車両存在報知装置 - 株式会社デンソー

Title:

車両存在報知装置

Document Type and Number:

Japanese Patent JP4752963

Kind Code:

B2

Abstract:

A vehicle presence alert apparatus for alerting a target object to a presence of the vehicle via an alert sound with a frequency in an audible range is disclosed. The vehicle presence alert apparatus includes: a sound emitter configured to (i) cause a carrier wave with a frequency in an ultrasonic range to carry the alert sound, and (ii) emit the carrier wave carrying the alert sound as a radiation wave toward the target object; a sound receiver configured to receive a reflected wave, the reflected wave being generated due to reflection of the radiation wave by the target object; and relative velocity calculation means for calculating a relative velocity of the target object with respect to the vehicle based on a frequency of the radiation wave and a frequency of the reflected wave.

Inventors:

Toshio Hayashi
Toshiaki Nakayama

Application Number:

JP2009182101A

Publication Date:

August 17, 2011

Filing Date:

August 05, 2009

Export Citation:

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