Tire sensor localization utilizing speed corrected frequency
AssigneeSiemens VDO Automotive Corporation
InventorTejas B. Desai
Life of this patent
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Abstract
A method of localizing the location of a received signal from a tire pressure sensor includes sending an AM identification signal. The AM signal is adjusted for speed such that the frequency of the signal equals a constant multiplied by the speed of the vehicle. Each of the tire locations on a vehicle have an expected sequence of black-out points in the signal received by a receiver at any point on the vehicle. That is, given a particular vehicle design, the AM signal described above would be received at a receiver with an expected sequence of received peaks and black-out points. Since the frequency of the signal is adjusted for speed, the received signal will accurately allow the location of black-out points to be utilized to identify the tire location for a particular signal.
Claims7
A tire pressure monitoring system comprising:
- a plurality of tire pressure sensor/transmitters;
- a receiver and control for receiving signals transmitted by each of said tire pressure sensor/transmitters;
- said tire pressure sensor/transmitters including the ability to send an identification signal;
- and
- a control associated with said sensor/transmitters monitoring vehicle speed, and a frequency of transmission of said identification signal being adjusted at said tire pressure sensors/transmitters to be dependent upon said monitored vehicle speed.
Dependencies are inferred from the claim text.