US 12,311,956 B2
Grade severity detection
Brian M Walker, Livermore, CA (US); and Johannes Boot, Oakland, CA (US)
Assigned to Curtis Instruments, Inc., Mount Kisco, NY (US)
Filed by Curtis Instruments, Inc., Mount Kisco, NY (US)
Filed on May 27, 2022, as Appl. No. 17/826,868.
Prior Publication US 2023/0382405 A1, Nov. 30, 2023
Int. Cl. B60W 40/11 (2012.01); B60W 40/13 (2012.01)
CPC B60W 40/11 (2013.01) [B60W 40/13 (2013.01); B60W 2040/1315 (2013.01); B60W 2510/0657 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for grade severity detection in a motorized vehicle, the apparatus comprising:
a first sensor configured to generate motion data indicative of at least one wheel of the motorized vehicle;
a second sensor, wherein torque data for the at least one wheel of the motorized vehicle is based on an output of the second sensor; and
a controller configured to calculate a grade of a surface upon which the motorized vehicle is traveling based on the torque data and one or more acceleration values derived from the motion data, and configured to perform a comparison of the calculated grade to a grade threshold,
wherein a grade severity message is generated based on the comparison, and
wherein a speed of the motorized vehicle is adjusted based on the comparison.