TW202145960A - Method for improving effective measurement of ecg and device thereof - Google Patents

Abstract

A method for improving effective measurement of electrocardiogram (ECG) includes the following steps. An ECG measurement process is initiated to detect a user's ECG physiological parameters by pressing a plurality of electrode pads. A capacitance sensing signal is detected to identify stability of the user's finger. When the capacitance sensing signal is greater than a capacitance threshold, a prompt signal is generated to notify the user to pay attention to the stability of his finger.

Description

Method and device for improving effective measurement of electrocardiogram

The present invention relates to a measurement method, and more particularly, to a method and apparatus for improving the effective measurement of electrocardiogram (ECG).

In the process of ECG measurement, the incorrect posture of the user will affect the measurement result of the ECG, so that the ECG machine cannot provide symptom analysis. When the user does not know the reason for the failure, the user cannot adjust to the correct measurement posture, so that the ECG measurement needs to be repeated many times, causing the user to be troubled.

The invention relates to a method for improving the effective measurement of electrocardiogram and an electrocardiogram measuring device, which can reduce the number of repeated electrocardiogram measurements and improve the accuracy.

According to an aspect of the present invention, a method for improving the effective measurement of an electrocardiogram is provided, which includes the following steps. The user presses a plurality of electrode pads of an electrocardiograph to start an electrocardiogram measurement program to detect an electrophysiological parameter of the user's heart. A capacitive sensing signal for identifying the stability of the user's finger is detected. When the capacitance sensing signal is greater than a capacitance threshold, a prompt signal is generated to notify the user to pay attention to the finger stability.

According to an aspect of the present invention, an electrocardiogram measuring device is provided, which includes a plurality of electrode pads and a capacitance sensing unit. The electrode sheet is used to detect a cardiac electrophysiological parameter of the user. The capacitive sensing unit is used to identify the stability of the user's finger. When the user's finger presses the electrode pads, the capacitive sensing unit detects a capacitive sensing signal. When the capacitive sensing signal is greater than a capacitance threshold, the capacitive sensing unit detects a capacitive sensing signal. The user is reminded to pay attention to finger stability.

In order to have a better understanding of the above-mentioned and other aspects of the present invention, the following specific examples are given and described in detail in conjunction with the accompanying drawings as follows:

The following examples are provided for detailed description, and the examples are only used as examples to illustrate, and are not intended to limit the scope of protection of the present invention. In the following, the same/similar symbols are used to represent the same/similar elements for description. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., only refer to the directions of the accompanying drawings. Accordingly, the directional terms used are illustrative and not limiting of the present invention.

Please refer to FIGS. 1 and 2 , which are schematic diagrams of an electrocardiogram measuring apparatus 100 according to an embodiment of the present invention and a method for improving effective electrocardiogram measurement using the electrocardiogram measuring apparatus 100 .

In FIG. 1, the electrocardiogram measuring device 100 is used to detect the electrophysiological signal of the user's electrocardiogram, such as the waveform, amplitude, frequency, etc. of the heartbeat. In order to obtain a correct electrocardiogram, the electrocardiogram physiological signal collected by the electrocardiogram measuring device 100 needs to be processed by waveform filtering, so that the correct electrocardiogram can be used for symptom analysis after the noise generated by shaking is separated. If the user's hand posture changes or the body posture changes, it will be impossible to obtain a correct ECG and perform symptom analysis. Accordingly, a method for improving the effective measurement of an electrocardiogram and an electrocardiogram measuring device are proposed in this embodiment.

In one embodiment, the electrocardiogram measuring device 100 includes two or more electrode pads 112, an electrocardiograph 110, a capacitance sensing unit 120, a pressure sensing unit 122, a gyroscope sensing unit 124, a The computing module 130 and a transmission module 140 . The electrode sheet 112 is used to detect an electrophysiological parameter of the user's heart. For example, the user presses the two electrode pads 112 with the thumb of the left hand and the right hand at the same time, and during the ECG measurement process, in order to avoid measurement errors caused by finger shaking or body movement, the capacitive sensing unit 122 or the pressure sensing unit 122 is used to detect A capacitive sensing signal or a pressure sensing signal for identifying the stability of the user's finger is measured, and the gyro sensing unit 124 detects a gyro sensing signal for identifying the stability of the user's body. In addition, during the ECG measurement, the pressure sensing unit 122 can also instantly detect whether the pressing position or force is appropriate, and if the pressing position or force is not appropriate, notify the user to adjust to the appropriate pressing position or force.

