KR101934487B1 - An ECG sensor system with trisection electrode pattern - Google Patents

Abstract

The present invention relates to an electrode-based ECG sensor device that divides an ECG electrode into a third portion and divides the measurement time into three divided electrodes to measure an electrocardiogram. The electrode-based ECG sensor device includes an electrode portion divided into third portions and composed of three split electrodes; And a controller for sequentially selecting the three divided electrodes and measuring the electrocardiogram by one divided electrode.
According to the above-described ECG sensor device, it is possible to more accurately measure the electrocardiogram by measuring the electrocardiogram on each of the divided electrodes by the third division of the ECG electrode.

Description

An ECG sensor system with a trisection electrode pattern

The present invention relates to an electrode-based ECG sensor device of the third degree, in which an ECG electrode is divided into thirds and an ECG is measured by dividing a measurement time into three divided electrodes.

Generally, an ECG (electrocardiogram) sensor is used to measure the electrocardiogram of a person suffering from heart disease or a person who wants to prevent heart disease. Such an ECG sensor processes and analyzes signals measured from an electrode that directly contacts the patient's body, and uses the ECG signal output from the ECG sensor to determine the health state of the measurer.

Recently, as interest in health has increased and applications have been expanded, the health status of the measurer is displayed based on the ECG signal measured by the ECG sensor, or transmitted to the outside through a connection with a communication system, Prevention has become possible.

That is, the ECG sensor device collects and analyzes minute activity currents generated in a subject (for example, the heart of a human body) and electrical changes in the activity currents, etc., so that a predetermined verifier can recognize various biometric information about the subject (Display) in the form of an image. In other words, the biometric testing apparatus collects the biomedical signals by bringing the measuring electrodes into contact with the inspected object and analyzing the change in the voltage induced in the measuring electrodes.

In particular, an electrocardiogram measuring device using a conductive hydrogel adhesive is used to prevent unstable electrocardiogram measurement due to complicated electric potential or impedance caused by unstable contact between the electrode and the skin, while the electrode is brought into close contact with the skin without stimulating the skin. However, when the electrocardiograph is further used for a certain period of time, there is a problem in that the function of the pressure-sensitive adhesive is remarkably lowered.

In order to collect the biological signals, the living body inspection apparatus must physically contact the measurement electrodes on the surface of the body of the subject, and the body of the subject whose motion is to be continued, There is inevitably a change in impedance between the measurement subject of the subject and the measurement electrode. That is, when the motion artifact or the DC offset is introduced into the ECG signal measured by the ECG sensor, it is difficult to accurately grasp the original signal.

Also, in order to measure an electrocardiogram signal, a plurality of electrodes must be used, and each of the electrodes is connected to a measuring instrument through one lead wire. In such a case, the electrodes may not maintain perfect adhesion to the skin every time the subject moves due to a plurality of lead wires, which may cause errors in ECG measurement.

In addition, the electrocardiogram should be measured through a plurality of electrodes due to its characteristics, and the size and arrangement of the electrodes are the most important factors for measuring an accurate ECG signal. However, most of the portable electrocardiographs according to the conventional art currently have only the miniaturization of the electrodes without considering the size and arrangement of the electrodes having the above-mentioned significance. Therefore, it is difficult to measure the ECG signals accurately, Resulting in measurement results.

In order to solve such a problem, a technique has been proposed in which noise is removed by performing signal processing on ECG signals received from a measurement electrode [Patent Document 1]. In addition, a method for compensating for the electrocardiogram sensing signal by compensating for the sensed motion noise signal by constituting an electrode for sensing the motion noise around each electrocardiographic sensor electrode has been proposed [Patent Document 2]. In addition, a technique of oscillating a carrier signal, measuring it with two electrodes, and removing the dynamic noise signal of the electrode using the differential signal is also proposed [Patent Document 3].

However, there is a need for more stable voltage and current measurement techniques for electrocardiogram measurement.

