Robert Boschgmbh

Psa Automobiles Sa

Peter Braun

Norbert Wegner

Michael May

Harald Retsch

Marcellus Weber

Henry Blitzke

Robert Kern

Hans Meier

Juergen Rapp

Gebhard Michenfelder

Markus Becker

Christof Bernauer

Klaus Eckert

Florian Tisch

Stephan Pauli

Michael Forscht

Rolf Baumann

Christian Schneider

Jean Marc Dhainaut

Alexander Kuderer

Raphael Robert

Described is a wiper system for motor vehicle windows, more particularly motor vehicle windscreens, comprising at least one wiper (), at least one motor () that drives the at least one wiper (), and a switching device () for directly controlling the motor (), wherein the switching device () has one or two switching elements () by means of which at least four switching states can be selected, and wherein selecting one of the switching states causes an operating mode of the at least one wiper () to change.

Wiper system for motor vehicle windows, more particularly motor vehicle windscreens

The invention relates to a control device () for a drive unit () of a vehicle windshield wiper system () comprising at least one wiper arm (). The control device () is designed to determine a load quantity (L) of the drive unit () and to set the wiping frequency (WH) of the wiper arm () on the basis of the ratio of the load quantity (L) to at least one load threshold value (LS). Furthermore, the control device () is designed to set the wiping frequency (WH) depending on the current speed (v) of the vehicle.

Control device and control method for the drive unit of a windshield wiper system

The invention relates to a device and a method for actuating a wiper system. The device comprises a drive unit () for driving at least one wiper arm (), and a control unit (), wherein the control unit () is designed to set a wiping frequency of the wiper arm () as a function of a load variable which is dependent on the torque which is to be applied by the drive unit () during a wiping operation.

Device and method for actuating a drive unit of a wiper system

A system for determining if a tire of a vehicle is improperly inflated. The system includes a radar, a wheel speed sensor, and a controller. The radar is configured to emit a signal to detect a reflection of the signal off of an object positioned perpendicular to the vehicle, and to output an indication of a speed of the vehicle. The wheel speed sensor is configured to sense a speed of a wheel of the vehicle. The controller is configured to receive the indication of the speed of the vehicle from the radar, to calculate a speed of the vehicle based on the sensed speed of the wheel, and to determine a tire of the wheel is improperly inflated when the speed of the vehicle calculated using the wheel speed sensor varies by more than a predetermined amount from the speed of the vehicle determined using the radar signal.

Method for performing closed-loop and/or open-loop control of a windshield wiper device, computer program product, control device and windshield wiper device

The invention relates to a windshield wiper drive unit having a drive motor ( ) and a gear ( ) for transmitting a rotary motion of the motor ( ) to the shaft of a windshield wiper, having at least one sensor ( ) for detecting a position of the shaft, and having a control circuit ( ), which receives a detection signal of the sensor ( ) and has one or more inputs ( ) for receiving operating signals that define a desired operating state of the windshield wiper and is arranged to control a sequence of motions of the shaft as a function of the operating signal received, in which the control circuit ( ) is combined with the drive motor ( ) and the at least one sensor to make an integral component unit.

Windscreen wiper drive aggregate and a vehicle which is equipped with the same

A polarity reversal protective circuit for an electronic power output stage that can be driven via a drive circuit is described. In the case of an incorrect polarization of a supply voltage, power FETs are used in at least one supply terminal to interrupt a connection of the wrongly applied supply voltage to the drive circuit and the power output stage. A definite polarity reversal protection is obtained using a circuit that is improved with respect to cost and space requirement. A single N-channel power FET is looped, with its source-drain path, into the positive supply terminal of the supply voltage. The source terminal of the N-channel power FET is connected with the positive supply terminal. The gate terminal of the N-channel power FET is connected to a collector of a PNP transistor, which is additionally connected to an output of the drive circuit via a current-limiting resistor. An emitter of the PNP transistor is connected&mdash;via a diode that is conductive when the supply voltage is wrongly applied&mdash;to the positive supply terminal. The base of the PNP transistor is connected&mdash;via a base resistor&mdash;to a negative (ground) supply terminal of the supply voltage.

Polarity reversal protection circuit for a final electronic power stage

A windshield wiper drive device for driving a windshield wiper ( ) in an alternating motion in a range of motion ( ) between two turning point positions (A, C) includes a motor ( ) for moving the windshield wiper ( ), a detector ( ) for detecting a time at which the windshield wiper ( ) moves past a given position (A, C) in the range of motion ( ), a control circuit ( ) for reversing the direction of motion of the motor ( ) at each turning point position (B, D), and an incremental transducer for detecting the distance traveled by the windshield wiper ( ) from the given position (A, C). The control circuit ( ) reverses the direction of motion of the motor ( ) as soon as it is detected that the windshield wiper ( ) has traveled a defined distance.

Windshield wiper drive device

The device for controlling automatic operation of a windshield wiper in a motor vehicle includes a central electronic control unit provided with means for triggering wiping operations of the windshield wiper; a rain sensor including a detector for rain on the windshield and a device for generating sensor signals for the triggering of individual wiping operations according to detector response, which is connected to the control unit in order to furnish the sensor signals to the control unit, and a sensitivity control device for adjusting rain sensor sensitivity, which includes a display device for observing the rain sensor sensitivity or parameters controlling it optically and buttons operable to adjust the rain sensor sensitivity or at least one of the parameters controlling it.

Device for controlling automatic operation of a windshield wiper with improved control means for setting rain sensor sensitivity

Drive device for a movable part that can be displaced between end

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Buehlertal, Germany

Peter Braun