KR102039752B1 - Multiple eeg measuring device and method - Google Patents

Abstract

An apparatus and method for measuring multiple brain waves are provided. According to an embodiment of the present invention, an EEG measuring apparatus includes: EEG electrodes positioned in a plurality of measurement sites, signal processing units for signal-processing EEG signals output from EEG electrodes in a state separated from EEG electrodes, and signal processing, respectively And a controller for analyzing the EEG signals signaled in the units. As a result, the amplification and filtering of the EEG signal may be performed in a signal processor separated from the EEG electrode, thereby reducing the volume and weight of the EEG electrode.

Description

MULTIPLE EEG MEASURING DEVICE AND METHOD}

The present invention relates to a medical device, and more particularly, to a brain wave measuring apparatus and method for signal-processing and analyzing the brain wave measured by the dry electrode.

EEG measuring apparatus using a wet electrode, due to the inconvenience of applying a gel (for example, clay such as bentonite) to the site for the measurement, the EEG measuring apparatus for dry electrodes appeared.

EEG measuring apparatus using dry electrode measures the EEG by installing a plurality of measurement modules, and there are circuits in each measurement module that can perform amplification and filtering, so that the measurement module is bulky and heavy. There was a lot of inconvenience.

Therefore, there is a demand for a method for reducing weight by simplifying an EEG module.

Korea Patent Publication 10-2011-0040089 (2011.04.20) Korea Patent Publication 10-2001-0083802 (2001.09.03)

The present invention has been made to solve the above problems, an object of the present invention, by transmitting the electroencephalogram measured in the electrode to the signal processing unit is separated from the electrode and amplified and filtered to deliver to the controller and the volume of the electrode portion The present invention provides an apparatus and method for measuring EEG that can reduce weight.

In addition, another object of the present invention is to provide an EEG measuring apparatus and method for more accurately measuring the EEG of the region by treating the adjacent EEG induced when the single channel EEG is extracted with noise.

The EEG measuring apparatus according to an embodiment of the present invention for achieving the above object, the first EEG electrode located in the first measurement site; A second EEG electrode located at the second measurement site; A first signal processor which is distinguished from the first EEG electrode and signals the first EEG signal output from the first EEG electrode; A second signal processor that is separated from the second EEG electrode and signals the second EEG signal output from the second EEG electrode; And a controller configured to analyze the first EEG signal processed by the first signal processor and the second EEG signal processed by the second signal processor.

The first EEG electrode may include an EEG measuring device that generates and outputs a first EEG signal as a differential signal, and the second EEG electrode generates and outputs a second EEG signal as a differential signal.

The first signal processor may amplify and filter a first EEG signal and transmit the same to the controller. The second signal processor may amplify and filter the second EEG signal and transmit the amplified signal to the controller. It may include.

The controller may include an EEG measuring apparatus that removes noise of the first EEG signal with reference to a second EEG signal and removes noise of a second EEG signal with reference to the first EEG signal.

In addition, the EEG measuring apparatus according to an embodiment of the present invention, the third EEG electrode located in the third measurement site; And a third signal processor, which is distinguished from the third EEG electrode and signals the third EEG signal output from the third EEG electrode, wherein the controller includes a first EEG signal, a second EEG signal, and a third EEG signal. It may include an EEG measuring device for analyzing the third EEG signal signal processed by the signal processing unit.

On the other hand, EEG measuring method according to another embodiment of the present invention, the first EEG electrode, generating a first EEG signal by measuring the EEG at the first measurement site; Signal processing the first EEG signal, the first signal processor is separated from the first EEG electrode; Generating, by the second EEG electrode, the EEG signal by measuring EEG at the second measurement site; Signal processing, by a second signal processor separated from the second EEG electrode, the second EEG signal; And analyzing the signal-processed first EEG signal and the signal-processed second EEG signal.

As described above, according to the embodiments of the present invention, the brain wave measured by the electrode is transferred to a signal processor separated from the electrode, amplified and filtered to be transmitted to the controller, thereby reducing the volume and weight of the electrode.

In addition, according to embodiments of the present invention, it is possible to more accurately measure the EEG of the region by treating the adjacent EEG induced when the single channel EEG is extracted with noise.

1 is a schematic configuration diagram of an EEG measuring apparatus according to an embodiment of the present invention,
FIG. 2 is a block diagram showing the configuration of the EEG measuring apparatus shown in FIG. 1;
3 is a flowchart schematically illustrating a controller analysis method according to an embodiment of the present invention.

Hereinafter, an EEG measuring apparatus according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail. The following examples are provided to aid the understanding of the present invention, and the scope of the present invention is not limited to the following embodiments. In addition, the following embodiments are provided to more fully explain the present invention to those skilled in the art, and a detailed description of well-known configurations determined to unnecessarily obscure the technical gist of the present invention will be given. Will be omitted.

