An experimental study on relative displacement sensing using phototransistor array for building structures

Kiyoshi Kanekawa, Iwao Matsuya, Maya Sato, Ryota Tomishi, Motoichi Takahashi, Satoru Miura, Yasutsugu Suzuki, Tomohiko Hatada, Ryuta Katamura, Yoshihiro Nitta, Takashi Tanii, Shuichi Shoji, Akira Nishitani, Iwao Ohdomari

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    We propose a novel sensor for directly measuring the relative displacement of a building structure. The sensor is composed of a laser light source and a phototransistor (PT) array. The PT array is immobilized on the floor together with a photo scattering plate made of glass, whereas the laser light source is separately immobilized on the ceiling. The photo scattering plate is placed in front of the PT array and distributes the laser beam on the multiple PTs. The relative displacement between the ceiling and the floor is estimated by the distribution of the PT output voltages, and the displacement is estimated with a resolution finer than the interval between the PTs. The accuracy of the relative displacement sensor (RDS) is experimentally assessed by conducting a shaking table test exhibiting several waves from harmonic sinusoidal waves to real seismic waves. We discuss the feasibility of real-time monitoring system utilizing this sensor.

    Original languageEnglish
    Pages (from-to)251-255
    Number of pages5
    JournalIEEJ Transactions on Electrical and Electronic Engineering
    Volume5
    Issue number2
    DOIs
    Publication statusPublished - 2010 Mar

    Fingerprint

    Phototransistors
    Sensors
    Ceilings
    Light sources
    Scattering
    Seismic waves
    Lasers
    Laser beams
    Glass
    Monitoring
    Electric potential

    Keywords

    • Building structure
    • Health monitoring
    • Inter-story displacement measurement
    • Laser
    • Photo scattering
    • Phototransistor
    • Position sensing

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    An experimental study on relative displacement sensing using phototransistor array for building structures. / Kanekawa, Kiyoshi; Matsuya, Iwao; Sato, Maya; Tomishi, Ryota; Takahashi, Motoichi; Miura, Satoru; Suzuki, Yasutsugu; Hatada, Tomohiko; Katamura, Ryuta; Nitta, Yoshihiro; Tanii, Takashi; Shoji, Shuichi; Nishitani, Akira; Ohdomari, Iwao.

    In: IEEJ Transactions on Electrical and Electronic Engineering, Vol. 5, No. 2, 03.2010, p. 251-255.

    Research output: Contribution to journalArticle

    Kanekawa, K, Matsuya, I, Sato, M, Tomishi, R, Takahashi, M, Miura, S, Suzuki, Y, Hatada, T, Katamura, R, Nitta, Y, Tanii, T, Shoji, S, Nishitani, A & Ohdomari, I 2010, 'An experimental study on relative displacement sensing using phototransistor array for building structures', IEEJ Transactions on Electrical and Electronic Engineering, vol. 5, no. 2, pp. 251-255. https://doi.org/10.1002/tee.20524
    Kanekawa, Kiyoshi ; Matsuya, Iwao ; Sato, Maya ; Tomishi, Ryota ; Takahashi, Motoichi ; Miura, Satoru ; Suzuki, Yasutsugu ; Hatada, Tomohiko ; Katamura, Ryuta ; Nitta, Yoshihiro ; Tanii, Takashi ; Shoji, Shuichi ; Nishitani, Akira ; Ohdomari, Iwao. / An experimental study on relative displacement sensing using phototransistor array for building structures. In: IEEJ Transactions on Electrical and Electronic Engineering. 2010 ; Vol. 5, No. 2. pp. 251-255.
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