KR20150001009A

KR20150001009A - Mobile terminal diagnosis system using portable wireless digital electronic stethoscope

Info

Publication number: KR20150001009A
Application number: KR20130073546A
Authority: KR
Inventors: 박기영; 정의붕; 이철희
Original assignee: 박기영; 호원대학교산학협력단
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2015-01-06

Abstract

The present invention relates to a portable terminal diagnostic system using a portable wireless digital electronic stethoscope, which converts a collected sound energy into an electroacoustic signal, amplifies and filters the filtered acoustic signal, amplifies the filtered signal again, And an object of the present invention is to provide a system including a portable terminal for analyzing a bio-acoustic waveform using a signal input from a stethoscope and a stethoscope, analyzing a waveform analyzed in conjunction with a diagnostic database, and deriving a diagnosis result .
In order to achieve the above object, the present invention provides a portable wireless digital electronic stethoscope device for stooping a living body sound through a sound collecting plate. The portable wireless digital electronic stethoscope device converts the collected sound energy into an electroacoustic signal, amplifies and filters the filtered acoustic signal, A stethoscope device for wireless transmission; A portable terminal for analyzing a bio-acoustic waveform using a signal input from the stethoscope and analyzing a waveform analyzed in conjunction with a diagnostic database to derive a diagnostic result; .

Description

TECHNICAL FIELD [0001] The present invention relates to a mobile terminal diagnostic system using a portable wireless digital electronic stethoscope. [0002] MOBILE TERMINAL DIAGNOSIS SYSTEM USING PORTABLE WIRELESS DIGITAL ELECTRONIC STETHOSCOPE [0003]

The present invention relates to a portable terminal diagnostic system using a portable wireless digital electronic stethoscope, and more particularly, to a portable terminal diagnostic system using a portable wireless digital electronic stethoscope, in which a living human's or an animal's vital sounds (heart sounds, breath sounds, And the portable terminal analyzes the living body sound, displays it in waveform and color in the time domain and frequency domain, diagnoses the patient's disease name in conjunction with the diagnosis database, And connecting a emergency call such as a neighboring hospital or 119 according to a diagnosis result or a user's need, thereby obtaining a stethoscope and a diagnostic result without being restricted by place and time.

Related to the technology related to the conventional stethoscope, there have been many applications and disclosures in addition to Korean Patent Laid-Open No. 10-1998-0085828 (hereinafter referred to as "prior art").

The apparatus according to the prior art includes measurement means having means for measuring various data in contact with a part of a human body to be examined and means for storing and controlling the data acoustically or electrically connected with the measurement means A tube having a microcomputer and a power source provided in the power distributor so that the heart sound measured by the measuring means can be transmitted to the branch conduit, And an earpiece communicating with the acoustic tube.

However, in the prior art including the above-mentioned prior art, there is a problem that the earpiece and the tube are interfered with the treatment, and the data management and the optimal diagnosis result can not be obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a stethoscope device for converting sound energy collected into an electroacoustic signal, amplifying and filtering the amplified sound, amplifying the filtered signal again and wirelessly transmitting the amplified signal, An object of the present invention is to provide a system including a portable terminal for analyzing a bio-acoustic waveform using a signal input from a stethoscope and analyzing a waveform analyzed in conjunction with a diagnostic database to derive a diagnosis result.

According to an aspect of the present invention, there is provided a portable wireless digital electronic stethoscope for stethoscaling a living body sound through a collection board, A stethoscope for amplifying and filtering the signal, amplifying the filtered signal again and wirelessly transmitting the signal; A portable terminal for analyzing a bio-acoustic waveform using a signal input from the stethoscope and analyzing a waveform analyzed in conjunction with a diagnostic database to derive a diagnostic result; .

According to the present invention as described above, the use of the miniaturized portable wireless digital electronic stethoscope makes it easy and easy to stethoscope.

Further, according to the present invention, it is possible to derive an optimal diagnosis by extracting a similar disease name in conjunction with a diagnostic database.

In addition, according to the present invention, a living body sound collected from a patient and wirelessly transmitted and received through Bluetooth can be stored as digital data, and can be directly confirmed by a display (LED, LCD) and a sound (earphone / speaker).

Further, according to the present invention, statistical methods are applied according to accumulated diagnostic database data, thereby making it possible to issue more objective and reliable clinical data and prescriptions.

Further, according to the present invention, it is possible to share data among doctors by data of a database, to integrate the advice of more authoritative doctors, to improve the quality of medical treatment over time and space, There is also the effect of exchanging and learning effect.

