US 11,814,055 B2
Direction detection using a wheel speed sensor and exciter ring
Nianqing Zhou, Avon, OH (US); Shu Yan Liu, Calgary (CA); Daniel P Zula, North Ridgeville, OH (US); and Thomas J Hayes, Lakewood, OH (US)
Assigned to Bendix Commercial Vehicle Systems LLC, Avon, OH (US)
Filed by Bendix Commercial Vehicle Systems LLC, Elyria, OH (US)
Filed on Jun. 16, 2021, as Appl. No. 17/349,334.
Prior Publication US 2022/0402507 A1, Dec. 22, 2022
Int. Cl. B60W 40/10 (2012.01); G01P 21/02 (2006.01); B60T 8/171 (2006.01); B60W 50/00 (2006.01); G01P 13/04 (2006.01); B60T 8/172 (2006.01)
CPC B60W 40/10 (2013.01) [B60T 8/171 (2013.01); G01P 21/02 (2013.01); B60T 8/172 (2013.01); B60T 2270/416 (2013.01); B60W 2050/0043 (2013.01); B60W 2420/503 (2013.01); B60W 2520/28 (2013.01); B60W 2720/24 (2013.01); G01P 13/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A direction detection system for a commercial vehicle comprising:
at least one active wheel speed sensor (aWSS) for transmitting signals;
an exciter ring having teeth for inducing a change in the signals from the aWSS; and
a controller having control logic, wherein the control logic:
receives a first series of signals from the aWSS,
compares the first series of signals to an array of predefined signals,
determines the direction of travel of the vehicle based on the first series of signals from the aWSS matching the array of predefined signals;
receives a second series of signals from the aWSS;
determines that the exciter ring has at least one anomaly in response to at least one signal in the second series of signals having a first variance;
updates the array of predefined signals to include a representation of the first variance to create an array of updated signals; and
determines the direction of travel of the vehicle based on a subsequent series of signals matching one of the array of predefined signals and the array of updated signals.