During the ECG measurement, the user should maintain a fixed posture, such as a fixed sitting or lying posture, and try to relax the muscles, adjust the breathing smoothly, and avoid excessive pressing, finger sliding and body shaking, so as to improve the effectiveness of the measurement . If the electrocardiogram measuring device 100 detects a finger sliding, it can send a finger sliding notification. If the electrocardiogram measuring apparatus 100 detects body shaking and causes the electrocardiographic measuring apparatus 100 to move, a body shaking notification can be sent. If the electrocardiogram measuring device 100 detects finger sliding and body shaking, a notification of finger movement and body shaking can be sent. In addition, if the electrocardiogram measuring device 100 detects an abnormal pressing force, for example, the pressing force is too large or too light, a notification of abnormal pressing can be sent.

In FIG. 1, the operation module 130 is used to calculate the number of movements of the fingers and/or the body and the measured values, so as to identify the stability of the user's finger and/or the body. For example, the computing module 130 detects whether the movement of the user's finger is greater than a threshold value according to the capacitance sensing unit 120 to determine the stability of the user's finger, or the computing module 130 detects the user's finger according to the pressure sensing unit 122 Whether the pressing force is greater than a threshold value is used to determine the stability of the user's finger, or the computing module 130 detects whether the variation of any one of the three axes is greater than a threshold value according to the gyroscope sensing unit 124 to determine the stability of the user's body Spend.

In FIG. 1, the transmission module 140 is used for transmitting the measurement result of the electrocardiogram to an external storage device or a display device, such as a mobile phone, a computer or a remote device. Through a mobile phone, computer or remote device, the measurement results of the ECG can be recorded and displayed.

Referring to FIG. 2, in one embodiment, the measurement method includes the following steps. In step S100, an electrocardiogram measurement procedure is started to detect an electrophysiological parameter of the user's heart. In step S102, a capacitive sensing signal or a pressure sensing signal for identifying the stability of the user's finger is detected. In step S104, a gyroscope sensing signal for identifying the stability of the user's body is detected. In step S106, the electrophysiological parameters of the heart are analyzed, and it is determined whether the measurement results of the electrophysiological parameters of the heart are affected by the incorrect posture of the user. For example, it is determined whether the measured value is greater than a threshold value. If the measured value is greater than a threshold value, go to step S108 , prompt the user to pay attention to the finger stability or body stability, and notify the user to re-measure in step S110 (return to step S100 ). If the measured value is not greater than the critical value, step S112 is performed to analyze the measurement result of the electrocardiogram, and the measurement result can be displayed on the indication unit (eg, display).

FIG. 3 is a schematic structural diagram of the handheld electrocardiogram measuring device 101 according to an embodiment of the present invention, and FIG. 4 is a structural schematic diagram of the hand-held electrocardiographic measuring apparatus 101 according to another embodiment of the present invention.

Please refer to FIG. 3 , the hand-held electrocardiogram measuring device 101 includes two or more electrode pads 112 , and the user's left hand and right thumb press one electrode pad 112 respectively to perform electrocardiogram measurement. In addition, the capacitance sensing unit 120 may include two metal sheets 121 and two resistors R1, R2, the two metal sheets 121 are disposed on the electrode sheet 112, and the two metal sheets 121 and the electrode sheet 112 are separated by, for example, an insulating layer 118, In order to avoid short circuit due to contact between the two metal sheets 121 and the electrode sheet 112 . When the user presses the electrode piece 112 and contacts the two metal pieces 121 at the same time, the capacitance sensing unit 120 compares the capacitance difference ratio on the two metal pieces 121 to obtain a capacitance sensing signal. When the capacitance difference ratio between the two metal sheets 121 is greater than a capacitance threshold (for example, the ratio of the sensing value of point A to the sensing value of point B is greater than 0.5), it means that the capacitive sensing unit 120 detects that the user's finger is relatively The amount of movement of the two metal sheets 121 will affect the measurement results of electrophysiological parameters of the heart. Conversely, when the capacitance difference ratio between the two metal sheets 121 is smaller than a capacitance threshold, it is determined that the measurement result of the electrophysiological parameter of the heart is not affected by the movement of the user's finger. The above capacitance difference ratio is the change in the amplitude of the peak-to-valley detected at point A and point B when the finger slides on the two metal sheets 121 . If the finger does not slide, the change in amplitude is relatively small, so it can be used in In subsequent analysis of the ECG, it was ignored or processed with noise filtering.

