KR20200044323A - Apparatus for measuring bio-signal - Google Patents

Abstract

The present invention relates to a biosignal measurement device for improving user convenience and activity. The biosignal measurement device comprises: an ear mounting part inserted and mounted into the inside of an ear of a subject and having a body temperature detection part, a pulse wave detection part and a first electrocardiogram electrode; and a body mounting part connected to the ear mounting part and having the first electrocardiogram electrode.

Description

Bio-signal measuring device {APPARATUS FOR MEASURING BIO-SIGNAL}

The present invention relates to a bio-signal measurement device, and more particularly, to a wearable type bio-signal measurement device that is inserted into and mounted in a user's ear.

Recently, as interest in health has increased, health care products capable of measuring a biosignal have attracted much attention.

In particular, patients with diseases such as heart disease, hypertension, diabetes, etc., need to continuously observe their physical condition in daily life as well as visit a hospital and receive medical treatment.

In particular, special care patients, such as critically ill patients, patients for surgery, or patients recovering after surgery, need to monitor the patient's condition from time to time by measuring vital signs. However, in order to measure the bio-signals, various types of bio-signals are measured by attaching a sensor which is mainly composed of a patch to a corresponding body part of the patient and connected to a separate monitoring device by wire.

In addition, in order to monitor the state of the biosignal measured in the patient, the medical staff, such as a doctor or a nurse, must visually check the state of the monitoring device while the biosignal is being measured.

Therefore, the efficiency of the task of periodically monitoring the biosignals of the patient decreases and a problem occurs that causes inconvenience to the patient.

Korean Patent Publication No. 10-2009-0008786 (Published on: January 22, 2009, Inventor: Hwang Jinsang et al. 2)

The problem to be solved by the present invention is to improve convenience and activity when using a biosignal measuring device.

The bio-signal measuring apparatus of the present invention for solving the above problems is inserted into and mounted in the wearer's ear, and is connected to the ear mounting unit and the ear mounting unit having a body temperature sensing unit, a pulse wave sensing unit, and a first electrode for electrocardiogram. It includes a body mounting portion having a first electrode for an electrocardiogram.

The bio-signal measuring apparatus according to the feature may further include a control unit located in one of the ear mounting unit and the body mounting unit, and a communication unit located in one of the ear mounting unit and the body mounting unit, and the control unit may include the body temperature sensing unit. The body temperature detection signal output from, the pulse wave detection signal output from the pulse wave detection unit and the ECG signals output from the first and second electrodes for electrocardiogram may be read and transmitted to the monitoring device through the communication unit.

The control unit may read the pulse wave detection signal output from the pulse wave detection unit and the ECG signals output from the first and second electrodes for electrocardiogram at a predetermined time, and transmit them to the monitoring device through the communication unit.

The control unit reads the pulse wave detection signal output from the pulse wave detection unit and the ECG signal output from the first and second electrodes for electrocardiogram each time biometric information request information is received from the monitoring device through the communication unit, It can be transmitted to the monitoring device through the communication unit.

The bio-signal measuring apparatus according to the feature may further include a status notification unit connected to the control unit, and the control unit may include the first electrode by signals input from the first electrode for the electrocardiogram and the second electrode for the electrocardiogram. And determining the wearing state of the second electrode and the corresponding body part of the wearer, and when the electrode having the abnormal mounting state exists, the state notification unit is operated to notify the wearer that the electrode having the abnormal mounting state exists. .

The status notification unit may include at least one of a speaker and a vibration generating unit, and the control unit may notify the wearer that an electrode having an abnormal mounting state exists by operating at least one of the speaker and the vibration generating unit.

The bio-signal measuring apparatus according to the above feature may further include a storage unit connected to the control unit and storing a warning message, wherein the control unit notifies the wearer that an electrode having an abnormal mounting state is present using a speaker. , Among the first electrode for ECG and the second electrode for ECG, an electrode having an abnormal mounting state may be determined, and a corresponding warning message may be read from the storage unit and output to the speaker according to the determined electrode type. .

The control unit determines an electrode having an abnormal mounting state among the first electrode for electrocardiogram and the second electrode for electrocardiogram, and reads a corresponding warning message from the storage unit according to the determined type of electrode and the degree of adhesion to the speaker Can be output as

The bio-signal measuring apparatus according to the feature may further include an emergency switch connected to the control unit, and when the control unit determines that the emergency switch is operated, the monitoring unit through the communication unit that generates an emergency signal. Can be transferred to.

