LOCALIZATION OF TIRE FOR TPMS AND SMART ENTRY SYSTEM
First Claim
1. A vehicle entry/tire pressure monitoring system comprising:
- a left front tire sensor installed in a left front tire of a vehicle;
a left rear tire sensor installed in a left rear tire of the vehicle;
a right front tire sensor installed in a right front tire of the vehicle;
a right rear tire sensor installed in a right rear tire of the vehicle;
a first low frequency (“
LF”
) antenna mounted on the vehicle, the first antenna being configured to transmit a first LF field to wake up two of the tire sensors;
a second LF antenna mounted on the vehicle, the second antenna being configured to transmit a second LF field to wake up two of the tire sensors;
a third LF antenna mounted on the vehicle, the third antenna being configured to transmit a third LF field to wake up two of the tire sensors;
a fourth LF antenna mounted on the vehicle, the fourth antenna being configured to transmit a fourth LF field to wake up two of the tire sensors, wherein two of the antennas are also configured to transmit a SMART entry LF search field to wake up a portable transmission/reception unit for keyless entry of the vehicle; and
an ECU in communication with the tire sensors and the LF antennas, wherein 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle entry/tire pressure management 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. Some antennas can also be configured to transmit a SMART entry LF search field to wake up a portable transmission/reception unit for keyless entry of the vehicle. 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.
22 Citations
20 Claims
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1. A vehicle entry/tire pressure monitoring system comprising:
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a left front tire sensor installed in a left front tire of a vehicle; a left rear tire sensor installed in a left rear tire of the vehicle; a right front tire sensor installed in a right front tire of the vehicle; a right rear tire sensor installed in a right rear tire of the vehicle; a first low frequency (“
LF”
) antenna mounted on the vehicle, the first antenna being configured to transmit a first LF field to wake up two of the tire sensors;a second LF antenna mounted on the vehicle, the second antenna being configured to transmit a second LF field to wake up two of the tire sensors; a third LF antenna mounted on the vehicle, the third antenna being configured to transmit a third LF field to wake up two of the tire sensors; a fourth LF antenna mounted on the vehicle, the fourth antenna being configured to transmit a fourth LF field to wake up two of the tire sensors, wherein two of the antennas are also configured to transmit a SMART entry LF search field to wake up a portable transmission/reception unit for keyless entry of the vehicle; and an ECU in communication with the tire sensors and the LF antennas, wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of localizing tire sensors on a vehicle to present data to an operator of the 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 and two of the antennas are also configured to transmit an LF fob wake up signal to wake up a portable transmission/reception unit for keyless entry of the vehicle;in response to detecting the tire sensor wake up signals by respective tire sensors, 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 presenting tire data on a display at ignition ON and prior to movement of the tires based on the received RF signals and the determined locations of the respective tire sensors. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification