Industry-Academic Cooperation Foundation, Chosun University

Jae Hyo Jung

Youn Tae Kim

Si Ho Shin

Ji Hoon Lee

Min Gu Kang

Da Eun Kim

Dae Gil Choi

Kyeung Ho Kang

Geng Jia Zhang

The present invention relates to a method for estimating blood pressure from photoplethysmography (PPG) signals. The blood pressure estimation method using the CFR model according to an embodiment of the present invention is characterized in that it comprises the steps of extracting a plurality of blood flow characteristics from PPG signals for training, calculating systolic and diastolic blood pressures from ambulatory blood pressures for training, labeling the systolic and diastolic blood pressures with the plurality of blood flow characteristics to train a cascade forest regression model, and inputting the PPG signals of a target user into the trained cascade forest regression model to determine the systolic and diastolic blood pressures of the target user.

Blood pressure estimation method using cascade forest regression model

An apparatus for transmitting power wirelessly using capacitive coupling, provided in a wearable device, includes: a transmission electrode including a plurality of unit electrode pairs, each unit electrode pair being formed by a transmission signal electrode and a transmission ground electrode; and a control module configured to select a unit electrode pair, forming capacitive coupling with the reception electrode, among the plurality of unit electrode pairs provided in the reception electrode, to wirelessly transmit power to a reception electrode included in an implantable device.

Apparatus for transmitting power wirelessly using capacitive coupling

An apparatus for classifying stress includes an electrocardiogram (ECG) measurement module configured to measure an ECG signal in a first state, an idle state, and an ECG signal in a second state in which noise, having various magnitudes, is generated, a feature point extraction module configured to extract a feature point of each of the measured ECG signal in the first state and the measured ECG signal in the second state, and a clustering module configured to perform K-means clustering on the ECG signals in the first and second states based on the extracted feature points to classify stress.

Apparatus and method for classifying stress

A capsule-type endoscope including a battery, a camera configured to capture internal organ images, a light source configured to irradiate light to capture the internal organ images, and a light source driving power line supplying power, stored in the battery, to the light source. The light source driving power line is a loop antenna coil for reception of a control signal from an external coupled loop antenna coil for transmission.

Capsule-type endoscope for receiving control signal using light source driving power line and method of controlling capsule-type endoscope

Provided is an electromyogram (EMG) signal-based user authentication apparatus and method. The apparatus includes an EMG signal receiver configured to receive an EMG signal measured using an EMG sensor, a pre-processor configured to remove a partial signal from the received EMG signal according to a preset frequency band, and a controller configured to authenticate a user by comparing a pre-stored EMG signal with the EMG signal in which the partial signal has been removed.

Electromyogram signal-based user authentication apparatus and method

An apparatus for measurement of an electrocardiogram signal using wireless communications includes a submodule measuring a first signal by a heartbeat signal provided via a first electrode when a flag signal is wirelessly received, and a main module wirelessly transmitting the flag signal according to a predetermined sampling period, and measuring a second signal by a heartbeat signal provided through a second electrode. The main module is configured to synchronize a measurement time of the second signal with a measurement time of the first signal by measuring the second signal in consideration of a wireless transmission time of the flag signal.

Apparatus and method of measuring electrocardiogram signal using wireless communications, and computer-readable recording medium

A Carbon NanoTube (CNT) composite electrode includes a lower electrode having a through-hole formed therein, and configured to be attached to the skin of a subject body to detect a biosignal, an upper electrode provided on one surface of the lower electrode to form an enclosed space between the lower electrode and the upper electrode, and configured to receive the biosignal detected by the lower electrode, and an air discharge portion formed in at least one of the lower electrode and the upper electrode, and discharging air present in the enclosed space and the through-hole externally so as to be configured to allow the upper electrode and the lower electrode to be attached to the skin of the subject body via vacuum suction.

Carbon nanotube composite electrode using vacuum suction

An apparatus for monitoring a biosignal of a cyclist includes an electrocardiogram measuring sensor measuring an electrocardiogram signal of a cyclist, an electromyogram measuring sensor measuring an electromyogram signal of the cyclist, and a determination module determining muscle fatigue of the cyclist, based on at least one of a change in a heart rate of the measured electrocardiogram signal and a change in a frequency component of the measured electromyogram signal.

Apparatus and method of monitoring biosignal of cyclist and computer readable recording medium

A wearable device for measuring an edema index includes: a band, wearable on a wrist; an electrode module including a pair of current electrodes and a pair of voltage electrodes; and a main module applying an alternating current (AC) to the pair of current electrodes, and obtaining an edema index of a human body from an AC voltage measured from the pair of voltage electrodes, wherein each of the pair of current electrodes and the pair of voltage electrodes is attached to one surface of the band in a row in a length direction of the band, and protrudes from the surface of the band to be in direct contact with the skin of the wrist when the band is worn on the wrist.

Wearable device for measuring edema index and method of measuring edema index using same

A sensor for measuring biometric information includes a biometric electrode sensing biometric information in a state in which the biometric electrode is in contact with a surface of the skin; and a signal line transmitting the sensed biometric information, wherein the biometric electrode is printed on an inner surface of an item of clothing that comes into contact with a human body.

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Gwangju, South Korea

Jae Hyo Jung