When the emergency switch is determined to be in an activated state, the controller detects a body temperature detection signal output from the body temperature detection unit, a pulse wave detection signal output from the pulse wave detection unit, and an electrocardiogram signal output from the ECG first and second electrodes. It can be read respectively, and transmitted to the monitoring device through the communication unit.

The bio-signal measuring apparatus according to the above feature may further include a microphone connected to the control unit, and when the control unit determines that the emergency switch is operated, operate the microphone to input a voice signal input through the microphone. Is transmitted to the monitoring device through the communication unit, and when a voice signal is transmitted from the monitoring device through the communication unit, the speaker may output a voice corresponding to the transmitted voice signal.

According to this feature, since the number of wires connected to the wearer's body for measuring a biosignal is greatly reduced, the wearer's activity and convenience are improved.

In addition, since the measurement of the bio-signal is performed at a predetermined time interval and transmitted to the monitoring device, the measurement operation of the bio-signal is periodically performed at a predetermined time without accurate time management of the wearer or the manager. Therefore, it is possible to monitor the physical condition of the wearer periodically without the inconvenience of the wearer and the manager, and the work efficiency of the manager is greatly improved.

Moreover, when the wearer's body condition is an emergency, the wearer or guardian notifies the manager of the emergency using an emergency switch, so that rapid emergency measures are taken to prevent the occurrence of a human accident.

1 is a schematic block diagram of a biosignal measurement system according to an embodiment of the present invention.
FIG. 2 is a schematic block diagram of the bio-signal measurement apparatus shown in FIG. 1.
3 is a flowchart illustrating an operation of a bio-signal measuring apparatus according to an embodiment of the present invention.
FIG. 4 is a flowchart illustrating an operation of the biosignal measurement apparatus shown in FIG. 3 for a routine for confirming a mounting state.
5A and 5B are operational flowcharts of the biosignal measurement implementation routine shown in FIG. 3, respectively.
6 is a flowchart illustrating an operation when the emergency switch is operated in the bio-signal measuring apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that adding a detailed description of a technology or configuration already known in the art may obscure the gist of the present invention, some of them will be omitted from the detailed description. In addition, the terms used in the present specification are terms used to properly express the embodiments of the present invention, which may vary according to persons or practices related to the field. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

The terminology used herein is only to refer to a specific embodiment and is not intended to limit the invention. The singular forms used herein include plural forms unless the phrases clearly indicate the opposite. As used herein, the meaning of 'comprising' embodies certain properties, regions, integers, steps, actions, elements and / or components, and other specific properties, regions, integers, steps, actions, elements, components and / or groups. It does not exclude the existence or addition of.

Hereinafter, a biosignal measuring apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

First, a biosignal measurement system including a biosignal measurement apparatus according to an embodiment will be described with reference to FIGS. 1 and 2.

1 and 2, the bio-signal measurement system of this example includes a bio-signal measurement device 100 and a monitoring device 200 in communication with the bio-signal measurement device 100.

 The bio-signal measuring apparatus 100 is mainly inserted into the wearer's ear and is connected to the ear mount 110 for performing bio-signal measurement and the ear mount 110 and has a second electrode 21 for ECG measurement. The body mounting portion 120 is provided.

The ear mount 110 may measure at least one of a wearer's body temperature, heart rate and coral saturation, and a biosignal for an electrocardiogram (ECG).

In addition, the ear mounting unit 110 transmits a bio-signal measured through communication with the monitoring device 200 to the monitoring device 200, and can make contact with a manager such as a doctor or a nurse.

For this operation, the ear mounting unit 110, as shown in Figure 2, emergency switch 111, body temperature detector 112, pulse wave detector 113, the first electrode for electrocardiogram detection (hereinafter, now 1 electrode is connected to the 'electrode first for ECG') 114, emergency switch 111, body temperature detector 112, pulse wave detector 113, and the first electrode 114 for electrocardiogram detection Control unit 12, speaker 131 and microphone 133 connected to control unit 12, vibration generator 132 connected to control unit 12, communication unit 134 connected to control unit 12 , A storage unit 135 connected to the control unit 12 and a power supply unit 14 for supplying power necessary for the operation of the bio-signal measurement device 100.

