KR20080090289A - Apparatus and methods for single-channel portable wireless ecg monitoring device - Google Patents

Abstract

A single-channel portable wireless ECG(ElectroCardioGram) monitoring device and a measuring method thereof are provided to diagnose a disease by supplying a doctor with an ECG signal detected when an abnormal symptom is expressed. An ECG sensor unit detects an ECG through two electrodes(305f) in contact with fingers of a user(350) and one electrode(305c) in contact with a chest of the user. An ECG signal detection unit(400) processes a single channel ECG signal detected from the ECG sensor unit with an analog signal. A control unit(450) converts the single channel ECG signal into a digital signal, stores the converted digital signal, extracts a distinguishing mark from the single channel ECG signal through operation of a stored analysis program, determines irregularity of a rhythm from the extracted distinguishing mark, and controls transmission of the stored ECG signal to an external device(470). A display unit(111) displays the single channel ECG signal with an ECG waveform according to control of the control unit in real time.

Description

Apparatus and Methods for single-channel portable wireless ECG monitoring device}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the use of an electrocardiogram, which is a change in potential generated and lost during the transmission of electrical signals in the heart, wherein the three electrodes are attached to a portable device without the use of a gel. A short-channel portable wireless ECG measuring device capable of presenting ECG waveform to a user by acquiring, analyzing and storing ECG signals at the time when a disease is suspected by contacting the chest and transmitting the stored ECG waveforms to a computer or a mobile communication device (hereinafter, Abbreviated as "electrocardiograph".

Sudden death is so easy to find and a ten minute difference determines life and death. Sudden death can cause death even within an hour, usually in healthy people. Heart disease and cerebrovascular disease are the number one cause of death in Korea. Sudden exercise, excessive smoking, and excessive cholesterol causes the heart to lose blood quickly and ischemia occurs. The risk of sudden death increases. In addition, a number of important adult diseases include hypertension, diabetes, obesity, arteriosclerosis, heart disease, dyslipidemia, etc., which causes severe stroke, cancer, and other incurable diseases. The incidence of heart disease increases with the decrease in physical activity and dietary changes in the process of developing into an industrialized society, but the importance of managing and diagnosing heart disease is increasing with the rapid aging society. . These heart diseases are classified as an important disease that causes all other diseases, and one of the important diagnostic methods is to detect abnormal activity of the heart by measuring ECG.

The heart has the ability to beat itself, which is the only organ that can beat with rhythm automatically until it dies in the fetus, and it acts as a pump that spins blood throughout the body by repeating contraction and relaxation. Provide oxygen and nutrients to each tissue. Arrhythmias that prevent the heart from contracting and relaxing regularly if the electrical signal that is transmitted to the heart muscle contracts or relaxes first in a location other than the normal pathway, or if the transmission of this electrical conduct occurs irregularly. (arrhythmia) occurs. Arrhythmia is a variety of types and complex, asymptomatic and hemodynamic disorders do not impair the symptoms, but dizziness, fainting, and other symptoms, if not appropriate emergency measures can occur immediately die. Such an arrhythmia can be diagnosed by measuring the ECG and determining whether a normal signal is being transmitted to the heart or where an abnormality is occurring in the heart.

Arrhythmias may occur frequently due to changes in the body's condition without abnormalities in the heart itself, and in this case, arrhythmia itself does not mean heart disease without special causes, so even if the arrhythmias are present, the body may function almost without any problems. However, such arrhythmia can be expressed in a sudden serious condition without notice, so it is necessary to consult a cardiologist by measuring the cardiac activity and presenting the cardiac condition to a specialist whenever there is an abnormality.

There are several methods of portable ECG, and one of them is known as Holter ECG, a test that attaches an electrode to the chest, connects to a portable recorder, records more than 24 hours during daily activities, and analyzes. In addition to Korean Patent Application No. 1986-0002744 (portable ECG recorder), registration number 10-0548967 (Holter device) and registration number 10-0356421 (portable ECG measuring device) are disclosed.

However, the electrocardiogram measuring device according to the prior art is not widely used due to inconvenience and troublesome use and high cost for general application to all patients. Moreover, if there is no special symptom within 24 hours, there is a big disadvantage that it should be used continuously until it becomes useless or detects symptom expression.

