OBJECT DETECTION DEVICE

WIPO Patent Application WO/2019/065282

A1

This object detection device is provided with: transmission units (3, 4) which transmit ultrasonic waves as probe waves; reception units (3, 7) which receive the ultrasonic waves and output a signal; a distance detection unit (9) which detects the distance to an object on the basis of the output signal of the reception units (3, 7) when the frequency of the ultrasonic waves received by the reception units (3, 7) changes in the same manner as the frequency of the probe waves; and a transmission sound pressure adjustment unit (12) which adjusts the sound pressure of the probe waves such that the sound pressure of the probe waves or reflection waves of the probe waves is within a predetermined transmission target range. The transmission units (3, 4) transmit, as probe waves, first probe waves having a frequency that changes with time and second probe waves having a frequency that changes with time at a rate of change different from that of the first probe waves, and the transmission sound pressure adjustment unit (12) ensures that the sound pressure of the first and second probe waves or reflection waves of the first and second probe waves is within the transmission target range.

SUZUKI YOHEI (JP)
HARADA TAKETO (JP)
MATSUURA MITSUYASU (JP)
AOYAMA TETSUYA (JP)

PCT/JP2018/034056

April 04, 2019

September 13, 2018

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DENSO CORP (JP)

G01S15/10; G01S7/524; G01S7/526

JPS61220593A	1986-09-30
JPS6227685A	1987-02-05
JP2011232055A	2011-11-17
JP2519256B2	1996-07-31
JP2841402B2	1998-12-24
US20070121097A1	2007-05-31

YOU-I PATENT FIRM (JP)

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