Siemens Aktiengesellschaft

Hoerbiger Ventilwerke Gmbh

Siemensn Aktiengesellschaft

Franz Seifert

Alfred Pohl

Wolf-Eckhart Bulst

Leonhard Michael Reindl

Clemens Ruppel

Peter Steinr&uuml;ck

Wolfgang Zeppelzauer

Wolf-Eckhart Buist

Robert Weigel

Folkhard Muller

Reinhard Steindl

Zhongping Zhang

Gerald Ostermayer

The tire comprises a radially inner carcass ( ), a base layer ( ) which is applied to said carcass radially, externally; a profile comprising numerous profile elements ( ) applied radially, externally to said base layer ( ); and a sensor ( ) which is located in the base layer ( ) and associated with one profile element ( ) selected from said profile elements ( ) and which is used to determine a maximum force exerted on said selected profile element ( ). The selected profile element ( ) is mechanically separate from all of the other profile elements ( ). The method for determining a wear value for a tire of this type that turns and rolls on a base surface ( ) provides that the maximum force is measured while the tire is rolling and that the wear value is determined from this maximum force.

Tire with a sensor and method for determining a wear variable of such a tire

This transmission method serves to transmit information between a base station (BS) and a multiplicity of subscriber stations (MS) in transmission channels of a broadband signal. The transmission channels can be distinguished by different codes (C , C , . . . , C ) which modulate the broadband signal and which themselves are each modulated by the information to be transmitted in the respective transmission channel and are superimposed in the broadband signal. In this context, there is provision for at least one of the transmission channels (for example C ) to be emphasized, as a prioritized transmission channel, in comparison with the other transmission channels (C , . . . , C ), in that its phase angle is shifted by a fixed amount in comparison with the phase angle of the other transmission channels.

Code-modulated transmission process and transmission system operating according thereto

A wear monitor suitable in particular for monitoring the wear and tear of rider rings (,) on the pistons (,) of horizontally operating reciprocating compressors presents a sensor (,) that monitors the thickness of the rider ring (,) at least indirectly, is arranged in the area of the rider ring (,) in such a way as to move together with it and can be interrogated without contact via a motionless interrogation unit (,), which communicates with an evaluation unit (,). The sensor (,) preferably presents a passive surface acoustic wave element (,), whose electromagnetic reflection behavior depends on the thickness of the rider ring (,) consequent upon the degree of wear and tear thereof and which communicates with a sensor antenna (,) moving together with it, while the interrogation unit (,) presents a communicating interrogation antenna (,).

Wear monitor

In a passive surface wave sensor for measured value determination, a measured value is transmitted by radio from a remote measuring location to an interrogation device, which transmits energy by radio to a sensor element as an interrogation pulse. The surface wave sensor is suitable for contactless measured value acquisition. A surface wave configuration is the sensor element and a surface wave reference element is provided for phase discrimination and/or propagation time measurement. As a further development, a sensor operated with chirped transmitting signals and having chirped reflectors is provided, in which the configuration has a reference function in place of the reference element. A sensor constructed in such a way that it has a chirped function has the characteristics of an imminently temperature-compensated sensor for measuring other physical or similar variables.

Passive surface wave sensor which can be wirelessly interrogated

A radio scanning system using acoustical surface waves (SW radio scanning system) includes a transceiver unit and sensor elements defining at least one parameter to be scanned. The transceiver unit has a transmitter transmitting question signals to the sensor elements and a receiver receiving and evaluating answer signals transmitted back by the sensor elements. The transmitter and the sensor elements are constructed in such a way that the question signals and the answer signals are chronologically inverse to one another. The sensor elements have different SW transit times.

Radio scanning system using acoustical surface waves (SW radio scanning

An identification and/or sensor system includes a sensor that queries an identification and/or sensor configuration which contains resonators. A receiver receives an answer signal from the identification and/or sensor configuration. The receiver includes a phase-locked loop for converting a resonator decay signal into a signal of constant frequency and constant envelope curve.

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Vienna, Austria

Franz Seifert