公开(公告)号：US20220155428A1

公开(公告)日：2022-05-19

申请号：US17649870

申请日：2022-02-03

Applicant: DENSO CORPORATION

Inventor： Yu KOYAMA ,  Youhei SUZUKI ,  Dai KONDOU ,  Satoru NORO ,  Hideki OOTSUKA

IPC: G01S7/524 ,  G01S15/931

Abstract: In a drive device for driving an ultrasonic transmitter, a drive signal generating unit generates a drive signal for driving the ultrasonic transmitter, based on a base signal having a plurality of unit frequency signals arranged in a time series, corresponding to respective codes forming a code sequence. When a first unit frequency signal and a second unit frequency signal chronologically adjacent to it are switched in a discontinuously switching state that is different from a continuously switching state where the first and second unit frequency signals are switched such that a target frequency for a transmission frequency changes continuously at a substantially constant rate, the drive signal generating unit shifts the frequency in at least a switching portion immediately after start of the second unit frequency signal, in a same direction as a direction of frequency change from the first unit frequency signal to the second unit frequency signal.

公开(公告)号：US20220057507A1

公开(公告)日：2022-02-24

申请号：US17519326

申请日：2021-11-04

Applicant: DENSO CORPORATION

Inventor： Masayoshi SATAKE ,  Youhei SUZUKI ,  Kensuke KOBAYASHI ,  Dai KONDO ,  Syoya ISHIDA ,  Yudai YAMAMOTO ,  Kenji FUKABORI

IPC: G01S15/931 ,  G01S7/521

Abstract: An ultrasonic sensor is provided with an ultrasonic element that converts between an electrical signal and an ultrasonic vibration and an element accommodating case having a bottomed cylindrical shape and accommodating the ultrasonic element inside thereof. The element accommodating case includes a side plate portion formed in a cylindrical shape that surrounds a directional center axis, and a bottom plate portion that closes one end side of the side plate portion in an axial direction which is parallel to the directional center axis. The ultrasonic element is attached to the bottom plate portion. The bottom plate portion includes at least one protrusion. The protrusions vibrate together with the bottom plate portion when the bottom plate portion vibrates as an ultrasonic vibration.

公开(公告)号：US20220237923A1

公开(公告)日：2022-07-28

申请号：US17658979

申请日：2022-04-12

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Youhei SUZUKI ,  Yoshiki HAYAKAWA ,  Hidenori TANAKA ,  Akihiro KIDA ,  Kunihiro SUGIHARA ,  Yutaka HAMAMOTO ,  Masumi FUKUMAN

IPC: G06V20/58 ,  G06T7/73 ,  G06T7/269

Abstract: An object detection device is configured to be mounted to an own vehicle to detect an object present around the own vehicle. The object detection device includes a coordinate acquisition section and an object recognition section. The coordinate acquisition section acquires position coordinates of a detection point corresponding to the object on the basis of a plurality of images captured at different positions along with movement of the own vehicle by one imaging section mounted to the own vehicle. The object recognition section recognizes the object without using position coordinates of a movement point that is a detection point corresponding to a moving object but using position coordinates of a stop point that is a detection point different from the movement point.