Patent ID: 11872853
Assignee: INFINEON TECHNOLOGIES AG
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A tire pressure monitoring system (TPMS), comprising:
a communication interface device comprising:
a first radio frequency (RF) transceiver configured to:
generate at least one wake-up signal,
wherein the at least one wake-up signal is configured to cause a TPMS sensor module to transition from a low power state to an active state;

an antenna array configured to:
transmit, via an advertising channel, the at least one wake-up signal as a directional RF beam, wherein the advertising channel comprises a limited bandwidth relative to an RF data communication link; and

a first processing circuit configured to:
monitor for a response signal in response to the antenna array transmitting the at least one wake-up signal;

the TPMS sensor module having a sensor identifier (ID), wherein the TPMS sensor module comprises:
a pressure sensor configured to:
measure an internal air pressure of a first tire, and
generate first tire pressure information;

a second RF transceiver configured to:
receive the at least one wake-up signal; and

a second processing circuit configured to:
measure a signal strength of the at least one wake-up signal,
compare the measured signal strength to a predetermined threshold, and
trigger the response signal on a condition that the measured signal strength is equal to or greater than the predetermined threshold,

wherein the second RF transceiver is further configured to:
transmit the response signal via the RF data communication link, the response signal comprising at least the sensor ID.