Therefore, the exercise exercise in the hospital provides an artificial load on the heart and uses an exercise load test that detects the ECG waveform at that time and checks for abnormalities in the heart. The abnormality may not appear.

After all, there is a need for a device that can be carried by the general public in a convenient way and can measure and store the ECG directly during daily life, before and after exercise, or when an abnormality appears. Electrocardiogram for such a routine self-examination is to detect the ECG by contacting the electrode to the hand or foot only when necessary even if not all the electrodes are attached to the chest.

Related patents include registration number 10-0356421 (portable electrocardiogram measuring device), which is not suitable for carrying around while being restricted to the measurement site because the part contacting the electrode must use both hands and feet. .

In addition, there is a Republic of Korea Patent Publication No. 10-2006-0000080 (electrocardiogram measuring portable terminal) and only when you want to measure the ECG contact the three electrodes attached to the portable device to the right and left fingers respectively to detect the ECG signal It is configured in the form. However, when detecting the ECG using only a finger, not only the direction of the user's heart vector but also when the user's skin is dry, the detection of the signal is very weak. Will have limited practical utility.

That is, even in the case of a device and a method for easy carrying and measuring, it should be made clear that the finger and the chest should be used to apply the electrode in order to detect an accurate ECG signal. In addition, it is important not only that the user can judge the diagnosis result of the detected waveform, but also that the measured waveform is presented to the clinician without distortion so that it can be stored and output on the device for accurate diagnosis by the clinician. something to do.

As mentioned above, there is no doubt that the measurement of ECG provides important diagnostic information, and you should visit a hospital as soon as symptoms of sudden death appear. When this happens, it is time to develop a portable wireless ECG measurement and storage device that can be used as a more accurate diagnostic data by measuring and storing accurate ECG and presenting it to a specialist at a hospital visit.

In order to realize the above technology, the problem of selecting and placing a sensor to carry out ECG measurement in a short time when carrying it in ordinary times, analog processing of the sensor output for accurate ECG signal detection, data storage and basic waveforms Problems of digital signal processing algorithms for analysis, data transmission for transmitting and outputting stored signals to PCs or other communication terminals, power supply problems for long-term use, and problems that are convenient and portable. It has an element to solve.

The technical problem to be achieved by the present invention is to use three dry electrodes that do not use a gel that is integrated into the device, of which two electrodes are in contact with the finger and the other electrode is in contact with the chest form The present invention provides a short channel portable wireless electrocardiogram measuring apparatus and method for displaying an electrocardiogram signal and analysis information for a predetermined time and transmitting the stored electrocardiogram signal and analysis information to an external device connected thereto.

Short channel portable wireless electrocardiogram measuring apparatus for achieving the object of the present invention is an electrocardiogram measurement and storage device for detecting an electrocardiogram signal by contacting the electrode attached to the portable device to the user's finger and chest, the user's finger An electrocardiogram sensor unit for detecting an electrocardiogram through two electrodes in contact with an electrode and a single electrode in contact with a chest, an electrocardiogram signal detector for analog signal processing of a short channel electrocardiogram signal detected by the electrocardiogram sensor unit, and the electrocardiogram signal Converts and stores the short channel ECG signal from the detector into a digital signal, extracts feature points from the short channel ECG signal by calculation of a stored analysis program, and determines rhythm irregularity from the extracted feature points, and stores the ECG signal. Control unit to control the transmission to the external device And a display unit 111 displaying the EKG waveform in real time under the control of the controller.

Short channel portable wireless electrocardiogram measuring method for achieving the object of the present invention is to measure and analyze the ECG signal from the finger and chest of the user through the finger and chest electrode provided in the short channel portable wireless ECG measuring unit to the display unit A method of measuring an electrocardiogram, comprising: starting an electrocardiogram signal measurement from a finger and a chest that are in contact with electrodes for a finger and a chest provided in an electrocardiogram measuring device, and the values selected as a user manipulates an external input key; Applying to an external input, processing the measured analog electrocardiogram signal to an analog signal, converting and inputting the digital signal to the controller, applying a digital low pass filter to the electrocardiogram signal converted to the digital signal, and trending Digital signal processing including cancellation after display And, if the detection of the ECG signal for the predetermined time is completed, analyzing the ECG signal, and displaying the analyzed result.

