Patent ID: 7570157
Filing Date: 2009-08-04
Classification: B60C

Abstract:
1. A method of operating a tire pressure monitoring system for a vehicle comprising: calibrating a tire pressure sensor circuit in a first range associated with a first vehicle structure and a second range associated with a second vehicle structure; generating first calibration data for the first range; generating second calibration data for the second range; storing the first calibration data and the second calibration data in a memory of the tire pressure sensor circuit; generating a data signal corresponding to a pressure; selecting the calibration data in response to a relationship of the data signal to the first and second ranges to form a selected calibration for either the first range or the second range; calibrating the data signal with the selected calibration to form a pressure indicative signal; transmitting the pressure indicative signal to a receiver with a range status corresponding to the selected calibration; generating a pressure signal in response to the pressure indicative signal and the range status; and operating a tire pressure monitoring indicator with the pressure signal.