According to the present invention, various data analyzed through the portable terminal are managed, thereby providing a large amount of information for post-management and treatment of the patient, sharing various data among hospitals using the most advanced information network, System, and so on.

Brief Description of the Drawings Fig. 1 is an overall configuration diagram of a portable terminal diagnostic system using a portable wireless digital electronic stethoscope according to the present invention; Fig.
FIG. 2 is an exemplary view showing a detailed configuration of an input / output unit according to the present invention; FIG.
3 is an exemplary view showing input / output information through a basic information input management module of a portable terminal according to the present invention.
4 is a diagram illustrating input / output information through an entire waveform management module and an execution management module of a portable terminal according to the present invention.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

A portable terminal diagnostic system using a portable wireless digital electronic stethoscope according to the present invention will now be described with reference to FIGS. 1 to 4. FIG.

FIG. 1 is an overall configuration diagram of a portable terminal diagnostic system S using a portable wireless digital electronic stethoscope according to the present invention. The portable terminal includes a stethoscope device 100 and a portable terminal 200 as shown in FIG.

The stethoscope device 100 is a portable wireless digital electronic stethoscope device for stuttering a living body sound through a sound collecting plate. The stethoscope device 100 converts the collected sound energy into an electroacoustic signal, amplifies and filters the filtered sound signal, amplifies the filtered signal, Wireless transmission.

Although the present invention is not limited to this, it is also possible to set the communication method to Bluetooth (Zigbee), Wi-Fi (Wi-Fi) ) Can be connected to the earphone jack or charging jack directly connected to the wired communication method.

In this case, the filtering of the stethoscope 100 may be performed by a Bell mode for measuring heart sound at a frequency of 0 Hz to 400 Hz or less, a diaphragm mode for measuring breath sounds at a frequency of 300 Hz to 1200 Hz or less, And a wide mode in which the measurement is simultaneously performed.

In addition, the stethoscope device 100 modulates and amplifies the signal filtered in any one of the three modes using GFSK (Gaussian frequency shift keying, 2.4 GHz) method and transmits the amplified signal. On the other hand, the stethoscope device 100 may perform encryption through an encoder according to an analysis apparatus.

As described above, the stethoscope device 100 according to the present invention includes a microphone for picking up bio-sounds and converting the collected sound energy into electro-acoustic signals, a bio-sound picked up by a three-stage filter circuit, To the mobile terminal 200 by using the mobile terminal 200. Accordingly, there is an advantage that it is not disturbed by the medical treatment by the earpiece and the tube of the conventional analog stethoscope.

The mobile terminal 200 is a mobile PC such as a tablet PC, a smart phone, or a tablet PC that operates various applications by audiovisual output and communicates with the outside based on pre-stored information and information input in real time, The bio-acoustic waveform is analyzed using the signal inputted from the stethoscope device 100, and the function of comparing the analyzed waveform with the diagnosis database 10 to derive the diagnosis result is performed. The analyzer 210, the comparing unit 220, and the input / output unit 230 as shown in FIG.

Specifically, the analysis unit 210 stores the signal input through the stethoscope device 100, generates data necessary for analysis through a Hamming window, performs Fast Fourier Transform (FFT) transformation And level crossing rate (LCR) analysis algorithms.

In this case, the level crossing ratio (LCR) means a crossing number of the signal waveform based on a threshold value set for each frame by setting a threshold. Similarly, the level crossing rate is calculated.

Here, the threshold value th is an important value. When the threshold value th is deviated from a value set as a reference value (selected by the diagnostic database 10 in which a normal cardiac puncture is built) for the heart, lobe and long sound of a normal patient, In the time domain, the waveform of the heart and the sound of the closed sound are displayed in red. Therefore, it is an algorithm to diagnose that the patient has heart or lung disease.

[Equation 1]

here,

to be.

Also, th means threshold, which is extracted from input signal data and determined by statistic of signal data (for example, th value can be expressed as 1000, 2000, etc.).

L (m) represents a level crossing rate (LCR) at a current frame (m) (a frame is a data interval, for example, 256 data is set to one frame).

x (n) is a stochastic digital data signal to be input, w is a window function used in signal processing, a Hamming function, m is a frame sequence currently being processed, and n is a discrete sample variable. And N is the number of input signals included in the frame. Currently N is set to 256, which is changed by the number of data.

In addition, the analyzer 210 sets the frequency band to three levels and extracts db _ML and db _HL parameters as shown in Equation (2) using the set energy for spectrogram analysis of the bio-acoustic waveform.

