition, identifier
For being used for the window of record patient name, identifier
For being used to import the window of patient's certificate number or identification card number, identifier
For thoracic cavity and heart sounds are saved as other name or when storing thoracic cavity and heart sounds the window of input recorded data library file (comprising year, month, day, time and filename), identifier
For showing the window of patient temperature, identifier
For showing the window of the minimum and maximum blood pressure of patient, identifier
For showing the window of patient's pulse, identifier
For being used to show blood oxygen saturation SpO
2Window, identifier
Be the window of the LCR value that is used to show diagnostic rule (judging bronchitis, pneumonia and asthma), identifier according to the LCR value
For when writing down thoracic cavity and heart sounds, regulating the window of volume.
In addition, identifier
For using mouse in whole thoracic cavity and heart sounds
In choose a part and need the window observed in detail, identifier
The whole thoracic cavities and the heart sounds that show during for (record) that thoracic cavity and heart sounds are shown when the data base is written into or diagnosis, identifier
Original sound waveform for amplifying wherein exists
Between the middle whole thoracic cavity and the designation area in the heart sounds that shows
Be exaggerated identifier
For
Between the designation area of middle whole thoracic cavity that shows and heart sounds
Sound spectrogram (frequency is 1.0kHz and 1.0～2.0kHz).
Fig. 8 a is the clear oscillogram of healthy people's eupnea frequency, and Fig. 8 b is the oscillogram of non-healthy person such as asthmatic patient abnormal breathing frequency, and Fig. 8 c is the picture of early stage asthma state, and Fig. 8 d is the picture of moderate asthma state.
Identifier
Represent certain portion waveshape in the whole interval.When the doctor watches data waveform, judge specific part
When problem is arranged, this part is carried out labor, so that can make correct clinical diagnosis and record for the patient.
Different with the foregoing description, doctor and patient or intern are as will hear thoracic cavity and heart sounds simultaneously or play thoracic cavity and heart sounds in diagnosis the time, and the present invention can be a speaker output unit 400 from USB transmission path terminal 511 transmission thoracic cavities and heart sounds to speaker or earphone directly by D/A converting unit 241 and semaphore control unit 243 that can control signal intensity.
Though for the purpose of setting forth; preferred implementation of the present invention is disclosed; but under the situation of those skilled in the art scope of disclosure and spirit in not deviating from claim of the present invention; still can make various modifications, increase or replacement, all should fall in the protection domain of claim of the present invention.
Claims (19)
1. visual stethoscope comprises:
Pick up is used to gather the biomedicine signals of human body generation and convert electric signal to;
Controller is used to receive and amplifies the thoracic cavity of pick up output and heart sounds and filter or carry out data transaction and processing and they output with the frequency of demarcating; And
Output unit is used to receive the signal of controller output and this signal is output as sound or uses certain rule to diagnose, analyze and shows signal.
2. visual stethoscope according to claim 1 is characterized in that described controller comprises:
First amplifying unit is used to amplify the electric signal from described pick up output;
Ultralow bandpass filter is used to filter the spot frequency segment signal of the electric signal of amplification;
Second amplifying unit is used to amplify the biomedicine signals from described ultralow bandpass filter output; And
Audio unit, the signal of biomedicine signals characteristic frequency section that is used for only making amplification is by predetermined wave filter.
3. visual stethoscope according to claim 2 is characterized in that described output unit is the voice output unit that receives the signal of being exported by audio unit and convert thereof into acoustical signal.
4. visual stethoscope according to claim 2 is characterized in that described audio unit comprises:
Signal deteching circuit is used to detect thoracic cavity and heart sounds signal from described second amplifying unit; And
Low pass filter is used for removing noise by filtration from the signal of the signal characteristic frequency section of signal deteching circuit.
5. visual stethoscope according to claim 1 is characterized in that described controller comprises:
First amplifying unit is used to amplify the electric signal from described pick up output;
Ultralow bandpass filter, the electric signal that is used for filtering amplification is demarcated the signal of frequency band;
The signal inputting interface is used to transmit the biomedicine signals from described ultralow bandpass filter output;
Automatic gain control unit, the biomedicine signals that is used to keep or control described signal inputting interface to export is near the primary signal state;
Sampling keeping unit is used to the signal of taking a sample and keeping exporting from described automatic gain control unit;
Analog to digital (A/D) converting unit is used for the analog signal conversion of sampling and maintenance is become digital signal;
Digital signal processing unit is used to receive the signal of described A/D converting unit output and carry out coding or decoding function and compression or decompressing function; And
USB (universal serial bus) (USB) transmission path terminal is passed to outside output unit to signal from described digital signal processing unit.
6. visual stethoscope according to claim 5 is characterized in that described output unit is the computer that is connected in controller USB transmission path terminal, and it receives the signal of USB transmission path terminal output and uses pre-defined algorithm to diagnose and analyze.
