US 12,326,502 B2
Object detection device
Sakiko Nishino, Nisshin (JP); Yu Koyama, Nisshin (JP); and Takuya Nomura, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jul. 21, 2023, as Appl. No. 18/357,001.
Application 18/357,001 is a continuation of application No. PCT/JP2021/046831, filed on Dec. 17, 2021.
Claims priority of application No. 2021-009007 (JP), filed on Jan. 22, 2021.
Prior Publication US 2023/0358884 A1, Nov. 9, 2023
Int. Cl. G01S 15/04 (2006.01); G01S 7/524 (2006.01); G01S 7/526 (2006.01); G01S 15/931 (2020.01)
CPC G01S 15/04 (2013.01) [G01S 7/524 (2013.01); G01S 7/526 (2013.01); G01S 2015/932 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An object detection device for detecting an object by transmitting and receiving ultrasonic waves, comprising:
a transmitter that transmits an ultrasonic wave;
two or more receivers, each of which receives an ultrasonic wave and outputs a reception signal according to the received ultrasonic wave;
a comparator that compares the plurality of reception signals output from the two or more receivers and calculates a degree of similarity between the plurality of reception signals; and
a determiner that makes a determination as to whether there is an object to be detected, based on the degree of similarity,
wherein
the determiner makes the determination by taking into account an amount of change in the degree of similarity.