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.:
Date of Patent:
Dec. 28, 2021
Filed:
Oct. 08, 2019
Denso Corporation, Kariya, JP;
Yohei Suzuki, Nisshin, JP;
Taketo Harada, Nisshin, JP;
Mitsuyasu Matsuura, Nisshin, JP;
Takuya Nomura, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An object detection device which determines an amplitude Aof an ultrasonic wave received by a receiving unit, detects a frequency fof the ultrasonic wave, sweeps a frequency fof a pulse signal after a predetermined time has elapsed from start of generation of the pulse signal, and determines that the received ultrasonic wave is a reflected wave of the probe wave when the frequency fafter the amplitude Abecomes a predetermined reference value or more from start of transmission of the probe wave makes the same change as the frequency f. When an ultrasonic wave received by a receiver is determined to be a reflected wave of the probe wave, the object detection unit calculates a distance to an object based on a time from transmission of the probe wave to reception of the ultrasonic wave.