Apparatus for measuring skin moisture content and it's operation method
First Claim
1. An apparatus of measuring skin moisture content, the apparatus comprising:
- an electrode unit comprising a reference (R) electrode, a current (C) electrode, and a measuring (M) electrode;
an operational amplifier comprising an inverting input terminal that is supplied with a first voltage and connects with the R electrode, and an output terminal that connects with the C electrode;
a switch to control a connection between the output terminal and the C electrode; and
a comparison control unit to compare the first voltage and a voltage at the output terminal, and controlling the switch to connect the output terminal and the C electrode when the voltage at the output terminal is less than or equal to a value that is acquired by multiplying the first voltage and a predetermined constant,wherein the comparison control unit controls the switch to release the connection between the output terminal and the C electrode when the voltage at the output terminal is greater than the value that is acquired by multiplying the first voltage and the predetermined constant.
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Accused Products
Abstract
An apparatus for measuring skin moisture content, the apparatus including: an electrode unit comprising a reference (R) electrode, a current (C) electrode, and a measuring (M) electrode; an operational amplifier including an inverting input terminal that is supplied to a first voltage and connects with the R electrode, and an output terminal that connects with the C electrode; a switch controlling a connection between the output terminal and the C electrode; and a comparison control unit comparing the first voltage with a voltage at the output terminal, and controlling the switch to connect the output terminal and the C electrode when the voltage at the output terminal is less than or equal to a value that is acquired by multiplying the first voltage and a predetermined constant.
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Citations
13 Claims
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1. An apparatus of measuring skin moisture content, the apparatus comprising:
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an electrode unit comprising a reference (R) electrode, a current (C) electrode, and a measuring (M) electrode; an operational amplifier comprising an inverting input terminal that is supplied with a first voltage and connects with the R electrode, and an output terminal that connects with the C electrode; a switch to control a connection between the output terminal and the C electrode; and a comparison control unit to compare the first voltage and a voltage at the output terminal, and controlling the switch to connect the output terminal and the C electrode when the voltage at the output terminal is less than or equal to a value that is acquired by multiplying the first voltage and a predetermined constant, wherein the comparison control unit controls the switch to release the connection between the output terminal and the C electrode when the voltage at the output terminal is greater than the value that is acquired by multiplying the first voltage and the predetermined constant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of measuring skin moisture content using a skin moisture content measurement apparatus comprising an R electrode, a C electrode, an M electrode, an operational amplifier, and a control unit, the method comprising:
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controlling, by the skin moisture content measurement apparatus, a switch to release a connection between an output terminal of the operational amplifier and the C electrode; supplying, by the skin moisture content measurement apparatus, a first voltage to an inverting input terminal of the operational amplifier; comparing, by the skin moisture content measurement apparatus, a value, acquired by multiplying the first voltage and a predetermined constant, with a voltage at the output terminal of the operational amplifier; and controlling, by the skin moisture content measurement apparatus, the switch to connect the output terminal and the C electrode when the voltage at the output terminal is less than or equal to the value that is acquired by multiplying the first voltage and the predetermined constant, controlling, by the skin moisture content measurement apparatus, the switch to release the connection between the output terminal and the C electrode when the voltage at the output terminal is greater than the value that is acquired by multiplying the first voltage and the predetermined constant. - View Dependent Claims (11)
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12. A computer-readable executable program product tangibly embodied on a computer readable recording medium having a computer-executable program, the computer-executable program executes the following:
measuring skin moisture content using a skin moisture content measurement apparatus comprising an R electrode, a C electrode, an M electrode, an operational amplifier, and a control unit, wherein the measuring skin moisture content comprising; controlling, by the skin moisture content measurement apparatus, a switch to release a connection between an output terminal of the operational amplifier and the C electrode; supplying, by the skin moisture content measurement apparatus, a first voltage to an inverting input terminal of the operational amplifier; comparing, by the skin moisture content measurement apparatus, a value, acquired by multiplying the first voltage and a predetermined constant, with a voltage at the output terminal of the operational amplifier; controlling, by the skin moisture content measurement apparatus, the switch to connect the output terminal and the C electrode when the voltage at the output terminal is less than or equal to the value that is acquired by multiplying the first voltage and the predetermined constant; and controlling, by the skin moisture content measurement apparatus, the switch to release the connection between the output terminal and the C electrode when the voltage at the output terminal is greater than the value that is acquired by multiplying the first voltage and the predetermined constant. - View Dependent Claims (13)
Specification