7. visual stethoscope according to claim 1 is characterized in that described controller comprises:
First amplifying unit is used to amplify the electric signal of described pick up output;
Ultralow bandpass filter, the electric signal that is used for filtering amplification is demarcated the frequency band signal;
The signal inputting interface is used to transmit the biomedicine signals that described ultralow bandpass filter is exported;
Automatic gain control unit, the biomedicine signals that is used to keep or control described signal inputting interface to export is near the raw information state;
Sampling keeping unit is used to take a sample and keep the signal of described automatic gain control unit output;
The A/D converting unit, being used for the analog signal conversion of sampling and maintenance is digital signal;
Digital signal processing unit is used to receive described A/D converting unit output signal and carries out coding or decoding function and compression or decompressing function;
Digital-to-analog (D/A) converting unit is used for described digital signal processing unit output signal being converted to analogue signal and they being exported; And
The semaphore control unit is used to control from the signal amplitude of described D/A converting unit and signal and exports described outside output unit to.
8. according to the visual stethoscope of claim 7, it is characterized in that described controller further comprises:
Second amplifying unit is used to amplify the biomedicine signals from ultralow bandpass filter output; And
Audio unit is used for only making the biomedicine signals frequency band signal of amplification to remove noise and they are exported to described outside output unit by predetermined wave filter.
9. according to claim 7 or 8 described visual stethoscopes, it is characterized in that described controller further comprises the USB transmission path terminal that is used for be passed to described outside output unit from the signal of described digital signal processing unit.
10. visual stethoscope according to claim 7 is characterized in that described output unit is the speaker output unit that is used for the conversion of signals of semaphore control unit output is become acoustical signal and their are exported.
11., it is characterized in that described ultralow bandpass filter setpoint frequency is 1.0kHz according to the arbitrary described visual stethoscope of claim 2-8.
12., it is characterized in that described pick up comprises according to the arbitrary described visual stethoscope of claim 1-8:
Main body is approximate infundibulate, and there is the opening of broad its lower end, and the top of opening central authorities forms the sound collection hole with narrow passage shape;
Mike is installed in during tut gathers the upper end, hole and gather the wide cavity that the hole communicates, to amplify the sound of going into from the collection orifice flow;
Vibrating diaphragm is connected body openings subordinate end, and necessarily vibrates according to the loud little generation that diagnosis object sends;
Lid, the outer surface that is tightened in described hole be with support body, and be connected with the sound insulation foundry goods of one end central authorities; And
Cable is inserted into the central authorities of above-mentioned foundry goods and connects the outlet terminal that described mike upper end forms, and described cable is delivered to the outside to the acoustical signal that amplifies from mike.
13. visual stethoscope according to claim 12 is characterized in that buffer rubber member is inserted between the outer and mike outer surface of described body cavity.
14., it is characterized in that sound insulation ring-shaped rubber parts are inserted between mike upper end one side and the foundry goods according to claim 12 or 13 described visual stethoscopes.
15. visual stethoscope according to claim 12 is characterized in that described main body made by plastic material.
16. visual stethoscope according to claim 1 is characterized in that described output unit comprises computer, this computer receives blood pressure, body temperature, respiratory frequency and blood oxygen saturation SpO by described pick up
2In one or more biomedicine signals, gather also management thoracic cavity and heart sounds signal.
17. visual stethoscope according to claim 16 is characterized in that described computer comprises:
The Hanning window unit is used for thoracic cavity and heart sounds signal and produces desired data; And
Fast Fourier transform unit and logarithm energy level crossing rate computing unit are used for biomedicine signals analysis or diagnosis.
18. visual stethoscope according to claim 17, it is characterized in that described computer is included in the biomedicine signals diagnosis algorithm in described fast Fourier transform unit and described logarithm energy level crossing rate (LCR algorithm) computing unit, analyze the logarithm energy level crossing rate in thoracic cavity and heart sounds separately, and be presented on the monitor.