Korean Patent Publication No. 10-2015-0095496 (published on Aug. 21, 2015) Korean Patent Publication No. 10-2010-0104404 (published on September 29, 2010) Korean Unexamined Patent Publication No. 10-2007-0038310 (Published Apr. 10, 2007)

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrode-based ECG sensor device of a third degree, in which an ECG electrode is divided into third portions and an ECG is measured with three divided electrodes by dividing a measurement time .

It is also an object of the present invention to provide a third electrode-based ECG sensor device in which an ECG electrode is divided into thirds and the remaining divided electrodes are used as a ground electrode when an ECG is measured with one split electrode.

In order to accomplish the above object, the present invention provides an electrode-based ECG sensor device of the third aspect, comprising: an electrode part having an electrode divided into third parts and composed of three divided electrodes; And a controller for sequentially selecting the three divided electrodes and measuring the electrocardiogram using one divided electrode.

In the electrode-based ECG sensor device of the third aspect of the present invention, the controller may control the electrocardiogram to measure the electrocardiogram by connecting the remaining divided electrodes other than the selected divided electrode to the ground electrode.

Further, the present invention is characterized in that in the electrode-based ECG sensor device of the third degree, the three divided electrodes are divided into the same size.

Further, in the electrode-based ECG sensor device of the third aspect of the present invention, the three divided electrodes are divided into three regions with respect to the center of the circle, and are formed into sectors having the same internal angle, And both side surfaces of the electrode are separated from each other by a predetermined distance from one surface of the adjacent sectorial split electrode.

Further, the present invention is characterized in that in the electrode-based ECG sensor device of the third degree, the divided electrodes have a rectangular or polygonal shape.

As described above, according to the electrode-based ECG sensor device of the third aspect of the present invention, an ECG electrode can be measured more precisely by measuring the electrocardiogram on each of the divided electrodes.

In addition, according to the electrode-based ECG sensor device of the third aspect of the present invention, since the remaining electrodes of the split electrodes, which are not measured for electrocardiogram, are used as ground, the electrocardiogram can be more accurately detected by measuring the current and voltage more stably Is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall schematic diagram of a system for practicing the present invention. FIG.
2 is a perspective view of a configuration of an electrode unit according to a first embodiment of the present invention;
3 is a connection structure diagram between the electrode unit and the control unit according to the first embodiment of the present invention.
4 is a block diagram of a configuration of a control unit according to the first embodiment of the present invention;
5 is an exemplary view showing a switching state of a switch circuit of a control unit according to the first embodiment of the present invention;
6 to 8 are diagrams showing a division pattern of an electrode of an ECG sensor device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

In the description of the present invention, the same parts are denoted by the same reference numerals, and repetitive description thereof will be omitted.

First, the configuration of the entire system for carrying out the present invention will be described in more detail with reference to Fig.

1, an overall system for practicing the present invention includes an electrode unit 10 configured by dividing an electrode 11 into three parts, an electrocardiographic measurement of an electrode unit 10, And a collecting unit 30 for displaying or collecting data of the control unit 20. The control unit 20 includes a control unit 20,

First, the electrode unit 10 includes an electrode unit main body 11, an electrode 12 provided on one surface of the main unit 11 for detecting an ECG signal, and a connection unit 15 for transmitting the detected signal.

The electrode unit main body 11 forms an adhesive portion on the same surface (or lower surface) where the electrode 12 is provided. Preferably, an adhesive portion is formed in a region other than the region where the electrode 12 is formed. The adhesive portion is for adhering the electrode portion 10 to the skin. The electrode unit main body 11 is made of a nonconductive material so that the electrodes 12 are insulated from each other.

The electrode 12 is an electrode for detecting the electrocardiogram of the skin, and is composed of a copper plate or the like. Preferably, the electrode 12 may further comprise an electrolyte gel composition having skin adhesiveness and electrical conductivity. Also, the electrode 12 is divided into three equal parts with the same area or an area of similar size. The three divided electrodes are spaced apart from each other at regular intervals.

