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
摘要
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.
申请公布号
WO2015025227(A2)
申请公布日期
2015.02.26
申请号
WO2014IB02555
申请日期
2014.08.22
申请人
SCHRADER ELECTRONICS LIMITED
发明人
GRAHAM, GARY;WALKER, PETER;MILLEN, ALAN;BAIRD, STEVEN;GREER, JOHN;COALTER, JAMES;FRIEL, EDWARD