Bridgestone Europe Nv/sa

Sara Amendola

Maria Cristina Caccami

Cecilia Occhiuzzi

Gaetano Marrocco

Nicola D'Uva

The invention concerns an RFID sensor device () for tires, designed to be embedded/integrated, at least partially, in/into, or applied to, a tire () and comprising a patch-type antenna that includes a multilayer structure comprising: a bottom ground plane (); an intermediate dielectric substrate () arranged on the bottom ground plane (); and one or more top conductive patches () arranged on the intermediate dielectric substrate () and covering partially or completely said intermediate dielectric substrate (), wherein said bottom ground plane () and said one or more top conductive patches () are short-circuited or capacitively coupled. The RFID sensor device () further comprises: a rigid or flexible board () arranged on said one or more top conductive patches () and/or the intermediate dielectric substrate (); an RFID chip () installed on the rigid/flexible board () and connected/coupled to said one or more top conductive patches (); a temperature sensor integrated into, or connected to, said RFID chip (); and a pressure sensor () installed on the rigid/flexible board () and connected to the RFID chip (). The bottom ground plane () is formed: by conductive textile/fabric/thread/fiber/yarn elements/layers or by a metal weft/net/mesh; or at least partially by conductive and/or metal elements/layers of the tire (). The intermediate dielectric substrate () is made at least partially of rubber, or is formed at least partially by dielectric and/or rubber elements/layers of the tire ().

RFID sensor device with patch-type antenna for tires

A system and method is provided for reading and/or writing data from/on RFID tags of tires conveyed on a conveyor belt in a conveyance direction, wherein each tire is fitted with a respective RFID tag storing a univocal identifier of said tire. An antenna is installed over or nearby the conveyor belt and configured to radiate RF signals toward a footprint area on the conveyor belt and receive backscattered RF signals from said footprint area. A reader is connected to the antenna to operate the latter in transmission and reception. A preliminary calibration step is applied to the reader and a reading and/or writing step is carried out by operating the calibrated reader.

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Rome, Italy

Sara Amendola