The emergency switch 111 is turned on by the action of a wearer or a guardian for measuring a biosignal, so that the wearer can contact a manager such as a medical staff as in the case of an emergency.

When it is determined that the emergency switch 111 is operated according to the state of the signal output from the emergency switch 111, the controller 12 sets the state of the microphone 133 to an operation state, and a call operation with the manager is made. You can lose.

The body temperature detector 112 is for measuring the body temperature of the wearer, and may measure body temperature using infrared rays.

The pulse wave (PPG, photo-plethysmography) detection unit 113 emits light of a light emitting unit (eg, a light emitting diode (LED)) that emits light of a predetermined color (eg, green and red), respectively, and a light emitting unit that is reflected by the skin. It has a light-receiving unit (eg, photodiode) that receives light, and outputs signals according to the state of arteries and veins so that heart rate and oxygen saturation can be determined.

The first electrode 114 is for measuring the ECG together with the second electrode 21 provided in the body mounting portion 120. When the ear mounting portion 110 is inserted into the wearer's ear, it is easy to measure the ECG. It is located in contact with the body part.

The control unit 12 is a part that controls the operation of the ear mounting unit 110, and the biological signals measured by the corresponding sensing units 112 and 113 and the electrode 114 are transmitted to the monitoring device 200 through the communication unit 134. Transmission, and controls the operating state of the speaker 131, the vibration generator 132 and the microphone 133.

The control unit 12 may include a timer 121.

The speaker 131 is stored in the voice data transmitted from the monitoring device 200 or the storage unit 135 under the control of the control unit 12 to output the voice data as a corresponding voice, and the biosignal measurement device 10 The desired content is output by voice, such as at least one of the installation state, the biosignal measurement timing, and the administrator's instructions.

The vibration generator 132 operates under the control of the control unit 12 to generate vibration and may include a motor.

The vibration generator 132 may inform the wearer of the mounting state of the biosignal measurement device 10 or the timing of the biosignal measurement.

In this example, the speaker 131 and the vibration generator 132 constitute a status notification unit.

The microphone 133 operates under the control of the control unit 12, and is for voice communication with the manager. The control unit 12 monitors the voice data input through the microphone 133 through the communication unit 134. ).

The microphone 133 of this example is preferably positioned to be exposed outside the ear for efficient voice input.

The communication unit 134 is for wireless communication with the monitoring device 200 as described above, and may include a short-range communication module.

In this case, Bluetooth, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), or ZigBee may be used as the short-range communication technology.

The storage unit 135 is a portion in which data necessary for the operation of the biosignal measurement apparatus 100 or data generated during the operation is stored, and may be formed of a memory or the like.

However, the storage unit 135 may be omitted if necessary.

The power supply unit 14 is for supplying power required for the operation of the bio-signal measuring device 100, the power required for operation by the second electrode 21 provided in the body mounting unit 120 as well as the ear mounting unit 110 Will supply.

The body mounting portion 120 is for measuring ECG as described above, and a second electrode for detecting ECG attached to the wearer's heart (hereinafter, the second electrode is referred to as a 'second electrode for ECG') ( 21).

Therefore, only wiring for connection of the electrode 21 exists between the body mounting portion 120 and the ear mounting portion 110.

In this example, the second electrode 21 is connected to the control unit 12 located in the ear mounting unit 110 through a wire, but is not limited thereto and may be connected to the control unit 12 through wireless.

Therefore, the signal measured by the second electrode 21 is transmitted to the control unit 12 and transmitted to the monitoring device 200 as an ECG-related signal together with the signal measured by the first electrode 114.

In addition, since the sensing units 112, 113, and 114 for measuring a biosignal are located in the ear mounting unit 110 inserted into the ear, the component mounted on the wearer's body for measuring the biosignal is an electrode 21. Only exists.

Accordingly, since the ear mounting unit 110 is simply worn in the wearing ear for measuring a biosignal, it does not interfere with the activity of the wearer, thereby improving the wearer's activity and convenience.

