公开(公告)号：US12000969B2

公开(公告)日：2024-06-04

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

CPC classification number: 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：US11305764B2

公开(公告)日：2022-04-19

申请号：US16330573

申请日：2017-08-28

Applicant: DENSO CORPORATION

Inventor： Satoru Noro ,  Masakazu Takeichi ,  Takuya Nomura

IPC: B60W30/09 ,  B60R19/48 ,  G01S7/52 ,  G08G1/16 ,  B60W30/095 ,  G01S13/931 ,  G01S7/40

Abstract: An object detection apparatus applied to a vehicle having a sensor unit mounted on a predetermined member provided to the vehicle, the sensor unit being provided with an object detection sensor that detects position information of an object present around the vehicle and a tilt sensor that detects a tilt angle as inclination with respect to a predetermined direction, and performing a process of detecting the object based on the position information of the object detected by the object detection sensor, the object detection apparatus comprising a detachment state determination section that determines a detachment state of the predetermined member based on the tilt angle detected by the tilt sensor.