Sensor measuring by capacitance and detection device with capacitive sensors for the detection of a trapping situation
AssigneeWilhelm Karmann GmbH
InventorPeter Gutendorf
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Abstract
A sensor measuring by capacitance, in particular for the detection of an obstruction of objects or body parts by motor driven devices, comprising an arrangement of a multitude of electrodes on a support and means to measure a capacitance or a capacitance change, is disclosed. The sensor is of a flat and film-like embodiment with a support made out of a film material for the arrangement of the electrodes. Furthermore, a capacitive sensor system, for detection of an obstruction situation of objects or body parts with motor driven devices using several sensors of the above design, is disclosed, whereby an obstruction situation is detected, if a selection of several sensors is responding.
Claims12
(canceled)
A sensor according to claim 11, further comprising an automatically readjusting threshold switch.
(canceled)
A detection device according to claim 12, wherein an obstruction situation is detected when a selection of several sensors are responding.
A detection device according to claim 12, wherein the motor driven device, for which an obstruction of objects or body parts is detected, is a convertible top of a convertible vehicle.
A capacitance sensor for detection of an obstuction of a motor driven device by an object or a body part, comprising:
- a generally flat and film-like support;
- a mulititude of electrodes arranged on one side of the support;
- and
- a means to measure a capacitance or a capacitance change;
- wherein ambient air represents the dialectric.
A detection device, comprising:
- a capacitive sensor system for detecting whether objects or body parts are obstructing a motor driven device, the system including a plurality of sensors, each sensor including;
- a generally flat and film-like support;
- a mulititude of electrodes arranged on one side of the support;
- and
- a means to measure a capacitance or a capacitance change;
- wherein ambient air represents the dialectric.
Dependencies are inferred from the claim text.