SPECIAL ELECTRODE TO COMPENSATE ERROR CAUSED BY THICKNESS FLUCTUATIONS AT SKIN IMPEADENCE MEASUREMENT

A special electrode is provided to detect the pattern variation of a voltage drop on a skin by arranging a plurality of voltage measuring electrodes to a current direction. An MCU(Microcontroller Unit)(210) produces a DDS control signal. A DDS(Direct Digital Synthesizer)(230) generates a sinusoidal...

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Bibliographische Detailangaben
Hauptverfasser: SIM, MYEONG HEON, KIM, KI WON, YOON, HYUNG RO, JEONG, IN CHEOL, CHOI, HAN YOON
Format: Patent
Sprache:eng
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Zusammenfassung:A special electrode is provided to detect the pattern variation of a voltage drop on a skin by arranging a plurality of voltage measuring electrodes to a current direction. An MCU(Microcontroller Unit)(210) produces a DDS control signal. A DDS(Direct Digital Synthesizer)(230) generates a sinusoidal wave according to the DDS control signal. A voltage-current converter(250) converts the voltage signal received from the DDS into a current signal. An array electrode(300) is comprised of the electrodes of a plurality of columns and rows. At least one row electrode among the array electrodes is a current electrode. An RMS-DC converter(270) changes the RMS(Root Mean Square) of the signal detected by the array electrode to DC. A data collecting board(400) receives the DC from the RMS-DC converter. A computer(450) stores the data collected from the data collecting board.