DOOR OPEN DETECTION FOR USE WITH TPMS AND SMART ENTRY SYSTEM
First Claim
1. A vehicle system comprising:
- tire sensors mounted in, on or adjacent respective tires of the vehicle, each tire sensor being configured to transmit a signal and to detect an LF field;
low frequency (“
LF”
) antennas including a door-mounted antenna mounted on a door of the vehicle, each LF antenna being configured to transmit an LF tire sensor wake up field to wake up respective tire sensors;
a receiver mounted on the vehicle configured to receive signals transmitted from the tire sensors;
a door switch associated with the door having the door-mounted antenna mounted thereto, the door switch being configured for determining whether the door is open; and
an electronic control unit (“
ECU”
) in communication with the antennas, the receiver and the door switch, 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, and wherein the ECU is further configured to;
(1) disregard signals received from the tire sensors woken up by the door-mounted antenna when the door was open, or (2) inhibit the door-mounted LF antenna from transmitting the LF field to wake up the tire sensors when the door is open.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle system that can overcome at least some of the aforementioned shortcomings includes tire sensors mounted in, on or adjacent respective tires of the vehicle, LF antennas including a door-mounted antenna on a door of the vehicle, a receiver mounted on the vehicle, a door switch associated with the door having the door-mounted antenna mounted thereto, and an ECU in communication with the antennas, the receiver and the door switch. Each tire sensor is configured to transmit a signal and to detect an LF field. Each LF antenna is configured to transmit an LF tire sensor wake up field to wake up respective tire sensors. The receiver is configured to receive signals transmitted from the tire sensors. The door switch is configured for determining whether the door is open. The ECU is configured to receive identification signals from the respective tire sensors via the RF receiver: 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 respective identification signal matches other received identification signals. The ECU is further configured to: (1) disregard signals from the tire sensors woken up by the door-mounted antenna when the door was open or (2) inhibit the door-mounted LF antenna from transmitting the LF field to wake up the tire sensors when the door is open.
13 Citations
22 Claims
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1. A vehicle system comprising:
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tire sensors mounted in, on or adjacent respective tires of the vehicle, each tire sensor being configured to transmit a signal and to detect an LF field; low frequency (“
LF”
) antennas including a door-mounted antenna mounted on a door of the vehicle, each LF antenna being configured to transmit an LF tire sensor wake up field to wake up respective tire sensors;a receiver mounted on the vehicle configured to receive signals transmitted from the tire sensors; a door switch associated with the door having the door-mounted antenna mounted thereto, the door switch being configured for determining whether the door is open; and an electronic control unit (“
ECU”
) in communication with the antennas, the receiver and the door switch, 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, and wherein the ECU is further configured to;
(1) disregard signals received from the tire sensors woken up by the door-mounted antenna when the door was open, or (2) inhibit the door-mounted LF antenna from transmitting the LF field to wake up the tire sensors when the door is open. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for operating a vehicle system comprising:
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receiving a signal to transmit an LF field from a door-mounted LF antenna to wake up tire sensors disposed within tires mounted on a vehicle; determining whether a door to which the door-mounted LF antenna is mounted is open; where the door is open, disregarding the received signal to transmit the LF field; and where the door is closed, transmitting the LF field from the door-mounted LF antenna. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for operating a vehicle system comprising:
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transmitting a low frequency (“
LF”
) tire sensor wake up field from four antennas including a door-mounted LF antenna 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 field to wake up two tire sensors, wherein two of the antennas including the door-mounted LF antenna are also configured to transmit an LF fob wake up field to wake up a portable transmission/reception unit for keyless entry of the vehicle;determining whether a door to which the door-mounted LF antenna is mounted is open; in response to detecting the tire sensor wake up fields by respective tire sensors, transmitting signals including an identification signal from the tire sensors to a receiver on the vehicle; where the door is open, disregarding the received signal from the respective tire sensors awakened by the door-mounted antenna; and where the door is closed, receiving the respective signal including the respective identification signal from the respective tire sensors awakened by the door mounted-mounted antenna. - View Dependent Claims (17, 18, 19, 20)
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21. A vehicle system comprising:
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tire sensors mounted in, on or adjacent respective tires of the vehicle, each tire sensor being configured to transmit a signal and to detect an LF field; low frequency (“
LF”
) antennas including a door-mounted antenna mounted on a door of the vehicle and a side antenna mounted on a side of the vehicle opposite the side to which the door having the door-mounted antenna mounted thereto is located, each LF antenna being configured to transmit an LF tire sensor wake up field to wake up respective tire sensors;a receiver mounted on the vehicle configured to receive signals transmitted from the tire sensors; a door switch associated with the door having the door-mounted antenna mounted thereto, the door switch being configured for determining whether the door is open; and an electronic control unit (“
ECU”
) in communication with the antennas, the receiver and the door switch, 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, and wherein the ECU is further configured to localize a respective tire sensor based on matching identification signals being transmitted to the receiver from a respective tire sensor in response to the LF tire sensor wake up field from the door-mounted antenna and the side antenna.
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22. A method for operating a vehicle system comprising:
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transmitting low frequency (“
LF”
) tire sensor wake up fields to wake up tire sensors located in tires on the vehicle including a first LF tire sensor wake up field from a door-mounted LF antenna mounted to a door on a first side of the vehicle and a second LF tire sensor wake up field from a second antenna mounted on a second, opposite, side of the vehicle, wherein the door-mounted antenna is configured such that with the door being closed the first LF tire sensor wake up field is configured to wake up two tire sensors located in respective tires on the first side of the vehicle;determining whether the door is open; in response to detecting the tire sensor wake up fields by respective tire sensors, transmitting signals including an identification signal from the tire sensors to a receiver on the vehicle; where the door is open, localizing a respective tire sensor based on the respective identification signals received by the receiver in response to the first LF tire sensor wake up field and the second tire sensor wake up field.
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Specification