CAPACITIVE SENSOR DEVICE AND INSTALLATIONS COMPRISING A SENSOR DEVICE THIS TYPE
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United States of America Patent
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Mar 21, 2006
Grant Date -
Apr 6, 2006
app pub date -
Jul 21, 2003
filing date -
Aug 2, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A water supply for sanitary devices has a sensor, is activatable without contact, has a first capacitor with first and second conductive layers and a dielectric layer positioned there-between. A second capacitor having a first and second electrically conductive layers and a dielectric layer there-between. An AC voltage generator is electrically connected to the second layer of the first capacitor for coupling an AC voltage. The supply has a sensor amplifier for amplifying an output signal and the first layer is shared by the capacitors and has a shared absorption area. Upon approach or contact of an object or a liquid, an additional capacitor is formed whose effective capacitance experiences a detectable change that is tapped at the second layer.
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