G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 7/10 (2006.01) G01S 13/02 (2006.01) G01S 13/75 (2006.01) G01S 13/34 (2006.01)
Patent
CA 2127282
Passive surface wave sensor for measured value determination, in which the measured value is transmitted by radio from the remote measuring location to an interrogation device (1), which transmits energy by radio to the sensor element (5, 15) as an interrogation pulse. This surface wave sensor according to the invention is suitable for contactless measured value acquisition, a surface wave arrangement being the sensor element and a surface wave reference element being 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 specified, in which there is in the arrangement a reference function in place of the reference element. A sensor designed such that it has a chirped function has the characteristics of an imminently temperature-compensated sensor (Figures 12, 13) for the measuring of other physical or similar variables.
Bulst Wolf-Eckhart
Muller Folkhard
Reindl Leonhard
Ruppel Clemens
Seifert Franz
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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