US 11,999,353 B2
Detection device for detecting road surface information related to movable body and control thereof
Ippei Sugae, Kariya (JP); and Kosuke Wakita, Kariya (JP)
Assigned to AISIN CORPORATION, Kariya (JP)
Filed by AISIN CORPORATION, Kariya (JP)
Filed on Feb. 8, 2022, as Appl. No. 17/666,771.
Claims priority of application No. 2021-019366 (JP), filed on Feb. 9, 2021.
Prior Publication US 2022/0250625 A1, Aug. 11, 2022
Int. Cl. B60W 40/06 (2012.01)
CPC B60W 40/06 (2013.01) [B60W 2420/54 (2013.01); B60W 2552/20 (2020.02); B60W 2554/4049 (2020.02)] 4 Claims
OG exemplary drawing
 
1. An object detection device comprising:
a transmission and reception unit configured to transmit a transmission wave from a movable body moving on a road surface and receive a reflected wave from a road surface; and
a generation unit configured to generate road surface information regarding a change in the road surface based on a difference between echo information indicating a change over time in an intensity of the reflected wave reflected from the road surface and received by the transmission and reception unit and predetermined reference echo information indicating a predetermined change over time in an intensity of a reflected wave from a predetermined road surface,
wherein the generation unit generates the road surface information based on a difference between a predetermined reference road surface detection period of the predetermined reference echo information which is a reference time period where the intensity is equal to or higher than a predetermined road surface threshold value in the predetermined reference echo information, and a road surface detection period which is a time period during which the intensity of the reflected wave is equal to or higher than the predetermined road surface threshold value in the echo information.