Noise mapping system with acoustical measurement blimp robot

Ryouzi Saitou, Yusuke Ikeda, Yasuhiro Oikawa

    Research output: Contribution to conferencePaper

    Abstract

    To measure environmental noise in our living space, a lot of noise measurement and mapping systems have been studied. However, it is costly because many measurement points are needed to make a noise map. There are problems such as a measurement area reachable by human hands is limited. In recent years, with advances in unmanned aerial vehicle (UAV) technology, various types of UAV have been developed. When UAV is used to acoustical measurement, it can automatically acquire information such as the environmental noise not only on the ground but also in the air. Multirotor aircraft is frequently used as UAV, however, it causes loud noise as it must always rotate propellers during flying. In this paper, a noise mapping system with acoustical measurement blimp robot is proposed. The proposed system which is silent type of multirotor for acquisition of environmental noise is constructed. The total length of the system is 1.4 m, and the weight is about 1.4 kg. The system has six propellers to move omnidirectionally, and a system control board with a field-programmable gate array (FPGA) which integrates CPU for controlling propeller rotations, sound recording, communicating with host PC, and obtaining the information of the system motion. The proposed system requires positional information to make a noise map. Thus, simultaneous localization and mapping (SLAM) technique are applied for the positional tracking by using image signal processing. To evaluate our system, a preliminary experiment in the large room was conducted to make a simple three-dimensional noise map. The results show that the propeller rotation noise level was reduced 47 dB as compared with a general multirotor, and it could make a three-dimensional indoor noise map by combining the sound information and the positional information.

    Original languageEnglish
    Publication statusPublished - 2017 Jan 1
    Event46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong, China
    Duration: 2017 Aug 272017 Aug 30

    Other

    Other46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017
    CountryChina
    CityHong Kong
    Period17/8/2717/8/30

    Keywords

    • Balloon
    • Environmental monitoring
    • Multirotor
    • Noise measurement
    • Propeller rotation noise

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

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  • Cite this

    Saitou, R., Ikeda, Y., & Oikawa, Y. (2017). Noise mapping system with acoustical measurement blimp robot. Paper presented at 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017, Hong Kong, China.