Impedance measuring device and a health management device using the same
First Claim
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1. A body fat detecting device, comprising:
- a hand held element having first and second handgrips at respective ends of an axis thereof, said first and second handgrips being arrayed substantially parallel to each other in a direction substantially perpendicular to said axis;
a pair of first electrodes for inputting a high-frequency signal to a human body;
a pair of second electrodes for outputting said high frequency signal applied to said human body;
one of each of said first and second electrodes being mounted on said first handgrip and the other of each of said first and second electrodes being mounted on said second handgrip;
a signal generator configured to supply said high-frequency signal to said first electrodes;
measuring means for measuring an impedance of said human body using said output signal from said second electrodes,said determining means comprising condition judgment means for determining whether an abnormal condition exists or does not exist by determining whether said measured impedance is within a prescribed range; and
a calculating device for calculating a fat mass of said human body based on said measured impedance.
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Abstract
A device for providing data as a guide to health management which is capable of highly accurate measurements measures various characteristics of the body of a subject by electrical measurements of the subject while he or she is grasping handgrips with which the device is equipped. Once measurement has begun, the impedance variability measured by the device is calculated at every sampling period, and if the value of this variability is continuously less than a predetermined amount over a number of samplings, it is concluded that the electrodes which apply a fixed current and the electrodes which detect voltage are making good contact with the subject'"'"'s hands.
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Citations
10 Claims
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1. A body fat detecting device, comprising:
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a hand held element having first and second handgrips at respective ends of an axis thereof, said first and second handgrips being arrayed substantially parallel to each other in a direction substantially perpendicular to said axis; a pair of first electrodes for inputting a high-frequency signal to a human body; a pair of second electrodes for outputting said high frequency signal applied to said human body; one of each of said first and second electrodes being mounted on said first handgrip and the other of each of said first and second electrodes being mounted on said second handgrip; a signal generator configured to supply said high-frequency signal to said first electrodes; measuring means for measuring an impedance of said human body using said output signal from said second electrodes, said determining means comprising condition judgment means for determining whether an abnormal condition exists or does not exist by determining whether said measured impedance is within a prescribed range; and a calculating device for calculating a fat mass of said human body based on said measured impedance. - View Dependent Claims (2, 3)
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4. A body fat detecting device, comprising:
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a hand held element having first and second handgrips at respective ends of an axis thereof, said first and second handgrips being arrayed substantially parallel to each other in a direction substantially perpendicular to said axis; a pair of first electrodes for inputting a high-frequency signal to a human body; a pair of second electrodes for outputting said high frequency signal applied to said human body; one of each of said first and second electrodes being mounted on said first handgrip and the other of each of said first and second electrodes being mounted on said second handgrip; a signal generator configured to supply said high-frequency signal to said first electrodes; measuring means for measuring an impedance of said human body using said output signal from said second electrodes, said measuring means comprising condition judgment means for judging whether an abnormal condition exists or does not exist by determining whether said measured impedance is within a prescribed range and optimal impedance determining means for determining an optimal impedance after said condition judgment means judges that an abnormal condition does not exist; and a calculating device for calculating a fat mass of said human body based on said measured impedance. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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Specification