The connection unit 15 is a connector for transmitting a signal to the control unit 20. At this time, connection terminals are formed for each split electrode in order to transmit signals of the divided electrodes.

Next, the control unit 20 selects one of the three divided electrodes of the electrode unit 10 to control the measurement of the electrocardiogram, and receives the measured electrocardiogram signal. In addition, the controller 20 performs signal processing on the received electrocardiogram signal, and then transmits the electrocardiogram data to the collecting unit 30.

That is, the control unit 20 selects the split electrode for measuring the electrocardiogram and the split electrode used as the ground in the electrode unit 10, and controls the electrocardiogram measurement of the electrode unit 10. Preferably, the controller 20 divides the electrocardiogram measurement time into time segments, and cyclically selects the three divided electrodes one by one to allow the electrocardiogram to be measured by the divided electrodes. The remaining divided electrodes are used as ground electrodes.

Therefore, the area of the ground split electrode is formed wider than the area of the split electrode for measuring the electrocardiogram. The ground split electrode serves to prevent the electrocardiogram signal flowing to the split electrode for electrocardiogram measurement from being interfered by the external fine signal. That is, the electrocardiogram signal suppresses interference from external noises, so that a higher quality electrocardiogram signal can be measured. Further, by dividing the electrode into three, and circulating the three divided electrodes to measure the electrocardiogram for each of the divided electrodes, the measurement error caused by the attachment position of the electrode can be reduced.

And receives the electrocardiogram signal detected from the electrode unit 10, and converts the signal into a digital signal or electrocardiogram data. In particular, the control unit 20 includes connection terminals 25 that can be connected to the connection unit 15 of the electrode unit 10 for signal reception.

Preferably, the control unit 20 may be configured to overlap the electrode unit 10.

Also, the control unit 20 is connected to the collecting unit 30 through wired / wireless lines, and transmits the converted signal (or data).

Next, the collecting unit 30 performs additional signal processing on the electrocardiogram signal (or electrocardiogram data) detected by each electrode unit 10, and collects or displays the result.

Next, the configuration of the electrode unit 10 according to the first embodiment of the present invention will be described in more detail with reference to Fig. 2A is a bottom view of the electrode unit 10, and FIG. 2B is a top view of the electrode unit.

2A and 2B, the electrode unit main body 11 of the electrode unit 10 according to the present invention is composed of a lower surface (or a first surface) and an upper surface (or a second surface).

As shown in FIG. 2A, three divided electrodes 12 are exposed on the lower surface of the electrode unit main body 11. The divided electrodes 12a, 12b, and 12c are spaced apart from each other at a predetermined interval.

As shown in FIG. 2B, a connecting portion 15 for connecting to the control unit 20 is formed on the upper surface of the electrode unit 10. The connection portions 15 form connection terminals 15a, 15b and 15c as many as the number of electrodes of the electrode portion 10 and each of the electrode portion connection terminals 15a, 15b and 15c has a split electrode 12a , 12b, 12c, respectively. That is, the electrode connection terminals 15a, 15b, and 15c may be disposed so as to face each other with the split electrode 12a, 12b, and 12c and the electrode unit main body 11 interposed therebetween.

Meanwhile, the split electrodes 12a, 12b, and 12c may further include a conductive gel (not shown). The split electrodes 12a, 12b, and 12c can receive pseudo ECG signals from the above-mentioned subject as the lower surface contacts the body of the subject. The split electrodes 12a, 12b, and 12c may be implemented as electrodes having the same characteristics as electrodes used in a general electrocardiogram measuring apparatus.

