Object detection apparatus and method

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United States of America Patent

PATENT NO 9921303
APP PUB NO 20160033628A1
SERIAL NO

14728394

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Abstract

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Provided are an object detection apparatus and method. The object detection apparatus includes an amplifier configured to amplify a reflected ultrasonic wave signal with a variable gain, a gain controller configured to set the variable gain such that the reflected ultrasonic wave signal received in at least one predetermined time zone is amplified with a high gain, compared to in other time zones, a comparator configured to compare a signal on an envelope corresponding to the signal amplified by the amplifier with a predetermined threshold and output the signal on the envelope when the signal is greater than the threshold, a calculator configured to calculate an absolute value of a first-order differential value of the signal on the envelope, and a time at which a maximum of the absolute value of the first-order differential value is calculated, and a detector configured to detect an object using a third time, the third time being a time at which the maximum is calculated, before a second time, the second time being a time at which the signal greater than the threshold is output.

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Patent Owner(s)

Patent OwnerAddress
HYUNDAI MOBIS CO LTD203 TEHERAN-RO GANGNAM-GU SEOUL 06141

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lee, Jae Young Yongin-si, KR 168 774

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