MEMORIZING LOCATION OF TIRES IN TPMS AND SMART ENTRY SYSTEM
First Claim
1. A vehicle system comprising:
- tire sensors mounted in, on or adjacent respective tires of a vehicle, each tire sensor being configured to transmit an RF signal, which includes anidentification signal associated with the respective tire sensor, and to detect an LF field;
low frequency (“
LF”
) antennas mounted on the vehicle, each antenna being configured to transmit an LF field to wake up two tire sensors;
an RF receiver mounted on the vehicle configured to receive the RF signals from the tire sensors after the tire sensors have awakened;
a memory; and
an electronic control unit (“
ECU”
) in communication with the antennas, the receiver and the memory, wherein the ECU is configured to receive the identification signals from the tire sensors via the receiver, wherein the ECU is further configured to determine locations of the respective tire sensors based on which antenna woke up the tire sensor transmitting the respective identification signal and whether the identification signal matches other received identification signals, wherein the ECU is further configured to store the identification signals in the memory with the identification signals being associated with the respective tire sensors that transmitted the identification signal.
1 Assignment
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Accused Products
Abstract
A vehicle system includes a plurality of tire sensors, a plurality of low frequency (“LF”) antennas and an ECU. Each tire sensor is mounted in a respective tire of the vehicle. Each LF antenna is mounted on the vehicle and is configured to transmit an LF field to wake up two tire sensors. The ECU is in communication with the tire sensors, via a receiver, and the LF antennas. The ECU is configured to receive identification signals from the respective tire sensors and to determine locations of the respective tire sensors based on which antenna woke up the tire sensor transmitting the respective identification signal and whether the respective identification signal matches other received identification signals. The ECU is further configured to store the identification signals in the memory with the identification signals being associated with the respective tire sensors that transmitted the identification signal.
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Citations
18 Claims
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1. A vehicle system comprising:
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tire sensors mounted in, on or adjacent respective tires of a vehicle, each tire sensor being configured to transmit an RF signal, which includes anidentification signal associated with the respective tire sensor, and to detect an LF field; low frequency (“
LF”
) antennas mounted on the vehicle, each antenna being configured to transmit an LF field to wake up two tire sensors;an RF receiver mounted on the vehicle configured to receive the RF signals from the tire sensors after the tire sensors have awakened; a memory; and an electronic control unit (“
ECU”
) in communication with the antennas, the receiver and the memory, wherein the ECU is configured to receive the identification signals from the tire sensors via the receiver, wherein the ECU is further configured to determine locations of the respective tire sensors based on which antenna woke up the tire sensor transmitting the respective identification signal and whether the identification signal matches other received identification signals, wherein the ECU is further configured to store the identification signals in the memory with the identification signals being associated with the respective tire sensors that transmitted the identification signal. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13)
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7. The system of claim 7, wherein the rear LF antenna, the left side LF antenna, and the right side LF antenna each are configured to transmit an LF field to wake up three tire sensors, wherein a common identification signal transmitted from respective tire sensors awakened by the LF fields corresponds to a respective tire sensor in a spare tire for the vehicle.
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14. A method of localizing tire sensors on a vehicle, the method comprising:
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transmitting a low frequency (“
LF”
) tire sensor wake up signal from four antennas to wake up tire sensors located in tires on the vehicle, wherein each antenna is configured and positioned on the vehicle with respect to the tire sensors to transmit a respective LF tire sensor wake up signal to wake up two tire sensors;in response to receiving the tire sensor wake up signals, transmitting RF signals including an identification signal from tire sensors to an RF receiver on the vehicle; receiving the RF signals including the identification signal via the RF receiver into the ECU; comparing the received identification signals; determining locations of the respective tire sensors based on which antenna woke up the tire sensor transmitting the respective identification signal and whether the respective identification signal matches other received identification signals; and memorizing the identification signals by storing each identification signal and a corresponding tire sensor in a memory that is in communication with the ECU. - View Dependent Claims (15, 16, 17, 18)
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Specification