US 11,731,468 B2
Radio-transmitting sensor for a vehicle wheel, comprising a dual-mode antenna circuit
Sébastien Kessler, Toulouse (FR); Mohamed Cheikh, Toulouse (FR); Alexis Morin, Toulouse (FR); and Frédéric Lathiere, Toulouse (FR)
Assigned to CONTINENTAL AUTOMOTIVE FRANCE, Toulouse (FR); and CONTINENTAL AUTOMOTIVE GMBH, Hannover (DE)
Appl. No. 17/257,935
Filed by Continental Automotive France, Toulouse (FR); and Continental Automotive GmbH, Hannover (DE)
PCT Filed Jul. 10, 2019, PCT No. PCT/EP2019/068506
§ 371(c)(1), (2) Date Jan. 5, 2021,
PCT Pub. No. WO2020/011840, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 1856399 (FR), filed on Jul. 12, 2018.
Prior Publication US 2021/0268850 A1, Sep. 2, 2021
Int. Cl. B60C 23/04 (2006.01)
CPC B60C 23/0454 (2013.01) [B60C 23/0452 (2013.01); B60C 23/0488 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A radio-transmitting sensor for a vehicle wheel, suitable for measuring at least one physical quantity and for transmitting a radio signal representative of this measured physical quantity, the sensor comprising:
a measurement and transmission circuit,
an antenna impedance matching circuit, and
an antenna circuit,
the sensor further comprising a sensitivity switch controlled by the measurement and transmission circuit and suitable for switching the antenna circuit according to two modes:
a dynamic mode in which the antenna circuit is configured as a magnetic antenna, and in which the sensor transmits said radio signal representative of the measured physical quantity, this signal comprising transmitted data frames; and
a static mode in which the antenna circuit is configured as an electric antenna.