Ultrasonic sensor system for horizontally polarized transversal waves
AssigneesRobert Bosch GmbH, Karl Deutsch Pruef-und Messgeraetebau GmbH & Co. KG
InventorsVolker Arndt, Michael Lach, Michael Platte, Heinz-Ullrich Mueller
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Abstract
The invention relates to an ultrasonic sensor system, especially for controlling a resistance welding process. Said system comprises at least one receiver which is used to detect the ultrasonic signals from the area to be examined. At least two piezoelectric sensors (31, 32) are used as a receiver and are arranged in such a way that their polarization direction vectors indicate various directions, said vectors being projected in a plane perpendicular in relation to the propagation direction of an ultrasonic wave to be detected.
Claims9
An ultrasonic sensor device of a spot welding system for controlling or monitoring a resistance welding process, the device comprising at least one receiver which detects ultrasonic signals from an area to be examined, said receiver being formed by at least two piezoelectric sensors that are arranged in such a way that their polarization direction vectors indicate various directions, said vectors being projected in a plane perpendicular to a propagation direction of an ultrasonic wave to be detected.
An ultrasonic sensor device of a spot welding system for controlling or monitoring a resistance welding process, the device comprising at least one receiver which detects ultrasonic signals from an area to be examined, said receiver being formed by at least two piezoelectric sensors that are arranged in such a way that their polarization direction vectors indicate various directions, said vectors being projected in a plane perpendicular to a propagation direction of an ultrasonic wave to be detected, wherein output variables from said sensors are coupled by adding squared individual signals and/or determining a root of an addend.
An ultrasonic sensor device of a spot welding system for controlling or monitoring a resistance welding process, the device comprising at least one receiver which detects ultrasonic signals from an area to be examined, said receiver being formed by at least two piezoelectric sensors that are arranged in such a way that their polarization direction vectors indicate various directions, said vectors being projected in a plane perpendicular to a propagation direction of an ultrasonic wave to be detected, wherein output variables from said sensors are coupled by forwarding only a greater of individual signals for further processing.
Dependencies are inferred from the claim text.