JPH10272112A - Measuring device for electrical characteristics of human body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and quickly measure various kinds of electrical characteristics of a human body, by providing a mechanism comprising an adaptor for the stabilization of an electrode location in order to keep the contact angle of an electrode with a skin surface constant, a spring in order to keep the contact pressure of the electrode with the skin surface constant, and an electrode location sensor. SOLUTION: The adaptor 2 for the stabilization of an electrode location is provided in order to keep the contact angle of the electrode 1 with a skin surface constant, and thus, the contact area of the electrode 1 with a skin surface is kept constant. By this adaptor 2, the electrode 1 is supported, and the electrode 1 is connected to a device main body wherein a high frequency oscillator, and various kinds of electrical characteristic detectors, etc., are provided. In this case, the electrode 1 is connected to the device main body by a spring 8, and the electrode 1 is pressed to a in surface by the spring 8, and the contact pressure of the electrode 1 to the skin surface is kept uniform. Also, preferably, a standard condenser is connected in parallel with the high frequency oscillator and the electrode 1 in order to calibrate the measured value, and various kinds of electrical characteristics can be accurately measured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring electrical characteristics of a human body.

[0002]

2. Description of the Related Art Various electrical characteristics such as electric capacity, electric conductivity, electric resistance, impedance, reactance, and conductance are measured by contacting an electrode with the skin surface of a human body to cause a weak current to flow for health management. Useful methods have been widely practiced. For example, Taue et al.
A method has been proposed in which skin moisture is estimated by measuring skin impedance using a high frequency of 5 MHz and used as an index of skin lesions (Koshokai, Vol. 4, No. 4).
2, 1980).

In general, such an apparatus for measuring the electrical characteristics of the human body is composed of an apparatus body composed of a high-frequency oscillator, various electrical characteristic detectors, and the like, and electrodes that are brought into contact with the skin surface. .

However, it has been difficult to keep the contact angle, contact pressure, contact area, etc. between the skin surface and the electrode constant with the conventional device, so that the electrical characteristics can be measured accurately and quickly with high reproducibility. Could not.

[0005]

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a human body electrical characteristic measuring apparatus capable of accurately and quickly measuring various electrical characteristics of a human body with high reproducibility. And

[0006]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for measuring various electrical characteristics of a human body by bringing an electrode into contact with a skin surface, wherein the contact angle of the electrode with the skin surface is kept constant. An electrode position stabilizing adapter (1) for keeping the electrode, a mechanism consisting of a spring and an electrode position sensor for keeping the contact pressure of the electrode against the skin surface constant (2), and a standard condenser for calibrating the measured value (3) An electrical characteristic measuring device for a human body, comprising at least one of the following.

The human body electrical characteristic measuring apparatus of the present invention is an apparatus for measuring various electrical characteristics of a human body such as electric capacity, electric conductivity, electric resistance, impedance, reactance, and conductance.

The apparatus for measuring electrical characteristics of a human body according to the present invention has an appropriate configuration according to the electrical characteristics to be measured, but generally includes a high-frequency oscillator, various electrical characteristic detectors and the like. Has the same configuration as a conventionally known resistance / capacitance measurement device or the like comprising a device body to be contacted and electrodes to be brought into contact with the skin surface, and further comprises an electrode position stabilizing adapter (1), a spring and an electrode position sensor It comprises at least one of a mechanism (2) and a standard condenser (3).

By using the apparatus for measuring electrical characteristics of a human body according to the present invention, various electrical characteristics of a human body can be measured accurately and easily. Further, by processing the measured values by various known methods, for example, the skin moisture content, the body fat percentage, and the like can be easily calculated, thereby exhibiting excellent convenience in daily health management.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an apparatus for measuring electrical characteristics of a human body according to an embodiment of the present invention.