In the short-channel portable wireless ECG measuring apparatus and method according to the present invention, the user carries the ECG measuring device at normal times, and the user directly detects the ECG signal at the time of the occurrence of abnormal symptoms by using the same and automatically analyzes the ECG signal. It is stored and provided at a later hospital visit to receive accurate diagnosis and prescription.Therefore, a 12-lead electrocardiogram or a 24-hour continuous electrode can be used to have a cardiac disease that can lead to sudden death but no abnormality during the hospital visit. Overcoming the shortcomings of Holter ECG, which must be attached and measured, can be used as a health-related device that can actively manage heart disease.

Hereinafter, the configuration and operation of a short-channel portable wireless ECG measuring apparatus according to the present invention and a method of analyzing, storing and transmitting an electrocardiogram performed by the apparatus will be described with reference to the accompanying drawings.

1 is a perspective view showing an embodiment of a short channel portable wireless ECG measuring apparatus according to the present invention is a final form of the present invention.

As shown in the drawing, the chest electrode 305c on the opposite side of the ECG measuring apparatus 300 in a state in which the user touches one finger electrode 305f attached to the ECG measuring apparatus 300 with one hand. Touches the chest opposite to the hand that touched the finger, and drives the ECG device 300 using the power button 101, the menu selection button 103, and the menu navigation button 105. The signal detected through the electrocardiogram measuring apparatus 300 is an electrocardiogram signal and is displayed through the display unit 111 located in front of the electrocardiogram measuring apparatus 300 in real time. The ECG signal measured by the ECG device 300 is stored in the internal memory of the ECG device 300, and the stored signal may be transmitted to an external PC or a communication terminal using a USB terminal or a Bluetooth protocol.

That is, the ECG signal stored in the internal memory is transmitted to a computer or a communication terminal by using a USB terminal by wire and a Bluetooth protocol by wireless.

2 is a front view (FIG. 2A), a left side view (FIG. 2B), a right side view (FIG. 2C), a bottom view (FIG. 2D) of the ECG measuring apparatus 300 of FIG. 1 according to the present invention. Including one content, in order to measure the ECG signal using the ECG measuring device 300,

1) Press the power button 101 located on the upper left side of the electrocardiogram measuring apparatus 300 to apply power to the electrocardiogram measuring apparatus 300.

2) By pressing the menu navigation button 105 and the menu selection button 103 in the upper right front, the ECG measuring apparatus 300 is switched to the measurement mode.

3) While the finger electrode 305f is in contact with one hand, the chest electrode 305c is in contact with the chest opposite to the hand in contact with the finger, and the menu selection button 103 is pressed to press the ECG device 300. ).

4) The electrocardiogram signal detected through the display unit 111 of the electrocardiogram measuring apparatus 300 appears, and the measured electrocardiogram signal is the RAM (FIG. 3 of FIG. 3) of the controller of the electrocardiogram measuring apparatus 300. 3, 455). The stored data are computed through the series of processes of FIG. 7, and then the result of the regularity of the ECG rhythm is displayed on the display 111. After the measurement, the USB terminal 107 or the Bluetooth protocol can be used for transmission to a PC or a communication terminal.

Electrocardiogram signals, which are expressions of action potentials along the neurotransmission pathways of the heart, are detected through electrodes 305f and 305c constructed in the present invention, which are transmitted to the ECG signal detector 400 (FIG. 3).

The ECG sensor unit is made of a material that is in contact with the human body and a good electrical conductivity, and in order to detect the correct ECG signal in all cases, the two fingers to contact two fingers on the left side of the ECG measuring device 300 The finger electrode 305f is exposed, and one chest electrode 305c is exposed on the opposite right side, and each finger and chest electrode is a dry electrode that does not require gel and is integrally formed with the ECG measuring device. do.

3 is a block diagram of a short channel portable ECG measuring apparatus according to the present invention.

