Schrader Electronics Ltd.
|Schrader Electronics Ltd. Patent applications|
|Patent application number||Title||Published|
|20150057878||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 - 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 pre-stop 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.||02-26-2015|
|20130079977||SYSTEM AND METHOD FOR PERFORMING AUTO-LOCATION OF A TIRE PRESSURE MONITORING SENSOR ARRANGED WITH A VEHICLE WHEEL - Auto-location systems and methods of tire pressure monitoring sensor units arranged with a wheel of a vehicle detect a predetermined time (T||03-28-2013|
|20110209536||WHEEL POSITION DETERMINATION USING REVOLUTION COUNTER - A wheel position determination system and method to count wheel revolutions in a wheel unit of a tire monitoring system. An indication of the count is transmitted, optionally along with an indication of a left/right side position of the wheel on the vehicle, and an identification unique to the transmitting wheel unit, to a central controller of the tire monitoring system. In the central controller of the tire monitoring system, the count is compared with wheel speed information for the vehicle, such as from an ABS system, to determine if one wheel on each side of the vehicle is rotating at a different speed. Based at least in part upon a determination that each wheel speed is unique, a determination of wheel location may be made.||09-01-2011|