摘要:
A body fat measuring device comprises electrodes brought into contact with the waist portion of a subject, an optical sensor composed of a light applying section and a light receiving section, an impedance computing section for computing the impedance between the electrodes, a subcutaneous fat thickness computing section for computing the thickness of the subcutaneous fat of the subject from the value detected by the optical sensor, and a body fat computing section which subtracts the amount of subcutaneous fat determined using the thickness of the subcutaneous fat computed by the subcutaneous thickness computing section from the total fat amount of the subject determined using the impedance computed by the impedance computing section so as to determine the visceral fat amount of the subject. With this, not only the accuracy of measurement of the visceral fat amount is improved but also the visceral fat amount of the subject can be easily computed even without a database.
摘要:
A charge control circuit for a battery charger has a sensor circuit for sensing the temperature of a battery being charged and providing an output indicative thereof. A differentiator circuit converts the output of the sensor circuit into an instantaneous time derivative of thereof which is indicative of a corresponding temperature gradient of the battery. When the time derivative is determined by a judging circuit to be below a predetermined threshold indicative of the battery reaching its full charge state, the judging circuit responds to provide a first control signal, causing the battery charger to charge the battery at a high rate. Once the time derivative exceeds the threshold, the judging circuit provides a second control signal, causing the charger to terminate the high rate charge and change to a trickle charge or zero rate charge.
摘要:
According to a first aspect, a secondary side of contactless power transmission apparatus includes: a holding member which is physically separated from a primary side; a magnetic layer; a shield layer for shielding electromagnetic noise; and a heat insulation layer. The secondary coil is a planar coil and supported by the holding member, and at least the magnetic layer is laminated on one side of the planar coil and unified with the planar coil. According to a second aspect, the secondary side of the apparatus includes a plurality of magnetic layers. Each permeability of the magnetic layers is different from each other, and each of the magnetic layers forms a magnetic path with the primary side.
摘要:
The perimeter comprises a display device 1, infrared light-emitting diodes 2, a CCD camera 3, a half mirror 4, an image processing device 5, a computer 6, and an operating switch 7. The computer 6 shows a fixed eye-target for fixing a line of sight of a subject and a light stimulus eye-target for giving a light stimulus to a pupil of the subject at a plurality of predetermined positions on the display device 1. The infrared light-emitting diodes 2 irradiate infrared light to an eye of the subject. The CCD camera 3 takes an image of the eye of the subject using the infrared light irradiated from the infrared light-emitting diodes 2. The image processing device 5 detects a pupil diameter of the subject based on the image taken by the CCD camera 3. The computer 6 measures a visual field of the subject based on the change of the pupil diameter of the subject detected by the image processing device 5. The feature of the present invention resides in that the display device 1 comprises a display device capable of adjusting background luminance of a screen and brightness of the light stimulus eye-target separately.
摘要:
The perimeter comprises a display device 1, infrared light-emitting diodes 2, a CCD camera 3, a half mirror 4, an image processing device 5, a computer 6, and an operating switch 7. The computer 6 shows a fixed eye-target for fixing a line of sight of a subject and a light stimulus eye-target for giving a light stimulus to a pupil of the subject at a plurality of predetermined positions on the display device 1. The infrared light-emitting diodes 2 irradiate infrared light to an eye of the subject. The CCD camera 3 takes an image of the eye of the subject using the infrared light irradiated from the infrared light-emitting diodes 2. The image processing device 5 detects a pupil diameter of the subject based on the image taken by the CCD camera 3. The computer 6 measures a visual field of the subject based on the change of the pupil diameter of the subject detected by the image processing device 5. The feature of the present invention resides in that the display device 1 comprises a display device capable of adjusting background luminance of a screen and brightness of the light stimulus eye-target separately.
摘要:
An electric toothbrush with a control circuit capable of stopping the brushing operation when the brush is pressed against an user's teeth with an excessive force. The electric toothbrush comprises a housing which carries a shaft mounting a brush. The housing incorporates a rotary electric motor and a motion conversion mechanism which converts a rotational movement of the motor to a reciprocatory movement of the shaft for reciprocating said brush. A pressure sensor is provided to sense a brush pressure being applied back to the brush as a counter-action when pressing the brush against the user's teeth and to produce a stop signal when the sensed brush pressure exceeds a predetermined limit level.
摘要:
A quick charging apparatus capable of performing, in addition to normal charging operation for a secondary battery, a quick charging in the battery only a relatively small amount of energy required for performing desired N operations of an electric appliance to which the apparatus is applied, in a very short time. The apparatus comprises means for feeding a first average charging current of a relatively high level in a relatively short time, and means for feeding a second average charging current of a relatively low level in a relatively long time, said relatively small amount of energy being quickly charged with said first high average charging current.