In addition, the gyroscope sensing unit 124 is a gyroscope 125 , such as a three-axis gyroscope, which is installed in the handheld electrocardiogram measuring device 101 . When the user's finger presses the electrode sheet 112, if the finger does not move, but the body shakes, the gyroscope sensing unit 124 detects the three-axis variation when the gyroscope 125 moves, so as to obtain a gyroscope sensing signal, And according to whether the variation of any one of the three-axis variation is greater than a critical value, the stability of the user's body is judged. When the variation of any axis is greater than the critical value, it means that the movement of the user's body will affect the measurement result of the electrophysiological parameters of the heart. On the contrary, when the variation of any axis is smaller than the critical value, it is judged that the measurement result of the electrophysiological parameter of the heart is not affected by the user's body movement. If the detected variation of any axis is too small, it can be ignored or processed by noise filtering in subsequent ECG analysis.

Referring to FIG. 4 , in another embodiment, the handheld electrocardiogram measuring device 101 includes two electrode pads 112 , and the user's left hand and right thumb press one electrode pad 112 respectively to perform electrocardiogram measurement. In addition, the pressure sensing unit 122 includes a pressure gauge 123 disposed on the electrode sheet 112 . When the user presses the electrode sheet 112, the pressure gauge 123 is simultaneously pressed to generate a pressure sensing signal. The pressure sensing unit 122 detects whether the pressing force of the user's finger relative to the pressure gauge 123 is greater than a pressure threshold, and determines the stability of the user's finger. When the pressing force is greater than a pressure threshold, it means that the pressure sensing unit 122 detects that the pressing force of the user's finger will affect the measurement result of the electrophysiological parameters of the heart. On the contrary, when the pressing force is less than a pressure threshold, it is determined that the measurement result of the electrophysiological parameter of the heart is not affected by the pressing force of the user's finger. The above-mentioned pressing force is the detected change in the amplitude from the peak to the trough when the finger is pressed on the electrode sheet 112 and then released. It is ignored or processed with noise filtering in the ECG.

Please refer to FIG. 5 , which is a schematic diagram of a wearable electrocardiogram measuring device 102 according to an embodiment of the present invention. The wearable electrocardiogram measuring device 102 includes an indication unit 103 and two electrode sheets 112 , wherein one electrode sheet 112 is located on the watch band, and the other electrode sheet 112 (not shown) is located on the back of the indication unit 103 . As shown in FIG. 5 , two metal sheets 121 are disposed on the electrode sheet 112 , and the two metal sheets 121 and the electrode sheet 112 are separated by, for example, an insulating layer (not shown). In addition, the pressure gauge 123 is disposed on the electrode sheet 112 , and the pressure gauge 123 is located between the two metal sheets 121 . When the user presses the electrode sheet 112, the two metal sheets 121 and the pressure gauge 123 are simultaneously pressed to generate a capacitive sensing signal and a pressure sensing signal to judge the stability of the user's finger. In addition, the gyroscope 125 is disposed in the wearable electrocardiogram measuring device 102 for judging the stability of the user's body. The indicating unit 103 is, for example, a display or a sound/light-emitting device. The display is used to display the electrocardiogram 104 and the number of heartbeats in real time. Due to the influence of posture (such as finger sliding or body movement), the display can display a message of abnormal measurement of the ECG 104 or a text message to notify the user to re-measure, or send out a sound and light message of abnormal measurement through the sound/light-emitting device to The user is prompted to pay attention to finger stability or body stability.

Please refer to FIG. 6 , which is a schematic diagram of a method for improving effective measurement of an electrocardiogram according to an embodiment of the present invention. In one embodiment, step S200 includes the following steps: detecting a cardiac electrophysiological parameter of the user (such as the above-mentioned step S100 ), detecting a capacitive sensing signal or a pressure sensing signal for identifying the stability of the user's finger signal (as in the above-mentioned step S102 ), detect a gyroscope sensing signal for identifying the stability of the user's body (as in the above-mentioned step S104 ), and perform a numerical operation to determine whether the measured value is greater than the threshold value (as in the above-mentioned step S104 ) Step S106), perform a three-axis variation calculation to determine whether the variation of any axis is greater than a critical value (as in the above-mentioned step S106), if the measured value is greater than the threshold, instruct the user to adjust the measurement attitude (as in the above-mentioned step S106) Step S108 ), and if the measured value is less than the critical value, continue to perform numerical operations for analyzing the measurement result (as in the above-mentioned step S112 ).

