可聴音の位相干渉を用いた0mから測定可能な距離測定法

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2012/11/01

タイトル(英語): Distance Measurement Method Measurable from 0m Using Phase Interference of Audible Sound

著者名: 中迫　昇（近畿大学 生物理工学部），篠原　寿広（近畿大学 生物理工学部），河西　慶治（近畿大学 生物理工学部），上保　徹志（近畿大学 生物理工学部／(株) ワイヤーデバイス）

著者名(英語): Noboru Nakasako (Faculty of Biology-Oriented Sc. & Tech., Kinki University), Toshihiro Shinohara (Faculty of Biology-Oriented Sc. & Tech., Kinki University), Keiji Kawanishi (Faculty of Biology-Oriented Sc. & Tech., Kinki University), Tetsuji Uebo (Faculty of Biology-Oriented Sc. & Tech., Kinki University/WIRE AUTOMATIC DEVICE Co., Ltd.)

キーワード: 距離測定，位相干渉，距離スペクトル，0m，位相スペクトル　　distance measurement，phase interference，range spectrum，0m，phase spectrum

要約(英語): In many engineering fields, distance to target is very important information. Typical distance measurement methods use time delay between transmitted and reflected waves, but it is difficult to estimate short distance. On the other hand, a method for measuring short distances using a standing wave, which is generated by phase interference of transmitted and reflected waves, is known in the field of microwave radar. This method is given in a very simple form such that the distance between microphone and target is estimated as a peak value of the range spectrum, which can be obtained by Fourier transform of the power spectrum of the observed wave. However, since the minimum measurable distance depends on the bandwidth of the transmitted wave, the shorter distance measurement requires the wider bandwidth of the transmitted wave. This paper describes a new distance estimation method measurable from 0m based on the phase interference of transmitted and reflected audible sound. More concretely, we introduce an analytic signal instead of the power spectrum and examine the validity and effectiveness of our method by applying it to an actual sound field.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.11 （2012） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1749-1755 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/132/11/132_1749/_article/-char/ja/