Enocean Gmbh

Siemens Aktiengesellschaft

Continental Automotive Gmbh

Klaus Pistor

Frank Schmidt

Andre Albsmeier

Markus Vester

Wolf-Eckhart Bulst

Oliver Sczesny

Stefan Schwarzer

Jan Bollenbeck

Daniel Evers

Martin Vossiek

Georg Bachmaier

Christian Hammer

Claus Seisenberger

Florian Poprawa

Thomas Hammer

Reinhard Freitag

Jörg Hüttner

Egid Schneider

Oliver Hennig

Sven Eisen

Thomas Wuchenauer

Georg Kuderewski

Andre Dölling

Axel Schmieder

Robert Baumgartner

Armin Wolf

Peter Faubel

Hans-Ulrich Blietz

The energy self-sufficient radiofrequency transmitter has at least one electromechanical transducer with a rectifier circuit connected downstream and with a voltage converter circuit. A logic circuit configuration is connected to the voltage converter circuit. The logic circuit configuration has a sequence controller a memory in which an identification code is stored. The energy self-sufficient radiofrequency transmitter also has a radiofrequency transmission stage that is connected to the logic circuit configuration and a transmission antenna.

Energy self-sufficient radiofrequency transmitter

A local antenna device for transmitting magnetic resonance (MR) signals of a plurality of MR receiving antenna elements to an MR signal processing device is provided. The local antenna device includes a plurality of analog-to-digital converters for scanning the MR signals and converting the MR signals to digital MR data, and a plurality of transmitting antenna elements for wirelessly transmitting the digital MR data to the MR signal processing device by the emission of an electromagnetic field. The local antenna device includes a plurality of transmitting devices for triggering the transmitting antenna elements and a plurality of spacer elements that is arranged and embodied on the local antenna device such that at least a defined minimum emission spacing is produced between the plurality of transmitting antenna elements and articles adjoining the local antenna device in at least one direction of a principal axis of emission of the electromagnetic field.

Local antenna device for transmitting magnetic resonance signals

The embodiments relate to an image reconstruction to be carried out on a base unit of a MRI system, where data is formed by reception signals obtained by a local coil unit. Provisions are made for an alternating magnetic field, modulated in accordance with a reference clock, the alternating magnetic field to be used by the local coil unit for obtaining electric energy for supplying local electronics of the local coil unit and the reference clock to be retrieved from the received alternating magnetic field by the local electronics, a radio signal containing MRI information representing the reception signals and clock information representing the retrieved reference clock to be produced by the local electronics and transmitted to the base unit, and the received radio signal to be processed by the base unit such that the data and the clock information are retrieved therefrom and provided for the image reconstruction.

System and methods for providing magnetic resonance imaging data for an image reconstruction

A method for wireless transfer of energy to a local coil system for a magnetic resonance system is provided. The method includes determining an energy requirement value representing a minimum energy level to be fed to the local coil system, so that the local coil system may carry out a predetermined function over a predetermined time period. Energy is transferred adaptively to the local coil system depending on the energy requirement value.

Adaptive energy transfer to a local coil system

A local coil system for a magnetic resonance system has a local coil for detecting MR response signals and a transmitter for wirelessly transmitting signals to the magnetic resonance system. At least one pseudo random device is operable to change signals in a pseudo random fashion in order to avoid interferences in the imaging.

Local coil system, magnetic resonance system and method for transmitting signals from a local coil

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.

Heating control system

For monitoring a combustion process in an internal combustion engine wherein a fuel-air mixture is ignited with a high-frequency plasma it is provided to determine the impedance of the plasma. A high-frequency signal is applied to the resonator with a capacity that is so low that no arcing-over forms on the electrodes and the high-frequency current and the high-frequency voltage are measured. The impedance of the ignited mixture is determined from the high-frequency current and the high-frequency voltage.

Method and device for monitoring a combustion process in an internal combustion engine

A sensor system has a least one voltage generator for conversion of non-electrical energy to electrical energy. At least one energy store is connected downstream from the voltage generator. At least one voltage converter is connected to the energy store such that its output signal is suitable for operation of a processor controller. At least one sensor is provided, and at least one transmitter enables wire-free transmission of transmission messages produced by the processor controller and containing at least one measured value from the at least one sensor. A timer circuit is triggered as a function of a voltage level of the at least one energy store, and activates the sensor system to transmit at least one transmission message after a specific time interval.

Wireless sensor system

The transmitter which can be fed thermally has at least one heat transducer element () with a downstream voltage transformer () and logic assembly () as well as a data transmission unit (), and is characterized in that the logic assembly () is designed on a ULP basis, and the data transmission unit () transmits a broadband signal.

Thermally feedable transmitter and sensor system

A sensor system (S, S') having a least one voltage generator () for conversion of non-electrical energy to electrical energy. At least one energy store () is connected downstream from the voltage generator (). At least one voltage converter () is connected to the energy store () such that its output signal is suitable for operation of a processor controller (). At least one sensor () is provided, and at least one transmitter () enables wire-free transmission of transmission messages which can be produced by the processor controller () and which contain at least one measured value from the at least one sensor (). A timer circuit () is provided, which can be triggered as a function of a voltage level of the at least one energy store (), and which activates the sensor system (S) in order to transmit at least one transmission message after a specific time interval.

An apparatus for supplying power, for example, to a sensor, has a passive piezoelectric transducer that can be deformed by a mechanical energy storage device. The transducer supplies a corresponding electrical voltage to operate the sensor. The piezoelectric transducer can be bent by deformation work that is emitted from the energy storage device.

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Linden, Germany

Klaus Pistor