Abstract:
A body impedance measuring apparatus includes: a first module including a first input electrode and a first output electrode which are configured to contact a subject; a second module including a second input electrode and a second output electrode which are configured to contact the subject; a connection member configured to connect the first module to the second module and adjust a distance between the first module and the second module; and a measuring unit configured to apply a current to the first and second input electrodes, detect a voltage between the first and second output electrodes, and determine a body impedance of a subject based on the detected voltage. At least a component of the measuring unit is disposed in the first module and is electrically connected to the second module through the connection member.
Abstract:
A computer-implemented method includes: receiving, from a sensor of an electronic device, a photoplethysmography (PPG) signal about a user; dividing the received PPG signal into a first set of waveforms; checking qualities of the first set of waveforms and generating a second set of waveforms based on the checked qualities of the first set of waveforms; extracting a plurality of morphological features of each waveform of the second set of waveforms and calculating a plurality of time/amplitude factors based on the extracted plurality of morphological features; estimating, using an artificial intelligence model, a stress level of the user, based on the calculated plurality of time/amplitude factors; and providing the estimated stress level to the user.
Abstract:
A method of measuring a bio signal using a bio signal measuring apparatus includes: positioning electrodes included as part of the bio signal measuring apparatus to contact a surface of an examinee; switching an impedance measurer included as part of the bio signal measuring apparatus and including a voltmeter and a current source; measuring a first impedance value of the examinee while operating the impedance measurer according to a first mode; switching the impedance measurer to a second mode; measuring a second impedance value of the examinee while operating the impedance measurer according to a second mode; and obtaining bio impedance of the examinee based on the first and second impedance values and an internal impedance of the current source.
Abstract:
A method of measuring a bio signal using a bio signal measuring apparatus includes: positioning electrodes included as part of the bio signal measuring apparatus to contact a surface of an examinee; switching an impedance measurer included as part of the bio signal measuring apparatus and including a voltmeter and a current source; measuring a first impedance value of the examinee while operating the impedance measurer according to a first mode; switching the impedance measurer to a second mode; measuring a second impedance value of the examinee while operating the impedance measurer according to a second mode; and obtaining bio impedance of the examinee based on the first and second impedance values and an internal impedance of the current source.
Abstract:
A method and device for measuring a biological variable are provided. The method of measuring the biological variable may include detecting an infrared signal which is irradiated toward a body part and is reflected therefrom, extracting spectrum data from the detected infrared signal, obtaining intensity data corresponding to a preset frequency from the extracted spectrum data, obtaining a biological information-measuring model by performing multiple linear regression (MLR) on the obtained data, and measuring a biological signal of the body part by using the obtained biological information-measuring model.
Abstract:
A method of measuring a bio signal using a bio signal measuring apparatus includes: positioning electrodes included as part of the bio signal measuring apparatus to contact a surface of an examinee; switching an impedance measurer included as part of the bio signal measuring apparatus and including a voltmeter and a current source; measuring a first impedance value of the examinee while operating the impedance measurer according to a first mode; switching the impedance measurer to a second mode; measuring a second impedance value of the examinee while operating the impedance measurer according to a second mode; and obtaining bio impedance of the examinee based on the first and second impedance values and an internal impedance of the current source.
Abstract:
An apparatus for and method of detecting biological information. The apparatus for detecting biological information includes a supporting member that is attached to an object, a biosignal sensor that is configured to detect biological information of the object and mounted in the supporting member; and a plurality of position sensors configured to detect a position of the apparatus with respect to the object. The position sensors may detect position information of an area of the object where the apparatus is attached. Position data detected by the position sensors may be compared with reference position data.
Abstract:
An electrowetting device which includes a polarizable liquid; and a nonpolar solution separated from the polarizable liquid by an interface. The polarizable liquid may include a polar solvent, an organic acid, and ammonium hydroxide having at least one alkyl group.