KR20160141288A - Method for measuring accuracy and balance of left and right bio-signal - Google Patents

Abstract

The present invention relates to a method for measuring accuracy and balance of a left bio-signal and a right bio-signal. The objective of the method according to the present invention is to evaluate accuracy of a measured signal and left and right body balance, by measuring and comparing bio-signals like PPG and ECG of two channels measured at both hands such as a left finger, a right finger, a palm, and a wrist of an examinee at the same time. The objective of the present invention is achieved by including: a process of measuring each bio-signal through a sensor attached to a part of a left-side and right-side body of the examinee; a process of detecting R-R intervals (RRI) from each bio-signal measured through the sensor; and a process of calculating left and right balance and accuracy of the examinee in accordance with the detected RRI value.

Description

[0001] The present invention relates to a method for measuring accuracy and balance of left and right bio-signals,

The present invention relates to a method for measuring the accuracy and balance of left and right vital signs measured by a subject, and more particularly, to a method for measuring two-channel optical pulse waves (PPG) and electrocardiogram (ECG: Electrocardiography), and comparing the measured signals with each other to evaluate the accuracy of the measured signals and the left and right body balance.

Ubiquitous healthcare service (U-healthcare service), which is a combination of IT technology and medical information technology, is not limited to single treatment or treatment at hospitals, It is now possible to monitor patients remotely anywhere, anytime in real life without limit of space.

Conventionally, as disclosed in Korean Patent Laid-Open Publication No. 10-2013-0010207 (published on Jan. 31, 2013), a health state and a stress state of a user are analyzed using a pulse wave (PPG) and an electrocardiogram (ECG) And displays the determined non-restricting bio-signal, and transmits the detected non-restricting bio-signal to the image display unit to reproduce information, images and music set according to the health and stress of the user.

As disclosed in Korean Patent Registration No. 10-1006534 (Published on Jan. 11, 2011) by another prior art, a stress monitoring apparatus using an electrocardiogram (ECG) is an electrode for collecting electrocardiogram data attached to a body, electrocardiogram data collected by the electrode A signal processor for calculating a stress index by analyzing heart rate variability (HRV) signals at predetermined time intervals by reading the electrocardiogram data of the memory and transmitting the stress index to a user's mobile communication terminal The system is designed to measure stress in real time objectively and share it with the hospital medical care system. It can be applied to various diseases related to stress such as diabetes, myocardial infarction, digestive dysfunction, and depression, This will help prevent disease worsening. There is an effect that can be.

That is, FIG. 1 is a diagram schematically showing the overall configuration and operation of a stress monitoring apparatus using electrocardiogram measurement according to the related art, wherein the stress monitoring apparatus 10 using electrocardiogram measurement comprises an electrode 11, The electrode 11 is attached to the user's body.

Here, the stress monitoring device 10 is manufactured in a size that is easy to carry, and the electrocardiogram data collected through the electrode 11 is recorded in real time to analyze the HRV signal, calculates the stress index, Through the display window.

The stress index is transmitted to the user's mobile communication terminal 20, that is, the mobile phone, and the mobile phone transmits the received stress index again to the server built in the hospital wirelessly.

That is, according to the conventional arts, the electrocardiogram is measured by wrist-worn as in the case of a watch type, or the electrode is attached near the heart to measure and monitor the electrocardiogram remotely.

Such a 1-channel electrocardiogram measuring method as in the prior art has a problem in that it is impossible to judge a subject having different body balance degrees on the left and right sides and can not judge an error signal due to a malfunction such as a contact error of an electrode, Is lowered.

Accordingly, in order to solve the problems of the prior art, the present invention provides a method and apparatus for simultaneously measuring bio-signals such as two-channel PPG and ECG measured in both hands such as left and right fingers, palm and cuff of a subject, The present invention provides a method for measuring the accuracy and balance of left and right biosignals for evaluating accuracy and left and right body balance.

In order to accomplish the object of the present invention, the process of measuring the accuracy and balance of left and right biomedical signals includes a first process of measuring biomedical signals through sensors attached to left and right body parts of a subject, respectively; A second step of detecting RRI (R-R Intervals) in each bio-signal measured through the sensor; And a third step of calculating left and right balance and accuracy of the subject according to the detected RRI value.

Here, the first process measures biomedical signals in each of the left and right fingers, the palm or the wrist of the subject using two channels, and the bio-signals measured through the sensor are photo-plethysmography (PPG) and electrocardiography Including simultaneous measurements.

