Tyre pressure monitoring system
First Claim
1. A tyre pressure monitoring system for a vehicle comprising:
- at least one receiver responsive to signals transmitted by transmitters, with each transmitter associated with a vehicle tyre;
a memory;
a list of identity tags captured by said receiver from signals transmitted by said transmitters stored in said memory;
a list of confidence values also stored in said memory, each of said confidence values associated with one of said identity tags; and
a control unit in communication with said receiver and said memory, said control unit operative to modify said confidence values with each of said confidence values being indicative of a confidence that said associated stored identity tag corresponds to a transmitter of a tyre associated with said vehicle such that, over time, the system is able to capture and learn the identities of tyres that belong to the vehicle and distinguish from tyres that do not belong to the vehicle, said control unit also operative to monitor at least one parameter of said vehicle and said received signals to determine a confidence value associated with an identity tag with one of said at least one parameters being a speed of said vehicle.
1 Assignment
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Accused Products
Abstract
A tyre pressure monitoring or warning system comprising at least one receiver responsive to signals transmitted by transmitters associated with one or more tyres. The system including a memory which stores a list of identity tags captured by the receiver, and a list of associated confidence values for each identity tag indicative of the confidence that the stored identity tag corresponds to a transmitter that belongs to the vehicle. The list may be split into a member and a candidate list comprising those identity tags that are deemed to refer and that possibly refer respectively to transmitters associated with the vehicle respectively. Initiators may be provided to initiate transmission from the transmitters in order to locate the position of each tyre.
66 Citations
61 Claims
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1. A tyre pressure monitoring system for a vehicle comprising:
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at least one receiver responsive to signals transmitted by transmitters, with each transmitter associated with a vehicle tyre; a memory; a list of identity tags captured by said receiver from signals transmitted by said transmitters stored in said memory; a list of confidence values also stored in said memory, each of said confidence values associated with one of said identity tags; and a control unit in communication with said receiver and said memory, said control unit operative to modify said confidence values with each of said confidence values being indicative of a confidence that said associated stored identity tag corresponds to a transmitter of a tyre associated with said vehicle such that, over time, the system is able to capture and learn the identities of tyres that belong to the vehicle and distinguish from tyres that do not belong to the vehicle, said control unit also operative to monitor at least one parameter of said vehicle and said received signals to determine a confidence value associated with an identity tag with one of said at least one parameters being a speed of said vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 58, 59, 60, 61)
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29. A tyre pressure monitoring system for a vehicle comprising:
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at least one receiver responsive to signals transmitted by transmitters, with each transmitter associated with a vehicle tyre; a memory; a list of identity tags captured by said receiver from signals transmitted by said transmitters stored in said memory; a list of confidence values also stored in said memory, each of said confidence values associated with one of said identity tags; and a control unit in communication with said receiver and said memory, said control unit operative to modify said confidence values with each of said confidence values being indicative of a confidence that said associated stored identity tag corresponds to a transmitter of a tyre associated with said vehicle such that, over time, the system is able to capture and learn the identities of tyres that belong to the vehicle and distinguish from tyres that do not belong to the vehicle, said control unit also operative to remove stored identity tags from one of said member list and said candidate list if they have an associated confidence value that meets a predefined criterion.
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53. A tyre pressure warning system comprising:
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an initiator associated with each road wheel of a vehicle which is in use; a receiver which receives signals from any transmitters which are within an operational range of said receiver; a processor in communication with said receiver, said processor operative to process said received signals; a memory in communication with said processor; a list of identity tags captured by said receiver from said received signals stored in said memory; a list of confidence values also stored in said memory, each of said confidence values associated with one of said identity tags and indicative of a confidence that the system has that said identity tag corresponds to a transmitter that belongs to said vehicle with said processor also being operative to modify said confidence values to learn which transmitters belong to said vehicle, and to learn where said learnt transmitters are located on said vehicle by monitoring in turn signals received said transmitters in response to a prompt from each initiator, said processor further being operative to monitor at least one parameter of said vehicle and said received signals to determine a confidence value associated with an identity tag with one of said at least one parameters being a speed of said vehicle. - View Dependent Claims (54, 55, 56, 57)
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Specification