Abstract: A method and system for cooperative diversity visual cognition in a wireless sensor network is disclosed. The method and system are capable of solving distributed visual cognition tasks (for example, online simultaneous reconstruction of 3D models of a large area) by using multiple video streams and exploiting cooperative diversity video sensing information while ensuring an optimal tradeoff between energy consumption and video quality of images received from said multiple video streams.

Abstract: A method for classifying electrical sheet is produced. The electrical sheet is used to produce an electrical machine and is available in the form of a strip roll wherein a magnetic flux that changes over time and that causes a shape change of the strip roll and magnetic losses is produced in the strip roll using an excitation winding fed by a feeding device, the shape change and/or the magnetic losses are measured using a measuring device and the measurement signal obtained is fed to an evaluation device, and the evaluation device categorizes the electrical sheet in regard to noise emission and/or magnetic losses using the measurement signal.

Abstract: A method and a device for the recognition of a derailment state of a wheel (RAD) of a rail vehicle. The acceleration of the wheel (RAD) is measured perpendicularly to a rail plane (?) with at least one acceleration sensor (SEN), whereby from an acceleration signal (BSI) generated by the acceleration sensor (SEN) by means of simple integration (INT) over a time window of predeterminable magnitude, one determines a fall speed (FAG) of the wheel (RAD) in the direction of the rail plane (?), and whereby on the basis of the determined fall speed (FAG), one examines whether a derailed state exists.

Abstract: A rail vehicle having a vehicle body (WKA) comprising on at least one vehicle end a compression zone (STA) located behind an end carrier (ETR) of the vehicle body, and having a central buffer coupling (KUP) extending from a substantially vertical pivot axis (SWA) to the vehicle end and connected to said vehicle body via a coupling carriage (KSL) wherein said coupling carriage (KSL) is attached to said end carrier (ETR) and extending from said end carrier (ETR), bridging said compression zone (STA), towards the vehicle center, and which is guided longitudinally slidable on the vehicle body (WKA).

Abstract: A rail vehicle with at least two impact-absorbing posts (RS1, RS2) which are disposed in a front end region (END) and extend vertically to the floor (BOD) of the rail vehicle. A deformable area (KZO) is provided on the front side of the floor (BOD) and each impact-absorbing post (RS1, RS2) is connected to the roof section (DAB) of the rail vehicle via the upper-end region (OE1, OE2) thereof, each impact-absorbing post having, in the respective upper-end region thereof, a pre-determined collapsible region (OE1, OE2) where the buckling (SK1, SK2) of said post should occur in the event of a collision.

Abstract: There is described a powering unit comprising at least one transformer, at least one full bridge circuit via which a primary winding of the transformer is connected to a direct current voltage input, a secondary winding for triggering an output circuit with an output direct current voltage via a bridge-type rectifier circuit as well as an output choke coil and an output capacitor, and a discharge circuit consisting a diode, for a capacitor and of a resistor for reducing the secondary-side peak voltages. The powering unit has another secondary winding, another bridge-type rectifier circuit and another discharge circuit operable to trigger the output circuit with part of the output direct current voltage via the output choke coil and the output capacitor. Thus, there are fewer losses in the resistors and the performance is enhanced.

Abstract: There is described a method for measuring an alternating current which is generated using inverters and is fed into an AC power system, wherein a zero crossing signal of the AC power system is predefined, and wherein, triggered by the zero crossing signal, the measured alternating current is periodically adjusted in such a manner that an adjustment value which is assigned to the zero crossing signal is predefined, a measured value which is assigned to the zero crossing signal being adapted to said adjustment value. This method makes it possible for the measurement signal detected by a measuring circuit to be periodically adjusted using an adjustment value even during operation.