In addition, the ECG acquires a signal in the left and right channels by the Lead 1 method and acquires a signal in which the polarity is inverted in the other channel, and obtains amplitude, time And analyzing the delay to determine the left and right balance of the subject.

In the third step, the left and right side blood vessels and right and left side balances are determined through time series and frequency series analysis and amplitudes in the PPG signals of the left and right two channels of the obtained subject.

The method of measuring the accuracy and balance of left and right biomedical signals according to the present invention is a method of simultaneously measuring bio-signals such as two-channel PPG and ECG measured in both hands such as left and right fingers, palm and cuff of a subject, The accuracy of the measured signal and the left and right body balance can be diagnosed and evaluated.

FIG. 1 is a diagram schematically showing an entire structure and operation of a stress monitoring apparatus using electrocardiogram measurement according to the related art,
FIG. 2 is a configuration diagram of a bio-signal measuring apparatus for implementing a method of measuring the accuracy and balance of left and right bio-signals according to an embodiment of the present invention,
FIG. 3 is a detailed block diagram of the bio-signal collecting unit in FIG. 2,
FIG. 4 is a flowchart of a process of measuring the accuracy and balance of left and right biosignals according to an embodiment of the present invention,
5 is a conceptual diagram for explaining the left and right PPG and ECG measurement of the subject according to the embodiment of the present invention,
6 is a waveform diagram showing an embodiment of ECG and PPG error occurrence according to an embodiment of the present invention,
7 is a waveform diagram for analysis in a central processing unit according to an embodiment of the present invention.

The detailed configuration and operation of the accuracy and balance measurement process of the left and right bio-signals according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of an apparatus for measuring the accuracy and balance of left and right biomedical signals for realizing the present invention. The apparatus includes a signal collecting unit 110 for measuring biomedical signals of two left and right channels of a palm, a finger, A signal processing unit 120 for extracting ECG and PPG signals from the biosignals of each of the two channels acquired by the signal collecting unit 110 and an ECG and PPG signals of the two channels acquired by the signal processing unit 120, A radio receiver 210 for receiving the ECG and PPG signals transmitted from the bio-signal measuring unit, and a radio receiver for receiving the ECG and PPG signals transmitted from the radio receiver 210, A central processing unit 220 for analyzing the two channels of the ECG and the PPG to determine the left and right balance and the accuracy, a database 230 for storing analysis and judgment results through the central processing unit 220, The analysis and judgment results are displayed on the screen through the device 220 Consisting of a screen display section 240 is composed of a bio-signal analysis device (200).

The bio-signal measuring unit 100 is configured to be attached to a part of the body of the examinee and to measure the electrodes by contacting the electrodes to the left, right, palm, or wrist of the subject.

Here, the bio-signal analyzer 200 includes a smart mobile device such as a smart phone or a smart pad equipped with an analysis and diagnosis program, or a diagnostic computer.

The bio-signal measuring unit 100 and the bio-signal analyzer 200 are configured to transmit bio-signals using a wireless communication scheme such as Bluetooth, ZigBee, WiFi, or Z-Wave.

FIG. 3 is a detailed block diagram of the signal collecting unit shown in FIG. 2, and shows a detailed block diagram of the signal collecting unit in FIG. 2, in which two channels ECG (ECG 1ch, ECG 2ch) and PPG (PPG 1ch, PPG 2ch) The left ECG sensor 111 is obtained by the 'Lead I' method, which is measured in both arms, and the right ECG sensor 112 is formed by the electrodes (+, -) and the ECG sensors 111 and 112, And the PPG sensors 113 and 114 are configured to simultaneously measure the same fingertip of the left and right fingertips at the same position. .

The operation of the present invention will be described in more detail with reference to FIGS. 2 to 5. FIG.

FIG. 4 is a flowchart of a process of measuring the accuracy and balance of left and right bio-signals according to an embodiment of the present invention. The ECG sensors 111 and 112 and the PPG sensor 113 114, and starts measurement of the living body signal from each sensor.

Each of the bio-signals measured by the signal collecting unit 110 is extracted from the left and right sides of the subject as shown in FIG. 5 by the signal processing unit 120, and the bio-signals (ECG 1ch, ECG 2ch) (PPG 1ch, PPG 2ch) And transmits it to the biological signal analysis apparatus 200 through the wireless transmission unit 130.