Referring to the configuration of the block diagram shown in FIG. 3, the ECG signal of the short channel is measured from the user 350 and the electrodes 305f and 305c measuring the ECG signal. The electrocardiogram signal measured from the electrocardiogram electrodes 305f and 305c is removed by the electrocardiogram signal detector 400 and removes signal components that are not necessary for analysis, such as power supply noise, and amplifies the signal so that the signal is not saturated. The ECG signal processed as an analog signal is input to an analog input terminal of the A / D converter 451 of the controller 450, converted into a digital signal, and stored in the RAM 455. The ECG signal stored in the RAM 455 passes through the digital signal processor (DSP) 453 by an analysis program stored in the ROM 457, and the analysis result is displayed on the display 111. It is stored in a flash memory 459. The stored ECG signal and the analysis result value may be transmitted to an external device 470 such as a PC or a communication terminal using the interface unit 150 such as a USB terminal.

4 is a circuit diagram for setting a constant voltage power supply and a reference voltage including a battery reverse current prevention circuit for driving a short channel portable wireless ECG measuring apparatus according to the present invention.

Looking at the configuration of the circuit diagram shown in Figure 4, when the reverse current flows into the electrocardiogram measuring apparatus 300 according to the present invention, the electronic component constituting the ECG signal detector (400 of FIG. 3) and the controller (450 of FIG. 3) Battery reverse current prevention circuit 11 to prevent damage to the device (s), constant voltage converter circuit 13 for supplying stable power to the device, and a single power supply to set the reference voltage for setting the reference voltage of the device. It consists of a circuit 15.

When the battery reverse current prevention circuit 11 connects the power to the electrocardiogram measuring apparatus 300 according to the present invention, a reverse current which may be connected to the device by reversing the polarity of the battery or caused by a system error has an electrocardiogram signal detection unit ( 3 is a protection circuit for preventing damage to the electronic component (s) that may occur when applied to 400 and the control unit (450 of FIG. 3). The reverse current prevention circuit 11 blocks the application of power to the circuit when a reverse current flows into the ECG device 300 using a transistor, thereby preventing the ECG signal detection unit 400 of FIG. 3 and the control unit 450 of FIG. 3. ) To prevent damage to the electronic component (s) constituting.

In the constant voltage conversion circuit 13, the ECG signal detector (400 of FIG. 3) and the controller (not shown) are always connected to the same DC power at least above the minimum power, in case the power supplied from the battery does not operate stably by thermal noise or shock. It can be supplied to the circuit (450) of FIG. The electrocardiogram measuring apparatus 300 according to the present invention uses an electric power converted by the constant voltage converting circuit 13 to perform electronic component (s) such as an electrocardiogram signal detector (400 of FIG. 3) and a controller (450 of FIG. 3). Since it is driven, the electronic component (s) are selected and a circuit is configured in consideration of the current consumption of the electronic component (s) used therein and the minimum power supply.

As for the reference voltage setting circuit 15, all of the analog input signals that can be received by the controller (450 in FIG. 3) are single power supply signals, whereas the electrocardiogram signals to be measured represent both power supply components, and the voltage level is 0V. Since the signal of the negative component may be removed based on the point of phosphorus, the reference of the measured signal is raised above a certain voltage level so that the signal to be removed is not generated. Since the ECG sensor units 305f and 305c and the ECG signal detector 400 of FIG. 3 are low power types, a reference voltage of the circuit is simply set using an operational amplifier. The reference voltage setting is set by the ratio R1: R3 coupled to the positive input of the operational amplifier.

FIG. 5 shows a circuit diagram of an ECG signal detector for analog signal processing of ECG signals measured from the chest and finger electrodes 305f and 305c used in the ECG measuring apparatus 300 according to the present invention. Looking at the configuration,

The electrocardiogram signal is a signal that is shown by converting the action potential inside the heart measured by the three electrodes (305f, 305c) into a voltage, each of the three electrodes (+) polarity, (-) polarity, ground (Ground) ). Ground provides the reference point of the signal for the output value, and the ECG signal measured from the (+) and (-) electrodes is the common phase removal ratio (CMRR) that removes the noise of the frostbite component flowing through the human body. A differential amplifier 41 having a high rejection ratio is used to remove noise corresponding to in phase and to amplify only the potential difference between the two electrodes. The initially amplified signal includes a high pass filter 43 having a cutoff frequency of 1 Hz to block low band noise of 1 Hz or less, and a fourth-order low pass filter 45 having a cutoff frequency of 30 Hz to block high band noise of 30 Hz or more, And a notch filter 47 for removing noise due to a commercial frequency (50/60 Hz) flowing through the electrode to remove noise unnecessary for analysis. After the second signal is amplified by the inverted amplifier circuit 49 so that the signal from which the noise is removed is not saturated, the analog input of the A / D converter (451 of FIG. 3) of the controller (450 of FIG. 3) is performed. It is input to the terminal and converted into a digital signal.

