Abstract: A current sensor including at least one first current detection element, which detects a load current (Iload) through an electric conductor and provides an electric measurement signal in dependence on this load current, wherein the current detection element is connected to a signal processing unit, which includes a resistance element, which is configured such that, at least within a defined measurement region of the current sensor, the electrical resistance of the resistance element decreases if the load current detected by the current detection element increases.

Abstract: The invention relates to a current sensor including at least one resistance element on which voltage (UGS) for measuring the current (iMEAS) flowing through the resistance element is detected. The resistance element is designed so that at least, within a defined measurement range of the current sensor, the electric resistance of the resistance element reduces when the current (iMEAS) flowing through the resistance element increases.

Abstract: The invention relates to a method for synchronizing sensors in a sensor array, including at least one electronic control unit and at least one sensor, which are connected to each other by a first and a second line, wherein the sensor is supplied with electric power by the first and second lines, and additionally at least one data signal (a) is transmitted by the first and second lines from the sensor to the electronic control unit, wherein the electronic control unit transmits a defined supply voltage signal having varying polarity as a synchronization signal (b, c) to the sensor, whereupon the sensor transmits at least one data signal (a) to the electronic control unit, after the polarity of the synchronization signal has been reversed.

Abstract: A sensor and method for determining at least one internal parameter for an active sensor in a special mode of operation. The sensor has at least one sensor element, an evaluation circuit, at least two connecting lines, and a changeover module. The sensor is changed over between a normal mode of operation and the special mode of operation by means of the changeover module and is put into the special mode of operation for the purpose of determining the at least one internal parameter. The sensor has an electric offset source which is used in the special mode of operation to at least partially actuate the evaluation circuit on the basis of the supply voltage of the sensor which is applied to the two connecting lines such that the at least one internal parameter of the sensor can be ascertained from the sensor output signal.

Abstract: Active sensor for switching over into a special operating mode, wherein the sensor has at least one sensor element, one evaluation circuit and two connecting lines, each with a terminal for transmitting the sensor information, wherein a supply voltage of the sensor is applied to the two connecting lines, wherein the sensor comprises a switchover module with which it is possible to switch over between a normal operating mode and a special operating mode by reversing the polarity of the supply voltage which is applied to the two terminals. A method for actuating an active sensor and to the use of the sensor, in particular as a wheel speed sensor, in motor vehicles.

Abstract: A sensor for sensing speeds, at least including a sensor unit, which has a radiation emitter element, a sensor element, a preliminary optical element and an evaluation circuit, a sensor housing, which has a leadframe, and a dirt guard unit, which includes a lens, wherein the sensor unit is in electrical contact with the leadframe of the sensor housing, and the lens of the dirt guard unit caps off the sensor housing as a cover.

Abstract: Electronic circuit arrangement (5) with one or more semiconductor main relays (1) being connected to at least one semiconductor driver stage (3) for the actuation of loads (4), in which case the semiconductor main relay (1) connects the loads and the drivers to a voltage supply so that they can be disabled, and the semiconductor main relay(s) is (are) operated as a voltage controller in selected situations and as a semiconductor switch in the other situations. In addition, the invention relates to the use of the above circuit arrangement in a motor vehicle brake system, in particular in a driving dynamics control system, or a system for chassis control or in an electronic actuation unit for vehicle safety systems.

Abstract: Method in which the current is measured inside an integrated PWM control circuit using at least one A/D converter which is likewise integrated in the circuit is described. The PWM controller is provided for the purpose of driving inductive loads and is arranged, in particular, in an electronic circuit of an electronic controller for a motor vehicle braking system. Before determining the actual current of the PWM controller, which is determined using the at least one A/D converter, the current is smoothed using a low-pass filter. A circuit arrangement for carrying out the above method and its use in electronic motor vehicle control systems is also described herein.

Abstract: Active sensor for switching over into a special operating mode, wherein the sensor has at least one sensor element, one evaluation circuit and two connecting lines, each with a terminal for transmitting the sensor information, wherein a supply voltage of the sensor is applied to the two connecting lines, wherein the sensor comprises a switchover module with which it is possible to switch over between a normal operating mode and a special operating mode by reversing the polarity of the supply voltage which is applied to the two terminals. A method for actuating an active sensor and to the use of the sensor, in particular as a wheel speed sensor, in motor vehicles.

Abstract: An active sensor consisting of a measuring module and an interface module comprising at least one first current source, an input line and an output line, wherein the active sensor is supplied with energy via these two lines and the first current source is connected on the output side to the output line and the interface module generates the output signals of the active sensor in the form of current signals, wherein the interface module comprises a current sensing device which senses the load current of the measuring module, and a compensating device which can generate, on an output path connected to the output line, a first compensating current for compensating for amplitude fluctuations in the output current signals in dependence on the sensed load current of the measuring module. Also described is a method for compensating for amplitude fluctuations in the output current signals of an active sensor.

Abstract: Disclosed is a method for calibrating, mechanically adjusting, or calculating a drive current of an electromagnetically operable actuator. The actuator controls the flow of a fluid responsive to the differential pressure. The indicator of the influencing of the pressure caused by the actuator can be determined in advance by the intensity of the electric actuation of the actuator even without the use of pressure sensors, with one or more actuator-related characteristic curves, characteristic fields, or parameters KGind for the actuator being taken into account so that via these parameters a nominal flow G can be adjusted in a defined fashion in dependence on the current intensity I, and the actuator-related parameters are established automatically without using pressurizations of the actuator.

Abstract: In a method for producing and/or adjusting an electromagnetically controllable actuator which is appropriate to control the flow of a fluid, at least one electromagnetic property of the actuator is measured, and the measured electromagnetic property itself or a quantity derived therefrom is used as an actual value for a control of a correcting variable. This correcting variable is taken into account directly to produce or adjust the actuator. A suitable device for this calibration comprises a control circuit and a mounting location, where the actuator can be mounted into the device, and is designed to adjust at least one mechanical property of the actuator by way of the correcting variable.

Abstract: A method and device for determining the pressure of a fluid or the differential pressure prevailing at an actuator use an electromagnetically drivable actuator (4) for pressure measurement. For example, an electric control circuit is used to control the position of a valve actuating device or the force which acts on a valve actuating element.

Abstract: Disclosed are a method and circuit arrangement for determining the magnetic flux in at least one inductive component (1) which is electrically drivable by way of an electronic actuation or driver stage (3) by means of a drive signal (6), by evaluation and adjustment of a measuring signal induced by the magnetic flux of the inductive component using an electronic measuring device (4), and the magnetic-flux-responsive measuring signal (5) measured at the inductive component is actively maintained at a substantially constant value by means of the measuring device or the electronic actuation or the driver stage (3), and the time (t1, tc) is determined during which the drive signal is triggered, which acts on the inductive component with production of the measuring signal.