Basically, the frequency energy of 0 to 400 Hz band is set to Low spectral energy, the frequency energy of 300 to 600 Hz is set to Medium spectral energy, and the frequency energy of 600 to 1500 Hz band is set to High spectral energy. Respectively.

[Equation 2]

The comparator 220 compares the analyzed waveforms through the analyzer 210 in conjunction with the accumulated diagnostic database 10 to derive diagnostic results of the lesion according to the bio-acoustic waveform.

Here, the diagnostic database 10 includes a waveform DB 11 storing actual normal and abnormal biorhythm waveforms and spectrograms, and a waveform database including a biological sound waveform and key, body weight, body temperature, , A disease name DB 12 storing a disease name according to biological signal data such as blood pressure, blood pressure, and oxygen saturation.

At this time, the comparison unit 220 extracts a normalized distance on the time axis between voice patterns using a DTW (Dynamic Time Warping) algorithm, which is a voice recognition algorithm, and diagnoses and extracts a disease name through the diagnostic database 10.

For reference, the DTW (Dynamic Time Warping) algorithm is expressed by the following Equation 3 and Equation 4.

[Equation 3]

here,

Is a weighting factor, and F is a path weighting function. (Here, a path is a number indicating the number of paths to a destination, which is indicated by a path restriction (for example, A path or B path).

d is the Euclidean Distance (representing the distance value of two points), c (k) is the difference of the vector components of the two points

), And K denotes the dimension of A vector or B vector.

Weight coefficient

Is obtained by the following equation (4).

[Equation 4]

Where i, j, k denote a unit vector.

Then, the normalized distance D on the time axis is obtained as shown in [Equation 5].

[Equation 5]

Here, it means a generalized expression of g ([Expression 3]).

The input / output unit 230 is implemented as a user interface (UI) capable of inputting and outputting, and edits and manages the data extracted from the analysis unit 210 and the comparison unit 220 and information input from the user, . At this time, the input / output unit 230 may be configured as a touch screen.

That is, as shown in FIG. 2, a file management module having a new file, open, export, import, data management, print, and end functions, enlarges the entire waveform, enlarges the partial waveform, copies the selected area, Contact / name / key / weight / body temperature / heart rate / pulse rate / time / date / time information, A basic information input management module 232 (see FIG. 3) for inputting basic information and physician information of the patient and the guardian such as respiratory rate / blood glucose / oxygen saturation / A recent list management module 233 for managing related information to be written in the basic information and displaying related data in the entire waveform management module 236 when the item is selected and the data displayed in the entire waveform management module 236 The spectrogram management module 234 (see FIG. 4A) for displaying the frequency domain of the data when the partial section is selected and the data section 234 for selecting the partial section of the data displayed in the entire waveform management module 236 A magnified waveform management module 235 for managing the display of the municipal area of the data, a first 10-second interval of the data in the entire data area when recording or retrieving a past file is displayed, and a slider bar is moved (See FIG. 4B) for managing the entire waveform management module 236 (see FIG. 4B) for performing the reproduction, stop, reproduction, reproduction, (C) of FIG. 2), and a search module 238 for managing date search, parental list search, and sample database search.

The basic information input management module 232 as described above can receive the biometric signal data such as basic body temperature, pulse rate, respiration rate, blood pressure and the like at the time of the doctor's operation and can display the numerical value. The comparison unit 220 compares the result (red) of the threshold value of the level crossing ratio (LCR) with the three-region energy level of the frequency band of 256 Color spectrograms, etc.) can be derived.

The data stored in the analysis unit 210 or the diagnostic database 10 can be exported on-line through the export function of the help module 231 as described above, Data can be retrieved from the system. Accordingly, there is an advantage that the remote diagnosis can be realized and the diagnosis of the patient can be confirmed and prescribed by telemedicine between regions or countries.

On the other hand, the connection unit 240 displays a guidance message such as "emergency situation", "please visit the hospital", "close hospital is oo hospital" And characters to be displayed.

In addition, the connection unit 240 can connect an emergency call such as a neighboring hospital or 119 based on the location information of the mobile terminal 200 according to a user's need or diagnosis result.

As described above, in the system according to the present invention, a living body sound collected through the stethoscope device is wirelessly transmitted in a wireless manner, such as Bluetooth, so that a person or a large number of people (including a doctor, a veterinarian, It is possible to listen at the same time and to perform telemedicine between portable terminals and to connect emergency calls such as a neighboring hospital or 119 based on the position information of the portable terminal according to the user's needs or according to the diagnosis result, It is also advantageous to monitor them together.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

S: Portable terminal diagnostic system using portable wireless digital electronic stethoscope
100: Stethoscope device 200: Portable terminal
210: Analysis section 220:
230: input / output unit 240:
231: Help module 232: Basic information input management module 233: Recent list management module 234: Spectrogram management module 235: Expanded waveform management module 236: Overall waveform management module
237: Execution management module 238: Search module

Claims

A portable wireless digital electronic stethoscope device for stethoscaling a living body sound through a sound collector, comprising: a stethoscope device (100) for converting collected sound energy into an electroacoustic signal, amplifying and filtering the amplified sound signal; And
A portable terminal 200 for analyzing a bioelectrical sound waveform using a signal input from the stethoscope device 100, and comparing the analyzed waveform with the diagnostic database 10 to derive diagnosis results; A portable terminal diagnostic system using a portable wireless digital electronic stethoscope.

The method according to claim 1,
The filtering of the stethoscope device (100)
A bell mode for measuring heart sound at a frequency, a diaphragm mode for measuring respiration sound, and a wide mode for simultaneously measuring heart sound and respiration sound. The portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

The method according to claim 1,
The stethoscope device (100)
And modulates and amplifies the filtered signal, and transmits the modulated signal to a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

The method according to claim 1,
The mobile terminal (200)
A signal input through the stethoscope device 100 is generated and data necessary for analysis is generated through a Hamming window and a fast Fourier transform (FFT) transformation and a level crossing ratio (LCR) analysis algorithm An analysis unit 210 for analyzing a level crossing rate of each living body sound by the level crossing rate;
A comparison unit 220 for correlating waveforms analyzed through the analysis unit 210 in conjunction with the accumulated diagnosis database 10 to derive a diagnostic result about a disease name according to a bio-acoustic waveform; And
Output unit 230 that is implemented in a user interface (UI) capable of inputting and outputting and editing and managing information extracted from the analysis unit 210 and the comparison unit 220, ; Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

5. The method of claim 4,
The analysis unit 210 may be configured to determine,
Wherein the threshold value is set so as to calculate a level crossing rate that is an intersection number of the signal waveform based on a threshold value set for each frame.

5. The method of claim 4,
The analysis unit 210 may be configured to determine,
A portable terminal diagnostic system using a portable wireless digital electronic stethoscope, characterized in that, for spectrogram analysis of a living body sound waveform, energy is set according to a frequency band and a ratio of the set energy is calculated.

The method according to claim 1 or 4,
The diagnostic database (10)
A waveform DB 11 storing actual normal and abnormal bio sound waveforms and spectrograms and a biological signal including a biological sound waveform and at least one of body temperature, pulse, respiration rate, And a disease name database (12) storing a disease name according to the data.

5. The method of claim 4,
The comparator 320 compares
Extracting a normalized distance on a time axis between voice patterns using a DTW (Dynamic Time Warping) algorithm, and diagnosing the disease name through the diagnosis database (10) Diagnostic system.

5. The method of claim 4,
The input / output unit (230)
File management module with new file, open, export, import, data management, print and shutdown functions, signal with full waveform enlargement, partial waveform enlargement, selection copy, crop selection, pasting, A help module 231 for managing editing, device setting for connecting output devices, and program information; Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

5. The method of claim 4,
The input / output unit (230)
A basic information input management module 232 for inputting basic information and a doctor's opinion of a patient and a guardian including a guardian / medical number / contact / name / key / weight / body temperature / pulse / respiratory rate / blood glucose / oxygen saturation / Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

5. The method of claim 4,
The input / output unit (230)
A recent list management module 233 for displaying a list in the latest date time reverse order, writing related information into basic information when selecting an item of the displayed list, and managing related data to be displayed in the entire waveform management module 236;
A spectrogram management module 234 for displaying a frequency domain of data when a partial section of data displayed in the entire waveform management module 236 is selected;
An enlarged waveform management module 235 for managing the display of the data area when a partial section of the data displayed in the entire waveform management module 236 is selected; And
A total waveform management module 236 for managing some sections of the data in the case of recording or retrieving a past file, and moving and displaying the slider bar when moving in another section; Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

5. The method of claim 4,
The input / output unit (230)
An execution management module 237 for managing playback, stopping playback, enlarging, reducing, canceling, re-executing, cutting, and storing; Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

5. The method of claim 4,
The input / output unit (230)
A search module 238 for managing a date search, a guardian list search, and a sample database search; Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.

5. The method of claim 4,
A connection unit 240 for generating and displaying a guidance message for the situation according to the diagnosis result by voice and character; Wherein the portable wireless digital electronic stethoscope includes a portable terminal diagnostic system using the portable wireless digital electronic stethoscope.