6 is a circuit diagram illustrating a control unit 450 including the input units 101, 103, 105, the status display unit 107, and the display unit 111 of the electrocardiogram measuring apparatus 300 according to the present invention.

Referring to the circuit diagram shown in Figure 6, in the electrocardiogram measuring apparatus according to the present invention, the power button 101 used to apply power to the device, the operation buttons (103, 105) for operating the drive of the device, the device is driven Status display LED 107 for indicating the status, the display unit 111 for displaying the ECG signal and the analysis result measured by the present invention, used when connecting the stored ECG signal and analysis results with an external device such as a USB terminal And a control unit 450 for digitally converting and analyzing the signal measured from the ECG signal detector.

Referring to the circuit diagram shown in FIG. 6, the electrocardiogram measuring apparatus 300 according to the present invention uses the controller 450 to store data and programs and to perform signal processing.

Drive the device using the power button 101 used to apply power to the electrocardiogram measuring device according to the present invention, the status display LED (103, 105) for displaying the power status, data transmission status, etc. of the device The status of the device is shown.

Control by using a microcontroller chip with a built-in RAM (455 of FIG. 3) and ROM (457 of FIG. 3) that can store the analysis program and the data collected from the ECG measuring apparatus according to the present invention .

The controller 450 receives the ECG signal output from the ECG sensor from the ECG signal detector and performs digital conversion, and is stored in the RAM of the controller 450 (455 of FIG. 3). The ECG signal stored in the RAM (455 in FIG. 3) displays the result analyzed by the analysis program stored in the ROM (457 in FIG. 3) on the display unit 111, and flash memory (Flash Memory) (FIG. 3). 459). In addition, the measured ECG signal and the stored ECG signal and the analysis result value may be transmitted to an external device (470 of FIG. 3) such as a PC or a communication terminal using the interface unit 150 such as a USB terminal.

On the other hand, data processing input to the controller 450 is possible internally, but memory mapping is required to expand the data storage memory and to connect the LCD for display. For memory mapping, the address / data bus must be used. The AVR uses address (16-bit) / data (8-bit) type, and since the lower address and data use the same pin, the latch and the data are used by the latch 73. Disconnect. In order to memory-mapped the data storage memory and the LCD, a chip selecting signal must be generated. For this purpose, a signal is generated using the decoder 75.

7 is a flowchart illustrating a measurement and analysis method of the ECG measuring apparatus 300 according to the present invention. Looking at the flow chart shown in Figure 7, using the electrocardiogram measuring apparatus 300 according to the present invention, when the electrode and the electrode contact the finger and chest measurement (F1) starts, the power button (101 in Figure 2), menu selection The values manipulated by the button 103 (FIG. 2) and the menu navigation button 105 (FIG. 2) are applied to an external input (103, 105 of FIG. 3) of the control unit 450 (FIG. 3) (F3), and the ECG signal. Performs analog signal processing (F7). The ECG signal processed by the analog signal is input to an analog input terminal of the A / D converter (451 of FIG. 3) of the controller (450 of FIG. 3) and converted into a digital signal (F9).

Applying a digital lowpass filter to the ECG signal converted into a digital signal, and after passing through the digital signal processing (F11) including the trend removal (F11) and display the ECG signal (F12), the detection of the ECG signal for a certain time When complete, analyze the ECG signal.

In the digital signal processing (F11), the high pass filter is applied to the low pass filter again and the derivative is performed to occupy a sudden change in the ECG signal. Since the differential signal is weak in magnitude, all the data points are squared to make the portion corresponding to the R point stand out. After that, if the moving average is performed, a portion of one period of the ECG signal appears large.

In order to detect a feature point (F13) from the signal that has undergone such a series of processes, if an appropriate threshold value is set and the highest point is found at a portion larger than the threshold value, the point means the R point of the ECG signal and the circle corresponding to the highest point. The R point can be found by checking the data in the ECG signal.

