Obstacle detection apparatus

Details Obstacle detection apparatus Obstacle detection apparatus

2008-07-02

2011-10-04

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

Reexamination Certificate

active

08031556

ABSTRACT:
An obstacle detection apparatus for a vehicle is provided. The apparatus includes an ultrasonic sensor and a controller. The ultrasonic sensor detects a presence of an obstacle around the vehicle and a distance to the obstacle by transmitting an ultrasonic wave and receiving the ultrasonic wave reflected by the obstacle. The controller controls the ultrasonic sensor. The ultrasonic sensor includes an ultrasonic wave element. The ultrasonic wave element has multiple resonance modes. The ultrasonic sensor changes a directivity of the ultrasonic sensor by selecting one of the multiple resonance modes of the ultrasonic wave element in accordance with a command signal output from the controller.

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Machine translation of JP06-70397.
Japanese Office Action dated Oct. 20, 2009, issued in corresponding Japanese Application No. 2007-177485, with English translation.
Chinese Office Action dated Oct. 28, 2010, issued in corresponding Chinese Application No. 200810125096.9, with English translation.

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