Returning to FIG. 1 again, the monitoring device 200 receives the bio-signals measured through wireless communication with the bio-signal measurement device 100, and uses the transmitted bio-signals to measure the wearer's body temperature, heart rate, and oxygen saturation. Biometric information such as at least one of an electrocardiogram, pulse rate, heart rate variability (HRV) and stress index is measured and notified by a manager.

Accordingly, the monitoring device 200 includes a communication unit for communication with the bio-signal measuring device 100, a control unit for controlling operations, and an information output unit for outputting bio-information determined under the control of the control unit, such as data and commands. And a user input device that performs an input operation.

Next, the operation of the biosignal measurement system of this example having such a structure will be described.

When the operation of the bio-signal measurement system starts, the bio-signal measurement device 100 starts an operation to measure a bio-signal of the wearer and transmits the measured bio-signal to the monitoring device 200.

Therefore, the control unit 12 of the bio-signal measuring apparatus 100, as shown in Figure 3, first, the bio-signal to check whether the bio-signal measuring apparatus 100 is mounted on each of the wearer's ear and body is correctly mounted. The measurement device mounting check operation is performed (S10).

To this end, as shown in FIG. 4, when the operation state of the control unit 12 becomes a confirmation state (S10) in which the bio-signal measurement device is installed, the control unit 12 first, the first and second electrodes 114 and 21 The applied signal is read from each to determine the magnitude of the signal (S11, S12), and the contact resistance of the body part in contact with the first and second electrodes 114, 21 is determined.

Next, the control unit 12 determines whether an electrode having an abnormal mounting state exists using the determined size of the contact resistance (S13).

For example, if the determined size of the contact resistance is greater than or equal to the set value, the controller 12 determines that the corresponding electrodes 114 and 21 are not adhered to the corresponding body part or the adhesion state is not a state for normal signal measurement. do.

Therefore, according to the size of the determined signal, when there is an electrode in which the mounting state with the corresponding body part is in an abnormal state (S13), the controller 12 selects an abnormal mounting state among the first and second electrodes 114, 21. The electrode to be held is judged (S14).

When an electrode having an abnormal mounting state is present, the control unit 12 is in a state to normalize the mounting state of the corresponding electrode 114 (at least one of 21 and 21) that is abnormally attached to the corresponding body part or is located away from the corresponding body part. The wearer is operated to notify the wearer of the abnormal mounting state of the current electrode (S15).

When the speaker 131 is used, the control unit 12 may read the warning message stored in the storage unit 135 according to the type of the electrode maintaining the abnormal mounting state, and output it through the speaker 131.

For example, a warning message such as 'Please check the installation state of the inner electrode and the inner body electrode' may be output. Here, the ear electrode means the first electrode 114 and the body electrode means the second electrode 21.

 At this time, the controller 12 may have a different type of warning message that is output according to the type of the corresponding electrode and the degree of mounting to maintain the abnormal mounting state.

For example, it may be 'the first electrode is away from the body' or 'please attach the second electrode strongly'.

In addition, alternatively, when there is an electrode that maintains an abnormally mounted state, the controller 12 operates the vibration generator 132 at a predetermined time and intensity to notify the wearer that an electrode that maintains an abnormally mounted state exists. You can.

If necessary, the controller 12 may operate both the speaker 131 and the vibration generator 132 in a corresponding state to inform the wearer that an electrode maintaining an abnormal mounting state exists.

For this reason, the bio-signal measuring apparatus 100 for measuring the bio-signal of the wearer is accurately mounted on the corresponding body part to perform a stable bio-signal measuring operation.

Through this operation, when the bio-signal measuring apparatus 100 is stably mounted on a corresponding body part of the wearer, the controller 12 performs a bio-signal measuring operation (S20).

Accordingly, the control unit 12 determines whether the time measured through the operation of the timer 121 has elapsed, as shown in FIG. 5A (S21).

When the determined time passes the set time (S21), the controller 12 operates the body temperature detector 112 and the pulse wave detector 113, and the body temperature detection signal and pulse wave detection output from the body temperature detector 112 The biological signal such as the pulse wave detection signal output from the unit 113 and the ECG signal output from the first and second electrodes 114 and 21 are read to measure the wearer's biosignal (S22).

Then, the control unit 12 transmits the measured bio-signal to the monitoring device 200 through the communication unit 134.

