APPARATUS AND METHOD FOR SAFETY POWER CONTROL
First Claim
1. An apparatus for safety power control comprising:
- first and second electrodes oppositely spaced a predetermined distance to each other;
a first voltage generator applying first voltage between the first and second electrodes;
a second voltage generator applying, between the first and second electrodes, second voltage for detecting an object put between the first and second electrodes;
a voltage meter measuring voltage between the first and second electrodes; and
a controller detecting the variance in voltage measured by the voltage meter, and if the measured variance is no less than a predetermined threshold value, cutting off the first voltage.
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Accused Products
Abstract
An apparatus for safety power control is provided. The apparatus comprises first and second electrodes oppositely spaced a predetermined distance to each other; a first voltage generator applying first voltage between the first and second electrodes, a second voltage generator applying, between the first and second electrodes, second voltage for detecting an object put between the first and second electrodes, a voltage meter measuring voltage between the first and second electrodes, and a controller detecting the variance in voltage measured by the voltage meter, and if the measured variance is no less than a predetermined threshold value, cutting off the first voltage, whereby detecting voltage having frequency different from high voltage is applied between electrodes to which the high voltage is applied, the variance in detecting voltage between the electrodes according to ingress of a human body or an object is measured, and if voltage variance above a predetermined value is measured, the high voltage is cut off, so that it is prevented for the human body from being damaged by the high voltage in the apparatus, and that the electrodes for applying high voltage is used as it is, thereby controlling power without installing an additional sensor.
8 Citations
12 Claims
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1. An apparatus for safety power control comprising:
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first and second electrodes oppositely spaced a predetermined distance to each other; a first voltage generator applying first voltage between the first and second electrodes; a second voltage generator applying, between the first and second electrodes, second voltage for detecting an object put between the first and second electrodes; a voltage meter measuring voltage between the first and second electrodes; and a controller detecting the variance in voltage measured by the voltage meter, and if the measured variance is no less than a predetermined threshold value, cutting off the first voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for safety power control comprising the steps of:
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applying first voltage between a first electrode and a second electrode; applying, between the first and second electrodes, second voltage for detecting an object put between the first and second electrodes; measuring voltage between the first and second electrodes; and detecting the variance in voltage measured, and if the measured variance is no less than a predetermined threshold value, cutting off the first voltage. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification