Abstract: A communication light device for vehicles having a number of light sources, having an elongated optical unit for generating a light signature, having a control unit for controlling the number of light sources such that a locally and/or temporally variable light emission and/or illuminated area is generated in the longitudinal extent of the elongated optical unit, wherein the communication light device is designed as a body styling part that is arranged on an exterior of the vehicle body and extends in the horizontal direction all the way along a front end and/or all the way along a rear end of the vehicle and/or all the way or partially along a longitudinal side of the vehicle.

Abstract: A method is provided for detecting inadmissible operating states of a work hydraulics of an agricultural tractor. The method includes providing at least one electrically actuated control valve, a branch allocated to the at least one control valve, and an operating unit for the manual actuation of the work hydraulics of a front linkage. The method also includes connecting the at least one electrically actuated control valve to a hydraulic consumer via a hydraulic coupling, supplying hydraulic fluid to a hydraulic lifting device of the front linkage, detecting a state variable indicative of a connection state of the hydraulic coupling by a sensor unit and communicated to a control unit, and deactivating the operating unit if the control unit identifies by way of the evaluation of the state variable that a hydraulic consumer is connected to the hydraulic coupling.

Abstract: A method for assisting a coupling operation to be carried out at a three-point powerlift of an agricultural tractor includes determining via a control unit in communication with an imaging device using image capture and analysis a spatial actual position of implement-side coupling points of the implement interface relative to the tractor-side coupling points, steering via the control unit the agricultural tractor along a predetermined trajectory into an end position provided for the attachment of the implement, and activating via the control unit the actuator arrangement in accordance with the course of the predetermined trajectory such that the tractor-side coupling points take up a spatial desired position provided for attaching the implement-side coupling points.

Abstract: A method is provided for detecting inadmissible operating states of a work hydraulics of an agricultural tractor. The method includes providing at least one electrically actuated control valve, a branch allocated to the at least one control valve, and an operating unit for the manual actuation of the work hydraulics of a front linkage. The method also includes connecting the at least one electrically actuated control valve to a hydraulic consumer via a hydraulic coupling, supplying hydraulic fluid to a hydraulic lifting device of the front linkage, detecting a state variable indicative of a connection state of the hydraulic coupling by a sensor unit and communicated to a control unit, and deactivating the operating unit if the control unit identifies by way of the evaluation of the state variable that a hydraulic consumer is connected to the hydraulic coupling.

Abstract: A method for operating a gas turbine plant having a gas turbine and an electric generator driven by the gas turbine. The method includes detecting an instantaneous power of the gas turbine plant; comparing the detected instantaneous power with a power limit value; and limiting the instantaneous power when the result of the comparison is that the detected instantaneous power is equal to or greater than the power limit value. A step of detecting at least one operating parameter of the gas turbine plant and a step of determining the power limit value as a function of the at least one detected operating parameter are then implemented, wherein the at least one operating parameter of the gas turbine plant includes an ambient pressure and the power limit value is increased when the ambient pressure increases.

Abstract: A method for operating a gas turbine plant having a gas turbine and an electric generator driven by the gas turbine. The method includes detecting an instantaneous power of the gas turbine plant; comparing the detected instantaneous power with a power limit value; and limiting the instantaneous power when the result of the comparison is that the detected instantaneous power is equal to or greater than the power limit value. A step of detecting at least one operating parameter of the gas turbine plant and a step of determining the power limit value as a function of the at least one detected operating parameter are then implemented, wherein the at least one operating parameter of the gas turbine plant includes an ambient pressure and the power limit value is increased when the ambient pressure increases.

Abstract: A near field communication (NFC) system includes a plurality of coils for coupling to an antenna of a portable device, wherein each two adjacent coils are partly overlapped with one another; a multiplexer selectively enabling at least one of the coils to build a communication with the antenna, wherein the coils enabled by the multiplexer are selected to have a best coupling effect with the antenna and are combined into an effective antenna; and at least one adaptation network for adapting an input/output of the effective antenna.

Abstract: An expansion bolt including an anchor bolt having an expansion section, and further including an expansion sleeve which surrounds the anchor bolt and which can be expanded by retracting the expansion section, and a spring element arranged on the anchor bolt. The spring element can be tensioned by inserting the anchor bolt into a bore hole and can retract the expansion section of the anchor bolt into the expansion sleeve when it is released. An indicator element indicates when a rated tension of the spring element is reached.

Abstract: A near field communication (NFC) system includes a plurality of coils for coupling to an antenna of a portable device, wherein each two adjacent coils are partly overlapped with one another; a multiplexer selectively enabling at least one of the coils to build a communication with the antenna, wherein the coils enabled by the multiplexer are selected to have a best coupling effect with the antenna and are combined into an effective antenna; and at least one adaptation network for adapting an input/output of the effective antenna.

Abstract: A method of monitoring a plurality of strings of a photovoltaic system connected to a power inverter includes measuring current values from individual strings to the power inverter; determining a reference current value from the measured current values; and standardizing the measured current values to the reference current value. The method further includes and analyzing the standardized current values of individual strings within representative time periods by comparison with comparison values established for the individual strings. Based on the analysis a failure of an individual string is ascertained.