A multivariable detection device based on a capacitive microphone and its application to security

Kajiro Watanabe, Tsukasa Ishigaki, Tomoyuki Higuchi

研究成果: ジャーナルへの寄稿学術論文査読

6 被引用数 (Scopus)

抄録

Any sensor for detecting a certain physical variable is more or less influenced by other physical variables, which are designated as noise. The objective in conventional sensor design has been to minimize the noise. In this paper, however, we make use of sensing devices that are easily influenced by multiple physical variables and make full use of their multisensing characteristic. We consider such devices as multiple-inputsingle-output sensors. First, the output signal derived from multiple input signals must be dissociated. The input signals resulting from physical phenomena have inherent characteristics and can mathematically be modeled. Application of a Kalman filter realized by such models can provide estimates of the state variables of all input models, and thus, the input signals are dissociated. As an example, a novel sensor based on a microphone is presented. This sensor can detect various variables such as pressure and acceleration in the frequency range of 0.1 Hz to 10 kHz, temperature, and even light emission. We apply the sensor to monitor the symptoms of fire, earthquake, and break-in by an intruder from within a house.

本文言語英語
論文番号5280362
ページ(範囲)1955-1963
ページ数9
ジャーナルIEEE Transactions on Instrumentation and Measurement
59
7
DOI
出版ステータス出版済み - 2010 7月

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