公开(公告)号：US20210405171A1

公开(公告)日：2021-12-30

申请号：US17470309

申请日：2021-09-09

Applicant: DENSO CORPORATION

Inventor： Kensuke KOBAYASHI ,  Satoru NORO

IPC: G01S7/521 ,  G01S15/931 ,  H04R1/08 ,  H04R17/02 ,  G01N29/34 ,  H01L41/113 ,  H01L41/047

Abstract: An ultrasonic sensor includes a first electrode, a second electrode, and a third electrode. The first electrode is provided an ultrasonic microphone that includes a vibration element that provides a function for converting between mechanical vibrations and electrical signals. The second electrode is externally from the ultrasonic microphone such that an electrical characteristic between the second electrode and the first electrode changes based on an adhesion state of substances adhering to the ultrasonic microphone. The third electrode is provided so as to suppress changes in the electrical characteristic between the first electrode and the second electrode caused by factors other than the adhesion of substances adhering to the ultrasonic microphone.

公开(公告)号：US20210311189A1

公开(公告)日：2021-10-07

申请号：US17349603

申请日：2021-06-16

Applicant: DENSO CORPORATION

Inventor： Yohei SUZUKI ,  Yu KOYAMA ,  Mitsuyasu MATSUURA ,  Satoru NORO ,  Tetsuya AOYAMA ,  Hideki OTSUKA

IPC: G01S15/931 ,  G01S15/10 ,  G01S7/523

Abstract: An object detecting apparatus is configured to detect a surrounding object. The object detecting apparatus is provided with a driving signal generation unit provided to generate a driving signal that drives a transmitter unit including a transmitter emitting transmission waves externally; and a control unit provided to control an output of the driving signal transmitted to the transmitter unit from the driving signal generation unit. The driving signal generation unit is configured to generate the driving signal of which the frequency changes stepwise.

公开(公告)号：US20210291824A1

公开(公告)日：2021-09-23

申请号：US16330573

申请日：2017-08-28

Applicant: DENSO CORPORATION

Inventor： Satoru NORO ,  Masakazu TAKEICHI ,  Takuya NOMURA

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

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.

公开(公告)号：US20200264302A1

公开(公告)日：2020-08-20

申请号：US16867421

申请日：2020-05-05

Applicant: DENSO CORPORATION

Inventor： Tetsuya AOYAMA ,  Yu KOYAMA ,  Satoru NORO

IPC: G01S15/04 ,  H04B11/00 ,  G08G1/16 ,  G01S15/931

Abstract: A transmission/reception control device is configured to control transmission and reception in an ultrasonic sensor. The ultrasonic sensor includes an ultrasonic transducer. The ultrasonic transducer is configured to transmit a probe wave as an ultrasonic wave and receive a reception wave. The reception wave includes a reflected wave of the probe wave. The transmission/reception control device includes a transmission frequency setting unit, a reception signal processing unit, and an object detection unit. The transmission frequency setting unit sets a frequency of the probe wave to a transmission frequency different from a resonance frequency of the ultrasonic transducer. The reception signal processing unit processes a reception result of the reception wave based on the probe wave transmitted with the transmission frequency. The object detection unit detects the object based on a result of processing by the reception signal processing unit.