Title:
SYSTEM AND METHOD FOR PERFORMING AUTO-LOCATION OF A TIRE PRESSURE MONITORING SENSOR ARRANGED WITH A VEHICLE WHEEL USING CONFIDENCE INTERVAL ANALYSIS AND CHANGE OF WHEEL DIRECTION
Document Type and Number:
WIPO Patent Application WO/2015/025227
Kind Code:
A3
Abstract:
A method for determining change of direction of a vehicle includes steps of maintaining a rolling window of ABS data indicative of ABS tooth count and capturing a relevant rolling window of ABS data at the predetermined one-measurement point; storing the rolling window of the ABS data indicative of ABS tooth in a buffer; monitoring the ABS data and detecting a valid stop event which causes the rate of change of ABS tooth count to substantially decrement to zero; and monitoring the ABS data and detecting a valid move event which causes the rate of change of ABS tooth count to substantially increment from zero. The method also includes steps of determining a presto phase relationship between at least two wheels based on the ABS tooth count stored in the buffer immediately prior to the valid stop event; determining a post-start phase relationship between at least two wheels based on the ABS tooth count stored in the buffer immediately subsequent to the valid move event; and correlating the pre-stop phase relationship and the post-start phase relationship to determine change of direction and confidence level.
Inventors:
GRAHAM GARY (GB)
WALKER PETER (GB)
MILLEN ALAN (GB)
BAIRD STEVEN (GB)
GREER JOHN (GB)
COALTER JAMES (GB)
FRIEL EDWARD (GB)
WALKER PETER (GB)
MILLEN ALAN (GB)
BAIRD STEVEN (GB)
GREER JOHN (GB)
COALTER JAMES (GB)
FRIEL EDWARD (GB)
Application Number:
PCT/IB2014/002555
Publication Date:
May 28, 2015
Filing Date:
August 22, 2014
Export Citation:
Assignee:
SCHRADER ELECTRONICS LTD (GB)
International Classes:
B60T8/171; B60C23/04; B60T8/172; B60W40/10; G01P13/04
Foreign References:
| DE102005016110A1 | 2006-10-12 | |||
| US20110313623A1 | 2011-12-22 | |||
| US20120194333A1 | 2012-08-02 | |||
| EP1193151A2 | 2002-04-03 |
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