Abstract: A mains power supply unit for the purpose of supplying consumers that are connected directly or by way of a voltage system converter to a direct voltage branch of a mains power supply unit comprises a buffer capacitor (C) that can be charged from the mains supply and that still supplies the direct voltage branch for a predetermined minimum period of time in the event of a failure or interruption in the mains supply. In such an event, the buffer capacitor (C) can be charged by way of a dedicated charging circuit (3) to a voltage (U2), which, regardless of the voltage fluctuations in the direct voltage branch, is substantially constant and corresponds in a substantial manner to the upper limit value of the direct voltage (U1) to which limit value the mains power supply unit is dimensioned. The buffer capacitor can be connected onto the direct voltage branch by way of a controlled switch (S) in the event of undervoltage in the mains supply or in the direct voltage branch.

Abstract: A mains power supply for supplying an electricity consumer connected directly or via a converter to an unstabilised direct current branch of the mains power supply, having a buffer capacitor which can be charged from the direct current branch and which also supplies the direct current branch for a predetermined minimum period of time in the event of a mains power failure or interruption in power, and wherein the buffer capacitor (C) is connected via a high impedance charge resistance (R) at the voltage (U1) of the direct current branch, a voltage limiting means (D.sub.z) is connected in parallel with the buffer capacitor (C) and limits the voltage at the capacitor substantially to the minimum voltage (U.sub.

Abstract: Switched mode mains power supply unit having a transformer (Tr), which comprises a primary winding (L.sub.P) and at least one secondary winding (L.sub.S) as well as an auxiliary winding (L.sub.H), having a switch (S) controlled by a control circuit (A), by means of which switch the primary winding is connected to an input direct voltage (U.sub.E), having, connected downstream of the secondary winding, a rectifier (D1) together with a filtering means (C1) for producing an output direct voltage (U.sub.A) and having a regulator means (K1) for producing a first control variable (St1) for the control circuit (A) in dependence upon the deviation of the output voltage from a first set value (U.sub.Ref1), wherein the pulse duty ratio and/or the frequency of the control signal of the controlled switch depends upon the control variable, and also having an auxiliary rectifier (D2; Glr) connected downstream of the auxiliary winding (L.sub.H) in order to produce an auxiliary direct voltage (U.sub.

Abstract: A method for demodulating pulse messages, which have been converted into modulated signals, preferably for wireless digitized speech transmission, which is distinguished by minimal technical outlay and which can be carried out using circuits which can be designed in integrated circuit technology. The signal which is to be demodulated is subjected to quadrature modulation. Of the two quadrature components which have been thereby obtained one is subjected to a differentiation or an integration and the signal obtained in this manner and the signal of the other quadrature component are supplied, after analog-to-digital conversion, to in each case one comparator (9, 10). The digital output signals of the two comparators (9, 10) are assembled by means of a coincidence gate (11) to form the pulse message.

Abstract: In a current transformer arrangement for three-wire three-phase systems, use is made of a single busing transformer (4) arranged on the three-phase side. Two of the total of three phase conductors are pushed through the bushing transformer, specifically either with the same number of turns per unit length and in mutually opposite defined directions or with the same direction and with the ratio of different numbers of turns per unit length of 2:1 or with the same direction and a current flow halved in a phase conductor by a shunt (15). These arrangements prevent the occurrence of a zero resultant magnetic flux. The double secondary voltage produced by a double AW value occurring twice during each period is halved by an electronic correcting circuit. The control commands are derived from suitable control pulses for the thyristors (21-26) of the three-phase bridge circuit (16). Two correcting circuits are specified.

Abstract: A method for converting a sampled signal of an analog input signal to a digital output signal that is L data bits in length is provided.

Abstract: A switching matrix network provide switching of digital signals of different sampling frequencies by sampling the digital signals at a sampling frequency greater than any digital input signal and generating an interference signal as a measure of the phase difference or the frequency difference between the sampling frequency and the digital input signal using an input intermediate memory chain. The interference signals are transmitted in coded form through the switching matrix during sampling periods not occupied by data. The original input signal is regenerated at the output of the switching matrix from the interference signal using an output intermediate memory chain and clock regenerating circuits.