Tire parameter sensing system having a tire-based unit that is responsive to a trigger signal and associated method
First Claim
1. A tire parameter sensing system for a vehicle, the system comprising:
- a vehicle-based unit; and
a tire-based unit, the tire-based unit being associated with a tire of the vehicle and rotating with the tire, the tire-based unit being located in a communication zone for communicating with the vehicle-based unit through only a portion of each rotation of the tire, the tire-based unit sensing at least one parameter of the tire and transmitting locator signals at predetermined intervals, the vehicle-based unit receiving a locator signal that is transmitted while the tire-based unit is located in the communication zone and, in response to receiving the locator signal, transmitting a trigger signal to the tire-based unit, the tire-based unit being responsive to receipt of the trigger signal for transmitting a parameter signal indicative of the sensed at least one parameter.
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Accused Products
Abstract
A tire parameter sensing system (12) for a vehicle (10) includes a vehicle-based unit (54) and a tire-based unit (34). The tire-based unit (34) is associated with a tire (16) and rotates with the tire. The tire-based unit (34) is located in a communication zone (190) for communicating with the vehicle-based unit (54) through only a portion of each rotation of the tire (16). The tire-based unit (34) senses at least one parameter of the tire (16) and transmits locator signals at predetermined intervals. The vehicle-based unit (54) receives a locator signal that is transmitted while the tire-based unit (34) is located in the communication zone (190) and, in response to receiving the locator signal, transmits a trigger signal to the tire-based unit (34). The tire-based unit (34) is responsive to receipt of the trigger signal for transmitting a parameter signal indicative of the sensed at least one parameter.
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Citations
17 Claims
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1. A tire parameter sensing system for a vehicle, the system comprising:
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a vehicle-based unit; and
a tire-based unit, the tire-based unit being associated with a tire of the vehicle and rotating with the tire, the tire-based unit being located in a communication zone for communicating with the vehicle-based unit through only a portion of each rotation of the tire, the tire-based unit sensing at least one parameter of the tire and transmitting locator signals at predetermined intervals, the vehicle-based unit receiving a locator signal that is transmitted while the tire-based unit is located in the communication zone and, in response to receiving the locator signal, transmitting a trigger signal to the tire-based unit, the tire-based unit being responsive to receipt of the trigger signal for transmitting a parameter signal indicative of the sensed at least one parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tire parameter sensing system for a vehicle, the system comprising:
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a tire-based unit associated with a tire of the vehicle and rotating with the tire;
a vehicle-based unit having a reader portion mounted on the vehicle at a location near the tire to which the tire-based unit is associated, the vehicle-based unit being configured to communicate with the tire-based unit when the tire-based unit is located in a communication zone with the reader portion, the tire-based unit being located in the communication zone with the reader portion through only a portion of each rotation of the tire;
the tire-based unit including a parameter sensing portion for sensing at least one parameter of the tire and a communication portion for communicating with the vehicle-based unit;
the communication portion of the tire-based unit transmitting locator signals at predetermined intervals, the vehicle-based unit being responsive to receipt of a locator signal for transmitting a trigger signal from the reader portion to the tire-based unit, the communication portion of the tire-based unit, in response to receiving the trigger signal, transmitting to the vehicle-based unit a parameter signal indicative of the at least one parameter of the tire. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of operating a tire parameter sensing system of a vehicle in which a tire-based unit is associated with a tire of the vehicle and rotates with the tire, the tire-based unit being located in a communication zone with a vehicle-based unit through only a portion of each rotation of the tire, the method comprising the steps of
sensing, with the tire-based unit, at least one parameter of the tire; -
transmitting locator signals from the tire-based unit at predetermined intervals;
transmitting a trigger signal from the vehicle-based unit to the tire-based unit in response to receipt of a locator signal at the vehicle-base unit, and transmitting a parameter signal indicative of the at least one parameter of the tire from the tire-based unit to the vehicle-based unit in response to receipt of the trigger signal at the tire-based unit. - View Dependent Claims (15, 16, 17)
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Specification