In addition, a conductive gel can be applied to the periphery of the electrode portion (in the figure, it is shown that both the electrode portion and the conductive gel application region are included in the split electrode). Since the conductive gel has the nature of a conductor, it can be applied as a means for extending the range of the electrode. That is, the conductive gel also contacts the body of the user to sense the pseudo ECG signal, thereby extending the detection range of the pseudo ECG signal received from the user.

Therefore, by setting the size of the application range of the conductive gel, the pseudo ECG signal detection range of the electrode can be controlled. However, in order to sense the pseudo ECG signal, the adhesive applied to the electrode unit main body 11 may not be applied to the conductive gel and the electrode.

The connection terminals 15a, 15b, and 15c are electrically connected to the corresponding split electrodes 12a, 12b, and 12c, respectively. That is, the connection terminals 15a, 15b, and 15c (not shown) are connected to the controller 20 so that the pseudo ECG signals input through the split electrodes 12a, 12b, and 12c can be transmitted to the controller 20 through the connection terminals 15a, 15b, And the split electrodes 12a, 12b, and 12c are electrically connected to each other.

Next, a connection structure of the electrode unit 10 and the control unit 20 according to the first embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 3, the electrode unit 10 and the control unit 20 are formed with connection units 15 and 25 for signal transmission. At this time, the connection portions 15 and 25 of the electrode portion 10 and the control portion 20 are provided with the same number of connection terminals (or connector means), respectively. The number of the connection terminals may be set to be equal to the number of the electrodes 12 provided on the electrode unit 10.

Three electrode connection terminals 15a, 15b and 15c may be provided on one surface of the electrode unit 10 as an electrode unit connection unit 15. Further, the same number of processing unit connection terminals 25a, 25b, 25c may be provided as a processing unit connection unit 25 on one side of the control unit 20.

The electrode unit 10 and the control unit 20 can be attached to each other through the coupling of the electrode unit connection terminals 15a, 15b, 15c and the processing unit connection terminals 25a, 25b, 25c. That is, the electrode connection terminal 1 15a is coupled to the processing connector connection terminal 1 25a, the electrode connection terminal 2 15b is coupled to the processing connector connection terminal 2 25b, The electrode unit 10 and the control unit 20 can be coupled to each other by being coupled with the processing unit connection terminal 3 (25c).

To this end, the electrode connection terminal and the processing connector connection terminal may be realized in the form of a pair of hook switches which can be coupled to each other. In addition, the electrode unit connection terminal and the processing unit connection terminal may be realized by a conductor that can be electrically connected. Therefore, the electrode unit 10 and the control unit 20 are not only physically coupled but also electrically connected.

Next, the configuration of the control unit 20 according to the first embodiment of the present invention will be described in more detail with reference to FIG.

4, the control unit 20 includes a connection unit 25 connected to connection terminals of the electrode unit 10, three connection terminals 25a, 25b, and 25c, and detection terminals S, G) connected to the signal terminal (S) and the ground terminal (G) for detecting the electrocardiogram signal, a switching control circuit (22) for controlling switching of the switch circuit A circuit 23, and a communication circuit 29 for transmitting the detected signal. In addition, it may further include a signal processing circuit unit 24 for processing the detected electrocardiogram signal.

The connecting portion 25 is composed of three connecting terminals 25a, 25b and 25c. The connection terminals 25a, 25b and 25c are connected to the connection terminals 15a, 15b and 15c of the electrode part and electrically connected to the division electrodes 12a, 12b and 12c of the electrode part 10, respectively.

The switch circuit 21 is a circuit for switching between the three connection terminals 25a, 25b and 25c which are input terminals and the detection terminals S and G which are output terminals. 5 shows each switched case. That is, the switching circuit selects one of the three connection terminals 25a, 25b, and 25c, connects the selected connection terminal to the signal terminal S, and connects the remaining two terminals to the ground terminal G.

