Method and apparatus for identifying remote sending units in a vehicle
First Claim
1. A method for identifying a set of radio-frequency sending units, wherein each unit associated with a respective tire of a vehicle, said method comprising the following steps:
- a) receiving radio-frequency signals transmitted by the sending units to a receiving means, each radio frequency signal comprising an identifier associated with the respective sending unit; and
b) storing information indicative of respective identifiers that persist during a learning period while the vehicle is in motion, with respective tires based on the respective tire pressure.
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Abstract
A remote tire pressure monitoring system includes a sending unit for each monitored tire, and the sending units transmit RF signals, each including an identifier ID(i) and a pressure indicator P(i). A receiver operates in a learn mode in which the receiver associates specific identifiers either with the vehicle or with specific tires. During the learn mode the vehicle is driven at a speed above a threshold speed, such as thirty miles an hour, and identifiers are associated with either the vehicle or the respective tires of the vehicle only if they persist for a selected number of signals or frames during the learning period. In one example, the tires are inflated with different pressures according to a predetermined pattern, and the pressure indicators of the receive signals are used to associate individual tire positions with the respective sending units.
109 Citations
12 Claims
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1. A method for identifying a set of radio-frequency sending units, wherein each unit associated with a respective tire of a vehicle, said method comprising the following steps:
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a) receiving radio-frequency signals transmitted by the sending units to a receiving means, each radio frequency signal comprising an identifier associated with the respective sending unit; and b) storing information indicative of respective identifiers that persist during a learning period while the vehicle is in motion, with respective tires based on the respective tire pressure. - View Dependent Claims (2, 3, 4)
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5. A method for Identifying and locating a set of remote tire pressure sending units during a learning period, each sending unit associated with a respective tire of a vehicle, said method comprising the following steps:
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(a) inflating a set of tires comprising tires T(1) . . . T(N) with separate respective tire pressures P(1) . . . P(N), wherein each respective tire pressure is less than a next respective tire pressure P(1)<
. . . <
P(N);(b) receiving signals transmitted by the sending units, each signal comprising an identifier associated with the respective sending unit and a pressure indicator indicative of a respective sensed pressure; (c) associating with respective tires information indicative of the identifiers in accordance with the respective indicators. - View Dependent Claims (6, 7, 8, 9)
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10. An apparatus for identifying and locating a set of remote tire pressure sending units, each associated with a respective tire of a vehicle, said apparatus comprising:
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means for receiving signals transmitted by the sending units to a receiving means, each signal comprising an identifier associated with the respective sending unit and a pressure indicator indicative of a respective sensed pressure; means for associating respective tires with information indicative of respective identifiers, based on respective pressure indicators during a learning period. - View Dependent Claims (11, 12)
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Specification