TWI733509B - 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 device for improving the effective measurement of electrocardiogram (ECG).

During the electrocardiogram measurement process, the incorrect posture of the user will affect the measurement result of the electrocardiogram, so that the electrocardiograph cannot provide symptom analysis. The user is unable to adjust to the correct measurement posture without knowing the reason for the failure, so that the electrocardiogram measurement needs to be repeated many times, which causes confusion for the user.

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

According to one 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. Detect a capacitive sensing signal used to identify the 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 the finger.

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

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

The following examples are provided for detailed description. The examples are only used as examples for description, and are not intended to limit the scope of the present invention to be protected. In the following description, the same/similar symbols represent the same/similar elements. The directional terms mentioned in the following embodiments, for example: up, down, left, right, front or back, etc., are only the directions with reference to the accompanying drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

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

In Figure 1, the electrocardiogram device 100 is used to detect the user's electrophysiological signals during the electrocardiogram measurement process, such as the waveform, amplitude, and frequency of the heartbeat. In order to obtain a correct electrocardiogram, the electrophysiological signals collected by the electrocardiogram device 100 need to be processed by waveform filtering, so as to separate the noise generated by shaking, and then the correct electrocardiogram can be used for symptom analysis. If the user's hand posture or body posture changes, the correct electrocardiogram and symptom analysis will not be obtained. Accordingly, in this embodiment, a method for improving the effective measurement of an electrocardiogram and an electrocardiogram measuring device are proposed.

In one embodiment, the ECG 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, and a Operation module 130 and a transmission module 140. The electrode sheet 112 is used to detect an electrophysiological parameter of the user. For example, the user presses the two electrode pads 112 with the left and right thumbs at the same time, and during the ECG measurement process, in order to avoid measurement errors caused by finger shaking or body movement, the capacitance sensing unit 122 or the pressure sensing unit 122 is used to detect A capacitance sensing signal or a pressure sensing signal for identifying the stability of the user's finger is detected, and a gyroscope sensing signal for identifying the stability of the user's body is detected by the gyroscope sensing unit 124. In addition, during the electrocardiogram measurement process, the pressure sensing unit 122 can also detect whether the pressing position or force is appropriate in real time, 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 process, the user should maintain a fixed posture, such as a fixed sitting or lying posture, and try to relax muscles, adjust breathing smoothly, avoid excessive pressing, finger sliding and body shaking to improve the effectiveness of the measurement . If the electrocardiogram device 100 detects the sliding of the finger, it can send out a notification of the sliding of the finger. If the electrocardiogram device 100 detects body shaking and causes the electrocardiogram device 100 to move, it may issue a body shaking notification. If the electrocardiogram device 100 detects finger sliding and body shaking, it can issue a notification of finger movement and body shaking. In addition, if the electrocardiogram device 100 detects an abnormal pressing force, for example, the pressing force is too large or too light, a notification of abnormal pressing may be issued.

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

In Figure 1, the transmission module 140 is used to transmit 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 the mobile phone, computer or remote device, the measurement result of the electrocardiogram can be recorded, and the measurement result of the electrocardiogram can be displayed.

Please refer to Figure 2. In one embodiment, the measurement method includes the following steps. In step S100, an ECG measurement program is started to detect an ECG physiological parameter of the user. In step S102, a capacitance 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 used to identify the stability of the user's body is detected. In step S106, the electrocardiographic physiological parameters are analyzed, and it is determined whether the measurement result of the electrocardiographic physiological parameters is affected by the incorrect posture of the user. For example, it is judged whether the measured value is greater than a critical value. If the measured value is greater than a critical value, step S108 is performed to prompt the user to pay attention to the stability of the fingers or the body, 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 presented on the indicating unit (for example, a display).

FIG. 3 is a schematic diagram of the structure of the handheld ECG device 101 according to an embodiment of the present invention, and FIG. 4 is a schematic diagram of the structure of the handheld ECG device 101 according to another embodiment of the present invention.

Please refer to FIG. 3, the handheld ECG measuring device 101 includes two or more electrode pads 112, and the user's left hand and right thumb respectively press one electrode pad 112 to perform the ECG measurement. In addition, the capacitance sensing unit 120 may include two metal sheets 121 and two resistors R1 and 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 prevent the two metal sheets 121 from contacting with the electrode sheet 112 to be short-circuited. When the user presses the electrode sheet 112 and simultaneously touches the two metal sheets 121, the capacitance sensing unit 120 compares the capacitance difference ratio on the two metal sheets 121 to obtain a capacitance sensing signal. When the capacitance difference ratio on the two metal sheets 121 is greater than a capacitance threshold (for example, the ratio of the sensing value at point A to the sensing value at point B is greater than 0.5), it means that the capacitance sensing unit 120 detects that the user's finger is relative to The amount of movement of the two metal sheets 121 will affect the measurement results of the electrophysiological parameters. Conversely, when the capacitance difference ratio between the two metal sheets 121 is less than a capacitance threshold, it is determined that the measurement result of the electrocardiographic physiological parameter is not affected by the movement of the user's finger. The aforementioned capacitance difference ratio is the amount of change in the amplitude of the peak to trough detected by point A and B when the finger slides on the two metal sheets 121. If the finger does not slide, the amount of change in amplitude is relatively small. In the subsequent analysis of the electrocardiogram, it is ignored or processed by noise filtering.