The switching control circuit 23 controls the switching of the switch circuit 21. That is, one of the connection terminals is selected and connected to the signal terminal (S), and the remaining terminals are connected to the ground terminal (G). Preferably, the switching control circuit 23 sequentially selects three connection terminals 25a, 25b and 25c and connects them to the signal terminal S, and repeats this operation.

In particular, the switching control circuit 23 divides the measurement time (connection time) at equal intervals and divides each measurement time. For example, if the time period of one cycle for measuring the electrocardiogram is 3 seconds, three connection terminals 25a, 25b, and 25c are sequentially selected and connected to the signal terminal S at intervals of 1 second. Three divided electrodes 12a, 12b and 12c connected to the connection terminals 25a, 25b and 25c are sequentially selected and measured by electrocardiogram signals. As an example, the switching of FIGS. 5A, 5B, and 5C is sequentially performed for 1 second to complete one cycle. That is, the divided electrodes 1, 2, and 3 are sequentially connected to the signal terminal S, and the electrocardiogram measured at each of the divided electrodes is sequentially measured. Then repeat the cycle to measure the electrocardiogram.

Next, the division pattern of the electrode unit 10 according to the first embodiment of the present invention will be described in more detail with reference to Figs. 6 to 8. Fig.

6, an electrode 12 is formed in the electrode unit body 11 of the electrode unit 10, but the electrode 12 is divided into three divided electrodes 12a, 12b, and 12c. Preferably, the three divided electrodes 12a, 12b, and 12c are divided so that their areas are the same. Since the ECG sensor device of the present invention measures electrocardiogram by each of the divided electrodes 12a, 12b, and 12c, it is preferable that they all have the same area in order to satisfy the same condition.

Preferably, the three divided electrodes 12a, 12b, and 12c are spaced apart from each other by a predetermined gap G1. In addition to the split electrodes measured by ECG, the remaining split electrodes are used as ground electrodes. Therefore, the interval between the electrocardiogram measurement split electrode and the ground split electrode is kept constant so that the effect of preventing interference with external fine signals is obtained.

Further, as shown in Fig. 6, the circular electrode is divided into three regions with respect to the center of the circle, and is formed as a sectorial divided electrode having the same internal angle. Then, the divided electrodes of each sector are separated so that both sides thereof are spaced apart from each other by a predetermined gap G1 from one side of the adjacent sectorial split electrodes.

Preferably, the thickness of the electrode is set to 0.3 mm, and the interval between the divided electrodes is set to 2 mm. Further, the radius of each sector electrode is set to 20 mm, and the internal angle is 120 DEG.

7 and 8, the shape of the three divided electrodes 12a, 12b, and 12c can be formed into a polygonal shape such as a quadrangle. The thickness of each divided electrode and the gap G1 between the divided electrodes are set to 0.3 mm and 2 mm, respectively. In addition, it is preferable that the length of the side faces opposing each other between the divided electrodes is set to 20 mm.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

10: electrode part 11: electrode part main body
12: electrode 15:
15a, 15b, 15c: electrode unit connection terminals
20: control unit 21: switch circuit
22: switching control circuit 23: detection circuit
24: signal processing circuit section 25:
25a, 25b, 25c: control unit connection terminal 29: communication circuit
30: collecting section

Claims (5)

In the third electrode-based ECG sensor device,
An electrode section divided into three parts and composed of three split electrodes; And
And a controller for sequentially selecting the three divided electrodes and measuring the electrocardiogram using one divided electrode (hereinafter referred to as a measuring electrode)
The control unit controls the electrocardiogram to measure the electrocardiogram by connecting all the remaining two divided electrodes except for the measuring electrode to the ground electrode so that the area of the ground electrode is two times wider than the area of the measuring electrode,
The three divided electrodes are divided into equal sizes,
The three divided electrodes are divided into three regions on the basis of the center of the circle, and are formed in a fan shape having the same internal angle. The divided electrodes are arranged at regular intervals from one side of the adjacent fan- And the second electrode is separated from the second electrode.
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