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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10371805 B1

PDFFull Text
Date of Patent:
Aug. 06, 2019

Filed:

Oct. 21, 2015

Ultrasonic object detection apparatus

Applicants:

Denso Corporation, Kariya, Aichi-pref., JP;

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Nippon Soken, Inc., Nishio, Aichi-pref., JP;

Inventors:

Mitsuyasu Matsuura, Nishio, JP;

Taketo Harada, Kariya, JP;

Takuya Nomura, Kariya, JP;

Motonari Ohbayashi, Nagakute, JP;

Hironobu Ishijima, Toyota, JP;

Assignees:

DENSO CORPORATION, Kariya, Aichi-pref., JP;

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;

NIPPON SOKEN, INC., Nishio, Aichi-pref., JP;

Attorney:

Knobbe, Martens, Olson & Bear, LLP

Primary Examiner:

Isam A Alsomiri

Assistant Examiner:

Jonathan D Armstrong

Int. Cl.
CPC ...
G01S 15/00 (2006.01); G01S 7/526 (2006.01); G01S 15/93 (2006.01); G01S 15/02 (2006.01); G01S 7/52 (2006.01); G01S 7/529 (2006.01); G01S 15/87 (2006.01); G08G 1/16 (2006.01);
U.S. Cl.
CPC ...
G01S 7/526 (2013.01); G01S 7/52006 (2013.01); G01S 7/529 (2013.01); G01S 15/025 (2013.01); G01S 15/87 (2013.01); G01S 15/93 (2013.01); G01S 15/931 (2013.01); G01S 2015/938 (2013.01); G08G 1/16 (2013.01);
Abstract

An obstacle detection apparatus includes: a transceiver transmitting a transmission wave and receiving an ultrasonic wave; a transmission controller; a receiver circuit detecting a signal level of a receiving wave; a distance calculator sequentially calculating a distance to an object reflecting the transmission wave; a memory storing the distance to the object; an obstacle determination device determining whether the object is an obstacle; and a reception level monitoring device monitoring the signal level of the receiving wave before the transmission wave being transmitted. When the signal level exceeds a predetermined threshold, the obstacle determination device sets a first number of determination data elements to an increased number of determinations for a predetermined period to be used for determining whether the object is the obstacle, as being larger than a second number of determination data elements used when the signal level does not exceed the predetermined threshold.

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