After finding the point R, if a certain section is defined before and after the point R, and the derivative is detected to detect the intersection with the zero point, the zero crossing point before the R point becomes the Q point, and the zero crossing point after the R point becomes the S point. It becomes a point.

Finally, when Q, R, and S points are found from the ECG signals detected through this process, the pulse rate, RR interval, and QS interval are compared based on this, and the variable values for the regularity of tachycardia, bradycardia, and rhythm are calculated (F15). do. The pulse rate per minute is calculated based on the measured R-R interval of the ECG signal. When the pulse rate per minute is 100 or more times, it is determined as tachycardia and when the pulse rate per minute is less than 50, it is determined as bradycardia. In order to judge the rhythm regularity, the rhythm regularity is calculated by calculating the percentage of deviation of each RR interval and QS interval from these average values based on the average value for the RR interval and the QS interval for the initial period of time. The result is displayed (F16) and a series of processes are terminated (F17).

8 is an example of waveforms output after the ECG signal measured and stored by the ECG measuring apparatus 300 according to the present invention is connected to an external device and transmitted.

In addition to displaying basic information about the user, the waveform of the original measured ECG signal is printed as it is, allowing the clinician to directly check the waveform and make an accurate diagnosis.

The single-channel portable wireless electrocardiogram measuring apparatus and method according to the present invention is always carried in consideration of the use environment under various conditions, and the user directly measures and stores the electrocardiogram on a regular basis in daily life or at the moment before or after exercise occurs. In well-being societies where regularly stored ECG waveforms can be presented to clinical specialists during hospital visits for help in diagnosis and prescription, and in planning health care guidelines based on changes in ECG waveforms throughout the day. Could be extended to essential healthcare devices.

 This includes industrial values that can be applied to various medical environments and home medical device industries, beyond the concept of electrocardiogram, which has a disease such as arrhythmia and it is difficult to detect abnormalities when visiting a hospital.

1 is a view showing an embodiment of the use of a short-channel portable wireless ECG measuring apparatus according to the present invention.

2: Front view, left side view, right side view, and bottom view which show the external appearance of the electrocardiogram measuring apparatus of FIG.

3 is a block diagram of a short channel portable ECG measuring apparatus according to the present invention.

4 is a constant voltage power supply and reference voltage setting circuit including a battery reverse current prevention circuit according to the present invention.

5 is a detailed circuit diagram of an ECG signal detection unit from an ECG sensor according to the present invention.

6 is a detailed circuit diagram illustrating a control unit including an input unit, a status display unit, and a display unit according to the present invention.

7 is a flow chart showing an electrocardiogram measurement and analysis method according to the present invention.

Figure 8 shows an example of the output of the waveform stored after the electrocardiogram measurement according to the present invention.

* Brief description of the main parts of the reference numerals *

101: power button 103: menu selection button

105: Menu navigation button 107: USB terminal

111: display unit 150: interface unit

300: ECG measuring device 305C: chest electrode

305f: finger electrode 350: user

400: ECG signal detection unit 450: control unit

451: A / D converter 453: digital signal processor

455: RAM 457: ROM

459: flash memory 470: external device

Claims (12)

