公开(公告)号：US11994633B2

公开(公告)日：2024-05-28

申请号：US17645557

申请日：2021-12-22

Applicant: DENSO CORPORATION

Inventor： Syoya Ishida ,  Takuya Nomura ,  Satoru Noro

IPC: G01S7/524 ,  G01S15/87 ,  G01S15/93

CPC classification number: G01S7/524 ,  G01S15/87 ,  G01S15/93

Abstract: A plurality of ultrasonic sensors are configured such that search ultrasonic waves transmitted from the respective ultrasonic sensors have mutually different characteristics that are mutually distinguishable. A transmission timing setting unit is configured to set a transmission timing of transmitting the search ultrasonic wave for each of the ultrasonic sensors, such that the plurality of ultrasonic sensors transmit the respective search ultrasonic waves at respective transmission timings that are mutually different. The transmission timing setting unit is configured to set a delay time between a first transmission timing, which is a transmission timing of the first ultrasonic sensor, and a second transmission timing, which is a transmission timing of the second ultrasonic sensor, with the delay time being determined based on a positional relationship between the first ultrasonic sensor and the second ultrasonic sensor.

公开(公告)号：US11971479B2

公开(公告)日：2024-04-30

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

CPC classification number: G01S15/931 ,  G01S7/521 ,  G01S2015/938

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.