In addition, the gyroscope sensing unit 124 is a gyroscope 125, for example, a three-axis gyroscope, which is provided 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 change of the gyroscope 125 when it moves to obtain a gyroscope sensing signal. And according to whether the change of any axis of the three-axis change is greater than a critical value, the user's body stability is judged. When the amount of change of any axis is greater than the critical value, it means that the amount of movement of the user's body will affect the measurement result of the electrophysiological parameters. Conversely, when the amount of change of any axis is less than the critical value, it is determined that the measurement result of the electrocardiographic physiological parameter is not affected by the user's body movement. If the change of any axis is detected to be too small, it can be ignored or processed by noise filtering in the subsequent analysis of the electrocardiogram.

Referring to FIG. 4, in another embodiment, the handheld ECG measuring device 101 includes two electrode pads 112, and the user's left hand and right thumb respectively press one electrode pad 112 to perform ECG 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. Conversely, when the pressing force is less than a pressure threshold, it is determined that the measurement result of the electrophysiological parameters is not affected by the pressing force of the user's fingers. The above-mentioned pressing force is the change in amplitude from peak to trough detected when the finger is pressed on the electrode 112 and then released. If the finger is not pressed, the change in amplitude is relatively small, so it can be analyzed later. Ignore the ECG or use noise filtering.

Please refer to FIG. 5, which illustrates a schematic diagram of a wearable electrocardiogram measurement device 102 according to an embodiment of the present invention. The wearable electrocardiogram measuring device 102 includes an indicator unit 103 and two electrode pads 112. One electrode pad 112 is located on the strap, and the other electrode pad 112 (not shown) is located on the back of the indicator 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 capacitance sensing signal and a pressure sensing signal to determine the stability of the user's finger. In addition, the gyroscope 125 is installed in the wearable electrocardiogram measurement device 102 to determine 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 ECG 104 and the number of heartbeats in real time. When the calculation module 130 (see Figure 1) determines that the measurement result of the ECG physiological parameter is incorrect by the user Affected by posture (such as finger sliding or body movement), the display can display a message of abnormal ECG 104 measurement or a text message to notify the user to re-measure, or a sound/light emitting device can send out a sound and light message of abnormal measurement. The user is prompted to pay attention to the stability of the fingers or the stability of the body.

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

According to the method for improving the effective measurement of electrocardiogram and the electrocardiogram measuring device according to the above embodiment of the present invention, it can be determined whether the measurement result of the electrocardiographic physiological parameter is affected by the incorrect posture of the user, thereby instructing the user to adjust the measurement posture , In order to get the correct electrocardiogram. In this way, the probability (effectiveness) of successful ECG measurement increases, and the number of repeated ECG measurements can be reduced. At the same time, the electrocardiographic physiological parameters collected by the electrocardiogram device are processed by noise filtering to separate the noise caused by hand sliding or body shaking, and then use the electrocardiogram for symptom analysis, which can improve the measurement accuracy.

In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs 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 subject to those defined by the attached patent application scope.

100: ECG measuring device 101: Handheld ECG measuring device 102: Wearable ECG measuring device 103: indicator unit 104: ECG 110: ECG machine 112: Electrode sheet 118: Insulation layer 120: Capacitance sensing unit 121: metal sheet 122: Pressure sensing unit 123: Pressure gauge 124: Gyro sensor unit 125: Gyroscope 130: Computing Module 140: Transmission module R1, R2: resistance A, B: point

Figure 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 of a method for improving the effective measurement of an electrocardiogram according to an embodiment of the present invention. FIG. 3 is a schematic diagram of the structure of a handheld electrocardiogram measuring device according to an embodiment of the present invention. FIG. 4 is a schematic diagram showing the structure of a handheld electrocardiogram measuring device according to another embodiment of the present invention. FIG. 5 is a schematic diagram of a wearable electrocardiogram measurement device according to an embodiment of the present invention. FIG. 6 is a schematic diagram of a method for improving the effective measurement of an electrocardiogram according to an embodiment of the present invention.

100: ECG measuring device

110: ECG machine

112: Electrode sheet

120: Capacitance sensing unit

122: Pressure sensing unit

124: Gyro sensor unit

130: Computing Module

140: Transmission module

Claims (10)

A method to improve the effective measurement of electrocardiogram, including: The user presses a plurality of electrode pads to start an electrocardiogram measurement program to detect an electrophysiological parameter of the user; Detecting a capacitive sensing signal used to identify 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 stability of the finger. The method according to claim 1, wherein the capacitance sensing signal is detected by a capacitance sensing unit on the electrode plates. The method according to claim 1, wherein the step of determining the stability of the user's finger further includes detecting whether a pressure sensing signal is greater than a pressure threshold. The method according to claim 1, further comprising detecting a gyroscope sensing signal for identifying the stability of the user's body. The method according to claim 4, wherein detecting the gyroscope sensing signal is detecting a three-axis change amount when a gyroscope moves, and when the gyroscope sensing signal of any axis of the three-axis change amount is greater than When a critical value is reached, the prompt signal is generated to notify the user to pay attention to the stability of the body. An electrocardiogram measuring device, including: A plurality of electrode pads for detecting an electrophysiological parameter of a user; and A capacitance sensing unit for identifying the stability of the user's fingers, wherein when the user's fingers press the electrodes, the capacitance sensing unit detects a capacitance sensing signal, and when the capacitance sensing signal is greater than one When the capacitance is critical, 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 arranged on the electrode plates. 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, and detecting that the pressure sensing signal is greater than a pressure At the critical value, the user is prompted to pay attention to the stability of the finger. 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 measurement device according to claim 9, wherein detecting the gyroscope sensing signal includes detecting a three-axis change amount when a gyroscope moves, and when the gyroscope is on any axis of the three-axis change amount When the sensing signal is greater than a critical value, the user is prompted to pay attention to the stability of the body.

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