Accordingly, the control unit of the monitoring device 200 receives the bio signal transmitted through the communication unit, determines the body temperature using the body temperature detection signal output from the body temperature detection unit 112, and uses the pulse wave detection signal to detect heart rate and oxygen At least one of the saturation levels is determined, and biometric information such as at least one of an ECG, a pulse rate, a heart rate variability (HRV) and a stress index is measured using an ECG signal.

Then, the control unit of the monitoring device 200 outputs the measured biometric information to at least one of a graph and a number through the information output unit, so that an administrator can check the current physical condition of the wearer.

In the case of FIG. 5A, the bio-signal measuring device 100 measures the body signal of the wearer at a predetermined time interval using the timer 121 and transmits it to the monitoring device 200.

However, as shown in FIG. 5B, in an alternative example, the bio-signal measurement device 100 may perform a bio-signal measurement operation according to a request of the monitoring device 200.

That is, as shown in FIG. 5B, when a bio-information request signal is transmitted from the monitoring device 200 through the communication unit 134 (S25), the control unit 12 of the bio-signal measurement device 100 is a body temperature detector 112 ), And outputs a driving signal to the pulse wave detector 113 and the first and second electrodes 114 and 21 to switch the corresponding devices 112, 112, 141 and 21 to an operable state (S26).

Next, the control unit 12 performs the operation for confirming the installation of the bio-signal measuring device through the same operation as shown in FIG. 4 (S27), so that the bio-signal measuring device 100 can be normally mounted on the corresponding body part of the wearer. To make.

When the bio-signal measuring device 100 is normally mounted on the corresponding body part, the control unit 12 of the bio-signal measuring device 100 reads the signals applied from the corresponding sensing units 112, 113 and the electrodes 114, 21. By measuring the bio-signal (S28), and transmits the bio-signal measured through the communication unit 134 to the monitoring device (200) (S29).

In this case, the monitoring device 200 may generate and transmit a bio-information request signal every predetermined time to the bio-signal measurement device 100 and according to at least one of the administrator's requests.

In this way, the bio-signal measurement device 100 is measured at a time point desired by the administrator, and the measured bio-signals are transmitted to the monitoring device 200. Therefore, since the measurement operation of the bio-signal is performed at a desired time without accurate time management of the wearer or the manager, the physical condition of the wearer is periodically monitored without the inconvenience of the wearer and the manager.

In addition, as shown in FIG. 6, the control unit 12 of the bio-signal measuring apparatus 100 of this example controls the operation of the bio-signal measuring apparatus 100 according to the operation state of the emergency switch 111.

Accordingly, as illustrated in FIG. 6, the control unit 12 reads the signal output from the emergency switch 111 to determine whether the emergency switch 111 has been operated (S31, S32).

When it is determined that the emergency switch 111 is operated by the user according to the state of the signal output from the emergency switch 111 (S32), the controller 12 switches the state to the microphone 133 to the operating state, thereby changing the microphone Operating (133) (S33), and transmits an emergency signal to the monitoring device 20 through the communication unit (134) (S34).

Accordingly, when the emergency signal is transmitted from the bio-signal measuring device 100, the control unit of the monitoring device 200 determines the body state of the wearer as an abnormal state so that the location tracking or necessary emergency measures can be quickly taken.

In addition, when the wearer's voice data is input through the microphone 133, the controller 12 transmits the input voice data to the monitoring device 200, and when the voice data is transmitted from the monitoring device 200, corresponds to the speaker 131. The voice is output so that voice communication between the manager and the wearer can be performed (S35).

In an alternative example, when it is determined that the emergency switch 111 is operated, the control unit 12 of the bio-signal measurement device 100 performs the bio-signal measurement operation as shown in FIG. 3 and then obtains the obtained bio- The signal may be transmitted to the monitoring device 200. In this case, since the manager quickly grasps the physical condition of the wearer in which an emergency occurs by using the transmitted bio-signal, emergency measures suitable for the wearer are made quickly and accurately to prevent the occurrence of a human accident.

In the bio-signal measuring apparatus 100 of the present example, since the control unit 12, the power supply unit 14, the communication unit 134, and the storage unit 135 are located in the ear mounting unit 110 mounted to the ear, these (12, 14) , 134, 135) may be located on the body mounting portion 120.