An electrocardiogram measuring and storage device for detecting an electrocardiogram signal by contacting an electrode attached to a portable device with a user's finger and chest, An electrocardiogram sensor unit for detecting an electrocardiogram through two electrodes in contact with a user's finger and one electrode in contact with a chest; An electrocardiogram signal detector configured to analog-process an electrocardiogram signal of a short channel detected by the electrocardiogram sensor; Converting and storing the short channel ECG signal from the ECG signal detector into a digital signal, extracting feature points from the short channel ECG signal by calculation of a stored analysis program, and determining rhythm irregularity from the extracted feature points, A control unit controlling transmission of the stored ECG signal to an external device; And And a display unit 111 for displaying in real time the electrocardiogram waveform under the control of the controller. The method of claim 1, The electrocardiogram sensor unit exposes two finger electrodes 305f to contact two fingers on an outer surface of the electrocardiogram measuring device, and the other electrode for one chest electrode 305c to be exposed, Wherein each finger and chest electrode is a dry electrode that does not need a gel, the short-channel portable wireless ECG measuring apparatus, characterized in that it is configured integrally with the ECG measuring device. The method of claim 1, The analog signal processing of the ECG signal detecting unit detects only signals necessary for power supply noise and ECG signal analysis from each ECG signal measured by the ECG sensor unit, and amplifies the signals so that the signals are not saturated. Measuring device. The method of claim 1, The controller 450 may include an A / D converter converting an analog ECG signal detected by the ECG signal detector into a digital signal; RAM for storing the digital ECG signal of the A / D converter; A digital signal processor for extracting feature points from the ECG signal by calculating a digital ECG signal stored in the RAM by an analysis program stored in a ROM memory, and determining an irregularity of the rhythm from the extracted feature points; A flash memory for storing an analysis result value in the digital signal processor; And And an interface unit (150) for transmitting the ECG signal stored in the RAM memory and the analysis result value stored in the flash memory to an external device. The method of claim 3, wherein And the interface unit transmits the electrocardiogram measurement data and the analysis result values stored in the RAM and the flash memory to a PC or a mobile communication terminal connected to a wired or wireless connection using a USB terminal or a Bluetooth protocol. The method of claim 5, wherein A single channel portable wireless electrocardiogram measuring apparatus for outputting an electrocardiogram waveform signal through a printer connected to the interface unit. The method of claim 1, The EKG waveform measured by the control of the controller is displayed on the display in real time for a set time (range of 20 ~ 300 seconds), the short-channel portable wireless ECG measurement, characterized in that for storing the measured ECG data in the internal memory Device. The method of claim 1, A plurality of menu navigation buttons to add to the control unit and select a user to navigate a menu; And And a menu selection button for selecting a searched menu by the user using a menu navigation button. The method according to any one of claims 1 and 4 to 8, The display unit displays the electrocardiogram waveform calculated by the controller, extracts feature points from the electrocardiogram signal converted into a digital signal, classifies and displays the determination result of the electrocardiogram rhythm irregularity using the same, and selects a user's menu navigation button and menu selection. A short channel portable wireless electrocardiogram measuring device for displaying the operation state of the button, and the data transmission state through the interface unit. In the electrocardiogram measuring method for measuring and analyzing the electrocardiogram signal from the finger and chest of the user through the finger and chest electrodes provided in the short-channel portable wireless ECG device, Starting an ECG signal measurement from a finger and a chest in contact with the finger and chest electrodes provided in the ECG measuring device; Applying the selected values to the external input of the controller as the user manipulates the external input key;  The measured analog electrocardiogram signal is analog signal processed and converted into a digital signal to the controller; Applying a digital lowpass filter to the electrocardiogram signal converted into the digital signal, and processing and displaying the digital signal including trend removal; Performing analysis of the ECG signal when the detection of the ECG signal for the predetermined time is completed; And And displaying the result of the analysis. The method of claim 10, In the analyzing of the ECG signal, the derivative is performed to occupy a part showing a sudden change in the ECG signal. Since the differential signal is weak in magnitude, the portion corresponding to the R point is squared by all data points. Accentuating; Performing a moving average to find a portion of one period of the ECG signal; In order to detect a feature point in the ECG signal, if an appropriate threshold value is found and a peak is found at a portion larger than the threshold value, the point means R point of the ECG signal, and the data in the original ECG signal corresponding to the peak point is confirmed. Thereby finding an R point; After finding the point R, if a certain section is defined before and after the point R and the derivative is detected to detect the portion crossing the zero point, the zero crossing portion before the R point becomes the Q point, and the zero crossing portion after the R point is Determining an S point; When the final Q, R, S point is found from the ECG signal detected through the above step, calculating the variable values for the regularity of tachycardia, bradycardia, and rhythm by comparing pulse rate, RR interval, and QS interval per minute based on this. Single channel portable wireless electrocardiogram measuring method comprising the. The method of claim 11, The pulse rate per minute is calculated based on the measured R-R interval of the ECG signal, the pulse rate per minute is determined as tachycardia when the pulse rate is 100 times or more, and when the pulse rate per minute is less than 50 times, it is determined as bradycardia, The determination of the regularity of the rhythm is to determine the irregularity of the rhythm by calculating the percentage of deviation of each RR interval and QS interval from these average values based on the average value for the RR interval and the QS interval for the initial predetermined time. Single channel portable wireless electrocardiogram measuring method characterized in that.

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