TYRE SENSOR DEVICE

• US 20130025751A1
• Filed: 04/07/2011
• Published: 01/31/2013
• Est. Priority Date: 04/09/2010
• Status: Active Grant

• Current Assignee: Pirelli Tyre SPA (Pirelli & C SPA), Politecnico di Torino
• Original Assignee: Pirelli Tyre SPA (Pirelli & C SPA), Politecnico di Torino
• Inventors: Matekovits, Ladislau, Orefice, Mario, Dassano, Gianluca, Vietti, Guillermo
• Granted Patent: US 9,168,795 B2
• Time in Patent Office: Days
• US Class Current: 152/151
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0433 Radio signals
• CPC Class Codes: B60T 2240/03 Tire sensors
• CPC Class Codes: H01Q 1/2241 used in or for vehicle tyres
• CPC Class Codes: H01Q 9/26 with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength resonant loop antennas H01Q7/00
• CPC Class Codes: Y10T 152/10 Tires, resilient

Abstract

A sensor device adapted to be associated with a vehicle wheel includes a package enclosing at least one sensor and an electronic data processing apparatus and at least one antenna arranged on the package for at least one among the wireless transmission of data generated by the electronic apparatus and the wireless reception of data to be provided to the electronic apparatus. The at least one antenna is shaped to adhere to surfaces of the package.

Claims

1-18. -18. (canceled)

19. A sensor device adapted to be associated with a vehicle wheel, comprising:

a package enclosing at least one sensor and an electronic data processing apparatus; and

at least one antenna arranged on the package for at least one among wireless transmission of data generated by the electronic apparatus and wireless reception of data to be provided to the electronic apparatus, said at least one antenna being shaped to adhere to surfaces of the package.

20. The sensor device of claim 19, wherein said at least one antenna comprises:

a transmit antenna configured to transmit said data in the form of ultra wide band signals; and

a receiving antenna configured to receive data in the form of narrowband signals.

21. The sensor device of claim 20, wherein:

the package has a substantially polyhedral shape, and

the transmit antenna and the receiving antenna are essentially arranged on opposite faces of the package.

22. The sensor device of claim 20, wherein:

the transmit antenna is a folded dipole antenna, and

the receiving antenna is a strip monopole antenna.

23. The sensor device of claim 22, wherein said transmit antenna comprises an upper radiator element and a lower radiator element longitudinally extending along a frontal face of the package.

24. The sensor device of claim 23, wherein:

both the upper radiator element and the lower radiator element are folded around edges of the package so as to partially extend along lateral faces of the package; and

the upper radiator element and the lower radiator element are connected to each other by means of corresponding linking elements.

25. The sensor device of claim 23, wherein the transmit antenna comprises first and second feeding terminals located on a top surface of the package and coupled to the electronic data processing apparatus, the upper radiator element comprising a first upper element connected to the first feeding terminal and a second upper element connected to the second feeding terminal.

26. The sensor device of claim 22, wherein said receiving antenna is a strip antenna comprising a first section located on a lateral face of the package and a second section located on a back face of the package.

27. The sensor device of claim 26, wherein the second section of the receiving antenna has rectangular shape, longitudinally extending on the back face of the package.

28. The sensor device of claim 27, wherein the receiving antenna comprises third and fourth feeding terminals located on a top surface of the package and coupled to the electronic apparatus, the first section of the receiving antenna being connected to said third and fourth feeding terminals.

29. The sensor device of claim 20, wherein the transmit antenna is configured to transmit ultra wide band signals with a bandwidth of 500 MHz or less around a central frequency between 4.2. and 4.8 GHz.

30. The sensor device of claim 20, wherein the receiving antenna is configured to transmit narrowband signals with a bandwidth of 100 MHz or less around a central frequency between 2.4 and 2.5 GHz.

31. The sensor device of claim 20, wherein a shielding sheet is located inside the package for shielding transmit and receiving antennas from metallic parts located within the package.

32. The sensor device of claim 31, wherein the shielding sheet comprises a magnetically loaded dielectric material.

33. The sensor device of claim 26, wherein the transmit antenna comprises first and second feeding terminals located on a top surface of the package and coupled to the electronic apparatus, the upper radiator element comprising a first upper element connected to the first feeding terminal and a second upper element connected to the second feeding terminal, and wherein the transmit antenna is fed in a balanced way by the electronic apparatus through the first and second feeding terminals.

34. The sensor device of claim 29, wherein the receiving antenna comprises third and fourth feeding terminals located on a top surface of the package and coupled to the electronic apparatus, the first section of the receiving antenna being connected to said third and fourth feeding terminals, and wherein the receiving antenna is fed in an unbalanced way by the electronic apparatus through the third and fourth feeding terminals.

35. A vehicle wheel comprising:

a rim; and

a tyre fitted on said rim,

said wheel further comprising at least one sensor device according to claim 19, associated with at least one among said rim and said tyre.

36. A vehicle tyre comprising an inner surface and at least one sensor device according to claim 19, placed on said inner surface.