Method of learning tire pressure transmitter ID
First Claim
1. In an automotive low tire pressure warning system having a transmitter in each vehicle tire for sending messages comprising transmitter identification (ID) and pressure data to a receiver, the receiver having a memory for a table of transmitter IDs and associated parameters, a method of learning the transmitter IDs during vehicle operation comprising the steps of:
- storing in the table received IDs which are not associated with low tire pressure in the table;
monitoring the activity of each transmitter to detect transmission failure When transmitters should be active;
counting failures of each transmitter; and
deleting from the rabble the ID of a transmitter having a limit number of failures.
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Accused Products
Abstract
A low tire pressure warning system has a pressure sender and a radio transmitter in each tire, and a vehicle mounted receiver includes a microprocessor controller programmed to automatically learn the IDs of the tire senders. An ID message and pressure report is transmitted from each sender and recorded in memory as main senders presumed to be those on the vehicle wheels. Subsequent new IDs are accepted as reserve senders. By monitoring sender activity the main senders are determined to be healthy or damaged and are replaced when not functioning by new sender IDs which are functioning.
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Citations
13 Claims
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1. In an automotive low tire pressure warning system having a transmitter in each vehicle tire for sending messages comprising transmitter identification (ID) and pressure data to a receiver, the receiver having a memory for a table of transmitter IDs and associated parameters, a method of learning the transmitter IDs during vehicle operation comprising the steps of:
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storing in the table received IDs which are not associated with low tire pressure in the table; monitoring the activity of each transmitter to detect transmission failure When transmitters should be active; counting failures of each transmitter; and deleting from the rabble the ID of a transmitter having a limit number of failures. - View Dependent Claims (2, 3)
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4. In an automotive low tire pressure warning system having a transmitter in each of four tires for sending messages comprising transmitter identification (ID), low tire pressure signals and state of health signals to a receiver, the receiver having a memory for a table of transmitter IDs and associated parameters, a method of learning;
- the transmitter IDs comprising the steps of;
storing the first four received IDs which are not associated with a low tire pressure signal as IDs of main transmitters; storing a limited number of subsequent IDs as IDs of reserve transmitters; monitoring the operation of each transmitter during vehicle operation; and replacing an ID of a main transmitter with a reserve ID when the main ID is not received during a prescribed amount of operation. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
- the transmitter IDs comprising the steps of;
Specification