FIG. 1 is a schematic view of an electrode portion of an embodiment of the apparatus for measuring electrical characteristics of a human body according to the present invention provided with an adapter for stabilizing an electrode position. The electrode position stabilizing adapter 2
This is for keeping the contact angle of the electrode 1 with the skin surface constant. The shape of the electrode position stabilizing adapter 2 is not particularly limited as long as it can maintain a constant contact angle of the electrode 1 with the skin surface. Also, by providing the electrode position stabilizing adapter 2,
The contact area of the electrode 1 on the skin surface can also be kept constant.

The electrode 1 is connected to a device body (not shown). A high-frequency oscillator, various electrical characteristic detectors, and the like are provided in the apparatus main body. The electrode 1 may be integrally formed with the apparatus main body, or may be connected to the apparatus main body via a lead wire.

In the present embodiment, the electrode 1 is flat, but may be another shape such as a bar. Also, electrode 1
The material is not particularly limited. For example, copper, nickel, austinite stainless steel according to JIS G 4304, SUS304 (Cr: 19%, Ni: 8
%, Fe: 73%).

At the time of measurement, various electrical characteristics can be measured by passing a weak alternating current of, for example, 800 μA and 50 kHz while the electrode 1 is in contact with the skin surface.

Next, FIG. 2 shows a schematic view of an embodiment of the apparatus for measuring electrical characteristics of a human body of the present invention provided with a mechanism comprising a spring and an electrode position sensor. In the present embodiment,
The electrode 1 and an apparatus main body 3 provided with a start button 4, a display unit 5, a sensor position display lamp 6, a power switch 7, and the like are integrally formed.

As shown in FIG. 3, the electrode 1 is connected to the apparatus main body 3 via a spring 8. Further, a metal plate 9 is provided on each of the electrode 1 and the device main body 3. In the present embodiment, this metal plate 9 constitutes an electrode position sensor.

At the time of measurement, when the electrode 1 is pressed against the skin surface, the spring 8 contracts, and the electrode 1 and the metal plate 9 provided on the apparatus main body 2 come into contact with each other, and the sensor position indicating lamp 6 is turned on. That is, by checking the lighting of the sensor position display lamp 6, the contact pressure of the electrode 1 on the skin surface can be always kept constant.

As shown in the circuit diagram of FIG. 4, the apparatus for measuring electrical characteristics of a human body according to the present invention preferably includes a standard capacitor 11 in parallel with the high-frequency oscillator 10 and the electrode 1. The standard condenser 11 is for calibrating the measured value. The provision of the standard capacitor 11 makes it possible to accurately measure various electrical characteristics with higher reproducibility.

[0019]

The apparatus for measuring electrical characteristics of a human body according to the present invention comprises:
With the above-described configuration, various electric characteristics such as electric capacity, electric conductivity, electric resistance, impedance, reactance, and conductance can be accurately and quickly measured with high reproducibility.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an electrode portion of an embodiment of a human body electrical characteristic measuring apparatus according to the present invention.

FIG. 2 is a schematic view showing an embodiment of the human body electrical characteristic measuring device of the present invention.

FIG. 3 is a schematic view showing a mechanism including a spring and an electrode position sensor of the electrical characteristic measuring apparatus for human body of the present invention.

FIG. 4 is a circuit diagram of an embodiment of a human body electrical characteristic measuring apparatus according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 electrode 2 electrode position stabilizing adapter 3 device body 4 start button 5 display unit 6 sensor position display lamp 7 power switch 8 spring 9 metal plate 10 high frequency oscillator 11 standard capacitor

Claims (1)

[Claims] 1. An apparatus for measuring various electrical characteristics of a human body by bringing an electrode into contact with a skin surface,
An electrode position stabilizing adapter (1) for maintaining a constant contact angle of the electrode with the skin surface, a mechanism (2) including a spring and an electrode position sensor for maintaining a constant contact pressure of the electrode with the skin surface. And at least one of a standard capacitor (3) for calibrating a measured value.