Abstract: An optoelectronic sensor includes at least one light transmitter for the transmission of light signals into a monitored zone, at least one light receiver for the reception of light signals transmitted from the light transmitter and a control device for the generation and/or influencing of the light signals and for the generation of an object detection signal in the case of the presence of an object in the monitored region in dependence on the output signals of the light receiver. In this connection, the light signals transmitted into the monitored zone by the light transmitter are each generated by an output signal modulated in accordance with the spread spectrum method using a random pseudo-noise code.

Abstract: An optoelectronic sensor includes at least one light transmitter for the transmission of light signals into a monitored zone, at least one light receiver for the reception of light signals transmitted from the light transmitter and a control device for the generation and/or influencing of the light signals and for the generation of an object detection signal in the case of the presence of an object in the monitored region in dependence on the output signals of the light receiver. In this connection, the light signals transmitted into the monitored zone by the light transmitter are each generated by an output signal modulated in accordance with the spread spectrum method using a random pseudo-noise code.

Abstract: A method of secure transmission of data signals over a bus system is described, where the data signals are generated by at least one sensor and are transmitted over the bus system to at least one actuator. The data signals generated by at least one of the sensors are encoded according to a predetermined secure encoding method before being introduced into the bus system. The encoded data signals are fed into the bus system and transmitted over it. The encoded data signals are received by at least one of the actuators and decoded according to a decoding method corresponding to the predetermined secure encoding method. In addition, an electronic monitoring system is described for carrying out this method.

Abstract: An apparatus for the monitoring of a protection region which comprises a monitoring unit for the detection of an object penetrating into the protection region is described. The monitoring unit has at least one output at which a control signal for the excitation of a device to be monitored, in particular a switching signal for the switching off of the device, can be produced when an object penetrates into the protection region. Furthermore, the apparatus comprises at least one connection for a switch, in particular for an emergency off switch, through which the device can be excited, in particular switched off. The connection is designed as input of the monitoring unit, with it being possible to generate the control signal for the device to be monitored at the output of the monitoring unit through actuation of a switch which is connected to the input.

Abstract: In a voltage converter for switching mode, for example a push-pull voltage converter (GW), during a starting operation the switching-on pulses for the switching elements (S1, S2) are dimensioned to be of different length, specifically in such a way that the mean value of the energy-consuming current does not exceed a prescribed limiting value.By contrast with conventional methods, there is no regulation of the switching-on pulses, but the different switching-on times in a plurality of subphases are prescribed in a fixed fashion as a function of the inductance (LS) of the DC/DC voltage converter (GW).The method according to the invention ensures that the mean value of the inrush current cannot become substantially higher than a prescribed nominal value. This is advantageous, in particular, for the power supply of travelling wave amplifiers. FIG.