In this case, the electrical connection between the component located in the ear mounting portion 100 and the component located in the body mounting portion 120 is made of at least one of a wired connection and a wireless connection to the communication unit through wiring.

The embodiments of the biosignal determination device of the present invention have been described above. The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and variations will be possible from the viewpoint of a person having ordinary knowledge in the field to which the present invention pertains. Therefore, the scope of the present invention should be defined not only by the claims of the present specification, but also by the claims and equivalents thereof.

100: bio-signal measuring device 200: monitoring device
10: ear mounting portion 20: body mounting portion
111: emergency switch 112: body temperature detector
113: pulse wave detector 114, 21: electrode
12: control unit 131: speaker
132: vibration generator 133: microphone
134: communication unit

Claims (11)

An ear mounting unit inserted into the wearer's ear and equipped with a body temperature sensing unit, a pulse wave sensing unit, and a first electrode for electrocardiogram; And
A body mounting part connected to the ear mounting part and having the first electrode for electrocardiogram
Bio-signal measuring device comprising a. According to claim 1,
A control unit located in one of the ear mounting unit and the body mounting unit; And
Communication unit located in one of the ear mounting portion and the body mounting portion
Further comprising,
The control unit reads the body temperature detection signal output from the body temperature detection unit, the pulse wave detection signal output from the pulse wave detection unit, and the electrocardiogram signals output from the first and second electrodes for electrocardiogram, and monitors them through the communication unit. Sent to
Bio-signal measuring device. According to claim 2,
The control unit reads the pulse wave detection signal output from the pulse wave detection unit and the ECG signal output from the first and second electrodes for electrocardiogram at a predetermined time, respectively, and transmits the biosignal measurement device to the monitoring device through the communication unit. According to claim 2,
The control unit reads the pulse wave detection signal output from the pulse wave detection unit and the ECG signal output from the first and second electrodes for electrocardiogram each time biometric information request information is received from the monitoring device through the communication unit, A bio-signal measuring device transmitting to the monitoring device through the communication unit. According to claim 2,
Status notification unit connected to the control unit
Further comprising,
The control unit determines an installation state of the first electrode and the second electrode and a corresponding body part of the wearer by a signal input from the first electrode for ECG and the second electrode for ECG, and has an abnormal mounting state. When the electrode is present, a bio-signal measuring device that notifies the wearer that an electrode having an abnormal mounting state is operated by operating the state notification unit. The method of claim 5,
The status notification unit includes at least one of a speaker and a vibration generating unit,
The control unit operates the at least one of the speaker and the vibration generating unit to measure a bio-signal measuring device to notify the wearer that an electrode having an abnormal mounting state exists. The method of claim 6,
A storage unit connected to the control unit and storing a warning message
Further comprising,
When the controller notifies the wearer of the presence of an electrode having an abnormal mounting state using a speaker, the controller determines an electrode having an abnormal mounting state among the first electrode for ECG and the second electrode for ECG, and determines the determined electrode A bio-signal measuring device that reads a corresponding warning message from the storage unit and outputs it to the speaker according to the type. The method of claim 7,
The control unit determines an electrode having an abnormal mounting state among the first electrode for electrocardiogram and the second electrode for electrocardiogram, and reads a corresponding warning message from the storage unit according to the determined type of electrode and the degree of adhesion to the speaker Bio-signal measuring device output to. The method of claim 6,
Emergency switch connected to the controller
Further comprising,
When it is determined that the emergency switch is operated, the control unit transmits it to the monitoring device through the communication unit that generates an emergency signal.
Bio-signal measuring device. The method of claim 9,
When the emergency switch is determined to be in an activated state, the controller detects a body temperature detection signal output from the body temperature detection unit, a pulse wave detection signal output from the pulse wave detection unit, and an electrocardiogram signal output from the ECG first and second electrodes. Reading each, and transmitting to the monitoring device through the communication unit
Bio-signal measuring device. The method of claim 9,
Microphone connected to the control unit
Further comprising,
When it is determined that the emergency switch is operated, the controller operates the microphone to transmit a voice signal input through the microphone to the monitoring device through the communication unit, and a voice signal from the monitoring device through the communication unit. When transmitted, the speaker is a bio-signal measuring device that outputs a voice corresponding to the transmitted voice signal.

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