Tire localization systems and methods in tire pressure monitoring systems
First Claim
Patent Images
1. A tire pressure monitoring system (TPMS) comprising:
- a plurality of fixed wheel rotation sensors each associated with a wheel of a vehicle and configured to acquire wheel rotation data;
at plurality of wheel units each associated with a wheel of a vehicle and comprising an acceleration sensor configured to acquire at least one acceleration sample; and
a control unit associated with the vehicle and configured to receive the wheel rotation data from each of the fixed wheel rotation sensors and the at least one acceleration sample from each of the plurality of wheel units and to localize each of the plurality of wheel units to a particular wheel of the vehicle from a joint processing rotational angle of a wheel determined from the wheel rotation data and at least one corresponding acceleration sample.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments relate to tire localization in tire pressure monitoring systems (TPMS). In embodiments, a TPMS includes a wheel unit and a control unit. Each wheel unit collects acceleration data and transmits that data to the control unit for processing. The control unit processes the data and, using additional data received from another vehicle system, for example an antilock braking system (ABS) or electronic stability control (ESC) system, correlates the data in order to localize each wheel unit to a particular wheel of the vehicle. Advantages include increased processing power at the control unit as compared to the wheel unit.
30 Citations
16 Claims
-
1. A tire pressure monitoring system (TPMS) comprising:
-
a plurality of fixed wheel rotation sensors each associated with a wheel of a vehicle and configured to acquire wheel rotation data; at plurality of wheel units each associated with a wheel of a vehicle and comprising an acceleration sensor configured to acquire at least one acceleration sample; and a control unit associated with the vehicle and configured to receive the wheel rotation data from each of the fixed wheel rotation sensors and the at least one acceleration sample from each of the plurality of wheel units and to localize each of the plurality of wheel units to a particular wheel of the vehicle from a joint processing rotational angle of a wheel determined from the wheel rotation data and at least one corresponding acceleration sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of localizing a wheel in a tire pressure monitoring system (TPMS) comprising:
-
acquiring acceleration data comprising at least one acceleration sample at each of a plurality of wheels; acquiring wheel rotation data comprising a rotational angle of a wheel corresponding to the at least one acceleration sample at each or the plurality of wheels; communicating the acceleration data and the wheel rotation data from each of the plurality of wheels to a control unit; and jointly processing the acceleration data and the wheel rotation data by the control unit to associate the acceleration data with a particular one of the plurality of wheels at which corresponding wheel rotation data was acquired. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
Specification