19. visual stethoscope according to claim 18, the monitor that it is characterized in that described computer is a touch screen.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050024678 | 2005-03-24 | ||
| KR1020050024678A KR100669532B1 (en) | 2005-03-24 | 2005-03-24 | Usb digital stethoscope |
| KR2020050008908 | 2005-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101146482A true CN101146482A (en) | 2008-03-19 |
Family
ID=37623061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800095024A Pending CN101146482A (en) | 2005-03-24 | 2006-03-24 | Visual stethoscope |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100669532B1 (en) |
| CN (1) | CN101146482A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103417241A (en) * | 2012-05-17 | 2013-12-04 | 辽宁中医药大学 | Automatic analyzer of lung sounds |
| CN106792369A (en) * | 2017-01-23 | 2017-05-31 | 上海贝生医疗设备有限公司 | One kind is used for stethoscopic split type signal processing apparatus |
| CN108742699A (en) * | 2018-06-28 | 2018-11-06 | 常州市第二人民医院 | A kind of electronic auscultation device of dust control and noise absorption |
| CN109754818A (en) * | 2019-03-15 | 2019-05-14 | 林超 | A kind of detection of sounding and pronunciation practice method |
| CN110570874A (en) * | 2018-06-05 | 2019-12-13 | 中国科学院声学研究所 | System and method for monitoring sound intensity and distribution of wild birds |
| CN111132620A (en) * | 2017-09-28 | 2020-05-08 | 聿信医疗科技股份有限公司 | Networking electronic stethoscope system |
| CN114184270A (en) * | 2021-12-02 | 2022-03-15 | 观为监测技术无锡股份有限公司 | Equipment vibration data processing method, device, equipment and storage medium |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100996399B1 (en) * | 2009-01-14 | 2010-11-24 | 주식회사 엑스엘 | Non-contact electronic stethoscope |
| KR101303613B1 (en) * | 2013-02-27 | 2013-09-11 | 연세대학교 원주산학협력단 | Digital stethoscopic system |
| KR20200129951A (en) | 2019-05-10 | 2020-11-18 | 썬메디텍(주) | Cardiac disease diagnosis system using the relationship between heart sound and spectrogram of heart sound and electrocardiogram |
-
2005
- 2005-03-24 KR KR1020050024678A patent/KR100669532B1/en not_active IP Right Cessation
-
2006
- 2006-03-24 CN CNA2006800095024A patent/CN101146482A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103417241A (en) * | 2012-05-17 | 2013-12-04 | 辽宁中医药大学 | Automatic analyzer of lung sounds |
| CN103417241B (en) * | 2012-05-17 | 2017-03-22 | 辽宁中医药大学 | Automatic analyzer of lung sounds |
| CN106792369A (en) * | 2017-01-23 | 2017-05-31 | 上海贝生医疗设备有限公司 | One kind is used for stethoscopic split type signal processing apparatus |
| CN111132620A (en) * | 2017-09-28 | 2020-05-08 | 聿信医疗科技股份有限公司 | Networking electronic stethoscope system |
| CN110570874A (en) * | 2018-06-05 | 2019-12-13 | 中国科学院声学研究所 | System and method for monitoring sound intensity and distribution of wild birds |
| CN110570874B (en) * | 2018-06-05 | 2021-10-22 | 中国科学院声学研究所 | System and method for monitoring sound intensity and distribution of wild birds |
| CN108742699A (en) * | 2018-06-28 | 2018-11-06 | 常州市第二人民医院 | A kind of electronic auscultation device of dust control and noise absorption |
| CN109754818A (en) * | 2019-03-15 | 2019-05-14 | 林超 | A kind of detection of sounding and pronunciation practice method |
| CN109754818B (en) * | 2019-03-15 | 2021-11-26 | 林超 | Sound production detection and exercise method |
| CN114184270A (en) * | 2021-12-02 | 2022-03-15 | 观为监测技术无锡股份有限公司 | Equipment vibration data processing method, device, equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060102758A (en) | 2006-09-28 |
| KR100669532B1 (en) | 2007-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101146482A (en) | Visual stethoscope | |
| CN102973277B (en) | Frequency following response signal test system | |
| CA3010835C (en) | Stethographic device | |
| US20130150754A1 (en) | Electronic stethoscopes with user selectable digital filters | |
| WO2009127547A1 (en) | Electronic stethoscope | |
| WO1986005965A1 (en) | Multi-channel ventilation monitor and method | |
| KR20030065228A (en) | System for outputs Ch'ongjin acoustic signal | |
| WO2014120300A2 (en) | Acoustic monitoring system and methods | |
| CN102232833A (en) | Audiometry device based on over-sampled multi-frequency multi-amplitude joint estimated auditory evoke potentials | |
| CN105496447A (en) | Electronic stethoscope with active noise reduction and auxiliary diagnosis functions | |
| CN106419953A (en) | Wireless auscultation system based on double-frequency collection and vibration reduction | |
| CN113855052A (en) | Neural feedback intervention system and method based on memorial meditation | |
| EP1187550A4 (en) | Handheld audiometric device and method of testing hearing | |
| RU2644546C1 (en) | Electronic medical stethoscope | |
| US20060098825A1 (en) | Electronic adaption of acoustical stethoscope | |
| WO2006101375A1 (en) | Visual stethoscope | |
| KR100918575B1 (en) | Multi-Vital Sign Wireless Monitoring System | |
| RU66174U1 (en) | RESPIRATORY NOISE RECORDING AND ANALYSIS DEVICE | |
| KR100669531B1 (en) | Wireless digital stethoscope using usb port | |
| KR19990085828A (en) | Electronic stethoscope | |
| CN200984191Y (en) | Medical electronic stethoscope | |
| CN113938767B (en) | Bone conduction intelligent sleep-aiding device based on neural network | |
| KR20010097170A (en) | An Electronic Stethoscope | |
| KR200325515Y1 (en) | Wireless stethoscope with a built in speaker | |
| CN210472166U (en) | Stethoscope based on screening congenital heart disease |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |