公开(公告)号：US20190277967A1

公开(公告)日：2019-09-12

申请号：US16331190

申请日：2017-09-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHINYA OGAWA ,  TAKASHI YOSHIDA ,  TORU ICHIKAWA

IPC: G01S15/93 ,  G01S7/526 ,  G01S15/04

Abstract: A detection device includes a transmitter, an extraction unit, and a detector. The transmitter causes an ultrasonic sensor used in a vehicle to successively transmit a first transmission wave of a first frequency and a second transmission wave of a second frequency. The extraction unit extracts a frequency component from a reflected wave received by the ultrasonic sensor, the reflected wave having a reception level greater than a predetermined threshold. The detector detects an obstacle based on an extraction result of the component of the frequency. An amplitude level of the second transmission wave is greater than an amplitude level of the first transmission wave. The amplitude level of the first transmission wave is set to make the reception level of the reflected wave of the first transmission wave from a road surface less than or equal to the predetermined threshold. The amplitude level of the second transmission wave is set to make the reception level of the reflected wave of the second transmission wave from a partial area of the road surface greater than the predetermined threshold.

公开(公告)号：US20170176594A1

公开(公告)日：2017-06-22

申请号：US15452968

申请日：2017-03-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TORU ICHIKAWA ,  SHINYA OGAWA ,  TOHRU FUKUDA ,  YUKI OSATO

IPC: G01S15/93 ,  G08G1/16

CPC classification number: G01S15/931 ,  G01S7/52004 ,  G01S7/524 ,  G01S7/527 ,  G01S15/878 ,  G08G1/16 ,  G08G1/165 ,  G08G1/166

Abstract: This obstacle detection device is mounted on a vehicle. This obstacle detection device includes a plurality of ultrasonic sensors, and a detector. The plurality of ultrasonic sensors transmits a plurality of ultrasonic waves of different frequencies to detection areas which overlap with each other at transmission timings which overlap with each other, and each of the ultrasonic sensors receives a returning ultrasonic wave. The detector identifies which one ultrasonic wave of a plurality of ultrasonic waves is reflected as the received returning ultrasonic wave, and detects a position of an obstacle existing around the vehicle.