Abstract: A system includes a signal processing unit including an antenna configured to receive a radio frequency signal as a received radio frequency signal, and a baseband amplifier coupled to the antenna. The system includes a processor configured to cause the communication unit to stop generating a radio frequency polling signal, set an amplification gain of the baseband amplifier to a first gain value, periodically record, at a sample rate, an indication of a magnitude of the amplified radio frequency signal to generate a plurality of sample values, at a predetermined time interval after the communication unit stopped generating the radio frequency polling signal, set the amplification gain of the baseband amplifier to a second gain value, and transmit the plurality of sample values to a classifier module to determine whether the radio frequency signal is received from a near-field communication-enabled device.

Abstract: Methods for operating a communications device that communicates via inductive coupling, methods for operating an NFC device, and a communications device that communicates via inductive coupling are disclosed.

Abstract: The technology disclosed here relates to a pressure container system. The pressure container system includes a plurality of pressure containers for storing fuel and at least one load-distributing base layer. The load-distributing base layer is advantageously arranged between a lower base plate and the plurality of pressure containers. The load-distributing base layer is designed such that forces F, which act locally on the lower base plate and which act on the lower base plate substantially in the direction of the vehicle vertical axis Z, can be distributed to the plurality of pressure containers.

Abstract: A motor vehicle has at least one pressure vessel for storing storage medium, preferably fuel, at least one pressure relief device for pressure relief of the at least one pressure vessel, and at least one opening through which storage medium flows out during a pressure relief.

Abstract: A filter element for filtration of an air stream includes: a folded filter medium forming a bellows, the filter medium being constructed at least in two layers and having a particle filter layer, an electrically conductive filter layer, and at least one edge band, the at least one edge band being connected to at least one outer side of the bellows. At least one further edge band is connected to an outer side of the bellows. The at least one further edge band is electrically conductive. The at least one further edge band forms a pocket open towards one side.

Abstract: A motor vehicle includes at least one pressure vessel for storing fuel, and at least one holder for holding the pressure vessel. When installed, the holder encloses one end of the pressure vessel. The holder has a hard shell and an inner layer, wherein at least regions of the inner layer, when installed, are arranged between the hard shell and the connecting element. The hard shell has a higher rigidity than the inner layer.

Abstract: A motor vehicle has a pressure vessel unit, the pressure vessels of which are arranged on both sides of a recess or depression in a passenger compartment floor.

Abstract: A pressure container arrangement includes a plurality of pressure containers, a number of safety valves, and a number of connection lines. The plurality of pressure containers are connected in fluid terms by the number of connection lines. At least one of the number of safety valves is disposed between a respective two of the plurality of pressure containers which are connected to each other. The number of safety valves are constructed to close from a predetermined maximum throughflow and/or from a predetermined maximum pressure difference.

Abstract: A method increases the safety and/or the reliability of the operation of a fuel cell stack. The method determines that the fuel cell stack is in a space with a reduced air exchange rate. The method determines consumption information with respect to an oxygen consumption of the fuel cell stack within an interval of time. The method determines, on the basis of the air exchange rate, inflow information with respect to an amount of oxygen which was supplied to the space within the interval of time. The method determines an estimated value for an oxygen content of air in the space on the basis of the consumption information and on the basis of the inflow information.

Abstract: A method of producing a barrier layer of a pressure vessel includes applying the barrier layer to a liner and/or to a fiber-reinforced layer of the pressure vessel while a pressure difference between the internal volume and the surroundings of the pressure vessel is being maintained.

Abstract: A pressure vessel for containing pressure, for example, high pressure associated with storage of compressed gaseous fuels, includes a wall which surrounds an interior space. The wall includes an arrangement of wall threads and a matrix. An internal structure having a number of internal threads is provided for bracing, the internal threads having portions embedding in the matrix adjacent to the wall threads. A method for producing a pressure vessel of this type is also provided.