1 is a schematic configuration diagram of an EEG measuring apparatus according to an embodiment of the present invention. The EEG measuring apparatus according to the embodiment of the present invention, as shown in Figure 1, EEG electrodes (110-1, 120-1, 110-2, 120-2, ..., 110-n, 120-n), signal processing units 130-1, 130-2, and 130-n and a controller 140.

EEG electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, 120-n are installed at different measurement sites of the patient's head to measure and measure EEG at the corresponding measurement site. The result is transmitted to the signal processing units 130-1, 130-2, and 130-n. Specifically,

1) EEG electrodes 1 (110-1, 120-1) are installed at the measurement site-1 of the patient's head, and measure the EEG at the measurement site-1, and the signal processing unit-1 (130-1) as a differential signal. ),

2) EEG electrodes-2 (110-2, 120-2) are installed at the measurement site-2 of the patient's head, and measure the EEG at the measurement site-2, and the signal processing unit-2 (130-2) as a differential signal. ),

…

n) EEG electrodes-n (110-n, 120-n) are installed at the measurement site-n of the patient's head to measure the EEG at the measurement site-n, and the signal processing unit-n (130) as a differential signal. -n).

The signal processing units 130-1, 130-2, and 130-n are required for the EEG signals received from the EEG electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, and 120-n. Signal processing is performed, and the signal-processed EEG signals are transmitted to the controller 140.

The signal processing units 130-1, 130-2, and 130-n are provided in separate modules separated from the EEG electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, and 120-n. Prepared. Specifically,

1) The signal processor-1 (130-1) is separated from the EEG-1-1 (110-1, 120-1), receives the EEG signal from the EEG-1-1 (110-1, 120-1), amplifies and filtered , To the controller 140,

2) The signal processor-2 (130-2) is divided from the EEG-2-2 (110-2, 120-2), receives the EEG signal from the EEG-2-2 (110-2, 120-2), amplifies and filtered it , To the controller 140,

…

3) The signal processing unit-n (130-n) is divided from the EEG electrodes-n (110-n, 120-n), receives an EEG signal from the EEG electrodes-n (110-n, 120-n), and Amplify and filter, and delivers to the controller 140.

In this case, an amplification amplifier (IA) is used for amplification, and amplification is performed between the electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, 120-n and the controller 140. do.

As shown in FIG. 1, the signal processing units 130-1, 130-2, and 130-n may include EEG electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, 120-n. By implementing a separate module separated from), the size and weight of the EEG electrodes (110-1, 120-1, 110-2, 120-2, ..., 110-n, 120-n) is miniaturized.

The controller 140 analyzes the EEG signals received from the signal processors 130-1, 130-2, and 130-n to determine the patient's condition.

Hereinafter, the operation of the EEG measuring apparatus shown in FIG. 1 will be described in detail with reference to FIG. 2.

2 is a flowchart provided to explain an EEG measuring method according to another embodiment of the present invention. First, the EEG electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, 120-n measure brain waves at different measurement sites of the patient's head (S210). Specifically,

1) EEG-1 (110-1, 120-1) measures the EEG at the measurement site-1,

2) EEG electrode-2 (110-2, 120-2) measures the EEG at the measurement site-2,

…

n) EEG electrode-n (110-n, 120-n) measures the EEG at the measurement site-n.

In addition, the EEG electrodes 110-1, 120-1, 110-2, 120-2,..., 110-n, and 120-n transmit the EEG signals measured in step S210 to the signal processing units 130-1, 130-2, and 130. -n) (S220). Specifically,

1) the EEG-1-1 (110-1, 120-1) transmits the EEG signal to the signal processor-1 (130-1),

2) the EEG-2 (110-2, 120-2) transmits an EEG signal to the signal processor-2 (130-2),

…

n) the EEG electrode-n (110-n, 120-n) transmits the EEG signal to the signal processor -n (130-n).

The signal processing units 130-1, 130-2, and 130-n amplify the EEG signals received through step S220 (S230). Thereafter, the signal processing units 130-1, 130-2, and 130-n filter the EEG signal amplified in step S230 (S240). Specifically,

1) the signal processor-1 (130-1) amplifies & filters the EEG signals received from the EEG-1-1 (110-1, 120-1),

2) the signal processor-2 (130-2) amplifies & filters the EEG signals received from the EEG-2 (110-2, 120-2),

…

n) The signal processor -n (130-n) amplifies & filters the EEG signals received from the EEG electrodes (n-110, n-120).

In addition, the signal processing units 130-1, 130-2, and 130-n transmit the filtered EEG signals to the controller 140 in step S240 (S250).

Then, the controller 140 analyzes the EEG signals received in S250, and determines the state of the patient (S260).

Hereinafter, the process of analyzing the EEG signals by the controller 140 in step S260 will be described in detail with reference to FIG. 3. 3 is a flowchart schematically illustrating a controller analysis method according to an embodiment of the present invention.

First, the controller 140 obtains EEG signals from the signal processors 130-1, 130-2, and 130-n (S261), and removes EEG noise with reference to surrounding EEG signals (S262). Specifically,

1) For the measurement site-1, the EEG electrodes-2 (110-2, 120-2), EEG electrodes-3, ... EEG electrodes-n (110-n, 120-n) to further reference to the EEG signals , Remove the portion overlapping the measurement region-1 with noise to generate a single channel EEG-1,

2) For the measurement site-2, EEG signals measured at the EEG electrode-1 (110-1,120-1), the EEG electrode-3, ... EEG electrode-n (110-n, 120-n) are further referred to. , Removes the portion overlapping the measurement region-2 with noise to generate a single channel EEG-2,

...

n) EEG signals measured at the EEG electrode-1 (110-1,120-1), EEG electrode-1 (110-1,120-1), ... EEG electrode- (n-1) for the measurement site-n For reference, a portion overlapping with the measurement site-n is removed with noise to generate a single channel EEG-n.

Thereafter, the controller 140 generates a plurality of EEG signals by adding pseudo noise to the acquired single channel EEGs (S263). The controller 140 analyzes a plurality of brain wave signals added with pseudo noise to determine a patient's state (S264), and filters the analyzed brain wave to restore the original brain wave (S265).

Although the embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention may be used in the art without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

110-1: electrode 1ch + 120-1: electrode 1ch-
110-2: electrode 2ch + 120-2: electrode 2ch-
110-n: electrode nch + 120-n: electrode nch-
130-1: signal processor 1ch 130-2: signal processor 2ch
130-3: signal processor 3ch 140: controller

Claims (6)

A first dry EEG electrode positioned at the first measurement site;
A second dry EEG electrode located at the second measurement site;
A third dry EEG electrode located at the third measurement site;
A first signal processor which is distinguished from the first dry EEG electrode and signals the first EEG signal output from the first dry EEG electrode;
A second signal processor, which is distinguished from the second dry EEG electrode and signals the second EEG signal output from the second dry EEG electrode;
A third signal processor which is distinguished from the third dry EEG electrode and signals the third EEG signal output from the third dry EEG electrode; And
And a controller configured to analyze the first EEG signal processed by the first signal processor, the second EEG signal processed by the second signal processor, and a third EEG signal processed by the third signal processor.
The first signal processor,
It is implemented as a separate module separated from the first dry brain wave electrode,
The second signal processor,
Implemented as a separate module separated from the second dry EEG electrode,
The third signal processor,
It is implemented as a separate module separated from the third dry brain wave electrode,
The controller,
A portion overlapping with the first EEG signal is removed with noise by referring to the second EEG signal and the third EEG signal, and a plurality of first EEG signals are generated by adding pseudo noise;
A portion overlapping with the second EEG signal is removed with noise by referring to the third EEG signal and the first EEG signal, and a plurality of second EEG signals are generated by adding pseudo noise;
A portion overlapping with the third EEG signal is removed with noise by referring to the first EEG signal and the second EEG signal, and a plurality of third EEG signals are generated by adding pseudo noise;
EEG measuring apparatus characterized in that the state of the patient is determined by analyzing a plurality of first EEG signals, second EEG signals and third EEG signals to which the pseudo noise is added.
The method of claim 1,
The first dry EEG electrode generates and outputs a first EEG signal as a differential signal,
The second dry EEG electrode, EEG measurement device for generating and outputting the second EEG signal as a differential signal.
The method of claim 1,
The first signal processing unit amplifies and filters the first EEG signal and transmits the same to the controller.
The second signal processor, amplifying and filtering the second EEG signal, EEG measuring apparatus for transmitting to the controller.
delete delete Generating, by the first dry EEG electrode, the first EEG signal by measuring EEG at the first measurement site;
Signal-processing the first EEG signal by a first signal processor separated from the first dry EEG electrode;
Generating, by the second dry EEG electrode, a second EEG signal by measuring EEG at a second measurement site;
Signal processing the second brain wave signal by a second signal processor separated from the second dry brain wave electrode;
Generating, by the third dry EEG electrode, a third EEG signal by measuring EEG at a third measurement site;
Signal processing the third EEG signal by a third signal processor separated from the third dry EEG electrode; And
And analyzing the signaled first EEG signal, the signaled second EEG signal, and the signaled third EEG signal.
The first signal processor,
It is implemented as a separate module separated from the first dry brain wave electrode,
The second signal processor,
Implemented as a separate module separated from the second dry EEG electrode,
The third signal processor,
Implemented as a separate module separated from the third dry EEG electrode,
The analyzing step,
Generating a plurality of first EEG signals by removing noise overlapping the first EEG signal with reference to the second EEG signal and the third EEG signal, and adding pseudo noise;
Generating a plurality of second EEG signals by removing noise overlapping the second EEG signal with reference to the third EEG signal and the first EEG signal, and adding pseudo noise;
Generating a plurality of third EEG signals by removing noise overlapping the third EEG signal with reference to the first EEG signal and the second EEG signal, and adding pseudo noise;
And analyzing a plurality of first EEG signals, second EEG signals, and third EEG signals added with pseudo noise to determine a patient's condition.

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