Brose Fahrzeugteile Gmbh&co. Kommanditgesellschaft

Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt

Wolf-Christian Mueller

Holger Wuerstlein

Thomas Weingaertner

Wolfgang Uebel

Carsten Abert

The invention specifies an anti-trapping device, comprising a motor for driving a pivotable actuating element of a motor vehicle, a sensor for contactlessly identifying an obstacle in the way of the actuating element with an electrode, which has a plurality of segments for producing an external electrical field with respect to a mating electrode and a control unit. The electrode extends in a radial direction with respect to the pivotable actuating element and is split in the radial direction into the plurality of segments, which can each be evaluated separately for the purpose of generating an interference signal. The control unit is designed to drive the motor as a function of an interference signal from one of the segments. Such an anti-trapping device has particularly high flexibility when driving the pivotable actuating element if an obstacle in the way of the pivotable actuating element has been detected.

Anti-trapping device for a motor vehicle

An anti-pinching device () for a pivotable actuating element () of a motor vehicle () is specified. Said device comprises a capacitive sensor () which is intended to contactlessly detect an obstacle in the path of the actuating element () and has an electrode () for generating an external electric field opposite a counterelectrode (), wherein the electrode () extends in a radial direction (R) of the pivoting movement of the actuating element (), and a control unit () which is set up to interpret a change in a measurement capacitance (CM), which is formed between the electrode () and the counterelectrode (), as pinching when the changed measurement capacitance (CM) exceeds a triggering threshold (A) which is predefined on the basis of an opening angle (&#x3c6;) of the pivotable actuating element () and to track the triggering threshold (A). In order to achieve greater detection reliability of the anti-pinching device (), the electrode () is subdivided into a plurality of segments () along the radial direction (R), wherein the control unit () is set up to track the triggering threshold (A) in a manner assigned to segments.

Anti-pinching device

a method and a device for detecting the rotation of a brush-operated d.c. motor comprising a number of winding branches which are electrically connected between brushes, during the operation of the motor, by means of plates, according to the rotational angle. According to the invention, an alternating voltage signal is modulated on the basis of a supply direct voltage for the brushes, by which means the course of the complex resistance of the direct current motor is determined and used for the detection of rotation. In this way, the invention enables a cost-effective rotation detection that can be used in motor vehicle technology without requiring additional mechanical components.

Method and device for detecting the rotation of a brush-operated d.c. motor

An anti-pinch sensor () with an associated evaluation circuit () is disclosed, which is suitable in particular for recognizing an obstacle in the way of an actuating element (e.g.,) of a motor vehicle (). The anti-pinch sensor () comprises a sensor body, which contains a sensing electrode (), for generating an external electric field with respect to a counter-electrode (), and a pressure sensor (') decoupled from the sensing electrode (), for detecting a mechanical pressure.

Anti-pinch sensor

An anti-pinch sensor, particularly for detecting an obstacle in the path of an actuating element of a motor vehicle is provided, having a sensor body, a measuring electrode, which is disposed in the sensor body and to which a measuring potential can be applied, a calibrating electrode, which is electrically disconnected and disposed in the sensor body adjacent to the measuring electrode, and a control unit. The control unit controls the measuring electrode and the calibrating electrode such that the measuring potential and the calibrating potential are equal in a measuring phase, and differ from each other in a calibrating phase.

Growing community of inventors

Coburg, Germany

Wolf-Christian Mueller