Abstract: The present invention relates to a filter medium, a filter arrangement for the filtration of gas-particle systems comprising such a filter medium, a method for depleting pathogens and/or allergens from the air and other gases by means of such a filter medium, and the use of the filter medium for depleting pathogens and/or allergens from the air and other gases. The filter medium includes at least one acid-functionalized layer comprising at least one carrier material and at least one fruit acid having a pks1 value of 0 to 7. The at least one acid-functionalized layer is free of added C8 to C18 fatty acids and their esters and amides thereof. The at least one acid-functionalized layer contains the at least one fruit acid in an amount of 2 wt. % to 30 wt. %, based on the total weight of the at least one acid-functionalized layer.

Abstract: The disclosure relates to a method for unpacking and separating infusion bags into singles for supplying the bags to a device for further processing. It includes the following steps: Opening an outer packaging, in which the infusion bags are present, by an opening device, wherein the infusion bags are fastened in groups to a holding device inside the outer packaging. Separating the group of infusion bags, which are fastened to the holding device, from the outer packaging by a separating device. Position the holding device with the infusion bags fastened thereon in a transport device by a positioning device. Processing the infusion bags by device for further processing.

Abstract: A tank assembly includes a tank, at least one pressure relief valve, at least one heat transmission path, and at least one heat transmission element. The at least one pressure relief valve is configured to allow a pressure relief of the tank when a temperature threshold value at the pressure relief valve is exceeded. The heat transmission path and the pressure relief valve are connected via the at least one heat transmission element. The heat transmission element is changeable with respect to the heat transmission between the heat transmission path and the pressure relief valve.

Abstract: A pressure vessel stores fuel. The pressure vessel includes a liner, a fiber-reinforced layer, at least one end piece, and at least one outlet. The fiber-reinforced layer surrounds the liner, at least in some regions. The end piece is covered by the fiber-reinforced layer, at least in some regions. The at least one outlet is used to carry fuel that has collected in a boundary layer between the liner and the fiber-reinforced layer and is to be drained. The outlet surrounds the end piece, at least in some sections. The outlet is arranged and formed in such a way that the fuel to be drained escapes from the boundary layer into the outlet.

Abstract: Please substitute the new Abstract submitted herewith for the original Abstract: A method increases the safety and/or the reliability of the operation of a fuel cell stack. The method determines that the fuel cell stack is in a space with a reduced air exchange rate. The method determines consumption information with respect to an oxygen consumption of the fuel cell stack within an interval of time. The method determines, on the basis of the air exchange rate, inflow information with respect to an amount of oxygen which was supplied to the space within the interval of time. The method determines an estimated value for an oxygen content of air in the space on the basis of the consumption information and on the basis of the inflow information.

Abstract: A filter element for filtration of an air stream includes: a folded filter medium forming a bellows, the filter medium being constructed at least in two layers and having a particle filter layer, an electrically conductive filter layer, and at least one edge band, the at least one edge band being connected to at least one outer side of the bellows. At least one further edge band is connected to an outer side of the bellows. The at least one further edge band is electrically conductive. The at least one further edge band forms a pocket open towards one side.

Abstract: A ventilation system for a mobile structure, in particular a motor vehicle, includes: a variably adjustable filter device including at least one controllable, variable filter characteristic with regard to a pollutant class; means for collecting information about the air quality in the surroundings of the mobile structure and in particular information about the air quality in an interior of the mobile structure; and a control unit for varying filter characteristics of the filter device in a variable, in particular continuous, manner, on the basis of the information about the air quality.

Abstract: A tank device, in particular in a vehicle, has a pressure tank for storing fuel and a fuel line for filling the pressure tank which extends from outside of the pressure tank through a tank opening up to a free line end in the interior of the pressure tank. The fuel line in the pressure tank has at least one line outlet through which the fuel can flow out of the fuel line into the pressure tank. The fuel line, between the tank opening and the free line end, has a flexible line section such that the flexible line section moves when the pressure tank is filled.

Abstract: A filter element includes: a bellows including a pleated filter medium and edge strips bounding the bellows; and a functional space that adjoins the bellows and is arranged within the edge strips, having an interface between the bellows and functional space. The interface is provided with at least one cutout for receiving sensor elements and/or fragrancing elements.