Touch sensor, sanitary fitting with touch sensor and method for detecting the touching of an electrically conducting surface

The contact sensor has an insulated conductive sensor surface connected to an a.c. voltage generator via a measurement resistance. The voltage difference across the resistance is used as the measurement signal. A first AND circuit input is connected via a NOT circuit to the measurement resistance, a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	RUDRICH, HANS-PETER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS BASIC ELECTRONIC CIRCUITRY BLASTING COCKS DEVICES FOR VENTING OR AERATING DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER ELECTRICITY ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PULSE TECHNIQUE SEWERAGE SINKS TAPS THERMAL INSULATION IN GENERAL VALVES WATER SUPPLY WEAPONS
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Beschreibung
Zusammenfassung:	The contact sensor has an insulated conductive sensor surface connected to an a.c. voltage generator via a measurement resistance. The voltage difference across the resistance is used as the measurement signal. A first AND circuit input is connected via a NOT circuit to the measurement resistance, a second to the measurement resistance on the sensor surface side. The AND output feeds an integrator followed by a comparator and/or microcontroller. The contact sensor has a conductive sensor surface insulated with respect to earth potential and connected to an alternating voltage generator via a measurement resistance, whereby the voltage difference across the measurement resistance is used as the measurement signal. A first input of an AND circuit is connected via a NOT circuit to the measurement resistance, a second to the measurement resistance on the sensor surface side. The AND output feeds an integrator followed by a comparator and/or microcontroller. Independent claims are also included for the following: a sanitary fitting and a method of detecting contact with an electrically conducting surface.