The bio-signal analyzing apparatus 200 receives each of the bio-signals (ECG 1ch, ECG 2ch) (PPG 1ch, PPG 2ch) through the wireless receiver 210 and then starts analysis at the central processing unit 220 do.

First, the central processing unit 220 calculates respective RRIs from the received biological signals (ECG 1ch, ECG 2ch) (PPG 1ch, PPG 2ch), and if the calculated four RRIs are different, If the four RRI values are all different from each other, the median value is calculated and used, thereby improving the accuracy.

Also, as shown in FIG. 6, when an abnormal RG interval of the ECG occurs and PPG signal abnormality occurs through PPG signal monitoring, for example, when the R peak value is not detected in a normal signal form, Is detected as a lead failure, it is excluded from the signal analysis.

If the RRIs calculated by the central processing unit 220 are the same, the biological signals (ECG 1ch, ECG 2ch) (PPG 1ch, PPG 2ch) are compared and analyzed.

First, the central processing unit 220 generates a waveform

When the left and right ECG signals (ECG 1ch, ECG 2ch) are compared and the two ECG signals are not inverted correctly and the amplitude, time delay, and RRI are different, the left and right balance of the subject is diagnosed.

The central processing unit 220 analyzes and compares time series and frequency series analysis and amplitude of the PPG (PPG 1ch, PPG 2ch) received via the left and right PPG sensors 113 and 114, , And left and right balance such as the right vascular state.

In addition, the central processing unit 220 may calculate PTT (Pulse Transit Time) or PAT (Pulse Arrival Time) using each bio-signal (ECG 1ch, ECG 2ch) (PPG 1ch, PPG 2ch) Thereby providing a continuous change in blood pressure.

At this time, four PPTs or PATs calculated from left and right ECG signals (ECG 1ch, ECG 2ch) and left and right PPGs (PPG 1ch, PPG 2ch) can be calculated. The accuracy can be improved.

If all four values are different, use the median.

Meanwhile, the central processing unit 220 stores the values calculated and diagnosed in the respective processes in the database 230, and displays them on the screen through the screen display unit 240.

As described above, the embodiment of the method of measuring the accuracy and the balance of the left and right bio-signals according to the embodiment of the present invention has been described, but it is possible to modify various embodiments of the present invention.

100: biological signal measurement unit 110: signal collection unit
120: signal processor 130: radio transmitter
200: biological signal analyzer 210: wireless receiver
220: central processing unit 230: database
240:

Claims (10)

A first step of measuring a living body signal through a sensor attached to a part of the left and right body parts of the subject, respectively;
A second step of detecting RRI (RR Intervals) in each bio-signal measured through the sensor; And
And calculating a left-right balance and an accuracy of the subject according to the detected RRI value. The method according to claim 1,
Wherein the first process measures the bio-signals on each of the left and right fingers, the palm, or the wrist of the subject in each of the two channels. 3. The method according to claim 1 or 2,
Wherein the bio-signal measured through the sensor in the first step includes at least one of PPG (Photo-Plethysmography) and ECG (Electrocardiography), and simultaneously measures the bio-signal. The method of claim 3,
Wherein each of the ECG signals is acquired in a Lead I method measured in the left and right arms, and a signal in which polarities are inverted from each other is obtained. The method of claim 3,
If the PPG signal is abnormal even if the RRI interval of the ECG is longer than the PPG signal by monitoring the PPG signal in the third step, it is determined that the PPG signal is a contact error. The method according to claim 1,
Wherein the third step determines the left and right balance of the subject by analyzing amplitude and time delay of the ECG signals of the left and right two channels of the subject. The method according to claim 1,
The third step is to determine the left and right vascular states and the left and right balance through time series and frequency series analysis of the PPG signals of the left and right two channels of the subject and amplitude, How to measure balance. The method according to claim 1,
Wherein the third step calculates PTT (Pulse Transit Time) or PAT (Pulse Arrival Time) using each ECG and PPG of the two channels on the left and right sides of the obtained subject. . 9. The method of claim 8,
Wherein the PTT measures and calculates the ECG and the PPG at the same time in the third step, and calculates the change in the continuous blood pressure. 10. The method according to any one of claims 1 to 9,
Wherein the third step is a step of receiving the bio-signal transmitted from the sensor and performing the bio-signal in the bio-signal analyzing apparatus.

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