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US 10,420,483 B2Granted
Apparatus and method for measuring bioelectric impedance using three-electrode sensor
AssigneeSamsung Electronics Co., Ltd.
InventorsYeol Ho Lee, Kak Namkoong, Myoung Hoon Jung, Young Jun Koh
Life of this patent
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Abstract
An apparatus and method for measuring a bioelectric impedance is provided. The apparatus may measure the bioelectric impedance using three electrodes. The apparatus may measure the bioelectric impedance by compensating for a change of a contact impedance.
Claims14
A bioelectric impedance measurement apparatus comprising:
- a first electrode;
- a second electrode;
- a third electrode;
- a power supply connected between the first electrode and the third electrode during a first measurement and a second measurement;
- a short-circuit unit configured to leave the first electrode separated from the second electrode during the first measurement, and short-circuit the first electrode to the second electrode during the second measurement;
- a voltmeter connected between the second electrode and the third electrode during the first measurement and the second measurement, and configured to measure a first voltage between the second electrode and the third electrode while the power supply applies a current to an object through the first electrode and the third electrode, during the first measurement, and measure a second voltage between the short-circuited first electrode and the third electrode while the power supply applies a current to the object through the short-circuited first electrode and the third electrode, during the second measurement;
- and
- a processor configured to calculate a resulting impedance value of the object based on the first voltage and the second voltage.
5 more elements
A bioelectric impedance measurement method, comprising:
- applying a current to an object through a first electrode and a third electrode during a first measurement, by using a power supply connected between the first electrode and the third electrode;
- measuring a first voltage between a second electrode and the third electrode during the first measurement, by using a voltmeter connected to the second electrode and the third electrode;
- short-circuiting the first electrode to the second electrode during a second measurement;
- applying a current to the object through the short-circuit first electrode and the third electrode during the second measurement, by using the power supply connected between the first electrode and the third electrode;
- measuring a second voltage between the short-circuited first electrode and the third electrode during the second measurement, by using the voltmeter connected to the second electrode and the third electrode;
- and
- calculating a resulting impedance value of the object based on the first voltage and the second voltage.
4 more elements
Dependencies are inferred from the claim text.