|Patent application number
|Heating control system - A heating control system, monitoring system and predictive maintenance radio sensor system. The heating control system comprises at least one temperature transducer element having a downstream voltage transformer; an energy storage device which is electrically coupled to the at least one voltage transformer; a logic assembly coupled to the energy storage device and having sequence control; a data transmission unit coupled to the logic assembly; and a sensor, coupled to the logic assembly, for measuring ambient parameters.
|Locatable and Autonomously Powered Backscatter Transponder for Registering Measured Variables - There is described a backscatter system comprised of a base station and of a completely passive transponder. The transponder is capable of reading out quantities from sensors and an energy stand-alone manner, of transmitting the readout quantities to the base station, and to carry out a runtime-based and thus highly precise distance measurement between a completely passive tag and base station. The power supply of the transponder ensues from the radio field emitted by the base station.
|RADAR ARRANGEMENT - An FMCW radar has a variable frequency microwave signal source for outputting a microwave signal, a frequency divider, a phase-locked loop, a loop filter and a reference signal source. The frequency divider is connected between the output of the variable frequency microwave signal source and an input of the phase-locked loop. The loop filter is connected between the output of the phase-locked loop and the input of the variable frequency microwave signal source. The reference signal source is connected to an additional input of the phase-locked loop. The frequency divider is adjustable, in particular digitally adjustable. A method for operating an FMWC radar includes adjusting a variable frequency microwave signal source by way of a closed-loop control circuit which uses a reference signal of a reference signal source, especially of a quartz oscillator, as the reference value, and a frequency-divided output signal of the microwave signal source as the feedback value.
|METHOD AND DEVICE FOR TRAVEL TIME-BASED LOCATION IDENTIFICATION WITH THE AID OF A TRIGGERED OR SELF-TRIGGERING REFERENCE SIGNAL - A method for the detection of an object by the TDOA principle is provided. The object transmits a signal, which is received by a plurality of stations having known positions. The stations' clocks can have different unknown time delays in relation to each other. An additional stationary reference station having a known position relative to the stations and transmitting a signal that is received by the stations is provided. An unknown transmission delay can be generated between the emission of the signal from the object and the emission of the signal from the reference station. For each station the difference in travel time between receipt of the signal from the object and the signal from the reference station and the difference of the travel time differences between the stations are determined. Mathematical algorithms for determining the location are performed.
|Method for encoding a contactless switching system - An embodiment of the invention relates to a contactless switching system and an embodiment relates to a method for encoding same with at least one sensor and at least one signal generator, where the signal generator sends at least one data sequence and the sensor receives the data sequence. In at least one embodiment, an aim is to specify a technical teaching for encoding a contactless switching system inexpensively and in a versatile fashion. To this end, at least one embodiment of the invention proposes anchoring user-implementable encoding in the checksum of the data sequence or the checksum computation code, so that the checksum which the data sequence contains is used to check the quality of the data transmission and at the same time to implement the encoding.
|Device and Method for Multi-Dimensional Location of Target Objects, In Particular Rfid Transponders - A radio-based system and a method for multi-dimensional location of a target object are provided. A target object may be, in particular, an RFID transponder. In this context, a base signal is emitted by a base station and is sent back by a back scatter transponder. A distance between the base station and the transponder is determined by means of a frequency spacing ΔF between two maximum values in the base band of the spectrum of a base signal, transmitted with a simultaneously received response signal superimposed on it, from an antenna of the base station. Phase evaluation is carried out in order to calculate a target deviation angle α
|Method for Increasing the Location Accuracy for Unsynchronized Radio Subscribers - The invention relates to a method for increasing the location accuracy for unsynchronized radio subscribers, in which phase evaluation is used to ascertain the position of a transmitter which is to be located. The transmitter to be located and a further transmitter, whose location is known, respectively send a sequence of N signals to at least two receivers, wherein the transmission channel to be used for transmitting a signal is varied, in line with the invention, on the basis of a prescribed, symmetrical hopping scheme. The advantageous characteristics of the hopping scheme and the additional application of the TDOA (time difference of arrival) principle mean that highly accurate location is possible.
|Network analyzer with an n-port network having at least two ports for measuring the wave parameters of a measurement object - A network analyzer includes an n-port network with two ports for measuring wave parameters of a measurement object. Each port has a feed for a radio-frequency signal from a signal source. Signal components of the radio-frequency signal fed into the respective port are reflected at the measurement object and the signal components of one or more radio-frequency signals fed into at least one other port are transmitted through the measurement object to the respective port are measured as wave parameters. The two ports are supplied with different radio-frequency signals, wherein frequencies or frequency bands are offset with respect to one another by a frequency offset. Reflected and transmitted signal components of the radio-frequency signals are measured at the same time at the two ports.
|Emission of High Frequency Pulses in a Magnetic Resonance Tomography System - A method for emitting a sequence of high frequency pulses that may have different envelopes in a magnetic resonance tomography system is provided. A digital instruction signal that specifies the envelope for the high frequency pulses that are to be emitted is received. A digital control signal is transmitted to a high frequency unit for generating high frequency pulses, depending on the instruction signal. A test signal that allows notification of a current overload situation is received. The current control signal is reduced if the test signal indicates an overload situation.
|Two-Channel Magnetic Resonance Imaging - A two-channel magnetic resonance tomography system is provided with a regulation circuit for an amplification system in order to be able to take into account different load situations of the MRI system in a flexible and efficient manner. It is thus possible to improve the MRI measurements greatly if the MRI system is set to the respective load situation beforehand by an idle state measurement. The adaptation may optionally also be carried out during the MRI measurement. Therefore, a multiplicity of completely different load situations may be taken into account in an optimized manner by the regulation circuit.
|GENERATION OF TRIGGER EVENTS BY RFID LABELS - In an apparatus and by a method for detecting a tag having a transponder for identification by electromagnetic waves (RFID), a synchronization unit is electromagnetically coupled to the transponder and outputs a trigger signal for activating a supplementary system based on the occurrence of data interchange with the transponder. Any desired devices can therefore be easily activated and uniquely identified using an identification number of the transponder.