According to the method for improving the effective measurement of electrocardiogram and the electrocardiogram measuring device thereof according to the above-mentioned embodiments of the present invention, it is possible to determine whether the measurement result of the electrophysiological parameters of the electrocardiogram is affected by the incorrect posture of the user, thereby instructing the user to adjust the measuring posture , to get the correct ECG. In this way, the probability (validity) of a successful ECG measurement is increased, and the number of repeated ECG measurements can be reduced. At the same time, the electrophysiological parameters collected by the electrocardiogram measurement device are processed by noise filtering, so as to separate the noise caused by hand sliding or body shaking, and then use the electrocardiogram to analyze the symptoms, which can improve the measurement accuracy.

To sum up, although the present invention has been disclosed by the above embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

100: ECG measuring device 101: Handheld ECG measuring device 102: Wearable ECG Measurement Device 103: Indication unit 104: EKG 110: EKG machine 112: Electrode 118: Insulation layer 120: Capacitive sensing unit 121: sheet metal 122: Pressure Sensing Unit 123: Manometer 124: Gyroscope Sensing Unit 125: Gyroscope 130: Operation Module 140: Transmission module R1, R2: Resistors A, B: point

FIG. 1 is a schematic diagram of an electrocardiogram measuring device according to an embodiment of the present invention; and FIG. 2 is a schematic diagram illustrating a method for improving the effective measurement of an electrocardiogram according to an embodiment of the present invention. FIG. 3 is a schematic structural diagram of a handheld electrocardiogram measuring device according to an embodiment of the present invention. FIG. 4 is a schematic structural diagram of a handheld electrocardiogram measuring device according to another embodiment of the present invention. FIG. 5 is a schematic diagram of a wearable electrocardiogram measuring device according to an embodiment of the present invention. FIG. 6 is a schematic diagram illustrating a method for improving the effective measurement of an electrocardiogram according to an embodiment of the present invention.

100: ECG measuring device

110: EKG machine

112: Electrode

120: Capacitive sensing unit

122: Pressure Sensing Unit

124: Gyroscope Sensing Unit

130: Operation Module

140: Transmission module

Claims (10)

A method of improving the effective measurement of electrocardiograms, comprising: The user presses a plurality of electrode pads to start an electrocardiogram measurement program to detect an electrophysiological parameter of the user's heart; detecting a capacitive sensing signal for identifying the stability of the user's finger; and When the capacitance sensing signal is greater than a capacitance threshold, a prompt signal is generated to notify the user to pay attention to the finger stability. The method of claim 1, wherein the capacitive sensing signal is detected by a capacitive sensing unit on the electrode sheets. The method of claim 1, wherein the step of determining the stability of the user's finger further comprises detecting whether a pressure sensing signal is greater than a pressure threshold. The method of claim 1, further comprising detecting a gyroscope sensing signal for identifying the stability of the user's body. The method of claim 4, wherein detecting the gyroscope sensing signal is to detect a three-axis variation when a gyroscope moves, and when the gyroscope sensing signal of any axis in the three-axis variation is greater than When a threshold value is reached, the prompt signal is generated to notify the user to pay attention to the body stability. An electrocardiogram measuring device, comprising: a plurality of electrode pads for detecting a cardiac electrophysiological parameter of a user; and a capacitive sensing unit for identifying the stability of the user's finger, wherein when the user's finger presses the electrode pads, the capacitive sensing unit detects a capacitive sensing signal, when the capacitive sensing signal is greater than a When the capacitance threshold is reached, the user is prompted to pay attention to the stability of the finger. The electrocardiogram measuring device according to claim 6, wherein the capacitance sensing unit is disposed on the electrode sheets. The electrocardiogram measuring device according to claim 6, further comprising a pressure sensing unit for detecting a pressure sensing signal for identifying the stability of the user's finger, when the pressure sensing signal is detected to be greater than a pressure When the critical value is reached, the user is prompted to pay attention to the finger stability. The electrocardiogram measuring device according to claim 6, further comprising a gyroscope sensing unit for detecting a gyroscope sensing signal for identifying the stability of the user's body. The electrocardiogram measuring device according to claim 9, wherein detecting the gyroscope sensing signal comprises detecting a three-axis variation when a gyroscope moves, and when the gyroscope is in any one of the three-axis variation When the sensing signal is greater than a threshold value, the user is prompted to pay attention to the stability of the body.

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