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1. WO2011132129 - SKIN CONTACT DETECTOR

Publication Number WO/2011/132129
Publication Date 27.10.2011
International Application No. PCT/IB2011/051663
International Filing Date 18.04.2011
IPC
H03K 17/96 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and -breaking
94characterised by the way in which the control signals are generated
96Touch switches
CPC
A61B 5/0531
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
053Measuring electrical impedance or conductance of a portion of the body
0531Measuring skin impedance
A61B 5/6843
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
6801specially adapted to be attached to or worn on the body surface
6843Monitoring or controlling sensor contact pressure
H03K 17/962
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
17Electronic switching or gating, i.e. not by contact-making and –breaking
94characterised by the way in which the control signals are generated
96Touch switches
962Capacitive touch switches
H03K 2217/96073
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
KPULSE TECHNIQUE
2217Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
94characterised by the way in which the control signal is generated
96Touch switches
9607Capacitive touch switches
96071characterised by the detection principle
96073Amplitude comparison
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AllExceptUS)
  • MAIER, Dieter, Johann [AT]/[AT] (UsOnly)
Inventors
  • MAIER, Dieter, Johann
Agents
  • COOPS, Peter
Priority Data
10160655.622.04.2010EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SKIN CONTACT DETECTOR
(FR) DÉTECTEUR DE CONTACT AVEC LA PEAU
Abstract
(EN) A system for detecting skin contact comprises a signal generator (9) for generating an electric trigger signal; a reference circuit (10) comprising a capacitance (CREF) and a resistance (RPREF) for generating a reference signal in dependence on the trigger signal; a probe (11) touchable by a skin for measuring a skin response signal in dependence on the trigger signal; and a comparator (4) for comparing the skin response signal with the reference signal. The capacitance (CREF) of the reference circuit (10) represents a lower bound of skin capacitance, and the resistance (RPREF) of the reference circuit represents an upper bound of skin resistance.
(FR) L'invention concerne un système de détection du contact avec la peau, qui comprend un générateur de signal (9) destiné à produire un signal électrique de déclenchement; un circuit de référence (10) comprenant une capacité (CREF) et une résistance (RPREF) et destiné à produire un signal de référence en fonction du signal de déclenchement; une sonde (11) qui peut entrer en contact avec la peau pour mesurer un signal de réponse de la peau en fonction du signal de déclenchement; et un comparateur (4) destiné à comparer le signal de réponse de la peau avec le signal de référence. La capacité (CREF) du circuit de référence (10) représente une borne inférieure de la capacité de la peau et la résistance (RPREF) du circuit de référence représente une borne supérieure de la résistance de la peau.
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